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Indirect heat integration across plants using hot water circles

摘要:Total site heat integration (TSHI) provides more opportunities for energy saving in industry clusters. Some design methods including direct integration using process streams and indirect integration using intermediate-fluid circuits, i.e., steam, dowtherms and hot water, have been proposed during last few decades. Indirect heat integration is preferred when the heat sources and sinks are separated in independent plants with rather long distance. This improves energy efficiency by adaption of intermediate fluid circle which acts as a utility provider for plants in a symbiotic network. However, there are some significant factors ignored in conventional TSHI, i.e. the investment of pipeline, cost of pumping and heat loss. These factors simultaneously determine the possibility and performance of heat integration. This work presents a new methodology for indirect heat integration in low temperature range using hot water circuit as intermediate-fluid medium. The new methodology enables the targeting of indirect heat integration across plants considering the factors mentioned earlier. An MINLP model with economic objective is established and solved. The optimization results give the mass flow rate of intermediate-fluid, diameter of pipeline, the temperature of the circuits and the matches of heat exchanger networks (HENS) automatically. Finally, the application of this proposed methodology is illustrated with a case study. (C) 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

关键字:Indirect integration Intermediate-fluid Across plants Pipeline Optimization

ISSN号:1004-9541

卷、期、页:卷: 23 期: 6 页: 992-997

发表日期:2015-06-01

期刊分区(SCI为中科院分区):四区

收录情况:SCIE(科学引文索引网络版),CSCD(中国科技引文期刊)(核心),CSTPCD(中国科技核心期刊)(统计源期刊),ESI(基本科学指标数据库),EI(工程索引)

发表期刊名称:Chinese Journal of Chemical Engineering

通讯作者:常承林

第一作者:王彧斐,冯霄

论文类型:期刊论文

论文概要:常承林,王彧斐,冯霄,Indirect heat integration across plants using hot water circles,Chinese Journal of Chemical Engineering,2015,卷: 23 期: 6 页: 992-997

论文题目:Indirect heat integration across plants using hot water circles

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