CN108679637A - A kind of energy saving white device that disappears of boiler smoke - Google Patents
A kind of energy saving white device that disappears of boiler smoke Download PDFInfo
- Publication number
- CN108679637A CN108679637A CN201810297081.4A CN201810297081A CN108679637A CN 108679637 A CN108679637 A CN 108679637A CN 201810297081 A CN201810297081 A CN 201810297081A CN 108679637 A CN108679637 A CN 108679637A
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- Prior art keywords
- flue gas
- boiler
- air
- heat exchanger
- waste heat
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- 239000000779 smoke Substances 0.000 title abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 111
- 239000003546 flue gas Substances 0.000 claims description 111
- 239000002918 waste heat Substances 0.000 claims description 55
- 230000023556 desulfurization Effects 0.000 claims description 41
- 238000010521 absorption reaction Methods 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 12
- 230000002087 whitening effect Effects 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 6
- 230000003009 desulfurizing effect Effects 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract 7
- 239000003595 mist Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention proposes a kind of energy saving white device that disappears of boiler smoke, it includes boiler and the air preheater that is linked in sequence by flue and the boiler, deduster, air-introduced machine, desulfuration absorbing tower, chimney, 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, it is connect successively with the smoke gas afterheat heat exchanger and heating agent water-cooling apparatus by heating agent waterpipe between the heating agent water inlet and the heating agent water out, the heating agent waterpipe is equipped with heat medium water power drive unit.A kind of energy saving white device that disappears of boiler smoke provided by the present invention, not only can abundant Mist heat recovering, but also have apparent heat pump effect, can be promoted recycle thermal energy grade and utilization ratio.
Description
Technical Field
The invention relates to the field of energy conservation and environmental protection, in particular to an energy-saving and white-removing device for boiler flue gas.
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.
Disclosure of Invention
The invention aims to provide an energy-saving white smoke eliminating device for a boiler, so that the aims of recovering waste heat of flue gas and reducing white smoke of a chimney are fulfilled.
In order to solve the technical problems, the invention provides a boiler flue gas energy-saving and white-eliminating device which comprises a boiler, an air preheater, a dust remover, an induced draft fan, a desulfurization absorption tower and a chimney, wherein the air preheater, the dust remover, the induced draft fan, the desulfurization absorption tower and the chimney are sequentially connected with the boiler through a flue, the air preheater is respectively connected with an air inlet and an air feeder of the boiler through an air feeding pipeline, an inlet or an outlet of the air feeder is provided with an air feeding heater, the air feeding heater is provided with a hot medium water inlet and a hot medium water outlet, a flue gas waste heat exchanger and a hot medium water cooling device are sequentially connected between the hot medium water inlet and the hot medium water outlet through a hot.
Preferably, the desulfurization absorption tower is provided with a slurry circulating pipe, and the flue gas waste heat exchanger is arranged on the slurry circulating pipe;
preferably, the flue gas waste heat exchanger is arranged on a flue at an inlet or an outlet of the desulfurization absorption tower;
preferably, the flue gas waste heat exchanger is a hybrid heat exchanger.
Preferably, the flue gas waste heat exchanger is arranged in the desulfurizing tower.
Preferably, the flue gas waste heat exchanger is a water spraying tower, and the water spraying tower is arranged on the upper part of the desulfurization absorption tower or on a flue at the outlet of the desulfurization absorption tower or in the chimney.
Preferably, the heat medium water cooling device is a mechanical draft tower, a water spray tower, an air cooling tower, a heat pump or an external cold source;
preferably, the hot water cooling device is connected with a hot water bypass and a control valve in parallel.
Preferably, the air supply heater is connected with a first hot water bypass and a control valve in parallel;
preferably, a first flue gas waste heat exchanger is arranged on a flue between the air preheater and the dust remover.
Preferably, the air preheater is provided with a second flue gas waste heat exchanger in parallel.
Preferably, a third flue gas waste heat exchanger is arranged at an inlet or an outlet of the induced draft fan.
It should be noted that the blower described herein refers to various blowers that directly or indirectly blow air to the furnace of the boiler, including blowers and primary blowers in the power industry.
The boiler flue gas energy-saving and white-eliminating device provided by the invention can fully recover flue gas waste heat, has an obvious heat pump effect, can improve the grade and utilization efficiency of recovered heat energy, and can improve the dust removal efficiency of an electrostatic dust collector and the desulfurization efficiency of a desulfurizing tower through reduction of the flue gas temperature, reduce the moisture content of discharged smoke and pollutant carrying, reduce the white smoke emission phenomenon of a chimney, reduce water consumption, recover part of water, and play a role in energy conservation and environmental protection.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1 is a schematic structural diagram of an energy-saving and white-eliminating device for boiler flue gas according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an improved embodiment based on FIG. 1;
FIG. 3 is a schematic structural diagram of another modified embodiment based on FIG. 1;
FIG. 4 is a schematic structural diagram of a modified embodiment based on FIG. 3;
FIG. 5 is a schematic structural diagram of another modified embodiment based on FIG. 3;
fig. 6 is a schematic structural diagram of a modified embodiment based on fig. 5.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
Fig. 1 is a schematic structural diagram of a boiler flue gas energy-saving and whitening device according to an embodiment of the invention. Referring to fig. 1, the invention provides a boiler flue gas energy-saving and white-eliminating device, which comprises a boiler 1, and an air preheater 2, a dust remover 3, an induced draft fan 4, a desulfurization absorption tower 5 and a chimney 7 which are sequentially connected with the boiler 1 through a flue, wherein the air preheater 2 is respectively connected with an air inlet 101 and an air blower 6 of the boiler 1 through an air supply pipeline, an air supply heater 8 is arranged at an inlet or an outlet of the air blower 6, the air supply heater 8 is provided with a hot water inlet 81 and a hot water outlet 82, a flue gas waste heat exchanger 9 and a hot water cooling device 10 are sequentially connected between the hot water inlet 81 and the hot water outlet 82 through a hot water pipeline, and a hot water power driving device 11 is arranged on the hot water pipeline.
The hot water power driving unit 11 may be a circulation pump, and hot water circulates by the hot water power driving unit 11. The flue gas entering the desulfurization absorption tower 5 is subjected to mixing heat exchange by desulfurization slurry sprayed by a spraying system of the desulfurization absorption tower 5, and the desulfurization slurry absorbs the waste heat in the flue gas and then falls into a slurry tank at the bottom of the desulfurization absorption tower; desulfurization absorption tower 5 is equipped with thick liquid circulating pipe 51, flue gas waste heat exchanger 9 can set up on the thick liquid circulating pipe 51, the desulfurization thick liquid is in the thick liquid circulating pipe 51 in cycle use and pass through the absorptive heat flue gas waste heat exchanger 9 transmits for hot water, and transmits for via hot water air supply heater 8, air supply heater 8 gives air heater 2's air with heat transfer, also be the make-up air of boiler 1 to realized the follow the waste heat utilization of draught fan 4 export flue gas. After passing through the air preheater 2, the low-grade flue gas waste heat is improved into high-grade heat energy, so that the recycling efficiency of the flue gas waste heat can be improved, and the heat pump effect is realized. The heat medium water after heat exchange and temperature reduction by the air supply heater 8 flows through the heat medium water cooling device 10 for further cooling and temperature reduction and then returns to the flue gas waste heat exchanger 9. The desulfurization slurry after heat release and cooling of the heat medium water can be sprayed into the desulfurization absorption tower 5 from a spraying device, so that the temperature and the humidity of the flue gas at the outlet of the desulfurization system 5 are reduced, and the effects of strengthening desulfurization and dust removal, reducing the moisture content of the flue gas at the outlet of the desulfurization tower and the white smoke of a chimney, reducing desulfurization water supplement and wastewater discharge and the like can be achieved. The heating medium water cooling device 10 is arranged to improve the heat exchange temperature difference of the flue gas waste heat exchanger 9, strengthen the cooling effect on the desulfurization slurry and even the flue gas, further reduce the temperature and the humidity of the flue gas, and improve the white elimination effect of the chimney, which is particularly important when the cooling capacity of the air supply heater 8 is poor in the season with higher ambient temperature. The number of the desulfurization slurry circulating pipes 51 can be one or more, and the flue gas waste heat exchanger 9 can be arranged on one slurry circulating pipe 51, or on a plurality of slurry circulating pipes 51.
Of course, the flue gas waste heat exchanger 9 can also be arranged inside the desulfurization absorption tower 5, for example, in a slurry pool, the flue gas waste heat exchanger 9 absorbs the heat of the desulfurization slurry in the slurry pool in the desulfurization absorption tower 5, so that the temperature of the slurry is reduced, and the flue gas temperature and the humidity at the outlet of the desulfurization absorption tower 5 are reduced by mixing and heat exchange with the flue gas through slurry spraying.
The heat medium water cooling device 10 may be a mechanical ventilation tower, a water spray tower, an air cooling tower, a heat pump, or an external cold source, such as a river, a sea, a lake, a reservoir, etc., as long as it can cool the heat medium water.
Fig. 2 is a schematic structural diagram of an improved embodiment based on fig. 1. Referring to fig. 2, in a preferred embodiment, the hot water cooling unit 10 is coupled in parallel with a hot water bypass and control valve bank 12. The control valve group 12 may include a plurality of valves, for example, as shown in fig. 2, and may be provided on the hot water bypass and the two side pipes of the hot water cooler 10, respectively. The function is as follows: when the ambient temperature is low, the cooling capacity of the blower heater 8 is high, and the flow rate of the heating medium water passing through the heating medium water cooling device 10 can be reduced or shut off by the heating medium water bypass and the control valve group 12.
Fig. 3 is a schematic structural diagram of another modified embodiment based on fig. 1. Referring to fig. 3, in a preferred embodiment, the flue gas waste heat exchanger 9 is disposed in a flue at an outlet of the desulfurization tower 5, and the flue gas waste heat exchanger 9 directly absorbs the flue gas waste heat and reduces the temperature and humidity of the flue gas. Of course, the flue gas waste heat exchanger may also be disposed in the flue at the inlet of the desulfurization absorption tower 5. The flue gas waste heat exchanger 9 can be a dividing wall type heat exchanger, namely flue gas and heat medium water are not directly contacted, but are conducted through the wall surface of the heat exchanger; the flue gas waste heat exchanger 9 can also be a mixed heat exchanger, namely, flue gas and heat medium water are directly mixed for heat exchange, and the heat of the flue gas is directly absorbed by the heat medium water.
Fig. 4 is a schematic structural diagram of an improved embodiment based on fig. 3. Referring to fig. 4, in a preferred embodiment, the supply air heater 8 is connected in parallel with a first hot water bypass and a first control valve group 13. The first control valve group 13 may include a plurality of valves, and for example, as shown in fig. 4, may be provided on the first hot water bypass and the both side pipes of the supply air heater 8, respectively. The function is as follows: when the ambient temperature is high, the cooling capacity of the air supply heater 8 is weak, and the flow rate of the hot water passing through the air supply heater 8 can be adjusted or closed by the first hot water bypass and the first control valve group 13, so that the energy consumption of the hot water driving device 11 is reduced.
Of course, the configuration in which the blower heater 8 in the embodiment shown in fig. 4 is connected in parallel with the first hot water bypass and the first control valve group 13 may also be adopted in the system configuration of the blower heater 8 in the embodiment shown in fig. 1 and other drawings. The embodiment of fig. 2 in which the hot water cooler 10 is connected in parallel with the hot water bypass and control valve block 12 can also be used in the system configuration of the hot water cooler 10 in the embodiment of fig. 3 or in the other embodiments of the drawings.
Fig. 5 is a schematic structural diagram of another modified embodiment based on fig. 3. Referring to fig. 5, in a preferred embodiment, the flue gas waste heat exchanger 9 is a water spraying tower, and the water spraying tower 9 is disposed on an outlet flue of the desulfurization absorption tower 5. The low-temperature heat medium water from the heat medium water outlet 82 of the air supply heater 8 or the heat medium water cooling device 10 is sprayed into the water spraying tower 9 to perform mixing heat exchange with the flue gas entering the water spraying tower 9, so that the temperature of the flue gas is reduced, and the humidity is reduced; meanwhile, the heat medium water is heated, the temperature is increased, the moisture in the other part of the flue gas is condensed and separated out and falls into the bottom of the water spraying tower 9 together with the heat medium water, and the recovered water enters a heat medium water pipeline and is sent to the air supply heater 8 to heat the air supply. It should be noted that, under this kind of scheme, along with time, the flue gas comdenstion water will increase gradually, and this part of water can be used for other users, and this is not repeated here.
Fig. 6 is a schematic structural diagram of a modified embodiment based on fig. 5. Referring to fig. 6, in a preferred embodiment, the flue gas waste heat exchanger 9' is a water spray tower arranged at the upper part of the desulfurization absorption tower 5. That is, the upper body of the desulfurization absorption tower 5 may be extended partially to serve as the body of the water spray tower, which may make the overall structure more compact. In this case, the structure of the liquid collecting device 901 below the flue gas waste heat exchanger 9' may adopt the structure of the liquid collecting device adopted by the inventor in the flue gas desulfurization wastewater evaporative concentration treatment device in chinese patent ZL 2017205747458. And will not be described in detail herein.
In a preferred embodiment, the flue gas waste heat exchanger 9' may also be disposed in the chimney 7, that is, a part of the chimney 7 is used as a tower body of a water spraying tower.
In a preferred embodiment, a first flue gas waste heat exchanger 31 is arranged between the air preheater 2 and the dust remover 3. This allows recovering the residual heat of the outlet flue gas of the air preheater 2. The boiler air supply heater 8 sends low-grade heat extracted from the smoke at the outlet of the induced draft fan 4 to the hearth of the boiler 1 through a part of the air preheater 2, so that the direct fuel saving effect can be achieved, and the utilization efficiency is high; the other part of the high-grade heat is converted into high-grade heat through the increase of the temperature of the outlet flue gas of the air preheater 2, and the first flue gas waste heat exchanger 31 can transfer the high-grade heat to other heat users, such as condensed water of a heating or heating steam turbine. Therefore, conversion from low-grade heat to high-grade heat of the flue gas waste heat and gradient recycling of the flue gas waste heat are realized, the utilization efficiency of the flue gas waste heat can be improved, and the heat pump efficiency is high. Meanwhile, the inlet flue gas temperature of the dust remover 3 is reduced by the first flue gas waste heat exchanger 31, so that the specific resistance and the volume flow of the flue gas are reduced, the efficiency of the dust remover 3 can be improved, and the removal of partial vulcanization components can be facilitated.
Of course, the inlet or the outlet of the induced draft fan 4 may be provided with a third flue gas waste heat exchanger (not shown in the figure), which has the advantage that the wear of the flue gas to the heat exchanger after dust removal is greatly reduced.
In a preferred embodiment, the air preheater 2 is provided with a second flue gas waste heat exchanger 21 in parallel. That is to say, the flue gas inlet and the flue gas outlet of the second flue gas waste heat exchanger 21 are respectively connected with the flue gas inlet flue and the flue gas outlet flue of the air preheater 2, that is, the bypass flue of the air preheater 2 is provided, and the second flue gas waste heat exchanger is arranged in the bypass flue. Because the air temperature at the inlet of the air preheater 2 can be increased by the boiler air supply heater 8, the demand of high-temperature flue gas at the inlet of the air preheater 2 is reduced, the bypass flue and the second flue gas waste heat exchanger 21 can fully utilize high-grade heat, for example, the high-grade heat can be transmitted to other heat users, so that the conversion efficiency and the gradient utilization efficiency of low-grade heat of boiler flue gas to high-grade heat are further improved, and the heat pump effect is prominent.
When the supply air heater 8 is disposed at the inlet of the blower 6, the supply air heater 8 may be disposed in a detachable manner (for example, may be in a hanging manner, or may be detachably connected or turned over). That is, the blower heater 8 may be separated from the inlet of the blower 6, for the purpose of: when the blower heater 8 is normally used, the blower heater 8 can be brought into close contact with the inlet of the blower 6. When the summer ambient temperature is high, the blowing heater 8 can be separated when the blowing heating capability is poor, so that the blowing heater 8 and the inlet of the blower 6 are separated by a certain distance, and the inlet resistance of the blower 6 is reduced. The boiler flue gas energy-saving and white-eliminating device provided by the invention can fully recover flue gas waste heat, has an obvious heat pump effect, can improve the grade and utilization efficiency of recovered heat energy, and can improve the dust removal efficiency of an electrostatic dust collector and the desulfurization efficiency of a desulfurizing tower through reduction of the temperature of the flue gas, reduce the moisture content of discharged smoke and pollutant carrying, reduce the white smoke emission phenomenon of a chimney, reduce water consumption, recover part of water, and play a role in energy conservation and environmental protection.
It should be appreciated by those of skill in the art that while the present invention has been described in terms of several embodiments, not every embodiment includes only a single embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including technical equivalents which are related to the embodiments and which are combined with each other to illustrate the scope of the present invention.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (12)
1. The utility model provides an energy-conserving white device that disappears of boiler flue gas, a serial communication port, it include the boiler and through the flue with air heater, dust remover, draught fan, desulfurization absorption tower, chimney that the boiler is connected in proper order, air heater has through the supply-air pipe 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 entry and hot media water export, hot media water entry with flue gas waste heat exchanger and hot media water cooling device have connected gradually through hot media water pipeline between the hot media water export, be equipped with hot media water power drive on the hot media water pipeline.
2. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the desulfurization absorption tower is provided with a slurry circulating pipe, and the flue gas waste heat exchanger is arranged on the slurry circulating pipe.
3. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the flue gas waste heat exchanger is arranged on a flue of an inlet or an outlet of the desulfurization absorption tower.
4. The boiler flue gas energy-saving and whitening reduction device according to claim 3, wherein the flue gas waste heat exchanger is a hybrid heat exchanger.
5. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the flue gas waste heat exchanger is arranged in a desulfurizing tower.
6. The boiler flue gas energy-saving and whitening elimination device according to claim 1, wherein the flue gas waste heat exchanger is a water spray tower, and the water spray tower is arranged on the upper part of the desulfurization absorption tower or on an outlet flue of the desulfurization absorption tower or in the chimney.
7. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the heat medium water cooling device is a mechanical draft tower or a water spraying tower or an air cooling tower or a heat pump or an external cold source.
8. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the hot water cooling device is connected with a hot water bypass and a control valve in parallel.
9. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the supply air heater is connected with a first hot water bypass and a control valve in parallel.
10. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein a first flue gas waste heat exchanger is arranged on a flue between the air preheater and the dust remover.
11. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein the air preheater is provided with a second flue gas waste heat exchanger in parallel.
12. The boiler flue gas energy-saving and whitening reduction device according to claim 1, wherein a third flue gas waste heat exchanger is arranged at an inlet or an outlet of the induced draft fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297081.4A CN108679637A (en) | 2018-04-04 | 2018-04-04 | A kind of energy saving white device that disappears of boiler smoke |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810297081.4A CN108679637A (en) | 2018-04-04 | 2018-04-04 | A kind of energy saving white device that disappears of boiler smoke |
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| CN108679637A true CN108679637A (en) | 2018-10-19 |
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| CN201810297081.4A Pending CN108679637A (en) | 2018-04-04 | 2018-04-04 | A kind of energy saving white device that disappears of boiler smoke |
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| CN109442459A (en) * | 2018-11-16 | 2019-03-08 | 天津大学 | A kind of gas fired-boiler flue gas takes off white system |
| CN110260674A (en) * | 2019-06-13 | 2019-09-20 | 国家能源投资集团有限责任公司 | Air cooling system and control method for thermal power plant |
| CN110285439A (en) * | 2019-07-25 | 2019-09-27 | 李爱华 | Flue gas processing method and its device |
| CN111853845A (en) * | 2020-07-07 | 2020-10-30 | 刘峰 | Accurate control system of phase change heat exchanger working medium side temperature |
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| CN109442459A (en) * | 2018-11-16 | 2019-03-08 | 天津大学 | A kind of gas fired-boiler flue gas takes off white system |
| CN110260674A (en) * | 2019-06-13 | 2019-09-20 | 国家能源投资集团有限责任公司 | Air cooling system and control method for thermal power plant |
| CN110285439A (en) * | 2019-07-25 | 2019-09-27 | 李爱华 | Flue gas processing method and its device |
| CN111853845A (en) * | 2020-07-07 | 2020-10-30 | 刘峰 | Accurate control system of phase change heat exchanger working medium side temperature |
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Application publication date: 20181019 |