Parametric study of pyrolysis and steam gasification of rice straw in presence of K2CO3

A parametric study of pyrolysis and steam gasification of rice straw (RS) was performed to investigate the effect of the presence of K 2 CO 3 on the behavior of gas evolution, gas component distribution, pyrolysis/gasification reactivity, the quality and volume of synthetic gas. During pyrolysis, with the increase in K 2 CO 3 content in RS (i) the instantaneous CO 2 concentration was increased while CO concentration was relatively stable; (ii) the yield of CO 2 and H 2 increased on the cost of CH 4 . During steam gasification of RS, with the increase in K 2 CO 3 content in RS (i) the instantaneous concentration of CO 2 and H 2 increased while instantaneous concentration of CO and CH 4 decreased; (ii) the yield of CO 2 and H 2 production and total yield increased; and (iii) yield of CO and CH 4 production followed the order: 9% K 2 CO 3 RS