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Multi-period design of heat exchanger networks

机译：多阶段的换热器网络的设计

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摘要

Heat exchanger networks are an integral part of chemical processes as they recover available heat and reduce utility consumption, thereby improving the overall economics of an industrial plant. This paper focuses on heat exchanger network design for multi-period operation wherein the operating conditions of a process may vary with time. A typical example is the hydrotreating process in petroleum refineries where the operators increase reactor temperature to compensate for catalyst deactivation. Superstructure based multi-period models for heat exchanger network design have been proposed previously employing deterministic optimisation algorithms, e.g. (Aaltola, 2002; Verheyen and Zhang, 2006). Stochastic optimisation algorithms have also been applied for the design of flexible heat exchanger networks recently (Ma et al., 2007, 2008). The present work develops an optimisation approach using simulated annealing for design of heat exchanger networks for multi-period operation. A comparison of the new optimisation approach with previous deterministic optimisation based design approaches is presented to illustrate the utilisation of simulated annealing in design of optimal heat exchanger network configurations for multi-period operation.
机译：换热器网络是不可或缺的一部分热化学过程中可用,减少动力消耗,从而改善工业的整体经济植物。本文着重于换热器网络其中设计多阶段的操作操作条件的过程可能有所不同时间。过程在石油精炼厂运营商增加反应堆温度弥补催化剂失活。上层建筑建立多阶段的热模型换热器网络设计以前采用确定性优化算法,例如(Aaltola, 2002;张,2006)。也已申请灵活的设计吗换热器网络最近(马等。2007年,2008年)。使用模拟退火优化方法换热器网络的设计多阶段的操作。与先前的确定性优化方法提出了基于优化的设计方法为了说明模拟的利用率退火优化换热器的设计网络配置的多阶段操作。

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