文献类型：期刊文献

英文题名：Understanding of the effect of oxygen on soot formation during non-catalytic partial oxidation process

作者：Gao, Ming[1,2,3];Xiao, Yao[1,3];Ding, Lu[1,3];Gao, Yunfei[1,3];Dai, Zhenghua[1,3];Yu, Guangsuo[1,3];Yang, Wenming[2];Wang, Fuchen[1,3]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore;[3]Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, Shanghai 200237, Peoples R China

年份：2024

卷号：284

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20234715102937);WOS:【SCI-EXPANDED(收录号:WOS:001114245400001)】；

基金：This work was financed by the National Natural Science Foundation of China (22178114) and the China Scholarship Council.

语种：英文

外文关键词：NC-POX; Soot formation; Precursor; Oxygen to methane ratio; Mechanism

摘要：Non-catalytic partial oxidation (NC-POX) process is a promising technology for hydrogen and syngas production, but the generation of soot hinders its development. In this study, the yields of soot and its precursors under different working conditions are quantified by experiments. When the O2/CH4 ratio is more than 0.6, the soot yield can be controlled below 1.07% from 2.53%. The soot precursor evolution mechanism in NC-POX is analyzed through the quantification of polycyclic aromatic hydrocarbon (PAH) compounds. It is found that hydrogen abstraction vinyl radical addition (HAVA*) and methyl addition cyclization (MAC) are the main growth pathways of PAHs. The concentrations of H2O, CO2, and oxygenated hydrocarbons increase with O2/CH4, which further inhibit the soot generation reactions and reduce the degree of graphitization of soot particles through surface reactions. A soot formation mechanism is proposed. This study provides a quantified reference for soot modeling and the elimination of soot in industry.