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        首頁- 新聞資訊 > 公司新聞 > 2022-06-07


        Biogas purification process
        1. Biogas characteristics
        Biogas is a kind of mixed gas. Its composition not only depends on the type and relative content of fermentation raw materials, but also changes with the different fermentation conditions and fermentation stages. When the biogas anaerobic reactor is in the normal stable fermentation stage, the volume composition of biogas is roughly: methane (CH4) 50% ~ 75%, carbon dioxide (CO2) 25% ~ 45%, water (H2O, 20 ~ 40 ℃) 2% ~ 7%, nitrogen (N2) 0 ~ 2%, a small amount of oxygen (O2), and less than 1% of hydrogen (H2) and hydrogen sulfide (H2S).
        沼氣提純工藝,與其它可燃氣體相比,沼氣具有抗爆性良好和燃燒產物清潔等特點。目前,沼氣主要應用在發電、供熱和炊事方面,沼氣中的CO2降低了沼氣的能量密度和熱值,限制了沼氣的利用范圍,要去除沼氣中的CO2、H2S 和水蒸氣等將沼氣提純為生物天然氣(BNG)。生物天然氣可壓縮用于車用燃料(CNG)、熱電聯產(CHP)、并入天然氣管網、燃料電池以及化工原料等領域。汽車使用生物天然氣不僅可以降低尾氣排放造成的空氣污染,而且溫室氣體的凈排放量減少75%~200%,生物天然氣可混入現有的天然氣管網,降低對石化能源的依賴。
        Compared with other combustible gases, biogas purification process has the characteristics of good explosion resistance and clean combustion products. At present, biogas is mainly used in power generation, heat supply and cooking. The CO2 in biogas reduces the energy density and calorific value of biogas and limits the scope of biogas utilization. It is necessary to remove CO2, H2S and water vapor in biogas and purify biogas into biological natural gas (bng). Bio natural gas can be compressed for vehicle fuel (CNG), cogeneration (CHP), integration into natural gas pipeline network, fuel cell, chemical raw materials and other fields. The use of biogas in automobiles can not only reduce the air pollution caused by exhaust emissions, but also reduce the net emission of greenhouse gases by 75% ~ 200%. Biogas can be mixed into the existing natural gas pipeline network, reducing the dependence on petrochemical energy.
        2. Biogas purification technology
        At present, landfill gas purification processes include pressure swing adsorption (PSA), water washing, chemical absorption, membrane separation, selective separation, etc. at present, the more mature and widely used methods in the world are pressure swing adsorption (PSA), chemical absorption (amine purification) and membrane separation.
        The above is biogas purification http://www.highcute.net Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call us for consultation!

        相關產品 我們的存在,是為了更好的服務于沼氣等可燃氣體凈化及利用行業
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