CN208204987U - A kind of fractional combustion supercharged oxygen-enriched boiler system - Google Patents
A kind of fractional combustion supercharged oxygen-enriched boiler system Download PDFInfo
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- CN208204987U CN208204987U CN201820630442.8U CN201820630442U CN208204987U CN 208204987 U CN208204987 U CN 208204987U CN 201820630442 U CN201820630442 U CN 201820630442U CN 208204987 U CN208204987 U CN 208204987U
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a kind of fractional combustion supercharged oxygen-enriched boiler systems, the boiler system includes the level-one boiler being connected by connecting pipe, second level boiler, three-level boiler and level Four boiler, every grade of boiler is made of combustion chamber and radiation heat transfer room, the top of combustion chamber and top side portion are respectively equipped with oxygen inlet and fuel nozzle, radiation heat transfer room is made of fin panel casing and curtain wall, fin panel casing shell and tube is arranged circumferentially in radiation heat transfer room outmost turns, all curtain wall arrangements are evenly arranged in radiation heat transfer chamber interior in hollow annular structure, the outside of boilers at different levels is equipped with pressure shell, the bottom of pressure shell and bottom side are respectively equipped with slag outlet and exhanst gas outlet, the exhanst gas outlet of upper level boiler is connected with the gas inlet of next stage boiler by connecting pipe.The fractional combustion supercharged oxygen-enriched boiler system of the utility model has the advantages that fractional combustion cooling, reaction under high pressure energy consumption is low, cost of investment is low etc..
Description
Technical field
The utility model relates to boiler oxygen-enriched combustion technology fields, more particularly, to a kind of fractional combustion supercharged oxygen-enriched boiler
System.
Background technique
CO with the aggravation of global warming and the variation of weather, as greenhouse gases principal element2Emission problem by
Gradually cause the concern in the whole world.Therefore, oxygen-enriched combustion technology is as most potential effective emission reduction CO2New combustion technique it
One, become the hot spot of global researcher's concern.In the present state-of-the technology, normal pressure oxygen-enriched combustion system mainly utilizes space division
The oxygen that system produces high concentration comes instead of air as combustion adjuvant in burner hearth and coal combustion, and exiting flue gas is through dedusting, desulfurization
After dehydration, part of smoke is recycled into burner hearth to control furnace temperature, and remaining flue gas then enters CO2Compressibility is purified, finally
The CO of outlet2It is all satisfied to send out again after pipeline transportation requires in concentration and pressure and seal up for safekeeping.
In above-mentioned combustion process, mainly has the following two problems: 1. need flue gas recirculation to control ignition temperature, from
And cause the electric quantity consumption of circulating fan provisioned in flue gas recirculation big；2. space division system and CO2Purifying compressibility was run
Cheng Zhong, gas need to undergo boosting, decompression and 3 transformation processes of boosting again, cause energy consumption higher, so as to cause net power generation effect
Rate is lower.
Therefore, under the conditions of current technology, normal pressure oxygen-enriched combustion system is because by low, higher cost of its efficiency of combustion etc.
The influence of factor causes it that cannot preferably realize commercial operations.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of fractional combustion supercharged oxygen-enriched boiler system, the boilers
System has the advantages that fractional combustion cooling, reaction under high pressure energy consumption is low, cost of investment is low etc..
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of fractional combustion supercharged oxygen-enriched boiler system
System, including at least two-stage boiler, every grade of boiler is by the combustion chamber for being located at upper boiler and positioned at the spoke of lower portion thereof
Penetrate Heat Room composition；The top of the combustion chamber and top side portion are respectively equipped with gas inlet and fuel nozzle；The radiation heat transfer
The bottom of room and bottom side are respectively equipped with slag outlet and exhanst gas outlet；The exhanst gas outlet of upper level boiler and the cigarette of next stage boiler
Gas import is connected by connecting pipe.
Further, the radiation heat transfer chamber interior is equipped with curtain wall, and the curtain wall is in hollow and annular
Structure is evenly arranged in radiation heat transfer chamber interior.
Further, the radiation heat transfer room is made of fin panel casing.
Further, the outside of the boiler at different levels is equipped with pressure shell.
Further, the bottom of the pressure shell and bottom side are respectively equipped with slag outlet and exhanst gas outlet, upper level boiler
Exhanst gas outlet be connected with the gas inlet of next stage boiler by connecting pipe.
Further, it is respectively equipped with top monkey cooler at the top and bottom of the radiation heat transfer room and lower part cinder notch is cooling
Device, the top monkey cooler are communicated with the bottom of combustion chamber.
Further, the curtain wall is radiated relative to boiler radial skew and is arranged.
Further, the inner wall of the boiler furnace at different levels is laid with refractory brick.
Further, the boiler system include by connecting pipe successively sequentially connected level-one boiler, second level boiler,
Three-level boiler and level Four boiler.
The beneficial effects of the utility model are: firstly, this boiler system can ensure that using multi-stage boilers classification oxygen-enriched combusting
Fuel in every grade of boiler is sufficiently burned, and can guarantee the efficiency of combustion of boiler system；Secondly, life of burning in level-one boiler
At high-temperature flue gas and excessive oxygen can be recycled in boiler system always, act as in normal pressure oxygen-enriched combustion boiler and recycle cigarette
The role of gas control fire box temperature, therefore, this boiler system no longer need to that a set of smoke circulating system is separately provided, to effectively keep away
Exempt from the problem that boiler system causes energy consumption big because individually preparing smoke circulating system, and then reaches reduction boiler system and build
Make the purpose of cost of investment；Furthermore by be arranged in every grade of boiler the radiation heat transfer room being made of fin panel casing and
In radiation heat transfer room be arranged curtain wall, can enable high-temperature flue gas and oxygen in the heating surface of radiation heat transfer room water supply or
Steam carries out heat exchange cooling, can achieve the purpose that control fire box temperature in this way by control flue-gas temperature, moreover it is possible to by high temperature
The heat recovery having more than needed in flue gas is got up, to improve the heat utilization rate of boiler system；In addition, also on the top of radiation heat transfer room
A top monkey cooler and lower part monkey cooler is respectively set in portion and bottom, can be further improved the temperature to high-temperature flue gas
Spend control ability；Finally, by being equipped with a pressure shell in the outside of boilers at different levels, to allow through space division system system
The pure oxygen in high pressure gas made does not need to be depressured to enter directly into the combustion chamber of supercharged steam generator to react with fuel, band
Pressure oxygen and fuel react the high-temperature flue gas with pressure of generation in the combustion chamber and remaining oxygen passes through and curtain wall and film
It after the heat exchange of formula water-cooling wall, does not need again to carry out it pressure reduction can be directly entered in next stage boiler combustion room, effectively yet
Ground is solved because pressurizeing and being depressured a large amount of power consumption issues of bring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model fractional combustion supercharged oxygen-enriched boiler system；
Fig. 2 is the structural schematic diagram of the utility model boiler；
Fig. 3 is the diagrammatic cross-section of radiation heat transfer room in the utility model boiler；
In the figure, it is marked as the combustion chamber 1-, 2- radiation heat transfer room, 3- oxygen inlet/gas inlet, 4- fuel nozzle, 5- slag
Outlet, 6- exhanst gas outlet, 7- connecting pipe, 8- curtain wall, 9- pressure shell, the top 10- monkey cooler, the lower part 11-
Monkey cooler, 13- refractory brick, 14- level-one boiler, 15- second level boiler, 16- three-level boiler, 17- level Four boiler, 18- flue gas
Outlet conduit, 19- fin panel casing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
As shown in Figure 1, Figure 2 and Figure 3, the fractional combustion supercharged oxygen-enriched boiler system of the utility model, including pass through connection
Pipeline 7 level-one boiler 14, second level boiler 15, three-level boiler 16 and level Four boiler 17 that successively sequence is connected, the pots at different levels
Furnace is formed by the combustion chamber 1 for being located at upper boiler and positioned at the radiation heat transfer room 2 of lower portion thereof；In order to be able to bear boiler
Certain combustion reaction pressure is equipped with a pressure shell 9 in the outside of boilers at different levels, to allow through space division system system
The pure oxygen in high pressure gas made is not needed to be depressured in the combustion chamber 1 that can enter directly into supercharged steam generator and be reacted with fuel,
Oxygen and fuel with pressure reacted in combustion chamber 1 generation high-temperature flue gas with pressure and remaining oxygen pass through with aftermentioned screen formula by
Behind hot face 8 and the heat exchange cooling of fin panel casing 19, do not need to carry out pressure reduction to it again that next stage pot can be directly entered yet
In furnace combustion chamber 1, efficiently solve because pressurizeing and being depressured a large amount of power consumption issues of bring.
Specifically, the top of the combustion chamber 1 of the level-one boiler 14 and top side portion are respectively equipped with oxygen inlet 3 and fuel is burnt
Mouth 4；The radiation heat transfer room 2 is made of fin panel casing 19 and curtain wall 8, and screen formula is equipped with inside radiation heat transfer room 2
Heating surface 8, the curtain wall 8 are evenly arranged in inside radiation heat transfer room 2 in hollow annular structure；Radiation heat transfer room 2
Top and bottom further respectively have a top monkey cooler 10 and lower part monkey cooler 11, wherein the top
Monkey cooler 10 is communicated with the bottom of combustion chamber 1；The bottom of the pressure shell 9 and bottom side are respectively equipped with a slag outlet
5 and exhanst gas outlet 6, the position of the exhanst gas outlet 6 is lower than 11 position of lower part monkey cooler, the exhanst gas outlet of upper level boiler
6 are connected with the gas inlet 3 of next stage boiler by the connecting pipe 7.
The curtain wall 8 is radiated relative to boiler radial skew and is arranged, can make to fly from top monkey cooler 10
Splash out the ash come, slag drops downward into the hollow and annular of 8 centre of curtain wall along 8 pipeline of curtain wall of radiation arrangement
In channel, so that it is guaranteed that ash, slag can be successfully outside 5 discharge boilers of slag outlet.In addition, be in tilted layout compared to being arranged vertically,
More heating surfaces can be placed, heat exchange amount is increased.
In addition, in order to make combustion chamber 1 be able to bear high-temp combustion reaction and avoid radiation loss, in boiler combustions at different levels
The inner wall of room is also laid with refractory brick 13 or the water wall structure with refractory material.
The operation method of the utility model fractional combustion supercharged oxygen-enriched boiler system are as follows: firstly, by all fuel according to pot
Furnace series is distributed equally, and the fuel that then number and boiler series match is distinguished by the fuel nozzle of boilers at different levels
It is sent in the combustion chamber of boilers at different levels, all oxygen needed for all fuel that burn is passed through to the oxygen of first order boiler again later
Gas import is disposably sent in the combustion chamber of first order boiler, boilers at different levels is finally carried out fractional combustion again, it may be assumed that when first
After the completion of grade boiler combustion, the flue gas of generation of burning and excessive unburned oxygen enter the burning of second level boiler, due to
Joined fuel in the boiler furnace of the second level, oxygen is further consumed, and so on, to the last level-one boiler combustion is complete
Cheng Hou, until nearly all oxygen is consumed, excessive oxygen and upper level combustion product act as the angle for controlling flue-gas temperature
Color.
It is specific: firstly, all fuel are distributed equally according to boiler series, to obtain quarter fuel, then will
The quarter fuel is respectively fed to by the fuel nozzle of level-one boiler, second level boiler, three-level boiler and level Four boiler
Level-one boiler, second level boiler, three-level boiler and level Four boiler combustion chamber in, will burn needed for all fuel and own again later
Oxygen is disposably sent in the combustion chamber of level-one boiler by the oxygen inlet of level-one boiler, finally again by level-one boiler, two
Grade boiler, three-level boiler and level Four boiler carry out fractional combustion, it may be assumed that after the completion of level-one boiler combustion, then carry out second level boiler
Burning, until level Four boiler combustion complete until.
The operation principle and process of the utility model fractional combustion supercharged oxygen-enriched boiler system is as follows:
Firstly, fuel is divided into quarter, and it is respectively fed to the combustion chamber of level Four boiler by fuel nozzle
It is interior, meanwhile, excessive oxygen required for all fuel completely burneds is disposably sent to by the oxygen inlet of level-one boiler
With fuel generation combustion reaction in the combustion chamber of level-one boiler, the high-temperature flue gas with slag and ash and remain that combustion reaction later generates
Remaining excessive oxygen can enter in radiation heat transfer room from bottom of combustion chamber through top monkey cooler, and then from lower part, cinder notch is cold
But device comes out, and is finally sent in the combustion chamber of second level boiler by exhanst gas outlet and connecting pipe again；Due to only to one
It is fed into a quarter fuel in the combustion chamber of grade boiler, and is also fed into all fuel institutes of completely burned into the combustion chamber
All oxygen needed, therefore, which can occur oxygen-enriched combusting in the combustion chamber of level-one boiler, and fuel is sufficiently burned
Fall, while correspondingly consuming part of oxygen, the flue gas and remaining excessive oxygen that combustion reaction later generates are fed to
In the combustion chamber of second level boiler, because also having a quarter fuel in second level boiler combustion room at this time, so being fed to second level
With the part of fuel oxygen-enriched combusting can occur for the excessive oxygen in boiler combustion room again, so that part of fuel full combustion is fallen,
Consume the amount of oxygen of corresponding equal portions again simultaneously, and so on, until by all fuel in the combustion chamber of level Four boiler
Completely burned is fallen, and consumes almost all of oxygen, finally big absolutely from the flue gas that the exhanst gas outlet of level Four boiler is discharged
Part is CO2, boiler system is discharged in flue gas finally by the exhanst gas outlet pipeline 18 being arranged on boiler.
The utility model fractional combustion supercharged oxygen-enriched boiler system has the beneficial effect that
Firstly, this boiler system is classified oxygen-enriched combusting using multi-stage boilers, it can ensure that the fuel in every grade of boiler is filled
Divided combustion can guarantee the efficiency of combustion of boiler system；Secondly, the high-temperature flue gas and excessive oxygen of generation of burning in level-one boiler
It can be recycled in boiler system always, act as the role of circulating flue gas control fire box temperature in normal pressure oxygen-enriched combustion boiler,
Therefore, this boiler system no longer needs to that a set of smoke circulating system is separately provided, to effectively avoid boiler system because individually preparing
Smoke circulating system and the problem for causing energy consumption big, and then achieve the purpose that reducing boiler system builds cost of investment；Again
Person, by the way that the radiation heat transfer room being made of fin panel casing and the setting screen formula in radiation heat transfer room are arranged in every grade of boiler
Heating surface, can enable high-temperature flue gas and oxygen in the heating surface of radiation heat transfer room water supply or steam carry out heat exchange cooling, this
Sample can achieve the purpose that control fire box temperature by control flue-gas temperature, moreover it is possible to the heat recovery that will be had more than needed in high-temperature flue gas
Get up, to improve the heat utilization rate of boiler system；In addition, one is also respectively set at the top and bottom of radiation heat transfer room
Top monkey cooler and lower part monkey cooler, can be further improved the temperature control capability to high-temperature flue gas；Finally, passing through
It is equipped with a pressure shell in the outside of boilers at different levels, so that the pure oxygen in high pressure gas for allowing to manufacture by space division system is not
It needs to be depressured to enter directly into the combustion chamber of supercharged steam generator and react with fuel, oxygen and fuel with pressure are in combustion chamber
It is interior reaction generate high-temperature flue gas with pressure and remaining oxygen by with aftermentioned curtain wall and fin panel casing heat exchange after,
Do not need again to carry out it pressure reduction can be directly entered in next stage boiler combustion room yet, efficiently solve because of pressurization and
It is depressured a large amount of power consumption issues of bring.
It should be understood that the above-mentioned specific embodiment of the utility model is used only for exemplary illustration or explains this reality
With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model
In the case of any modification, the equivalent replacement etc. made, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of fractional combustion supercharged oxygen-enriched boiler system, which is characterized in that including at least two-stage boiler, every grade of boiler
It is formed by the combustion chamber (1) for being located at upper boiler and positioned at the radiation heat transfer room (2) of lower portion thereof；The combustion chamber (1)
Top and top side portion are respectively equipped with gas inlet (3) and fuel nozzle (4)；The bottom of the radiation heat transfer room (2) and bottom side
It is respectively equipped with slag outlet (5) and exhanst gas outlet (6)；The gas inlet of exhanst gas outlet (6) and next stage boiler of upper level boiler
(3) it is connected by connecting pipe (7).
2. fractional combustion supercharged oxygen-enriched boiler system according to claim 1, which is characterized in that the radiation heat transfer room
(2) internal to be equipped with curtain wall (8), the curtain wall (8) is evenly arranged in radiation heat transfer in hollow annular structure
Room (2) is internal.
3. fractional combustion supercharged oxygen-enriched boiler system according to claim 1 or 2, which is characterized in that the radiation is changed
Hot cell (2) is made of fin panel casing (19).
4. fractional combustion supercharged oxygen-enriched boiler system according to claim 1, which is characterized in that outside the boilers at different levels
Portion is equipped with pressure shell (9).
5. fractional combustion supercharged oxygen-enriched boiler system according to claim 4, which is characterized in that the pressure shell (9)
Bottom and bottom side be respectively equipped with slag outlet (5) and exhanst gas outlet (6), the exhanst gas outlet (6) and next stage of upper level boiler
The gas inlet (3) of boiler is connected by connecting pipe (7).
6. fractional combustion supercharged oxygen-enriched boiler system according to claim 1, which is characterized in that the radiation heat transfer room
(2) top monkey cooler (10) and lower part monkey cooler (11), the top cinder notch are respectively equipped at the top and bottom of
Cooler (10) is communicated with the bottom of combustion chamber (1).
7. fractional combustion supercharged oxygen-enriched boiler system according to claim 2, which is characterized in that the curtain wall
(8) it radiates and arranges relative to boiler radial skew.
8. fractional combustion supercharged oxygen-enriched boiler system according to claim 1, which is characterized in that the boiler combustions at different levels
The inner wall of room is laid with refractory brick (13).
9. fractional combustion supercharged oxygen-enriched boiler system according to claim 1, which is characterized in that the boiler system packet
Containing level-one boiler (14), second level boiler (15), three-level boiler (16) and the level Four boiler being successively sequentially connected by connecting pipe
(17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820630442.8U CN208204987U (en) | 2018-04-28 | 2018-04-28 | A kind of fractional combustion supercharged oxygen-enriched boiler system |
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| CN201820630442.8U CN208204987U (en) | 2018-04-28 | 2018-04-28 | A kind of fractional combustion supercharged oxygen-enriched boiler system |
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| CN208204987U true CN208204987U (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488785A (en) * | 2018-04-28 | 2018-09-04 | 东方电气集团东方锅炉股份有限公司 | A kind of fractional combustion supercharged oxygen-enriched boiler system |
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2018
- 2018-04-28 CN CN201820630442.8U patent/CN208204987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488785A (en) * | 2018-04-28 | 2018-09-04 | 东方电气集团东方锅炉股份有限公司 | A kind of fractional combustion supercharged oxygen-enriched boiler system |
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