Citation: Ming GAO, Xun TAO, Lu DING, Zhe-kun CHEN, Zheng-hua DAI, Guang-suo YU, Fu-chen WANG. Oxidation characteristics of soot in different entrained flow gasification processes[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(1): 28-35. doi: 10.1016/S1872-5813(21)60116-0 shu

Oxidation characteristics of soot in different entrained flow gasification processes

Ming GAO ^{1, 2,} ,
Xun TAO ^{1, 2} ,
Lu DING ^{1, 2} ,
Zhe-kun CHEN ^{1, 2} ,
Zheng-hua DAI ^{1, 2} ,
Guang-suo YU ^{1, 2} ,
Fu-chen WANG ^{1, 2,,}

1.
Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China
2.
National Engineering Research Center of CWS Gasification and Coal Chemical Industry (Shanghai), Shanghai 200237, China

Corresponding author: Fu-chen WANG, wfch@ecust.edu.cn
Received Date: 16 March 2021
Revised Date: 12 May 2021

Figures(7)

The morphological structure of six samples including the rapid pyrolysis soot of solid fuels (coal, biomass), the soot from non-catalytic partial oxidation (NCPOX) of natural gas in a laboratory pilot plant and an industrial plant, the commercial carbon black in natural gas furnace/coal tar furnace, were characterized by using a transmission electron microscope. Based on atmospheric thermogravimetric analyzer, the non-isothermal method (50–800 ℃) was adopted to study the ignition point and the oxidation reaction rate of soot, and the oxidation reaction kinetic parameters of soot was obtained. Studies showed that the physical and chemical properties of various soot were quite different. The soot from the rapid pyrolysis of coal and biomass presented a higher sphericity and a larger particle size. The Lab-NCPOX-soot was formed at a lower temperature which caused the particle being wrapped by a carbon capsule. The Ind-NCPOX-soot had a hollow structure and a small particle size. The reactivity of the Lab-NCPOX-soot is close to that of the Ind-NCPOX-soot, which is 3.1 times that of the commercial natural gas furnace carbon black and 3.2 times that of the commercial coal tar furnace carbon black; the reactivity of NCPOX-soot is 9.0 times of the rapid pyrolysis soot of coal, and 26.6 times of the rapid pyrolysis soot of biomass. The activation energy of 2 kinds of NCPOX-soot and 2 kinds of commercial carbon blacks present staged forms with increasing temperature. The activation energy of the 2 rapid pyrolysis soot was basically unchanged with increasing the temperature.
- soot,
- rapid pyrolysis,
- non-catalytic partial oxidation,
- structure,
- reactivity,
- kinetic
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