单塔塔顶循环丙烷回收工艺特性与能耗评价
Characteristics and energy consumption evaluation of propane recovery process from single-tower top cycle
张伟哲1
作者信息
摘要
为改善现场DHX丙烷回收流程产品收率低、能耗高的缺陷,将原重接触塔和脱乙烷塔合并为单塔,将塔分为吸收段和分馏段,从中引出侧线实现总能耗降低和热集成度的提高,形成SCORE丙烷回收流程.通过单因素模拟实验,分析了脱乙烷塔塔压、侧线抽出液相流量、塔顶回流比、原料气分流比对丙烷收率和总能耗的影响,考察了不同气质组成对工艺的适应性,并对换热网络进行改进.流程改进后,工艺总能耗从 28 172 kW降至 25 476 kW,能耗降幅 9.56%,节能效果显著.
Abstract
In order to improve the defects of low yield and high energy consumption in DHX pro-pane recovery process,the original heavy contact tower and deethylene tower are combined into a sin-gle tower.The tower was divided into absorption section and fractionation section,from which a sideline was drawn to realize a reduction in total energy consumption and increase in heat integration to form the SCORE propane recovery processthermal.Through the single factor simulation experiment,the influences of deethylene tower pressure,the gas phase flow in the side line,the top reflux ratio,raw gas split ratio on the propane yield and the total energy consumption were analyzed.After the pro-cess was improved,the total energy consumption of process was reduced from 28 172 kW to 25 476 kW,and the energy consumption was reduced by 9.56%,which makes energy conservation effect remark-able.
关键词
SCORE工艺/单塔流程/丙烷收率/总能耗Key words
SCORE process/single tower process/propane yield/total energy consumption引用本文复制引用
出版年
2024
NETL
NSTL
万方数据