裂解炉稀释蒸汽备用节能减排分析与优化  

Analysis and Optimization of Energy Saving and Emission Reduction of Diluted Steam Reserved in Cracking Furnace

作　　者：蒋晓勇 李中华 王金柱 任崇欣 刘天勇 Jiang Xiaoyong;Li Zhonghua;Wang Jinzhu;Ren Chongxin;Liu Tianyong(PetroChina Dushanzi Petrochemical Company,Dushanzi,Xinjiang,833699)

机构地区：[1]中国石油天然气股份有限公司独山子石化分公司,新疆独山子833699

出　　处：《石油化工安全环保技术》2023年第6期37-41,I0003,共6页Petrochemical Safety and Environmental Protection Technology

摘　　要：独山子石化公司22万t乙烯装置裂解炉采用美国LUMMUS技术,2002年7月开始由14万t扩建至22万t并投产至今。乙烯装置共7台裂解炉,正常生产运行时,6台裂解炉为正常运行状态,1台裂解炉为清焦风备用状态,备用裂解炉清焦风全部放空。装置目前急冷水塔塔釜温度偏低,塔釜提供加热热量不足,备用裂解炉长期清焦风高备对炉管造成高温氧腐蚀的现象。裂解装置提出将清焦风备用裂解炉进行稀释蒸汽备用,并将备用炉切入急冷系统,回收一部分热量的同时降低了裂解炉清焦风高备时炉管高温氧腐蚀的风险,还减少了高温烧焦气排放量。The cracking furnace of the 220 kt/a ethylene plant of Dushanzi Petrochemical Company has adopted LUMMUS technology from the United States.It has been expanded from 140 kt/a to 220 kt/a since July 2002 and has been in production since then.There are altogether seven cracking furnaces in the ethylene plant.During normal production and operation,six cracking furnaces are in normal operation state,and one cracking furnace is in decoking air standby state,and the decoking air in the standby cracking furnace is completely empty.At present,the tower kettle temperature of the quench water tower is low;the tower kettle provides insufficient heat for heating,and the high temperature of the decoking air in the standby cracking furnace causes high-temperature oxygen corrosion to the furnace tube.In the cracking device,it is proposed to dilute steam in the decoking air standby cracking furnace,and connect the standby cracking furnace with the quench system to recover part of the heat and reduce the risk of high-temperature oxygen corrosion in the furnace tube when the decoking air is in high-temperature standby state,and reduce the emission of high-temperature coke burning gas.

关 键 词：裂解炉高备 清焦风 高温氧腐蚀 综合能耗 

分 类 号：TQ221.211[化学工程—有机化工]