摘要
为加快城市污泥消纳,实现污泥的资源化利用,提出了一种污泥干燥热解及处理一体化系统。热解油及热解焦炭进行售卖处理,热解气体用来燃烧发电,并利用热解及燃烧过程中产生的高温气体对干燥过程进行供热,配备余热利用系统。在此基础上,对系统进行能量分析和经济性分析。计算结果表明,污泥干燥热解及处理一体化系统的能量效率为56.94%,投资回收期为13.32 a,净现值为1749.31万元。敏感性分析表明污泥干基低位发热量为9.52 MJ/kg时,系统净现值为零,系统在热解油售卖价格降低不超过25.20%或污泥处理补贴降低不超过38.46%时,仍保持盈利。
An integrated system of sludge drying pyrolysis and treatment was proposed to accelerate the elimination of urban sludge and realize the resourceful use of sludge.Pyrolysis oil and pyrolysis coke was sold and processed.Pyrolysis gas was used for combustion to generate electricity,and the high-temperature gas generated in the pyrolysis and combustion process was used to heat the drying process and equipped with a waste heat utilization system.On this basis,the system's energy and economic analysis were carried out.The calculation results show that the energy efficiency of the integrated system of sludge drying pyrolysis and treatment is 56.94%,the payback period is 13.32 years,and the net present value is 17.4931 million yuan.The sensitivity analysis show that the NPV of the system is zero when the low-level heat generation of the sludge dry basis is 9.52 MJ/kg.The system remains profitable when the selling price of the pyrolysis oil is reduced by no more than 25.20%,or the sludge treatment subsidy is reduced by 38.46%.
作者
王驰中
范军毅
陈衡
徐钢
张国强
WANG Chizhong;FAN Junyi;CHEN Heng;XU Gang;ZHANG Guoqiang(College of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)
出处
《洁净煤技术》
CAS
CSCD
北大核心
2024年第S02期494-500,共7页
Clean Coal Technology
基金
国家自然科学基金资助项目(52276006)
关键词
污泥热解
资源化利用
系统集成
能量分析
经济性分析
sludge pyrolysis
resource utilization
system integration
energy analysis
economic analysis
