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BVG Technical Description 
OIL-INJECTED ROTARY SCREW GAS COMPRESSORS AND TREATMENT 
SYSTEMS FOR BIOGAS, LANDFILL GAS AND WET-GAS IN GENERAL 
Capacity up to 3000Nm3/h 
Available discharge pressures from 3.5bar(g) to 25bar(g) 
Nominal power from 4.0 to 400kW 
By working in partnership with Adicomp to secure your future
2 l Adicomp S.r.l. 
Adicomp’s experience, 
gas compression and treatment. 
Adicomp during the last 15 years has gained a lot of experience in compression and treat-ment 
of Biogas, Landfill gas, Natural gas, Nitrogen, Argon, Hydrogen and Syngas also sup-plying 
several hundred installations everywhere around the word. 
The BVG compression stations with direct coupling constitute the industrial compressor ex-cellence 
thanks to the efficiency of the power transmission system by means of a mechani-cal 
elastomer joint which limits vibrations to a minimum. 
These gas compression and treatment stations are innovative solutions because of their 
compact dimensions, noiselessness and suitability for uses in the most varied industrial sec-tors 
working in temperatures range between –20°C and 40°C (for lower or higher tempera-tures 
alternative solutions are available) 
In extreme environmental contexts the WEATHER PROOF solution (which envisages a cata-phoresis 
treatment of the metal structural work, the use of automatic ‘’louvres” for closing 
the radiant parts for managing the temperature inside the station as well as the use of 
stainless steel) makes possible for these units to be installed in extreme climatic situations. 
BVG gas compression and treatment stations are also suitable for installation in environ-ments 
that are classified in accordance with ATEX95 classifications zones 1&2 or in accord-ance 
with EN1127-1:2011 ANNEX B for not classified zones. 
WE ARE LEADER IN COMPRESSION AND TREATMENT SOLUTIONS 
Thanks to its own peculiar type of oil injected rotary screw gas compressor and to the well 
proven technology for the removal of gas contaminants like water, dust and siloxanes, 
Adicomp is proud to affirm that we are leader in Europe for supplying a “TURNKEY” installa-tions 
for gas compression and treatment in cogeneration plants. 
Adicomp systems can compress gases at the required pressure and treat them to the right 
quality for feeding turbines and gas engines, cogenerating heat and power. 
Adicomp technology can obtain the right quality of compressed gas even if the presence 
of hydrogen sulfide (H2S) is up to 1000mg/m3 as standard, while in case of higher concen-trations, 
alternative solutions are available.
BVG series, 
biogas and landfill gas applications. 
COMMON FEATURES 
 Completely automatic by an electronic control system. 
 Direct coupled. 
 VSD (Variable Speed Drive) by inverter technology. 
 Suitable for ATEX Zone 1&2 or no-classified zones. 
 Air cooled standard, water cooled system is also available as option. 
 For various optional see by page 6. 
Biogas and landfill gas compression and treatment stations designed into an easy handling 
skid composed of an oil-injected rotary screw gas compressor, directly coupled to an elec-tric 
motor through a flexible coupling, inverter controlled and complete with the following 
systems: 
 At the suction: gas tight filter with water separator and automatic condensate drainer 
equipped with safety level switch. 
 At the discharge: air-cooled after-cooler with water separator and automatic conden-sate 
drainer equipped with safety level switch and a final gas/gas heat exchanger. 
The wet gas is aspired through a suction filter acting also as a water separator with auto-matic 
condensate discharge system, then the gas passes through a suction control valve. 
All components in contact with the gas are made in stainless steel or duly protected, due 
to the presence of CO2 and other aggressive contaminants into the gas. 
During the gas compression process, oil is injected inside the rotary screw chamber to per-form 
three main functions: lubrication, sealing and heat absorption. Working in a closed cir-cuit 
from a gas/oil receiver, oil is pressurized to flow through an oil cooler, then filtered be-fore 
being injected again into the screw compression chamber. The gas goes instead 
through the minimum pressure/no-return valve into an air-cooled after cooler and finally 
through a gas/gas exchanger before to leave the package. 
When the (IW) suction gas/water heat exchanger & (OW) discharge gas/water heat ex-changer 
options (see by page 6) are required to remove the humidity from the wet-gas be-fore 
and after the compression, a suitable 
chiller is needed to produce the right 
quantity of refrigerated water (3-5°C) to 
treat the gas (normally the chiller is 
placed into a safe zone). 
Normally a mechanical by-pass valve is 
used to recirculate the gas in excess into 
suction to reduce the capacity from the 
value achieved at minimum speed of the 
electric motor, down to 0%. Sometimes it’s 
necessary to install a pneumatic con-trolled 
by-pass valve to have a more ac-curate 
control (in this case a supply of 
compressed air is necessary). 
When the system stops the gas is depres-surized 
by blowing it back into the digest-er 
or bleeding it out in the atmosphere. 
www.adicomp.com l 3
principal characteristics 
COMPRESSOR ELEMENT AND TRANSMISSION 
The lubricated single-stage oil-injected rotary screw compressor is composed of two rotors: 
a 5-lobe male and a 6-slot female one with asymmetrical profiles. Rotation of the rotors pro-duces 
compression of the gas with continuity and without pulsations. The compressor ele-ment 
is driven directly by an electric motor through a flexible elastomer joint. The direct 
transmission represents an important characteristic of Adicomp machines as it makes possi-ble 
to drive the compressor element with the best results and maximum reliability. 
The compression is developed in a single stage and the heat of the compression is re-moved 
by the oil injected between the rotors. Furthermore the oil lubricates the rotating 
mechanical parts and ensures the seal between the rotors. 
GAS CIRCUIT 
The gas circuit is composed as follows: 
• Gas tight suction filter complete with automatic drainer and safety device; 
• Stainless steel gas/oil receiver with oil separators; 
• Minimum pressure/no-return valve; 
• Gas cooler with large exchange surface cooled by separate fans 
• Water separators with automatic condensate drainer and safety device; 
• Gas/gas heat exchanger. 
OIL CIRCUIT 
The oil is kept in circulation exclusively by the differential pressure of the gas between the 
gas/oil receiver and the compressor element at suction. The circuit is composed as follows: 
• Stainless steel gas/oil receiver with high efficiency oil separator cartridge; 
• High efficiency type oil filters; 
• Thermostatic valve to maintain the right operating temperature; 
• Oil cooler with large exchange surface cooled by separate fans; 
GAS/OIL COOLING CIRCUIT 
The cooling circuit is composed of the oil cooler and by the final compressed gas cooler 
combined into a single radiator air-cooled by separate axial electric motor fans. Water-cooled 
oil cooler and final water-cooled gas cooler are also available as option. 
MAIN ELECTRIC MOTOR 
The electric motor used is from IE1 to IE3 efficiency with F class of insulation and shielded 
bearings, over a certain size to withstand to class B over temperatures and with a degree of 
protection IP55. We usually install (Ex nA) motors for ATEX zone 2 and (Ex de) motors for ATEX 
zone 1. Standard electric motors are used for no-classified zones. 
SAFETY DEVICES AND GAUGES: 
• Suction pressure gauge. 
• EMC filter inverter on-board protection . 
• Pressure/Vacuum switch at suction. 
• Oil pressure gauge. 
• Temperature sensors at the compressor’s 
• Temperature gauge on the final dis-charge 
gas/oil mixture discharge. 
pipe. 
• Pressure switch on oil receiver for high 
• High water level switch on suction filter 
pressure. 
separator. 
• Stainless steel conveyed safety valve on 
• High water level switch on discharge sep-arator. 
the oil receiver. 
4 l Adicomp S.r.l.
CAPACITY AND PRESSURE REGULATION 
Adicomp BVG compression stations are based on reliable and proven frequency converter 
(Inverter technology) to control the capacity precisely in accordance to the gas demand. 
This means that the rotation speed of the compressor block is matched exactly to the re-quirement 
and the result is the constant pressure on the network all time. This feature mini-mize 
the power consumption and reduces the wear and tear on the compressor also. 
With a speed range of the compressor block from 100% down to 50%, the BVG gas com-pression 
stations feature the market widest turn-down range and quickest adaptation to 
the gas demand changes. Within a very narrow limit of 0.7bar(g) the following capacity 
regulations are obtained: 
• By the variable speed of the main electric motor controlled by the inverter from 100% 
down to about 50% of the speed range; 
• By passing the gas into suction with a mechanic or pneumatic special by-pass valve 
from about 50% down to 0% of the nominal capacity; 
• When the system stops the gas is depressurized by blowing it back into the digester or 
bleeding it out into the atmosphere. 
ELECTRIC & ELECTRONIC CONTROL PANEL 
All various CE&UL switches and protection devices are fitted into a special control panel 
that is supplied separately by the compressor station. 
The S1-20 electronic control system is also fitted into the panel and it is capable of pro-cessing 
the requested pressure, temperature and signals in real time as well as the function-al 
parameters by means of transducers inside the station and in combination with the in-verter. 
Regulation of the off-load/loaded operation with timed automatic stopping for greater op-erating 
economy. A correct program of the operations guarantees the constant gas flow 
requested without any pressure jumps. 
The electronic system makes possible to: 
• Control the operating conditions of the main components of the compression station; 
• Change the programmed working conditions; 
• Determine any maintenance work in an automatic manner, as regards the environmen-tal 
and operating conditions of the station, thereby rendering service more secure and 
less onerous; 
By a luminous monitor of the electronic panel S1-20 and the Inverter Keypad on the control 
board panel, it’s possible to display the working conditions of the machine and the trigger-ing 
of any of the alarm and blocking devices provided, more specifically: 
 Display indicating the working pressure. 
 Display indicating the working tempera-ture 
 Symbol LEDs. 
 Failure and status messages. 
 Maintenance messages. 
 Main and auxiliary switches. 
 Start button. 
 Programmed stop button. 
 Emergency stop button. 
 IP55 enclosure with ventilating fan and 
heaters 
 Operating motor frequency 
 Current absorbed 
 Power absorbed 
 Motor speed. 
 Operating frequency. 
 Many more functions selecting the pa-rameters 
requested. 
 Inlet water temperature (chiller display). 
 Outlet water temperature (chiller dis-play). 
 Many more functions selecting the pa-rameters 
requested. 
www.adicomp.com l 5
6 l Adicomp S.r.l. 
options available 
(OF) - OPEN FRAME (STANDARD VERSION) 
Open frame version suitable for indoor installation. 
(S) - SILENCED & (SS) SUPER SILENCED 
Sound proof enclosure, suitable for indoor installation (no weather proof) with a noise level 
from 70dB to 80dB at 1m. With the super silenced option we also install soundproofing air 
conveyors and increased sound absorbing materials. 
(WP) - WEATHER PROOF 
The compressor station is designed and built for an ambient temperature from -20°C to 40° 
C. Electric oil heaters thermostatically controlled keep the internal temperature above 5°C 
in presence of cold climate and work in combination with pneumatic actuators that are 
used to open and close the inlet/outlet cooling air flow system of the canopy when the 
compressor stops. 
While the compressor is working the temperature inside the canopy is kept above 0°C by 
recycling warm air flowing through the oil cooler. 
(CF) - FINE FILTRATION 
When the quality of the standard compressed gas is not acceptable with the residual con-tent 
of oil (3-5mg/m3), before leaving the package the compressed gas goes through a 
set of high efficiency coalescent type filters which are fitted down-stream the after-cooler 
to reduce the residual amount of oil content into the gas down to (0,01mg/m3). 
(CH) - WATER CHILLER 
Adicomp proposes chillers which has been designed specifically for industry. 
Result of over 20 years in the industrial chilling market, with hundreds of thousands of refrig-erating 
machines installed worldwide, they perfectly match the needs of a wide range of 
industries. 
This thanks to: 
 Generous operating limits, both as regards the water inlet and outlet temperature. 
 A robust construction with high ambient temperature limits, allowing operation in all con-ditions 
worldwide. 
 An extensive range of accessories which allows them to be personalized to all individual 
applications. 
 A fully packaged and easy to use solution, with integrated pump and tank, perfectly 
suited to the needs of the industrial User. 
Lowest operating costs thanks especially to energy efficient scroll compressors, the over-sized 
evaporator and the unique evaporator-in-tank configuration, these chillers achieve 
leading energy efficiency levels. 
(IW) - SUCTION GAS/WATER HEAT EXCHANGER 
When the presence of the water (humidity) into the biogas is high and the presence of H2S 
is above 1000mg/m3, it’s recommended to install at suction a gas/refrigerated-water heat 
exchanger capable to bring the gas temperature down to about 5°C. 
Removing in this way both the most of water content into the gas by water separator with 
automatic drain and slightly at the same time the H2S’ presence due to its property of solu-bility 
in water.
(OW) - DISCHARGE GAS/WATER HEAT EXCHANGER 
At outlet side this option consists in a further cooling of the gas, downstream of the after-cooler, 
by a stainless steel compressed gas/refrigerated water heat exchanger, a water 
separator and an automatic drainer. This option brings the compressed gas dew-point tem-perature 
in pressure down to about 5°C such eliminating most of the water content and 
allowing the coalescent filter to work at the best. 
(HR) - HEAT RECOVERING 
Almost all the heat generated by a rotary screw compressor can be recovered and used 
to reduce energy general costs. Saving Energy means automatically reducing CO2 emis-sions, 
which is not only beneficial for the environment but also for the health. 
Our unit can be equipped with a heat recovering system to achieve the maximum Energy 
saving benefit from the compressor. It consists in a water/oil heat exchanger capable to 
transfer the heat from the compressor oil to sanitary, central heating or industrial process 
water. 
It is thermostatically controlled both at the oil as well as at the water side. Up to 80% of the 
compressor’s heat energy can be recovered by this system. 
(SR) - SILOXANE REMOVAL SYSTEM 
Siloxanes are very dangerous for turbines and cause big maintenance problems to gas en-gines. 
If the content of them into the biogas or better into the landfill gas is high, it must 
practically be removed down to 0 before feeding the power co-generators. 
Adicomp uses to install twin stainless steel column that contain active carbons suitable for 
removing siloxanes (SiO), both complete with pressure gauges and conveyed type gas 
safety valves. 
Four valves are also present to switch manually the duty of the columns and for the depres-surization 
of the system. A progressive dust filter with a filtration grade of 1μm is normally 
supplied and installed external the package to block the dust of the carbons. 
(MB) MODBUS & (PB) PROFIBUS REMOTE CONTROL SYSTEMS 
Every Adicomp compressor can be connected through a Modbus or a Profibus gateway 
for data transmission. Modbus and Profibus added to the S1-20 main controller, can per-form 
the following operations: 
 Read any parameter inside the table from P01 to P10. 
 Write on any settable parameter inside the table from P01 to P10. Usually it is used to 
modify the working pressure PU and PL. 
 There are 3 working inputs (start – stop – reset). 
 “Get”: Get the value or the information. 
 “Set”: Set the value of a function. 
 “Cmd”: Give the command. 
As option an I/O Box provides additional general purpose I/O (input/output) connections, 
in particular n°8 digital and n°4 analog inputs. 
These connections can be used to monitor sensor devices and better manage the alarms. 
A single alarm for each channel allows an improved fault remote monitoring. 
Four analog devices like PT100 or pressure transducers can be added and “read” via Mod-bus 
or Profibus systems. 
www.adicomp.com l 7
8 l Adicomp S.r.l. 
Customized solutions, 
some references. 
BVG250-17ND-INV (OW,WP,CF) 
Developed to feed two Solar 
(Caterpillar) turbines. 
Designed for classified ATEX zone 2, 
sound proof and weather proof 
equipped with dust, water and oil 
removal system. 
SPECIFICATIONS: 
Power: 315kW (de-rated) 
Inlet pressure: 50mbar(g) 
Outlet pressure: 17bar(g) 
Ambient temperature: -20°/40°C 
Capacity: 0<600<1200Nm3/h 
BVG160-6.0ND-INV (OF-OW-CF) 
Compressor for wet gas suitable 
for indoor installation and ATEX 
zone 2 classified area to supply 
Capstone turbines. Open frame 
version equipped with dust re-moval 
system. 
SPECIFICATIONS: 
Power: 200kW (de-rated) 
Inlet pressure: 25-100mbar(g) 
Outlet pressure: 5.5bar(g) 
Ambient temperature: 3°/40°C 
Capacity: 0<662<1535Nm3/h 
BVG30-6.0HD-INV (OW,WP) 
Wet gas compressor installed into 
ATEX zone2 classified area to sup-ply 
turbines. 
Sound proof and weather proof 
equipped with heat exchanger. 
SPECIFICATIONS: 
Power: 37kW (de-rated) 
Inlet pressure: 20-100mbar(g) 
Outlet pressure: 6.0bar(g) 
Ambient temperature: -20°/40°C 
Capacity: 0<177<241Nm3/h
Adicomp’s overview, 
other products available. 
ELECTRIC DRIVEN OIL-INJECTED ROTARY SCREW BOOSTER 
For natural gas, bio-methane and well-head gas with suction pressure up to 8bar(g) and 
discharge pressure up to 25bar(g). Full range of power up to 400kW. They are also available 
in containerized versions for extreme climate conditions. 
GAS-ENGINE DRIVEN OIL-INJECTED ROTARY SCREW BOOSTER 
For natural gas and well-head gas with suction pressure up to 8bar(g) and discharge pres-sure 
up to 25bar(g). Full range of power up to 400kW. These versions are also available in 
containerized versions for extreme climate conditions. 
www.adicomp.com l 9
10 
10 l Adicomp S.r.l. 
Adicomp’s overview, 
other products available. 
TWO-STAGE OIL-INJECTED ROTARY SCREW COMPRESSOR 
Electric motor driven compressors for gas and air applications with suction pressure from 
atmospheric up to 1bar(g) and discharge pressure up to 40bar(g). Full range of power up 
to 400kW. 
FULL RANGE OF MULTISTAGE RECIPROCATING PISTON COMPRESSORS 
Electric motor driven compressors for several different kind of gas applications like nitrogen, 
natural gas, bio-methane process gas etc., available in container or open frame versions 
with a discharge pressure up to 350bar(g). Full range of power up to 400kW. 
FULL RANGE OF DRYING AND BOOSTING PACKAGES 
For biogas treatment, drying and boosting systems that are suitable to be installed outdoor 
and with a capacity up to 2000m3/h and a pressure up to 200mbar(g).
www.adicomp.com l 11 
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Download a QR Reader 
and scan the code to read 
this catalog on your tablet. 
Adicomp s.r.l. 
via del Progresso, 35 - 36050 Sovizzo (Vicenza) Italy 
Ph. +39 0444 573979 - Fax +39 0444 809186 
info@adicomp.com - www.adicomp.com 
Copyright © 2014 Adicomp s.r.l. – All rights reserved 
Datas are indicative and may be changed in any time without notice. 
Rev. December 2014

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Technical description bvg 2014 (en) light

  • 1. BVG Technical Description OIL-INJECTED ROTARY SCREW GAS COMPRESSORS AND TREATMENT SYSTEMS FOR BIOGAS, LANDFILL GAS AND WET-GAS IN GENERAL Capacity up to 3000Nm3/h Available discharge pressures from 3.5bar(g) to 25bar(g) Nominal power from 4.0 to 400kW By working in partnership with Adicomp to secure your future
  • 2. 2 l Adicomp S.r.l. Adicomp’s experience, gas compression and treatment. Adicomp during the last 15 years has gained a lot of experience in compression and treat-ment of Biogas, Landfill gas, Natural gas, Nitrogen, Argon, Hydrogen and Syngas also sup-plying several hundred installations everywhere around the word. The BVG compression stations with direct coupling constitute the industrial compressor ex-cellence thanks to the efficiency of the power transmission system by means of a mechani-cal elastomer joint which limits vibrations to a minimum. These gas compression and treatment stations are innovative solutions because of their compact dimensions, noiselessness and suitability for uses in the most varied industrial sec-tors working in temperatures range between –20°C and 40°C (for lower or higher tempera-tures alternative solutions are available) In extreme environmental contexts the WEATHER PROOF solution (which envisages a cata-phoresis treatment of the metal structural work, the use of automatic ‘’louvres” for closing the radiant parts for managing the temperature inside the station as well as the use of stainless steel) makes possible for these units to be installed in extreme climatic situations. BVG gas compression and treatment stations are also suitable for installation in environ-ments that are classified in accordance with ATEX95 classifications zones 1&2 or in accord-ance with EN1127-1:2011 ANNEX B for not classified zones. WE ARE LEADER IN COMPRESSION AND TREATMENT SOLUTIONS Thanks to its own peculiar type of oil injected rotary screw gas compressor and to the well proven technology for the removal of gas contaminants like water, dust and siloxanes, Adicomp is proud to affirm that we are leader in Europe for supplying a “TURNKEY” installa-tions for gas compression and treatment in cogeneration plants. Adicomp systems can compress gases at the required pressure and treat them to the right quality for feeding turbines and gas engines, cogenerating heat and power. Adicomp technology can obtain the right quality of compressed gas even if the presence of hydrogen sulfide (H2S) is up to 1000mg/m3 as standard, while in case of higher concen-trations, alternative solutions are available.
  • 3. BVG series, biogas and landfill gas applications. COMMON FEATURES  Completely automatic by an electronic control system.  Direct coupled.  VSD (Variable Speed Drive) by inverter technology.  Suitable for ATEX Zone 1&2 or no-classified zones.  Air cooled standard, water cooled system is also available as option.  For various optional see by page 6. Biogas and landfill gas compression and treatment stations designed into an easy handling skid composed of an oil-injected rotary screw gas compressor, directly coupled to an elec-tric motor through a flexible coupling, inverter controlled and complete with the following systems:  At the suction: gas tight filter with water separator and automatic condensate drainer equipped with safety level switch.  At the discharge: air-cooled after-cooler with water separator and automatic conden-sate drainer equipped with safety level switch and a final gas/gas heat exchanger. The wet gas is aspired through a suction filter acting also as a water separator with auto-matic condensate discharge system, then the gas passes through a suction control valve. All components in contact with the gas are made in stainless steel or duly protected, due to the presence of CO2 and other aggressive contaminants into the gas. During the gas compression process, oil is injected inside the rotary screw chamber to per-form three main functions: lubrication, sealing and heat absorption. Working in a closed cir-cuit from a gas/oil receiver, oil is pressurized to flow through an oil cooler, then filtered be-fore being injected again into the screw compression chamber. The gas goes instead through the minimum pressure/no-return valve into an air-cooled after cooler and finally through a gas/gas exchanger before to leave the package. When the (IW) suction gas/water heat exchanger & (OW) discharge gas/water heat ex-changer options (see by page 6) are required to remove the humidity from the wet-gas be-fore and after the compression, a suitable chiller is needed to produce the right quantity of refrigerated water (3-5°C) to treat the gas (normally the chiller is placed into a safe zone). Normally a mechanical by-pass valve is used to recirculate the gas in excess into suction to reduce the capacity from the value achieved at minimum speed of the electric motor, down to 0%. Sometimes it’s necessary to install a pneumatic con-trolled by-pass valve to have a more ac-curate control (in this case a supply of compressed air is necessary). When the system stops the gas is depres-surized by blowing it back into the digest-er or bleeding it out in the atmosphere. www.adicomp.com l 3
  • 4. principal characteristics COMPRESSOR ELEMENT AND TRANSMISSION The lubricated single-stage oil-injected rotary screw compressor is composed of two rotors: a 5-lobe male and a 6-slot female one with asymmetrical profiles. Rotation of the rotors pro-duces compression of the gas with continuity and without pulsations. The compressor ele-ment is driven directly by an electric motor through a flexible elastomer joint. The direct transmission represents an important characteristic of Adicomp machines as it makes possi-ble to drive the compressor element with the best results and maximum reliability. The compression is developed in a single stage and the heat of the compression is re-moved by the oil injected between the rotors. Furthermore the oil lubricates the rotating mechanical parts and ensures the seal between the rotors. GAS CIRCUIT The gas circuit is composed as follows: • Gas tight suction filter complete with automatic drainer and safety device; • Stainless steel gas/oil receiver with oil separators; • Minimum pressure/no-return valve; • Gas cooler with large exchange surface cooled by separate fans • Water separators with automatic condensate drainer and safety device; • Gas/gas heat exchanger. OIL CIRCUIT The oil is kept in circulation exclusively by the differential pressure of the gas between the gas/oil receiver and the compressor element at suction. The circuit is composed as follows: • Stainless steel gas/oil receiver with high efficiency oil separator cartridge; • High efficiency type oil filters; • Thermostatic valve to maintain the right operating temperature; • Oil cooler with large exchange surface cooled by separate fans; GAS/OIL COOLING CIRCUIT The cooling circuit is composed of the oil cooler and by the final compressed gas cooler combined into a single radiator air-cooled by separate axial electric motor fans. Water-cooled oil cooler and final water-cooled gas cooler are also available as option. MAIN ELECTRIC MOTOR The electric motor used is from IE1 to IE3 efficiency with F class of insulation and shielded bearings, over a certain size to withstand to class B over temperatures and with a degree of protection IP55. We usually install (Ex nA) motors for ATEX zone 2 and (Ex de) motors for ATEX zone 1. Standard electric motors are used for no-classified zones. SAFETY DEVICES AND GAUGES: • Suction pressure gauge. • EMC filter inverter on-board protection . • Pressure/Vacuum switch at suction. • Oil pressure gauge. • Temperature sensors at the compressor’s • Temperature gauge on the final dis-charge gas/oil mixture discharge. pipe. • Pressure switch on oil receiver for high • High water level switch on suction filter pressure. separator. • Stainless steel conveyed safety valve on • High water level switch on discharge sep-arator. the oil receiver. 4 l Adicomp S.r.l.
  • 5. CAPACITY AND PRESSURE REGULATION Adicomp BVG compression stations are based on reliable and proven frequency converter (Inverter technology) to control the capacity precisely in accordance to the gas demand. This means that the rotation speed of the compressor block is matched exactly to the re-quirement and the result is the constant pressure on the network all time. This feature mini-mize the power consumption and reduces the wear and tear on the compressor also. With a speed range of the compressor block from 100% down to 50%, the BVG gas com-pression stations feature the market widest turn-down range and quickest adaptation to the gas demand changes. Within a very narrow limit of 0.7bar(g) the following capacity regulations are obtained: • By the variable speed of the main electric motor controlled by the inverter from 100% down to about 50% of the speed range; • By passing the gas into suction with a mechanic or pneumatic special by-pass valve from about 50% down to 0% of the nominal capacity; • When the system stops the gas is depressurized by blowing it back into the digester or bleeding it out into the atmosphere. ELECTRIC & ELECTRONIC CONTROL PANEL All various CE&UL switches and protection devices are fitted into a special control panel that is supplied separately by the compressor station. The S1-20 electronic control system is also fitted into the panel and it is capable of pro-cessing the requested pressure, temperature and signals in real time as well as the function-al parameters by means of transducers inside the station and in combination with the in-verter. Regulation of the off-load/loaded operation with timed automatic stopping for greater op-erating economy. A correct program of the operations guarantees the constant gas flow requested without any pressure jumps. The electronic system makes possible to: • Control the operating conditions of the main components of the compression station; • Change the programmed working conditions; • Determine any maintenance work in an automatic manner, as regards the environmen-tal and operating conditions of the station, thereby rendering service more secure and less onerous; By a luminous monitor of the electronic panel S1-20 and the Inverter Keypad on the control board panel, it’s possible to display the working conditions of the machine and the trigger-ing of any of the alarm and blocking devices provided, more specifically:  Display indicating the working pressure.  Display indicating the working tempera-ture  Symbol LEDs.  Failure and status messages.  Maintenance messages.  Main and auxiliary switches.  Start button.  Programmed stop button.  Emergency stop button.  IP55 enclosure with ventilating fan and heaters  Operating motor frequency  Current absorbed  Power absorbed  Motor speed.  Operating frequency.  Many more functions selecting the pa-rameters requested.  Inlet water temperature (chiller display).  Outlet water temperature (chiller dis-play).  Many more functions selecting the pa-rameters requested. www.adicomp.com l 5
  • 6. 6 l Adicomp S.r.l. options available (OF) - OPEN FRAME (STANDARD VERSION) Open frame version suitable for indoor installation. (S) - SILENCED & (SS) SUPER SILENCED Sound proof enclosure, suitable for indoor installation (no weather proof) with a noise level from 70dB to 80dB at 1m. With the super silenced option we also install soundproofing air conveyors and increased sound absorbing materials. (WP) - WEATHER PROOF The compressor station is designed and built for an ambient temperature from -20°C to 40° C. Electric oil heaters thermostatically controlled keep the internal temperature above 5°C in presence of cold climate and work in combination with pneumatic actuators that are used to open and close the inlet/outlet cooling air flow system of the canopy when the compressor stops. While the compressor is working the temperature inside the canopy is kept above 0°C by recycling warm air flowing through the oil cooler. (CF) - FINE FILTRATION When the quality of the standard compressed gas is not acceptable with the residual con-tent of oil (3-5mg/m3), before leaving the package the compressed gas goes through a set of high efficiency coalescent type filters which are fitted down-stream the after-cooler to reduce the residual amount of oil content into the gas down to (0,01mg/m3). (CH) - WATER CHILLER Adicomp proposes chillers which has been designed specifically for industry. Result of over 20 years in the industrial chilling market, with hundreds of thousands of refrig-erating machines installed worldwide, they perfectly match the needs of a wide range of industries. This thanks to:  Generous operating limits, both as regards the water inlet and outlet temperature.  A robust construction with high ambient temperature limits, allowing operation in all con-ditions worldwide.  An extensive range of accessories which allows them to be personalized to all individual applications.  A fully packaged and easy to use solution, with integrated pump and tank, perfectly suited to the needs of the industrial User. Lowest operating costs thanks especially to energy efficient scroll compressors, the over-sized evaporator and the unique evaporator-in-tank configuration, these chillers achieve leading energy efficiency levels. (IW) - SUCTION GAS/WATER HEAT EXCHANGER When the presence of the water (humidity) into the biogas is high and the presence of H2S is above 1000mg/m3, it’s recommended to install at suction a gas/refrigerated-water heat exchanger capable to bring the gas temperature down to about 5°C. Removing in this way both the most of water content into the gas by water separator with automatic drain and slightly at the same time the H2S’ presence due to its property of solu-bility in water.
  • 7. (OW) - DISCHARGE GAS/WATER HEAT EXCHANGER At outlet side this option consists in a further cooling of the gas, downstream of the after-cooler, by a stainless steel compressed gas/refrigerated water heat exchanger, a water separator and an automatic drainer. This option brings the compressed gas dew-point tem-perature in pressure down to about 5°C such eliminating most of the water content and allowing the coalescent filter to work at the best. (HR) - HEAT RECOVERING Almost all the heat generated by a rotary screw compressor can be recovered and used to reduce energy general costs. Saving Energy means automatically reducing CO2 emis-sions, which is not only beneficial for the environment but also for the health. Our unit can be equipped with a heat recovering system to achieve the maximum Energy saving benefit from the compressor. It consists in a water/oil heat exchanger capable to transfer the heat from the compressor oil to sanitary, central heating or industrial process water. It is thermostatically controlled both at the oil as well as at the water side. Up to 80% of the compressor’s heat energy can be recovered by this system. (SR) - SILOXANE REMOVAL SYSTEM Siloxanes are very dangerous for turbines and cause big maintenance problems to gas en-gines. If the content of them into the biogas or better into the landfill gas is high, it must practically be removed down to 0 before feeding the power co-generators. Adicomp uses to install twin stainless steel column that contain active carbons suitable for removing siloxanes (SiO), both complete with pressure gauges and conveyed type gas safety valves. Four valves are also present to switch manually the duty of the columns and for the depres-surization of the system. A progressive dust filter with a filtration grade of 1μm is normally supplied and installed external the package to block the dust of the carbons. (MB) MODBUS & (PB) PROFIBUS REMOTE CONTROL SYSTEMS Every Adicomp compressor can be connected through a Modbus or a Profibus gateway for data transmission. Modbus and Profibus added to the S1-20 main controller, can per-form the following operations:  Read any parameter inside the table from P01 to P10.  Write on any settable parameter inside the table from P01 to P10. Usually it is used to modify the working pressure PU and PL.  There are 3 working inputs (start – stop – reset).  “Get”: Get the value or the information.  “Set”: Set the value of a function.  “Cmd”: Give the command. As option an I/O Box provides additional general purpose I/O (input/output) connections, in particular n°8 digital and n°4 analog inputs. These connections can be used to monitor sensor devices and better manage the alarms. A single alarm for each channel allows an improved fault remote monitoring. Four analog devices like PT100 or pressure transducers can be added and “read” via Mod-bus or Profibus systems. www.adicomp.com l 7
  • 8. 8 l Adicomp S.r.l. Customized solutions, some references. BVG250-17ND-INV (OW,WP,CF) Developed to feed two Solar (Caterpillar) turbines. Designed for classified ATEX zone 2, sound proof and weather proof equipped with dust, water and oil removal system. SPECIFICATIONS: Power: 315kW (de-rated) Inlet pressure: 50mbar(g) Outlet pressure: 17bar(g) Ambient temperature: -20°/40°C Capacity: 0<600<1200Nm3/h BVG160-6.0ND-INV (OF-OW-CF) Compressor for wet gas suitable for indoor installation and ATEX zone 2 classified area to supply Capstone turbines. Open frame version equipped with dust re-moval system. SPECIFICATIONS: Power: 200kW (de-rated) Inlet pressure: 25-100mbar(g) Outlet pressure: 5.5bar(g) Ambient temperature: 3°/40°C Capacity: 0<662<1535Nm3/h BVG30-6.0HD-INV (OW,WP) Wet gas compressor installed into ATEX zone2 classified area to sup-ply turbines. Sound proof and weather proof equipped with heat exchanger. SPECIFICATIONS: Power: 37kW (de-rated) Inlet pressure: 20-100mbar(g) Outlet pressure: 6.0bar(g) Ambient temperature: -20°/40°C Capacity: 0<177<241Nm3/h
  • 9. Adicomp’s overview, other products available. ELECTRIC DRIVEN OIL-INJECTED ROTARY SCREW BOOSTER For natural gas, bio-methane and well-head gas with suction pressure up to 8bar(g) and discharge pressure up to 25bar(g). Full range of power up to 400kW. They are also available in containerized versions for extreme climate conditions. GAS-ENGINE DRIVEN OIL-INJECTED ROTARY SCREW BOOSTER For natural gas and well-head gas with suction pressure up to 8bar(g) and discharge pres-sure up to 25bar(g). Full range of power up to 400kW. These versions are also available in containerized versions for extreme climate conditions. www.adicomp.com l 9
  • 10. 10 10 l Adicomp S.r.l. Adicomp’s overview, other products available. TWO-STAGE OIL-INJECTED ROTARY SCREW COMPRESSOR Electric motor driven compressors for gas and air applications with suction pressure from atmospheric up to 1bar(g) and discharge pressure up to 40bar(g). Full range of power up to 400kW. FULL RANGE OF MULTISTAGE RECIPROCATING PISTON COMPRESSORS Electric motor driven compressors for several different kind of gas applications like nitrogen, natural gas, bio-methane process gas etc., available in container or open frame versions with a discharge pressure up to 350bar(g). Full range of power up to 400kW. FULL RANGE OF DRYING AND BOOSTING PACKAGES For biogas treatment, drying and boosting systems that are suitable to be installed outdoor and with a capacity up to 2000m3/h and a pressure up to 200mbar(g).
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  • 12. Download a QR Reader and scan the code to read this catalog on your tablet. Adicomp s.r.l. via del Progresso, 35 - 36050 Sovizzo (Vicenza) Italy Ph. +39 0444 573979 - Fax +39 0444 809186 info@adicomp.com - www.adicomp.com Copyright © 2014 Adicomp s.r.l. – All rights reserved Datas are indicative and may be changed in any time without notice. Rev. December 2014