1, General description Desulfurization system is our directional design for biogas generate electricity. It combined the actual demand of biogas generate electricity, then desulfurization and dehydration.The desulfurization use the combination of physical and chemical technology, the dehydration use machinery, gas water separation membrane technology. The whole process has high-efficient, easy management, low operating cost, and other advantages.

 2, Theory of desulfurization Dry desulfurization H2S was oxidized to sulfur or sulfide by using O2, also called dry oxidation method. The consist of dry equipment: put filling into one tank (the packing layer can be ferric oxide desulfurizer, active carbon desulfurizer, etc. The best is ferric oxide desulfurizer, because it has high sulfur capacity and low cost.). The gas go through the packing layer from one side of the tank with low speed, H2S was oxidized to sulfur or sulfide or iron sulfide, stayed in the pacing layer, and the purified gas discharged from other side of the tank. Biogas contains a lot of water when generated from the anaerobic fermentation tank. Due to the changes of temperature and pressure in the process of the pipeline transportation system, dew-point depression and the moisture separated out, this can make the two phase flow in the system, increase the resistance of the system, even can blocking the pipeline. The function of the gas water separator is to remove the moisture by the use of cold separation, remove the hidden danger of the system. The gas water separator our company developed has high efficiency. On the basis of the cold separation, we developed unique packing system, disperse the gas-liquid two phase into many little bubble, droplet or liquid film, increase the contact area of the gas-liquid two phase, more efficient removal of the free water in the biogas. Meanwhile, the packing system has good chemical stability, anticorrosion to gas or liquid, and has some function of fire resistance. Appropriate voidage, can decrease the resistance of gas. Good mechanical strength and other advantages. Moisture removal rate can up to 95%.