乙烷裂解炉及急冷油减黏系统改造

摘要

The new and old cracking units of Daqing Petrochemical Company was revamped by adding a heavy fuel oil stripper and modifying a cracking furnace into a ethane and propane cyclic pyrolysis furnace (ethane furnace in short). The results showed that after revamping the ethane furnace , the exhaust gas temperature decreased to 108 °C. , the heat efficiency of the furnace reached 94% and the conversion of ethane increased by10 precent points. Meanwhile, by revamping the quench system, the bottom temperature of the oil quench tower in the old pyrolysis unit increased by lit, the viscosity control oil in the new and old unit was saved by 96 t/d and the dilution steam increased by 10 t/h.%采用新增1台重燃料油汽提塔,并将1台裂解炉改造为循环乙烷与丙烷裂解炉(以下简称乙烷炉)措施,对中国石油大庆石化公司新老区裂解装置进行了改造.结果表明,通过对乙烷炉改造,排烟温度降至108℃,热效率达到94％,乙烷转化率提高了10个百分点.通过对急冷系统改造,老区急冷油减黏塔塔釜温度提高11℃,新老区可节约调质油96 t/d,多发生稀释蒸汽量10 t/h.