Biogas compressor

Product Description:

Biogas is mainly sourced from landfill fermentation, food waste treatment, and other methods. Its main components are methane, carbon dioxide, and other relatively low-content media. It can be pressurized by a compressor and delivered to users via truck.

Working Principle of Biogas Compressor

The core function of a biogas compressor is to compress biogas (mainly composed of methane and carbon dioxide) through mechanical work, increasing its pressure and reducing its volume to meet the requirements of transportation, purification or storage. It is essentially positive displacement compression (the mainstream type), which consists of four core processes:

Suction: The intake valve of the compressor opens, and low-pressure biogas (atmospheric pressure ~0.1 MPa) enters the cylinder/compression chamber, while the exhaust valve remains closed.

Compression: The piston or rotor moves to reduce the volume of the compression chamber, squeezing the biogas and causing its pressure and temperature to rise simultaneously (adiabatic or polytropic compression. Since biogas contains flammable methane, temperature control is required to prevent overheating and explosion).

Discharge: When the pressure inside the chamber is greater than or equal to the discharge pressure, the exhaust valve opens and high-pressure biogas is discharged, with the intake valve closed.

Cooling/Circulation: Compression generates heat, so water cooling or air cooling is required (to prevent methane combustion and explosion, as well as aging of sealing parts). After a single cycle, suction-compression-discharge is repeated to continuously output high-pressure biogas (common outlet pressure: 0.4~25 MPa, suitable for tanker transportation, pipe networks and purification).

Main technical parameters of biogas compressor

NO.	Model	Gas	Flow(Nm³/h)	Intake pressure(MPaG)	Discharge pressure (MPaG)	Cooling Method	Remark
1	VW-7/1-45	Biogas	700	0.1	4.5	Water-cooled	Oil-free lubrication
2	ZW-3.5/1-45	Biogas	350	0.1	4.5	Water-cooled	Oil-free lubrication
3	ZW-0.85/0.16-16	Biogas	50	0.016	1.6	Water-cooled	Oil-free lubrication
4	VW-5/1-45	Biogas	500	0.1	4.5	Water-cooled	Oil-free lubrication
5	VW-5.5/4.5	Biogas	280	Slightly positive pressure	0.45	Water-cooled	Oil-free lubrication
6	ZW-0.8/2-16	Biogas	120	0.2	1.6	Water-cooled	Oil-free lubrication
7	DFW-8.7/5	Biogas	520	Slightly positive pressure	0.5	Air-cooled	Oil-free lubrication
8	DFW-3.6/(0.15-0.2)-15	Biogas	260	0.015-0.02	1.5	Air-cooled	Oil-free lubrication, with soundproof enclosure
9	VW-10/(0-0.15)-5	Biogas	690	0-0.015	0.5	Water-cooled	Oil-free lubrication, with soundproof enclosure
10	VW-16.5/(0.3-0.4)-9	Biogas	1400	0.03-0.04	0.9	Water-cooled	Oil-free lubrication
11	VF-0.71/(12-13)-250	Biogas	590	1.2-1.3	25	Air-cooled	Oil-lubricated
12	DW-38/1.6	Biogas	2000	Slightly positive pressure	0.16	Water-cooled	Oil-free lubrication
13	DFW-4.4/0.1-5	Biogas	250	0.01	0.5	Air-cooled	Oil-free lubrication
14	DW-2.9/15	Biogas	150	Slightly positive pressure	1.5	Water-cooled	Oil-free lubrication
15	DFW-12.4/5	Biogas	720	Slightly positive pressure	0.5	Air-cooled	Oil-free lubrication
16	DW-17/3	Biogas	1000	Slightly positive pressure	0.3	Water-cooled	Oil-free lubrication
17	VW-8.8/(0.1-0.3)-8.5	Biogas	550	0.01-0.03	0.85	Water-cooled	Oil-free lubrication
18	DFW-11.3/0.2-12	Biogas	700	0.02	1.2	Air-cooled	Oil-free lubrication, with soundproof enclosure
19	DW-18.2/0.1-6	Biogas	1200	0.01	0.6	Water-cooled	Oil-free lubrication
20	VW-4.8/6	Biogas	280	Slightly positive pressure	0.6	Water-cooled	Oil-free lubrication
21	DW-35/2	Biogas	1830	Slightly positive pressure	0.2	Water-cooled	Oil-free lubrication
22	DW-15.4/(0.1-0.15)-7	Biogas	1050	0.01-0.015	0.7	Water-cooled	Oil-free lubrication
23	DFW-11.3/0.2-12	Biogas	810	0.02	1.2	Air-cooled	Oil-free lubrication
24	V-0.92/（4-6）-250	Biogas	270-380	0.4-0.6	25	Water-cooled	Oil-lubricated

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Biogas compressor

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