CN210107458U - Air and flue gas mixed heating and accelerating device - Google Patents
Air and flue gas mixed heating and accelerating device Download PDFInfo
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- CN210107458U CN210107458U CN201920820438.2U CN201920820438U CN210107458U CN 210107458 U CN210107458 U CN 210107458U CN 201920820438 U CN201920820438 U CN 201920820438U CN 210107458 U CN210107458 U CN 210107458U
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- 239000003546 flue gas Substances 0.000 title claims abstract description 93
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000010438 heat treatment Methods 0.000 title claims abstract description 35
- 238000009833 condensation Methods 0.000 claims abstract description 51
- 230000005494 condensation Effects 0.000 claims abstract description 51
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 239000000779 smoke Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 230000008030 elimination Effects 0.000 claims description 16
- 238000003379 elimination reaction Methods 0.000 claims description 16
- 239000002826 coolant Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000002087 whitening effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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- Air Supply (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model provides an air flue gas hybrid heating accelerating device belongs to boiler technical field. It has solved the not good problem of flue gas whitening effect of current boiler. This air flue gas hybrid heating accelerating device sets up on heating boiler, heating boiler includes boiler body, condensation heat transfer device and chimney, condensation heat transfer device links to each other with boiler body, its characterized in that, mix accelerating device including mixing the accelerator and preheating the air pipe way, mix the accelerator setting between condensation heat transfer device and chimney, preheating the air pipe and being provided with air heater on the road. The temperature of the flue gas is increased, so that the effect of eliminating the white smoke is improved.
Description
Technical Field
The utility model belongs to the technical field of the flue gas is handled, a air flue gas hybrid heating accelerating device is related to.
Background
In the existing boiler flue gas treatment system, flue gas generated by a boiler is usually discharged into a chimney and enters the atmosphere after passing through an air preheater, a dust remover, a draught fan and a desulfurization absorption tower in sequence; can retrieve partial flue gas waste heat in the air heater who gives the boiler air supply, nevertheless receive the low temperature corrosion scheduling problem of air heater, the flue gas that is discharged from the air heater export is still high in temperature, consequently, the flue gas temperature that gets into the desulfurizing tower is still high, the desulfurization thick liquid in the absorption tower will absorb a large amount of latent heats of vaporization, partial moisture will be evaporated and is discharged into the atmosphere along with the flue gas, in addition because the flue gas temperature that discharges into atmospheric is higher, just also cause a large amount of latent heats of vaporization that vapor carried and the sensible heat that the flue gas carried to be discharged into the atmosphere, cause energy loss, and carry a large amount of moisture, cause water loss and environmental pollution, form serious chimney and emit the white cigarette phenomenon. After retrieval, the method is shown in Chinese patent documents [ grant publication number: authorization notice number: CN208365564U discloses a boiler flue gas is energy-conserving to disappear white device, its characterized in that, its include the boiler and through the flue with air heater, dust remover, draught fan, desulfurization absorption tower, chimney that the boiler connects gradually, air heater has through the supply-air duct connection the air intake and the forced draught blower of boiler, the entry or the export of forced draught blower are equipped with air supply heater, air supply heater is equipped with hot media water inlet and hot media water outlet, hot media water inlet with have connected gradually flue gas waste heat exchanger and hot media water cooling device through hot media water pipeline between the hot media water outlet. Although the effect of heat recovery and white smoke elimination can be achieved, the chimney is often inconvenient to discharge due to the fact that the temperature of the condensed flue gas is too low, and the discharge efficiency and the discharge effect are affected.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided an air flue gas hybrid heating accelerating device, the technical problem that it will solve is the flue gas that how to improve the boiler disappears white effect.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides an air flue gas hybrid heating accelerating device, sets up on heating boiler, heating boiler includes boiler body, condensation heat transfer device and chimney, condensation heat transfer device links to each other with boiler body, its characterized in that, mix accelerating device including mixing the accelerator and preheating the air pipeline, mix the accelerator setting between condensation heat transfer device and chimney, preheating the air pipeline and being provided with air heater on the air pipeline.
In the above air-flue gas mixing and heating speed-increasing device, the mixing speed-increasing device includes a flue gas inlet, a flue gas mixing outlet and a preheated air inlet, the flue gas inlet is connected with the condensation heat exchange device, the flue gas mixing outlet is connected with the chimney, and the preheated air inlet is located on a pipeline between the flue gas inlet and the flue gas mixing outlet.
In the air and flue gas mixed heating speed-increasing device, the preheated air inlet is provided with the obliquely arranged air baffle.
At foretell air flue gas hybrid heating accelerating device, condensation heat transfer device includes condenser and condensation white heater that disappears, air heater, condenser and condensation white heater that disappears are the heat exchanger, and have the continuous closed refrigerant water circulation pipeline of circulation in proper order between air heater, condenser and the condensation white heater that disappears.
At foretell air flue gas hybrid heating accelerating device, be provided with the draught fan on preheating the air pipeline, the draught fan with set up the flue gas pressure sensor electricity signal connection between condensation white heater and mixed accelerator, mixed accelerator is connected with the draught fan. The flue gas pressure sensor is used for controlling the frequency of the draught fan, the variable-frequency draught fan adjusts the preheating air quantity entering the draught fan through the electric signal of the flue gas pressure sensor in a variable-frequency mode, and therefore the mixed flow rate of flue gas is adjusted through preheating air, and the purpose of balancing the total flue gas emission pressure is achieved and controlled.
In the air and flue gas mixed heating speed-increasing device, a cooling medium water circulating pipeline between the condensation white-removing heater and the air heater is connected with a cooling medium water injection pipeline, and a cooling medium water circulating pipeline between the air heater and the condensation white-removing heater is connected with a variable-frequency circulating pump controlled by variable frequency.
In the air and flue gas mixing and heating speed-increasing device, an air circulation loop is arranged between the preheated air pipeline and the boiler body, a flow regulating valve and an air blower are arranged on the air circulation loop, a smoke extractor is arranged between the condenser and the condensation and disinfection heater, the smoke extractor is connected to the air circulation loop through a mixing device, and the mixing device is positioned between the flow regulating valve and the air blower.
In the air and flue gas mixing heating speed-increasing device, the preheating air pipeline is connected with the external atmosphere.
Compared with the prior art, the utility model discloses a condensation heat transfer device with a plurality of heat exchangers reduces boiler flue gas temperature to below the condensation point, separates out the moisture in the flue gas, then heats the flue gas through the heat that the condensation releases, makes it flue gas temperature rise, if the flue gas temperature is not enough at this moment, through the flue gas heating accelerating device of flue preparation, properly add some preheated air volume through the draught fan, further promote flue gas temperature to do benefit to flue gas chimney emission; meanwhile, the frequency of the induced draft fan is controlled through the pressure sensor, the pressure balance of the tail of the flue is guaranteed, and the combustion safety is guaranteed. The flue gas heats the cooled circulating medium water, the temperature required by the condensed flue gas is further reduced through cold air, and the cooled circulating medium water is injected into a flue gas condenser through a variable-frequency circulating pump to achieve a closed circulating process. The control principle controls the flow of the medium water through the variable frequency control of the variable frequency circulating pump, and the temperature required by the medium water is controlled.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Fig. 2 is a schematic structural diagram of the hybrid accelerator of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of the heat exchanger of the present invention.
Fig. 4 is a side view of the heat exchanger of the present invention.
In the figure, 1, a boiler body; 2. a chimney; 3. a hybrid accelerator; 301. a flue gas stream inlet; 302. a flue gas mixed flow outlet; 303. a preheated air inlet; 304. an air baffle; 4. preheating an air pipeline; 5. a condenser; 6. a condensation white elimination heater; 7. an air heater; 8. an induced draft fan; 9. a pressure sensor; 10. a condensed water injection pipeline; 11. a variable frequency circulating pump; 12. an air circulation loop; 13. a flow regulating valve; 14. a blower; 15. a cigarette taking device; 16. a mixing device; 17. a natural gas supply line; 18. a condensing heat exchanger; 19. flue gas pressure sensor.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Referring to fig. 1, an air flue gas hybrid heating accelerating device, the heating boiler includes boiler body 1, condensation heat transfer device and chimney 2, boiler body 1 is connected with natural gas supply pipeline 17, condensation heat transfer device links to each other with boiler body 1, and be provided with a condensation heat exchanger 18 between condensation heat transfer device and the boiler body 1, set up between condensation heat exchanger 18 and the boiler body 1 with water pipeline for heating, hybrid accelerating device is including mixing accelerator 3 and preheating air pipeline 4, preheating air pipeline 4 is connected with external atmosphere, hybrid accelerator 3 sets up between condensation heat transfer device and chimney 2, be provided with air heater 7 on the preheating air pipeline 4.
The condensation heat exchange device comprises a condenser 5 and a condensation white elimination heater 6, a draught fan 8 is arranged on the preheated air pipeline 4, the draught fan 8 is in electric signal connection with a flue gas pressure sensor 19 arranged between the condensation white elimination heater 6 and the mixing accelerator 3, a frequency conversion circulating pump 11 used for controlling frequency is arranged on the cooling medium water circulating pipeline, the frequency conversion circulating pump 11 is arranged between the air heater 7 and the condensation white elimination heater 6, the frequency conversion circulating pump 11 is in electric signal connection with a temperature sensor 9 arranged on a flue gas pipeline between the condenser 5 and the condensation white elimination heater 6, the frequency conversion circulating pump 11 is connected with the temperature sensor 9, and the temperature sensor 9 is used for adjusting the flow of the frequency conversion circulating pump 11 to reach a flue gas temperature set point through frequency conversion. A cooling medium water injection pipeline 10 is connected on a condensed water circulating pipeline between the condensation white elimination heater 6 and the air heater 7, an air circulating loop 12 is arranged between the preheated air pipeline 4 and the boiler body 1, a flow regulating valve 13 and an air blower 14 are arranged on the air circulating loop 12, a smoke extractor 15 is arranged between the condenser 5 and the condensation white elimination heater 6, the smoke extractor 15 is connected on the air circulating loop 12 through a mixing device 16, and the mixing device 16 is positioned between the flow regulating valve 13 and the air blower 14.
With reference to fig. 2, the mixing accelerator 3 includes a flue gas inlet 301, a flue gas mixed flow outlet 302 and a preheated air inlet 303, the flue gas inlet 301 is connected to the condensation heat exchanger, the flue gas mixed flow outlet 302 is connected to the chimney 2, the preheated air inlet 303 is located on a pipeline between the flue gas inlet 301 and the flue gas mixed flow outlet 302, and the preheated air inlet 303 is provided with an air baffle 304 which is obliquely arranged.
The air heater 7, the condenser 5 and the condensation and white elimination heater 6 are all heat exchangers, and a condensation medium water circulation pipeline which is connected in sequence in a circulation manner is arranged among the air heater 7, the condenser 5 and the condensation and white elimination heater 6, wherein the air heater 7 is used for heating air at normal temperature lower than 0 ℃, medium water in the pipeline flows in from a high position and flows out from a low position, as shown in fig. 4; the condenser 5 is used for cooling the flue gas, medium water in the pipe enters from a lower part and flows out from a higher part, as shown in fig. 3; the preheating and white elimination device 7 is used for increasing the temperature of the flue gas, and medium water in the pipe enters from a high position and flows out from a low position, as shown in figure 4.
The embodiment adopts a condensation-heating-de-whitening-precooling-mixed flue gas de-whitening system, is suitable for a northern heating system, namely an outdoor environment with the air temperature lower than the condensation point, and can effectively perform flue gas de-whitening; in the embodiment, a plurality of groups of condensing heat exchangers are arranged, so that the temperature of the flue gas of the boiler is reduced to be below a condensation point, moisture in the flue gas is separated out, then the flue gas is heated by heat released by condensation, so that the temperature of the flue gas is increased, at the moment, if the temperature of the flue gas is insufficient, a flue gas speed-increasing device is manufactured in a flue, a part of preheated air is properly added through an induced draft fan 8, and the temperature of the flue gas is further increased, so that the emission of a flue gas chimney; meanwhile, the frequency of the induced draft fan is controlled through the pressure sensor, the pressure balance of the tail of the flue is guaranteed, and the combustion safety is guaranteed. The flue gas heats the cooled medium water, further cools through the cold air, obtains the temperature that the condensation flue gas needs, through frequency conversion circulating pump 11, pours into the flue gas condenser into, reaches a circulation process. The control principle controls the flow of the medium water through the variable frequency control of the variable frequency circulating pump to achieve the temperature required by the control of the medium water; in addition, antifreezing solution or alcohol can be added into the medium water to prevent the medium water temperature from being lower than the freezing point temperature when the smoke condensation needs lower temperature.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides an air flue gas hybrid heating accelerating device, sets up on heating boiler, heating boiler includes boiler body (1), condensation heat transfer device and chimney (2), condensation heat transfer device links to each other with boiler body (1), its characterized in that, hybrid heating accelerating device is including mixing accelerator (3) and preheating air pipe way (4), mixing accelerator (3) set up between condensation heat transfer device and chimney (2), be provided with air heater (7) on preheating air pipe way (4).
2. The air-flue gas mixing and heating speed increasing device according to claim 1, wherein the mixing speed increasing device (3) comprises a flue gas flow inlet (301), a flue gas mixing flow outlet (302) and a preheated air inlet (303), the flue gas flow inlet (301) is connected with a condensation heat exchange device, the flue gas mixing flow outlet (302) is connected with a chimney (2), and the preheated air inlet (303) is positioned on a pipeline between the flue gas flow inlet (301) and the flue gas mixing flow outlet (302).
3. The air-flue gas mixing and heating speed increasing device according to claim 2, wherein the preheated air inlet (303) is provided with an obliquely arranged air baffle (304).
4. The air and flue gas mixing, heating and speed increasing device according to claim 1, wherein the condensation heat exchange device comprises a condenser (5) and a condensation white elimination heater (6), the air heater (7), the condenser (5) and the condensation white elimination heater (6) are all heat exchangers, and a closed cooling medium water circulation pipeline which is connected in a circulating mode sequentially is arranged among the air heater (7), the condenser (5) and the condensation white elimination heater (6).
5. The air-flue gas mixing heating speed increasing device according to claim 4, wherein an induced draft fan (8) is arranged on the preheated air pipeline (4), the induced draft fan (8) is electrically connected with a flue gas pressure sensor (19) arranged between the condensation white elimination heater (6) and the mixing speed increaser (3), and the mixing speed increaser (3) is connected with the induced draft fan (8).
6. The air and flue gas mixing, heating and speed increasing device according to claim 5, wherein a coolant water injection pipeline (10) is connected to a coolant water circulation pipeline between the condensing and air-removing heater (6) and the air heater (7), and a variable frequency circulating pump (11) with variable frequency control is connected to the coolant water circulation pipeline between the air heater (7) and the condensing and air-removing heater (6).
7. The air-flue gas mixing and heating speed-increasing device according to claim 6, wherein an air circulation loop (12) is arranged between the preheated air pipeline (4) and the boiler body (1), a flow regulating valve (13) and a blower (14) are arranged on the air circulation loop (12), an FGR smoke extractor (15) is arranged between the condenser (5) and the condensation and white elimination heater (6), the smoke extractor (15) is connected to the air circulation loop (12) through a mixing device (16), and the mixing device (16) is positioned between the flow regulating valve (13) and the blower (14).
8. Air-flue mixed heating and speed-increasing device according to any of claims 1 to 7, characterized in that the preheated air line (4) is connected to the outside atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920820438.2U CN210107458U (en) | 2019-05-31 | 2019-05-31 | Air and flue gas mixed heating and accelerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920820438.2U CN210107458U (en) | 2019-05-31 | 2019-05-31 | Air and flue gas mixed heating and accelerating device |
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| Publication Number | Publication Date |
|---|---|
| CN210107458U true CN210107458U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920820438.2U Expired - Fee Related CN210107458U (en) | 2019-05-31 | 2019-05-31 | Air and flue gas mixed heating and accelerating device |
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| Country | Link |
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| CN (1) | CN210107458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964093A (en) * | 2020-08-07 | 2020-11-20 | 北京英翔博瑞耐火材料科技有限公司 | Natural power air cooling and flue gas de-whitening device and flue gas de-whitening method |
-
2019
- 2019-05-31 CN CN201920820438.2U patent/CN210107458U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111964093A (en) * | 2020-08-07 | 2020-11-20 | 北京英翔博瑞耐火材料科技有限公司 | Natural power air cooling and flue gas de-whitening device and flue gas de-whitening method |
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| 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: 20200221 Termination date: 20210531 |