Distillation: processes – thermolytic – Including burning of vaporized product
Patent
1975-06-18
1977-07-26
Richman, Barry S.
Distillation: processes, thermolytic
Including burning of vaporized product
201 32, 201 36, 201 38, 202131, 202218, C10B 4906, C10B 5712, C10B 5718
Patent
active
040381536
ABSTRACT:
Pulverulent coke and granular reactive coke are produced, respectively, from fines and grains of coal of grades which are not normally usable for coking, containing more than 15% of volatile matter and having a swelling index between 1 and 8, by carbonization between 600.degree. C and 1100.degree. C, wherein combustion air in excess of that which would be necessary to bring the coke to the desired coking temperature is introduced into a slightly inclined rotary tubular oven through which the coal passes during its conversion into coke, the air introduction being effected between the coke outlet and the zone in which the product reaches its maximum temperature and being controlled so that the temperature of the gases issuing from the oven is kept above 600.degree. C. At least 60% of the air is preferably introduced at the downstream end of the oven, and further air may be introduced at intermediate points along the oven length. An endothermic fluid such as water may also be injected at the downstream end of the oven. Preferably the lowest rate of temperature rise of the product (10.degree. to 15.degree. C/min) is in the 300.degree. to 450.degree. C temperature zone of the oven.
REFERENCES:
patent: 955310 (1910-04-01), Beehler
patent: 1602819 (1926-10-01), Jakowsky
patent: 2710280 (1955-06-01), Borch
patent: 2813822 (1957-11-01), Collier
Deruelle Jean
Penet Olivier
Garris Bradley
Houilleres Du Bassin De Lorraine
Richman Barry S.
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