Gasification reactivity of Shenhua direct liquefaction residue with steam and CO₂

 The gasification reactivity of Shenhua coal char (CC) and Shenhua coal direct liquefaction residue char (RC) with CO₂ and steam was studied using a fixed bed reactor. The results show that CC has a higher steam gasification activity than RC, while RC has a higher CO₂ gasification activity than CC, which is due to different influencing factors for steam and CO₂ gasification. For steam gasification the reactivity of char is mainly affected by coal rank, but for CO₂ gasification the reactivity of char is mainly affected by the catalysis of mineral matter.