沼气脱硫器，涉及沼气应用装置，其特征在于脱硫瓶内的进气口上连接一个悬空的多孔管，多孔管尽可能长地横向伸入脱硫瓶内腔，多孔管上密布小孔，小孔的孔径小于氧化铁小颗粒的直径。优点在于多孔管的设置，使与氧化铁小颗粒之间的出气道面积大为增大，则出气量大；其次水分部分泡烂氧化铁颗粒但仍能留存部分出气孔；再次在于多孔管悬空设置，使脱硫瓶内水分积存在悬空多孔管下方，不容易泡烂多孔管周边的氧化铁颗粒。
The utility model relates to a biogas application device, which is characterized in that a suspended porous pipe is connected to the air inlet in the desulfurization bottle, the porous pipe extends horizontally into the inner cavity of the desulfurization bottle as long as possible, and the porous pipe is densely covered with small holes, and the pore diameter of the small hole is smaller than the diameter of small iron oxide particles. The advantages of the porous pipe are that the area of the air outlet between the small iron oxide particles and the porous pipe is greatly increased, so the gas output is large; secondly, the moisture part of the iron oxide particles is soaked, but part of the air outlet holes can still be retained; thirdly, the porous pipe is arranged in the air, so that the water in the desulfurization bottle exists under the suspended porous pipe, which is not easy to soak the iron oxide particles around the porous pipe.