Gas composition(mol%): Hydrogen gas
Condition 1:
Flow rate: 600Nm ³/h;
Inlet pressure: 0.07MPa. G;
Inlet temperature: ≤ 40 ℃;
Exhaust pressure: 1.2MPa. G;
Condition 2:
Flow rate: 1000~2500Nm ³/h;
Inlet pressure: 0.5~1.2MPa. G;
Inlet temperature: ≤ 40 ℃;
Exhaust pressure: 1.2MPa. G;
Main motor power: 90kW
Overall dimensions of the machine: ~5000 × 3200 × 2100 mm
Whole machine weight: ~8T
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DW6.74 (3.3)/0.7 (5-12)-12 hydrogen compressor is a D-type balanced two-row three-stage reciprocating unit from Bengbu United Compressor, adopting water-cooled oil-free structure for high-purity hydrogen compression.
Two working conditions:
1.600 Nm³/h, intake 0.07 MPa.G, discharge 1.2 MPa.G, inlet temperature ≤40℃
2.1000–2500 Nm³/h, intake 0.5–1.2 MPa.G, discharge 1.2 MPa.G, inlet temperature ≤40℃
Oil-free D-type balanced construction prevents hydrogen contamination, lowers vibration and noise to sustain stable operation for semiconductor processes.
Reduced consumable parts, multi-functional cast iron crankcase ports simplify routine inspection work.
Complete unit pre-mounted on skid to cut transport and installation time costs.
Widely used in hydrogen energy storage stations, distributed power systems, semiconductor and optical fiber manufacturing to deliver pure hydrogen.
Application Area
Deliver high-purity hydrogen for two core sectors:
1. Hydrogen energy storage: Fit large energy storage power stations and distributed power systems with stable high-pressure compression performance.
2. Precision manufacturing: Supply clean hydrogen for semiconductor and optical fiber production to guarantee consistent product quality.
Highlight Advantages
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| Energy-efficient compression with full automatic control to sustain stable long-time operation | Optimized layout reduces wearing parts, featuring low vibration and quiet running for easy daily upkeep | Full skid integrated unit ensures smooth operation and greatly shortens field installation time | All parts adopt precision structural optimization to extend the whole machine service life |
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
This D-type symmetrical balance reciprocating piston compressor adopts water-cooled oil-free design with two-row three-stage compression and modular delivery.Gray cast iron crankcase comes with multiple reserved ports and an external manual drain ball valve for convenient oil change.Dual mid-body structure isolates lubricant from cylinders to avoid medium contamination. Cast iron or forged steel cylinders and cylinder heads are fitted with axially arranged air valves for oil-free compression.
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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:
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| Metal cabin | Wooden box | Soundproof cabin |
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 | |
Project Case
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| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Ukraine Project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
Crankcase and cylinders are built from gray cast iron or forged steel to withstand high pressure; matched oil-free components keep hydrogen free from oil pollution.
Supports sea, land and air logistics. Metal, wooden and silencing cabinet packaging can be selected to secure long-distance shipment.
Oil-free structure delivers pure hydrogen for semiconductor manufacturing and lowers routine maintenance work. We provide installation guidance, training and full spare parts supply via phone, email and WhatsApp.
DW6.74 (3.3)/0.7 (5-12)-12 hydrogen compressor features stable performance and strong adaptability, a reliable compression solution for high-purity hydrogen production industries. Contact us for customized solutions.
