环境工程学报2017，Vol.11Issue(11)：6022-6027,6.DOI:10.12030/j.cjee.201701116
城市干污泥热解气化
Pyrolysis and Gasification of Municipal Dry Sludge
摘要
Abstract
The main objective of this study is to discuss the effective utilization of municipal sludge by method of gasification after pyrolysis,the sludge is from Baotou south suburb sewage treatment plant.The variation law of pyrolysis yields were obtained at heating rate from 20 to 60 ℃ · min-1and final pyrolysis temperatures in the range from 400 to 600 ℃.The results showed that the weight loss rate was 57.53％ at the final temperature of 600 ℃,and the tar yield reached the maximum value of 26.25％ at 450 ℃.Gasification of sludge pyrolysis residue was carried out with steam and CO2 as the gasification agent respectively,the variation of the composition of gasification product gas at temperatures from 800 to 1 000 ℃ was discussed.The experimental results showed that the product gas of gasification of pyrolysis residue is hydrogen-rich gas using steam as gasification agent,the volume percentage of H2 in the product gas increased with the increase of reaction temperature,the content of H2 was up to 68.83％,and that of H2 + CO reached 81.36％,and the low heating value is 9.18 MJ · Nm-3.With CO2 as the gasification agent,the main component in the product gas is CO.The higher the temperature,the lager the CO content.It was up to 53.84％,and the low heating value of the product gas is 7.25 MJ · Nm-3 at temperature of 1 000 ℃.关键词
城市污泥/热解/水蒸气气化/CO2气化Key words
municipal sludge/pyrolysis/steam gasification/CO2 gasification分类
资源环境引用本文复制引用
庞赟佶,王宏东,陈义胜,曹放,刘素霞,何丽娟..城市干污泥热解气化[J].环境工程学报,2017,11(11):6022-6027,6.基金项目
国家自然科学基金资助项目(51566014,2015MS0106) （51566014,2015MS0106）
内蒙古自治区高校研究项目(NJZY16159) （NJZY16159）
