Distillation: processes – thermolytic – Including burning of vaporized product
Patent
1977-07-25
1978-07-11
Scovronek, Joseph
Distillation: processes, thermolytic
Including burning of vaporized product
44 1F, 44 10C, 201 32, 201 37, 201 44, C10B 4900, C10B 5300, C10B 5702
Patent
active
041000323
ABSTRACT:
A process for carbonizing lignite coal in a Herreshoff Carbonizer of a multi-hearth type. The novel process comprises the steps of introducing given quantities of lignite in the first and succeeding hearths while introducing sufficient quantities of combustion air and fuel to ignite the fuel and to raise the temperature of the hearths until the process is self-sustaining as a result of the combustion of the volatiles driven off of the lignite. The hearth temperatures range approximately 1450.degree. to 1620.degree. F in the first furnace hearth with the second furnace hearth ranging approximately 1650.degree. to 1800.degree. F and the third furnace hearth ranging approximately 1650.degree. to 1890.degree. F. Sufficient combustion air is introduced into various hearths of the furnace to insure complete combustion in at least the first hearth and in the stack of the volatiles being driven off thereby making the process self-sustaining, allowing the introductory fuel to be cut off. The final volatile content of the specification char made in the furnace from the lignite is controlled by utilizing the remaining succeeding hearths in the furnace with the temperatures ranging in these hearths approximately 900.degree. F to 1250.degree. F. The specification char thereby made in the furnace is a char manufactured to a definite residual volatile content.
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Husky Industries Inc.
Scovronek Joseph
Von Behren N. E.
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