Air inlet filtration for gas turbines,
compressors and engines
Efficient solutions for your air intake system
NORDIC AIR FILTRATION
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Solutions for all types
of environments
We are specialized in Gas Turbine Air intake Filtration with installations all
around the globe
Nordic Air Filtration & DELBAG are on a mission to
supply air intake systems with effective air filtration
solutions. Our unique protection systems for turbo
machinery systems have successfully been used
across the globe for decades.
We call it getting stronger. Combining forces as both
brands are now members of the Hengst group have
extended our range of solutions that Nordic and
DELBAG are now able to provide. For every single selection of raw material, our mind is set on meeting
your specific air inlet filtration needs. Trust is the base
of all partnerships and ensures top-level on-site technical field support.
Owner of the Hengst Group, Jens Röttgering shares
the vision of making this planet a purer place and
there is no alternative. The Hengst group has shared
this SOUL experience and has for more than a century supplied filtration solutions for automotive and a
wide range of mechanical engineering applications.
Nordic and DELBAG both rely on multiple manufacturing sites across continents in the northern hemisphere, stretching all the way from North America in
the West across Europe to Asia in the East for producing our products. R&D teams in Germany and
Denmark are making sure that our products are fit
for tomorrow. With everything we do, we strive to
continuously improve our filters giving them the cutting edge, warranting our customer’s filtration performance and reducing the total costs of ownership.
You can rely on the joint forces of Nordic and
DELBAG filtration solutions no matter what the particular outside conditions are. Is your gas turbine installed in arctic conditions? Is your facility exposed to
frequent sandstorms? Do your regular temperatures
exceed the 40 °C mark on a daily basis? Is your filter
house located in coastal areas or on an offshore platform? DELBAG and Nordic will provide the right solutions whatever your condition may be.
Desert
Hot and dry with heavy
concentration of blowing
sand
Coastal
Corrosive moisture
and high humidity
Tropical
High temperature and
humidity
Offshore
Salty corrosive moisture,
high humidity and
occasional heavy fog
Arctic
Dry air, snow, and frost
can block filters
Urban
Polluted air and high
levels of hydrocarbons
and particles
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
3
A whole range of air intake
filters, newly categorised
Individual solutions for all ambient conditions
The new worldwide filter standard ISO 16890 introduces a classification of filters into new filter groups
and a realistic filter test, which primarily makes it
easier for the user to select the filter efficiency of the
filter in relation to the outdoor-air pollution in its environment.
The new system reduces the filter classification to
only four groups compared to the previous nine filter
classes. It is oriented on the size of the particles to be
filtered. This makes it easier for the user to find and
select the demand-driven filter configuration in practice – also with respect to the degree of arrestance
and energy efficiency.
A filter must separate at least 50% of the respective
particle size (PM) in order to be assigned to one of
the four filter groups.
PM1
PM2.5
ISO ePM1 95%
ISO ePM1 90%
ISO ePM1 85%
F9
ISO ePM1 80%
ISO ePM1 75%
ISO ePM1 70%
ISO ePM1 65%
ISO ePM1 60%
ISO ePM1 55%
ISO ePM1 50%
F7
We provide the complete range of static and cleanable filters, covering the new ISO16890 standard classification from ePM1 to Coarse – the corresponding
to the filter classes G3 – F9 according to EN 779. We
offer customized solutions, according to the environment, application, or the space available.
PM10
Coarse
ISO ePM2,5 95%
ISO ePM10 95%
ISO Coarse 70%
ISO ePM2,5 90%
ISO ePM10 90%
ISO Coarse 65%
ISO ePM2,5 85%
ISO ePM10 85%
ISO Coarse 60%
ISO ePM2,5 80%
F8
Thanks to the new testing and assessment method
applied by ISO 16890 compared to the old EN779,
such for instance the particle size to be measured, it
is not possible to make a one-to-one comparison of
the filters from the old filter classification to the new
ISO system. The below table provides you with an
orientation aid for understanding how filters of the
old classes have been taken over into the new classification system.
F7
ISO ePM10 80%
M6
ISO Coarse 55%
ISO ePM2,5 75%
ISO ePM10 75%
ISO Coarse 50%
ISO ePM2,5 70%
ISO ePM10 70%
ISO Coarse 45%
ISO ePM2,5 65%
ISO ePM10 65%
ISO Coarse 40%
ISO ePM2,5 60%
ISO ePM10 60%
ISO Coarse 35%
ISO ePM2,5 55%
ISO ePM2,5 50%
M6
ISO ePM10 55%
ISO ePM10 50%
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
M5
G4
ISO Coarse 30%
G3
G2
Countless options
Same supplier - complete range of air intake filters
Types of dust
100 µm
10 µm
1 µm
0.1 µm
0.01 µm
Insects
Sand
metallurgical smokes and dust
Cement dust
Soot
Spores, pollen
Oil mist
Fog
Smog
Ash
Drops
Smoke
human hair
Filter
Filter mats
Bag filter
Compact filter
Coalescer
HEPA compact filter
Pulse filter
cartridge
Deep bed filters
cartridge
Filter classes EN779:2012
G1 – G4
M5 – M6
F7 – F9
Filter classes ISO 16890
ISO Coarse
E10 – H13
EN1822
ISO ePM10
ISO ePM2.5
ISO ePM1
100 µm
10 µm
1 µm
0.1 µm
0.01 µm
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Get the right solution for your needs
Eliminate unplanned downtime, reduce maintenance costs and ensure that the
gas turbine is highly efficient with multiple stages filtration.
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Effective filtration and
increased protection
Optimized performance for specific operational conditions
We focus on implementing custom solutions, providing the whole range of air intake filters designed individually for your specific air inlet filtration needs
from the replacement of filter elements to extending
and optimization of your filtration system.
The operating costs of air intake filtration systems
can be reduced through the optimized usage of air
filters and the variation of different filter types, highly efficient media and several filter stages. As a result,
the performance and the total efficiency of a
turbomachine are significantly improved. The alignment of pressure drop and filter performance are of
great importance in order to optimize the system
operation.
Life Cycle Cost over 10 years
500.000,–
400.000,–
Operating costs
2-stages filter
300.000,–
Potential Saving
200.000,–
3-stages filter
100.000,–
0,–
1
13
25
37 Operating
43 55 time
67 79
91 109 121
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Multiple filter configurations
We offer a comprehensive range of filter combinations for
compressors and turbomachinery air filtration system, regardless
of the environmental conditions.
Cylindrical Conical Filter
Double Cylindrical Filter
Double Cylindrical Filter
CD & CDD
SDMK & SDMK
CD & CDDC
Application
Filter Classes
Material
Depth
Special Features
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
1320-1765 mm
Application
Filter Classes
Material
Optional - k profile &
stop ring
Special Features
Special Features
Optional - k profile &
stop ring
Special Features
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
660-1000 mm
Application
Filter Classes
Material
Optional - k profile &
stop ring
Special Features
Depth
Depth
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
1320-2000 mm
Optional - k profile &
stop ring
Double Conical Filter
Square End-Cap
Twist Lock
Depth
Application
Filter Classes
Material
Cylindrical Filter
Cylindrical Filter
Application
Filter Classes
Material
Depth
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
1320-2000 mm
AeroPlus
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
660-1000 mm
Application
Filter Classes
Material
Optional - k profile &
stop ring
Special Features
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Depth
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
1320-1530 mm
Optional - k profile &
stop ring
Rigid Bag Filter
Compact Filter
Bag Filter
MultiSack R
MultiForm
MultiSack N & G
Application
Filter Classes
Material
Fine filtration
ePM10
welded synthetic
Application
Filter Classes
Material
Fine filter
ePM10 - H13
microglass or synthetic/
glass mix paper
298 - 420 mm
Application
Filter Classes
Material
Depth
620 mm
Depth
Special Features
hydro- & oleophobic self
supportive stiff bags
high dust loading capacity
Special Features
completely bonded
Aluminium burst protection
high filtration surface
Special Features
optionally welded
high dust loading capacities
low pressure drop
Certification
Eurovent
Certification
Eurovent
Certification
Eurovent
Depth
Filter Mat
HEPA Filter
Panel Filter
LoTex
MultiPlus
CVP Panel Filter
Application
Filter Classes
Material
Coalescer
ISO Coarse - ePM10
hydropobic synthetic
Application
Filter Classes
Material
Depth
10 - 135 mm
Depth
Special Features
hydrophobic
droplet separator
progressive fiber structure
Special Features
Certification
Eurovent
EPA/HEPA filter
E10 - H13
premium microglass
paper
420 mm
Application
Filter Classes
Material
fully bonded
high filtrations surface
leakage test
Special Features
Depth
Pre & fine filtration
ISO Coarse - ePM1
premium synthetic or
microglass
195 - 650 mm
Fine filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
1220 mm
hydrophobic
space saving
efficient pre filtration
Cylindrical Air filter
Conical Air Filter
Coalescer Air Filter
MultiPuls
MultiPuls T
Coalescer
Application
Filter Classes
Material
Depth
Special Features
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
558-1000 mm
Application
Filter Classes
Material
Optional - k profile &
stop ring
Special Features
Depth
Fine & HEPA filtration
F8-E11/ ePM2.5 - ePM1
As per requirement - see
media range p. 10
660-910 mm
Application
Filter Classes
Material
Optional - k profile &
stop ring
Special Features
Depth
Prefilter
G3 - G4
Polyurethane foam on
polyether basis
Efficient prefiltration
of dust and humidity
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Water repellent treatment
for optimal filter protection
Upgrading your media solution can be very beneficial for you and in the
long-run reduces your Total Cost of Ownership.
Hydrophobic and oleophobic
The water repellent treatment increases the Hydrophobic and oleophobic properties of the media by
creating surface friction that improves the filter operation in humid conditions.
Water and salt repellent
Moist dust can lead to a so-called sticky dust cake,
which settles on the filter bags surface and thus reduces air permeability and makes the regeneration
more difficult. With the water repellent treatment,
the dust sticks less to the surface and the fiber degradation takes place slowly. This prolongs the service
life of the dust filter, while the power consumption
drops during cleaning.
Better airflow
Description
Name
Material
Treatment
Filter Class
140GT
Blend media
-
F9:2002
171GT
100% synthetic
-
F8:2002
TW HE**
Synthetic mix
Water repellent
F9:2012 / ISO ePM1 85%
UX Nano
Cellulose / synthetic
Electrospun Nanofiber surface
F9:2012
UX Nano FH
Cellulose / synthetic
Nanofiber + Flame retardant
F9:2012
TW EPA***
Synthetic glass mix
Water repellent
E11:1822
MultiSack G
microglass fleece
-
ePM 10 - ePM1
MultiSack K
synthetic
-
ISO Coarse - ePM2.5
MultiSack N
premium synthetic
NanoWave
-
ePM1
MultiSack R
welded synthetic
water repellent
ePM 2.5
MultiPlus
microglass paper
LoTex
treated synthetic
hydro & oleophobic
ISO Coarse - ePM10
AeroPlus
synthetic
hydro & oleophobic
ISO Coarse
Series 1000
synthetic/glass blend
ePM 2.5 - H13
ISO Coarse
* See Application/industries on page 3. ** Previously named TW Nano. *** Only for static applications.
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Application*
Guide: customize
your filter
at Nordic Air Filtration it is possible to customize your filter so it fits our
needs. You have many possibilities and we are very flexible and eager to
help you find the right solution to your specific requirements.
01
End caps
02
Mesh
››
››
››
››
›› Metal/plastic inner spiro
›› Expanded welded metal inner/outer mesh
›› (Galvanized, Stainless or Powder coated
››
››
03
Separators
04
Gasket
05
Media
Molded polyurethane (Soft/Hard)
Stainless steel
Galvanized or Powder coated
Plastic ABS - noncorrosive/100% recyclable
steel)
Expanded Helix metal inner/outer mesh
K-profile for corrosion-free quality
›› Glued strap branded with your logo
›› Weltech ultrasonic welded strap
›› (FDA compliant)
›› Seamless foam gasket
›› EPDM
›› Silicone
›› Can be equipped with
›› Nordic Air Filtration’s media
››
selection.
See our standard filter media types
on page 10
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Complete filter systems
The standard solutions from DELBAG are characterized by a dimensionally
harmonized modular design. Taking account of the operational conditions,
application type and space, we can also offer tailored air intake systems for
an optimum turbine performance.
MultiMaster Vario with infrared anti-icing
The DELBAG® Universal air-duct filter type MultiMaster-Vario permits individual solutions for the most diverse application areas. The system is equipped with
static filters, such as filter materials, bag filter, filter
elements, and roll filters. Filter classes of G2 to H13
can be presented. Thanks to their innovative design,
the casings have very high stability and long service
life.
RotaClean and pulse filter PowerTower
With the standard pulse filter system of type PowerTower, the technical advantages of the pulse filter
cartridges can also be inexpensively implemented for
smaller air volumes. Accordingly, the PowerTower is
especially employed for motors and smaller compressors.
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Static filter systems
In regions with relatively low dust concentration, a
static filter system is the most practical solution. Usually, a two-stage arrangement with pre- and fine filter
is selected in order to achieve the required filter class
and endurance. Customarily, bag filters are employed
in the first and compact filter elements in the fine filter stage.
Anti-icing systems for static filters
Pulse filter systems
Self-cleaning pulse filter plants are employed wherever there is high dust concentrations, like in desert
areas and especially burdened industrial regions. The
dust particles are separated on the surface of the filter medium. The dust cake that forms is effectively
removed on-line by counter-current pulse-jet cleaning with compressed air.
Depth filter cartridge systems
A broad field of applications can be covered with
depth filter cartridge systems. The pre-filter, which is
an economical, easy- to exchange filter sock, is pulled
directly over the depth filter cartridges. The compact
execution unites maximum filtration efficiency with
high service life. Experience has proven that anti-icing systems such as required for static plants are not
needed.
Anti-icing systems are required everywhere, where
low temperatures can occur in combination with
high air humidity. In such weather periods, the systems avoid ice formation, which can lead to a rapid
increase of the pressure loss up to the blocking of the
air filter.
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Maximum protection with premium filters
Tiny dust particles of a half micrometer size can already lead to severe consequences for the operation as well as the efficiency factor. The difference is made
between erosion, corrosion, and fouling.
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Effects of dust particles on
turbomachines and motors
Eliminate unplanned downtime with high-quality filters.
Erosion
Erosion is defined as material removal on the blades
through dust particles > 5 μm. These particles have
an abrasive effect which influences the aerodynamics of the blades, and reduces the efficiency of the
turbomachines.
Fouling
Fouling is the deposition of particles < 5 μm that
passes the filtration system and builds-up on the
compressor. The build-up up on the blades has a
negative effect on the aerodynamics which in turn
reduces the flow of the compressor and efficiency/
output reduced.
Corrosion
Corrosion inside the Gas Turbine is caused by air
contaminations – such as natrium chloride and Sulphur that can cause hot end corrosion. These contaminants lead to damages on e.g. blade.
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
15
Laboratory Testing
With our strong technical team, we examine customers’ current filters at our
laboratory facilities and establish:
>>
>>
>>
Residual filter life
Filter suitability for the specific operational environment
Suggest alternative media + design to improve filter performance
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Field Support and
Field Test
With Nordic Air Filtration & DELBAG’s wide range of products you can
extend your filtration system by one additional filter stage without any
further structural changes
Our specialist can always be present during installation of new filters to ensure correct installation, and
we can provide counseling about the most efficient
use and cleaning of filters over their operating life.
In Europe and the Middle East, we offer on-site testing of filter cartridges using our Mobile Test Rig. Our
Mobile Test Rig enables a test of two different filter
cartridges simultaneously in the actual operating environment of our customers.
Rig offers a unique opportunity to compare the efficiency of existing filter cartridges with new types of
cartridges and filter media on-site.
What can you expect from us:
›› Expertise
›› On-site testing
›› Customized solutions
›› Field support and guidance
›› Premium filters
›› Reliability
By simulating a complete operating Gas Turbine Air
Inlet Housing with pulse cleaning, the Mobile Test
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
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Global installations
We have sold numerous projects and our know-how and expertise derives
from 25+ years in the business, and from developing new products in close
collaboration with international engineering companies.
Installation
Application
Filter & Housing
Region
Gas Engine
Bag Filter
Gas turbine
Environment
Dust
Date
Indonesia
Industrial
2019
Depth loading Filter
Germany
Industrial
2018
Compressor
Pulse filter system
Saudi Arabia
Sand
2018
Compressor
Pulse filter system & filter
elements (MultiPuls) / fine
filter (MultiPlus 8400)
Pakistan
Rural
2019
Diesel Engine
Oil bath filter (RotaClean)
Iraq
Sand
2018
DELBAG & NORDIC AIR FILTRATION Members of the Hengst Group
Turbine
Filter Configuration
Region
Environment
Dust
Installation Date
GT26
ASC II Panel
Africa
Chlorides, Sand,
Hydrocarbons
2016
SGT6-4000F
Cylindrical Cylindrical
Asia
Chlorides,
Hydrocarbons
2017
Solar,
Mars100
Cylindrical
Europe
Hydrocarbons
2015
F9E
Cylindrical Cylindrical
Middle East
Sand
2016
F6B
Cylindrical
Middle East
Chlorides, Sand,
Hydrocarbons
2017
SGT6-4000F
Cylindrical
Middle East
Chlorides, Sand,
Hydrocarbons
2016
GT13E2
Conical Cylindrical
Middle East
Sand
2015
F9E
Conical Cylindrical
Middle East
Sand
2016
SGT6-4000F
Cylindrical
Middle East
Sand,
Hydrocarbons
2016
AIR INLET FILTRATION FOR GAS TURBINES, COMPRESSORS AND ENGINES
19
Your global provider of air filtration solutions
Copenhagen, DK
Nakskov, DK
Berlin, DE
Chicago, IL, USA
Nordwalde, DE
Novi, MI, USA
Münster, DE
Camden, SC, USA
D
Gosty´n, PL
New Delhi, IN
Herne, DE
Camden, SC, USA
Kunshan, CN
Kunshan, CN
Fujairah, AE
Joinvill e, BR
Singapor e, SG
São Paul o, BR
Nordic Air Filtration
Hengst SE, Nienkamp 55-85, 48147 Münster, Germany
DELBAG GmbH, Südstr. 48, 44625 Herne, Germany
Nordic Air Filtration A/S, Bergenvej 1, 4900 Nakskov, Denmark
info@delbag.com
www.delbag.com
sales@nordic-air-filtration.com
www.nordic-air-filtration.com