摘要
以含油污泥与配合煤为原料在850-1150℃热解制得焦样,采用N2吸附-脱附和X射线衍射(XRD)分析煤焦孔隙结构及碳微晶结构,并运用热重分析(TGA)考察热解温度和含油污泥添加量对煤焦气化反应活性的影响。结果表明,提高热解温度和添加含油污泥能促进煤焦形成更加丰富的孔隙结构,强化煤焦-CO2气化反应接触并抑制煤焦石墨化进程,从而提高煤焦气化反应活性;然而,热解温度过高或添加油泥量过多则会致使煤焦结构致密或孔隙堵塞,气化反应活性反而降低。
Char samples were prepared by pyrolysis of oily sludge and blended coal at 850-1150 ℃. The pore structure and crystallite structure of chars were analyzed by N2 adsorption-desorption and X-ray diffraction( XRD). Effects of pyrolysis temperature and amount of oily sludge on gasification reactivity of the char was investigated by thermogravimetric analysis( TGA). The results show that increasing pyrolysis temperature and adding oily sludge can promote the formation of more abundant pore structure of chars,strengthen chars-CO2 gasification reaction and inhibit graphitization process of chars,thus improving gasification reactivity of the chars.However,too high pyrolysis temperature or too much sludge will also result in dense structure or pore plugging of coal char,and reduce gasification reactivity of the char.
作者
邹涛
朱春鹏
张瑜
林益安
刘军
杜彦学
ZOU Tao;ZHU Chun-peng;ZHANG Yu;LIN Yi-an;LIU Jun;DU Yan-xue(Northwest Research Institule of Chemical Industry Co.,Ltd.,Xi′an 710061,China;Shaanxi Coal Chemical Engineering Technology Research Center,Xi′an 710061,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2020年第2期137-143,I0002,共8页
Journal of Fuel Chemistry and Technology
基金
陕西省重点研发计划项目(2019GY-143)
国家重点研发计划项目(2018YFB0604604)资助。
关键词
含油污泥
共热解
煤焦
微观结构
反应性
oily sludge
co-pyrolysis
char
microstructures
gasification reactivity
作者简介
Corresponding author:邹涛,Tel:029-89129836,E-mail:zoutao@aliyun.com.
