Abstract Mixing two streams with different components and/or compositions could enhance heat recovery if they contain azeotrope-forming components. This study investigates the integration of Heat Exchanger Network (HEN) considering mixing and azeotrope formation. Two cold streams are mixed to form a minimum azeotropic mixture and vaporised. Variations in heat capacity flowrate, net heat flow, and Grand Composite Curve are analysed, and their quantitative relations and utility consumption are deduced. Principles behind mixing and azeotrope formation are clarified to enhance energy recovery. A styrene production process is studied using the proposed method. With steam condensate mixed with ethylbenzene and vaporised at the azeotropic composition, the minimum heating and cooling utility consumption can be reduced by 22.87% and 13.88%.

中文翻译：

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混合和共沸形成换热器网络的能量回收增强

摘要 如果两种具有不同组分和/或组成的流混合，如果它们含有共沸组分，则可以提高热回收率。本研究调查了考虑混合和共沸物形成的换热器网络 (HEN) 的集成。两股冷流混合形成最小的共沸混合物并蒸发。分析了热容流量、净热流量和大复合曲线的变化，并推导出了它们的数量关系和公用事业消耗。澄清混合和共沸物形成背后的原理以提高能量回收。使用所提出的方法研究了苯乙烯生产过程。蒸汽冷凝液与乙苯混合并在共沸组合物中蒸发，最小加热和冷却公用事业消耗可降低 22.87% 和 13.88%。