Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Specified agitation or circulation in gas contact zone
Patent
1987-12-22
1990-07-31
Caldarola, Glenn
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Specified agitation or circulation in gas contact zone
208424, 201 29, C10G 100
Patent
active
049448676
ABSTRACT:
The process for obtaining oil, gas and other products from pyrobituminous shales and the like includes introducing crushed shale into a retort and contacting the crushed shale in the top portion of the retort with a stream of retort gases. Hot gases are injected at an intermediate point of the retort and a stream of cold gases are injected at the bottom of the retort. The gaseous retorted matter above the zone where the shale undergoes pyrolysis is removed and directed to a cyclone from separation of heavy liquid components from a gaseous stream. The gaseous stream is then purified and compressed with a portion of the compressed stream being heated and reinjected as the steam of hot gases into the retort. The other portion of the compressed stream of gases is cooled and a liquid component consisting primarily of water and heavy oil is separate therefrom in a spray tower. The water portion is separated from the oil and recirculated to the spray tower while a part of the oily portion is separated for resue outside the process with the remainder being recycled to the cyclone. A portion of the compressed gases from the cyclone is cooled and injected into the bottom of the retort as the stream of cold gases.
REFERENCES:
patent: 2434567 (1948-01-01), Jahnig et al.
patent: 3577338 (1971-05-01), Gifford, II
patent: 3619405 (1971-11-01), Smith
patent: 3736247 (1973-05-01), Jones, Jr. et al.
patent: 3887453 (1975-06-01), Ueta et al.
patent: 4066529 (1978-01-01), Reeves
Amorim Osvaldo
Batista Altair R. D.
de Almeida Lamprecht Antonio R.
Dias Edson d.
Filho Jorge H.
Caldarola Glenn
Petreleo Brasileiro S.A. - Petrobras
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