80万吨/年乙烯装置急冷油系统汽油分馏塔节能研究  

The energy research of gasoline fractionator of quench system in a 800 kt /a ethylene plant

作　　者：赵浩辰[1] 夏力[1] 项曙光[1] 

机构地区：[1]青岛科技大学过程系统工程研究所,山东青岛266042

出　　处：《计算机与应用化学》2015年第6期697-701,共5页Computers and Applied Chemistry

基　　金：国家自然科学基金资助项目(21406124)

摘　　要：为了降低乙烯装置的能耗,应该尽可能的回收裂解气中的能量。利用流程模拟软件Aspen plus对80万吨/年乙烯装置的急冷油系统建立模型,并将模拟值与设计值和实际值进行对比,模拟结果与设计值和实际值吻合的较好,误差范围在5%以内。为进一步对急冷油系统进行节能研究,将塔顶去往急冷水系统的低温位热量,转移为较高温位热量,提出在汽油分馏塔上部增设盘油循环系统,在汽油分馏塔的第16块塔板采出142℃的液相盘油908 t·h-1,经与工艺水用户换热并冷却至125℃后,返回汽油分馏塔第8块塔板,改造后的工艺为乙烯装置节省的蒸汽量和增加的稀释蒸汽量总和达23.73 t·h-1。Quench system is an important part of ethylene plant, its performance is reducing the temperature of pyrolysis gas and recovery energy, gasoline fractionator is the most important tower of quench system, it is also a difficult tower in technology. In this article, simulated a system in ethylene plant, and compared with actual condition and design conditions, ensure the feasibility of the simulation, make an energy research about the gasoline fractionator of quench system in ethylene plant, proposed the creation of the plate oil circulation system, and determined the program of the plate oil system, reduced energy consumption in ethylene plant.

关 键 词：乙烯装置 急冷油系统 流程模拟 节能研究 

分 类 号：O642.42[理学—物理化学]