文献类型：期刊文献

英文题名：Comparison of physicochemical properties and gasification reactivity of soot from entrained flow gasification processes

作者：Gao, Ming[1];Xiao, Yao[1];Chen, Zhekun[1];Ding, Lu[1];Gao, Yunfei[1];Dai, Zhenghua[1];Yu, Guangsuo[1];Krzywanski, Jaroslaw[2];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Jan Dlugosz Univ Czestochowa, Czestochowa, Poland

年份：2022

卷号：450

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20220039887);WOS:【SCI-EXPANDED(收录号:WOS:000888210400001)】；

基金：This work was supported by the project of the National Key Research and Development (R&D) Program and International Science and Technology Innovation Project between Governments (2021YFE0108900), the National Natural Science Foundation of China (22178114), and Pujiang Talent Program Supported by Fund of Shanghai Science and Technology Committee (project code: 20PJ1402800).

语种：英文

外文关键词：Gasifier soot; Microstructure; Fractal dimension; Gasification; Pollutant to resources

摘要：Soot formation has been a hurdle to the development of entrained flow gasification (EFG) technology, as it damages the apparatus and remains a pollutant. Soot has a poor gasification reactivity in the multiphase flow in furnace. In this study, differences in physicochemical properties and their relationship with gasification reactivity were revealed for natural gas-derived soot (NGS), coal-derived soot (CS), and biomass-derived soot (BS) from EFG process. A comparative study was also conducted between the gasifier soot and a commercial carbon black (CB), N330. The thermogravimetric analyzer (TGA) results showed the descending order of the activation energy (E-a) of gasifier soot was NGS > BS > CS, in both CO2 and H2O gasification process. Transmission electron microscopes (TEM) and Raman spectrum further determined that the gasification reactivity was highly dependent on the carbon content, carbon type, and graphitization degree but less dependent on soot microstructure. This study also investigated the potential replacement of commercial N330 as a rubber reinforcement additive with soot as a pollutant. This replacement was based on the microstructure similarities between soot and CB, as determined using fractal dimension (D-p) as an indicator on a statistical level from TEM. The D-p of NGS was 1.35, 1.06 times larger than that of CS, and 1.22 times larger than of BS. It was highly feasible that NGS would have the close physical property of N330 and could potentially replace the expensive N330 as a rubber reinforcement material.