黑液蒸发过程能量系统模拟及其节能优化应用  

Energy system simulation of black liquor evaporation and its energy-saving optimization application

作　　者：张彦慧[1] 李继庚[1] 刘焕彬[1] 郑飞 林进忠 陈德强 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]南纸股份有限公司,福建南平353000

出　　处：《计算机与应用化学》2011年第1期125-128,共4页Computers and Applied Chemistry

基　　金：福建省科技计划项目-化学浆黑液蒸发过程节能关键技术的开发与应用(2009H0014)

摘　　要：黑液蒸发浓缩过程是制浆造纸厂主要能耗工序之一,约占总能耗的24%～30%。为缩小我国黑液蒸发过程能耗与国际先进水平的差距,本文针对具体示例展开了节能降耗的研究分析。文中应用WinGEMS模拟软件,蒸汽效率、(?)分析为分析方法,以黑液蒸发工厂实际过程为案件,进行了蒸发过程节能优化前后的模拟研究。结果表明应用WinGEMS软件能方便准确地进行黑液蒸发过程的能量和物料流的模拟和优化设计;文内提出的蒸发过程节能优化方案,在保证安全生产的同时,蒸汽效率、(?)能利用率皆有提高,提高百分点分别为12%、14%,且新蒸汽用量比优化前降低了23%,出效黑液浓度比优化前提高了4.2%。示例的成功实施,对相关产业的节能项目提供重要的指导及借鉴意义。As an energy intensive process, MEE consumes about 24%-30% of its total energy in a pulp and paper mill. Since domestic enterprises still keep a certain gap from overseas large companies, minimizing consumption of energy is an important goal for this sector. In this paper, WinGEMS simulation software was used to simulate the evaporation process carried out before and after the energy-saving optimization according to an actual process of black liquor evaporation in a company with the help of steam economy and exergy analysis. The results showed that WinGEMS software can easily and accurately simulate the energy system and material flow and optimize the evaporation process. The energy-saving optimization scheme of evaporation process showed in this paper indicates that, after optimization, not only steam economy and exergy ratio had raised to 12% and 14%, but also the consumption of live steam is 23% lower and the output black liquor concentration is 4.2% higher, while ensuring the safety of producing. The successful execution of the project provides useful guidance for other relevant enterprises.

关 键 词：模拟 优化设计 蒸发效率 [火用]分析 

分 类 号：TQ051[化学工程]