文章摘要
李婷,李贻青,王冬萍,杨敏博,冯霄.己烷溶剂回收流程精馏塔系热集成[J].,2019,59(3):232-238
己烷溶剂回收流程精馏塔系热集成
Heat integration of distillation column system in hexane solvent recovery process
  
DOI:10.7511/dllgxb201903002
中文关键词: 精馏塔系  冷、热公用工程  热集成  己烷溶剂回收流程
英文关键词: distillation column system  hot utility and cold utility  heat integration  hexane solvent recovery process
基金项目:国家自然科学基金资助项目(21736008).
作者单位
李婷,李贻青,王冬萍,杨敏博,冯霄  
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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.为此对其采用精馏塔系热集成,用某一个精馏塔温度较高的塔顶物流来加热另一个精馏塔温度较低的塔底物流,可以实现能量的节约.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21.19%的冷却公用工程和19.31%的加热公用工程.
英文摘要:
      The hexane solvent recovery process which consists of six distillation columns is to recover and refine 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 one column to heat the bottom stream of another column, is an effective approach to improve the energy efficiency. The heat integration matrix method is used 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 cold utility and 19.31% of the hot utility.
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