Mineral oils: processes and products – Products and compositions – Lubricating oils
Patent
1984-08-17
1985-05-28
Kaplan, G. L.
Mineral oils: processes and products
Products and compositions
Lubricating oils
208 8R, 423449, 423459, C10G 100, C10G 104
Patent
active
045198942
ABSTRACT:
A carbon-containing solid (such as oil shale or tar sand) is treated with air in a six-stage vertical shaft to make producer gas, oil and a pure carbon as products. The top and bottom stages of the vertical shaft are fed to pre-heat incoming solid and to scavenge sensible heat from the processed solid. One stage is a direct retort and makes a gas stream which is a mixture of producer gas and oil. Another stage is a gas producer which converts fixed carbon on the solid to carbon monoxide by reaction with air and carbon dioxide. A fifth stage preheats incoming air. The sixth stage cools and purifies hot carbon monoxide-rich producer gas.
The oil and producer gas products are made by direct retorting of the solid with air followed by a separation step. The pure carbon product is made by separating pure carbon monoxide from the carbon monoxide-rich producer gas followed by reacting the carbon monoxide to carbon dioxide and the pure carbon product.
REFERENCES:
patent: 4392942 (1983-07-01), Wallman et al.
patent: 4399314 (1983-08-01), Child
patent: 4404086 (1983-09-01), Oltrogge
patent: 4431509 (1984-02-01), Tarman
patent: 4435271 (1984-03-01), Deering et al.
patent: 4439306 (1984-03-01), Voetter et al.
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