文章摘要
己烷溶剂回收过程的精馏塔系热集成
Heat integration of the distillation column system in a hexane solvent recovery process
投稿时间:2018-09-13  修订日期:2018-09-17
DOI:
中文关键词: 精馏塔系  冷、热公用工程  热集成  己烷溶剂回收过程
英文关键词: Distillation column system  Hot utility and cold utility  Heat integration  Hexane solvent recovery process
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
李婷 西安交通大学 化学工程与技术学院 932284082@qq.com 
李贻青 北京燕山石化橡塑化工有限责任公司  
王冬萍 北京燕山石化橡塑化工有限责任公司  
杨敏博 西安交通大学 化学工程与技术学院  
冯霄 西安交通大学 化学工程与技术学院 xfeng@xjtu.edu.cn 
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中文摘要:
      己烷溶剂回收流程共包含6个精馏塔,用以分离粗溶剂中的己烷和丁二烯,并进行精制,整个流程蒸汽消耗量大。对其采用精馏塔系热集成,用某一个精馏塔的温度较高的塔顶物流,来加热另一个精馏塔的温度较低的塔底物流,可以实现能量的节约。本文采用热集成矩阵法,通过直接热集成和调压热集成,对己烷溶剂回收流程提出了7个热集成方案。通过比较分析,确定了3个热集成方案,可节约加热公用工程用量的21.19%,同时可节约冷却公用工程用量的19.31%。
英文摘要:
      The hexane solvent recovery process that consists of 6 distillation columns is to recover hexane and butadiene from the crude solvent. This process has a considerable steam consumption. Heat integration of distillation columns, namely, using the overhead stream of a column to heat the bottom stream of another column, is an effective approach to improve the energy efficiency. This work uses the heat integration matrix method to analyze opportunities of heat integration of distillation columns in the hexane solvent recovery process, including both direct integration and integration after pressure adjustment. Seven heat integration schemes are proposed. Through a comparative analysis, three schemes are finally determined, which could save up to 21.19% of the hot utility and 19.31% of the cold utility.
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