The new CTC continuous cokemaking process that meets both environmental and coke quality specifications
Conference
·
OSTI ID:460637
- Coal Technology Corp., Bristol, VA (United States)
Coal Technology Corporation (CTC) in association with the US Department of Energy has developed, patented, and demonstrated a new process to continuously produce high quality coke in less than two hours without the normal environmental emissions associated with existing by-product coke ovens. This process involves the production of three new marketable products from bituminous caking type coals: (1) continuous coke for foundry and blast furnace applications; (2) char containing less than 10% volatiles for use in the ferroalloy smelting furnaces; and (3) coal derived liquids for use in the transportation and chemical industry. The CTC/CLC{reg_sign} (Char, Liquids, and Coke) Mild Gasification Process utilizes a unique twin screw reaction system to produce a devolatilized char from a wide variety of caking and non-caking coals in an environmentally clean system. The CTC/CLC{reg_sign} Process is a two-stage carbonization system with a low temperature (1,000--1,200 F) mild gasification stage followed by a high temperature (1,800--2,000 F) calcining stage in a totally enclosed system with condensing of the coal liquids and the utilization of the off-gases as the reactor heat source. The process has been demonstrated in a 10-ton per day pilot plant and is now ready for commercialization. The coke and char products meet or exceed the existing quality specification now used in the industry. The coke can be produced in either uniform or irregular shapes to meet the required porosity of foundry and blast furnaces. A commercial plant is now being planned with coke production to begin in 1996. The plant site has been selected, environmental and construction permits granted.
- OSTI ID:
- 460637
- Report Number(s):
- CONF-960317--; ISBN 1-886362-12-2
- Country of Publication:
- United States
- Language:
- English
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