CN202953992U - Integrated device of oil shale gas-solid heat carrier retorting and semi-coke combustion electricity generation - Google Patents

Abstract

Provided is an integrated device of oil shale gas-solid heat carrier retorting and semi-coke combustion electricity generation. The integrated device of the oil shale gas-solid heat carrier retorting and the semi-coke combustion electricity generation is characterized in that oil shale is placed in a raw material bin and is screened, wherein the grain diameter of the oil shale is smaller than or equal to 75mm in a broken mode; small grain shale and large grain shale are respectively sent to a left bin chamber and a right bin chamber of an intermediate temperature gas indirect or direct heat transfer drying heater, wherein the grain diameter of the small grain shale is smaller than 15mm, the grain diameter of the large grain shale is in a range of 15-75mm; gas heat carrier retorting is carried out on the large grain shale which is heated and is dried, wherein the grain diameter of the large grain shale is in a range of 15-75mm; solid heat carrier retorting is carried out on the small grain shale, wherein the grain diameter of the small grain shale is smaller than 15mm; purification, condensation and separation processing are carried out on gas-oil mixtures which are produced by the solid heat carrier retorting after sedimentation and gas-solid separation are carried out on the gas-oil mixtures, obtained shale oil is fed into an oil storage tank, a part of gas which is obtained by separation serves as a heat carrier of retorting of the large grain shale with the grain diameter of 15-75mm, and the rest gas is fed into a gas storage tank; superheated steam produced by semi-coke combustion is fed into a turbine generating set to generate electricity; a part of high-temperature hot ash produced by the semi-coke combustion serves as heat of retorting of the small grain shale with the grain diameter smaller than 15mm, and the other part of the hot ash discharged is sent to a building material factory after being cooled.

Description

Resinous shale gas-solid thermal barrier destructive distillation and coal-char combustion power generation integrated apparatus

Technical field

The utility model relates to oil shale resources comprehensive utilization technique field, is a kind of oil-collecting shale gas-solid thermal barrier destructive distillation oil refining, coal-char combustion, generating and the integrated use device of ash comprehensive utilization.This integrated use device also can be used for coal, oil-sand, junked tire, refinery coke, organic waste materials and biomass.

Background technology

The energy is the foundation stone that human society exists, and is to guarantee the national economy requisite factor that runs well, and the rational exploitation and utilization of primary energy source will play important pushing effect to socio-economic development.According to 2011 annual data statistics, the coal in the world, the storage of oil and natural gas are produced than being respectively 112 years, 54.2 and 63.6, and China is respectively 33 years, 9.9 years and 29.8 years.According to new round oil and gas resource evaluation, the shale oil of China and tar sand oil stock number reach respectively 476.44 hundred million tons and 59.7 hundred million tons.Current oil shale, as the desirable substitute energy of oil, coal, Sweet natural gas, improves resource utilization social development and progress is had great significance on the basis of Devoting Major Efforts To Developing utilization.

The solid fuel that the resinous shale of take is main representative, utilize mode mainly to comprise by destructive distillation and carry out preparing liquid fuel, or the production electric energy that burns.Resinous shale is a kind of organic matter that is rich in, and has fine bedding, the pulveryte that can burn, and the overwhelming majority organic in resinous shale is the one-tenth oil substances (petrologen) that is insoluble to ordinary organic solvents.

Oil shale distillation, be about to be heated to 450～550 ℃ in the environment of resinous shale as for isolated air, make petrologen generation pyrolytic reaction, generate shale oil and destructive distillation coal mine gas, shale oil not only can be directly as the liquid fuel for marine turbine, also can pass through the explained hereafter gasoline such as rectifying and diesel oil etc.At present technology commonly used mainly comprises two kinds of gaseous heat-carrier and solid thermal carriers, carrys out heated oil shale with gas and solid as thermal barrier respectively.

The destructive distillation of gaseous heat-carrier method often adopts upright round tube type stove, only limits to process the block shale of 15～75mm, utilizes the high temperature gas after the process furnace heating to provide destructive distillation needed heat, and the temperature in gas retort maintains 520 ℃ of left and right.The gaseous heat-carrier method is following some deficiency because its destructive distillation characteristic exists: 1, because processing only block shale, particle diameter is larger, the needed destructive distillation time is longer, and part shale do not obtain thorough destructive distillation, thus the gaseous heat-carrier dry distillation exist the low and oil yield of dry distillation efficiency low wait not enough; 2, the small-particle shale produced in shattering process is often abandoned, and is not fully used, and has caused the serious wasting of resources; 3, the semicoke that gas retort produces contains certain fixed carbon, is underutilized, and makes whole destructive distillation thermo-efficiency lower; 4, need the burning coal mine gas to heat the needed gaseous heat-carrier of gas retort or set up independent producer gas generator generation coal gas as gaseous heat-carrier.

Existing solid thermal carriers destructive distillation all adopts the rotary type gas retort, requires to process Oil Shale Particles, and granularity is generally less than 25mm.The helicoid horizontal circle tubular gas retort of general employing, arrange separately the coal-char combustion stove and produce high warm ash, or set up the porcelain ball of gas Fuel Furnace heating as thermal barrier simultaneously.For gaseous heat-carrier, because the grain diameter of resinous shale is little, can fully mix with solid thermal carriers, make the destructive distillation time short, the shale utilization ratio of exploitation can reach 100%, oil yield is high, the Energy resources less wastage.But this type of method for destructive distillation need be crushed to resinous shale very little particle diameter, and breakage energy is larger, roasting kiln only provides high warm ash simultaneously, has neither part nor lot in the production of electric energy, makes the product of system too single.

Open (bulletin) CN101117584 of Chinese invention patent application discloses the applicant, denomination of invention is: " oil shale retorting oil refining, coal-char combustion power generation integrated technique ", it can be realized in oil shale retorting oil refining, the semicoke generating of burning destructive distillation, due to the residing conceptual phase of this technique from now different, do not consider at that time the flue gas drying wet oil shale that utilizes circular fluid bed to produce, do not consider that the hot lime-ash of circulating fluidized bed boiler bottom part sends in destructive distillation and the shale HYBRID RETORTING as solid thermal carriers simultaneously yet, so, this technique has limitation, not yet realize the maximization of resinous shale comprehensive utilization.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of prior art, and prior art is carried out to the substance innovation, a kind of flow process is proposed reasonable, applied range, treatment capacity is large, dry distillation rate is fast, and efficiency is high, can make 15～75mm macrobead shale and<the small-particle shale of 15mm fully utilizes the integrated use device of maximized resinous shale.This integrated use device is also applicable to coal, oil-sand, junked tire, refinery coke, organic waste materials and biomass.

The purpose of this utility model is realized by following technical scheme: a kind of resinous shale gas-solid thermal barrier destructive distillation and coal-char combustion power generation integrated apparatus, it is characterized in that: the outlet of raw material cabin 1 and middle wet body indirectly or the shale entrance of direct heat exchange drying heater 2 be connected, middle wet body indirectly or the macrobead shale of direct heat exchange drying heater 2 exports and the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven 6 is connected with the circulating mash gas entrance with the shale entrance of the indirect dry distillation reactor device 3 of high-temperature gas respectively, middle wet body is indirect or small-particle shale direct heat exchange drying heater 2 exports and grey outlet of heat in heat ash set storehouse 15 all is connected with the entrance of shale mixing tank 9, the outlet of shale mixing tank 9 is connected with the shale entrance of solid thermal carriers dry distillation reactor device 10, the tar gas mixture outlet of solid thermal carriers dry distillation reactor device 10 is connected with the entrance of cyclonic separator 11, the oil gas vent of cyclonic separator 11 all is connected with the entrance of gas-oil separation gathering system 12 with the oil gas vent of the indirect dry distillation reactor device 3 of high-temperature gas, the gentle outlet of the oil of gas-oil separation gathering system 12 is connected with the entrance of gas-holder 13 with storage tank 14 respectively, the gas outlet of gas-oil separation gathering system 12 is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven 6, the semicoke outlet of the indirect dry distillation reactor device 3 of high-temperature gas is connected with semicoke crusher 4 entrances, 4 outlets of semicoke crusher are connected with semicoke magazine 5 entrances, two lime-ash outlets of cyclonic separator 11 are connected with the entrance of semicoke magazine 5, the outlet of semicoke magazine 5 all is connected with the fuel inlet of coal-char combustion circulating fluidized bed electricity generation boiler 7 with burnt circulating fluid bed burning heating gas oven 6, the gas outlet of gas-oil separation gathering system 12 is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven 6, the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven 6 is connected with the circulating mash gas entrance of the indirect dry distillation reactor device 3 of high-temperature gas, the superheated vapour outlet of coal-char combustion circulating fluidized bed electricity generation boiler 7 is connected with steam turbine power generation unit 8 entrances, the end slag of coal-char combustion circulating fluidized bed heating gas oven 6 and coal-char combustion circulating fluidized bed electricity generation boiler 7 and the outlet of cycling hot ash all are connected with slag cooler 16 with heat ash set storehouse 15, the outlet of slag cooler 16 is connected with the entrance of Building Materials Factory 17, coal-char combustion circulating fluidized bed heating gas oven 6, the exhanst gas outlet in coal-char combustion circulating fluidized bed electricity generation boiler 7 and heat ash set storehouse 15 all or smoke inlet direct heat exchange drying heater 2 indirect with middle wet body is connected, middle wet body indirectly or the exhanst gas outlet of direct heat exchange drying heater 2 successively with fly-ash separator 18, induced draft fan 19 is connected with the gas approach of chimney 20, the ash outlet of fly-ash separator 18 is connected with the entrance of Building Materials Factory 17.

The outlet of described gas-holder 13 is connected and carries out fuel gas generation with the entrance of gas-turbine generator set, or is connected with the entrance of gas distribution plant as source of the gas.

The advantage applies of the utility model resinous shale gas-solid thermal barrier destructive distillation and coal-char combustion power generation integrated apparatus exists:

(1) by these two groups different destructive distillation modes of integrated gas thermal barrier and solid thermal carriers, can utilize fully the resinous shale of the particle that varies in size, its comprehensive utilization is maximized, and heat energy utilization in the energy optimization system, reduce heat-energy losses;

(2) relatively single oil shale distillation mode, possess treatment capacity large, and dry distillation rate is fast, the efficiency high;

(3) take full advantage of the resinous shale of the different-grain diameter produced due to apparatus system in broken process, this will reduce because of in single solid thermal carriers retort process to the breakage energy of resinous shale;

(4) by two groups of circular fluid beds, two kinds of different destructive distillation modes are integrated, can be taken full advantage of the semicoke produced in retort process, not only improved the overall thermal economy of system, also reduced the pollution that solid waste is brought environment simultaneously;

(5) relatively single destructive distillation mode, the device technique compact construction is reasonable, and can share mining, crusher and oil gas and wash clearly many equipment such as device, to reduce the system device investment;

(6), by the semicoke circulating fluidized bed combustion stove of two groups of difference in functionalitys is set, the proportionlity in conveniently adjusted system between destructive distillation and generating, to improve the operational coordination of apparatus system;

(7) this apparatus system takes full advantage of the waste that semicoke and lime-ash produce in destructive distillation and combustion processes, when reducing environmental pollution, has also improved whole economic benefit;

(8) also applicable to coal, oil-sand, junked tire, refinery coke, organic waste materials and biomass.

The accompanying drawing explanation

Fig. 1 is resinous shale gas-solid thermal barrier destructive distillation and coal-char combustion power generation integrated apparatus schematic flow sheet.

In figure: 1 resinous shale raw material cabin, in 2 the wet body indirectly or the direct heat exchange drying heater, the indirect dry distillation reactor device of 3 high-temperature gas, 4 semicoke crushers, 5 semicoke magazines, 6 coal-char combustion circulating fluidized bed heating gas ovens, 7 coal-char combustion circulating fluidized bed electricity generation boilers, 8 steam turbine power generation units, 9 shale mixing tanks, 10 solid thermal carriers dry distillation reactor devices, 11 cyclonic separators, 12 gas-oil separation gathering systems, 13 gas-holder, 14 storage tank, 15 heat ash set storehouses, 16 slag coolers, 17 Building Materials Factories, 18 fly-ash separators, 19 induced draft fans, 20 chimneys.

Embodiment

The utility model is described in further detail below to utilize drawings and Examples.

With reference to Fig. 1, the outlet of the raw material cabin 1 of resinous shale gas-solid thermal barrier destructive distillation of the present utility model and coal-char combustion power generation integrated apparatus and middle wet body indirectly or the shale entrance of direct heat exchange drying heater 2 is connected, the small-particle shale of particle diameter<15mm and 15～75mm macrobead shale enter respectively in the indirect or left bin of direct heat exchange drying heater 2 of middle wet body, right bin.Middle wet body indirectly or the macrobead shale of direct heat exchange drying heater 2 exports and the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven 6 is connected with the circulating mash gas entrance with the shale entrance of the indirect dry distillation reactor device 3 of high-temperature gas respectively together, realizes that the macrobead resinous shale carries out destructive distillation in the indirect dry distillation reactor device 3 of high-temperature gas; Middle wet body is indirect or small-particle shale direct heat exchange drying heater 2 exports and grey outlet of heat in heat ash set storehouse 15 is connected with the entrance of shale mixing tank 9 together, the outlet of shale mixing tank 9 is connected with the shale entrance of solid thermal carriers dry distillation reactor device 10, realizes that granule wax shale carries out destructive distillation in solid thermal carriers dry distillation reactor device 10.The tar gas mixture outlet that solid thermal carriers dry distillation reactor device 10 produces is connected with the entrance of cyclonic separator 11, together with the oil gas vent of the oil gas vent of cyclonic separator 11 and the indirect dry distillation reactor device 3 of high-temperature gas, with the entrance of gas-oil separation gathering system 12, be connected, so that gas-oil mixture is purified, condensation and separating treatment, the gentle outlet of the oil of gas-oil separation gathering system 12 is connected with the entrance of gas-holder 13 with storage tank 14 respectively, production is obtained to the oil gas product, store respectively, and the outlet of the gas of gas-oil separation gathering system 12 also is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven 6, for the macrobead oil shale distillation in the indirect dry distillation reactor device 3 of high-temperature gas provides gaseous heat-carrier.The semicoke outlet of the indirect dry distillation reactor device 3 of high-temperature gas is connected with semicoke crusher 4 entrances, and this part semicoke is carried out to break process, and 4 outlets of semicoke crusher are connected with semicoke magazine 5 entrances; 2 lime-ash outlets of cyclonic separator 11 also are connected with the entrance of semicoke magazine 5, with the semicoke that solid thermal carriers dry distillation reactor device 10 is produced, send in semicoke magazine 5.The outlet of semicoke magazine 5 is connected with the fuel inlet of coal-char combustion circulating fluidized bed electricity generation boiler 7 with burnt circulating fluid bed burning heating gas oven 6 simultaneously, the semicoke produced with the burning destructive distillation.The gas outlet part of gas-oil separation gathering system 12 is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven 6, circulating mash gas completes heating in stove, and the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven 6 is connected with the circulating mash gas entrance of the indirect dry distillation reactor device 3 of high-temperature gas; The superheated vapour outlet of coal-char combustion circulating fluidized bed electricity generation boiler 7 is connected with steam turbine power generation unit 8 entrances, is generated electricity.The end slag of coal-char combustion circulating fluidized bed heating gas oven 6 and coal-char combustion circulating fluidized bed electricity generation boiler 7 and the outlet of cycling hot ash are connected with slag cooler 16 entrances with heat ash set storehouse 15 simultaneously, be respectively that solid thermal carriers send into that granule wax shale in heat ash set storehouse 15 provides solid thermal carriers and as normal boiler slag removal with assurance system logistics balance.The outlet of slag cooler 16 is connected with the entrance of Building Materials Factory 17.The exhanst gas outlet in coal-char combustion circulating fluidized bed heating gas oven 6, coal-char combustion circulating fluidized bed electricity generation boiler 7 and heat ash set storehouse 15 all or smoke inlet direct heat exchange drying heater 2 indirect with middle wet body is connected, so that drying source to be provided.Middle wet body indirectly or the exhanst gas outlet of direct heat exchange drying heater 2 with fly-ash separator 18, induced draft fan 19 and the smoke entrance of chimney 20, be connected successively, realize that flue gas externally discharges.The ash outlet of fly-ash separator 18 also goes the entrance of Building Materials Factory 17 to be connected.

The outlet of described gas-holder 13 can be connected and carry out fuel gas generation with the entrance of gas-turbine generator set, or is connected with the entrance of gas distribution plant as source of the gas.

This integrated use device also is applicable to coal, oil-sand, junked tire, refinery coke, organic waste materials and biomass; Also be applicable to the solid fuel of other industry generation and the hot-work of organic waste materials and produce liquids and gases fuel.

The related middle wet body of resinous shale gas-solid thermal barrier destructive distillation of the present utility model and coal-char combustion power generation integrated apparatus indirectly or the major equipments such as direct heat exchange drying heater, the indirect dry distillation reactor device of high-temperature gas, semicoke crusher, steam turbine power generation unit, shale mixing tank, solid thermal carriers dry distillation reactor device, cyclonic separator, semicoke mixing tank, slag cooler, fly-ash separator and induced draft fan all can give development and implementation according to fuel characteristic.

Resinous shale gas-solid thermal barrier destructive distillation of the present utility model and coal-char combustion power generation integrated apparatus are only specific embodiment; and non exhaustive, those skilled in the art should belong to without copying and improving of creative work the scope that the utility model claim is protected.

Claims (2)

1. a resinous shale gas-solid thermal barrier destructive distillation and coal-char combustion power generation integrated apparatus, it is characterized in that: the outlet of raw material cabin (1) and middle wet body indirectly or the shale entrance of direct heat exchange drying heater (2) be connected, middle wet body indirectly or the macrobead shale of direct heat exchange drying heater (2) exports and the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven (6) is connected with the circulating mash gas entrance with the shale entrance of the indirect dry distillation reactor device of high-temperature gas (3) respectively, middle wet body is indirect or small-particle shale direct heat exchange drying heater (2) exports and grey outlet of heat in heat ash set storehouse (15) all is connected with the entrance of shale mixing tank (9), the outlet of shale mixing tank (9) is connected with the shale entrance of solid thermal carriers dry distillation reactor device (10), the tar gas mixture outlet of solid thermal carriers dry distillation reactor device (10) is connected with the entrance of cyclonic separator (11), the oil gas vent of cyclonic separator (11) all is connected with the entrance of gas-oil separation gathering system (12) with the oil gas vent of the indirect dry distillation reactor device of high-temperature gas (3), the gentle outlet of oil of gas-oil separation gathering system (12) is connected with the entrance of gas-holder (13) with storage tank (14) respectively, the gas outlet of gas-oil separation gathering system (12) is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven (6), the semicoke outlet of the indirect dry distillation reactor device of high-temperature gas (3) is connected with semicoke crusher (4) entrance, semicoke crusher (4) outlet is connected with semicoke magazine (5) entrance, two lime-ash outlets of cyclonic separator (11) are connected with the entrance of semicoke magazine (5), the outlet of semicoke magazine (5) all is connected with the fuel inlet of coal-char combustion circulating fluidized bed electricity generation boiler (7) with burnt circulating fluid bed burning heating gas oven (6), the gas outlet of gas-oil separation gathering system (12) is connected with the circulating mash gas entrance of coal-char combustion circulating fluidized bed heating gas oven (6), the circulating mash gas outlet of coal-char combustion circulating fluidized bed heating gas oven (6) is connected with the circulating mash gas entrance of the indirect dry distillation reactor device of high-temperature gas (3), the superheated vapour outlet of coal-char combustion circulating fluidized bed electricity generation boiler (7) is connected with steam turbine power generation unit (8) entrance, the end slag of coal-char combustion circulating fluidized bed heating gas oven (6) and coal-char combustion circulating fluidized bed electricity generation boiler (7) and the outlet of cycling hot ash all are connected with slag cooler (16) with heat ash set storehouse (15), the outlet of slag cooler (16) is connected with the entrance of Building Materials Factory (17), coal-char combustion circulating fluidized bed heating gas oven (6), the exhanst gas outlet in coal-char combustion circulating fluidized bed electricity generation boiler (7) and heat ash set storehouse (15) all or smoke inlet direct heat exchange drying heater (2) indirect with middle wet body is connected, middle wet body indirectly or the exhanst gas outlet of direct heat exchange drying heater (2) successively with fly-ash separator (18), induced draft fan (19) is connected with the gas approach of chimney (20), the ash outlet of fly-ash separator (18) is connected with the entrance of Building Materials Factory (17).

2. resinous shale gas-solid thermal barrier destructive distillation according to claim 1 and coal-char combustion power generation integrated apparatus, it is characterized in that: the outlet of described gas-holder (13) is connected with the entrance of gas-turbine generator set, or is connected with the entrance of gas distribution plant as source of the gas.

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