Effect of catalyst addition on gasification reactivity of HyperCoal and coal with steam at 775–700 °C
Effect of catalyst addition on gasification reactivity of HyperCoal and coal with steam at 775–700 °C
复制标题
DOI：
10.1016/j.fuel.2008.03.010
复制
发表时间：
2008-09
期刊：
影响因子：
7.4
通讯作者：
A. Sharma;T. Takanohashi;I. Saito
中科院分区：
文献类型：
--
作者：
A. Sharma;T. Takanohashi;I. Saito
HyperCoal是一种灰分<0.05wt%的洁净煤。以烟煤为原料，采用溶剂萃取法制备了HyperCoal，萃取率为66.7%。研究了K2 CO 3负载量和温度对HyperCoal及其母煤水蒸气气化速率的影响。在775和700°C下对HyperCoal和具有0-25%催化剂负载的煤进行实验。气化速率随着催化剂负载量的增加而增加，并达到一个值，高于该值时，气化速率不随催化剂负载量变化。催化剂负载量对于HyperCoal为6%，对于煤为20%。这种差异很可能是由于HyperCoal和煤的灰分含量的差异，而不是由于H2抑制对速率的影响。在催化剂存在下，温度只对气化速率有影响，对总煤气产率和煤气组成无影响。
HyperCoal is a clean coal with ash content <0.05wt%. HyperCoal was prepared from a bituminous coal by solvent extraction method with an extraction yield of 66.7%. Effect of K2CO3loading and temperature on steam gasification rate of HyperCoal and parent raw coal was investigated. Experiments were carried out at 775 and 700°C for both HyperCoal and coal with 0–25% catalyst loading. Gasification rates increased with increased catalyst loading and reached a value above which rates did not change with catalyst loading. The catalyst loadings were 6% for HyperCoal and 20% for coal. The difference is most likely due to the difference in ash content of HyperCoal and coal and not due to the effect of H2inhibition on the rate. In the presence of catalyst effect of temperature was only on gasification rate and total gas yield and gas composition were unaffected.