Biogas purification is the removal of impurity components from biogas to make high quality CH4 with high methane content, calorific value and impurity gas components that meet the requirements of natural gas standards.
The biogas produced by the anaerobic fermentation process contains approximately 55% CH4 and 45% CO2, as well as small amounts of H2S, H2O and other gaseous components, which can be increased to over 95% by separation and purification. The biogas separation and purification system is divided into two parts: pre-treatment and membrane separation.
The content of methane in biogas is only about 60%, the rest is CO2, nitrogen, hydrogen sulphide, etc. After purification, the methane content can reach more than 97%, reaching the standard of city natural gas. Methane combustion produces 60% of the CO2 of petrol and achieves an environmental effect by not emitting acid rain forming atmospheric pollution gases such as sulphide and nitrogen compounds. One of the major advantages of biogas is that it can completely replace petrol, diesel and even fossil natural gas for vehicles; it can also make full use of the existing infrastructure for natural gas storage, transportation and refuelling, thus significantly saving investment in its development and application, with a broad market outlook.
Dear Air Separation can design and manufacture biogas purification plant according to customer requirements to produce products that meet national natural gas standards.
