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The DW series wellhead and process gas compressors are heavy-duty reciprocating compressors engineered for oil & gas fields and chemical process industries.
They are widely used for wellhead gas compression, associated gas recovery, and various process gas boosting applications, where gas composition, pressure fluctuation, and operating conditions are highly demanding.
Each compressor is custom-designed according to gas composition, inlet pressure, discharge pressure, flow rate, and site conditions, ensuring safe, stable, and long-term operation.
Process Gas Compressor Applications
Wellhead Gas Compression
Associated Gas Compressor Systems
Feed Gas and Synthesis Gas Compression
Tail Gas and Flash Gas Recovery
Regeneration Gas and Non-Condensable Gas Handling
Helium Recovery and Rich Carbon Gas Compression
Heavy-duty reciprocating piston compressor design
Stable operation under variable pressure and flow conditions
High efficiency with low energy consumption
Corrosion-resistant materials for sulfur-containing and mixed gases
Optimized sealing design for toxic and flammable media
Suitable for associated gas, cracked gas, and synthesis gas
Structure & Configuration
The compressor adopts a D-type (symmetrical balanced) structure with multi-stage compression.
Key design highlights include:
Oil-free or controlled lubrication design (based on gas requirements)
Double distance piece structure preventing oil contamination
Water-cooled / air-cooled / mixed cooling options
PLC control system with protection and monitoring functions
Customized pressure range and compression stages
Gas-specific material and sealing selection
Skid-mounted or containerized design
Motor-driven or engine-driven options
Designed according to project process flow
Application Area
Coke oven gas compressors are widely used in the coking industry (gas recovery and desulfurization/denitrification), chemical synthesis (ammonia/urea/methanol/hydrogen purification), energy utilization (gas power generation/kiln fuel), environmental protection and resource utilization (LNG production/biogas blending), and special industrial scenarios (steel smelting/carbon capture). Their core advantages lie in corrosion-resistant design (suitable for sulfur-containing/ammonia composition), explosion-proof performance (ExdIICT4 explosion-proof level), and wide operating condition adjustment ability (frequency conversion control of 0.8-2.5MPa pressure), achieving efficient conversion of coke oven gas from by-products to clean energy/chemical raw materials.
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
Below are typical process gas compressor models.
Actual configuration will be customized according to your project requirements.
| 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
 |  |  |
| Ningxia Zhongneng new materials engineering | Alibek oilfield in Southern Kazakhstan | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
The compressor can be provided in various structural forms, including D-type, M-type, S-type, W-type, V-type, and Z-type. This allows customers to choose the most suitable structure based on their specific installation and operational requirements.
The DW-13.4 / (0.03-0.07) -17 Coke Oven Gas Compressor supports water cooling, air cooling, and mixed cooling methods. Customers can select the appropriate cooling method according to their working environment and cooling needs.
Yes, the product provides independent solutions tailored to customers' specific usage requirements. This includes customization based on flow rate, purity, pressure, usage environment, main purpose, and other specific customer requirements, from design to product customization.
Experienced manufacturer of wellhead and process gas compressors
Proven references in oilfield and chemical process projects
In-house machining, assembly, and testing
Each unit tested under simulated working conditions before delivery
The DW series wellhead and process gas compressors are heavy-duty reciprocating compressors engineered for oil & gas fields and chemical process industries.
They are widely used for wellhead gas compression, associated gas recovery, and various process gas boosting applications, where gas composition, pressure fluctuation, and operating conditions are highly demanding.
Each compressor is custom-designed according to gas composition, inlet pressure, discharge pressure, flow rate, and site conditions, ensuring safe, stable, and long-term operation.
Process Gas Compressor Applications
Wellhead Gas Compression
Associated Gas Compressor Systems
Feed Gas and Synthesis Gas Compression
Tail Gas and Flash Gas Recovery
Regeneration Gas and Non-Condensable Gas Handling
Helium Recovery and Rich Carbon Gas Compression
Heavy-duty reciprocating piston compressor design
Stable operation under variable pressure and flow conditions
High efficiency with low energy consumption
Corrosion-resistant materials for sulfur-containing and mixed gases
Optimized sealing design for toxic and flammable media
Suitable for associated gas, cracked gas, and synthesis gas
Structure & Configuration
The compressor adopts a D-type (symmetrical balanced) structure with multi-stage compression.
Key design highlights include:
Oil-free or controlled lubrication design (based on gas requirements)
Double distance piece structure preventing oil contamination
Water-cooled / air-cooled / mixed cooling options
PLC control system with protection and monitoring functions
Customized pressure range and compression stages
Gas-specific material and sealing selection
Skid-mounted or containerized design
Motor-driven or engine-driven options
Designed according to project process flow
Application Area
Coke oven gas compressors are widely used in the coking industry (gas recovery and desulfurization/denitrification), chemical synthesis (ammonia/urea/methanol/hydrogen purification), energy utilization (gas power generation/kiln fuel), environmental protection and resource utilization (LNG production/biogas blending), and special industrial scenarios (steel smelting/carbon capture). Their core advantages lie in corrosion-resistant design (suitable for sulfur-containing/ammonia composition), explosion-proof performance (ExdIICT4 explosion-proof level), and wide operating condition adjustment ability (frequency conversion control of 0.8-2.5MPa pressure), achieving efficient conversion of coke oven gas from by-products to clean energy/chemical raw materials.
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
Below are typical process gas compressor models.
Actual configuration will be customized according to your project requirements.
| 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
| | |
| Ningxia Zhongneng new materials engineering | Alibek oilfield in Southern Kazakhstan | Zaozhuang CNG compressor project of Chengdu Shenliang Technology Co., Ltd. |
The compressor can be provided in various structural forms, including D-type, M-type, S-type, W-type, V-type, and Z-type. This allows customers to choose the most suitable structure based on their specific installation and operational requirements.
The DW-13.4 / (0.03-0.07) -17 Coke Oven Gas Compressor supports water cooling, air cooling, and mixed cooling methods. Customers can select the appropriate cooling method according to their working environment and cooling needs.
Yes, the product provides independent solutions tailored to customers' specific usage requirements. This includes customization based on flow rate, purity, pressure, usage environment, main purpose, and other specific customer requirements, from design to product customization.
Experienced manufacturer of wellhead and process gas compressors
Proven references in oilfield and chemical process projects
In-house machining, assembly, and testing
Each unit tested under simulated working conditions before delivery
