加氢裂化装置结垢分析与防治措施  

Analysis and Prevention of the Scaling in Hydrocracking Units

作　　者：郝文月[1] 陈勇 刘昶[1] 曹均丰[1] 王凤来[1] 杜艳泽[1] 关明华[1] 

机构地区：[1]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113001 [2]中国石油青海油田格尔木炼油厂,青海格尔木816000

出　　处：《当代化工》2016年第12期2779-2782,共4页Contemporary Chemical Industry

摘　　要：某石化公司加氢裂化装置脱丁烷塔及热高分换热器发生结垢导致非计划停工。取垢样通过XRD、SEM-EDS、XRF、FT-IR分析发现,脱丁烷塔底处的泵、加热炉以及管线中垢样成分主要为Fe S;而热高分换热器壳程及副线中垢样成分以氯化铵为主,另含有少量Fe S及含Gr化合物。对此,建议炼厂升级装置材质,以减少装置腐蚀导致的Fe S结垢,严格控制Cl-含量,提高换热器注水频率或使用阻垢剂以防止换热器内NH4Cl结垢。The scaling of debutanizer and exchanger in the hydrocracking unit in a refinery led to unplanned shutdown. The scale samples were analyzed by XRD, SEM-EDS, XRF, FT-IR etc. Main component in the scale samples from the furnace and the pipes is Fe S, while the scale samples from the heat exchanger are mainly composed of NH4 Cl,little Fe S and Gr compounds. The refinery is suggested to upgrade the unit materials to reduce the probability of corrosion. Cl- should be controlled strictly and the water flooding frequency should be increased to protect the exchanger from NH4 Cl scaling.

关 键 词：加氢裂化 脱丁烷塔 结垢 腐蚀 

分 类 号：TE624[石油与天然气工程—油气加工工程]