燃料化学学报2022，Vol.50Issue(2)：129-142,14.DOI:10.1016/S1872-5813(21)60169-X
煤热解与甲烷蒸汽重整耦合过程焦油在碳基镍催化剂上的原位催化提质
In-situ catalytic upgrading of tar from integrated process of coal pyrolysis with steam reforming of methane over carbon based Ni catalyst
摘要
Abstract
In order to improve the tar quality by decreasing the heavy tar content and ensuring high tar yield, in-situ catalytic upgrading of tar from the integrated process of coal pyrolysis coupled with steam reforming of methane was conducted over carbon (KD-9) based Ni catalyst. The results show that at 650 ℃, the tar yield of CP-SRM over 5Ni/KD-9 is 24.4％, which is a little lower than that of without catalyst, while the light tar yield (i.e.,18.9％) is 1.4 times higher than that of without catalyst, and the content of C2, C3 and C4 alkyl used as a substitute for benzene significantly increases tar yields by 0.5, 0.6 and 4.0 times, respectively. The content of phenols and naphthalenes in tar also increases dramatically after upgrading. Isotope tracer approach combined with the mass spectra of typical components was employed in exploring the mechanism of the upgrading process. The results show that 5Ni/KD-9 catalyzes coal tar cracking and SRM at the same time. Small free radicals such as ·CHx, ·H and ·OH generated by SRM can combine with free radicals from tar cracking, thus avoiding excessive cracking of tar.关键词
煤热解/催化提质/焦油/甲烷蒸汽重整/同位素示踪Key words
coalpyrolysis/catalyticupgrading/tar/steamreformingofmethane/isotopetracer分类
化学化工引用本文复制引用
王政委,魏宝勇,吕剑楠,王一鸣,武云飞,杨赫,胡浩权..煤热解与甲烷蒸汽重整耦合过程焦油在碳基镍催化剂上的原位催化提质[J].燃料化学学报,2022,50(2):129-142,14.基金项目
The project was supported by NSFC and Shanxi Provincial Government of China(U1710105). （U1710105）
