Oxy‐fuel co‐combustion performances and kinetics of bituminous coal and ultra‐low volatile carbon‐based fuels

2020 ◽  
Author(s):  
Chang’an Wang ◽  
Qinqin Feng ◽  
Qisen Mao ◽  
Chaowei Wang ◽  
Guangyu Li ◽  
...  
Keyword(s):  
Bituminous Coal ◽  
Volatile Carbon ◽  
Kinetics Of ◽  
Carbon Based

Characterization and non-isothermal kinetics of Shenmu bituminous coal devolatilization by TG-MS

2017 ◽  
Vol 127 ◽  
pp. 309-320 ◽  
Author(s):  
Chong Zou ◽  
Cheng Ma ◽  
Junxue Zhao ◽  
Ruimeng Shi ◽  
Xiaoming Li
Keyword(s):  
Bituminous Coal ◽  
Isothermal Kinetics ◽  
Kinetics Of

scholarly journals Gasification Kinetics of Bituminous Coal Char in the Mixture of CO2, H2O, CO, and H2

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 496 ◽  
Author(s):  
Junwei Chen ◽  
Weibin Chen ◽  
Yang Jiao ◽  
Xidong Wang
Keyword(s):  
Bituminous Coal ◽  
Gas Diffusion ◽  
Coal Char ◽  
Conversion Degree ◽  
Diffusion Control ◽  
Diffusion Resistance ◽  
Gasification Process ◽  
Control Step ◽  
Kinetics Of ◽  
Gasification Temperature

The gasification kinetics of bituminous coal char was investigated in a mixture of CO2, H2O, CO, H2, and N2 under isothermal conditions. In addition, the impacts of gasification temperature, gasification time, and gas composition on the gasification process were analyzed. As the experimental results suggest, there is a significant increase of the carbon conversion degree of bituminous coal char not just when gasification temperature and time increase, but also when H2 and CO concentration decreases. The kinetics of bituminous coal char in the gasification process was successfully modeled as a shrinking unreacted core. It is concluded that the gasification of bituminous coal char is controlled by an internal chemical reaction in the early stage and diffusion in the later stage. The activation energies of bituminous coal char gasification for different stages were studied. Moreover, it is proposed for the first time, to our knowledge, that the diffusion-control step is significantly shortened with the decrease of the CO2/H2O ratio. As scanning-electron-microscopy results suggest, bituminous coal char gasified in CO2/H2O = 1/3 atmosphere has numerous inner pores (0–5 m). Therefore, in the process of gasification, the inner pores provide a gas channel that reduces the gas diffusion resistance and thus shortens the diffusion-control step. These results can serve as a reference for industrialized application of the technology of coal gasification direct reduced iron.

Thermochemical behaviors and co-gasification kinetics of palm kernel shells with bituminous coal

2019 ◽  
Vol 10 (3) ◽  
pp. 697-706 ◽  
Author(s):  
J. Thiagarajan ◽  
P. K. Srividhya ◽  
P. Balasubramanian
Keyword(s):  
Bituminous Coal ◽  
Palm Kernel ◽  
Kinetics Of ◽  
Palm Kernel Shells

Study on hydro-liquefaction kinetics of thermal dissolution soluble fraction from Shenfu sub-bituminous coal

Fuel ◽  
2017 ◽  
Vol 200 ◽  
pp. 576-582 ◽  
Author(s):  
Hengfu Shui ◽  
Haiyan Xu ◽  
Yan Zhou ◽  
Tao Shui ◽  
Chunxiu Pan ◽  
...  
Keyword(s):  
Bituminous Coal ◽  
Soluble Fraction ◽  
Thermal Dissolution ◽  
Kinetics Of
Sign in / Sign up

Export Citation Format

Share Document