CN209508170U - Couple the association circulating power generation system of pyrolysis of coal and air gasification - Google Patents
Couple the association circulating power generation system of pyrolysis of coal and air gasification Download PDFInfo
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- CN209508170U CN209508170U CN201822185405.3U CN201822185405U CN209508170U CN 209508170 U CN209508170 U CN 209508170U CN 201822185405 U CN201822185405 U CN 201822185405U CN 209508170 U CN209508170 U CN 209508170U
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Abstract
Couple the association circulating power generation system of pyrolysis of coal and air gasification, in descending-bed reactor coal high-temperature quick solution and heat exchange cracker in pyrolysis of coal semicoke heat exchange and coke tar cracking and gasification furnace in char gasification coupling, semicoke, the pyrolysis fuel oil on semicoke are heated first using the resulting high temperature fuel gas with low heat value of gasification furnace gasification, the medium temperature fuel gas with low heat value of generation preheats raw coal again, the heat for generating gasification furnace is fully utilized, and improves the thermal efficiency that coal is converted into combustion gas；Fuel gas with low heat value obtained by the high heating value combustion gas and gasification furnace gasization generated using solid heat carrier rapid pyrolysis is respectively enterd gas turbine and boiler and generated electricity step by step, raw coal is farthest become combustion gas by the utility model, even if a small amount of tar generated has also been cracked to form small molecule combustion gas in high-temperature semi-coke, tar and waste water are not generated, gas-purification and environment are conducive to.The utility model has the advantages that have carried out heat cascade utilization, energy conversion efficiency height, non-pollution discharge.
Description
Technical field
The utility model belongs to technical field of coal chemical industry, and in particular to the combined cycle of coupling pyrolysis of coal and air gasification
Electricity generation system and method.
Background technique
Coal accounting in the consumption of China's non-renewable energy is up to 70% or more, wherein there is 60% or more coal to be used to send out again
Electricity.For a long time, it is maintained always reduced levels (40% or so) based on the efficiency of thermal power generation that coal directly burns, the energy turns
Change low efficiency；And coal direct combustion power generation is easy discharge SOx、NOx、PM2.5Particle and carbon dioxide pollute environment and cause greenhouse
Effect.Therefore, country advocates clean efficiency power generation technological development and innovation based on coal in recent years, wherein integral coal gasification
Association circulating power generation system is exactly a kind of efficient coal-based power generation method, is paid close attention to by country and industry.Integral coal gasification connection
Closing cycle generating system is to convert coal into the combustion rich in carbon monoxide, hydrogen and methane so that coal high-efficiency gasification technology is leading
Combustion gas is passed through gas turbine combustion and pushes turbine generation by gas, and the high-temperature flue gas of discharge of gas turbine is further in waste heat boiler
Middle generation high steam pushes steam turbine power generation.Since the system is converted coal into convenient for purification and is taken off using Coal Gasification Technology
The combustion gas of carbon, therefore pollutant emission is effectively controlled, and can realize the complete paved set of carbon dioxide；Secondly, the system is according to combustion
The characteristics of gas-turbine and steam turbine require heat source further extracts the heat in discharge of gas turbine high-temperature flue gas, can be right
Cascaded utilization of energy in gasification burning, farthest obtains the energy in combustion gas, and the total generating efficiency of system reaches as high as
60% or more.Thus, integrated gasification combined cycle for power generation system is future using coal as the first choice in raw material power plant, substitution combustion
Coal power generation will also become inevitable.
The faucet of integrated gasification combined cycle for power generation system is coal gasification, since gas turbine needs high heating value
Fuel gas buring generate high-temperature flue gas push turbine rotary electrification, the gas currently used for integrated gasification combined cycle for power generation system
Change technology be mainly high temperature (1400 DEG C of >), high pressure (> 3MPa), the entrained flow gasification type of pure oxygen gasification, such as Shell and
The dry coal powder airflow bed gasification of GSP, Texaco coal water slurry gasification.But these gasification process gasification temperatures and pressure are high, to equipment
It is required that very harsh；More importantly these gasification process require pure oxygen as gasifying agent, this just needs to be equipped with air separation
Unit, therefore the investment of such gasification process, operation and maintenance cost are all very high.
Setting air gas separation unit can be saved with the normal pressure moderate temperature gasification process of fed oxygen from air, meanwhile, normal pressure is medium
(1000~1200 DEG C) of temperature gasifications gasification furnace and auxiliary device are required it is low, therefore air gas chemical industry skill greatly reduce it is whole
The gross investment of body integrated coal gasification combined cycle system, while operating and operating cost is relatively low, it is that integral coal gasification is combined and followed
The most potential alternative techniques of ring electricity generation system gasification unit.But a large amount of nitrogen are mixed into the combustion gas generated due to air gasification,
Fuel gases calorific value is lower, can not be matched with existing gas turbine；In addition, air gas process is due to the lower meeting of gasification temperature
A certain amount of tar is generated, has larger impact to gas cleaning process, and these tar can not be utilized rationally.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of pair of heats to have carried out cascade utilization, energy conversion
The association circulating power generation system of high-efficient, environmentally friendly no exhaust emission, generating efficiency high coupling pyrolysis of coal and air gasification.
Solving technical solution used by above-mentioned technical problem is: being provided at the top of descending-bed reactor coupled logical
Flash mixer, outlet at bottom be connected by pipeline with the second gas-solid separator, the raw coal entrance of flash mixer passes through
The first coal tar that pipeline is connected with the outlet of the raw coal of the first gas-solid separator, coal tar entrance passes through pipeline and the cracker that exchanges heat
Outlet is connected, and the entrance of the first gas-solid separator is connected with the outlet of the preheating lifter equipped with raw coal by pipeline, is fired
Gas outlet is connected by pipeline with the entrance of the second gas cleaning device, and the fuel gas inlet for preheating lifter passes through pipeline and changes
The gas outlet of thermal cracker is connected, and the semicoke outlet of the second gas-solid separator passes through pipeline and the half of the cracker that exchanges heat
Burnt import is connected, gas outlet is connected by pipeline with the entrance of condenser, the tar outlet of condenser by pipeline with
The tar import of heat exchange cracker is connected, gas outlet is connected by pipeline with the entrance of the first gas cleaning device,
Heat exchange cracker fuel gas inlet be connected by pipeline with the gas outlet of air draught bed char gasification device, the second coal
Coke outlet is connected by pipeline with the coal tar entrance of air draught bed char gasification device, the outlet of the first gas cleaning device
It is connected by pipeline with the fuel gas inlet of gas turbine, the smoke exhaust pipe of gas turbine is connected with the second boiler, the second combustion gas
The outlet of purification device is connected by pipeline with the second boiler, the entrance phase of the steam output pipe and steam turbine of the second boiler
It is connected to, is provided with generator on steam turbine and gas turbine.
As a kind of perferred technical scheme, the heat exchange cracker are as follows: fluidized bed cylinder internal upper part is provided with first
Cyclone separator and the second cyclone separator, lower middle part are provided with gas distribution grid, be provided on fluidized bed cylinder side wall tar into
Mouth, semicoke import, the first coal tar outlet, the second coal tar outlet, into tar mouth in be provided with nozzle, fluidized bed cylinder bottom is provided with
Fuel gas inlet, top are provided with gas outlet, and the entrance of the first cyclone separator is placed in fluidized bed cylinder, top exit and second
The entrance of cyclone separator is connected, and the top exit of the second cyclone separator is connected with the gas outlet of fluidized bed cylinder, bottom
Portion outlet is connected with the first cyclone separator outlet at bottom.
First gas cleaning device and the second gas cleaning device structure is identical, the first gas-purification dress
The outlet for being set to electrostatic precipitator is connected by pipeline with the entrance of blower, and the outlet of blower passes through pipeline and low-temp methanol
The fuel gas inlet of wash mill is connected.
As a kind of perferred technical scheme, the air draught bed char gasification device are as follows: set at the top of gasification furnace
Be equipped with burner, be provided with gas outlet pipe on the side wall of middle and lower part, bottom is provided with slag-drip opening, burner passes through pipeline into coal tar pipe
It is connected with the second coal tar outlet of heat exchange cracker, air intake duct is connected by pipeline with air compressor, vapor
Steam inlet pipe is connected by pipeline with drum, and drum is connected by pipeline with boiler.
As a kind of perferred technical scheme, the gas outlet of the heat exchange cracker is by being equipped with combustion gas compression
Between the pipeline of machine and the outlet of the second coal tar and the coal tar entrance of air draught bed char Gasification device of the cracker that exchanges heat
Pipeline is connected.
As a kind of perferred technical scheme, the second coal tar outlet of the heat exchange cracker and air draught bed coal
Coal tar dismembyator is provided on pipeline between the coal tar entrance of coke gasification device.
The beneficial effects of the utility model are as follows:
The utility model passes through pyrolysis of coal semicoke in coal high-temperature quick solution in descending-bed reactor and heat exchange cracker
Char gasification coupling in heat exchange and coke tar cracking and gasification furnace gasifies resulting high temperature fuel gas with low heat value first using gasification furnace
Semicoke, the pyrolysis fuel oil on semicoke are heated, the medium temperature fuel gas with low heat value of generation preheats raw coal again, the heat in this way generating gasification furnace
Amount is fully utilized, and improves the thermal efficiency that coal is converted into combustion gas；Secondly, the height generated using solid heat carrier rapid pyrolysis
Low-heat solution combustion gas obtained by calorific value fuel gas and gasification furnace gasization respectively enters gas turbine and boiler generates electricity step by step, can solve independent sky
Gas gasifies produced fuel gases calorific value low the problem of can not matching with existing gas turbine steam turbine combined cycle generation.Finally, this
Utility model combined gasification furnace high-temperature gasification and down-flow fluidized bed using ECT high-temperature quick solution technology, farthest become combustion gas for raw coal,
Even if a small amount of tar generated has also been cracked to form small molecule combustion gas in high-temperature semi-coke, therefore the present invention does not generate tar and gives up
Water is conducive to gas-purification and environment.The utility model effectively solves air gasification and matches with the power generation of gas turbine steam turbine
Problem, have the advantages that have carried out heat that cascade utilization, energy conversion efficiency be high, non-pollution discharge.
Detailed description of the invention
Fig. 1 is the association circulating power generation system structural schematic diagram of the utility model coupling pyrolysis of coal and air gasification.
Fig. 2 is the structural schematic diagram of heat exchange cracker 5 in Fig. 1.
Specific embodiment
With reference to the accompanying drawing with implement to the utility model be further described, but the utility model be not limited to it is following
Embodiment.
In Fig. 1, the coupling pyrolysis of coal of the present embodiment is reacted with the association circulating power generation system of air gasification by down-flow fluidized bed using ECT
Device 1, flash mixer 2, preheating lifter 3, the second gas-solid separator 4, heat exchange cracker 5, gas compressor 6, gasification furnace
7, condenser 8, the first electrostatic precipitator 9, the first blower 10, the first low-temp methanol wash mill 11, gas turbine 12, first
Generator 13, the second boiler 14, steam turbine 15, the second generator 16, the second electrostatic precipitator 17, the second blower 18,
It is two low-temp methanol wash mills 19, the first boiler 20, drum 21, coal tar dismembyator 22, burner 23, air compressor 24, natural
Gas surge tank 25, the first gas-solid separator 26 connect and compose.
The top of descending-bed reactor 1 is equipped with coupled logical flash mixer 2, outlet at bottom passes through pipeline and the
The entrance of two gas-solid separators 4 is connected, and the raw coal entrance of flash mixer 2 passes through the original of pipeline and the first gas-solid separator 26
Coal export is connected, coal tar entrance exports 5-5 with the first coal tar of heat exchange cracker 5 by pipeline and is connected, the first gas-solid
The entrance of separator 26 is connected by pipeline with the outlet of the preheating lifter 3 equipped with raw coal, gas outlet by pipeline and
The entrance of second electrostatic precipitator 17 is connected, and the outlet of the second electrostatic precipitator 17 passes through pipeline and the second blower 18
Entrance is connected, and the outlet of the second blower 18 is connected by pipeline with the entrance of the second low-temp methanol wash mill 19, and second
Electrostatic precipitator 17, the second blower 18, the second low-temp methanol wash mill 19 constitute the second gas cleaning device, the second low temperature
The outlet of methanol wash mill 19 is connected by pipeline with the second boiler 14, and the fuel gas inlet of preheating lifter 3 passes through pipeline
It is connected with the gas outlet 5-11 of heat exchange cracker 5, the semicoke outlet of the second gas-solid separator 4 is split by pipeline and heat exchange
The semicoke import 5-2 of solution device 5 is connected, gas outlet is connected by pipeline with the entrance of condenser 8, the coke of condenser 8
Oil export is connected by pipeline with the tar import 5-4 of heat exchange cracker 5, gas outlet passes through pipeline and the first electrostatic
The entrance of dust-extraction unit 9 is connected, and the outlet of the first electrostatic precipitator 9 is connected by pipeline with the entrance of the first blower 10
Logical, the outlet of the first blower 10 is connected by pipeline with the outlet of the first low-temp methanol wash mill 11, the first electrostatic precipitation
Device 9, the first blower 10, the first low-temp methanol wash mill 11 constitute the first gas cleaning device, the washing of the first low-temp methanol
The outlet of device 11 is connected by pipeline with the fuel gas inlet of gas turbine 12, the fuel gas inlet 5-6 for the cracker 5 that exchanges heat
It is connected by pipeline with the gas outlet 5-11 of air draught bed char gasification device, the second coal tar outlet 5-8 passes through pipeline
It is connected with the coal tar entrance of air draught bed char gasification device, the coal tar entrance of air draught bed char gasification device also connects
It is connected to natural gas surge tank 25, the coal of the outlet of the second coal tar 5-8 and air draught bed char gasification device of heat exchange cracker 5
Coal tar dismembyator 22 is installed, the main pipeline of the gas outlet 5-11 connection for the cracker 5 that exchanges heat on the pipeline between burnt entrance
On branch pipe is installed, gas compressor 6 is installed on branch pipe and is connected with the outlet of coal tar dismembyator 22, on gas turbine 12
First generator 13 is installed, the smoke exhaust pipe of gas turbine 12 is connected with the second boiler 14, the steam output of the second boiler 14
Pipe is connected with the entrance of steam turbine 15, and the second generator 16 is equipped on steam turbine 15.
The air draught bed char gasification device of the present embodiment is by gasification furnace 7, the first boiler 20, drum 21, burner 23, sky
Air compressor 24 connects and composes.The top of gasification furnace 7 is equipped with burner 23, is equipped with gas outlet pipe, bottom on the side wall of middle and lower part
Portion is equipped with slag-drip opening, and burner 23 exports 5-8 and naturally by the second coal tar of pipeline and the cracker 5 that exchanges heat into coal tar pipe
Gas surge tank 25 is connected, air intake duct is connected by pipeline with air compressor 24, vapor steam inlet pipe passes through pipeline and
Drum 21 is connected, and drum 21 is connected by pipeline with boiler 14, and the top of gasification furnace 7 is gasification reaction area, lower part is combustion gas
Slag separates and collects area, utilizes air and vapor by coal tar at 1000~1200 DEG C in the gasification reaction area on 7 top of gasification furnace
It is converted into the combustion gas ash of the gentle ashing slag of combustion gas rich in carbon monoxide and hydrogen, combustion gas and lime-ash downlink by gasification furnace lower part
Slag separates and collects the isolated lime-ash discharge gasification furnace in area, and obtained high temperature fuel gas with low heat value is output to heat exchange cracker 5.
In Fig. 2, the heat exchange cracker 5 of the present embodiment is by fluidized bed cylinder 5-1, semicoke import 5-2, nozzle 5-3, coke
Oil inlet 5-4, the first coal tar outlet 5-5, fuel gas inlet 5-6, gas distribution grid 5-7, the second coal tar export 5-8, the first whirlwind
Separator 5-9, the second cyclone separator 5-10, gas outlet 5-11 are connected and composed.
Fluidized bed cylinder 5-1 internal upper part is equipped with the first cyclone separator 5-9 and the second cyclone separator 5-10, lower middle part peace
Equipped with gas distribution grid 5-7, tar import 5-4, semicoke import 5-2, the first coal tar are installed on fluidized bed cylinder 5-1 side wall and
Mouthful 5-5, the second coal tar export 5-8, into tar mouth in nozzle 5-3 is installed, the bottom fluidized bed cylinder 5-1 is equipped with fuel gas inlet 5-
6, top is equipped with gas outlet 5-11, and the entrance of the first cyclone separator 5-9 is placed in fluidized bed cylinder, top exit and the
The entrance of two cyclone separator 5-10 is connected, the combustion gas of the top exit and fluidized bed cylinder 5-1 of the second cyclone separator 5-10
5-11 is connected, outlet at bottom is connected with the first cyclone separator 5-9 outlet at bottom for outlet, into the nozzle 5-3 in tar mouth
By in fluidizing tars bed cylinder 5-1, coke tar cracking is at small molecule combustion gas.
The power generation process of the utility model are as follows:
(1) raw coal high-temperature quick solution
It is outer to compress with through air compressor 24 at burner 23 by natural gas surge tank 25 for natural gas when starting
Air be mixed and burned generate 1050 DEG C hot fume by gasification furnace 7 and exchange heat cracker 5 enter be equipped with raw coal preheating
Lifter 3 preheats raw coal coal dust, and raw coal pulverized coal preheating passes through the first gas-solid separator 26 and flash mixer to 300 DEG C
2 enter in descending-bed reactor 1, and fast pyrogenation reaction occurs at 650~700 DEG C and generates high heating value combustion gas, tar and semicoke；
(2) pyrolysis char heat exchange and coke tar cracking
High heating value combustion gas, tar and the semicoke that descending-bed reactor 1 generates enter in the second gas-solid separator 4, by second
The semicoke that the separation of gas-solid separator 4 forms 650~700 DEG C is input in the fluidized bed cylinder 5-1 of heat exchange cracker 5 by from gas
Change 1050 DEG C of the gas heating that furnace generates and become coal tar to 900 DEG C, at the same the separation of the second gas-solid separator 4 formed contain tar
High heating value combustion gas enters condenser 8 and condenses in the fluidized bed cylinder 5-1 of obtained tar penetrating heat exchange cracker 5, and tar is flowing
Change the coal char surface in bed cylinder 5-1 and be cracked to form small molecule combustion gas, 900 DEG C coal tar a part is defeated by the first coal tar outlet 5-5
Arrive flash mixer 2 out, another part is exported by the second coal tar outlet 5-8, is cracked to form after small molecule combustion gas and heat exchange
The mixed gas that warm combustion gas is formed removes Particulate Inclusion, a large amount of mixing combustion through the two stage cyclone separator in fluidized bed cylinder 5-1
Gas is output to preheating 3 bottom of lifter by main pipeline and preheats to raw coal coal dust, and a small amount of air mixture is through compressor 6
For the fine powder coal tar that dismembyator 22 exports to be transported to 23 entrance of burner after compression；
(3) char gasification
It runs well, closing is outer for natural gas, is passed through by the coal tar of 5 second coal tar of heat exchange cracker outlet 5-8 output
Coal tar dismembyator 22 is ground into fine powder coal tar of the granularity less than 75 μm and delivers into burner by the high-pressure gas from compressor 6
23, the compressed air that is generated by air compressor 24 and the high-pressure steam generated by drum 21 and the first boiler 20 simultaneously by
It inputs in burner 23, coal dust and air and vapor cocurrent, which spray into, occurs gasification reaction in gasification furnace 7, generate 1050 DEG C of low-heat
Value combustion gas enters the bottom fluidized bed cylinder 5-1 of heat exchange cracker 5；
(4) pyrolysis char heat exchange and coke tar cracking are repeated
1050 DEG C of the fuel gas with low heat value and second generated in the fluidized bed cylinder 5-1 of heat exchange cracker 5 by gasification furnace
Generate what small molecule combustion gas was formed after the semicoke that the separation of gas-solid separator 4 forms 650~700 DEG C is exchanged heat and by coke tar cracking
Air mixture removes Particulate Inclusion by the two stage cyclone separator in fluidized bed cylinder 5-1, and a large amount of air mixture is output to pre-
Hot 3 bottom of lifter preheats raw coal coal dust, and it is 900 DEG C that semicoke becomes temperature after heat exchange in fluidized bed cylinder 5-1
Coal tar, the coal tar a part by the first coal tar outlet 5-5 be output to flash mixer 2, another part is exported by the second coal tar
5-8 output；
(5) raw coal high-temperature quick solution is repeated
Air mixture from heat exchange cracker 5 in preheating lifter 3 preheats raw coal coal dust, raw coal coal dust
After being preheating to 300 DEG C, air mixture and raw coal coal dust are output to the first gas-solid separator 26 together, and the first gas-solid separator 26 will
Air mixture and raw coal coal dust separate, and the raw coal coal dust isolated enters flash mixer 2 and from heat exchange cracker 5
900 DEG C of coal tar enters in descending-bed reactor 1 after being sufficiently mixed, and fast pyrogenation reaction occurs at 650~700 DEG C and generates height
Calorific value fuel gas, tar and semicoke；
(6) high heating value combustion gas and fuel gas with low heat value combined cycle generation
High heating value combustion gas, tar and the semicoke that descending-bed reactor 1 generates enter in the second gas-solid separator 4, by second
The semicoke that the separation of gas-solid separator 4 forms 650~700 DEG C is input in the fluidized bed cylinder 5-1 of heat exchange cracker 5, separates shape
At the combustion gas of high heating value containing tar enter in condenser 8 condensation and obtain the fluidized bed cylinder that a small amount of tar sprays into heat exchange cracker 5
In 5-1, condensed high heating value combustion gas is successively passed through the second electrostatic precipitator 17, the second blower 18, the second low-temp methanol and is washed
It washs after device 19 purifies and generates electricity into gas turbine 12, the high-temperature flue gas of generation enters back into boiler 14 and generates Steam Actuation
Steam turbine 15 generates electricity, and isolates air mixture by the first electrostatic precipitator 9, the first blower by the first gas-solid separator 26
10, entering boiler 14 after the purification of the first low-temp methanol wash mill 11 pushes steam turbine 15 to generate electricity.
Claims (6)
1. a kind of association circulating power generation system for coupling pyrolysis of coal and air gasification, it is characterised in that: descending-bed reactor (1)
Top is provided with coupled logical flash mixer (2), outlet at bottom is connected by pipeline with the second gas-solid separator (4)
Logical, the raw coal entrance of flash mixer (2) is connected by pipeline with the outlet of the raw coal of the first gas-solid separator (26), coal tar enters
Mouth is connected by pipeline with the first coal tar of heat exchange cracker (5) outlet (5-5), the entrance of the first gas-solid separator (26)
It is connected by pipeline with the outlet of the preheating lifter (3) equipped with raw coal, gas outlet passes through pipeline and the second gas-purification
The entrance of device is connected, the gas outlet that the fuel gas inlet of preheating lifter (3) passes through pipeline and heat exchange cracker (5)
(5-11) is connected, the semicoke import that the semicoke outlet of the second gas-solid separator (4) passes through pipeline and heat exchange cracker (5)
(5-2) is connected, gas outlet is connected by pipeline with the entrance of condenser (8), and the tar outlet of condenser (8) passes through pipe
Road is connected with the tar import (5-4) of heat exchange cracker (5), gas outlet passes through pipeline and the first gas cleaning device
Entrance is connected, and the fuel gas inlet (5-6) of heat exchange cracker (5) passes through the combustion of pipeline and air draught bed char gasification device
Gas outlet is connected, the second coal tar outlet (5-8) is connected by pipeline with the coal tar entrance of air draught bed char gasification device
Logical, the outlet of the first gas cleaning device is connected by pipeline with the fuel gas inlet of gas turbine (12), gas turbine (12)
Smoke exhaust pipe be connected with the second boiler (14), the outlet of the second gas cleaning device is connected by pipeline with the second boiler (14)
Logical, the steam output pipe of the second boiler (14) is connected with the entrance of steam turbine (15), steam turbine (15) and gas turbine
(12) generator is provided on.
2. the association circulating power generation system of coupling pyrolysis of coal and air gasification according to claim 1, it is characterised in that institute
The heat exchange cracker (5) stated are as follows: fluidized bed cylinder (5-1) internal upper part is provided with the first cyclone separator (5-9) and the second whirlwind
Separator (5-10), lower middle part are provided with gas distribution grid (5-7), are provided with tar import (5- on fluidized bed cylinder (5-1) side wall
4), semicoke import (5-2), the first coal tar outlet (5-5), the second coal tar outlet (5-8), into tar mouth in be provided with nozzle (5-
3), the bottom fluidized bed cylinder (5-1) is provided with fuel gas inlet (5-6), top is provided with gas outlet (5-11), the first cyclonic separation
The entrance of device (5-9) is placed in fluidized bed cylinder (5-1), top exit is connected with the entrance of the second cyclone separator (5-10),
The top exit of second cyclone separator (5-10) is connected with the gas outlet (5-11) of fluidized bed cylinder (5-1), outlet at bottom
It is connected with the first cyclone separator (5-9) outlet at bottom.
3. the association circulating power generation system of coupling pyrolysis of coal and air gasification according to claim 1, it is characterised in that: institute
The first gas cleaning device and the second gas cleaning device structure stated are identical, and first gas cleaning device is first quiet
The outlet of electrical dust collector device (9) is connected by pipeline with the entrance of the first blower (10), and the outlet of the first blower (10) passes through
Pipeline is connected with the fuel gas inlet of the first low-temp methanol wash mill (11).
4. the association circulating power generation system of coupling pyrolysis of coal and air gasification according to claim 1, it is characterised in that institute
The air draught bed char gasification device stated are as follows: be provided with burner (23) at the top of gasification furnace (7), be provided on the side wall of middle and lower part
Gas outlet pipe, bottom are provided with slag-drip opening, and burner (23) passes through pipeline and the second of heat exchange cracker (5) into coal tar pipe
(5-8) is connected, air intake duct is connected by pipeline with air compressor (24), vapor steam inlet pipe passes through pipe for coal tar outlet
Road is connected with drum (21), and drum (21) is connected by pipeline with boiler (14).
5. the association circulating power generation system of coupling pyrolysis of coal and air gasification according to claim 1, it is characterised in that: institute
The gas outlet (5-11) for the heat exchange cracker (5) stated is filled by the pipeline and heat exchange cracking for being equipped with gas compressor (6)
The pipeline set between the second coal tar outlet (5-8) of (5) and the coal tar entrance of air draught bed char Gasification device is connected.
6. the association circulating power generation system of coupling pyrolysis of coal and air gasification according to claim 5, it is characterised in that: institute
Between the second coal tar outlet (5-8) for the heat exchange cracker (5) stated and the coal tar entrance of air draught bed char gasification device
Pipeline on be provided with coal tar dismembyator (22).
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| CN201822185405.3U CN209508170U (en) | 2018-12-25 | 2018-12-25 | Couple the association circulating power generation system of pyrolysis of coal and air gasification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109517628A (en) * | 2018-12-25 | 2019-03-26 | 西北大学 | Couple the association circulating power generation system and method for pyrolysis of coal and air gasification |
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2018
- 2018-12-25 CN CN201822185405.3U patent/CN209508170U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109517628A (en) * | 2018-12-25 | 2019-03-26 | 西北大学 | Couple the association circulating power generation system and method for pyrolysis of coal and air gasification |
| CN109517628B (en) * | 2018-12-25 | 2024-02-23 | 西北大学 | Combined cycle power generation system and method for coupling coal pyrolysis and air gasification |
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