CN208365564U - A kind of boiler smoke energy conservation disappears white device - Google Patents

A kind of boiler smoke energy conservation disappears white device Download PDF

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Publication number
CN208365564U
CN208365564U CN201820472363.9U CN201820472363U CN208365564U CN 208365564 U CN208365564 U CN 208365564U CN 201820472363 U CN201820472363 U CN 201820472363U CN 208365564 U CN208365564 U CN 208365564U
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China
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air
boiler
heating agent
energy conservation
heat exchanger
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CN201820472363.9U
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郭启刚
李爱云
郭泰�
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Beijing Xing Sheng Technology Co Ltd
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Beijing Xing Sheng Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

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  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

A kind of boiler smoke energy conservation disappears white device, it includes boiler and air preheater, deduster, air-introduced machine, desulfuration absorbing tower, chimney by flue and boiler sequential connection, the air preheater is connected with the air inlet and pressure fan of the boiler by air supply duct, the entrance of the pressure fan or outlet are equipped with air-supply heater, the air-supply heater is equipped with heating agent water inlet and heating agent water out, is successively connect with the smoke gas afterheat heat exchanger and heating agent water-cooling apparatus between the heating agent water inlet and the heating agent water out by heating agent waterpipe.A kind of boiler smoke energy conservation provided by the utility model disappears white device, not only can abundant Mist heat recovering, but also there is apparent heat pump effect, the grade and utilization efficiency for recycling thermal energy can be promoted.

Description

A kind of boiler smoke energy conservation disappears white device
Technical field
The utility model relates to energy conservation and environmental protection, in particular to a kind of boiler smoke energy conservation disappears white device.
Background technique
In existing boiler flue gas treatment system, flue gas caused by boiler usually successively passes through air preheater, removes Chimney, which is discharged into, after dirt device, air-introduced machine, desulfuration absorbing tower enters atmosphere;It can recovery section in the air preheater blown to boiler Fume afterheat, but the problems such as be limited by the low-temperature corrosion of air preheater, the flue gas being discharged from air preheater outlet is still warm Degree is higher, therefore the flue-gas temperature for entering desulfurizing tower is still higher, and the desulfurization slurry in absorption tower will absorb a large amount of latent heats of vaporization, Partial moisture will be evaporated and be discharged into atmosphere with flue gas, additionally due to the flue-gas temperature for being discharged into atmosphere is higher, also just cause vapor The sensible heat that a large amount of latent heats of vaporization and flue gas carried carry is discharged into atmosphere, causes energy loss, and carry large quantity of moisture, causes Water loss and environmental pollution form serious chimney and emit white cigarette phenomenon.
Utility model content
Disappear white receiving apparatus the technical problem to be solved by the present invention is to provide a kind of boiler energy-saving, reaches recycling cigarette The purpose of gas waste heat and abatement chimney white cigarette.
In order to solve the above technical problems, disappearing white device the utility model proposes a kind of boiler smoke energy conservation comprising pot Furnace and air preheater, the deduster, air-introduced machine, desulfuration absorbing tower, chimney being linked in sequence by flue and the boiler, institute State air inlet and pressure fan that air preheater is connected separately with the boiler by air supply duct, the entrance of the pressure fan or Outlet be equipped with air-supply heater, the air-supply heater be equipped with heating agent water inlet and heating agent water out, the heating agent water inlet and Smoke gas afterheat heat exchanger and heating agent water-cooling apparatus are connected in turn by heating agent waterpipe between the heating agent water out, it is described Heating agent waterpipe is equipped with heat medium water power drive unit.
Preferably, the desulfuration absorbing tower is equipped with serum recycle pipe, and the smoke gas afterheat heat exchanger is arranged in the slurries On circulation pipe;
Preferably, the smoke gas afterheat heat exchanger is arranged on the entrance of the desulfuration absorbing tower or the flue of outlet;
Preferentially, the smoke gas afterheat heat exchanger is direct contact heat exchanger.
Preferably, the smoke gas afterheat heat exchanger is arranged in desulfurizing tower.
Preferably, the smoke gas afterheat heat exchanger is shower towers, and the shower towers are arranged on the desulfuration absorbing tower top Or on the flue of the desulfuration absorbing tower outlet or in the chimney.
Preferably, the heating agent water-cooling apparatus is that mechanical draft tower or shower towers or air cooling tower or heat pump or outside are cold Source;
Preferably, the heating agent water-cooling apparatus is parallel with heat medium water bypass and control valve.
Preferably, the air-supply heater is parallel with the bypass of the first heat medium water and control valve;
Preferably, the first smoke gas afterheat heat exchanger is provided between the air preheater and the deduster on flue.
Preferably, the air preheater has been arranged in parallel the second smoke gas afterheat heat exchanger.
Preferably, the air-introduced machine entrance or outlet are provided with third smoke gas afterheat heat exchanger.
It should be noted that pressure fan as described herein is to refer to directly to blow or blow indirectly various to boiler furnace Blower, pressure fan, primary air fan including power industry meaning.
Boiler smoke energy conservation provided by the utility model disappears white device, not only can abundant Mist heat recovering, but also With apparent heat pump effect, the grade and utilization efficiency of recycling thermal energy can be promoted, while flue-gas temperature can also be passed through It reduces, improves efficiency of dust collection, the desulfurizing tower desulfuration efficiency of electrostatic precipitator, reduce smoke evacuation moisture and pollutant carries, reduce cigarette Chimney emits white cigarette phenomenon, reduces water consume, recovery section water, while playing the role of energy-saving and environmental protection.
Detailed description of the invention
Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model It encloses.Wherein,
Fig. 1 be disappeared according to a kind of boiler smoke energy conservation of the specific embodiment of the utility model white device structure it is former Manage schematic diagram;
Fig. 2 improves the principle schematic diagram of embodiment for one on the basis of Fig. 1;
Another on the basis of Fig. 3 is Fig. 1 improves the principle schematic diagram of embodiment;
Fig. 4 improves the principle schematic diagram of embodiment for one on the basis of Fig. 3;
Another on the basis of Fig. 5 is Fig. 3 improves the principle schematic diagram of embodiment;
Fig. 6 improves the principle schematic diagram of embodiment for one on the basis of Fig. 5.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention Specific embodiment of the present utility model.Wherein, identical component uses identical label.
Fig. 1 be disappeared according to a kind of boiler smoke energy conservation of the specific embodiment of the utility model white device structure it is former Manage schematic diagram.Shown in Figure 1, the utility model provides a kind of boiler smoke energy conservation and disappears white device comprising boiler 1 and Air preheater 2, the deduster 3, air-introduced machine 4, desulfuration absorbing tower 5, chimney 7 being linked in sequence by flue and the boiler 1, institute State air inlet 101 and pressure fan 6 that air preheater 2 is connected separately with the boiler 1 by air supply duct, the pressure fan 6 Entrance or outlet be equipped with air-supply heater 8, the air-supply heater 8 is equipped with heating agent water inlet 81 and heating agent water out 82, institute State between heating agent water inlet 81 and the heating agent water out 82 by heating agent waterpipe be connected in turn smoke gas afterheat heat exchanger 9 and Heating agent water-cooling apparatus 10, the heating agent waterpipe are equipped with heat medium water power drive unit 11.
The heat medium water power drive unit 11 can be a circulating pump, and heat medium water is filled in the heat medium water power drive It sets and is circulated under 11 drivings.Flue gas into the desulfuration absorbing tower 5 is sprayed by the spray system of the desulfuration absorbing tower 5 The desulfurization slurry of leaching carries out mixed heat transfer, and the slurry of the desulfuration absorbing tower bottom is fallen into after the waste heat in desulfurization slurry absorption flue gas Liquid pool;The desulfuration absorbing tower 5 is equipped with serum recycle pipe 51, and the smoke gas afterheat heat exchanger 9 may be provided at the serum recycle On pipe 51, desulfurization slurry is recycled in the serum recycle pipe 51 and changes the heat absorbed by the fume afterheat Hot device 9 passes to heat medium water, and passes to the air-supply heater 8 via heat medium water, and the air-supply heater 8 is by heat transfer To the air for being conveyed to the air preheater 2, it that is to say the auxiliary air of the boiler 1, draw to realize to from described The UTILIZATION OF VESIDUAL HEAT IN of 4 exiting flue gas of blower.Since after the air preheater 2, low-grade fume afterheat is promoted to Gao Pin The thermal energy of position, can be improved the recycling efficiency of fume afterheat, have heat pump effect.It exchanges heat by the air-supply heater 8 Heat medium water after cooling flows through after the heating agent water-cooling apparatus 10 further cools and is recycled to the flue gas waste heat for heat exchange Device 9.The desulfuration absorbing tower 5 can be sprayed into from spray equipment to heat medium water heat release desulfurization slurry after cooling, reduced described Desulphurization system 5 export flue-gas temperature and humidity, can play reinforcing desulfuration dedusting, reduce desulfurizing tower exiting flue gas water capacity and Chimney white cigarette reduces the effects of desulfurization moisturizing and discharge of wastewater.The purpose that the heating agent water-cooling apparatus 10 is arranged is Ke Yiti The heat transfer temperature difference of the high smoke gas afterheat heat exchanger 9, strengthens the cooling effect to desulfurization slurry or even flue gas, further decreases cigarette Gas temperature and humidity improves chimney and disappears white effect, this blow described in environment temperature higher season 8 cooling capacity of heater compared with It is particularly important when poor.The desulfurization slurry circulation pipe 51 can be one or more, and the smoke gas afterheat heat exchanger 9 can be set On a serum recycle pipe 51, also it can be set on the more serum recycle pipes 51.
Certainly, the smoke gas afterheat heat exchanger 9 also can be set in the inside of the desulfuration absorbing tower 5, in slurry pool, The heat of the desulfurization slurry in the desulfuration absorbing tower 5 in slurry pool is absorbed by the smoke gas afterheat heat exchanger 9, reduces slurries Temperature, and by slurries spray and flue gas mixed heat transfer, reduce flue-gas temperature and humidity that the desulfuration absorbing tower 5 exports.
The heating agent water-cooling apparatus 10 can be mechanical draft tower, be also possible to shower towers or air cooling tower or heat pump, It can be external cold source, Ru Jiang, sea, lake, reservoir etc., as long as can cool down to heat medium water.
Fig. 2 improves the principle schematic diagram of embodiment for one on the basis of Fig. 1.It is shown in Figure 2, preferably at one In embodiment, the heating agent water-cooling apparatus 10 is parallel with heat medium water bypass and control valve group 12.The control valve group 12 It may include multiple valves, for example, can be as shown in Fig. 2, in upper two with the heating agent water-cooling apparatus 10 of heat medium water bypass It is respectively set on lateral line.It acts as: when the temperature of the surroundings is low, the cooling capacity of the air-supply heater 8 is stronger, at this moment It can be bypassed by the heat medium water and the control valve group 12 is decreased or turned off through the heating agent water-cooling apparatus 10 Heating agent water flow.
Another on the basis of Fig. 3 is Fig. 1 improves the principle schematic diagram of embodiment.It is shown in Figure 3, it is excellent at one It selects in embodiment, the smoke gas afterheat heat exchanger 9 is arranged in the flue that the desulfurizing tower 5 exports, and passes through the fume afterheat Heat exchanger 9 directly absorbs the waste heat of flue gas, and reduces flue-gas temperature and humidity.Certainly, the smoke gas afterheat heat exchanger can also be with It is arranged in the flue of 5 entrance of desulfuration absorbing tower.The smoke gas afterheat heat exchanger 9 can be dividing wall type heat exchanger, i.e. cigarette Gas is not directly contacted with heat medium water, but is conducted by the wall surface of heat exchanger;The smoke gas afterheat heat exchanger 9 can also be hybrid Heat exchanger, i.e. flue gas and the direct mixed heat transfer of heat medium water, heat medium water directly absorb the heat of flue gas.
Fig. 4 improves the principle schematic diagram of embodiment for one on the basis of Fig. 3.It is shown in Figure 4, preferably at one In embodiment, the air-supply heater 8 is parallel with the bypass of the first heat medium water and the first control valve group 13.First control valve Door group 13 may include multiple valves, for example, can be as shown in figure 4, bypassing the upper and air-supply heater 8 in the first heat medium water Two lateral lines on be respectively set.It acts as: when environment temperature is higher, the cooling capacity of the air-supply heater 8 is weaker, At this moment it can bypass to adjust or close with the first control valve group 13 by first heat medium water and be added by the air-supply The heating agent water flow of hot device 8 reduces the energy consumption of the heat medium water driving device 11.
Certainly, the air-supply heater 8 in embodiment illustrated in fig. 4 is parallel with the bypass of the first heat medium water and the first control valve The structure type of door group 13 can also be in the system of the pressure fan heater 8 in Fig. 1 and other embodiments shown in the drawings It is used in structure.The heating agent water-cooling apparatus 10 in embodiment illustrated in fig. 2 is parallel with heat medium water bypass and control valve group 12 structure type can also be in the system structure of the heating agent water-cooling apparatus 10 in Fig. 3 or other the embodiment shown in that figure Middle use.
Another on the basis of Fig. 5 is Fig. 3 improves the principle schematic diagram of embodiment.It is shown in Figure 5, it is excellent at one It selects in embodiment, the smoke gas afterheat heat exchanger 9 is shower towers, and the setting of shower towers 9 exports cigarette in the desulfuration absorbing tower 5 On road.From the heating agent water out 82 of the air-supply heater 8 or the low temperature heating agent of the heating agent water-cooling apparatus 10 Water carries out mixed heat transfer by spraying into the shower towers 9, with the flue gas for entering the shower towers 9, and flue-gas temperature reduces, humidity It reduces;Heat medium water is heated simultaneously, and temperature improves, and the hydrogenesis precipitation in the flue gas of other part falls into institute together with heat medium water 9 bottom of shower towers is stated, enters heat medium water pipeline after recovered and is sent into the air-supply heater 8, air-supply is heated.It needs to illustrate It is that under such scheme, as time goes by, flue gas condensing water can gradually increase, this part water can be used for other users, this Place does not repeat.
Fig. 6 improves the principle schematic diagram of embodiment for one on the basis of Fig. 5.It is shown in Figure 6, preferably at one In embodiment, the smoke gas afterheat heat exchanger 9' is the shower towers for being located at the top of the desulfuration absorbing tower 5.That is, can The top tower body of the desulfuration absorbing tower 5 is extended into a part as the tower body of shower towers, may make overall structure so more It is compact.In this case, this Shen can be used in the structure of the fluid collection device 901 below the smoke gas afterheat heat exchanger 9' Inventor please is concentrated by evaporation employed in processing unit in a kind of flue gas desulfurization waste-water of Chinese patent ZL2017205747458 The structure of fluid collection device.Details are not described herein.
In a preferred embodiment, the smoke gas afterheat heat exchanger 9' can also be located in the chimney 7, that is to say by Tower body of a part of the chimney 7 as shower towers.
In a preferred embodiment, the first fume afterheat is provided between the air preheater 2 and the deduster 3 Heat exchanger 31.The waste heat of the exiting flue gas of the air preheater 2 can be recycled in this way.Boiler air-supply heater 8 will be from 4 exiting flue gas of air-introduced machine extracts the tow taste heat come and is sent into the boiler 1 by described 2 a part of air preheater Burner hearth can play the role of directly saving fuel, and utilization efficiency is very high;The outlet that another part passes through the air preheater 2 The raising of flue-gas temperature is converted to high-grade heat, and first smoke gas afterheat heat exchanger 31 can be by this part high-grade warm Amount passes to other heat users, such as heats or heat the condensed water of steam turbine.To realize fume afterheat tow taste heat to The conversion of high-grade heat and the step of fume afterheat recycle, and the utilization efficiency of fume afterheat can be improved, and have relatively strong Heat pump efficiency.Meanwhile the entrance flue gas temperature of the deduster 3 is reduced by first smoke gas afterheat heat exchanger 31, So that the specific resistance of flue gas reduces, volume flow reduces, the efficiency of the deduster 3 can be improved, can also contribute to simultaneously Remove partial vulcanization ingredient.
Certainly, third smoke gas afterheat heat exchanger (not shown) has can be set in 4 entrance of air-introduced machine or outlet, this Kind mode benefit is that flue gas abrasion of heat exchanging device after dedusting is greatly decreased.
In a preferred embodiment, the air preheater 2 has been arranged in parallel the second smoke gas afterheat heat exchanger 21.Also It is the smoke inlet and the outlet smoke inlet cigarette with the air preheater 2 respectively for saying second smoke gas afterheat heat exchanger 21 Road is connected with exhaust pass, that is, is provided with the bypass flue of the air preheater 2, and in the bypass flue described in setting Second smoke gas afterheat heat exchanger.Due to that the 2 entrance wind-warm syndrome of air preheater can be made to mention by boiler air-supply heater 8 Height, therefore the entrance high-temperature flue gas demand for entering the air preheater 2 is reduced, and the bypass flue and described second is arranged Smoke gas afterheat heat exchanger 21 can make full use of high-grade heat, such as can give this part high-grade heat transfer to other heat User, so that transformation efficiency and cascade utilization efficiency of the boiler smoke tow taste heat to high-grade heat are further promoted, heat Pumping action is prominent.
When the air-supply heater 8 is arranged in 6 entrance of pressure fan, the air-supply heater 8 may be configured as to divide From setting (such as can use and the forms such as lift or be detachably connected or overturn).That is the air-supply heater 8 with The entrance of the pressure fan 6 can separate, and such purpose is: described in the normal use when air-supply heater 8, can make described Air-supply heater 8 is tightly engaged into 6 entrance of pressure fan.When summer environment temperature is higher, the air-supply heater 8 is to sending When wind heating efficiency is poor, the air-supply heater 8 can be separated, so that the air-supply heater 8 and 6 entrance of pressure fan At a distance, to reduce the entry resistance of the pressure fan 6.A kind of boiler smoke energy conservation provided by the utility model disappears White device, not only can abundant Mist heat recovering, but also have apparent heat pump effect, can be promoted recycle thermal energy grade And utilization efficiency, while the efficiency of dust collection of electrostatic precipitator, desulfurizing tower desulfurization effect by the reduction of flue-gas temperature, can also be improved Rate, reduces smoke evacuation moisture and pollutant carries, and reduces chimney and emits white cigarette phenomenon, reduces water consume, recovery section water, while playing section Energy, environmentally friendly effect.
It will be appreciated by those skilled in the art that although the utility model is described in the way of multiple embodiments , but not each embodiment only contains an independent technical solution.So narration is in specification just for the sake of clear For the sake of, the skilled in the art should refer to the specification as a whole is understood, and by skill involved in each embodiment Art scheme, which is regarded as, can be combined with each other into the modes of different embodiments to understand the protection scope of the utility model.
The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model It encloses.Any those skilled in the art, under the premise of not departing from the conceptions and principles of the utility model made equivalent variations, Modification and combination, should belong to the range of the utility model protection.

Claims (12)

  1. The white device 1. a kind of boiler smoke energy conservation disappears, which is characterized in that it include boiler and by flue and the boiler it is suitable Air preheater, the deduster, air-introduced machine, desulfuration absorbing tower, chimney of sequence connection, the air preheater are connected by air supply duct It is connected to the air inlet and pressure fan of the boiler, the entrance of the pressure fan or outlet are equipped with air-supply heater, and the air-supply adds Hot device is equipped with heating agent water inlet and heating agent water out, passes through heating agent water pipe between the heating agent water inlet and the heating agent water out Road is connected with smoke gas afterheat heat exchanger and heating agent water-cooling apparatus in turn.
  2. The white device 2. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the desulfuration absorbing tower is equipped with slurry Liquid circulation pipe, the smoke gas afterheat heat exchanger are arranged on the serum recycle pipe.
  3. The white device 3. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the smoke gas afterheat heat exchanger is set It sets on the entrance of the desulfuration absorbing tower or the flue of outlet.
  4. The white device 4. boiler smoke energy conservation according to claim 3 disappears, which is characterized in that the smoke gas afterheat heat exchanger is Direct contact heat exchanger.
  5. The white device 5. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the smoke gas afterheat heat exchanger is set It sets in desulfurizing tower.
  6. The white device 6. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the smoke gas afterheat heat exchanger is Shower towers, the shower towers are arranged on the desulfuration absorbing tower top or the desulfuration absorbing tower exhaust pass or the chimney In.
  7. The white device 7. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the heating agent water-cooling apparatus is Mechanical draft tower or shower towers or air cooling tower or heat pump or external cold source.
  8. The white device 8. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the heating agent water-cooling apparatus is simultaneously It is associated with heat medium water bypass and control valve.
  9. The white device 9. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the air-supply heater is parallel with The bypass of first heat medium water and control valve.
  10. The white device 10. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the air preheater and institute It states and is provided with the first smoke gas afterheat heat exchanger between deduster on flue.
  11. The white device 11. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the air preheater is in parallel It is provided with the second smoke gas afterheat heat exchanger.
  12. The white device 12. boiler smoke energy conservation according to claim 1 disappears, which is characterized in that the air-introduced machine entrance goes out Mouth is provided with third smoke gas afterheat heat exchanger.
CN201820472363.9U 2018-04-04 2018-04-04 A kind of boiler smoke energy conservation disappears white device Active CN208365564U (en)

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CN201820472363.9U CN208365564U (en) 2018-04-04 2018-04-04 A kind of boiler smoke energy conservation disappears white device

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CN208365564U true CN208365564U (en) 2019-01-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145756A (en) * 2019-05-31 2019-08-20 浙江特富锅炉有限公司 Smoke whitening system of heating boiler
CN111156536A (en) * 2019-12-28 2020-05-15 南京楚卿电子科技有限公司 Waste heat recovery economizer system of thermal power plant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145756A (en) * 2019-05-31 2019-08-20 浙江特富锅炉有限公司 Smoke whitening system of heating boiler
CN110145756B (en) * 2019-05-31 2023-12-22 浙江特富锅炉有限公司 Flue gas whitening system of heating boiler
CN111156536A (en) * 2019-12-28 2020-05-15 南京楚卿电子科技有限公司 Waste heat recovery economizer system of thermal power plant

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