Oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process

Abstract

The invention relates to an oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process, which is characterized in that oil shale crushed into at least 75mm is stored in a raw material cabin and is sieved, small-particle oil shale with the particle diameter smaller than 15mm and 15-75 mm large-particle oil shale are respectively conveyed into a left chamber and a right chamber of a medium-temperature gas indirect or direct heat exchange drying heater, and 15-75 mm large-particle oil shale subjected to heating and drying is subjected to gas heat carrier dry distillation; the small-particle oil shale with the particle diameter smaller than 15mm and semicoke are mixed and are subjected to solid heat carrier dry distillation; oil-gas mixtures generated by the solid heat carrier dry distillation are subjected to purification, condensation and separation treatment after sedimentation and gas-solid separation, shale oil is conveyed into an oil storage tank, one part of separated gas is used as heat carriers of the dry distillation of the 15-75 mm large-particle oil shale, and the rest gas is conveyed into a gas storage tank; superheated steam produced by semicoke consumption is conveyed into a steam turbine generator set for electricity generation; one part of semicoke consumption high-temperature hot ash is used as the heat energy of the dry distillation of the small-particle oil shale with the particle diameter smaller than 15mm; and the other part of discharged hot ash is cooled and is then conveyed to a building material factory.

Description

technical field

[0001] The invention relates to the technical field of comprehensive utilization of oil shale resources, in particular to an integrated process of dry distillation of oil-collecting shale gas solid heat carrier for oil refining, semi-coke combustion, power generation and comprehensive utilization of ash. The integrated process can also be used for coal, oil sands, waste tires, petroleum coke, organic waste and biomass. Background technique

[0002] Energy is the cornerstone of the existence of human society and an indispensable factor to ensure the normal operation of the national economy. The rational development and utilization of primary energy will play an important role in promoting economic and social development. According to statistics in 2011, the reserve-production ratios of coal, oil and natural gas in the world are 112 years, 54.2 years and 63.6 years respectively, while those in China are 33 years, 9.9 years and 29.8 years respectively. Accordin...

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