Biological desulfurization system for crude natural gas

• Main Authors: HAN LINGTONG, QIAO ZHUANGMING, YU XUEFENG, TAI JIAFEN, ISMAGILOV ZINFIR RISADOVICH, ZHANG HAIYAN, ZHANG KE
• Format: Patent
• Language: Chinese; English
• Published: 24.03.2023
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

The utility model relates to a biological desulfurization system for crude natural gas. The biological desulfurization system comprises a washing absorption tower, a bioreactor and a centrifugal sedimentation separator, wherein the washing absorption tower is used for alkaline absorption of hydrogen sulfide gas; the bioreactor is used for rich liquid regeneration and sulfur production; washing liquid for absorbing hydrogen sulfide gas is arranged in the washing absorption tower, a flash tank is connected below the washing absorption tower, the flash tank is positioned above the bioreactor, and the washing liquid containing sodium hydrosulfide enters the bioreactor through the flash tank; self-sufficient thiobacillus and a gas distribution system are arranged in the bioreactor, the gas distribution system is used for enabling oxygen and washing liquid containing sodium hydrosulfide to react to generate elemental sulfur and desulfurization liquid, and the elemental sulfur and the desulfurization liquid flow int