集成CO2高效利用的煤制乙二醇过程设计与系统分析

化工学报2019年第70卷第2期

,2019,70(2):772-779|https://www.360docs.net/doc/265862989.html, CIESC Journal

朱顺，郭琦，张大伟，杨庆春

（合肥工业大学化学与化工学院，安徽合肥230009）

摘要：为减少传统煤制乙二醇过程资源利用效率低和CO2排放量高等问题，提出了一种集成CO2高效利用的煤制乙二醇过程，并对其进行了全流程建模及系统分析。与传统过程不同，新过程利用焦炉气来提高其资源利用率和能量效率，集成甲烷干重整与湿重整技术降低CO2排放。在全流程建模的基础之上，对新工艺的关键操作参数进行了分析与优化。结果表明，焦炉气的最佳进料比和甲烷蒸汽重整反应的分配比为0.68和0.74。与传统过程相比，新工艺的CO2排放降低了94.05％，同时?效率提高了15.17％。

关键词：煤制乙二醇；焦炉气；二氧化碳；优化设计；?

中图分类号：TQ536.1文献标志码：A文章编号：0438?1157（2019）02-0772-08 Conceptual design and system analysis coal to ethylene glycol process integrated

with efficient utilization of CO

ZHU Shun,GUO Qi,ZHANG Dawei,YANG Qingchun

(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei230009,Anhui,China)

Abstract:In the momentum of reducing CO2emission of coal to ethylene glycol process,a novel carbon dioxide utilized coal to ethylene glycol(CUCtEG)process is proposed,simulated,and optimized.The novel process is assisted with coke oven gas to enhance resource and energy efficiencies as well as reduce CO2emission by integrating with dry/steam-mixed methane reforming technologies.Based on the rigorous steady-state simulation of the process,key operational parameters of the novel process are investigated and optimized.The optimal feed ratio of coke oven gas to coal and the split ratio of that for steam methane reforming reaction https://www.360docs.net/doc/265862989.html,pared with the traditional process,the CO2emission of the new process is reduced by94.05%,and the exergy efficiency is increased by15.17%.

Key words:coal to ethylene glycol;coke oven gas;carbon dioxide;optimal design;exergy

引言

乙二醇(ethylene glycol,EG)作为一种重要的有机化工原料，广泛地应用于生产聚酯、防冻液、表面活性剂、润滑剂、增塑剂、化妆品等产品[1]。随着我国聚酯工业的迅速发展，国内市场对乙二醇的需求量持续增长。尽管近年来我国乙二醇生产能力平均每年以10%左右的速度增长，但是目前国内乙二

研究论文DOI：10.11949/j.issn.0438?1157.20181044

收稿日期：2018-09-17修回日期：2018-10-16

通信作者：杨庆春（1990—），男，博士，讲师，ceqcyang@https://www.360docs.net/doc/265862989.html,

第一作者：朱顺（1995—），男，硕士研究生，zhushun0825@https://www.360docs.net/doc/265862989.html,

基金项目：中央高校基本科研业务费专项资金(JZ2018HGTA0278)；国家自然科学基金项目（51472070）

引用本文：朱顺,郭琦,张大伟,杨庆春.集成CO2高效利用的煤制乙二醇过程设计与系统分析[J].化工学报,2019,70(2):772-779

Citation：ZHU Shun,GUO Qi,ZHANG Dawei,YANG Qingchun.Conceptual design and system analysis coal to ethylene glycol process integrated with efficient utilization of CO2[J].CIESC Journal,2019,70(2):772-779

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