Simultaneous Removal of H2S and Organosulfur Compounds from Liqueifed Petroleum Gas Using

Simultaneous Removal of H2S and Organosulfur Compounds from Liqueifed Petroleum Gas Using

Formulated Solvents：Solubility Parameter

Investigation and Industrial Test

Zhang Feng;Shen Benxian;Sun Hui;Liu Jichang;Shang Jianfeng

【期刊名称】《中国炼油与石油化工（英文版）》 【年(卷),期】2015(000)001

【摘要】The performance of four formulated solvents (labeled as UDS-I, UDS-II, UDS-III, and UDS-IV) for removing methyl mercaptan from liqueifed petroleum gas was predicted based on a two-dimensional solubility parameter theory. The calculation results show that UDS-IV has the closest solubility parameter to that of methyl mercaptan as compared with other tested solvents, indicating the strongest afifnity and the highest solubility for methyl mercaptan. The industrial tests at a plant for desulfurization of LPG produced from the delayed coker have shown that the UDS solvents have the excellent performance for removal of organosulfur compounds (mainly methyl mercaptan). Although the sulfur loading dramatically increases, the total sulfur content of LPG treated with UDS-IV can be reduced by about 50% in comparison withN-methyl diethanolamine. In addition, UDS-IV has superior regeneration performance and selectivity for sulfur compounds over hy-drocarbons. The industrial test and the solubility parameter