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含硫天然气的净化工艺,一般有两个工段。一是脱硫工段:含有机胺的脱硫液在吸收塔内将天然气中的酸气(硫化氢、二氧化碳)吸收,净化后的天然气即可用于工业生产;吸收了酸气的脱硫液经换热后,进入再生塔内降压、加热解析出酸气,复活后再循环使用。二是制硫工段(又称硫磺回收工段):先将脱硫工段解析出的高浓度酸气与空气混合进燃烧炉燃烧,部分燃烧成二氧化硫,经废热锅炉降温后再进入转化器内转化成硫磺,硫磺蒸汽再在冷却器内冷凝为液体流入储罐,即得高纯度的硫磺产品。此两工段在气田建设中组成脱硫厂。现将脱硫厂发生过的较重大腐蚀事例与
Sulfur gas purification process, there are generally two sections. First, the desulfurization section: organic amine desulfurization solution in the absorption tower of natural gas acid gas (hydrogen sulfide, carbon dioxide) absorption, purified natural gas can be used for industrial production; absorbed acid gas desulfurization liquid after heat exchange , Into the regeneration tower pressure, heat acid gas solution, resurrection and recycling. Second, the sulfur section (also known as sulfur recovery section): first desulfurization section of the high concentration of acid gas and air mixed into the combustion furnace combustion, part of the combustion into sulfur dioxide, the waste heat boiler cooling and then into the converter into sulfur , Sulfur vapor and then condense in the cooler liquid into the tank, which was high purity sulfur products. The two sections in the construction of gas field desulfurization plant. Now the desulfurization plant has occurred more serious cases of corrosion and