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The DW-6.4 / 0.4-19.9 Raw Gas Compressor is a high-performance industrial equipment engineered by Bengbu United Compressor, designed to handle complex gas mixtures with precision. Ideal for processing gases including helium (34.61%), methane (0.90%), hydrogen (8.30%), nitrogen (56.20%), and trace neon, this compressor delivers reliable performance across diverse industrial applications.
With a processing capacity of 380Nm³/h (measured at 0℃, 0.101325MPa.A), it operates efficiently under specific inlet conditions: inlet pressure of 0.04MPa.G and inlet temperature of 50℃. It achieves an exhaust pressure of 1.99MPa.G while ensuring the terminal air supply temperature remains ≤50℃ after cooling, making it suitable for temperature-sensitive processes.
Powered by a 90kW main motor, the compressor balances power and energy efficiency. Its compact design—overall dimensions of approximately 5500 × 3200 × 2000mm—and total weight of around 10T allow for flexible installation in various industrial settings, from chemical plants to new energy facilities.
The DW-6.4 / 0.4-19.9 Raw Gas Compressor stands out for its superior efficiency, robust reliability, and high automation. Its precision-engineered components minimize energy loss, ensuring consistent operation even under fluctuating gas composition or pressure. The low-vibration design reduces noise levels, creating a safer working environment, while a reduced number of vulnerable parts lowers the risk of downtime—critical for continuous industrial processes.
Built as a D-type (symmetrical balanced), water-cooled, oil-free lubrication reciprocating piston compressor, it features 2-row, 3-stage compression for optimal gas handling. Key structural advantages include:
· A double middle body structure that prevents crankcase oil from contaminating the gas medium, ensuring purity—essential for sensitive applications like laboratory gas supply.
· Cylinders and cylinder heads made from gray cast iron or forged steel, designed for oil-free lubrication to eliminate medium contamination.
· Axially arranged air valves on cylinder heads, enhancing gas flow efficiency and simplifying maintenance access.
The compressor is supplied as a modular unit, with main and auxiliary equipment integrated into a skid-mounted design. This allows for easy transportation (by sea, air, or land) and quick on-site installation—saving time and labor costs. For unique operational needs, customization is available, including:
· Structural forms: D-type, M-type, S-type, W-type, V-type, or Z-type.
· Cooling methods: Water-cooled, air-cooled, or mixed cooling.
· Installation types: Fixed, mobile, skid-mounted, or cabin-type.
· Drive modes: Motor-driven or diesel engine-driven.
Application Area
The raw material gas compressor is suitable for:
Natural gas processing: pressurized and transported to the gas pipeline network
Chemical raw material pressurization: transportation of industrial raw materials such as hydrogen/nitrogen/helium
New energy supporting system: hydrogen fuel cell gas supply system
Laboratory gas supply: precise supply of high-purity gas
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 |
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 | |
| 11 | DW-14/(0～0.2)-25 | Raw material gas | 800 | 2.5 | 160 | Water-cooled | 4800×3200×1915 | 10000 | |
| 12 | VW-8/18 | Vinylidene fluoride | 418 | 1.8 | 75 | Water-cooled | 3700×2000×1700 | 4500 | |
| 13 | VWD-3.2/(0～0.2)-40 | Biogas | 230 | 4.0 | 45 | Water-cooled | 6000×2500×2650 | 8000 | |
| 14 | VW-9/6 | Ethyl chloride | 470 | 0.6 | 55 | Water-cooled | 2800×1720×1700 | 3500 | |
| 15 | DW-2.4/(18～25)-50 | Raw material gas | 2900 | 5.0 | 160 | Water-cooled | 4300×3000×1540 | 4500 | |
| 16 | VW-5.6/（0～6）-6 | Isobutylene | 1650 | 0.6 | 45 | Water-cooled | 2900×1900×1600 | 3500 | |
| 17 | VW-3.8/3.5 | Mixed gases | 200 | 0.35 | 18.5 | Water-cooled | 2200×1945×1600 | 2000 | |
| 18 | ZW-1.7/3.5 | Vinyl chloride | 100 | 0.35 | 15 | Water-cooled | 2700×1600×2068 | 2000 | |
| 19 | VW-0.85/(0～14)-40 | Refrigerant | 300 | 4.0 | 55 | Water-cooled | 4500×2300×1780 | 5500 | |
| 20 | DW-3.78/(8～13)-(16～24) | Ammonia | 2700 | 1.6～2.4 | 75 | Water-cooled | 3200×2000×1700 | 3500 | |
| 21 | DW-5/7 | Chloromethane | 355 | 0.7 | 37 | Water-cooled | 3500×2600×1700 | 4000 | |
| 22 | DW-9.2/3 | on-condensable gas | 653 | 0.3 | 45 | Water-cooled | 3500×3200×1680 | 6800 | |
| 23 | DW- 16/(2.8～3.2)-7.6 | Carbon rich gas | 3000～3400 | 0.76 | 132 | Water-cooled | 4500×3400×2750 | 12000 | |
| 24 | DWD-2.9/20-50 | Wellhead gas | 3334 | 2.0～5.0 | 185 | Water-cooled | 6000×3500×3000 | 14000 | |
| 25 | DW-4/0.5-4 | -pentadiene, nitroge | 300 | 0.4 | 30 | Water-cooled | 3000×2800×1700 | 3500 | |
| 26 | DW-8.7/0.02-15 | Tail gas | 500 | 1.5 | 90 | Water-cooled | 4500×3000×1800 | 10000 | |
| 27 | DW-8.8/0.2-6 | Desorption gas | 450 | 0.6 | 75 | Water-cooled | 4000×3000×2150 | 8000 | |
| 28 | DW-1.3/0.2-18 | Metafluoroethylene | 80 | 1.8 | 18.5 | Water-cooled | 3500×2500×1570 | 3500 | |
| 29 | DW-12.5/(0. 1～0. 15)-18 | uoromonochloroeth | 887 | 1.8 | 132 | Water-cooled | 5500×3200×2500 | 14000 | |
| 30 | DW-2.9/5 | Gas | 206 | 0.5 | 22 | Water-cooled | 3200×2800×1800 | 3000 | |
Project Case
 |  |  |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project |
Core parameters include a processing capacity of 380Nm³/h, inlet pressure of 0.04MPa.G, inlet temperature of 50℃, exhaust pressure of 1.99MPa.G, and a main motor power of 90kW. The terminal air supply temperature is ≤50℃ after cooling, ensuring compatibility with downstream equipment.
Yes. Its robust construction—including weather-resistant materials and flexible cooling options—allows it to operate in diverse environments, from industrial workshops to remote energy sites. Custom cabin-type installations further protect it from extreme temperatures, dust, or moisture.
The design prioritizes simplified maintenance: vulnerable parts are minimized, and critical components (like air valves) are easily accessible. The skid-mounted structure centralizes all service points, reducing downtime for inspections or repairs.
Yes. The compressor incorporates patented technologies, including a piston rod thread protective sleeve (ZL 2017 2 1907021.7) and a piston ring support device (ZL 2018 2 0294776.2), ensuring compliance with industry standards for safety and performance.
The DW-6.4 / 0.4-19.9 Raw Gas Compressor combines cutting-edge engineering with flexibility, making it a top choice for natural gas processing, chemical raw material pressurization, hydrogen fuel cell systems, and laboratory gas supply. Contact us to explore customized solutions tailored to your operational needs.
The DW-6.4 / 0.4-19.9 Raw Gas Compressor is a high-performance industrial equipment engineered by Bengbu United Compressor, designed to handle complex gas mixtures with precision. Ideal for processing gases including helium (34.61%), methane (0.90%), hydrogen (8.30%), nitrogen (56.20%), and trace neon, this compressor delivers reliable performance across diverse industrial applications.
With a processing capacity of 380Nm³/h (measured at 0℃, 0.101325MPa.A), it operates efficiently under specific inlet conditions: inlet pressure of 0.04MPa.G and inlet temperature of 50℃. It achieves an exhaust pressure of 1.99MPa.G while ensuring the terminal air supply temperature remains ≤50℃ after cooling, making it suitable for temperature-sensitive processes.
Powered by a 90kW main motor, the compressor balances power and energy efficiency. Its compact design—overall dimensions of approximately 5500 × 3200 × 2000mm—and total weight of around 10T allow for flexible installation in various industrial settings, from chemical plants to new energy facilities.
The DW-6.4 / 0.4-19.9 Raw Gas Compressor stands out for its superior efficiency, robust reliability, and high automation. Its precision-engineered components minimize energy loss, ensuring consistent operation even under fluctuating gas composition or pressure. The low-vibration design reduces noise levels, creating a safer working environment, while a reduced number of vulnerable parts lowers the risk of downtime—critical for continuous industrial processes.
Built as a D-type (symmetrical balanced), water-cooled, oil-free lubrication reciprocating piston compressor, it features 2-row, 3-stage compression for optimal gas handling. Key structural advantages include:
· A double middle body structure that prevents crankcase oil from contaminating the gas medium, ensuring purity—essential for sensitive applications like laboratory gas supply.
· Cylinders and cylinder heads made from gray cast iron or forged steel, designed for oil-free lubrication to eliminate medium contamination.
· Axially arranged air valves on cylinder heads, enhancing gas flow efficiency and simplifying maintenance access.
The compressor is supplied as a modular unit, with main and auxiliary equipment integrated into a skid-mounted design. This allows for easy transportation (by sea, air, or land) and quick on-site installation—saving time and labor costs. For unique operational needs, customization is available, including:
· Structural forms: D-type, M-type, S-type, W-type, V-type, or Z-type.
· Cooling methods: Water-cooled, air-cooled, or mixed cooling.
· Installation types: Fixed, mobile, skid-mounted, or cabin-type.
· Drive modes: Motor-driven or diesel engine-driven.
Application Area
The raw material gas compressor is suitable for:
Natural gas processing: pressurized and transported to the gas pipeline network
Chemical raw material pressurization: transportation of industrial raw materials such as hydrogen/nitrogen/helium
New energy supporting system: hydrogen fuel cell gas supply system
Laboratory gas supply: precise supply of high-purity gas
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 |
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 | |
| 11 | DW-14/(0～0.2)-25 | Raw material gas | 800 | 2.5 | 160 | Water-cooled | 4800×3200×1915 | 10000 | |
| 12 | VW-8/18 | Vinylidene fluoride | 418 | 1.8 | 75 | Water-cooled | 3700×2000×1700 | 4500 | |
| 13 | VWD-3.2/(0～0.2)-40 | Biogas | 230 | 4.0 | 45 | Water-cooled | 6000×2500×2650 | 8000 | |
| 14 | VW-9/6 | Ethyl chloride | 470 | 0.6 | 55 | Water-cooled | 2800×1720×1700 | 3500 | |
| 15 | DW-2.4/(18～25)-50 | Raw material gas | 2900 | 5.0 | 160 | Water-cooled | 4300×3000×1540 | 4500 | |
| 16 | VW-5.6/（0～6）-6 | Isobutylene | 1650 | 0.6 | 45 | Water-cooled | 2900×1900×1600 | 3500 | |
| 17 | VW-3.8/3.5 | Mixed gases | 200 | 0.35 | 18.5 | Water-cooled | 2200×1945×1600 | 2000 | |
| 18 | ZW-1.7/3.5 | Vinyl chloride | 100 | 0.35 | 15 | Water-cooled | 2700×1600×2068 | 2000 | |
| 19 | VW-0.85/(0～14)-40 | Refrigerant | 300 | 4.0 | 55 | Water-cooled | 4500×2300×1780 | 5500 | |
| 20 | DW-3.78/(8～13)-(16～24) | Ammonia | 2700 | 1.6～2.4 | 75 | Water-cooled | 3200×2000×1700 | 3500 | |
| 21 | DW-5/7 | Chloromethane | 355 | 0.7 | 37 | Water-cooled | 3500×2600×1700 | 4000 | |
| 22 | DW-9.2/3 | on-condensable gas | 653 | 0.3 | 45 | Water-cooled | 3500×3200×1680 | 6800 | |
| 23 | DW- 16/(2.8～3.2)-7.6 | Carbon rich gas | 3000～3400 | 0.76 | 132 | Water-cooled | 4500×3400×2750 | 12000 | |
| 24 | DWD-2.9/20-50 | Wellhead gas | 3334 | 2.0～5.0 | 185 | Water-cooled | 6000×3500×3000 | 14000 | |
| 25 | DW-4/0.5-4 | -pentadiene, nitroge | 300 | 0.4 | 30 | Water-cooled | 3000×2800×1700 | 3500 | |
| 26 | DW-8.7/0.02-15 | Tail gas | 500 | 1.5 | 90 | Water-cooled | 4500×3000×1800 | 10000 | |
| 27 | DW-8.8/0.2-6 | Desorption gas | 450 | 0.6 | 75 | Water-cooled | 4000×3000×2150 | 8000 | |
| 28 | DW-1.3/0.2-18 | Metafluoroethylene | 80 | 1.8 | 18.5 | Water-cooled | 3500×2500×1570 | 3500 | |
| 29 | DW-12.5/(0. 1～0. 15)-18 | uoromonochloroeth | 887 | 1.8 | 132 | Water-cooled | 5500×3200×2500 | 14000 | |
| 30 | DW-2.9/5 | Gas | 206 | 0.5 | 22 | Water-cooled | 3200×2800×1800 | 3000 | |
Project Case
| | |
| Lanzhou petrochemical company 240000 tonsyear ethylene production capacity restoration - adding butadiene and 1-butene unloading facilities project | Procurement of Molecular Sieve Dehydration, Ethylene Glycol Regeneration and Injection Device, and Fuel Gas Skid in Akimom Gas Field | Beijing Hongke Qingneng Technology Co., Ltd. associated gas compressor for Shanxi Yan'an 60000 m3 project |
Core parameters include a processing capacity of 380Nm³/h, inlet pressure of 0.04MPa.G, inlet temperature of 50℃, exhaust pressure of 1.99MPa.G, and a main motor power of 90kW. The terminal air supply temperature is ≤50℃ after cooling, ensuring compatibility with downstream equipment.
Yes. Its robust construction—including weather-resistant materials and flexible cooling options—allows it to operate in diverse environments, from industrial workshops to remote energy sites. Custom cabin-type installations further protect it from extreme temperatures, dust, or moisture.
The design prioritizes simplified maintenance: vulnerable parts are minimized, and critical components (like air valves) are easily accessible. The skid-mounted structure centralizes all service points, reducing downtime for inspections or repairs.
Yes. The compressor incorporates patented technologies, including a piston rod thread protective sleeve (ZL 2017 2 1907021.7) and a piston ring support device (ZL 2018 2 0294776.2), ensuring compliance with industry standards for safety and performance.
The DW-6.4 / 0.4-19.9 Raw Gas Compressor combines cutting-edge engineering with flexibility, making it a top choice for natural gas processing, chemical raw material pressurization, hydrogen fuel cell systems, and laboratory gas supply. Contact us to explore customized solutions tailored to your operational needs.
