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›› 2008, Vol. 8 ›› Issue (2): 321-326.

• 系统与集成 • 上一篇    下一篇

元素流分析在生态工业规划中的应用

郭颖 胡山鹰 陈定江   

  1. 清华大学化工系生态工业中心 清华大学化工系,过程工程与生态工业研究中心 清华大学生态工业研究中心
  • 收稿日期:2007-07-20 修回日期:2007-11-20 出版日期:2008-04-20 发布日期:2008-04-20
  • 通讯作者: 胡山鹰

Application of Substance Flow Analysis in Eco-industrial Park Planning

HU Shan-ying CHEN Ding-jiang   

  1. Dept. Chem. Eng.,Tsinghua Univ. Dept. Chem. Eng., Tsinghua Univ.
  • Received:2007-07-20 Revised:2007-11-20 Online:2008-04-20 Published:2008-04-20
  • Contact: HU Shan-ying

摘要: 以某天然气化工工业园为例,对其生产过程中的主要元素C进行代谢分析,C元素利用效率为65.1%,元素损失主要发生在合成氨造气和甲醇造气工段. 针对元素利用率较低的工艺环节,分析了资源浪费原因和节约潜力. 以分析结果为依据,结合企业生态工业发展规划提出改进方案,包括:在过程间建立物质耦合关系,通过利用副产物或废弃物减少原料的使用;改进造气工艺,提高C元素的有效利用率. 对改进方案的C元素流分析表明,C元素利用率提高到88.1%,同时CO2排放被有效削减.

关键词: 元素流分析, 生态工业园规划, 天然气, 元素利用效率

Abstract: Carbon element flows in a natural gas chemical industrial park are analyzed in detail and the utilization efficiency of element C is 65.1%. Most loss of element C happens in ammonia syngas production and methanol syngas production. To the processes with low efficiency of element C, causes of resource wasting and potentials of resource saving are identified. Based on the result and combining the planning of an eco-industrial park, a retrofit scheme is proposed. Two measures are adopted, building material flow coupling between processes, which may reduce raw material consumption by using wastes, and improving syngas production technology to raise element C utilization efficiency. The analysis result to element C flows of the retrofit scheme shows that element C utilization efficiency is much increased up to 88.1%, and CO2 emission is obviously reduced.

Key words: substance flow analysis, eco-industrial park planning, natural gas, substance efficiency

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