CN211822328U - Double-pressure waste heat boiler - Google Patents
Double-pressure waste heat boiler Download PDFInfo
- Publication number
- CN211822328U CN211822328U CN202020142819.2U CN202020142819U CN211822328U CN 211822328 U CN211822328 U CN 211822328U CN 202020142819 U CN202020142819 U CN 202020142819U CN 211822328 U CN211822328 U CN 211822328U
- Authority
- CN
- China
- Prior art keywords
- pressure
- heat boiler
- waste heat
- medium
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002918 waste heat Substances 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 230000035939 shock Effects 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims description 30
- 230000005855 radiation Effects 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 2
- 238000004140 cleaning Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses a two pressure exhaust-heat boiler, it belongs to boiler manufacturing technical field. The steam pressure control device overcomes the defect that the output steam pressure of the traditional waste heat boiler in the prior art is single. The main structure of the low-pressure horizontal type natural circulation waste heat boiler comprises a medium-pressure horizontal type natural circulation waste heat boiler, a low-pressure horizontal type deoxidizing section waste heat boiler and a shock wave ash removal device, wherein the medium-pressure horizontal type natural circulation waste heat boiler is communicated with the low-pressure horizontal type deoxidizing section waste heat boiler; the shock wave ash cleaning device is arranged on two sides of the low-pressure convection heating surface. The utility model discloses mainly used provides steam for the factory.
Description
The technical field is as follows:
the utility model belongs to the technical field of the boiler is made, specifically speaking especially relates to a two pressure exhaust-heat boiler.
Background art:
at present, waste heat boilers are widely applied in the boiler industry, and the position of the waste heat boilers in the environmental protection strategy of energy conservation and emission reduction is indispensable. The waste heat boiler takes the heat of the high-temperature flue gas for use, and the energy utilization efficiency is improved. The medium and small waste heat boilers generally adopt a single drum structure, the boiler type needs to be provided with high, medium and low section energy-saving devices or two-stage energy-saving devices, and the output steam pressure is single.
In the waste heat boiler matched with the 100t electric arc furnace in the prior art, steam generated by the waste heat boiler is sent to the existing steam heat accumulator in a plant area, and is conveyed to a steam pipe network in the plant area after being stabilized, so that the steam pressure is higher; because the feed water entering the waste heat boiler needs steam to remove oxygen, a deaerator is arranged, and the steam pressure required by the deaerator is lower; when different steam pressures are used, the flue gas temperature is less easily controlled in the low steam pressure section.
The invention content is as follows:
the to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a two pressure exhaust-heat boiler, its two pressure operation strengthen afterbody high temperature and press the heat transfer, are suitable for the big operating mode of flue gas volumn change.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
a double-pressure waste heat boiler comprises a medium-pressure horizontal natural circulation waste heat boiler, a low-pressure horizontal deoxidizing section waste heat boiler and a shock wave ash removal device, wherein the medium-pressure horizontal natural circulation waste heat boiler is communicated with the low-pressure horizontal deoxidizing section waste heat boiler; the shock wave ash cleaning device is arranged on two sides of the low-pressure convection heating surface.
Preferably, the medium-pressure horizontal natural circulation waste heat boiler comprises a natural circulation radiation heating surface, a steel structure, a medium-pressure steam pocket, a medium-pressure convection heating surface and a two-stage energy saver, wherein the natural circulation radiation heating surface is arranged below the steel structure and is communicated with the medium-pressure steam pocket through a communicating pipe; the low-pressure convection heating surface is arranged in the middle of the two-stage energy saver.
Preferably, the natural circulation radiation heating surface is provided with a left smoke chamber and a right smoke chamber, the lower side of the left smoke chamber is provided with a smoke inlet, the lower side of the right smoke chamber is provided with a smoke outlet, and the left smoke chamber and the right smoke chamber are communicated through a smoke communication port at the upper end.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model can generate steam with different pressures, high-pressure steam is sent into the existing steam heat accumulator in the plant area, and is conveyed to a steam pipe network in the plant area after being stabilized, and low-pressure steam enters the deaerator, so that the content of feed water oxygen is reduced, and the water quality requirement of the safe operation of the waste heat boiler is met; because the working medium temperature of the low-pressure horizontal type deoxidization section waste heat boiler is low, and the flue gas temperature is high, higher temperature pressure is easy to form, heat transfer is facilitated, and meanwhile, because respective working medium channels of the double-pressure waste heat boiler are independent, the flue gas temperature is easier to control.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of D-D in fig. 1.
In the figure: 1. a natural circulation radiation heating surface; 2. a steel structure; 3. a medium pressure steam drum; 4. a medium pressure convection heating surface; 5. a low pressure steam drum; 6. a down pipe; 7. a riser pipe; 8. a deaerator; 9. an energy saver; 10. a low pressure convection heating surface; 11. a shock wave ash removal device; 12. a communicating pipe; 13. an oxygen removal head; 14. a flue gas inlet; 15. a flue gas outlet; 16. a medium pressure side downcomer.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Example 1:
as shown in fig. 1, a double-pressure waste heat boiler comprises a medium-pressure horizontal natural circulation waste heat boiler, a low-pressure horizontal deoxidizing section waste heat boiler and a shock wave ash removal device 11, wherein a flue in the medium-pressure horizontal natural circulation waste heat boiler is communicated with a flue in the low-pressure horizontal deoxidizing section waste heat boiler, but working medium channels of the flues are independent, the low-pressure horizontal deoxidizing section waste heat boiler comprises a low-pressure steam drum 5, a deaerator 8 and a low-pressure convection heating surface 10, the low-pressure steam drum 5 is of a horizontal structure, the low-pressure steam drum 5 is communicated with the low-pressure convection heating surface 10 through an ascending pipe 7 and a descending pipe 6, and the low-pressure steam drum 5 is further communicated with the deaerator 8.
The low-pressure steam drum 5 generates low-pressure steam and supplies the low-pressure steam to the deaerator 8, a working medium is independent relative to a working medium of the medium-pressure horizontal natural circulation waste heat boiler, a deaerator head 13 is arranged above the deaerator 8, and the deaerator head 13 is connected with the deaerator 8 through a flange; an external steam interface is reserved on a deaerating head 13 or a pipeline of the deaerator 8 so as to perform external steam deaerating when the boiler is started in a cold state and self deaerating is insufficient in a low load state, the flow of a low-temperature working medium in the low-pressure convection heating surface 10 is increased during a flue gas peak, the temperature of the flue gas is controlled not to be over-temperature, otherwise, the flow is reduced, and the temperature entering a gravity dust chamber is not too low; the tubes of the low-pressure convection heating surface 10 adopt a light pipe and serpentine tube bundle structure.
Example 2:
a kind of double-pressure exhaust-heat boiler, the said medium-pressure horizontal natural circulation exhaust-heat boiler includes the natural circulation radiation heated surface 1, steel structure 2, medium-pressure steam pocket 3, medium-pressure convection heated surface 4 and two-stage energy-saving appliance 9, the said natural circulation radiation heated surface 1 is installed below steel structure 2, the natural circulation radiation heated surface 1 is divided into two rooms, suspend on steel structure 2, it is the structure of membrane type water-cooled wall, there are eight layers of rigid beams and shake-stopping devices in the direction of height, have guaranteed that the heated surface has sufficient rigidity; the upper header and the lower header of the natural circulation radiation heating surface 1 are communicated with the medium-pressure steam drum 3 through a communicating pipe 12, the medium-pressure convection heating surface 4 is arranged below the medium-pressure steam drum 3, the medium-pressure convection heating surface 4 is communicated with the natural circulation radiation heating surface 1 through the medium-pressure steam drum 3 and a medium-pressure side downcomer 16, that is, as shown in fig. 2, the medium-pressure convection heating surface 4 is communicated with the medium-pressure steam drum 3 through the medium-pressure side downcomer 16, and the medium-pressure side downcomer 16 is used for a pipeline from natural circulation water to the natural circulation radiation heating surface 1. The low-pressure convection heating surface 10 is arranged in the middle of the two-stage economizer 9. The shock wave ash removal devices 11 are provided with a plurality of shock wave ash removal devices 11, the shock wave ash removal devices 11 are arranged on two sides of the low-pressure convection heating surface 10, and the shock wave ash removal devices 11 are also arranged between the medium-pressure convection heating surfaces 4 of each group.
The medium-pressure steam pocket 3 is arranged on the right side of the natural circulation radiation heating surface 1, is arranged above the medium-pressure convection heating surface 4, is arranged outside a flue, is not heated and can freely expand; the medium-pressure convection heating surface 4 is a flag type heating surface, is designed to be bent side by side, is convenient for ash falling, is designed to be in a left-middle-right three-group assembly form, the flag type heating surface is assembled with an upper collecting box and a lower collecting box, every two heating surfaces are symmetrically arranged to be one group, and can be arranged in a plurality of groups, only the ascending pipe 7 and the descending pipe 6 need to be connected with the collecting box and the medium-pressure steam drum 3 on site, the construction is simple, the workload is small, and the installation quality is easy to guarantee. Two stages of energy-saving devices 9 are arranged at the tail part, in order to prevent the energy-saving devices 9 from accumulating dust, the tubes of the energy-saving devices 9 adopt a light tube type, a snakelike tube bundle structure and countercurrent heat exchange, and an access door and a shock wave dust cleaning device 11 are arranged in front of each stage of energy-saving devices 9. The pipe of the energy saver 9 is fixed in front of the steel structure 2 through a pore plate, the inner layer is sealed by a steel plate, and the outer side is insulated by the aluminum silicate fiber, so that tight sealing is ensured.
The natural circulation radiation heating surface 1 is provided with a left smoke chamber and a right smoke chamber, the lower side of the left smoke chamber is provided with a smoke inlet 14, the lower side of the right smoke chamber is provided with a smoke outlet 15, and the left smoke chamber and the right smoke chamber are communicated through a smoke communicating port at the upper end. The other portions are the same as in example 1.
The whole boiler adopts a suspension structure, expands freely downwards, and in order to ensure that each heating surface can expand freely, a nonmetal expansion joint is arranged between the natural circulation radiation heating surface 1 and the medium-pressure convection heating surface 4, and a metal expansion joint is arranged between the medium-pressure convection heating surface 4 and the energy saver 9.
The utility model discloses the monolithic mounting is on the basic platform from ground, and low pressure horizontal deoxidization section exhaust-heat boiler is single drum natural circulation, and medium pressure horizontal natural circulation exhaust-heat boiler is single drum natural circulation, and flue formula structural arrangement, flue gas receive heat surface 1, exhanst gas outlet 15, medium pressure convection heating surface 4, two-stage energy-saving appliance 9 through natural circulation radiation in proper order. Because the smoke dust adhesion of the steel-making smoke is strong, in order to ensure the safe operation of convection heating, the temperature of the smoke at the inlet of the medium-pressure convection heating surface 4 is ensured to be less than 800 ℃ by arranging enough natural circulation radiation heating surfaces 1. An inspection door and an overhaul ash cleaning space are reserved between each stage of convection heat transfer surface, and the shock wave ash cleaning devices 11 are installed, so that the number of the shock wave ash cleaning devices ensures that each stage of convection heat transfer surface can be within the effective ash cleaning range of the shock wave ash cleaning devices 11, and an ideal ash cleaning effect is achieved.
Claims (3)
1. A double-pressure waste heat boiler is characterized in that: the device comprises a medium-pressure horizontal natural circulation waste heat boiler, a low-pressure horizontal deoxidizing section waste heat boiler and a shock wave ash removal device (11), wherein the medium-pressure horizontal natural circulation waste heat boiler is communicated with the low-pressure horizontal deoxidizing section waste heat boiler, the low-pressure horizontal deoxidizing section waste heat boiler comprises a low-pressure steam drum (5), a deaerator (8) and a low-pressure convection heating surface (10), the low-pressure steam drum (5) is of a horizontal structure, the low-pressure steam drum (5) is communicated with the low-pressure convection heating surface (10) through an ascending pipe (7) and a descending pipe (6), and the low-pressure steam drum (5) is further communicated with the deaerator (8); the shock wave ash removal device (11) is arranged on two sides of the low-pressure convection heating surface (10).
2. The dual pressure waste heat boiler of claim 1, characterized in that: the medium-pressure horizontal natural circulation waste heat boiler comprises a natural circulation radiation heating surface (1), a steel structure (2), a medium-pressure steam drum (3), a medium-pressure convection heating surface (4) and a two-stage energy saver (9), wherein the natural circulation radiation heating surface (1) is arranged below the steel structure (2), the natural circulation radiation heating surface (1) is communicated with the medium-pressure steam drum (3) through a communicating pipe (12), the medium-pressure convection heating surface (4) is arranged below the medium-pressure steam drum (3), and the medium-pressure convection heating surface (4) is communicated with the natural circulation radiation heating surface (1) through the medium-pressure steam drum (3) and a medium-pressure side descending pipe (16); the low-pressure convection heating surface (10) is arranged in the middle of the two-stage economizer (9).
3. The dual pressure waste heat boiler of claim 2, characterized in that: the natural circulation radiation heating surface (1) is provided with a left smoke chamber and a right smoke chamber, the lower side of the left smoke chamber is provided with a smoke inlet (14), the lower side of the right smoke chamber is provided with a smoke outlet (15), and the left smoke chamber and the right smoke chamber are communicated through a smoke communicating opening at the upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142819.2U CN211822328U (en) | 2020-01-21 | 2020-01-21 | Double-pressure waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142819.2U CN211822328U (en) | 2020-01-21 | 2020-01-21 | Double-pressure waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211822328U true CN211822328U (en) | 2020-10-30 |
Family
ID=72993412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020142819.2U Expired - Fee Related CN211822328U (en) | 2020-01-21 | 2020-01-21 | Double-pressure waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211822328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151778A (en) * | 2021-12-03 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Boiler structure without stopping boiler in overhaul and boiler-stopping switching method |
-
2020
- 2020-01-21 CN CN202020142819.2U patent/CN211822328U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151778A (en) * | 2021-12-03 | 2022-03-08 | 无锡华光环保能源集团股份有限公司 | Boiler structure without stopping boiler in overhaul and boiler-stopping switching method |
| CN114151778B (en) * | 2021-12-03 | 2024-03-01 | 无锡华光环保能源集团股份有限公司 | Boiler structure without stopping furnace during overhaul and furnace stopping switching method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203771380U (en) | Condensation waste heat recovery steam boiler | |
| CN203068991U (en) | Combined waste heat utilization heat pipe waste heat boiler | |
| CN211822328U (en) | Double-pressure waste heat boiler | |
| CN109708096A (en) | A kind of intersection mixed flow superheater | |
| CN100520268C (en) | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant | |
| CN202392765U (en) | Self-supporting type waste heat boiler | |
| CN203203010U (en) | Boiler for yellow phosphorus tail gas combustion | |
| CN204880066U (en) | Large -scale module high -efficient condensing gas steam boiler that gets ready | |
| CN108645226B (en) | Electric stove flue gas double working medium heat exchange composite cycle superheated steam system | |
| CN110822402A (en) | Horizontal gas corner tube boiler | |
| CN207796992U (en) | Vertical energy-saving steam boiler | |
| CN202403247U (en) | Corner-tube waste heat boiler | |
| CN205424884U (en) | Residual heat from flue gas of firepower factory device | |
| CN201611090U (en) | Waste-heat boiler superheater | |
| CN216203253U (en) | Large-scale module assembled three-drum steam boiler | |
| CN106595041A (en) | Denitration-free biomass/ natural gas double-fuel boiler | |
| CN207487144U (en) | Spraying condensation type gas fired-boiler | |
| CN201867104U (en) | Horizontal integral heat-tube heat exchanger | |
| CN202188627U (en) | Safe and energy-saving angle pipe hot-water boiler | |
| CN105352174A (en) | Large gas-fired hot water boiler | |
| CN110630995A (en) | Positive pressure horizontal water pipe waste heat boiler | |
| CN201706527U (en) | Combination air preheater | |
| CN213746679U (en) | Novel high-efficient malleation coal gas exhaust-heat boiler | |
| CN217653835U (en) | Coke oven flue gas waste heat boiler | |
| CN209622754U (en) | Superhigh temperature ultrahigh pressure coal gas boiler horizontal flue convection current vapo(u)rization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 |