Mixing and reaction of pulverized coal in an entrained gasifier
Several coal gasification processes under development include an entrained gasifier as one step in the process. In such cases, coal or char is contacted with a hot gas to cause particle combustion or gasification. Design and optimization of such units require an understanding of particle gasification kinetics, together with insight into turbulent mixing processes of the coal-laden streams with the hot gases. The present study is designed to develop an understanding of the physical and chemical rate processes that occur during gasification of entrained, pulverized coal particles. Specific objectives are to measure locally: (1) the extent of mixing of primary and secondary gases, (2) the extent of particle dispersion, (3) the extent of particle reaction, and (4) the gaseous reaction products including pollutants. This study includes both non-reacting and reacting flow tests to be run at pressures from 1 to 20 atm. Key to the technical approach is particle and gas sampling from the reactor using water-cooled probes. Separate key components in primary and secondary streams will indicate directly the extent of gas phase mixing at the various sampling points. The particulate portion of each sample will be analyzed to determine ash, volatiles, and sulfur and nitrogen content.
- Research Organization:
- Brigham Young Univ., Provo, UT
- OSTI ID:
- 6642934
- Report Number(s):
- CONF-770301-P2
- Journal Information:
- Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Vol. 22:1; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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