Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Specified agitation or circulation in gas contact zone
Patent
1990-10-18
1992-10-20
Myers, Helane
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Specified agitation or circulation in gas contact zone
208410, 208411, 208407, 208427, 208432, 208426, C10G 100
Patent
active
051567342
ABSTRACT:
A system and process for educing hydrocarbons from shale. The system comprises a retort vessel which has an integral apparatus for mixing raw and recycle shale that embodies raw shale pulverizing and has an integral apparatus for finally pulverizing the raw shale particulates that have descended through a fluidized bed. The system further comprises: a burner which generates process heat; heat transfer apparatus which extracts heat for use in the process; and means for recovering such heat. The process involves recovery of significant amounts of process energy including: the recovery of heat from retort vapors; the recovery of heat from spent shale; recovery and utilization of the heat of combustion; and recycling of gases for the operation of mechanical pulverizing apparatus. Significant amounts of process energy are recovered to drive recycle gas compressors, air compressors, and other energy consumers, and to motivate pulverizers resident in the retort vessel for enhancing the flow and recyclability of in-process shale, all is all resulting in a highly thermally efficient and commercially viable oil shale retorting process.
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