Modeling of Coal char gasification with steam-H2 and steam

摘要：

The experiments of Shenfu coal char steam gasification with hydrogen and without hydrogen at 875-975 on ambient pressure ℃were carried out on a thermogravimetric apparatus. The relationship curves of gasification rate (r=dx/dt) and carbon conversion (x) of steam gasification with hydrogen and without hydrogen were different remarkably. The former gasification kinetics models, such as the random pore model, cant predict the curve of shenfu coal char gasification with H2O/H2, therefore, a gasification kinetics model would be proposed for this gasification with H2O/H2. Based on the random pore model hypothesis, this gasification kinetics model is built through inducing an inhibition factor G (x)=ex(1-x)m to the random pore model. In the expression of model,dx/dt=Aoex(1-x)n√1-Ψ ln(1-x),the value of parameter, n, is linear to the reciprocal of gasification temperature (K). Comparing the experimental data and the curve fitted by this model, it could describe the experimental data of coal char gasification with H2O/H2 mixture gases perfectly and relative coefficients were all above 0.99.

关键词： coal char steam gasification with hydrogen modeling the random pore model.

作者: FAN YANG FUCHEN WANG ZHIJIE ZHOU XINGJUN WANG HAIFENG LIU XIN GONG ZUNHONG YU

作者单位: Institute of clean coal Technology, East China University of Science and Technology,Key laboratory of coal gasification, Ministry of Education Shanghai 200237, China

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）