CN205746770U - A kind of CFBB of thermoelectricity gas Poly-generation - Google Patents

A kind of CFBB of thermoelectricity gas Poly-generation Download PDF

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Publication number
CN205746770U
CN205746770U CN201620443997.2U CN201620443997U CN205746770U CN 205746770 U CN205746770 U CN 205746770U CN 201620443997 U CN201620443997 U CN 201620443997U CN 205746770 U CN205746770 U CN 205746770U
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China
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pyrolysis oven
boiler
gas
generation
coal
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CN201620443997.2U
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Inventor
赵鹏勃
肖平
高洪培
时正海
林伟荣
李煜喆
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Huaneng Clean Energy Research Institute
Huaneng Power International Inc
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Huaneng Clean Energy Research Institute
Huaneng Power International Inc
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Abstract

The utility model discloses the CFBB of a kind of thermoelectricity gas Poly-generation, the boiler hearth of circulating fluidized bed of boiler separator it is communicated with including top, the top of boiler separator is connected to heat smoke passage with generating, bottom is communicated with hot ash stream device, and the outlet of hot ash stream device is connected with the top of pyrolysis oven by pyrolysis oven hot ash stream pipeline;The feeding mouth of pyrolysis oven connects with pyrolysis oven batcher, and coal is vented one's spleen and dissolved mouth and connect with air accumulator through coal gas transfer passage.This utility model can realize the Poly-generation of set of system interior-heat, electricity, gas, in pyrolysis oven by agitator stirring ensure pyrolysis furnace high-temperature ash and coal be sufficiently mixed reaction, improve gas yield;Both polygenerations systeme operation can have been carried out, it is also possible to after closing pyrolysis oven, keep former circulating ash loop independent operating, it is ensured that the independent operating state of boiler.

Description

A kind of CFBB of thermoelectricity gas Poly-generation
Technical field
This utility model belongs to Thermal Power Engineering technical field, relates to coal comprehensive utilization, particularly to one The CFBB of thermoelectricity gas Poly-generation.
Background technology
China is relatively rich coal, a country for oil-poor, few gas, and coal is in Chinese national economy and society Development occupies an important position.At present, the main Land use systems of coal in China is directly burning, accounts for coal The 80% of charcoal total amount.Although the directly burning of coal is simple, but efficiency level is relatively low, seriously polluted.With Time waste coal have the oil of high added value, gas and chemicals and the resource such as sulfur, aluminum.
Realize with the pyrolytic gasification technology of coal that coal gas is produced, coal-char combustion, ash comprehensive utilization be for main special The thermoelectricity gas Poly-generation technology of point can obtain coal gas, electric power and steam product, thus improves coal utilization Efficiency and benefit.It addition, in coal gas and flue gas institute's sulfur-bearing nitrogen pollutant can be separately recovered extracting sulfuric acid, The products such as calcium nitrite, lime-ash residue after extracting high value metals is used for building materials raw material, it is achieved pollutant With lime-ash clean emission and comprehensive utilization of resources.Circulating fluidized bed heat-power-gas Poly-generation technology can be not only used for Newly-built coal unit, is applicable to again current a large amount of existing coal-burning power plant or the transformation of coal-burning boiler, application Have a extensive future.
Summary of the invention
This utility model solves the problem in that the CFBB providing a kind of thermoelectricity gas Poly-generation, Utilize circulating ash that coal is directly heated, make pyrolysis of coal produce coal gas, and semicoke pyrolysis of coal produced All return boiler furnace burning to utilize, thus realize the Poly-generation that set of system interior-heat is electric.
This utility model is to be achieved through the following technical solutions:
The CFBB of a kind of thermoelectricity gas Poly-generation, is communicated with following of boiler separator including top Ring fluid bed boiler furnace, the top of boiler separator is connected to heat smoke passage with generating, and bottom connects It is connected with hot ash stream device, the outlet of the hot ash stream device top by pyrolysis oven hot ash stream pipeline Yu pyrolysis oven Portion is connected;The feeding mouth of pyrolysis oven connects with pyrolysis oven batcher, and coal is vented one's spleen and dissolved mouth through coal gas conveying Passage connects with air accumulator.
Described includes to heat smoke passage: boiler separator sequentially passes through central cylinder of separator and outlet cigarette Road, high temperature superheater, low temperature superheater, economizer are connected with air preheater, then removing dust device, desulfurization Tower is connected with chimney with air-introduced machine.
The high-temp circulating ash outlet of described hot ash stream device includes two-way, the hot ash stream of pyrolysis oven of leading up to Pipeline is connected with the top of pyrolysis oven, separately leads up to returning charge inclined tube and boiler hearth of circulating fluidized bed Bottom is connected.
The top of described pyrolysis oven is additionally provided with agitator, and blender is to the high-temp circulating ash of pyrolysis oven and coal Carry out mix and blend.
The bottom of described pyrolysis oven is additionally provided with spiral returning charge machine, and pyrolysis oven spiral returning charge machine passes through returning charge Pipeline is connected with the bottom of boiler hearth of circulating fluidized bed.
The coal of described pyrolysis oven is vented one's spleen and is dissolved mouth through gas cooler, gas purifier, gas pump and storage Gas tank is connected.
Bellows and slag-drip opening it is additionally provided with bottom described boiler hearth of circulating fluidized bed.
Described boiler separator, pyrolysis oven are set to multiple, in the surrounding of boiler hearth of circulating fluidized bed It is uniformly distributed.
Compared with prior art, this utility model has a following useful technique effect:
The CFBB of the thermoelectricity gas Poly-generation that this utility model provides, it is possible to achieve set of system Interior-heat, electricity, the Poly-generation of gas, boiler oil burns in boiler hearth of circulating fluidized bed, produces heat energy, Can be used to generate electricity, heat supply etc.;The heat smoke that burning produces separates through boiler separator with flue dust, high Temperature circulating ash is separated by hot ash stream device introducing pyrolysis oven as solid thermal carriers, to pyrolysis oven The coal that batcher feeds carries out pyrolytic gasification, and the coal gas of generation is after gas purifier purifies, at coal gas Air accumulator is entered under pumping action, the most for civilian use.
The CFBB of the thermoelectricity gas Poly-generation that this utility model provides, by stirring in pyrolysis oven Mix device stirring ensure pyrolysis furnace high-temperature ash and coal be sufficiently mixed reaction, improve gas yield;Pyrolysis The pay-off of stove batcher adjusts revolution speed of screw by converter, controls discharging speed, thus controls heat The pyrolytic reaction time of coal in solution stove, it is ensured that fully react;Owing to there is no gasifying medium, can be prevented effectively from Air or other impurity enter in pyrolysis oven, it is ensured that pyrolysis oven safe operation, institute's producing coal gas cleaning and calorific value Height, meets domestic gas standard.
The CFBB of the thermoelectricity gas Poly-generation that this utility model provides, pyrolysis oven and boiler returning charge Belong to coordination, if pyrolysis oven breaks down, can directly be isolated and not affect the stable operation of boiler, System flexible operation, simple to operation;Both polygenerations systeme operation can have been carried out, it is also possible to closing Former circulating ash loop independent operating is kept, it is ensured that the independent operating state of boiler after pyrolysis oven.
Accompanying drawing explanation
Fig. 1 is the overall structure signal of the CFBB of thermoelectricity gas Poly-generation of the present utility model Figure.
Wherein, 1-boiler hearth of circulating fluidized bed;2-boiler separator;3-pyrolysis oven;4-hot ash stream device; 5-enters pyrolysis oven heat ash pipeline;6-pyrolysis oven batcher;7-returning charge inclined tube;8-spiral returning charge machine;9-coal gas Cooler;10-agitator;11-gas purifier;12-gas pump;13-air accumulator;In 14-separator Heart cylinder and exhaust pass;15-high temperature superheater;16-low temperature superheater;17-economizer;18-air preheater; 19-cleaner unit;20-desulfurizing tower;21-air-introduced machine;22-chimney;23-bellows;24-slag-drip opening.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in further detail, described in be to this The explanation of utility model rather than restriction.
The CFBB (CFB boiler) of this utility model thermoelectricity gas Poly-generation, including top even It is connected with the boiler hearth of circulating fluidized bed 1 of boiler separator 2, the top of boiler separator 2 and generating/confession Being connected to heat smoke passage of heat, bottom is communicated with hot ash stream device 4, the outlet of hot ash stream device 4 It is connected with the top of pyrolysis oven 3 by pyrolysis oven hot ash stream pipeline 5;The feeding mouth of pyrolysis oven 3 with Pyrolysis oven batcher 6 connects, and coal is vented one's spleen and dissolved mouth and connect with air accumulator 13 through coal gas transfer passage.
Concrete, heat smoke and flue dust that the burning of described boiler hearth of circulating fluidized bed 1 produces divide through boiler After device 2 separates, enter central cylinder of separator and exhaust pass 14, then sequentially pass through high temperature superheater 15, After low temperature superheater 16, economizer 17 and air preheater 18 heat exchange, through cleaner unit 19 dedusting and desulfurization After tower 20 desulfurization, enter chimney 22 by air-introduced machine 21, be ultimately discharged in air.
Further, the high-temp circulating ash that the burning of described boiler hearth of circulating fluidized bed 1 produces divides through boiler After device 2 separates, enter the hot ash stream device 4 bottom it, be further separated into pyrolysis oven 3 as solid through it Heat carrier, feeds the coal in pyrolysis oven 3 to pyrolysis oven batcher 6 and carries out pyrolytic gasification.
The high-temp circulating ash outlet of described hot ash stream device 4 includes two-way, the hot ash of pyrolysis oven of leading up to Flow tube road 5 is connected with the top of pyrolysis oven 3, separately leads up to returning charge inclined tube 7 and recirculating fluidized bed pot The bottom of stove burner hearth 1 is connected.
The top of described pyrolysis oven 3 is additionally provided with agitator 10, and the high temperature of pyrolysis oven is followed by agitator 10 Ring ash and coal carry out mix and blend.
The bottom of pyrolysis oven 3 is additionally provided with spiral returning charge machine 8, and pyrolysis oven spiral returning charge machine 8 will react Ash and pyrolysis of coal produce semicoke, by returning charge pipeline send into boiler hearth of circulating fluidized bed 1 bottom.
Concrete, the coal of described pyrolysis oven 3 is vented one's spleen and is dissolved mouth through gas cooler 9, gas purifier 11, gas pump 12 is connected with air accumulator 13.
Bellows 23 and slag-drip opening 24 it is additionally provided with bottom described boiler hearth of circulating fluidized bed 1.
Specific embodiment be given below:
Boiler hearth of circulating fluidized bed 1 top is communicated with boiler separator 2, connects bottom boiler separator 2 It is connected with hot ash stream device 4, hot ash stream device 4 outlet point two-way, leads up to returning charge inclined tube 7 and circulate The bottom of fluid bed boiler furnace 1 is connected, described hot ash stream device 4 additionally lead up to pyrolysis oven heat Ash stream pipeline 5 is connected with the top of pyrolysis oven 3, the top of pyrolysis oven 3 be also communicated with pyrolysis oven to Material machine 6 and agitator 10, pyrolysis oven 3 the most successively with gas cooler 9, gas purifier 11, coal gas Pump 12, air accumulator 13 connect.Described pyrolysis oven 7 bottom of device is provided with spiral returning charge machine 8, pyrolysis oven Spiral returning charge machine 8 is connected by the bottom of returning charge pipeline with boiler hearth of circulating fluidized bed 1.
As it is shown in figure 1, boiler oil burns in boiler hearth of circulating fluidized bed 1, produce heat energy, can To be used for generating electricity, heat supply etc.;Heat smoke and flue dust that burning produces separate through boiler separator 2, high Temperature circulating ash is separated introduces pyrolysis oven 3 as solid thermal by hot ash stream device 4 a portion Carrier, the coal feeding pyrolysis oven batcher 6 carries out pyrolytic gasification, the agitator 10 heat ash to pyrolysis oven Mix and blend is carried out, it is ensured that pyrolytic reaction is fully carried out with coal.The coal gas produced is through gas purifier 11 After purification, under gas pump 12 acts on, enter air accumulator 13, the most for civilian use.Reaction in pyrolysis oven 3 The semicoke that complete ash and pyrolysis of coal produce feeds circulating fluid bed boiler by after returning charge screw(-type) feeder 8 Thorax 1 burns.
Example given above is to realize this utility model preferably example, on this utility model is not limited to State embodiment.Those skilled in the art is made according to the technical characteristic of technical solutions of the utility model Any nonessential interpolation, replacement, belong to protection domain of the present utility model.

Claims (8)

1. the CFBB of a thermoelectricity gas Poly-generation, it is characterised in that include that top is communicated with The boiler hearth of circulating fluidized bed (1) of boiler separator (2), the top of boiler separator (2) with send out Being connected to heat smoke passage of electricity/heat supply, bottom is communicated with hot ash stream device (4), hot ash stream device (4) Outlet be connected by the top of pyrolysis oven hot ash stream pipeline (5) with pyrolysis oven (3);Pyrolysis oven (3) feeding mouth connects with pyrolysis oven batcher (6), coal vent one's spleen dissolve mouth through coal gas transfer passage with Air accumulator (13) connects.
2. the CFBB of thermoelectricity gas Poly-generation as claimed in claim 1, it is characterised in that Described includes to heat smoke passage: boiler separator (2) sequentially passes through central cylinder of separator and outlet cigarette Road (14), high temperature superheater (15), low temperature superheater (16), economizer (17) and air preheater (18) It is connected, then removing dust device (19), desulfurizing tower (20) are connected with chimney (22) with air-introduced machine (21) Connect.
3. the CFBB of thermoelectricity gas Poly-generation as claimed in claim 1, it is characterised in that The high-temp circulating ash outlet of described hot ash stream device (4) includes two-way, the hot ash stream of pyrolysis oven of leading up to Pipeline (5) is connected with the top of pyrolysis oven (3), separately leads up to returning charge inclined tube (7) and recycle stream The bottom of fluidized bed boiler burner hearth (1) is connected.
4. the CFBB of the thermoelectricity gas Poly-generation as described in claim 1 or 3, its feature exists In, the top of described pyrolysis oven (3) is additionally provided with agitator (10), and agitator (10) is to pyrolysis oven High-temp circulating ash and coal carry out mix and blend.
5. the CFBB of the thermoelectricity gas Poly-generation as described in claim 1 or 3, its feature exists In, the bottom of described pyrolysis oven (3) is additionally provided with spiral returning charge machine (8), pyrolysis oven spiral returning charge machine (8) it is connected by the bottom of returning charge pipeline with boiler hearth of circulating fluidized bed (1).
6. the CFBB of thermoelectricity gas Poly-generation as claimed in claim 1, it is characterised in that The coal of described pyrolysis oven (3) vent one's spleen dissolve mouth through gas cooler (9), gas purifier (11), Gas pump (12) is connected with air accumulator (13).
7. the CFBB of thermoelectricity gas Poly-generation as claimed in claim 1, it is characterised in that Described boiler hearth of circulating fluidized bed (1) bottom is additionally provided with bellows (23) and slag-drip opening (24).
8. the CFBB of thermoelectricity gas Poly-generation as claimed in claim 1, it is characterised in that Described boiler separator (2), pyrolysis oven (3) are set to multiple, in boiler hearth of circulating fluidized bed (1) Surrounding be uniformly distributed.
CN201620443997.2U 2016-05-16 2016-05-16 A kind of CFBB of thermoelectricity gas Poly-generation Active CN205746770U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841130A (en) * 2016-05-16 2016-08-10 华能国际电力股份有限公司 Thermal-electric poly-generation circulating fluidized bed boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841130A (en) * 2016-05-16 2016-08-10 华能国际电力股份有限公司 Thermal-electric poly-generation circulating fluidized bed boiler

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