The main purpose of biogas purification is to remove carbon dioxide to obtain high purity methane, which is mainly derived from the decarbonization technology of natural gas and synthetic ammonia. Because the amount of biogas is much less than natural gas or ammonia gas change, the selection of decarbonization technology is more focused on miniaturization and energy saving.
Biogas can be purified into natural gas, which is a renewable and clean energy. There is a vivid analogy in the biogas industry, that is, to build a small biogas pond, which is not only equivalent to the construction of a small natural gas plant, but also a small sewage treatment plant, garbage treatment plant, organic fertilizer plant and small forest farm. Known as "money bank" and "treasure collecting basin", it is a small investment, great role, and benefit the country and the people.
Biogas can also control air pollution and river pollution. With biogas, the indoor carbon monoxide concentration is 80% lower than that of coal-fired coal, 60% of carbon dioxide concentration, 80% lower hydrogen sulfide, 90% lower dust concentration. Meanwhile, it also greatly reduces the total number of bacteria, E.coli, ammonia nitrogen and other indicators of drinking water source, thus protecting water source and improving water environment quality.
As a clean distributed energy, biogas purification can replace petrochemical natural gas, and it is used for vehicle fuel and residential gas. It is an important way to make high-value and energy-based utilization of biogas. China is not only rich in biogas resources, but also has huge potential for biogas production. In the future, the development of biomass energy is immeasurable. The main route for further utilization of biogas is power generation and purification. DEAR air separation can design standard biogas purification according to different requirements of customers. The biogas purification equipment is environmentally friendly, efficient and safe, and can achieve a win-win economic and social benefits.
