液化气脱硫醇后总硫高原因分析及优化措施  

Analysis and Optimization Measures for High Total Sulfur after Mercaptan Removal of Liquefied Gas

作　　者：李玉博 熊逸 贾宝财 Li Yubo;Xiong Yi;Jia Baocai(Panjin North Asphalt Fuel Co.,Ltd.,Panjin Liaoning 124000,China)

机构地区：[1]盘锦北方沥青燃料有限公司,辽宁盘锦124000

出　　处：《山西化工》2024年第7期104-107,共4页Shanxi Chemical Industry

摘　　要：针对某石化公司催化脱硫醇装置检修后再次开工运行存在的问题进行了分析,对于脱硫醇装置存在的碱液再生效果不理想、液化气脱硫塔后硫化氢高及脱硫醇后总硫高,再生后碱液中二硫化物高等问题提出了整改方案,并对工艺操作进行了优化调整。技改及工艺指标操作优化后,经过运行结果表明,再生碱液中二硫化物稳定可控,液化气脱硫醇后硫化氢、总硫及碳四总硫合格情况下,碱液使用周期延长,碱渣排放量较以前减少。烷基化车间耗酸量减少及反应器投用,有一定经济效益。In this paper,the problems existing in the catalytic sweetening unit of a petrochemical company were analyzed after maintenance and operation again.For the problems existing in the sweetening unit,such as unsatisfactory lye regeneration effect,high hydrogen sulfide after LPG desulfurization tower and high total sulfur after sweetening,and high disulfide in lye after regeneration,a rectification plan was proposed,and the process operation was optimized and adjusted.After technical improvement and process index operation optimization,the operation results show that the disulfide in the recycled lye is stable and controllable,and the Lye service life is extended and the discharge of alkali residue is reduced than before when the hydrogen sulfide,total sulfur and carbon tetra-total sulfur are qualified after the LPG removal.The acid consumption of alkylation plant is reduced and the reactor is put into use,which has certain economic benefits.

关 键 词：液化气脱硫醇装置 液化气总硫 脱后硫化氢 反抽提汽油 

分 类 号：X701.3[环境科学与工程—环境工程]