CN209672301U - One kind liquidates tower 660MW double reheat boiler - Google Patents
One kind liquidates tower 660MW double reheat boiler Download PDFInfo
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- CN209672301U CN209672301U CN201920381602.4U CN201920381602U CN209672301U CN 209672301 U CN209672301 U CN 209672301U CN 201920381602 U CN201920381602 U CN 201920381602U CN 209672301 U CN209672301 U CN 209672301U
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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
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Abstract
One kind liquidates tower 660MW double reheat boiler, belongs to boiler technology field, and the utility model improves coal quality adaptability, while solving the problems, such as currently without the tower 660MW double reheat boiler that liquidates to reduce the combustion side deviation of double reheat boiler.Multiple groups opposed firing device is installed on the front and rear wall of furnace body lower hearth, temperature-adjusting baffle is installed at the top of furnace body, smoke outlet is equipped with above temperature-adjusting baffle, smoke outlet is connected to by flue with reactor, and flue gas recirculation system is equipped between economizer exit flue and furnace body.A kind of tower 660MW double reheat boiler that liquidates of the utility model can fill up the vacancy for the tower 660MW double reheat boiler that liquidates in field of boilers.
Description
Technical field
The utility model relates to a kind of reheat boilers, and in particular to one kind liquidates tower 660MW double reheat boiler, belongs to
Boiler technology field.
Background technique
The main operational principle of boiler is a kind of waste heat biography using in the thermal energy discharged after fuel combustion or industrial production
The water in container is passed, the heat power equipment of temperature required for reaching water or certain pressure steam.Boiler is in " pot " and " furnace "
Two parts carry out simultaneously, and water enters after boiler, and the heat transfer water supply of absorption is made water by boiler heating surface in boiler circuit
It is heated into the hot water of certain temperature and pressure or generates steam, be brought out application.In combustion apparatus part, fuel combustion is constantly put
Heat out, the high-temperature flue gas for generation of burning transfers heat to boiler heating surface by the propagation of heat, and self-temperature gradually drops
It is low, it is finally discharged by chimney, tower boiler is generally used Terms of Corner Tangential Combustion in the industry at present, in 660MW grade boiler
There are fume side deviation is big on, the problem of coal quality bad adaptability.
Utility model content
It liquidates tower 660MW double reheat boiler the purpose of the utility model is to provide one kind, to solve currently without right
Rush tower 660MW double reheat boiler problem.
One kind liquidate tower 660MW double reheat boiler include furnace body, it is opposed firing device, temperature-adjusting baffle, flue, anti-
Answer device and flue gas recirculation system；
Multiple groups opposed firing device is installed on the front and rear wall of bottom of furnace body, temperature-adjusting baffle, temperature adjustment are installed at the top of furnace body
Smoke outlet is equipped with above baffle, smoke outlet is connected to by flue with reactor, and flue gas is equipped between flue and furnace body
Recirculating system.
Preferred: opposed firing device is sequentially arranged above with mixing header, primary superheater lower part, three-level among water-cooling wall
Superheater, low-pressure final stage reheater, high pressure final reheater, two-stage superheater, high pressure low temperature reheater, low-pressure low-temperature reheating
Device, economizer and primary superheater top；High pressure low temperature reheater and low-pressure low-temperature reheater
It being arranged symmetrically, primary superheater lower part is connected to two-stage superheater, and two-stage superheater is connected to three-stagesuperheater, and one
Grade superheater lower part is connected to by tube panel with primary superheater top, and high pressure low temperature reheater is connected to high pressure final reheater,
Low-pressure low-temperature reheater is connected to low-pressure final stage reheater.
It is preferred: the cooling dividing wall of steam to be provided between high pressure low temperature reheater and low-pressure low-temperature reheater, steam is cold
But separate coping to be connected with primary superheater top, the bottom of the cooling dividing wall of steam is connected with primary superheater lower part
It is logical.
Preferred: mixing header connection is connected with Spiral Coil Waterwall and vertical water wall among the water-cooling wall,
Spiral Coil Waterwall and vertical water wall are connected to economizer, and mixing header also leads to hanging pipe among water-cooling wall,
Hanging pipe is connected to water-cooling wall outlet header, and for hanging heating surface tube panel header, water-cooling wall outlet header is also communicated with separation
Device.
Preferred: opposed firing device includes liquidate main burner and after-flame divided combustion device, is pacified on the front and rear wall of bottom of furnace body
It liquidates main burner equipped with multiple groups, after-flame divided combustion device is located at the top for the main burner that liquidates.
It is preferred: denitrification apparatus being installed in reactor, classification economizer, the bottom of reactor are installed below denitrification apparatus
Portion exit is equipped with air preheater.
Preferred: flue gas recirculation system includes recycling inlet duct, recirculation blower and recycles outlet conduit, then
One end of loop head pipeline is connected with flue, recycles the other end of inlet duct and the arrival end of recirculation blower
It is connected, the one end for recycling outlet conduit is connected with the outlet end of recirculation blower, recycles the other end of outlet conduit
Across furnace body and positioned at the lower section of opposed firing device, recycling outlet conduit, which is located on the tube wall below opposed firing device, to be provided with
Recycle spout.
The utility model has the effect that compared with existing product
1, using opposed firing mode, the deviation of inner flue gas of the stove side and combustion side is reduced；
2, it is equipped with dividing wall in furnace body, realizes that reheat steam temperature is controlled by gas baffle；
3, pass through flue gas recirculation system and the adjustable reheat steam temperature of top temperature-adjusting baffle；
4, using spirally-wound tubes+vertical water wall；
5, the ability that double reheat boiler reaches nominal steam parameter is improved；
6, the low advantage of single accurate NOx emission of burner air distribution of opposed firing mode is embodied to double reheat boiler
On；
7, the achievement can promote vapor (steam) temperature to 630 DEG C under current material system.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tower 660MW double reheat boiler that liquidates.
In figure: 1- furnace body, 2- liquidate main burner, 3- after-flame divided combustion device, mixing header, 5- level-one among 4- water-cooling wall
Superheater lower part, 6- three-stagesuperheater, 7- low-pressure final stage reheater, 8- high pressure final reheater, 9- two-stage superheater, 10- high
Press low-temperature reheater, 11- low-pressure low-temperature reheater, 12- economizer, 13- primary superheater top, 14- temperature-adjusting baffle, 15- cigarette
Feed channel, 16- reactor, 17- denitrification apparatus, 18- air preheater, 19- recycling inlet duct, 20- recirculation blower,
21- recycles outlet conduit.
Specific embodiment
The utility model preferred embodiment is elaborated below according to attached drawing.
As shown in Figure 1, one kind described in the utility model liquidates, tower 660MW double reheat boiler includes furnace body 1, liquidates
Burner, temperature-adjusting baffle 14, flue 15, reactor 16 and flue gas recirculation system；
Multiple groups opposed firing device is installed on the front and rear wall of 1 bottom of furnace body, the top of furnace body 1 is equipped with temperature-adjusting baffle 14,
Smoke outlet is equipped with above temperature-adjusting baffle 14, smoke outlet is connected to by flue 15 with reactor 16, flue 15 and furnace body 1
Between be equipped with flue gas recirculation system.
Further, opposed firing device is sequentially arranged above with mixing header 4, primary superheater lower part 5, three among water-cooling wall
Grade superheater 6, low-pressure final stage reheater 7, high pressure final reheater 8, two-stage superheater 9, high pressure low temperature reheater 10, low pressure are low
Warm reheater 11, economizer 12 and primary superheater top 13；High pressure low temperature reheater 10 and low-pressure low-temperature reheater 11 are symmetrical
Arrangement, primary superheater lower part 5 are connected to two-stage superheater 9, and two-stage superheater 9 is connected to three-stagesuperheater 6, primary superheater
Lower part 5 is connected to by tube panel with primary superheater top 13, and high pressure low temperature reheater 10 is connected to high pressure final reheater 8, low
Pressure low-temperature reheater 11 is connected to low-pressure final stage reheater 7.
Further, being provided with the cooling dividing wall of steam between high pressure low temperature reheater 10 and low-pressure low-temperature reheater 11, steam
The cooling coping that separates of vapour is connected with primary superheater top 13, under the bottom and primary superheater of the cooling dividing wall of steam
Portion 5 is connected.
Further, the connection of mixing header 4 is connected with Spiral Coil Waterwall and vertical water wall, spiral among water-cooling wall
Pipeloop water-cooling wall and vertical water wall are connected to economizer exit decline pipeline, and mixing header 4 is also connected among water-cooling wall
There is hanging to manage, separator is connected with water-cooling wall outlet header.
The connection of mixing header 4 is connected with Spiral Coil Waterwall and vertical water wall, spirally-wound tubes water among water-cooling wall
Cold wall and vertical water wall are connected to economizer, and mixing header 4 also leads to hanging pipe among water-cooling wall, hang Guan Yushui
The connection of cold wall outlet header, for hanging heating surface tube panel header, water-cooling wall outlet header is also communicated with separator.
Further, opposed firing device includes liquidate main burner 2 and after-flame divided combustion device 3, pacify on the side wall of 1 bottom of furnace body
It liquidates main burner 2 equipped with multiple groups, after-flame divided combustion device 3 is located at the top for the main burner 2 that liquidates.
Further, being equipped with denitrification apparatus 17 in reactor 16, classification economizer is installed below denitrification apparatus 17, reacts
Air preheater 18 is installed at the outlet at bottom of device 16.
Further, flue gas recirculation system includes recycling inlet duct 19, recirculation blower 20 and recycling outlet
Road 21, recycling inlet duct 19 one end be connected with flue 15, recycling inlet duct 19 the other end with follow again
The arrival end of ring blower 20 is connected, and one end of recycling outlet conduit 21 is connected with the outlet end of recirculation blower 20, then
The other end of loop exit pipeline 21 pass through furnace body 1 and be located at opposed firing device lower section, recycling outlet conduit 21 be located at pair
It rushes on the tube wall below burner and is provided with recycling spout.
Platform 660MW liquidates tower arrangement double reheat boiler headed by present embodiment, and boiler is ultra supercritical parameter
Variable-pressure operation spirally-wound tubes+vertical tube coil Once-through Boiler, single burner hearth, double reheat, using opposed firing mode, balanced draft, solid
State deslagging, all steel overhung construction, coal-fired tower boiler.Burner hearth uses full membrane type spirally-wound tubes+vertical water wall.On burner hearth
Portion is successively respectively disposed with primary superheater, finishing superheater, high pressure-temperature reheater, low-voltage high-temperature reheating along flue gas flow
Device, two-stage superheater, furnace roof separate flue surface, and (flue high pressure low temperature reheater and economizer, rear pass are low before respectively
Press low-temperature reheater and economizer).Gas proportioning damper device is provided at the top of flue separating, for distributing exhaust gas volumn, with
Keep the reheated steam outlet temperature in control load range.Flue gas is concomitantly introduced into around each one flue gas after collecting from furnace roof is de-
Nitre device introduces two trisector air heaters after denitrification apparatus reduces NOx.It is disposed in SCR flue entrance
Flue gas recycled smoking mouth, the smoking pipeline of left and right two introduces gas recirculating fan entrance mixing flue, after dilatation depositing dust
Flue gas is sent into burner hearth from burner base by three one standby gas recirculating fans of fortune.
Level-one spray desuperheating is respectively set between primary superheater and two-stage superheater, two-stage superheater and three-stagesuperheater
Device, superheater system carry out temperature adjustment using coal-water ratio+attemperator, and high-low pressure reheater system uses flue gas recirculation+tail portion cigarette
Gas baffle is main regulative mode.
After-flame divided combustion device is SOFA burner, and SOFA burner and main burner use front and back wall cross collocation form,
SOFA burner is using high-order arrangement.
Boiler feedwater is by classification economizer and separates flue economizer and enters water-cooling wall, water-cooling wall by spirally-wound tubes and
Vertical tube coil region enters water-cooling wall outlet header, and water-cooling wall outlet header enters separator, separator outlet by connecting tube
Working medium respectively enters primary superheater, two-stage superheater, three-stagesuperheater by connecting tube, finally enters the main vapour system of boiler.
The steam discharge of ultra-high pressure cylinder, which enters on the left of furnace roof, to be separated flue height and forces down inlet duct again, forced down again by height, high pressure end again into
Enter Boiler High Pressure reheating steam system.The steam discharge of high pressure cylinder, which enters on the right side of furnace roof, separates the low inlet duct again of flue low pressure, warp
It is too low force down again, low pressure end enters back into boiler low pressure reheating steam system.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (7)
- The tower 660MW double reheat boiler 1. one kind liquidates, it is characterised in that: including furnace body (1), opposed firing device, temperature adjustment gear Plate (14), flue (15), reactor (16) and flue gas recirculation system；Multiple groups opposed firing device is installed on the front and rear wall of furnace body (1) bottom, furnace body is equipped with temperature-adjusting baffle at the top of (1) (14), smoke outlet is equipped with above temperature-adjusting baffle (14), smoke outlet is connected to by flue (15) with reactor (16), fume pipe Flue gas recirculation system is equipped between road (15) and furnace body (1).
- The tower 660MW double reheat boiler 2. one kind according to claim 1 liquidates, it is characterised in that: the combustion that liquidates Burner is sequentially arranged above with mixing header (4), primary superheater lower part (5), three-stagesuperheater (6), low pressure among water-cooling wall Final reheater (7), high pressure final reheater (8), two-stage superheater (9), high pressure low temperature reheater (10), low-pressure low-temperature reheating Device (11), economizer (12) and primary superheater top (13)；High pressure low temperature reheater (10) and low-pressure low-temperature reheater (11) It is arranged symmetrically, primary superheater lower part (5) are connected to two-stage superheater (9), and two-stage superheater (9) and three-stagesuperheater (6) are even Logical, primary superheater lower part (5) are connected to by tube panel with primary superheater top (13), high pressure low temperature reheater (10) and high pressure Final reheater (8) connection, low-pressure low-temperature reheater (11) are connected to low-pressure final stage reheater (7).
- The tower 660MW double reheat boiler 3. one kind according to claim 2 liquidates, it is characterised in that: the height forces down The cooling dividing wall of steam is provided between warm reheater (10) and low-pressure low-temperature reheater (11), steam is cooling to separate coping It is connected with primary superheater top (13), the bottom of the cooling dividing wall of steam is connected with primary superheater lower part (5).
- The tower 660MW double reheat boiler 4. one kind according to claim 3 liquidates, it is characterised in that: the water-cooling wall Intermediate mixing header (4) connection is connected with Spiral Coil Waterwall and vertical water wall, Spiral Coil Waterwall and vertical tube Circle water-cooling wall is connected to economizer, and mixing header (4) also leads to hanging pipe, hanging pipe and water cooling wall outlet collection among water-cooling wall Case connection, for hanging heating surface tube panel header, water-cooling wall outlet header is also communicated with separator.
- The tower 660MW double reheat boiler 5. one kind according to claim 1 liquidates, it is characterised in that: the combustion that liquidates Burner includes liquidate main burner (2) and after-flame divided combustion device (3), is equipped with multiple groups on the front and rear wall of furnace body (1) bottom and liquidates Main burner (2), after-flame divided combustion device (3) are located at the top for main burner (2) that liquidate.
- The tower 660MW double reheat boiler 6. one kind according to claim 1 liquidates, it is characterised in that: the reactor (16) it is equipped with denitrification apparatus (17) in, classification economizer is installed below denitrification apparatus (17), the bottom of reactor (16) goes out Air preheater (18) are installed at mouthful.
- The tower 660MW double reheat boiler 7. one kind according to claim 1 liquidates, it is characterised in that: the flue gas is again The circulatory system includes recycling inlet duct (19), recirculation blower (20) and recycling outlet conduit (21), recycles entrance One end of pipeline (19) is connected with flue (15), recycles the other end and recirculation blower (20) of inlet duct (19) Arrival end be connected, recycling outlet conduit (21) one end be connected with the outlet end of recirculation blower (20), recycling The other end of outlet conduit (21) passes through furnace body (1) and is located at the lower section of opposed firing device, and recycling outlet conduit (21) is located at Recycling spout is provided on tube wall below opposed firing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920381602.4U CN209672301U (en) | 2019-03-25 | 2019-03-25 | One kind liquidates tower 660MW double reheat boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920381602.4U CN209672301U (en) | 2019-03-25 | 2019-03-25 | One kind liquidates tower 660MW double reheat boiler |
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| CN209672301U true CN209672301U (en) | 2019-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945158A (en) * | 2019-03-25 | 2019-06-28 | 哈尔滨锅炉厂有限责任公司 | One kind liquidates tower 660MW double reheat boiler |
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- 2019-03-25 CN CN201920381602.4U patent/CN209672301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945158A (en) * | 2019-03-25 | 2019-06-28 | 哈尔滨锅炉厂有限责任公司 | One kind liquidates tower 660MW double reheat boiler |
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