PROCESS AND APPARATUS FOR RECOVERING OIL AND GAS FROM OIL SHALE

• Main Author: TAKEUCHI YOSHIYUKI
• Format: Patent
• Language: English
• Published: 09.03.1984
• Subjects: CHEMISTRY; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; FUELS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE

PURPOSE:To efficiently recover oil and gas by effectively recovering heat of oil shale by dry distilling the oil shale using an apparatus constituted of a combination of a moving grate-type apparatus, crusher and fluidized layer apparatus. CONSTITUTION:Dry distillation is carried out by heating a granular oil shale layer 2 on a moving grate 1 to 300-900 deg.C in a preheating/dry distillation section A. A part of the dry distillation product gas obtd. by cooling and separating, as hereinafter described, the produced dry distillation product is heated in a furnace F and used for the above heating. After crushed and adjusted by a crusher C, the residual granule is formed into a fluidized layer with an oxygen-contg. gas stream 15 in a combustion apparatus D and the residual combustible material is burned to recover heat. The remaining coarse powder is primarily cooled with a cooling gas stream 9 in a primary cooling tower E while forming the state of a fluidized layer, and further secondarily cooled by a secondary cooling tower T, and the cooled waste solid is discharged out of the system. Oil and gas are efficiently recovered by recovering heat from both the primary and secondary cooling processes.