A biogas desulfurizer is a biogas operating device characterized by a suspended porous pipe connected to the inlet of the desulfurization bottle. The porous pipe can extend horizontally into the inner cavity of the desulfurization bottle as long as possible, and the porous pipe is densely covered with small holes, with a pore size smaller than the diameter of small iron oxide particles. The benefit lies in the setting of porous pipes, which greatly increases the area of the air outlet between small iron oxide particles and results in a large air output; Secondly, some of the water soaked iron oxide particles but still retained some of the air vents; Once again, the porous tube is suspended to prevent the accumulation of water in the desulfurization bottle below the suspended porous tube, making it difficult to soak the iron oxide particles around the porous tube.
The dry desulfurization of biogas desulfurizer is a simple and effective desulfurization method, which is generally suitable for biogas desulfurization with small storage capacity and low hydrogen sulfide concentration. The fundamental principle of the dry method for removing hydrogen sulfide (H2S) from biogas gas is a method of using O2 to oxidize H2S into sulfur or sulfur oxides, also known as the dry oxidation method. The composition of the dry method equipment is to place fillers in a container, with a filler layer consisting of activated carbon, iron oxide, etc. The gas passes through the filling layer of the container at a low flow rate from one end, and hydrogen sulfide (H2S) is oxidized to sulfur or sulfur oxides, remaining in the filling layer. After contamination, the gas is discharged from the other end of the sedimenter.
The dry desulfurization of biogas desulfurizer mainly includes components such as the main steel structure, desulfurizer filler, observation window, pressure gauge, temperature gauge, etc. The desulfurization tower is generally planned as one for use and one for backup, with alternative use, i.e. one for desulfurization and one for regeneration.
干法脱硫步： Fe2O3 · H2O ＋ 3 H2S = Fe2S3 ＋ 4 H2O （脱硫）
Dry desulfurization step: Fe2O3 · H2O+3 H2S=Fe2S3+4 H2O (desulfurization)
二步： Fe2S3 ＋ 3÷2 O2 ＋ 3 H2O = Fe2O3 · H2O ＋ 2 H2O ＋ 3 S（再生）
Step 2: Fe2S3+3 ÷ 2 O2+3 H2O=Fe2O3 · H2O+2 H2O+3 S (regeneration)
The biogas rich in hydrogen sulfide is reflected by the desulfurizer with high load at the bottom inlet, and the upper part of the reflector is a low load desulfurizer layer. After planning the biogas airspeed and line speed, the fine desulfurization results can be achieved through dry desulfurization.
Before biogas enters the dry desulfurization tower, a condensate tank or biogas particle filter should be installed. This device can remove particles mixed in biogas and make biogas rich in certain humidity before entering desulfurization.
When discoloration of the desulfurization agent or excessive loss of system pressure is observed, another desulfurization tower should be used instead. After the methane is released, the future desulfurization tower will undergo natural ventilation to regenerate the desulfurization agent. When the results are not satisfactory, the waste desulfurizer should be removed from the bottom of the tower body. At the same time as the waste filler is discharged from the bottom, novel desulfurizer fillers of the same volume should be included in the reactor.
This article is dedicated to the friendship of biogas desulfurization. For more relevant knowledge, please click Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned