煤和焦炉气联供联产烯烃和电力过程创新和集成优化

项目名称： 煤和焦炉气联供联产烯烃和电力过程创新和集成优化

项目编号： No.21306056

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 化学工业

项目作者： 杨思宇

作者单位： 华南理工大学

项目金额： 25万元

中文摘要： 烯烃生产绝大部分依靠石油裂解，煤炭作为石油替补资源可以通过气化合成气来生产烯烃。由于煤炭价格优势使煤制烯烃比油制烯烃更具经济潜力，但是煤制烯烃从资源/能源利用效率和环境影响角度又存在问题。针对这些问题，研究开发煤联供其它原料实现资源互补，可以大幅度提高资源/能源效率和降低环境污染。本项目提出利用焦炉气的富氢气体与煤气化后合成气进行资源互补，利用CH4/CO2重整和CO2回收气化技术来降低CO2排放和提高合成气的产量，利用联产电力减少自备电厂供能，研究通过技术和经济分析，确定不同关键参数对系统的影响和它们之间的相互制约关系，最后将全生命周期环境分析与多目标优化结合，权衡资源/能源效率，经济效益和环境影响找出集成优化方案，从而实现资源能源的高效利用并降低温室气体排放。

中文关键词： 联供联产；集成优化；全生命周期分析；CH4/CO2重整；CO2回收气化

英文摘要： The production of olefins highly depends on oil cracking. Coal is the major alternative used to produce olefins through coal gasification techniques. Because of low price of coal, coal-based olefins are more competitive than oil-based olefins from economic point of view. However, coal-based olefins production processes usually suffer from low resource and energy utilization efficiency and high environmental impact. An efficient method is to use coal and coke oven gas together as feedstock, in order for resource complementary. This project is mainly to propose a co-production process of hybrid coal and coke oven gas to olefins and electricity. CH4/CO2 reforming reaction and CO2 recycle as the gasification agent are used to reduce CO2 emission and increase productivity of syngas. Basic techno-economic analysis will be conducted to explore the effect of key factors and their mutual relationship. The process is finally optimized by multi-objective optimisation integrated with life cycle assessment. The best tradeoff is explored by comprehensively considering energy/resource efficiency, economic benefit, and environmental impact.

英文关键词： co-feed and co-production systems；process integration；life cycle assessment；CH4/CO2 reforming；CO2 recycled gasification