Before the biogas enters the biogas generator unit, it needs pretreatment. The biogas produced by feces contains not only a large amount of methane and carbon dioxide, but also other components such as hydrogen sulfide, impurities, water, nitrogen oxides, siloxane, etc. The biogas produced by anaerobic fermentation of feces contains a large amount of hydrogen sulfide, which will corrode the back-end equipment. Therefore, the biogas desulfurization process has been carried out.
The untreated biogas does not meet the requirements of engine gas quality. The biogas directly enters the engine, which may cause power fluctuation, cylinder knock, shutdown and even explosion of the unit. If the gas is simply treated, the moisture, dust content, pressure and temperature do not meet the requirements of the unit. The accumulated water has led to a large amount of condensate gathering in the pipeline, and the availability and power generation of the unit have decreased significantly; The excessive dust content leads to excessive pressure loss, and the internal cylinder block of the unit is seriously damaged; The pressure and temperature do not meet the requirements of the unit, the unit trips frequently, the availability rate decreases significantly and the maintenance and overhaul cost increases. After the gas pretreatment after transformation, the generating capacity of the unit can be increased by 70%. Therefore, the effect of gas quality treatment directly affects the working efficiency of the final unit, thus affecting the income. Therefore, selecting good pretreatment equipment for gas dehumidification, impurity removal, voltage stabilization, constant temperature and other work is the premise to ensure benefits.
沼气发电机组对使用环境及沼气的基本要求：
Basic requirements for the use environment and biogas of biogas generator set:
1.燃气进气压力为2-10kpa,发电机组的气体压力过高或过低则需加调压阀或增压设备；
1. The gas inlet pressure is 2-10kpa. If the gas pressure of the generator set is too high or too low, a pressure regulating valve or supercharging equipment shall be added;
2.燃气中不含游离水和大于5μm的游离物质，燃气中硫化氢含量需低于10ppm；
2. The fuel gas contains no free water and more than 5 μ M, and the hydrogen sulfide content in the gas shall be lower than 10ppm;
3.机组一般使用环境：温度5℃~35℃，海拔高度≤500m；
3. General operating environment of the unit: temperature 5 ℃~35 ℃, altitude ≤ 500m;
备注：燃气中硫化氢含量过高时，对燃气机组零部件会造成一定的腐蚀，影响机组正常使用及机组使用寿命。
Remarks: When the hydrogen sulfide content in the gas is too high, it will cause certain corrosion to the components of the gas turbine unit, affecting the normal use and service life of the unit.
The above is a detailed introduction to biogas purification, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide you with professional services https://www.hneee.net
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