Cogeneration integrated system for dry distillation and power generation on oil shale in-situ mining ground

Abstract

A cogeneration integrated system for dry distillation and power generation on the oil shale in-situ mining ground mainly comprises a circulating fluidized bed boiler and an auxiliary device, an extraction back pressure turbine and an auxiliary device, a gas-steam heat exchanger, an underground dry distillation circulating pump mother pipe, a power facility, a boiling type oil shale dry distillation furnace and an oil shale solid thermal carrier method dry distillation furnace. The cogeneration integrated system for the dry distillation and the power generation on the oil shale in-situ mining ground has the advantages of comprehensively exploiting and effectively using oil shales at different positions of a mine area, using shale semicockes generated during ground dry distillation of the oil shales for power generation, assisting the inductively coupled plasma (ICP) in-situ exploiting technology by using a most ecumenical electricity self-generation way, achieving maximum efficiency gains, and scientifically and effectively utilizing oil shale resources to generate gas, oil, electricity and building materials.

Description

Technical field: [0001] The invention relates to the field of mining and utilization of minerals, in particular to an integrated system for in-situ mining of oil shale aboveground dry distillation and power generation. Background technique: [0002] At present, the exploitation of oil shale at home and abroad is limited to adopting different mining methods according to the different horizons. The processing technology for producing shale oil from oil shale is divided into two categories, namely, surface retorting technology (Surface Retorting) and In-situ mining technology (In-situ Technology), ground dry distillation refers to the oil shale open-pit mining or underground tunnel mining transported to the ground, and crushed and screened to the required particle size or block size, then transported to the dry distillation furnace, after Heating and low-temperature dry distillation produces shale oil, shale gas and shale semi-coke. Most of the carbonization furnaces currently...

AI Technical Summary

Problems solved by technology

[0005]The current mining method is single and common. Insufficiencies: (1) For most shallow ground retort mining areas, there are oil shale with greater resources below 500M Abandoned because it cannot be economically exploited; (2) The semi-coke of the retort oil shale on the ground is not completely burned, which is a waste of resources; (3) Most of the in-situ mining technologies use external energy, and sometimes there will be losses in input and output, and The operation period is long, and the input of manpower and material resources is relatively large; (4) The electricity required by the current mining equipment is purchased from the power grid at a high price

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