摘要
针对目前生物质热解气中焦油去除困难、焦油能量难以利用等问题,结合现有燃气燃烧器相关技术,开展了生物质热解气直接燃烧技术研究与试验。燃烧器理论耗气量为2~5 m^3/h,通过理论计算确定了燃烧器参数,设计了卧式燃烧室并安装烟气催化裂解装置及烟气检测装置,搭建了热解气燃烧试验平台,并对热解气的燃烧特性进行了试验研究。以花生壳为原料,在碳化温度500℃、滞留时间30 min的条件下进行连续热解碳化,产生的高温热解气直接通入燃烧设备。结果表明,燃烧设备性能较好,热解气燃烧过程稳定,燃烧效率达到98.5%,在催化剂的作用下,燃烧效率提高到98.9%,满足设计要求。
Tar removal and energy recovery of tar are two main problems,which hinder the development of the clean and efficient combustion technology of pyrolysis gas. Based on the combustion technology of fuel gas,the design of a new type of pyrolysis gas burner and study on the pyrolysis gas combustion and emission characteristics were focused on. According to the quantity of the pyrolysis gas,the treatment capacity of the burner was 2 ～ 5 m～3/h. The parameters of the burner were determined by theoretical calculation. The experiment platform consisted of gas burner,combustion chamber,catalystic cracking equipment and flue gas analyzer. Pyrolysis gas originated from peanut shell continuous carbonization flowed into gas burner without condensing. The carbonization temperature and retention time were 500℃and 30 min. The direct combustion test and catalytic combustion experiment were carried out,respectively. The experiment results indicated that the gas burner was working well. The combustion of pyrolysis gas was stable and combustion efficiency could amount to 98. 5%. However,under the action of the catalyst,the combustion efficiency was increased to 98. 9%,while the nitrogen oxides produced was increased by 20 mg/m^3. The research results provided an important reference for the development of high efficiency clean utilization technology of pyrolysis gas. The location of the catalytic cracking unit would need to be studied.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2017年第12期299-305,共7页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十二五"国家科技支撑计划项目(2015BAL04B0301-1)
关键词
生物质热解气
燃烧器
直接燃烧
催化燃烧
排放特性
biomass pyrolysis gas
pyrolysis gas burner
direct combustion
catalytic combustion
emission characteristics
