In situ retorting of oil shale with pulsed combustion

Details In situ retorting of oil shale with pulsed combustion In situ retorting of oil shale with pulsed combustion

1981-05-20

1984-03-13

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

166259, 166261, E21B 43243, E21C 4110

Patent

active

044363443

ABSTRACT:
Product yield and quality is increased during in situ retorting of oil shale by pulsed combustion in which the flow of feed gas to the flame front is intermittently stopped while continuously retorting the oil shale. A purge gas can be injected into the retort between pulses of feed gas to enhance transfer of sensible heat from the combustion zone to the retorting zone and enlarge the separation between the combustion zone and the advancing front of the retorting zone.

REFERENCES:
patent: 3980339 (1976-09-01), Heald et al.
patent: 3994343 (1976-11-01), Cha et al.
patent: 4059308 (1977-11-01), Pearson et al.
patent: 4087130 (1978-05-01), Garrett
patent: 4263970 (1981-04-01), Cha

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