Gas composition (mol%): Hydrogen gas
Flow rate: 980Nm3/h
Inlet pressure: 0.15~0.25MPa. G;
Inlet temperature: 25 ℃
Exhaust pressure: 3.3MPa. G;
Main motor power: 132kW
Overall dimensions of the machine: ~5500 × 3200 × 2400 mm
Whole machine weight: ~9T
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The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor, manufactured by Bengbu United Compressor (a leading China-based compressor manufacturer), is a high-performance solution tailored for hydrogen compression applications. Designed with advanced engineering, this compressor stands out in reliability, efficiency, and adaptability, making it ideal for diverse hydrogen energy scenarios.
Key technical specifications include: a hydrogen (100 mol%) medium, 980Nm³/h processing capacity, 0.15~0.25MPa.G inlet pressure, and 3.3MPa.G discharge pressure. Operating at an inlet temperature of 25℃, it is powered by a 132kW main motor, with overall dimensions of approximately 5500 × 3200 × 2400 mm and a total weight of 9T.
This compressor finds critical use in hydrogen power generation (fuel cell systems), energy storage (high-pressure hydrogen storage in cylinders or underground tanks), heating systems, and hydrogen fuel cell vehicles—where it compresses hydrogen to the pressure required by fuel cells, acting as a core component for vehicle operation. Its lightweight design and efficient compression technology further enhance its suitability for mobile and industrial applications.
The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor delivers exceptional efficiency, ensuring optimal hydrogen compression with minimal energy loss. Its high automation level reduces manual intervention, while robust construction guarantees strong reliability even in continuous operation. This performance makes it a top choice for high-demand hydrogen energy projects.
Engineered with fewer vulnerable parts, the compressor minimizes downtime and repair costs. It operates with low vibration and noise, creating a safer and more comfortable working environment. The user-friendly design simplifies daily operation and maintenance, making it accessible for technical teams with basic training.
All main and auxiliary equipment of the compressor are integrated into a skid-mounted system, ensuring stable and reliable operation. This skid-mounted design streamlines transportation and on-site installation, reducing setup time and logistical challenges—ideal for projects with tight timelines.
Backed by four proprietary technologies, the compressor meets stringent quality standards. Key patents include:
· Piston rod thread protective sleeve (ZL 2017 2 1907021.7)
· Piston ring support device (ZL 2018 2 0294776.2)
· Symmetrical balanced compressor range piston (ZL 2017 2 190177.0)
· Integrated long-short double compartment (ZL 2018 2 0294762.0)
Highlight Advantages
 |  |  |  |
| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
Patent Certificates
 | A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
Whole Machine Description
The compressor adopts D-type (symmetrical balance type), water-cooled, oil-free lubrication, reciprocating piston type, 2-row 3-stage compression, and the entire unit is supplied in a modular manner.
The compressor crankcase is made of gray cast iron and has four holes of different diameters for installing crosshead slides, bearings, and bearing seats. The lower part of the crankcase can store lubricating oil for the compressor to lubricate; The upper surface of the crankcase has an interface for installing a fuel inlet (breathing port) cover plate; In addition, the crankcase also has spare interfaces such as oil drain port, oil gauge observation port, bearing seat oil injection port, and installation oil temperature measurement port. The oil drain port of the crankcase has been connected to the outside of the compartment and is equipped with a manual ball valve for oil discharge from the crankcase.
The middle body of the compressor is a double middle body structure, ensuring that the middle body space is greater than one stroke, preventing compressor oil from entering the cylinder from the crankcase, thus ensuring that compressor oil does not contaminate the medium. The material of the compressor cylinder is gray cast iron/forged steel, and it adopts an oil-free lubrication design, which does not require oil lubrication. The cylinder head material is gray cast iron/forged steel, and the air valves are arranged axially on the cylinder head.
 |  |
The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
 |  |  |
| Metal cabin | Wooden box | Soundproof cabin |
Project Case
 |  |  |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Exhaust pressure (MPa.G) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) | |
| 1 | DW-1.6/(8～12)-120 | Hydrogen | 800 | 12 | 160 | Water-cooled | 5800×3000×2300 | 8500 | |
| 2 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 3 | DW-6.74(3.3)/0.7(5～12)-12 | Hydrogen | 600 | 1.2 | 90 | Water-cooled | 5000×3200×2100 | 8000 | |
| 4 | DW-17.9/(4～5)-6.5 | Hydrogen | 1270 | 0.65 | 132 | Water-cooled | 3500×3000×2300 | 8000 | |
| 5 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 6 | DW-9.55/0.03-16 | Hydrogen | 515 | 1.6 | 90 | Water-cooled | 3500×3200×2500 | 6500 | |
| 7 | DW-96.5/（ 15～23 ）-（ 21~ 29） | Hydrogen | 4500 | 2. 1～2.9 | 185 | Water-cooled | 5000×3000×2500 | 12000 | |
| 8 | DW-48/（ 15～23 ）-（ 21~29） | Hydrogen | 2642～4500 | 2. 1～2.9 | 55 | Water-cooled | 4000×2700×2300 | 6000 | |
| 9 | D-0.57/16-200 | Hydrogen | 500 | 20 | 75 | Water-cooled | 5800×3200×2350 | 9000 | |
| 10 | ZW-0. 18/15-22 | Hydrogen | 150 | 2.2 | 11 | Water-cooled | 2200×1600×1700 | 2000 | |
| 11 | ZW-0.82/(6～8)-20 | Hydrogen | 300 | 2.0 | 22 | Water-cooled | 2500×1500×1750 | 2000 | |
| 12 | W-3/0.1-150 | Hydrogen | 212 | 15 | 55 | Water-cooled | 6000×2700×2100 | 15000 | |
| 13 | MW-7.7/9.8-40 | Hydrogen | 4200 | 4.0 | 355 | Water-cooled | 7500×3600×2000 | 22000 | |
| 14 | MW-25.2/（1.5～1.7）-10 | Hydrogen | 3300 | 1.0 | 315 | Water-cooled | 8000×3000×2200 | 20000 | |
| 15 | PW-0.6/(10～15)-30 | Hydrogen | 0~560 | 3.0 | 30 | Mixed cooling | 2200×1800×1600 | 1800 | |
| 16 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 17 | D-0.26/（28～31）-150 | Hydrogen | 400 | 15 | 45 | Mixed cooling | 3800×3200×1950 | 4800 | |
| 18 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 19 | VW-14.3/7 | Hydrogen | 750 | 0.7 | 110 | Mixed cooling | 4800×2250×2100 | 8000 | |
| 20 | DW-7.6/（4～5.7）-6.5 | Hydrogen | 2000 | 0.65 | 55 | Mixed cooling | 3500×3000×2300 | 6000 | |
Project Case
 |  |  |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project |
The compressor adopts a D-type (symmetrical balance) structure, featuring water cooling, oil-free lubrication, and a reciprocating piston design with 2 rows and 3 stages of compression. It is supplied as a modular unit for easy integration. Critical components like the crankcase (gray cast iron) and cylinder (gray cast iron/forged steel) are engineered to prevent oil contamination of hydrogen, ensuring medium purity.
Yes. Bengbu United Compressor offers tailored solutions based on customer requirements, including flow rate, purity, pressure, operating environment, and intended use. Customizable options cover structural forms (D/M/S/W/V/Z-type), cooling methods (water/air/mixed cooling), installation types (fixed/mobile/skid-mounted/cabin-type), and drive modes (motor/diesel engine).
The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor uses water cooling as standard, ensuring efficient heat dissipation during high-pressure operation. For special environments, mixed cooling (water + air) can be customized to meet unique temperature control needs.
The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor, manufactured by Bengbu United Compressor (a leading China-based compressor manufacturer), is a high-performance solution tailored for hydrogen compression applications. Designed with advanced engineering, this compressor stands out in reliability, efficiency, and adaptability, making it ideal for diverse hydrogen energy scenarios.
Key technical specifications include: a hydrogen (100 mol%) medium, 980Nm³/h processing capacity, 0.15~0.25MPa.G inlet pressure, and 3.3MPa.G discharge pressure. Operating at an inlet temperature of 25℃, it is powered by a 132kW main motor, with overall dimensions of approximately 5500 × 3200 × 2400 mm and a total weight of 9T.
This compressor finds critical use in hydrogen power generation (fuel cell systems), energy storage (high-pressure hydrogen storage in cylinders or underground tanks), heating systems, and hydrogen fuel cell vehicles—where it compresses hydrogen to the pressure required by fuel cells, acting as a core component for vehicle operation. Its lightweight design and efficient compression technology further enhance its suitability for mobile and industrial applications.
The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor delivers exceptional efficiency, ensuring optimal hydrogen compression with minimal energy loss. Its high automation level reduces manual intervention, while robust construction guarantees strong reliability even in continuous operation. This performance makes it a top choice for high-demand hydrogen energy projects.
Engineered with fewer vulnerable parts, the compressor minimizes downtime and repair costs. It operates with low vibration and noise, creating a safer and more comfortable working environment. The user-friendly design simplifies daily operation and maintenance, making it accessible for technical teams with basic training.
All main and auxiliary equipment of the compressor are integrated into a skid-mounted system, ensuring stable and reliable operation. This skid-mounted design streamlines transportation and on-site installation, reducing setup time and logistical challenges—ideal for projects with tight timelines.
Backed by four proprietary technologies, the compressor meets stringent quality standards. Key patents include:
· Piston rod thread protective sleeve (ZL 2017 2 1907021.7)
· Piston ring support device (ZL 2018 2 0294776.2)
· Symmetrical balanced compressor range piston (ZL 2017 2 190177.0)
· Integrated long-short double compartment (ZL 2018 2 0294762.0)
Highlight Advantages
| | | |
| Has high efficiency, strong reliability, and high degree of automation; | Less vulnerable parts, low vibration, low noise, and easy operation and maintenance | The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor | The entire machine components are carefully designed |
Patent Certificates
| A piston rod thread protective sleeve ZL 2017 2 1907021.7 | | A piston ring support device ZL 2018 2 0294776.2 | |
| A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors | | Integrated long short double compartment ZL 2018 2 0294762.0 |
Whole Machine Description
The compressor adopts D-type (symmetrical balance type), water-cooled, oil-free lubrication, reciprocating piston type, 2-row 3-stage compression, and the entire unit is supplied in a modular manner.
The compressor crankcase is made of gray cast iron and has four holes of different diameters for installing crosshead slides, bearings, and bearing seats. The lower part of the crankcase can store lubricating oil for the compressor to lubricate; The upper surface of the crankcase has an interface for installing a fuel inlet (breathing port) cover plate; In addition, the crankcase also has spare interfaces such as oil drain port, oil gauge observation port, bearing seat oil injection port, and installation oil temperature measurement port. The oil drain port of the crankcase has been connected to the outside of the compartment and is equipped with a manual ball valve for oil discharge from the crankcase.
The middle body of the compressor is a double middle body structure, ensuring that the middle body space is greater than one stroke, preventing compressor oil from entering the cylinder from the crankcase, thus ensuring that compressor oil does not contaminate the medium. The material of the compressor cylinder is gray cast iron/forged steel, and it adopts an oil-free lubrication design, which does not require oil lubrication. The cylinder head material is gray cast iron/forged steel, and the air valves are arranged axially on the cylinder head.
| |
The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.
Structural form: D-type/M-type/S-type/W-type/V-type/Z-type
Cooling method: water cooling/air cooling/mixed cooling
Installation form: fixed/mobile/pry mounted/cabin type
Drive mode: motor drive/diesel engine start
Transportation: sea/air/land
Packaging:
| | |
| Metal cabin | Wooden box | Soundproof cabin |
Project Case
| | |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Alibek oilfield in Southern Kazakhstan | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field |
Technical Parameter
| No. | Model | Medium | Flow rate (Nm3/h) | Exhaust pressure (MPa.G) | Motor power (kW) | Cooling method | Overall dimensions (mm) | Weights (kg) | |
| 1 | DW-1.6/(8～12)-120 | Hydrogen | 800 | 12 | 160 | Water-cooled | 5800×3000×2300 | 8500 | |
| 2 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 3 | DW-6.74(3.3)/0.7(5～12)-12 | Hydrogen | 600 | 1.2 | 90 | Water-cooled | 5000×3200×2100 | 8000 | |
| 4 | DW-17.9/(4～5)-6.5 | Hydrogen | 1270 | 0.65 | 132 | Water-cooled | 3500×3000×2300 | 8000 | |
| 5 | DW-1.8/15-30 | Hydrogen | 1500 | 3.0 | 75 | Water-cooled | 3200×3000×1850 | 5800 | |
| 6 | DW-9.55/0.03-16 | Hydrogen | 515 | 1.6 | 90 | Water-cooled | 3500×3200×2500 | 6500 | |
| 7 | DW-96.5/（ 15～23 ）-（ 21~29） | Hydrogen | 4500 | 2. 1～2.9 | 185 | Water-cooled | 5000×3000×2500 | 12000 | |
| 8 | DW-48/（ 15～23 ）-（ 21~29） | Hydrogen | 2642～4500 | 2. 1～2.9 | 55 | Water-cooled | 4000×2700×2300 | 6000 | |
| 9 | D-0.57/16-200 | Hydrogen | 500 | 20 | 75 | Water-cooled | 5800×3200×2350 | 9000 | |
| 10 | ZW-0. 18/15-22 | Hydrogen | 150 | 2.2 | 11 | Water-cooled | 2200×1600×1700 | 2000 | |
| 11 | ZW-0.82/(6～8)-20 | Hydrogen | 300 | 2.0 | 22 | Water-cooled | 2500×1500×1750 | 2000 | |
| 12 | W-3/0.1-150 | Hydrogen | 212 | 15 | 55 | Water-cooled | 6000×2700×2100 | 15000 | |
| 13 | MW-7.7/9.8-40 | Hydrogen | 4200 | 4.0 | 355 | Water-cooled | 7500×3600×2000 | 22000 | |
| 14 | MW-25.2/（1.5～1.7）-10 | Hydrogen | 3300 | 1.0 | 315 | Water-cooled | 8000×3000×2200 | 20000 | |
| 15 | PW-0.6/(10～15)-30 | Hydrogen | 0~560 | 3.0 | 30 | Mixed cooling | 2200×1800×1600 | 1800 | |
| 16 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 17 | D-0.26/（28～31）-150 | Hydrogen | 400 | 15 | 45 | Mixed cooling | 3800×3200×1950 | 4800 | |
| 18 | PW-13.7/17-25 | Hydrogen | 820 | 2.5 | 30 | Mixed cooling | 4000×2700×2300 | 6000 | |
| 19 | VW-14.3/7 | Hydrogen | 750 | 0.7 | 110 | Mixed cooling | 4800×2250×2100 | 8000 | |
| 20 | DW-7.6/（4～5.7）-6.5 | Hydrogen | 2000 | 0.65 | 55 | Mixed cooling | 3500×3000×2300 | 6000 | |
Project Case
| | |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project |
The compressor adopts a D-type (symmetrical balance) structure, featuring water cooling, oil-free lubrication, and a reciprocating piston design with 2 rows and 3 stages of compression. It is supplied as a modular unit for easy integration. Critical components like the crankcase (gray cast iron) and cylinder (gray cast iron/forged steel) are engineered to prevent oil contamination of hydrogen, ensuring medium purity.
Yes. Bengbu United Compressor offers tailored solutions based on customer requirements, including flow rate, purity, pressure, operating environment, and intended use. Customizable options cover structural forms (D/M/S/W/V/Z-type), cooling methods (water/air/mixed cooling), installation types (fixed/mobile/skid-mounted/cabin-type), and drive modes (motor/diesel engine).
The DW-6.8 (1.5-2.5) -33 Hydrogen Compressor uses water cooling as standard, ensuring efficient heat dissipation during high-pressure operation. For special environments, mixed cooling (water + air) can be customized to meet unique temperature control needs.
