基于Aspen Plus的煤部分气化氢电联产系统模拟  

Simulation of hydrogen-electricity co-production systemof coal partial gasification based on Aspen Plus

作　　者：张泽祎 李照志 邵应娟[1] 钟文琪[1] Zhang Zeyi;Li Zhaozhi;Shao Yingjuan;Zhong Wenqi(Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学能源热转换及其过程测控教育部重点实验室,南京210096

出　　处：《东南大学学报（自然科学版）》2024年第2期475-486,共12页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(52276150)。

摘　　要：为了提高煤制氢系统的能源利用效率,减少碳排放,构建了4种以煤部分气化为基础的新型氢电联产系统.基于Aspen Plus软件,采用系统效率、制氢效率作为评价标准,对各系统进行模拟与对比分析.结果表明:存在不同氧煤比与碳转化率使得系统效率达到最高,系统1~4分别在碳转化率为60%、85%、65%、60%时达到最高系统效率;各系统效率与气化效率随着气化温度的提高,呈先迅速增长后趋于平稳趋势;各系统效率与气化效率随着气化压力的提高,呈先迅速减少后趋于平稳趋势;在氧煤比为0.33,气化压力为2 MPa,气化温度为1000℃工况下系统1~4效率分别为59.12%、66.13%、62.21%和58.57%;采用CO_(2)与O_(2)作为气化剂,且CO_(2)与O_(2)的质量比为4∶1的煤部分气化加压富氧燃烧循环系统(系统2)在各项标准下具有优势,为最佳氢电联产系统.To improve the energy efficiency of coal-based hydrogen production and reduce carbon emissions,four new hydrogen-electricity cogeneration systems based on coal partial gasification were constructed.The system efficiency and hydrogen production efficiency were used as evaluation criteria to simulate and compare the systems using Aspen Plus.The results show that there are different oxygen-coal ratios and carbon conversion rates to achieve the highest system efficiency.System 1 to 4 reach the highest system efficiency when the carbon conversion rate is 60%,85%,65%,and 60%,respectively.With the increase of gasification temperature,the efficiency and gasification efficiency of each system first increase rapidly and then tend to be stable.With the increase of gasification pressure,the efficiency and gasification efficiency of each system first decrease rapidly and then tend to be stable.When the oxygen-coal ratio is 0.33,the gasification pressure is 2 MPa,and the gasification temperature is 1000℃,the efficiency of system 1 to 4 is 59.12%,66.13%,62.21%and 58.57%,respectively.The coal partial gasification pressurized oxygen-enriched combustion cycle system(System 2),which uses CO_(2) and O_(2) as gasification agents,and with a mass ratio of CO_(2) to O_(2) of 4∶1,has advantages under various standards and is the best hydrogen-electricity cogeneration system.

关 键 词：煤炭部分气化 半焦加压富氧燃烧 系统建模 热力学分析 

分 类 号：TQ53[化学工程—煤化学工程]