延迟焦化装置液化石油气脱硫醇工艺优化  

Process optimization of liquefied petroleum gas sweetening of delayed coking unit

作　　者：程佛子 周静 肖翔[2] 窦勇[2] 

机构地区：[1]武汉炼化工程设计有限责任公司,湖北省武汉市430020 [2]中国石油化工股份有限公司武汉分公司,湖北省武汉市430082

出　　处：《炼油技术与工程》2014年第1期26-29,共4页Petroleum Refinery Engineering

摘　　要：介绍了采用纤维液膜反应技术的1.2 Mt/a延迟焦化装置液化石油气脱硫醇工艺,并对流程中溶剂反抽提部分溶剂汽油夹带大量碱液的原因进行了分析,确定对碱液再生部分中氧化塔及剂碱分离罐进行改造。同时增上溶剂汽油水洗流程,该流程采用旋流萃取分离技术,将溶剂汽油和水进行分离,溶剂中按最大碱质量分数18%计,其旋流萃取机的溶剂出口碱质量分数仅8.2μg/g。实际过程中溶剂和碱液在分层较好的情况下,碱分离罐剂碱出口碱质量分数不到1%,使出装置的溶剂汽油指标达到预期要求。The process of liquefied petroleum gas sweetening for a 1.2 MM TPY delayed coking unit is introduced. In this process, fiber membrane reaction technology is adopted. The causes of a large amount car- ryover of liquid caustic in solvent gasoline in solvent reverse extraction are analyzed, and it is decided to re- vamp the oxidation tower and alkali separation tank in alkali regeneration section. At the same time, the sol- vent gasoline washing process is added, which adopts vortex extraction separation process to separate solvent gasoline from water. At the maximum 18% alkali in solvent, the alkali at the outlet of alkali separator is less than 1.0 %. The solvent gasoline from the unit meet the required specifications.

关 键 词：纤维液膜反应技术 烟囱式塔盘 剂碱分离罐 油碱分离 水洗 

分 类 号：TE624.55[石油与天然气工程—油气加工工程] TE96