摘要
气体分馏装置脱戊烷塔系统自开工以来一直存在结焦严重的问题,多次被迫停工清焦。通过对结焦物化验,分析了脱戊烷塔系统结焦原因。为彻底解决结焦问题,可停开此系统。核算了停开脱戊烷塔系统带来的经济效益及对MTBE装置造成的经济损失。结果表明:在一定条件下,停开脱戊烷塔系统是可行的,该措施具有较大的经济效益。停开此系统后,MTBE装置的混合C4原料中C5含量可能随之增大,进而影响异丁烯转化率、催化剂寿命及工艺操作等,针对该影响提出了改进措施,即催化裂化装置和LPG精制装置优化操作、气体分馏装置和MTBE装置加强脱水操作。
The serious coking problem in depentanizer system in gas fractionation unit ever since its com- missioning has forced the unit to be shutdown for coke cleaning many times. The causes of coking of depen- tanizer tower system are analyzed through testing of the coke. To completely solve the eoking problem, depen- tanizer tower system can be shutdown. Then economic benefit of shutdown of depentanizer tower system and economic loss of MTBE unit are calculated in detail. The results show that the cutting off of depentanizer tower system is feasible under certain conditions and will offer a higher economic benefit. After shutdown of the de- pentanizer tower system, the content of C5 may increase in mixed C4s of MTBE unit, which will affect the con- version of isobutene, catalyst consumptions, process operation, etc. In view of these impacts, the correspond- ing improvement measures are recommended, such as operation optimization in catalytic cracking unit and liq- uefied gas refining unit and strengthened dehydration in MTBE unit.
出处
《炼油技术与工程》
CAS
2014年第1期30-33,共4页
Petroleum Refinery Engineering
关键词
气体分馏装置
脱戊烷塔
MTBE
结焦
gas fractionation unit, depentanizer tower, MTBE, coking
