Dear air separation biogas purifies natural gas. The main components of biogas and natural gas are CH4. The product gas purified by CH4 is biogas (BNG) and compressed natural gas (CNG) when pressurized to 25 MPa.Dear air separation biogas purification natural gas 1) equipment investment is small, process is simple and operation is convenient; 2) water as absorber is inexpensive, non-toxic and easy to regenerate; 3) water has no chemical reaction to each component of biogas and little corrosion to equipment; 4) Dear air separation biogas purified natural gas circulating water can be recycled without environmental pollution;5) Higher gas recovery of products; 6) Dear air separation biogas purification of natural gas is easy to operate and easy to promote.
