aerzen POSITIVE DISPLACEMENT
BLOWERS
for conveyance and compression of process gases
Series GR/GQ, volume flows from 100 m3/h to 100.000 m3/h
AERZEN PROCESS GAS BLOWERS.
ROBUST TECHNOLOGY FOR EVERY
PROCESS.
AERZEN process gas blowers have proven themselves in thousands of installed units all over the
world. What are the decisive factors? Extremely long service life. Sharp focus on efficiency criteria.
And also this: the unusually broad portfolio of solutions, including modifications, accessories and spe-
cial developments to ensure they meet the every possible process requirement.
Rightsized for the process. Design based on customer re- opments. But the decisive factor in reducing energy consump-
quirements as the basis for optimal energy efficiency. tion is this: every compressor and blower unit from AERZEN
AERZEN’s process gas blowers are radically flow optimised. is tailored to the individual requirements of our customers
Care-fully selected transmission variants are just as impor- and their processes. Rightsized and thus especially efficient.
tant to increasing efficiency as innovative component devel-
2
Focus on special requirements. Working method and range of application
AERZEN is a pioneer in compressor technology. In many areas Positive Displacement principle, i.e. automatic adaptation
we are the market leader. With unique technological advan- to possibly changing operating conditions.
tages. With superior quality and high efficiency. Our product • Volume flows from 100 to 50000 m3/h
portfolio for the process gas and coolant industries? A broad • Pressure difference up to 800 mbar
spectrum of specialised blowers and compressors. High-end • Insensitive to impurities in the gas, such as particles of
machines with a wide variety of designs, sizes, and special dust, tar and dirt or parts of liquid
features. Configured so they meet all relevant international • Suitable for continuous liquid injection for gas cooling or
regulations, building codes, and specifications in a wide vari- for cleaning of the conveying chamber
ety of industrial branches and certification bodies. Including • Usable for nearly all technical gases and gas mixtures in
ASME, API, TEMA, ANSI, Ex and DIN, the European Pressure all industrial ranges
Equipment Directive (PED), as well as safety regulations for • Ideal use for gases with negative intake temperature
electrical installations such as DIN, EN, NEMA, IEC und ATEX. • Optimal use at high intake temperatures up to 110 °C
• Oil-free handling (100% separation of oil chamber and
rotor chamber)
Volume flows GR Q1 (m3/h)
GRa 12.4
GRa 13.6
GRb 14.8
GRb 15.10
GRb 16.12
GRb 16.f13
GRa 17.14
0 1000 2000 3000 4000 5000 6000 7000 8000
GRa 18.16
GRa 18.17
GR 19.18
GRa 20.20
GR 21.22
0 5000 10000 20000 30000 40000 50000
3
TYPE GR OIL-FREE ROTOR CHAMBER.
THE SEAL VARIANTS.
A variety of seal systems are used to ensure that the gas side and lube oil area remain separate. These
systems are examined in detail below. Depending on the individual characteristics of the gas to be
compressed, the process gas machines can be equipped with the following seal systems.
Female rotor Cylinder
Space to accom-
modate seals
Floating
bearing
Piston ring /
Fixed oil slinger type
bearing seal
Timing- Oil thrower
gears
Oil thrower
Shaft seal ring
Cylinder
Neutral chamber roller bearing
(open to Housing cover
atmosphere)
Gear case Side plate Driving Rotor Side plate
Design features: Bearing:
In terms of the basic concept, the GR series represents an As a rule, all blower sizes are equipped with high-quality roller
extension of the standard GM blower, and its most impor- bearings that guarantee a maximal bearing service life.
tant characteristic is that the rotor chamber is designed to
be completely separate from the oil chambers. This ensures Lubrication:
that neither the lube oil in the rotor chamber nor the conveyed All GR blowers feature oil splash lubrication.
medium can penetrate into the oil chambers.
Direction of conveyance:
Timing gears: All GR blowers convey from top to bottom.
All GR blowers are equipped with helical-toothed, hardened
and ground gears. They are fastened to the shafts by means
of a taper interference fit.
4
a) b)
Suction relief line
Outlet for sealant and coolant
Seal housing
Chamber ring
Shaft sleeve
Shaft sleeve
Shaft
Chamber
ring
Shaft
Counter ring
Carbon ring
Slide ring
Leakage drain
Armoured ring
Slide ring
Intermediate disc Inlet for sealant
Counter ring
and coolant
Seal gas supply
Seal on the rotor chamber: water-locked mechanical seals, existing water in the plant is
a) Restrictive carbon ring labyrinth, dry used in almost all cases and is fed back into the plant’s water
The sealing of the conveying chamber depends first and fore- cycle after flowing through the seals. The required quantities
most on the conveyed medium and the required leak rate. of locking fluid depend on various factors, such as blower size,
For dry media free of dust and tar, restrictive carbon ring speed, compression ratios and the selected locking medium,
labyrinth seals with exhaust and seal gas admission flow are and have already been specified by us as an offer. One advan-
used, because they offer exceptionally low abrasion and allow tage of these seals is that they offer an absolutely gastight
higher speeds. closure between the rotor chamber and the atmosphere as
well as maximal permissible blower speeds.
b) Double-acting mechanical seals
These seals require a locking fluid to facilitate locking and heat
removal. Water and oil are the preferred locking media. For
5
GR SERIES. DIMENSIONS AND IN-
STALLATION VARIANTS.
Sizes 12.4 bis 21.22 - arrangement 10
Sizes 18.16 bis 21.22 - arrangement 4
Dimensions, weights and performance data are non-binding examples! * Weight approx. kg - without motor
Size DN a a1 b c ød f g h h1 p *Weight
GRa 12.4 100 360 395 450 45 845 360 180 200
GRa 13.6 150 400 452 492 55 944 436 200 300
GRb 14.8 150 500 510 608 55 1118 538 250 400
GRb 15.10 200 630 578 652 60 1230 652 315 640
GRb 16.12 250 710 620 726 70 1346 810 355 1000
GRb 16f13 300 710 734 840 70 1574 810 355 1100
GRa 17.14 300 1000 770 940 90 1710 1005 500 1800
GRa 18.16 400 1120 1400 885 930 110 1815 1240 560 840 280 3300
GRa 18.17 500 1120 1400 1080 1130 110 2210 1240 560 840 280 5100
GR 19.18 500 1420 1700 1085 1170 115 2255 1518 710 990 280 5550
GR 20.20 700 1800 2200 1350 1400 145 2750 1879 630 1030 400 9400
GR 21.22 800 2000 2400 1680 1834 180 3514 2190 1000 1400 400 11600
6
Sizes 12.4 to 17.14 in compact construction, design DA (direct drive)
Sizes 12.4 to 17.14 in compact construction, design FA (overhung drive)
* Dimensions refer to motor size ** Weight approx. kg - unit without motor
* Dimen-
Size DN a f g h P v v1 w w1 x x1 y Weight **
sions
GRa 12.4 100 180 L 1064 510 395 1300 80 1900 1700 1100 1400 605 885 1540 360
GRa 13.6 150 180 L 1185 580 452 1300 100 2000 1800 1300 1500 685 1002 1640 520
GRb 14.8 150 225 S 1305 580 510 1550 120 2300 2000 1300 1650 810 1145 1865 700
GRb 15.10 200 280 S 1642 775 578 1850 140 2700 2400 1400 1750 1010 1233 2230 1250
GRb 16.12 250 315 M 1810 865 620 2100 160 3000 2800 1700 1600 1160 1100 2550 1900
GRb 16f13 300 355 L 2032 1125 734 2280 160 3550 3000 1800 2200 1330 1684 3095 2100
GRa 17.14 300 355 L 2412 1185 770 2670 200 3640 2900 1950 2300 1467 1810 3103 3200
Dimensions, weights and performance data are non-binding examples!
7
UNAFFECTED BY THE PROCESS.
TYPE GQ SEALS.
GQ series for process gas conveyance dirt contained in the gas are trapped in the labyrinths. A flushing
The blowers of the GQ series are similar in design to the GR device connected directly to the labyrinth seals ensures that
series, but differ in that they feature horizontal handling and the trapped particles of dirt can be removed and flushed back
special oil-locked mechanical seals on the rotor chamber. into the rotor chamber. In addition, there is a connection for a
The labyrinth seals on the rotor chamber serve to protect the seal gas admission flow, so that the labyrinth can be thoroughly
subsequent mechanical seals. On the one hand, they eliminate flushed with an inert gas if it gets too dirty.
pulsations caused by compression, and on the other, particles of
Sectional drawing
Female rotor Cylinder
Oil injection
Oil injection
Floating Fixed bearing
bearing
Timing gears
Oil injection
Oil injection
Shaft seal ring
Sealing chamber
detail X Housing cover
Gear case
Side plate
Driving rotor
Sealing chamber (detail „x“)
inlet for sealant leakage return
(drawn turned)
product side
(conveying chamber)
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Working method and range of application Design characteristics
• Positive Displacement principle, i.e. automatic adaptation • Housing parts made of nodular cast iron, designed for PN
to possibly changing operating conditions. 2,5 with cast-on AERSIL-chamber for reduction of sound
• Volume flows from 15.000 to 100.000 m3/h and pulsations
• Pressure difference : • Special design with housing made of nodular cast iron,
GQ 17f14, GQ 18f16 : 1000 mbar designed for PN 6 (only GQ 20f20 xz and GQ 21.21 xz)
GQ 22.23, GQb 22.23 : 1200 mbar • Gastightly closed rotary pistons made of grey cast iron,
GQ 20f20, GQ 21.21 : 1500 mbar with stainless steel wearing ledges
• Insensitive to impurities in the gas, such as particles of • On choice rotary pistons made of wear resistant stainless
dust and dirt or parts of liquid steel
• Suitable for continuous water injection for gas cooling or • Continuous shafts manufactured of one piece
for cleaning of the conveying chamber • Fixing pistons-shafts by tangential keys
• Ideal use in steel works for compression of process-, • Horizontal direction of flow, therefore simple installation
cooling and purge gas and piping
• Frequent use as double-stage units for differential • Sufficiently dimensioned roller bearings even at extreme
pressures up to 2,4 bar load
• Hardened, ground, helically geared timing gears
• Fixing of gear wheels by conical press-on taper
• Optimal separation between conveying chamber and both
oil- and bearing chambers
• Special conveying chamber sealing by singleacting
mechanical seal with forced feed oil trap in combination
Volume flows GQ Q1 (m3/h) with labyrinth seals and oil slingers
• Flushing device prepared as standard in the sealing range
GQ 17.14
• Forced feed lubrication by separate oil supply unit
GQ 18.16
GQ 20f20
GQ 21.21
GQ 22.23
GQb 22.23
0 20000 40000 60000 80000 100000
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THE ACCESSORIES HIGHLIGHT
DECADES OF EXPERIENCE TOO.
Right-sized is the keyword here as well, because all the auxiliary equipment is modified to suit the
corresponding application and is available in a wide variety of designs. Thanks to the multitude
of components, solutions can be implemented individually and efficiently based on customer
requirements.
Accessories available:
• Base frames, base plates • Acoustic hoods
• Flexible machinery mountings, anchor bolts, anchor bars • Driving motors
• Flexible couplings • Gearboxes
• Coupling guards • Heat exchangers
• Compensators, sliding sleeves • Washers
• Starting strainers • Separators
• Injection devices • Safety relief valves
• Pipe connections • Contact instruments
• Non-return flaps • Completely wired instrument panels
• Silencers • Completely tubed oil supply units
Dimensions – Sizes 17.14 to 22.23 - arrangement 10
Weight
Type DN a b c ød e f g h i k B
approx. kg
GQ 17.14 xz 300 1000 993 805 90 640 1798 1070 567,5 920 400 167,5 1800
GQ 18.16 xz 400 1120 1042 954 110 740 1996 1380 760 1010 550 210 3500
GQ 20f20 xz 700 1800 1160 1360 160 1600 2520 2020 1300 1500 730 320 9000
GQ 21.21 xz 700 2000 1390 1600 180 1820 2920 2500 1335 1800 945 390 14000
GQ 22.23 xz 900 2400 1682,5 1914,5 240 2300 3597 3030 1580 2100 1100 479,2 27000
GQb 22.23 xz 1200 2400 1682,5 1914,5 240 2300 3597 3030 1580 2100 1100 479,2 28000
Dimensions, weights and performance data are non-binding examples!
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Cases of application of GQ 22.23 or GQb 22.23 - blowers in Double-stage compression of process gas with p1 > 1,3 bar abs
direct reduction plants p2 > 3,3 bar abs
t1 > 50 °C
1) Arrangement 1 + 1 3) Arrangement 2 + 2
GQ GQ
90.000 Nm3/h 180.000 Nm3/h
GQb GQb
110.000 Nm3/h 225.000 Nm3/h
2) Arrangement 2 + 1 4) Arrangement 3 + 2
GQ GQ
150.000 Nm3/h 270.000 Nm3/h
GQb GQb
190.000 Nm3/h 335.000 Nm3/h
Dimensions – Sizes 17.14 to 22.23 - arrangement 6
Foundation approx.
Type b c g k l m n o
Length Width
GQ 17.14 xz 993 805 1070 940 1800 2300 1272 1370 6000 2300
GQ 18.16 xz 1042 954 1380 1020 1900 2400 1465 1460 6500 2300
GQ 20f20 xz 1160 1360 2020 1200 2000 2690 2030 1840 8100 3000
GQ 21.21 xz 1390 1530 2450 1220 2200 2700 2140 1710 7900 3500
GQ 22.23 xz 1682,5 1914,5 3030 1465 2600 3000 2642 2010 9200 3800
GQb 22.23 xz 1682,5 1914,5 3030 1465 2600 3000 2642 2010 9200 3800
Dimensions, weights and performance data are non-binding examples!
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AERZEN. Compression as success principle. More than 2,000 experienced employees in over 48 affiliates
AERZEN began life in 1864 as Aerzener Maschinenfabrik. In the world over are working at full speed to advance com-
1868 we built Europe’s first rotary lobe blower. The first Turbo pressor technology. Their technological expertise, our inter-
compressors followed in 1911, the first screw compressor in national network of experts, and constant feedback from our
1943, and in 2010 the world’s first rotary lobe compressor unit. clients form the basis for our success. Products and services
Innovations “made by AERZEN” keep driving the development from AERZEN are setting standards when it comes to reliability,
of compressor technology forward. Today, AERZEN is among lasting value, and efficiency. Go ahead: challenge us!
the world’s oldest and most significant manufacturers of rotary
lobe blowers, rotary lobe compressors, rotary lobe meters, screw
compressors, and Turbo blowers. And among the undisputed
market leaders in many areas of application.
Aerzener Maschinenfabrik GmbH
Reherweg 28 – 31855 Aerzen / Germany
Telefon: +49 5154 81-0 – Fax: +49 5154 81-9191
info@aerzener.de – www.aerzen.com
G1-151 – 11 – EN – 500 – 06.2018
