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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Heat integration of a multi-product batch process by means of direct and indirect heat recovery using thermal energy storage
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Heat integration of a multi-product batch process by means of direct and indirect heat recovery using thermal energy storage

机译：通过使用热能存储通过直接和间接热回收来热集成多产品批量过程

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摘要

Process heat integration in batch processes is a complex problem given their time dependent behavior and need for thermal energy storage. In case of multi-product batch processes the complexity increases further. Due to its intricacy, the topic has so far been hardly addressed in literature. This article presents a practical case study on heat integration of such complex batch processes in a medium-sized European textile plant using pinch analysis. The maximum heat recovery potential during different time slices of a day is estimated at 21-43% of the heat demand of the company. The processes are first optimized for direct heat recovery and a heat exchanger network is recommended with a maximum recovery potential of 85 GJ per day. The residual process requirements are then analyzed for indirect heat recovery by means of thermal energy storage. A closed intermediate loop and heat storage system with four temperature levels is recommended with an additional recovery potential of 17 GJ per day. The proposed heat exchanger and storage designs are both found to be cost-effective with payback times ranging from 1 to 5 years. In spite of being technically rather demanding, more attention should be paid to thermal energy storage in batch processes since they are likely to offer more attractive additional energy saving potentials in industry. The approach provides an effective way of identifying practical solutions for heat integration in complex multi-product batch processes.
机译：批处理过程中的处理热集成是给出了它们的时间依赖行为和需要热能存储的复杂问题。在多产品批处理的情况下，复杂性进一步增加。由于其复杂性，这一主题迄今为止在文献中几乎没有解决。本文介绍了使用PINCH分析在中尺寸欧式纺织厂中这种复合批处理的热集成的实用案例研究。不同时间片的最大热回收潜力估计在公司热需求的21-43％。首先针对直接热回收优化该方法，建议热交换器网络，每天最大恢复电位为85 GJ。然后通过热能存储分析残余过程要求以进行间接热回收。建议使用具有四个温度水平的封闭的中间环和储热系统，每天额外的恢复电位为17 GJ。所提出的热交换器和存储设计都发现，在1至5年的回报时间内具有成本效益。尽管在技术上是苛刻的要求，但在批量流程中应更加关注热能储存，因为它们可能在工业中提供更具吸引力的额外节能潜力。该方法提供了识别复杂多产品批处理过程中热集成的实用解决方案的有效方法。

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