Pyrolysis of plastic coals: Pore structure development and char reactivity
- Rice Univ., Houston, TX (USA)
This study presents some of the authors recent experimental results on the effect of pyrolysis conditions on the macropore structure of coal chars and on their reactivity during combustion with oxygen. The variables they consider are the pyrolysis heating rate, the final heat treatment temperature (HTT), and the soak time at HTT. Pyrolysis and gasification experiments are carried out on (i) a thermogravimetric reactor that provides accurate measurements of volatile evolution and combustion rates and (ii) a microscope hot-stage reactor that allows direct observation of pyrolyzing and burning particles under a microscope. Their analysis pays particular attention to combustion at high temperatures where the heterogeneous reactions take place in the regime of strong diffusional limitations.
- OSTI ID:
- 6798458
- Report Number(s):
- CONF-900402--
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA), Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Vol. 35:2; ISSN 0569-3772; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010409* -- Coal
Lignite
& Peat-- Pyrolysis & Carbonization-- (1987-)
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DATA
DATA ANALYSIS
DECOMPOSITION
DOCUMENT TYPES
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
INFORMATION
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
NONMETALS
NUMERICAL DATA
OXIDATION
OXYGEN
POROSITY
PROCEEDINGS
PYROLYSIS
THERMOCHEMICAL PROCESSES