Unique NITROMEM® Marine Membrane Nitrogen Generators with patented solutions for shipboard nitrogen generation.

1. Unique solutions for
shipboard nitrogen generation

2. Index
Competence and Trust 3
Nitrogen Generation for LNG or Dual Fuel Propulsion 4
NITROMEM® Marine Nitrogen Membrane Generators 7
NITROMEM® Advantages 9
Technical Specifications 10
Why Noxerior? 11
NOXERIOR – Competence and Trust
NOXERIOR focuses on all aspects of the production of
dry compressed air and its non-cryogenic separation
for on-site generation of nitrogen and oxygen; we
help our customers to reduce their costs by offering
a customized solution based on either Pressure Swing
Adsorption (PSA) or hollow-fibre membrane technology.
The unique and patented technology applied for our
NITROSWING® and OXYSWING® modular PSA gene-
rators has set market standards in terms of flexibility,
efficiency and reliability. Our special packages for in-
strument air, nitrogen or oxygen generation, designed
according to customer’s specifications and suitable
even for operation at extreme ambient conditions,
are well known for their high level of engineering and
outstanding quality.
SHAPING
THE FUTURE
Behind all our activities lies trust: the trust our custo-
mers have in our ability to meet their specific needs
in terms of both quality standards and agreed delivery
terms.
Our prime aim is to establish a long-term professional
relationship based on transparency and reliability. Our
customers appreciate our capacity for smooth project
execution and on-time delivery.
NOXERIOR has an export quote of almost 90% with
customers located in all corners of the world.
2 3

3. NITROMEM®
Shipboard
Nitrogen
Applications
LNG is considered as one of the few fuels capable of mee-
ting ever-tightening emissions regulations in the years
ahead. Using LNG as fuel for ship propulsion offers clear
environmental benefits compared to the conventional
HFO fuelled propulsion solutions, as the elimination of SOX
emissions, a significant reduction of NOX
and particulate
matter as well as a reduction of GHG emissions.
Like other combustible liquids,LNG is not flammable in the
liquid phase and cannot ignite,but in the vapour phase it is
highly flammable and will readily burn when there is a 5 to
15 percent by volume mixture with air.
Nitrogen is an inert gas and as such can prevent a flam-
mable mixture from occurring.Therefore,the presence of a
reliable on-board nitrogen supply source will be mandatory
in case of LNG fuelled ship propulsion.
The NITROMEM® Marine Nitrogen Membrane Generators
from NOXERIOR are the right solution to meet this strin-
gent condition.
The application of NITROMEM® Marine Nitrogen Mem-
brane Generators from NOXERIOR for LNG or dual fuel
propulsion can be divided into two categories:
General LNG Fuelled / Dual-Fuelled Vessels
nn Inerting of bunkering station equipment and liquid
bunkering lines before and after bunkering,
nn Purging and inerting of LNG piping inside the Cold
Box (vaporizer & PBU (Pressure Build-up Unit)) after
tank outlet valve,
nn GVU (Gas Valve Unit) purging,
nn Sealing of double wall fuel gas pipes in the E/R
(Engine Room),
nn Purging of fuel gas pipes and complete fuel gas supply
system on the engine, particularly after gas fuel stop
or shutdown by the engine’s Gas Injection Control and
Safety System,
nn Inerting of hold space/gas fuel storage room in case of
LNG tank installation inside the ship’s hull,
and specific additional applications for
Dual-Fuelled LNG Carriers
nn Operation of diaphragm actuators of valve unloaders
on the BOG compressors to unload one half of the
double-acting cylinders,
nn Continuous purging of the insulation spaces of the
BOG re-liquefaction system cold box (if such system
is installed on the carrier),
nn Dry seal inerting of both the compressor and the turbo-
expander of the eventual on-board BOG re-liquefaction
system,
nn Inerting of the hold and inter-barrier spaces between
the LNG tanks and the ship’s hull,
nn Purging of cargo liquid line, vapour line, gas line, vent
masts and related cargo equipment.
On-board installed nitrogen generators are being operated
successfully for this specific application on various other
types of vessels, like PSVs, bulk carriers, chemical tankers
and ferries. The smallest NITROMEM® Marine Nitrogen
Membrane Generators are also suitable for LNG bunkering
barges.
The cargo tanks of IMO II & III oil and chemical tankers,either
empty or filled,are normally protected against explosion by
inert gas blankets. Inert gas is also required for cargo strip-
ping,cargo padding and purging of cargo piping.
As a result of changes to SOLAS, the Fire Safety Systems
(FSS) Code and the International Bulk Chemical (IBC) Code,
all oil and chemical tankers of 8.000 DWT and above must
be provided with a fixed inert gas system.The revised SOLAS
allows the application of inert gas to be postponed until
after loading but before the commencement of unloading,
although only nitrogen is accepted as inert gas medium
because of the risk of generating static electricity by using
exhaust gas.
The on-board nitrogen generator shall have a design capacity
of 125% of the cargo unloading rate and deliver inert gas with
an oxygen content of not more than 5% by volume to the
cargo tanks at any required flow rate.
The NITROMEM® Marine Nitrogen Membrane Generators
from NOXERIOR meet all requirements for inert gas systems
as specified in Chapter 15 of the amended FSS code (IMO
– MSC 93/22/Add.1 – Annex 3) conform IMO resolution
MSC.367(93).
Nitrogen Generation for LNG or
Dual Fuel Propulsion
Nitrogen Generation on Oil & Chemical
Tankers and Gas Carriers (non LNG).
4 5

4. NOXERIOR has an experience of more than thirty years
with the design and manufacturing of nitrogen gene-
rators based on air separation by either Pressure Swing
Adsorption (PSA) or hollow-fibre membranes. Having a
profound knowledge of both processes, the hollow-fibre
membrane technology has been considered the preferred
solution for the NITROMEM® Marine Nitrogen Generators:
n Continuous process compared to intermittent PSA
process. The absence of moving parts stands for
increased reliability and system availability,
n Reduced system footprint, no need for feed air
dryer and feed air receiver. Smaller dimensions of
the membrane nitrogen generator,
n Stable nitrogen production capacity compared
to falling production capacities of PSA generators
at increasing feed air temperatures (more than
20% loss of capacity from 20 to 35 °C in comparison
to equivalent membrane systems).
Best Possible Feed Air Conditioning.
Despite the relatively limited annual operating hours, the
NITROMEM® Marine Nitrogen Membrane Generators in-
clude an extended feed air filtration and conditioning to
remove condensate, oil traces, oil vapours and particles
to avoid potential clogging of the permeable hollow-fib-
re walls. Optimum flow conditions through the air filters
are guaranteed over the long exchange intervals in order
to ensure a correct air filtration, even immediately after
system activation from stand-by mode. All filtration
elements are easily accessible from one side of each ge-
nerator. Maintenance of the integrated activated carbon
tower in narrow spaces is extremely easy thanks to the
application of NOXERIOR’s patented modular adsorber
design.
Production of Extremely Dry Nitrogen.
The hollow-fibre membrane modules of the NITROMEM®
Marine Nitrogen Membrane Generators also have an
outstanding drying capacity as water vapour will be the
first component of the incoming feed air to permeate
through the membrane wall. A feed air heater will en-
sure that all remaining water traces will be in the vapour
state at module inlet.
This feature allows the NITROMEM® Marine Nitrogen
Membrane Generators to produce nitrogen with an
unmatched low dew point of less than -70 °C, unreacha-
ble by any PSA nitrogen generator without additional
adsorption drying. Low dew point values for the produced
nitrogen are essential to avoid icing damage in hold- and
inter-barrier spaces between the LNG tanks and the ship’s
hull or in cold boxes.
No Need for Back-Purging.
Unlike other marine nitrogen generators, the
NITROMEM® Marine Nitrogen Membrane Generators
don’t require any additional back purge line installed
between the nitrogen system and the external nitrogen
buffer tank for dew point preservation. A NITROMEM®
Marine Nitrogen Membrane Generator in stand-by
mode will be able to supply on-spec nitrogen within
only 3 seconds from start signal.
Easy Integration with the Vessel’s IAS.
The control system of the NITROMEM® Marine Nitro-
gen Membrane Generators allow any direct connection
to the vessel’s IAS (Integrated Automation System)
through Ethernet connection Modbus TCP/IP, Modbus
RTU or Profibus DP for remote monitoring and system
start/stop. Remote monitoring is also available for
Smartphones or Tablets, eventually by means of an
optional Wi-Fi module.
Certified for Marine Application.
All NITROMEM® Marine Nitrogen Membrane Genera-
tors have a TAC (Type Approval Certificate) released by
LR to confirm their suitability for installation in ships
machinery spaces in accordance with the requirements
of the Rules of the Classification Society, IMO, FSS
code and SOLAS. Moreover, the NITROMEM® Marine
Nitrogen Membrane Generators are also certified to be
compliant with the essential Marine-pollution preven-
tion requirements of the Marine Equipment Directive
(MED) 96/98/EC and related successive Commission
Directives.
NITROMEM®
Marine Nitrogen Membrane Generators.
APPROVED
TYPE APPROVAL
SCHEME
6 7

5. Convenience
Automatic and unattended operation. Fully automatic starting
and stopping of the nitrogen production in direct response to
demand from the vessel’s downstream nitrogen consumption.
Easy,intuitive graphical operator touch-panel. Full integration
with the vessel´s IAS.
High System Reliability & Quality
First-class components, stainless steel process piping, valves
and regulators, heavy-duty PLC. Extended feed air filtration,
including activated carbon tower, and feed air condition
monitoring. It should work. Always.
Guaranteed Stable Nitrogen Purity
Real-time purity monitoring in combination with an automatic
blow-off system and a nitrogen discharge flow regulation
guarantees you that your produced nitrogen always corres-
ponds with the defined specifications, even in case temporary
nitrogen demand would exceed the rated production capacity
of your NITROMEM® Marine Nitrogen Membrane Generator.
Ultra-Fast Reaction Time
The fastest marine nitrogen generator on the market: from
stand-by mode to the supply of on-spec nitrogen within only
3 seconds after start signal. Fast reaction times allow the
installation of significant smaller shipboard nitrogen receivers
compared to any other marine nitrogen generator.
Compact
All NITROMEM® Marine Nitrogen Membrane Generators
represent the most compact shipboard nitrogen generators
currently available on the market. At similar performance data,
30 to 40% less installed volume than competing products des-
pite the integration of a more extensive feed air conditioning
system.
Easy Fleet Management
Modular design and identical components for the entire model
range mean limited spare part management,fast supplies and
easy maintenance.
NITROMEM® Advantages
8 9

6. Residiual Oxygen Content 0,5 vol.% 1,0 vol.% 2,0 vol.% 3,0 vol.% 5,0 vol.%
Feed Air
Pressure
bar(g)
psig
7,5
110
10
145
13
190
7,5
110
10
145
13
190
7,5
110
10
145
13
190
7,5
110
10
145
13
190
7,5
110
10
145
13
190
NM-9 M
Nm³/h
scfh
5,6
209
7,6
284
10,1
377
7,9
295
11,0
411
14,6
545
11,4
426
16,5
616
22,2
829
15,2
567
21,5
802
28,5
1.064
22,5
840
32,2
1.202
43,8
1.635
NM-18 M
Nm³/h
scfh
11,2
418
15,2
567
20,2
754
15,8
590
22,0
821
29,2
1.090
22,8
851
33,0
1.232
44,4
1.657
30,4
1.135
43,0
1.605
57,0
2.128
45,0
1.680
64,4
2.404
87,6
3.270
NM-27 M
Nm³/h
scfh
16,8
627
22,8
851
30,3
1.131
23,7
885
33,0
1.232
43,8
1.635
34,2
1.277
49,5
1.848
66,6
2.486
45,6
1.702
64,5
2.407
85,5
3.191
67,5
2.519
96,6
3.606
131,4
4.904
NM-36 M
Nm³/h
scfh
22,4
836
30,4
1.135
40,4
1.508
31,6
1.179
44,0
1.642
58,4
2.180
45,6
1.702
66,0
2.463
88,8
3.314
60,8
2.269
86,0
3.210
114,0
4.255
90,0
3.359
128,8
4.807
175,2
6.539
NM-45 M
Nm³/h
scfh
28,0
1.045
38,0
1.418
50,5
1.885
39,5
1.474
55,0
2.053
73,0
2.725
57,0
2.128
82,5
3.079
111,0
4.143
76,0
2.837
107,5
4.012
142,5
5.319
112,5
4.199
161,0
6.009
219,0
8.174
NM-54 M
Nm³/h
scfh
33,6
1.254
45,6
1.702
60,6
2.262
47,4
1.769
66,0
2.463
87,6
3.270
68,4
2.553
99,0
3.695
133,2
4.972
91,2
3.404
129,0
4.815
171,0
6.383
135,0
5.039
193,2
7.211
262,8
9.809
NM-63 M
Nm³/h
scfh
39,2
1.463
53,2
1.986
70,7
2.639
55,3
2.064
77,0
2.874
102,2
3.815
79,8
2.979
115,5
4.311
155,4
5.800
106,4
3.971
150,5
5.617
199,5
7.446
157,5
5.879
225,4
8.413
306,6
11.444
NM-72 M
Nm³/h
scfh
44,8
1.672
60,8
2.269
80,8
3.016
63,2
2.359
88,0
3.285
116,8
4.360
91,2
3.404
132,0
4.927
177,6
6.629
121,6
4.539
172,0
6.420
228,0
8.510
180,0
6.718
257,6
9.615
350,4
13.079
Product
Pressure
bar(g)
psig
5,7
83
8,2
119
11,2
162
5,7
83
8,2
119
11,2
162
5,7
83
8,2
119
11,2
162
5,7
83
8,2
119
11,2
162
5,7
83
8,2
119
11,2
162
Dew Point (2)
°C / F < -70 / -94
Sound LevelLeg
dB(A) 44 - 70 @ 1 meter distance (max. value only during off-spec nitrogen blow-off)
(1) Definition of Nm³ based on reference conditions 0 °C, 101,325 kPa(a) and dry basis.
Indicated flow rates are valid for operation of the generator at atmospheric conditions 20 °C / 70 °F, 1013 mbar / 14,7 psi and 60% RH.
(2) Pressure Dew Point
Technical Specifications
Standard Components
n Feed Air Filtration, incl. Modular Activated Carbon Tower
to patented NOXERIOR design
n Electric Feed Air Heater
n Process Piping & Fittings in Stainless Steel
n Feed Air & Nitrogen Pressure Transmitters
n Feed Air Temperature Transmitter
n Feed Air Moisture Analyser
n Oxygen Analyser with Zirconium-Oxide Sensor
n Electronic Nitrogen Flow Meter
n Automatic Off-spec Nitrogen Blow-off System
n Nitrogen Pressure Regulation
n Control System with Siemens PLC
n Siemens Interactive 7”Touch Screen HMI
n Ethernet Connection Modbus TCP/IP
n App for Remote Monitoring by Smartphone or Tablet
n Marine Painted Carbon Steel Cabinet
n TAC and MED Certificate from LR
Options
n Nitrogen Moisture Analyser
n Modbus RTU or Profibus DP Data Connection
n WiFi or GSM Communication Module
n Analogue Output Signals Module (4 – 20 mA)
n ANSI / DIN / JIS Flanged Connections
n External Nitrogen Booster with Cylinder Filling Manifold
n Class Approval by Major Classification Society
Due to the unique design features of the NITROMEM®
Marine Nitrogen Membrane Generators, NOXERIOR
can supply you the most compact units on the market
for the on-board production of nitrogen.
Our systems, including air compressors, can be sup-
plied turn-key installed either on a single skid or inside
a top deck container and will be suitable for operation
under harsh marine or offshore ambient conditions.
NOXERIOR also has experience with the supply of
specially designed nitrogen generation plants for
offshore platforms. Please contact us directly in case
you would be interested in one of our special products.
Special Products
A reliable and responsive after-sales service is an
integral part of NOXERIOR’s business philosophy. Our
technicians or our local partners for the NITROMEM®
Marine Nitrogen Membrane Generators are able to
assist you with correct installation and maintenance
of your system.
Critical spare parts are always available on stock and
can be supplied immediately to any location in the
world.
After-Sales Service
All activities within our company strictly comply with
the procedures of our certified quality management
system to both ISO 9001:2008 and ISO 13485:2012,
which are regularly updated and optimised.
Before packing and shipment each NITROMEM® Ma-
rine Nitrogen Membrane Generator will be thoroughly
tested.
Quality
According to our environmental management system
certified to ISO14001:2004 and EMAS we constantly
verify and correct our consumption of utilities and our
waste disposal and we pay special attention to the
material selected for our products and services.
Our Health & Safety system is implemented and
applied according to national Italian legislation with
periodic external verification by local authorities.
Health, Safety & Environment
Please ask for the latest version of our reference list.
References
Model Length
mm (inch)
Width
mm (inch)
Height
mm (inch)
Weight
kg (lbs)
NM-9 M
1.200
47
700
28
2.000
79
315
695
NM-18 M
1.200
47
700
28
2.000
79
330
730
NM-27 M
1.200
47
700
28
2.000
79
380
840
NM-36 M
1.200
47
700
28
2.000
79
395
870
NM-45 M
1.700
67
700
28
2.000
79
500
1.100
NM-54 M
1.700
67
700
28
2.000
79
515
1.135
NM-63 M
1.700
67
700
28
2.000
79
565
1.245
NM-72 M
1.700
67
700
28
2.000
79
580
1.280
Power Supply 110–230 V / 50–60 Hz
Power Consumption 1,3 - 2,3 kW
Standard Components
Feed Air Filtration, incl. Modular Activated Carbon Tower
to patented NOXERIOR design
Electric Feed Air Heater
Process Piping & Fittings in Stainless Steel
Feed Air & Nitrogen Pressure Transmitters
Feed Air Temperature Transmitter
Feed Air Moisture Analyser
Oxygen Analyser with Zirconium-Oxide Sensor
Electronic Nitrogen Flow Meter
Automatic Off-spec Nitrogen Blow-off System
Nitrogen Pressure Regulation
Control System with Siemens PLC
Siemens Interactive 7”Touch Screen HMI
Ethernet Connection Modbus TCP/IP
App for Remote Monitoring by Smartphone or Tablet
Marine Painted Carbon Steel Cabinet
TAC and MED Certificate from LR
Power Supply 110–230 V / 50–60 Hz
Power Consumption 1,3 - 2,3 kW
10 11

7. NOXERIOR s.r.l.
Via Giordania, 48
58100 Grosseto – Italy
Tel.: +39 (0564) 45 80 41/42
Fax: +39 (0564) 45 80 43
E-Mail: info@nitromem.com www.nitromem.com