In-situ retorting system

Details In-situ retorting system In-situ retorting system

1978-05-23

1980-01-29

Purser, Ernest R.

Mining or in situ disintegration of hard material

Tunnel recovery of fluid material

299 19, E21C 4110

Patent

active

041858719

ABSTRACT:
A carbonaceous deposit is retorted in an array of in-situ retorts comprising rectangular retorts arranged in rows. Adjacent rows of retorts are separated by an unbroken pillar extending the length of the rows. The bottoms of the in-situ retorts slope downwardly from a first side to the opposite side. An exhaust tunnel for the deliver of products from the retort located below the bottom of the retort extends longitudinally of the row with its outer wall approximately in alignment with, but not extending laterally beyond, the pillar to maintain the integrity of the pillar. The system is especially advantageous in the retorting of oil shale and is described in detail for that application.

REFERENCES:
patent: 3917348 (1975-11-01), Janssen
patent: 4043595 (1977-08-01), French

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