摘要
针对以重质直馏柴油为导热油的250 kt/a半再生催化重整装置在运行中存在的传热效率低、热稳定性差、能耗高等问题,选用合成型HL-320导热油替代原有热介质进行改进。结果表明:在催化重整四合一反应加热炉操作条件不变的前提下,与重质直馏柴油相比,使用HL-320导热油后对流段出口温度提高了25℃。在重整装置分馏系统操作参数一致的条件下,使用HL-320导热油后,排烟温度降低了16℃,重整四合一反应加热炉热效率提高了0.8个百分点。根据分馏系统的实际运行情况,HL-320导热油由对流段所取的热量能够满足系统所需,当停用热载体加热炉后,可节约瓦斯200 m^3/h,年增经济效益达250余万元。
Aiming at the problems such as low heat transfer efficiency,poor thermal stability and high energy consumption in the operation of 250 kt/a semi-regenerative catalytic reforming unit with heavy straight-run diesel as heat conducting oil,synthetic HL-320 heat conducting oil was selected to replace the heavy straight-run diesel for improvement. The results showed that on the premise of unchanged operating conditions of catalytic reforming unit quadruple reaction heating furnace,compared with heavy straight-run diesel oil, the convection section outlet temperature of HL-320 heat conducting oil increased by 25 ℃,which showed better heat transfer performance. Also the temperature of exhaust gas reduced by 16 ℃,and the thermal efficiency of heating furnace increased by 0.8 percentage points under the same operating parameters of fractionation system of reforming unit.According to the actual operation of fractionation system,the heat taken from convection section by HL-320 heat conducting oil could meet the needs of the system.After shutting down the heating furnace of heat carrier system,the gas could be saved 200 m^3/h,and annual economic benefit was more than 2.5 million yuan.
作者
刘亚利
徐洪君
LIU Ya-li;XU Hong-jun(Piping Department of Petrochemical Engineering Co Ltd,CNOOC,Qingdao 266100,China;Refining Department No 3 of Qingdao Petrochemical Co Ltd,SINOPEC,Qingdao 266041,China)
出处
《石化技术与应用》
CAS
2019年第6期402-405,共4页
Petrochemical Technology & Application
关键词
催化重整装置
热载体系统
重质直馏柴油
HL-320导热油
加热炉
热效率
catalytic reforming unit
heat carrier system
heavy straight-run diesel
HL-320 heat conducting oil
heating furnace
thermal efficiency
