Development of an advanced, continuous mild gasification process for the production of co-products
Conference
·
OSTI ID:10128664
The objective of this project is to develop a continuous mild gasification process to convert highly caking coals to coal liquids, char and coke for near term commercial application. Coal liquids after fractionation can be blended with petroleum and used interchangeably with conventional fuels without modifications in gasoline and diesel engines. Char can be used as a carbon source in the production of ferroalloys and in mini-mills. Coke can be produced by upgrading char through briquetting and calcining and for use in the steel industry foundries and blast furnaces. In a step beyond the scope of the project, the plan is to finance, design and construct, in a partnership with others, a plant to produce coal liquid, char and coke in the initial range of 250,000 tons/year. In the Coal Technology Corporation CTC/CLC{reg_sign} Process, coal is continuously moved by interfolded twin screws through a heated retort in the absence of air. The residence time of the coal in the Continuous Mild Gasification Unit (CMGU) is in the range of 20--30 minutes. The coal is heated to controlled temperatures between 800{degree} and 1400{degree}F and is converted into char, condensible hydrocarbon liquids, small quantities of water, and non-condensible fuel gases. The coal derived fuel gases could supply all the required process heat, but for convenience, natural gas is used in the experimental unit. The process concept particularly suitable for highly caking coals which cannot be processed in fluidized bed or moving bed furnaces.
- Research Organization:
- Coal Technology Corp., Bristol, VA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-87MC24116
- OSTI ID:
- 10128664
- Report Number(s):
- DOE/MC/24116--94/C0282; CONF-931156--26; ON: DE94007306; BR: AA8540000/AA8595000
- Country of Publication:
- United States
- Language:
- English
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