不同含水率下的生活垃圾气化特性模拟
Simulation of gasification characteristics from municipal solid waste under different moisture content
陈巨辉 1王振名 1李丹 1王柏森 2ZHURAVKOV Michael 3SIARHEI Lapatsin 3于广滨4
作者信息
- 1. 哈尔滨理工大学机械动力工程学院,黑龙江哈尔滨 150080
- 2. 北京清新环境技术股份有限公司,北京 100142
- 3. 海空装备齿轮传动国际合作黑龙江省重点实验室,黑龙江哈尔滨 150001;哈尔滨工业大学机电工程学院,黑龙江哈尔滨 150001
- 4. 哈尔滨工业大学机电工程学院,黑龙江哈尔滨 150001
- 折叠
摘要
我国不同地区的垃圾含水率有很大差异,为了探究垃圾含水率对气化特性的影响,更进一步地实现生活垃圾资源化利用,本文基于Aspen Plus建立了垃圾气化的工艺流程模型,分析了不同含水率下的温度对气化合成气组分、碳转化率(CCE)、低位热值(LHV)、气体产率的影响,气化温度提高促进CCE、LHV先降低后升高.结果表明升温和增加含水率可提高CCE、降低LHV,温度小于650℃时,增加含水率可促进气体产率,温度大于650℃时,增加含水率会降低气体产率;通过诸多气化指标得出垃圾含水率为25%、气化温度为850℃时为最优工况,在此基础上,40.63%的产气燃烧比例放热可以为干燥、热解、气化阶段提供热量,实现系统的热量自给.当气化温度和产气燃烧比例不变时,随着垃圾含水率的提高,气化系统对外界放出的热量先增加后减小.
Abstract
The moisture content of garbage in different regions of China is very different.This study explored the influence of moisture content on gasification characteristics of municipal solid waste(MSW),aiming to further realize its resource utilization.Based on Aspen Plus,a process model of waste gasification was established,and the effects of temperature on the composition of gasification synthesis gas,carbon conversion(CCE),low calorific value(LHV),and gas yield under different moisture content were analyzed.Results showed that the increase of gasification temperature promoted the first decrease and then increase of both CCE and LHV.Raised temperature and increased moisture content was observed to promote CCE while reducing LHV.Below 650℃,the increase of moisture content would promote the gas yield.However,above 650℃,it showed the opposite effect.A comprehensive analysis of gasification indexes revealed that the optimal condition was obtained with a moisture content of 25%and a gasification temperature of 850℃.On this basis,40.63%combustion of gas production could provide heat for drying,pyrolysis and gasification stages to achieve heat self-sufficiency of the system.Moreover,when the gasification temperature and combustion ratio of gas production remained unchanged,the heat released by the gasification system increased firstly and then decreased as the waste moisture content rose.
关键词
气化模拟/含水率/热平衡/Aspen/Plus/生活垃圾Key words
gasification simulation/moisture content/heat balance/Aspen Plus/municipal solid waste引用本文复制引用
基金项目
黑龙江省重点研发项目(GA21A301)
黑龙江省揭榜挂帅项目(2023ZXJ04A02)
黑龙江省自然基金研究团队项目(TD2023E002)
出版年
2024
国家科技期刊平台
NSTL
万方数据