In recent years, people pay more and more attention to energy. As a clean energy, biogas has attracted the attention of all sectors of society. The utilization of biogas can optimize the utilization of resources, which is in line with China's sustainable development strategy. Combined with the actual situation, the purification of biogas in the utilization of biogas can make the limited utilization of biogas.

生物天然气是沼气通过净化提纯后得到的绿色、低碳、清洁环保的可再生燃气,与常规天然气成分、热值等基本一致。它的使用为传统沼气产业开辟了新的应用领域,提高了传统沼气工程的经济性,促进了沼气工程运营的持续性和稳定性,以及人类对天然气需求量的增加推动了沼气提纯制天然气的发展，使得沼气提纯制天然气这一技术具有广阔的市场前景。

Biological natural gas is a green, low-carbon, clean and environment-friendly renewable gas obtained by purification and purification of biogas, which is basically consistent with the composition and calorific value of conventional natural gas. Its use has opened up new application fields for the traditional biogas industry, improved the economy of the traditional biogas project, promoted the sustainability and stability of the operation of the biogas project, and the increase of human demand for natural gas has promoted the development of biogas purification to natural gas, making the technology of biogas purification to natural gas have broad market prospects.

沼气主要成分为甲烷和二氧化碳,还含有少量的水、硫化氢、有机硫、氧气、氮气等杂质,通过对沼气进行净化提纯,将CO2从混合气中分离得到的高纯度甲烷气被称为生物天然气，可制取高品质的生物天然气,可以直接作为石化天然气的替代燃料。由于沼气是一种清洁再生能源，用处普遍，价钱低廉，容易获取等优势，现已替代天然气的使用。

Biogas is mainly composed of methane and carbon dioxide, and also contains a small amount of water, hydrogen sulfide, organic sulfur, oxygen, nitrogen and other impurities. Through the purification and purification of biogas, the high-purity methane gas obtained by separating CO2 from the mixture is called biological natural gas, which can produce high-quality biological natural gas and can be directly used as an alternative fuel for Petrochemical Natural gas. Because biogas is a clean and renewable energy, it is widely used, cheap and easy to obtain. It has replaced the use of natural gas.

沼气进行提纯制取天然气生产设备主要是依赖于大中型沼气发酵系统工程或垃圾处理填埋场，可以通过对生活学习垃圾、餐厨垃圾、动物粪便、农作物秸秆等生物质厌氧发酵，获得沼气，然后我们通过膜分离法提纯沼气，使之达到提高天然气的品质。

The production equipment for purifying biogas to produce natural gas mainly depends on large and medium-sized biogas fermentation system engineering or waste treatment landfill. Biogas can be obtained by anaerobic fermentation of domestic and learning waste, kitchen waste, animal manure, crop straw and other biomass, and then we purify biogas by membrane separation method to improve the quality of natural gas.