What is a desulfurizer filtrating system?
A desulfurizer scrubber filtration system is an air treatment plant of integrated components designed to remove hydrogen sulfide (H2S) from biogas. This system typically includes a chemical scrubber, an oxidation tank, and a sedimentation tank. It is specifically engineered to reduce the levels of toxic and corrosive hydrogen sulfide gas, thereby making biogas safer for use and helping to protect equipment from corrosion.
How does it work?
The desulfurization unit consists of a chemical scrubber combined with an oxidation tank and a sedimentation tank. The biogas enters from the bottom of the scrubbing tower and it is washed at low speed in counter-current with the washing liquid (NaOH) that moves through the packed bed. The solution then flows to the oxidation tank where a blower introduces air to promote oxidation; finally, the liquid is transferred to the sedimentation tank to let the sulfur settle at the bottom, and the liquid can be recirculated to the scrubber.