Gas composition (mol%): Flash gas (CH ₄ 45-49%, C ₂ - C ₁₀ hydrocarbons, CO ₂ 0.4-0.5%)
Flow rate: 420Nm ³/h @ 0.02MPa. G
Inlet pressure: 0.02~0.05MPa. G (design point 0.02MPa)
Inlet temperature: normal temperature
Exhaust pressure: 5.5MPa. G
Main motor power: 132kW
Overall dimensions of the machine: approximately 6800 × 3400 × 2750mm
Whole machine weight: approximately 14T
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The DWFD-6.7/(0.2-0.5)-55 Special Gas Compressor is designed for recovering low-pressure flash gas and associated gas generated during oil and gas production processes.
By compressing and recycling these previously wasted gases, the compressor helps improve resource utilization, reduce flare emissions and support cleaner energy operations.
Low-Pressure Gas Recovery Capability
Designed to handle unstable low-pressure gas sources from oilfields and LNG facilities, ensuring effective recovery and utilization.
Mixed Gas Adaptability
Suitable for process gases containing hydrocarbons and other components, providing reliable compression performance under variable gas conditions.
Continuous Recovery Operation
Built for long-term operation in gas gathering and recovery systems, helping reduce gas losses and improve project efficiency.
Application Area
The DWFD-6.7/(0.2-0.5)-55 Special Gas Compressor is mainly used in:
• Flash gas recovery systems
• Oilfield associated gas utilization
• LNG process gas recovery
• Gas gathering stations
• Flare gas reduction projects
Highlight Advantages
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Efficient recovery of low-pressure flash gas and associated gas to reduce resource loss. | Stable compression performance under variable gas conditions. | Skid-mounted design simplifies installation and field deployment. | Reliable operation for continuous gas recovery applications. |
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 DWFD-6.7/(0.2-0.5)-55 Special Gas Compressor is developed for the recovery and utilization of low-pressure process gases in oil and gas facilities.
Its D-type reciprocating structure and oil-free compression design provide reliable performance when handling flash gas and associated gas with changing operating conditions.
The complete skid-mounted package integrates compression and supporting systems, allowing faster deployment in gas recovery projects.
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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 |
Project Case
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| 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 | DWF-12.4/（9～12）-14 | Carbon dioxide | 6400 | 1.4 | 185 | Air-cooled | 6000×2700×2200 | 10000 | |
| 2 | VWF-2.86/5-16 | Nitrogen | 895 | 1.6 | 55 | Air-cooled | 3200×2200×1750 | 3500 | |
| 3 | ZWF-0.96/5 | Hydrogen chloride | 55 | 0.5 | 11 | Air-cooled | 2000×1500×2000 | 1000 | |
| 4 | DFW-1. 13/0.3-34 | Flash Vapour | 75 | 0.03～3.4 | 18.5 | Air-cooled | 4500×3200×2150 | 5600 | |
| 5 | DFW-6.5/(0～0.5)-10 | Associated gas | 50～100 | 1 | 75 | Air-cooled | 3500×2800×1850 | 4500 | |
| 6 | DFW-4.2/(0.2～1.5)-12 | BOG | 260～540 | 1.2 | 55 | Air-cooled | 3500×3000×2000 | 5500 | |
| 7 | DW-2.45/(6～7)-100 | Carbon Monoxide | 900 | 10 | 160 | Mixed cooling | 6500×3200×1700 | 10000 | |
| 8 | DW-19.8/0.5-7.25 | Methylene chloride | 3.5 | 0.725 | 160 | Mixed cooling | 5200×3000×2350 | 8000 | |
| 9 | DW-8.6/(0～0.2)-8 | Chloromethane | 436 | 0.8 | 75 | Mixed cooling | 3200×2400×1600 | 4500 | |
| 10 | DW-2.4/2.5-11 H | elium Recovery Ga | 450 | 1.1 | 37 | Mixed cooling | 3000×2500×1800 | 3000 | |
Project Case
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| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
It is designed for flash gas, associated gas, and other special gas applications in oil and gas fields, LNG plants, and gas recovery projects.
Can the compressor be customized for different projects?
Yes. Bengbu United Compressor provides customized solutions based on gas conditions, operating requirements, installation methods, and control needs.
What are the main benefits of this compressor?
It helps improve gas recovery efficiency, reduce gas flaring, and provide reliable compression performance for industrial applications.
