Biogas purification is to remove the impurity components in biogas and make it high-quality CH4 with high methane content, calorific value and impurity gas component quality meeting the requirements of natural gas standards.

厭氧過程產生的沼氣中含有約55%的CH4和45%的CO2，還有少量的H2S、H2O等氣體成分，通過分離提純可將CH4濃度提高到95%以上。沼氣分離提純系統分為預處理和膜分離兩部分。

The biogas produced by anaerobic process contains about 55% CH4 and 45% CO2, as well as a small amount of H2S, H2O and other gas components. The concentration of CH4 can be increased to more than 95% through separation and purification. The biogas separation and purification system is divided into two parts: pretreatment and membrane separation.

提純的意義，沼氣中甲烷的含量只有60%左右，其余為二氧化碳、氮氣、硫化氫等，經過提純，可使甲烷含量達到97%以上，達到城市天然氣的標準。甲烷燃燒產生CO2量為汽油的60%，且不排放硫化物和氮化物等形成酸雨的大氣污染氣體，實現了環保效應。生物天然氣的一大優勢，是可以完全替代車用汽油、柴油，乃至替代車用化石天然氣；并能充分利用現成的天然氣儲、運、加氣的基礎設施，從而大幅節省開發應用的投資，市場前景廣闊。

The significance of purification: the methane content in biogas is only about 60%, and the rest is carbon dioxide, nitrogen and hydrogen sulfide. After purification, the methane content can reach more than 97%, reaching the standard of urban natural gas. The amount of CO2 produced by methane combustion is 60% of that of gasoline, and does not emit atmospheric pollutants such as sulfide and nitride to form acid rain, realizing the effect of environmental protection. A major advantage of biological natural gas is that it can completely replace vehicle gasoline, diesel, and even replace vehicle fossil natural gas; It can make full use of the existing infrastructure of natural gas storage, transportation and filling, so as to greatly save the investment in development and application, and the market prospect is broad.

根據客戶要求設計制造沼氣提純設備，制備符合國家天然氣標準的產品氣。

Design and manufacture biogas purification equipment according to customer requirements and prepare product gas that meets national natural gas standards.

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