Method and apparatus for conservation of heat from sludge produc

Details Method and apparatus for conservation of heat from sludge produc Method and apparatus for conservation of heat from sludge produc

1978-07-17

1980-10-07

Levine, Herbert

Mineral oils: processes and products

Products and compositions

Lubricating oils

202150, C10B 4902, C10G 102

Patent

active

042266998

ABSTRACT:
In a process for the retorting of oil shale wherein hot flue gases containing oxygen are used for preheating the raw oil shale and wherein, additionally, a combustible sludge containing particulate matter and bottoms oil is produced, method and apparatus are disclosed for forming a combustible mixture of the sludge and the gases whereby the sludge is combusted to raise the temperature of the gases and produce only entrained particulate matter as a by-product. By so doing, the requirement for additional fuel to heat the gases to operational temperatures is reduced and the sludge is eliminated as a by-product of the process requiring separate disposal. Rather, the entrained particulate matter is removed and disposed of along with particulate matter normally produced within the process.

REFERENCES:
patent: 2725347 (1955-11-01), Leffer
patent: 3925190 (1975-12-01), Whitcombe et al.

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