CO_(2)-gasification of corncob in a molten salt environment  

作　　者：Zhiying Feng Kaifeng Liu Tao Zhu Dongfang Li Xing Zhu 

机构地区：[1]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China

出　　处：《Chinese Journal of Chemical Engineering》2025年第2期58-66,共9页中国化学工程学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(52066007,22279048);the Major Science and Technology Project of Yunnan Province(202202AG050017).

摘　　要：Molten salt gasification is a promising technology for biomass conversion due to its advantages of superior heat transfer and the ability of utilizing solar energy to reduce carbon emission.In this study,the characteristics of corncob CO_(2)-gasification in molten salt environments is thoroughly investigated,and the approach of introducing Fe_(2)O_(3) as catalyst to enhance the syngas yield is proposed.The results showed that the molten salts significantly promoted the conversion of corncob into gaseous products with very low tar and char yield.Compared to O_(2) and H_(2)O atmospheres,utilizing CO_(2) as gasifying agent enhanced the yield of gaseous products during the corncob gasification,especially the yields of CO and H_(2).The introduction of Fe_(2)O_(3) as a catalyst could further increase the yield of gaseous products and the cold gas efficiency(CGE),and the yield of syngas was increased into 2258.3 ml·g^(−1) with a high CGE of 105.8%in 900℃.The findings evidenced that CO_(2) gasification in the molten salt environment with Fe_(2)O_(3) addition can promote the cracking of tar,increasing the syngas yield significantly.Moreover,the energy required to drive the gasification process was calculated,and the total energy consumption was calculated as 16.83 GJ·t−1.The study opened up a new solution for the biomass gasification,exhibiting a great potential in distributed energy or chemical systems.

关 键 词：Molten carbonate Biomass gasification Transition metal oxides Energy consumption 

分 类 号：TK6[动力工程及工程热物理—生物能]