The document discusses a project to upgrade the ESPs at CPP-VAL to hybrid ESP-fabric filter systems in order to reduce emissions below 50 mg/Nm3. Each of the plant's 9 units was retrofitted by removing the last two ESP fields and installing bag filters. The project was completed on schedule by late 2011. Performance has improved with emissions consistently below 40 mg/Nm3 and a more stable and efficient operation.
Aluminium World Journal 2015-2016 edition.
Aluminium World Journal covers the latest technology and market strategy developments of the aluminium industry.
gmcprodduction@gmx.com
ABB- HIGHLY EFFICIENT POWER CONVERSION SYSTEMS WITH THE LATEST SAFETY DESIGN FOR ALUMINIUM SMELTERS
Rio Tinto- The Rio Tinto Development of the AP60 and APXe Pot Technology
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FIVES - HeliosRT, the latest technology implemented by Fives at Vlissinge
FLSMIDTH MÖLLER®- Alumina Handling Systems, High Performance, High Efficiency
STAS SIRS: A new solution for pot ramming: the PRM
HENCON Smart industrial mobile solutions
BORGESTAD FABRIKKER Your next generation refactories
SIWERTELL- GIVE SIWERTELL A CHANCE TO AMAZE YOU
INNOVATHERM The impact of the firing and control system for a production boost in the baking area
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OUTOTEC ARTS®- A new Tool for Optimization of Anode Performance
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Advancements in Electromagnetic Stirring for Aluminum Furnaces
STAS More than 25 years in Molten Metal Treatment
Presented by Mr G. Pandian, Energy Economist, Bureau of Energy Efficiency (BEE), India at the IEA DSM Programme workshop in New Delhi, India on 2 April 2008.
Aluminium World Journal 2015-2016 edition.
Aluminium World Journal covers the latest technology and market strategy developments of the aluminium industry.
gmcprodduction@gmx.com
ABB- HIGHLY EFFICIENT POWER CONVERSION SYSTEMS WITH THE LATEST SAFETY DESIGN FOR ALUMINIUM SMELTERS
Rio Tinto- The Rio Tinto Development of the AP60 and APXe Pot Technology
Rio Tinto- MESAL™, The Manufacturing Excellence Solution for the Aluminium World
FIVES - HeliosRT, the latest technology implemented by Fives at Vlissinge
FLSMIDTH MÖLLER®- Alumina Handling Systems, High Performance, High Efficiency
STAS SIRS: A new solution for pot ramming: the PRM
HENCON Smart industrial mobile solutions
BORGESTAD FABRIKKER Your next generation refactories
SIWERTELL- GIVE SIWERTELL A CHANCE TO AMAZE YOU
INNOVATHERM The impact of the firing and control system for a production boost in the baking area
STAS SIRS 3D Anode Stub Inspection System (ASIS3D)
OUTOTEC ARTS®- A new Tool for Optimization of Anode Performance
ABB- Making your Processes Measure Up
REDEX-Latest REDEX innovations offer the most advanced Tension leveler for Aluminium rolling
ABB Metallury- Electromagnetic Stirring Solutions from ABB
Advancements in Electromagnetic Stirring for Aluminum Furnaces
STAS More than 25 years in Molten Metal Treatment
Presented by Mr G. Pandian, Energy Economist, Bureau of Energy Efficiency (BEE), India at the IEA DSM Programme workshop in New Delhi, India on 2 April 2008.
Aluminium World Journal is published and distributed once a year to decision makers within the Aluminium industry. Aluminium World Journal provides readers -with exclusive company profiles and editorials - the resources to aid in decision making and management strategies.
www.globalmediacommunication.com
gmcproduction@gmx.com
*Siemens Metals Technologies:
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Effective Project management brings a lifetime of benefit for aluminum producers
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* STAS INC: World class electrolysis equipment from STAS
*BROCHOT GROUP: ADVANCED TECHNOLOGY FROM BROCHOT - A PROVEN SOLUTION FOR ANODE SLOT CUTTING
*INNOVATHERM: Upgrade of existing Fume Treatment Plants to cope with higher anode production requirements
*ALSTOM:
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MATERIALS HANDLING AND TRANSPORTATION
*RTA ALESA
*COPERION GmbH:
How should a state of the art vacuum ship unloader look like?
CARGOTEC SWEDEN BULK HANDLING AB:
Totally enclosed Siwertell technology delivers on all counts
* NEUERO: MARKET REVIEW -Developments in Alumina & Pet Coke Ship Unloaders
*SMV A/S:
FRESH THINKING FOR A BETTER WORKING ENVIRONMENT AND IMPROVED EFFICIENCY
CORPORATE PROFILES
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Cast House
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The following pdf is a Project Report about my Industrial Training at NTPC Limited Simhadri, Visakhapatnam, Andhra Pradesh, India. It includes all the fundamentals of a Thermal Power Plant: its layout, various departments, principal components etc. It also contains a brief profile about the company.
A Industrial Training Report On ADANI POWER LIMITEDSaikat Bhandari
It is a matter of great pleasure and privilege for me to present this report of six weeks industrial training. Through this report, I would like to thank numerous people whose consistent support and guidance has been the standing pillar in architecture of this report.
Aluminium World Journal is published and distributed once a year to decision makers within the Aluminium industry. Aluminium World Journal provides readers -with exclusive company profiles and editorials - the resources to aid in decision making and management strategies.
www.globalmediacommunication.com
gmcproduction@gmx.com
*Siemens Metals Technologies:
The benchmark in aluminium rolling
Effective Project management brings a lifetime of benefit for aluminum producers
EPC & INDUSTRY PROJECTS
*ABB SWITZERLAND:
Rio Tinto Alcan ISAL Smelter in Iceland Expansion Project
BAUXITE MINING TO ALUMINA
* UC RUSAL:
UC Rusal Recycling Red Mud
PRIMARY SMELTING AND PROCESSES
*STAS INC: The STARprobe TM
A new technology allowing simultaneous measurements of four crylitic bath properties in only four minutes
*ECL: The ECLTM New Concept Furnace Tending Assembly: focus on safety, productivity and Operational costs savings
*FLSmidth: MÖLLER Alumina Handling Systems - High performance, high efficiency
ANODE PLANT TECHNOLOGY
*RIEDHAMMER GmbH
*FIVES SOLIOS: HELIOS RT - REAL TIME CENTRAL CONTROL FOR ANODE BAKING FURNACES
* STAS INC: World class electrolysis equipment from STAS
*BROCHOT GROUP: ADVANCED TECHNOLOGY FROM BROCHOT - A PROVEN SOLUTION FOR ANODE SLOT CUTTING
*INNOVATHERM: Upgrade of existing Fume Treatment Plants to cope with higher anode production requirements
*ALSTOM:
Novel Anode Bake Furnace Gas Cleaning
MATERIALS HANDLING AND TRANSPORTATION
*RTA ALESA
*COPERION GmbH:
How should a state of the art vacuum ship unloader look like?
CARGOTEC SWEDEN BULK HANDLING AB:
Totally enclosed Siwertell technology delivers on all counts
* NEUERO: MARKET REVIEW -Developments in Alumina & Pet Coke Ship Unloaders
*SMV A/S:
FRESH THINKING FOR A BETTER WORKING ENVIRONMENT AND IMPROVED EFFICIENCY
CORPORATE PROFILES
Rolling Mill
*ABB AB FORCE MEASUREMENT
Cast House
*HYCAST AS
*Küttner IST Technology
*JASPER GmbH
Heat Treatment
*SECO/WARWICK GROUP
Aluminum Air Battery: How Do They Work? (Plus DIY)Dr.Raja R
Aluminum Air Battery: How Do They Work? (Plus DIY)
, Aluminum Air Battery Experiment, Procedure of Making Simple Aluminum Air Battery, Working Principle of Aluminum Air Battery, Chemical Reaction of Aluminum Air Battery, Aluminum Air Battery Equation,
Project Report on Industrial Summer Training at NTPC SimhadriAshish Uppu
The following pdf is a Project Report about my Industrial Training at NTPC Limited Simhadri, Visakhapatnam, Andhra Pradesh, India. It includes all the fundamentals of a Thermal Power Plant: its layout, various departments, principal components etc. It also contains a brief profile about the company.
A Industrial Training Report On ADANI POWER LIMITEDSaikat Bhandari
It is a matter of great pleasure and privilege for me to present this report of six weeks industrial training. Through this report, I would like to thank numerous people whose consistent support and guidance has been the standing pillar in architecture of this report.
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3. AWARDS & RECOGNITION
CPP-VAL has been Awarded 1st Prize in
“National Energy Conservation Award-
2012” by Bureau of Energy Efficiency in
Thermal Power Sector.
CPP-VAL was Awarded 2nd Prize in
“National Energy Conservation Award-
2011” by Bureau of Energy Efficiency in
Thermal Power Sector.
CPP- VAL along with Smelter is
Awarded by Frost & Sullivan Green
Manufacturing Award-2013.
CPP-VAL is certified ISO-50001:2011
Energy Management System (EnMS).
CII award for “Excellence in Energy
Management-2013”
4. PLANT PROFILE
Largest Captive Power Plant in India
Fastest completed CPP in India.
Water Source – Hirakud Reservoir
Coal Source- Mahanadi Coal Fields
High Concentration Slurry Disposal
Hybrid ESP with SPM level <
40mg/Nm3
An ISO 9001, 14001, 50001 & OHSAS 18001
Certified Company
10/8/2013
8. OLD ESP TO HYBRID ESP
STEP TOWARDS SUSTAINABILITY
9. CHALLENGE
SPM levels of all the Units were slightly higher than
the standard norms.
Anticipated more stringent norms of emissions
(< 50 mg/Nm3) to be enforced in near future.
STATUTORY ENVIRONMENTAL NORMS
136
105
113
125 126 119 125 127
111
99 92
81
0
40
80
120
160
200
Apr-11 May-11 Jun-11 Jul-11 Aug-11 Sep-11 Oct-11 Nov-11 Dec-11 Jan-12 Feb-12 Mar-12
AVERAGE SPM (2011-12) Average SPM
10. CHALLENGE
CPP was designed for coal of 3300 kcal / Kg and 41 % ash.
The average GCV and Ash content of used coal was 2500 kcal / kg
& ash of 50-55 %.
Ash has a high resistivity.
Characteristics of coal and ash not consistent with the design.
Reduction in the collection efficiency of ESP’s.
COAL & ASH CHARACTERSTICS
12. CAUSE & EFFECT
MATERIAL
MACHINE
METHODSMEN
High Ash
High resistivity
Distribution screen
Electrode alignment
PF Coal/Ash grain size
Ash Evacuation
Control of O2
Uniform coal
feeding
Conveying air flow/pressure
Rapping cyclesTemp monitoring
ESP Controllers
Slurry disposal/SILO level control
Maintenance
practices
Ash evacuation
cycle timing
Size of Fields
SPM around 100
mg/Nm3
High flue gas
volume
Transformer sizing
High SCC
13. ALTERNATIVES CONSIDERED
a) Continue to run with present ESPs with ammonia dosing:
b) Going for dual conditioning system Ammonia
c) Going for Retrofitting of current ESP with addition of extra fields
d) Retrofit the ESP and install a fabric filter plant with high temperature
bags:
15. CONCEPT OF HYBRID ESP’s
ESP-FF hybrid precipitator is a combination of ESP & Fabric filter.
It has an advantage of both ESP & Fabric filter.
Gases are separated from dispersed particles by passing it through
fabric medium.
Particles that are not able to
penetrate will remain on the
surface of medium so called
“Filter cake”.
90% dust collection is done by
ESP fields rest by bag filters.
16. FABRIC FILTERS
Fabric filters has one or more compartment
containing cylindrical fabric bags.
Compartment system generally contain
multiple rows of bags.
Normally service life of fabric filter is 3 to 4
years.
Fabric filter system is fitted with high
temperature bags - Polyphenylenesulphide
(PPS).
Low temperature bags - Polyacrylonitrile
(PAN) may also be used.
18. HYBRID ESP- THE PROJECT
VAL-CPP has undergone Bag filter modification in a phased manner.
Last two fields of ESP were removed and bag filter was installed.
Modification completed for all the 9 units.
EPC contractor – SEPCO.
19. HYBRID ESP- THE PROJECT
Project Zero date – Nov-2011.
Manpower involved in each unit is around 300.
53 m3 of concreting was done.
454 tones of steel erection.
Timely completion of the project as per schedule.
20. DISMANTLING OF OLD ESP
Top penthouse & monorail Hoist are dismantled.
Outer roof along with Inner roof are dismantled with insulator
compartments.
Collecting plates along with Emitters are separated out along with
suspension frame & rapping mechanism.
Distribution plates with hopper baffles & recti formers are dismantled.
Total 2700 Tones of structure was dismantled from Old ESP.
21. DISMANTLING OF OLD ESP
Dismantling of Flue gas duct before & after ID Fan.
ID Fan dismantling along with bearing housing, Impeller motor & support
structure.
Rectifier Transformers along with cables & insulators are dismantled.
22. ERECTION OF HYBRID ESP
Erection of outer & inner roof with roof beam.
Commissioning of Air tanks & guide equipment.
Erection of gas path system, pre coating pipelines , cage & bag filters
arrangement.
ID Fans support structure installation.
Erection of bypass duct & dampers.
23. ERRECTION OF HYBRID ESP
Installation of Flue gas duct along with motor dampers.
Installation of ID Fans with Casing ,Impeller , Rotor, Bearing house &
Expansion Joints.
Installation of new Compressors with driers & filters.
Insulation of total System.
27. HYBRID ESP- AFTER COMMISSIONING
Fabric filter system is fitted with high temperature bags -
Polyphenylenesulphide (PPS) were considered taking the worst scenario.
The performance of the plant is good with emission values consistently
below the 40mg/Nm3.
Filter Plant Type : Pulse Jet
Filtration Velocity : 1.04 m/min
Bag Material : PPS (PTFE Impregnation Treatment)
Bag Quantity : 5002
Bag Specification : Dia 130 X 8065
Injection Pressure : 0.25 -0.35 MPa
28. HYBRID ESP- PERFORMANCE
Reductions in SPM < 40 mg/Nm3.
Improvement in collection efficiency and stable operation of ESP’s.
Reduction in energy consumption of ESP’s.
Increase in life of bag filters due to small pressure difference across filter
bags.
Maintenance friendly.
OPTIPOW pulse valve adopted to guarantee high efficiency and for.
stable and reliable ash removal.
The operation of the equipment is controlled by PLC through the
temperature, pressure differential pressure, current, voltage and the
travel feedback signal.
31. HYBRID ESP – BAG CLEANING SYSTEM
Fiber filter adopts differential pressure control mode for cleaning the ash
deposited on bag.
Differential pressure of dust collector is the criterion for ash removal
from bag filters.
Ash removal will not stop until differential pressure of bag filter drops
below the set value.
When the differential pressure of the dust
collector surpasses a setting value, PLC
will transmit a signal to the pulse
controller, then the pulse valve will
open, the compressed air in the air tank will
instantly release and enter into the filter
bag. The dust cake accumulated on the
outside will break and get loose and then
drop into dust hopper when the filter bag
expands
32. HYBRID ESP – OPERATION
Amount of moist, acid and sticky dust collected on the filter bags during
the start-up phase to be minimized.
The FF shall not be connected to the flue gas stream until coal starts to
be fired in the boiler and the thermal power achieves 80% above the
total thermal power.
The flue gas temperature ought to be at least 20℃ above the acid dew
point.
Main monitoring Screen
33. HYBRID ESP – MAINTENANCE
Regular checking of differential pressure of dust collector.
Monitoring of gas flow.
Checking the compressed air of pulse cleaning dust collector.
Checking nozzle compartments and dust hopper for dust accumulations.
When about 10% of the bags in a compartment have been blocked, all
damaged bags shall be replaced.
34. BEST PRACTICES
The most common and usual problem with pulse injection FF is the
water and oil content in compressed air which is used for ash discharge
from filter bag.
The water and oil permeates the filter material, wetting the dust, which
chokes the filter bag.
This increases the pressure drop and finally the bag is to be replaced.
HIGH QUALITY OF COMPRESSED AIR
35. BEST PRACTICES
During commissioning pre coating of bag filters is required before taking
the system into service.
After long shutdown of the unit or if bag purging is done in shutdown
condition Pre-coating is required.
PRE COATING OF BAG FILTERS AFTER LONG SHUTDOWNS
36. BEST PRACTICES
In case of tube leakages unit shutdown should be taken
immediately, otherwise pressure drop in bags may increase.
In case of If Oil Gun is taken into service the bag filters need to be
bypassed.
During light up or Shutdown of the Unit bag filters will only be taken into
service after removal of Oil Guns.
IMMEDIATE SHUTDOWN OF UNIT IN CASE OF TUBE LEAKAGES