摘要
介绍了液化气中硫化物的类型、精制路线及精制过程中硫化物的变化。精制前液化气中主要存在硫化氢、甲硫醇、乙硫醇等硫化物,精制后则主要为二硫化物;采用烃类有机溶剂抽提可以有效脱除氧化后磺化酞菁钴的碱液中的多硫化物,从而减少或避免再生剂碱中的多硫化物进入液化气中。初步研究显示,MTBE中的硫化物来源于精制后的液化气,但硫化物的形态却已经发生了转化;对MTBE进行蒸馏,可以有效脱除其中的硫化物,得到硫质量分数小于10gμ/g的MTBE。
MTBE is an important additive of gasoline product and manufactured from refined LPG. The sulfur remained in the refined LPG influence the sulfur content of MTBE. It is found that the sulfur in refined LPG mainly comes from oxidized sulfonated cobalt phthalocyanine where the sulfide is in the form of disulfide and/or polysulfide. Based on these findings, the sulfur removal technologies from LPG and MTBE are tentatively proposed, respectively. Sulfur can be effectively removed from oxidized sulfonated cobalt phthalocyanine by organic solvent extraction to decrease the sulfur content in refined LPG and the MTBE with less than 10 μg/g sulfur can be produced by distillation.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2013年第5期52-56,共5页
Petroleum Processing and Petrochemicals
