摘要
介绍中国石油化工股份有限公司洛阳分公司芳烃联合装置异构化单元的工艺流程及能耗情况,其中燃料气能耗为18 743.12 MJ/h,占芳烃异构化单元总能耗的55%。认为目前反应进出料列管式换热器换热效果差、反应物料进加热炉温度低。提出将原列管式换热器更换为高效板壳式换热器,并采用Aspen Plus模拟软件对高效板壳式换热器的节能效果进行模拟核算,核算结果显示:反应进料进反应加热炉的温度提高了32.9℃,加热炉热负荷降低了11 537.54 MJ/h。按芳烃联合装置"三苯"产量平均42 t/h计算,装置单位综合能耗降低274.65 MJ/t。
The process flow and energy requirement of isomerization unit of the aromatics complex in SIN- OPEC Luoyang Company were studied. It was concluded that the heat exchange efficiency of the existing tubu- lar heat exchangers for the reactor feed and reactor effluent was poor, and the inlet temperature of feed to the furnace is low. It was recommended to replace the existing tubular heat exchangers with plate-shell heat ex- changers. The calculations of energy saving of high-efficiency plate-shell heat exchangers by Aspen Plus soft- ware show that, the replacement of existing tubular heat exchangers with high-efficiency plate-shell heat ex- changers can elevate the temperature of reactor feed to reactor furnace by 32.88 ℃ and reduce furnace thermal duty by 11 537.54 MJ/h. When the aromatics complex is operated at a capacity of 42 t/h of BTX （ benzene, toluene and xylene） products, the energy saving of the unit is 274.65 MJ/t of products.
出处
《炼油技术与工程》
CAS
2013年第4期41-43,共3页
Petroleum Refinery Engineering
关键词
芳烃异构化
板壳式换热器
方案
节能
aromatics isomerization, plate-shell heat exchanger, process scheme, energy saving
