CN206890507U - A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace - Google Patents
A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace Download PDFInfo
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- CN206890507U CN206890507U CN201720773866.5U CN201720773866U CN206890507U CN 206890507 U CN206890507 U CN 206890507U CN 201720773866 U CN201720773866 U CN 201720773866U CN 206890507 U CN206890507 U CN 206890507U
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- gas
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- oxygen
- carbon dioxide
- supercritical carbon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace, including cyclone furnace and tail flue gas total system, cyclone furnace includes cyclone cylinder and supercritical carbon dioxide boiler；Tail flue gas total system includes SCR denitration device, deduster, gas-gas heat exchanger, condenser, first order compressor, air-separating plant, cooler, high stage compressor, flue gas mixing arrangement and pulverized coal preparation system, and oxygen-enriched combustion technology is generated electricity and organically combined by the cyclone furnace with supercritical carbon dioxide power cycle.
Description
Technical field
The utility model belongs to advanced efficient field of thermal power, is related to a kind of oxygen-enriched combusting supercritical carbon dioxide whirlwind
Stove.
Background technology
In recent years, greenhouse effects problem has turned into the focus of global concern.Largely arranged in fossil fuel energy conversion process
The CO put2The main reason for being aggravation greenhouse effects.In China, coal-fired thermal power generation is CO2One of maximum emission source, research
It is important that exploitation New type coal base fuel power generation function technology utilizes and alleviated greenhouse effects to have to the clean and effective of coal resources in China
Meaning.
The maximum advantage of oxygen-enriched combustion technology is in the CO in it can directly trap flue gas2Liquefaction is compressed it to seal up for safekeeping
Or he uses, while there is CO2Cost recovery is low, NOxDischarge low advantage, it is considered to be the most CO of application prospect2Emission reduction
Technology.
In addition, the cycle efficieny for improving constantly electricity generation system is always the eternal theme of power industry research.Electricity generation system
Cycle efficieny it is higher, the energy consumption of unit generated energy is lower, corresponding pollutant and CO2Discharge capacity is lower.For tradition
The generating set using steam Rankine cycle as energy conversion system, if improve generating efficiency to 50% or so, need main steaming
Vapour parameter is improved to 700 DEG C, and this, which means that, needs to spend high economic cost and time cost to research and develop new Ni-based conjunction
Golden material.In order to avoid the technical bottleneck in terms of material, sight is transferred to the new type power circulatory system by scholars one after another, with
Phase realizes the lifting of generating efficiency.By the substantial amounts of early-stage Study of scholars and demonstration, current universally recognized supercritical CO2
Brayton cycle is the new ideas advanced power systems of great potential.This is mainly due to supercritical CO2With energy density it is big,
The features such as heat transfer efficiency is high, supercritical CO2Brayton cycle efficient power generation system can reach conventional in 620 DEG C of temperature ranges
The efficiency that 700 DEG C of steam Rankine cycle, it is no longer necessary to develop new high-temperature nickel-base alloy, and equipment size is less than same parameter
Steam unit, economy are very good.
If it is possible to develop a kind of new electricity generation system, the system can be by oxygen-enriched combustion technology and overcritical
Carbon dioxide power cycle generation technology is organically combined, then a new technology will necessarily be brought to China's coal fired power generation
Revolution.But at present on employed in coal derived fuel supercritical carbon dioxide cycle generating system in published report
Boiler is all based on air-breathing, such as Chinese patent 201520152457.4 and 201610038208.1, also there have been no and adopts
With the report of oxygen-enriched combusting.
Utility model content
A kind of the shortcomings that the purpose of this utility model is to overcome above-mentioned prior art, there is provided oxygen-enriched combusting overcritical two
Oxygen-enriched combustion technology is generated electricity and organically tied by carbonoxide cyclone furnace, the cyclone furnace with supercritical carbon dioxide power cycle
Close.
To reach above-mentioned purpose, oxygen-enriched combusting supercritical carbon dioxide cyclone furnace described in the utility model includes cyclone furnace
And tail flue gas total system, cyclone furnace include cyclone cylinder and supercritical carbon dioxide boiler；
Tail flue gas total system includes SCR denitration device, deduster, gas-to-gas heat exchanger, condenser, the first order
Compressor, air-separating plant, cooler, high stage compressor, flue gas mixing arrangement and pulverized coal preparation system；
Primary air nozzle and overfiren air port, the outlet of cyclone cylinder and entering for supercritical carbon dioxide boiler are provided with cyclone cylinder
Mouth is connected, and the outlet of overcritical titanium dioxide boiler is connected through SCR denitration device with the entrance of deduster, the outlet of deduster
It is divided into two-way, wherein the cold side through gas-to-gas heat exchanger is connected with the heat release side entrance of condenser all the way, another way and flue gas
The entrance of mixing arrangement is connected；The exhanst gas outlet of condenser heat rejection side is divided into two-way, wherein, all the way through first order compressor with
The cold side of cooler is connected, and the heat absorbing side through gas-to-gas heat exchanger is connected another way with the smoke inlet of pulverized coal preparation system successively
Logical, the nitrogen outlet of air-separating plant is connected with the heat absorption side entrance of condenser, the oxygen outlet of air-separating plant according to
The secondary heat absorbing side of heat absorbing side and gas-to-gas heat exchanger through cooler is connected with the entrance of flue gas mixing arrangement, air separation dress
The nitrogen outlet put is connected with the heat absorbing side of condenser, and the outlet of pulverized coal preparation system is connected with the primary air nozzle of cyclone cylinder, cigarette
The outlet of gas mixing arrangement is connected with the overfiren air port of cyclone cylinder.
The cold side of cooler is communicated with high stage compressor.
The oxygen outlet of air-separating plant the heat absorbing side through cooler, the heat absorbing side of gas-to-gas heat exchanger and follows again successively
Ring blower fan is connected with the entrance of pulverized coal preparation system.
Gas recirculating fan is provided between the outlet of deduster and the entrance of flue gas mixing arrangement.
The heat release side outlet of gas-to-gas heat exchanger is connected through air-introduced machine with the heat release side entrance of cooler.
Supercritical carbon dioxide boiler includes being sequentially connected logical burner hearth, horizontal flue and back-end ductwork, wherein, cyclone cylinder
Outlet be connected with the entrance of burner hearth, horizontal flue interior edge flue gas circulation direction be disposed with pendant superheater and high temperature
Reheater, back-end ductwork are sequentially provided with low-temperature reheater and gas cooler along the direction that flue gas circulates, wherein, in back-end ductwork
Low temperature superheater is additionally provided with, wherein, low temperature superheater is arranged in juxtaposition with low-temperature reheater.
Cyclone cylinder liquidates arrangement using lateral wall arrangement, bilateral chamber or bilateral wall does not liquidate arrangement.
The utility model has the advantages that：
Oxygen-enriched combusting supercritical carbon dioxide cyclone furnace described in the utility model uses cyclone furnace, and the cyclone furnace includes
Cyclone cylinder and supercritical carbon dioxide boiler, oxygen is isolated by air-separating plant, and pass through supercritical carbon dioxide pot
A part of high-temperature flue gas is preheated to the oxygen caused by stove, then the oxygen after preheating and another part high-temperature flue gas are carried out
It is sent to after mixing in the overfiren air port of cyclone cylinder, so as to realize oxygen-enriched combustion technology and supercritical carbon dioxide power cycle skill
The combination of art, give full play of oxygen-enriched combusting and be easy to trap the CO in recovered flue gas2Generated electricity with supercritical carbon dioxide and be
The advantages of cycle efficieny of uniting is high.In addition, the characteristics of cyclone furnace high-temp combustion and slag tap, can make in oxygen-enriched combusting combustion adjuvant
Oxygen concentration improves, simultaneously because cyclone furnace has very high retention efficiency so that the share of flying dust greatly reduces in flue gas, reduces
The burden of flue gas ash removal, while the coal dust that cyclone furnace is used only needs simple crushing, particle diameter is no more than 5mm, can greatly simplify system
Powder system, powder power consumption processed is saved, the cost saved can be used to compensate for the power consumption of air-separating plant, so as to reduce oxygen-enriched combusting
Operating cost.Pulverized coal preparation system is used with CO2Flue gas recycled based on gas carries out the drying of coal dust and conveying, CO2Belong to
Inert gas, therefore, the temperature of coal pulverizer outlet are not limited and are improved by existing pulverized coal preparation system, so as to be advantageous to improve
The output of coal pulverizer.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1 it is cyclone cylinder, 2 be primary air nozzle, 3 is overfiren air port, 4 for once gas radiation heating-surface, 5 are secondary gas
Radiation heating-surface, 6 be pendant superheater, 7 be high temperature reheater, 8 be low-temperature reheater, 9 be low temperature superheater, 10 be that flue gas is cold
But device, 11 be SCR denitration device, 12 be deduster, 13 be gas-to-gas heat exchanger, 14 be air-introduced machine, 15 be condenser, 16 be
Stage compressor, 17 be air-separating plant, 18 be cooler, 19 be high stage compressor, 20 be gas recirculating fan, 21
It is recirculation blower for flue gas mixing arrangement, 22,23 is pulverized coal preparation system.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, oxygen-enriched combusting supercritical carbon dioxide cyclone furnace described in the utility model includes cyclone furnace and afterbody
Smoke gas comprehensive treatment system, cyclone furnace include cyclone cylinder 1 and supercritical carbon dioxide boiler；Tail flue gas total system bag
Include SCR denitration device 11, deduster 12, gas-to-gas heat exchanger 13, condenser 15, first order compressor 16, air-separating plant
17th, cooler 18, high stage compressor 19, flue gas mixing arrangement 21 and pulverized coal preparation system 23；Primary air nozzle is provided with cyclone cylinder 1
2 and overfiren air port 3, the outlet of cyclone cylinder 1 be connected with the entrance of supercritical carbon dioxide boiler, overcritical titanium dioxide boiler
Outlet is connected through SCR denitration device 11 with the entrance of deduster 12, and the outlet of deduster 12 is divided into two-way, wherein passing through all the way
The cold side of gas-to-gas heat exchanger 13 is connected with the heat release side entrance of condenser 15, and another way enters with flue gas mixing arrangement 21
Mouth is connected；The exhanst gas outlet of the cold side of condenser 15 is divided into two-way, wherein, all the way through first order compressor 16 and cooler 18
Cold side be connected, heat absorbing side of the another way successively through gas-to-gas heat exchanger 13 is connected with the smoke inlet of pulverized coal preparation system 23,
The nitrogen outlet of air-separating plant 17 is connected with the heat absorption side entrance of condenser 15, the oxygen outlet of air-separating plant 17
The heat absorbing side of heat absorbing side and gas-to-gas heat exchanger 13 successively through cooler 18 is connected with the entrance of flue gas mixing arrangement 21, empty
The nitrogen outlet of air separation 17 is connected with the heat absorbing side of condenser 15, the outlet of pulverized coal preparation system 23 and the one of cyclone cylinder 1
Secondary air port 2 is connected, and the outlet of flue gas mixing arrangement 21 is connected with the overfiren air port 3 of cyclone cylinder 1.Wherein, cyclone cylinder 1 uses
Lateral wall arrangement, bilateral chamber liquidate arrangement or bilateral wall does not liquidate arrangement.
The cold side of cooler 18 is communicated with high stage compressor 19；The oxygen outlet of air-separating plant 17 is successively through cold
But the heat absorbing side of device 18, the heat absorbing side of gas-to-gas heat exchanger 13 and recirculation blower 22 are connected with the entrance of pulverized coal preparation system 23；Remove
Gas recirculating fan 20 is provided between the outlet of dirt device 12 and the entrance of flue gas mixing arrangement 21；Gas-to-gas heat exchanger 13 is put
Hot side outlet is connected through air-introduced machine 14 with the heat release side entrance of cooler 18.
Supercritical carbon dioxide boiler includes being sequentially connected logical burner hearth, horizontal flue and back-end ductwork, wherein, cyclone cylinder
1 outlet is connected with the entrance of burner hearth, and the direction of horizontal flue interior edge flue gas circulation is disposed with pendant superheater 6 and height
Warm reheater 7, back-end ductwork are sequentially provided with low-temperature reheater 8 and gas cooler 10 along the direction that flue gas circulates, wherein, afterbody
Low temperature superheater 9 is additionally provided with flue, wherein, low temperature superheater 9 is arranged in juxtaposition with low-temperature reheater 8.
Specific work process of the present utility model is：
The direction of burner hearth interior edge flue gas circulation is sequentially arranged once gas radiation heating-surface 4 and secondary gas radiation heating-surface 5；
Coal base supercritical CO2The cold side outlet of cryogenic regenerator is divided into two-way in Brayton cycle electricity generation system, wherein one
Road is connected with the entrance of gas cooler 10, another way and coal base supercritical CO2Brayton cycle electricity generation system high temperature is returned
The cold side input port of hot device is connected, the outlet of gas cooler 10 and coal base supercritical CO2It is high in Brayton cycle electricity generation system
The cold side outlet port of warm regenerator is connected by the entrance of pipeline and Guan Houyu once gas radiation heating-surface 4；
Once the outlet of gas radiation heating-surface 4 is connected with the entrance of low temperature superheater 9, the outlet of low temperature superheater 9 with
The entrance of pendant superheater 6 is connected, outlet and the coal base supercritical CO of pendant superheater 62In Brayton cycle electricity generation system
The entrance of high pressure turbine be connected；
Coal base supercritical CO2The outlet of Brayton cycle electricity generation system mesohigh turbine and secondary gas radiation heating-surface 5
Entrance is connected, and the outlet of secondary gas radiation heating-surface 5 is connected with the entrance of low-temperature reheater 8, the outlet of low-temperature reheater 8 and
The entrance of high temperature reheater 7 is connected, outlet and the coal base supercritical CO of high temperature reheater 72In Brayton cycle electricity generation system
Low pressure turbine be connected.
Supercritical CO2Brayton cycle electricity generation system includes forecooler, main compressor, recompression machine, cryogenic regenerator, height
Warm regenerator, boiler, high pressure turbine, low pressure turbine and generator；The hot side outlet of cryogenic regenerator is divided into two-way, wherein all the way
Pre-cooled device is connected with the entrance of main compressor, and the outlet of main compressor is connected with the cold side input port of cryogenic regenerator, separately
It is connected all the way with recompressing the entrance of machine, after recompressing the outlet of machine and the cold side outlet port of cryogenic regenerator by pipeline and pipe
It is connected with the cold side input port of high temperature regenerator, the entrance phase of the cold side outlet port of high temperature regenerator and once gas radiation heating-surface 4
Connection, the once outlet of gas radiation heating-surface 4 are connected with the entrance of low temperature superheater 9, outlet and the screen formula of low temperature superheater 9
The entrance of superheater 6 is connected, outlet and the coal base supercritical CO of pendant superheater 62Height in Brayton cycle electricity generation system
The entrance of pressure turbine is connected, and the outlet of high pressure turbine is connected with the entrance of secondary gas radiation heating-surface 5, secondary gas radiate by
The outlet in hot face 5 is connected with the entrance of low-temperature reheater 8, and the outlet of low-temperature reheater 8 is connected with the entrance of high temperature reheater 7
It is logical, outlet and the coal base supercritical CO of high temperature reheater 72The entrance of low pressure turbine in Brayton cycle electricity generation system is connected
Logical, the outlet of low pressure turbine is connected with the hot side entrance of high temperature regenerator, hot side outlet and the low temperature backheat of high temperature regenerator
The hot side entrance of device is connected, and the output shaft of low pressure turbine is connected with the drive shaft of generator.
Fuel high-temperature flue gas caused by burning in cyclone cylinder 1 flows through once gas radiation heating-surface 4, the radiation of secondary gas successively
Heating surface 5, pendant superheater 6, high temperature reheater 7, low-temperature reheater 8, low temperature superheater 9 and gas cooler 10 are changed
Heat, subsequently enter in SCR denitration device 11, be divided into two-way after the flue gas removing dust device 12 come out from SCR denitration device 11, wherein
Flow through gas-to-gas heat exchanger 13 successively all the way and air-introduced machine 14 is entered in condenser 15, in condenser 15, flue gas is with coming from sky
The nitrogen of air separation 17 is exchanged heat so that Water vapor condensation in flue gas and remove, condensed device 15 be dehydrated after cigarette
Gas is separated into two-way, is entered wherein entering all the way after gas-to-gas heat exchanger 13 heats by recirculation blower 22 in pulverized coal preparation system 23,
Another way flue gas enters first order compressor 16, is entered back into after the boosting of first order compressor 16 in cooler 18 with coming from air
High stage compressor 19 is entered back into after the oxygen heat exchange of separator 17, flue gas forms liquid after the compression of high stage compressor 1919
State CO2, now SO in flue gas2Partial pressure be also significantly increased, so as to possess the possibility further recycled, from except
The another way flue gas that the outlet manifold of dirt device 12 goes out enters flue gas mixing arrangement 21 by gas recirculating fan 20；From air point
From device 17 oxygen enter successively after cooler 18 and gas-to-gas heat exchanger 13 preheat flue gas mixing arrangement 21 with from deduster
The flue gas recycled that 12 outlet manifolds go out enters the overfiren air port 3 of cyclone cylinder 1 after being sufficiently mixed, from pulverized coal preparation system 23
Dry flue gas carries the primary air nozzle 2 that breeze airflow enters cyclone cylinder 1.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
The utility model processed, all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements done etc.,
It should be included within the scope of protection of the utility model.
Claims (7)
1. a kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace, it is characterised in that including cyclone furnace and tail flue gas General Office
Reason system, cyclone furnace include cyclone cylinder (1) and supercritical carbon dioxide boiler；
Tail flue gas total system includes SCR denitration device (11), deduster (12), gas-to-gas heat exchanger (13), condenser
(15), first order compressor (16), air-separating plant (17), cooler (18), high stage compressor (19), flue gas mixing dress
Put (21) and pulverized coal preparation system (23)；
Primary air nozzle (2) and overfiren air port (3), the outlet of cyclone cylinder (1) and supercritical carbon dioxide are provided with cyclone cylinder (1)
The entrance of boiler is connected, entrance phase of the outlet through SCR denitration device (11) with deduster (12) of overcritical titanium dioxide boiler
Connection, the outlet of deduster (12) are divided into two-way, wherein the cold side all the way through gas-to-gas heat exchanger (13) and condenser (15)
Heat release side entrance is connected, and another way is connected with the entrance of flue gas mixing arrangement (21)；The flue gas of condenser (15) cold side
Outlet is divided into two-way, wherein, it is connected all the way through first order compressor (16) with the cold side of cooler (18), another way is successively
Heat absorbing side through gas-to-gas heat exchanger (13) is connected with the smoke inlet of pulverized coal preparation system (23), the nitrogen of air-separating plant (17)
Gas outlet is connected with the heat absorption side entrance of condenser (15), and the oxygen outlet of air-separating plant (17) is successively through cooler
(18) heat absorbing side and the heat absorbing side of gas-to-gas heat exchanger (13) is connected with the entrance of flue gas mixing arrangement (21), air separation
The nitrogen outlet of device (17) is connected with the heat absorbing side of condenser (15), outlet and the cyclone cylinder (1) of pulverized coal preparation system (23)
Primary air nozzle (2) is connected, and the outlet of flue gas mixing arrangement (21) is connected with the overfiren air port (3) of cyclone cylinder (1).
2. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that cooler (18)
Cold side is communicated with high stage compressor (19).
3. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that air-separating plant
(17) heat absorbing side, the heat absorbing side and recirculation blower of gas-to-gas heat exchanger (13) of the oxygen outlet successively through cooler (18)
(22) entrance with pulverized coal preparation system (23) is connected.
4. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that deduster (12)
Gas recirculating fan (20) is provided between outlet and the entrance of flue gas mixing arrangement (21).
5. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that gas-to-gas heat exchanger
(13) heat release side outlet is connected through air-introduced machine (14) with the heat release side entrance of cooler (18).
6. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that overcritical titanium dioxide
Carbon boiler includes being sequentially connected logical burner hearth, horizontal flue and back-end ductwork, wherein, the outlet of cyclone cylinder (1) and entering for burner hearth
Mouth is connected, and the direction of horizontal flue interior edge flue gas circulation is disposed with pendant superheater (6) and high temperature reheater (7), tail
Portion's flue is sequentially provided with low-temperature reheater (8) and gas cooler (10) along the direction that flue gas circulates, wherein, in back-end ductwork also
Provided with low temperature superheater (9), wherein, low temperature superheater (9) is arranged in juxtaposition with low-temperature reheater (8).
7. oxygen-enriched combusting supercritical carbon dioxide cyclone furnace according to claim 1, it is characterised in that cyclone cylinder (1) is adopted
Arranged with lateral wall, bilateral chamber liquidates arrangement or bilateral wall does not liquidate arrangement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720773866.5U CN206890507U (en) | 2017-06-29 | 2017-06-29 | A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720773866.5U CN206890507U (en) | 2017-06-29 | 2017-06-29 | A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace |
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ID=61298194
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| CN201720773866.5U Expired - Fee Related CN206890507U (en) | 2017-06-29 | 2017-06-29 | A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191921A (en) * | 2017-06-29 | 2017-09-22 | 华能国际电力股份有限公司 | A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace |
| CN113339785A (en) * | 2020-02-18 | 2021-09-03 | 上海电力大学 | Oxygen-enriched combustion system of coal-fired power plant |
-
2017
- 2017-06-29 CN CN201720773866.5U patent/CN206890507U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191921A (en) * | 2017-06-29 | 2017-09-22 | 华能国际电力股份有限公司 | A kind of oxygen-enriched combusting supercritical carbon dioxide cyclone furnace |
| CN107191921B (en) * | 2017-06-29 | 2023-05-05 | 华能国际电力股份有限公司 | Oxygen-enriched combustion supercritical carbon dioxide cyclone furnace |
| CN113339785A (en) * | 2020-02-18 | 2021-09-03 | 上海电力大学 | Oxygen-enriched combustion system of coal-fired power plant |
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