应用激光焊接板换回收PX装置低温热  

Application of Laser Welded Plate Heat Exchanger for Recovering Low-temperature Heat in PX Unit

作　　者：戚元庆 杨慧昌 

机构地区：[1]镇海石化工程股份有限公司,浙江宁波315042

出　　处：《广州化工》2016年第9期163-164,205,共3页GuangZhou Chemical Industry

摘　　要：在PX装置重整油分馏塔和脱庚烷塔的塔顶应用激光焊接板式换热器,分别与脱盐水和除氧水换热,回收塔顶气的冷凝潜热。加热后的脱盐水进热工除氧器,可以节约除氧器的蒸汽用量,加热后的除氧水可以多发低压蒸汽。本文为PX装置低温热回收利用开启了新的途径,并为老装置改造提供了可行的工程解决方案。For recovering the latent heat of condensation of top gas in PX unit , top gas of CCR oil fractionator exchanged heat with desalination water , and top gas of heptane off column exchanged heat with deoxygenated water by applying laser welded plate heat exchanger , respectively.The heated desalination water entered into the low pressure deaerator , which can reduce the steam consumption of deaerator .Besides , the heated deoxygenated water can be utilized to produce more low pressure steam .A new way to recover and utilize low temperature heat in PX unit was carried out and a viable engineering solution in revamping of old units was provided .

关 键 词：PX装置 低温热 回收 激光焊接板式换热器 

分 类 号：TE08[石油与天然气工程]