Mineral oils: processes and products – Phenolic or toxic oils
Patent
1978-12-28
1980-08-19
Levine, Herbert
Mineral oils: processes and products
Phenolic or toxic oils
208 11R, C10G 100, C10G 102
Patent
active
042183049
ABSTRACT:
Mined, crushed hydrocarbonaceous solids are pyrolyzed in a retort with a gas containing hydrocarbons. The gas is heated to a suitable temperature of at least 600.degree. F. Thereafter, a relatively small amount of oxygen is added to the heated gas outside the retort. The resulting mixture is then flowed into the retort. The amount of oxygen is theoretically sufficient to raise the temperature of the heated gas at least 100.degree. F., but is less than the amount theoretically sufficient to react with all of the hydrocarbons in the heated gas. The process is applicable to any type of retort wherein a retort recycle gas containing hydrocarbons is heated outside the retort and is then injected into the retort to provide a source of heat for pyrolyzing hydrocarbonaceous solids in the retort. The advantages of this modified indirect heated retorting method depends on the type of retort. This method provides added control over carbonate decomposition, coking or carbonization of the gas during heating, total gas flow, process variations, and the heat requirements and thermal efficiency of the process.
REFERENCES:
patent: 3736247 (1973-05-01), Jones et al.
patent: 3841992 (1974-10-01), Jones et al.
patent: 4042485 (1977-08-01), Jones et al.
patent: 4152243 (1979-05-01), Legille et al.
Atlantic Richfield Company
Folzenlogen M. David
Levine Herbert
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