芳烃抽提环丁砜溶剂系统的工艺维护  

PROCESS MAINTENANCE OF SULFOLANE SOLVENT SYSTEM IN AROMATICS EXTRACTION UNIT

作　　者：俞霖[1] 

机构地区：[1]中国石化镇海炼油化工股份有限公司,浙江省宁波市315207

出　　处：《炼油技术与工程》2005年第6期48-51,共4页Petroleum Refinery Engineering

摘　　要：对芳烃抽提装置引起环丁砜溶剂降解及降解产物造成设备腐蚀和堵塞的原因进行了分析,提出了延长抽提系统运行周期的工艺措施(包括回收塔不抽真空,控制溶剂pH值在8—9,保持溶剂中Cl-质量分数在20μg/g以下,改善再生塔操作,充分利用贫溶剂及抽提原料过滤器等),在实际操作运行中取得了很好的应用效果。The equipment corrosion and blockage caused by sulfolane solvent degradation and the degraded product in aromatics extraction unit have been analyzed. Measures to prolong the operation period of extraction system have been proposed as follows: Maintaining recovery tower atmospheric, controlling pH valve of the solvent at 8 - 9 and Cl- content below 20 μg/g, improving the operation of regenerator and making a full use of lean oil agent and extraction feedstock filter. Good application effect has been obtained by these measures.

关 键 词：环丁砜 工艺维护 溶剂系统 芳烃抽提装置 设备腐蚀 降解产物 工艺措施 运行周期 抽提系统 质量分数 Cl^- 充分利用 实际操作 抽真空 回收塔 pH值 再生塔 过滤器 

分 类 号：TE966[石油与天然气工程—石油机械设备]