夹点理论及其在换热网络中的应用

辽宁石油化工大学学报 ›› 2005, Vol. 25 ›› Issue (2): 54-58.

夹点理论及其在换热网络中的应用

王利文¹, 陈保东¹, 王利权² , 王平仪¹

1 .辽宁石油化工大学机械工程学院, 辽宁抚顺113001 ;
2 .贵州工业大学, 贵州贵阳550000

收稿日期:2004-10-19 出版日期:2005-06-20 发布日期:2017-04-18
作者简介:王利文(1978 -), 男(满), 辽宁抚顺市, 在读硕士。

Pinch Point Theory and Application in the Heat Exchange Network

1.School of Mechanical Engineering , Liaoning University of Petroleum & Chemical Technology ,Fushun Liaoning 113001, P .R .China ;
2 .Guiz hou University of Technology , Guiy ang Guizhou 550000, P .R .China

Received:2004-10-19 Published:2005-06-20 Online:2017-04-18

摘要/Abstract

摘要： 换热网络优化综合目前主要有3 种方法:试探法, 夹点技术, 数学规划法。但在实际应用中, 夹点技术证明有效并已取得显著经济效益。给出了夹点技术中几个关键问题的求解方法以及如何准确快捷的找出换热网络中的夹点。应用这些方法可以有效的进行换热网络的最优设计, 做到最大限度的利用能量。针对生产和实践中遇到的特殊情况给出了解决办法, 并用一个具体实例说明改造后的传热效果。在分析了夹点技术的理论基础和热力学原理的基础上, 提出了夹点技术的理论局限性, 及其相关的原因及克服办法。

关键词: 夹点, 　换热网络, 　面积目标, 　催化裂化

Abstract:

　 At present , there are three main methods in optimum of the heat exchange network :heuristic method , pinch point technology , mathematical programming .In the engineering application, among all methods the pinch point techno logy has been proved to be the mo re efficient and obtain obvious economic benefits.The methods how to solve key problems of pinch point technology and point out the pinch point of the heat exchange network accurately and quickly w ere given , which helped makeeffectively optimum design of heat exchange network and make best use of energy .The solutions to the exceptional cases in the engineering practice were put forward and an example was given.It demonstrated the obvious results of heat transfer after rebuilding .On the basis of analyzing theory foundation and thermodynamic principle , theory limitations of pinch point technology were put forth,corresponding causes explained, and solution methods offered.

Key words: 　Pinchpoint , 　Heat exchange network , 　Area goal, 　Catalyzing and cracking

王利文,陈保东, 王利权,王平仪. 夹点理论及其在换热网络中的应用[J]. 辽宁石油化工大学学报, 2005, 25(2): 54-58.

WANG Li -w en, CHEN Bao -dong,et al. Pinch Point Theory and Application in the Heat Exchange Network[J]. Journal of Liaoning Petrochemical University, 2005, 25(2): 54-58.

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