CN115007315A - System for eliminating condensable particles and white smoke plume by wet desulphurization - Google Patents
System for eliminating condensable particles and white smoke plume by wet desulphurization Download PDFInfo
- Publication number
- CN115007315A CN115007315A CN202210703587.7A CN202210703587A CN115007315A CN 115007315 A CN115007315 A CN 115007315A CN 202210703587 A CN202210703587 A CN 202210703587A CN 115007315 A CN115007315 A CN 115007315A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas
- white smoke
- scr
- smoke plume
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 49
- 239000002245 particle Substances 0.000 title claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000003546 flue gas Substances 0.000 claims abstract description 74
- 239000007789 gas Substances 0.000 claims abstract description 33
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 31
- 230000023556 desulfurization Effects 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000010790 dilution Methods 0.000 claims abstract description 10
- 239000012895 dilution Substances 0.000 claims abstract description 10
- 239000012719 wet electrostatic precipitator Substances 0.000 claims abstract description 10
- 239000003245 coal Substances 0.000 claims description 12
- 239000003085 diluting agent Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 14
- 239000003344 environmental pollutant Substances 0.000 abstract description 10
- 231100000719 pollutant Toxicity 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 239000002912 waste gas Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- -1 chimney Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000003303 reheating Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
- B04C2009/001—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with means for electrostatic separation
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention provides a system for eliminating condensable particles and white smoke plume by wet desulphurization flue gas, which comprises: SCR denitrification facility, heat exchanger, dust remover, SCR desulphurization unit, cyclone, wet electrostatic precipitator, chimney, air distribution fan, fan flow control valve, air supply flow control valve. According to the invention, the dilution gas is introduced through the air distribution fan, the formation of CPM and liquid water is accelerated, the CPM is converted from a gas state to a liquid state, and is favorably removed by the cyclone separator and the wet electrostatic dust collector, so that the removal efficiency of the CPM is greatly improved; the cyclone separator can recover condensed water diluted by the flue gas and supply the condensed water to a desulfurization system or other systems for use, so that the water supplement amount of the system is reduced; the moisture content of the diluted smoke is reduced, and the white smoke plume phenomenon can be obviously eliminated; partial flue gas after dilution is introduced into a primary air system of coal-fired equipment, so that the waste gas surplus generated in the pollutant treatment process can be fully utilized, and the total pollutant discharge amount is reduced.
Description
Technical Field
The invention belongs to the technical field of air pollution control, and particularly relates to a system for eliminating condensable particles and white smoke plume in wet desulphurization.
Background
The coal-fired flue gas contains non-negligible particulate matters with aerodynamic diameters smaller than 1 mu m, the main component of the particulate matters is sulfate, and the particulate matters contain partial nitrate, heavy metals and organic components. Such substances are gaseous in the flue gas condition before desulfurization, and are converted into liquid or solid state with the decrease of the flue gas temperature and the increase of the humidity after entering the desulfurization system, and the substances are called Condensable Particulate Matters (CPM). Compared with the conventional smoke dust, the CPM has the characteristics of small particle size, large area, strong activity and easiness in attaching toxic and harmful substances, the CPM has long retention time in the atmosphere and long conveying distance, and primary PM2.5 formed by emission of the CPM is a large cause of frequent haze.
The current CPM removal methods mainly include two types:
first, the main precursor SO is removed before CPM does not form particles 3 Mainly comprises a low-temperature electrostatic dust collector technology, wherein the low-temperature electrostatic dust collector reduces the smoke temperature to be below 80 ℃, and the desulfurization outlet SO can be realized by matching with a wet limestone-gypsum method for desulfurization in a low-sulfur coal project 3 The concentration is lower than 1ppm, but the successful application of the technology in high-sulfur coal is still to be verified, and the low-sulfur coal is also low in ChinaThe temperature heat exchanger has leakage problem, thereby influencing the normal operation of the unit;
secondly, the CPM is removed by a high-efficiency dust remover after being formed, the typical technology is wet electric dust removal, the wet electric dust remover can effectively collect smoke dust, gypsum rain, CPM, heavy metals and the like, but the CPM removal rate of the wet electric dust remover is only 30-40% according to the application condition.
In addition to CPM, white plume is also a major target for atmospheric pollutant emission control. White smoke plume is caused by large moisture content of smoke, and the prior whitening technology is mainly divided into two types: first, reheating and condensing; second, reheating is performed. The two modes reduce the amount of condensation and separation of gaseous water in the flue gas after the gaseous water enters the atmospheric environment relatively through a heating mode to reduce or eliminate the phenomenon of white smoke plume, but the heating energy consumption can increase the emission of pollutants. In order to reduce energy consumption, the flue gas can be condensed to separate out part of water, and then the flue gas is heated in a small range, so that part of gaseous water in the flue gas can be recovered, but pollutant reduction is not obvious, and the method is not suitable for comprehensive popularization.
Disclosure of Invention
At present, a treatment process and a technical route aiming at CPM are lacked, and the CPM is controlled only by a cooperative treatment mode to limit the generation, conversion and emission of a precursor SO as to achieve the aim of reducing the CPM emission, for example, SO is reduced by selecting a high-performance SCR denitration catalyst 2 To SO 3 The conversion rate of (2) and the ammonia slip concentration are controlled simultaneously, so as to control the generation and emission of CPM, and the defect of low efficiency is caused.
If the treatment of the white smoke plume is simply in the form of reheating, reheating and condensing, the method is not economical and is not beneficial to reducing the pollutant discharge amount.
Because the CPM and the white smoke plume appear on a coal-fired boiler and a coal-fired kiln furnace which adopt wet desulphurization, the development of a process technology which can further control the CPM emission and synergistically treat the white smoke plume after the boiler or the kiln furnace achieves ultra-low emission is urgently needed.
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The invention adopts the following technical scheme:
in some optional embodiments, a system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas is provided, comprising: SCR desulphurization unit still includes: and the air distribution fan is arranged on the output side of the SCR desulfurization device so as to introduce diluent gas for reducing the temperature and the humidity of the flue gas output by the SCR desulfurization device.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization of flue gas further comprises: cyclone separators and wet electrostatic precipitators; the cyclone separator is arranged on the output sides of the SCR desulfurization device and the air distribution fan, and the wet electrostatic dust collector is arranged on the output side of the cyclone separator; and the flue gas output by the SCR desulfurization device is mixed with the diluent gas introduced by the air distribution fan and then enters the cyclone separator for gas-liquid separation, and a part of separated gas is treated by the wet electrostatic dust collector and then is discharged.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: and the smoke gas return pipeline is arranged between the output side of the cyclone separator and the input side of the coal-fired equipment, and the other part of gas separated by the cyclone separator is conveyed to the coal-fired equipment through the smoke gas return pipeline to be used as primary air.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: and the air supply flow control valve is arranged on the flue gas return pipeline so as to adjust the air volume of the gas conveyed to the coal-fired equipment by the cyclone separator.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: and the fan flow control valve is arranged on an output pipeline of the air distribution fan so as to adjust the air volume of the dilution air introduced by the air distribution fan.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: and a condensed water supply line provided on an output side of the cyclone, through which the condensed water separated by the cyclone is output as makeup water.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: the coal burning device comprises an SCR denitration device and a dust remover, wherein the SCR denitration device is arranged on the output side of the coal burning device, and the dust remover is arranged between the SCR denitration device and the SCR desulfurization device.
Further, the system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas further comprises: and the heat exchanger is arranged on the flue gas return pipeline and a pipeline connecting the SCR denitration device and the dust remover.
The invention has the following beneficial effects:
1. according to the invention, the dilution gas is introduced through the air distribution fan to reduce the temperature and the humidity, so that the formation of the CPM and the liquid water is accelerated, the CPM is converted from a gas state to a liquid state, and is favorably removed by the cyclone separator and the wet electrostatic dust collector, so that the removal efficiency of the CPM is greatly improved;
2. the cyclone separator can recover condensed water diluted by the flue gas and supply the condensed water to a desulfurization system or other systems for use, so that the water supplement amount of the system is reduced;
3. the moisture content of the diluted smoke is reduced, and the white smoke plume phenomenon can be obviously eliminated;
4. partial flue gas after dilution is introduced into a primary air system of coal-fired equipment, so that the waste gas surplus generated in the pollutant treatment process can be fully utilized, and the total pollutant discharge amount is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a system for eliminating condensable particles and white smoke plume in wet flue gas desulfurization according to the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.
In view of the insignificant effects of conventional abatement routes on CPM removal and white plume abatement, in some illustrative embodiments, the present invention provides a system for abating condensable particulates and white plume in a wet desulfurization flue gas, as shown in fig. 1, specifically comprising: the system comprises an SCR denitration device 3, a heat exchanger 4, a dust remover 5, an SCR desulphurization device 6, a cyclone separator 7, a wet electrostatic dust remover 8, a chimney 9, an air distribution fan 10, a fan flow control valve 11 and an air supply flow control valve 12.
Flue gas generated by the coal-fired equipment 1 firstly passes through the economizer 2 and then enters the SCR denitration device 3, and the economizer 2 can reduce smoke discharge loss and save fuel. The SCR denitration device 3 is provided on the output side of the coal burning facility 1, the dust collector 5 is provided on the output side of the SCR denitration device 3, and the SCR desulfurization device 6 is provided on the output side of the dust collector 5. The flue gas that coal fired equipment 1 produced carries out the desorption through SCR denitrification facility 3 NOx in with the flue gas, and dust remover 5 sets up between SCR denitrification facility 3 and SCR desulphurization unit 6, and the flue gas of desorption NOx carries out the desorption through dust remover 5 with the particulate matter in the flue gas, and the flue gas is at last through SCR desulphurization unit 6, with the SO in the flue gas 2 And (4) removing.
The air distribution fan 10 is arranged on the output side of the SCR desulfurization device 6 and used for introducing the diluent gas into the system, and the introduced diluent gas is mixed with the flue gas output by the SCR desulfurization device 6, so that the temperature and the humidity of the desulfurized flue gas are reduced. The diluent gas is air or other process waste gas with high oxygen content and low temperature and humidity, wherein the oxygen content of the diluent gas is higher than that of the flue gas generated by the coal-fired equipment 1, and the temperature and humidity value is lower than that of the flue gas output by the SCR desulfurization device 6.
Different from the direct discharge of the conventional route or the discharge after passing through an electrostatic precipitator, the invention adds the air distribution fan 10, the diluent gas is introduced through the air distribution fan 10, the flue gas desulfurized by the SCR desulfurization device 6 is mixed with the diluent gas under the action of the air distribution fan 10, the humidity is reduced, the temperature is also reduced, meanwhile, a large amount of condensed water is formed in the process, and the formation of CPM is promoted through two mechanisms of condensation growth and collision and growth.
The cyclone separator 7 is arranged on the output side of the SCR desulfurization device 6 and the air distribution fan 10, so that the flue gas output by the SCR desulfurization device 6 is mixed with the diluent gas introduced by the air distribution fan 10 and then enters the cyclone separator 7 to perform gas-liquid separation. Cyclone 7 separates liquid water and flue gas, prevents that too much moisture from getting into follow-up system, has certain removal effect to CPM simultaneously, and removes the effect not only because cyclone 7 self separation effect, also includes carrying, colliding and the interception effect of liquid water.
The wet electrostatic precipitator 8 is disposed on the output side of the cyclone separator 7, and a part of the gas separated by the cyclone separator 7 enters the wet electrostatic precipitator 8, and the flue gas treated by the wet electrostatic precipitator 8 is finally discharged through a chimney 9. Through the effect of wet electrostatic precipitator 8, can further reduce the emission of CPM in the flue gas, many documents have verified that wet electrostatic precipitator all has certain control effect to can condense particulate matter and filterable particulate matter, and this text is no longer repeated. After passing through the wet electrostatic precipitator 8, the flue gas is normally discharged along with the chimney 9, and the white smoke plume can be basically eliminated.
The invention also includes: the flue gases are led back to the line 13. The flue gas return pipeline 13 is arranged between the output side of the cyclone separator 7 and the input side of the coal burning equipment 1, and the other part of the gas separated by the cyclone separator 7 is conveyed to the coal burning equipment 1 through the flue gas return pipeline 13 to be used as primary air. Because the oxygen content in the flue gas of the normal coal-fired equipment 1 is about 9 percent, after the dilution gas is introduced by the air distribution fan 10 for adjustment, the oxygen content in the flue gas is improved to the level capable of being used by the coal-fired equipment 1, and therefore, the other path of flue gas is sent to a primary air system of the coal-fired equipment 1 through the flue gas return pipeline 13 to be used as primary air.
The flue gas after gas-liquid separation by the cyclone separator 7 is divided into two paths, one path is treated by the wet electrostatic dust collector 8 and then discharged, and the other path is led back to the coal-fired equipment 1 to be used as primary air, so that the CPM content and white smoke plume in the flue gas are further reduced, the waste gas surplus generated in the pollutant treatment process is fully utilized, the total pollutant discharge is reduced, and the energy-saving and low-consumption advantages are realized.
The invention also includes: and a condensed water supply line 14 provided on the output side of the cyclone 7, and the condensed water separated by the cyclone 7 is output as make-up water to a desulfurization system or other systems through the condensed water supply line 14, thereby reducing the amount of make-up water in the system and saving energy.
The flue gas subjected to denitration, dust removal and desulfurization is mixed with supplemented dilution gas, the flue gas subjected to wet desulfurization is supersaturated flue gas and contains a large amount of moisture, when the dilution gas is mixed with the flue gas, the flue gas is diluted and cooled to condense out a large amount of moisture, the flue gas is subjected to gas-liquid separation, the separated condensed water can be used as supplemented water of a desulfurization system, the gas subjected to gas-liquid separation is divided into two paths, one path enters a subsequent wet electrostatic precipitator 8 and is discharged through a chimney 9, and the other path is led to coal-fired equipment 1 by a circulating fan and is supplemented as primary air to realize internal combustion supporting. Therefore, the invention not only realizes the efficient treatment of CPM and white smoke plume by the matching use of the cyclone separator 7, the wet electrostatic dust collector 8, the air distribution fan 10, the smoke return pipeline 13 and the condensed water supply pipeline 14, greatly improves the removal effect and obviously eliminates the white smoke plume phenomenon, but also can fully utilize various kinds of smoke and liquid generated in the treatment process, improve the utilization rate of the system and simultaneously reduce the exhaust emission. In addition, the structural design of the invention can be combined with the original treatment process of an enterprise, the existing treatment system does not need to be greatly improved, and the invention has the advantage of low improvement cost.
The blast flow control valve 12 is disposed on the flue gas return line 13 to adjust the amount of air of the gas delivered from the cyclone 7 to the coal burning facility 1. The fan flow control valve 11 is disposed on an output pipeline of the air distribution fan 10, specifically, a pipeline connecting the air distribution fan 10 with the cyclone separator 7 and the SCR desulfurization device 6, so as to adjust the air volume of the dilution air introduced by the air distribution fan 10. Through the cooperative control action of the fan flow control valve 11 and the air supply flow control valve 12, the air distribution air quantity and the primary air supply quantity can be adjusted according to the smoke emission characteristics of different types of fixed sources, and the optimal ratio is controlled on the basis of satisfying the white smoke plume elimination and CPM removal, wherein the optimal ratio is determined by the smoke emission characteristics of the fixed sources. Therefore, the invention ensures the CPM and white smoke plume removing effect without increasing the treatment air volume of subsequent treatment facilities, and the original system can be normally used.
The heat exchanger 4 is arranged on a flue gas return pipeline 13 and a pipeline for connecting the SCR denitration device 6 with the dust remover 5, specifically, a refrigerant channel of the heat exchanger 4 is communicated with the flue gas return pipeline 13, and a heat medium channel is communicated with a pipeline for connecting the SCR denitration device 6 with the dust remover 5, so that heat of flue gas discharged by the coal-fired equipment 1 is transferred to the cyclone separator 7 and conveyed to gas of the coal-fired equipment 1, and the flue gas can be used as primary air conveniently.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas comprises: the SCR desulphurization device is characterized by also comprising: and the air distribution fan is arranged on the output side of the SCR desulfurization device so as to introduce diluent gas for reducing the temperature and the humidity of the flue gas output by the SCR desulfurization device.
2. The system for eliminating condensable particles and white smoke plume in wet desulfurization flue gas as claimed in claim 1, further comprising: cyclone separators and wet electrostatic precipitators;
the cyclone separator is arranged on the output sides of the SCR desulfurization device and the air distribution fan, and the wet electrostatic dust collector is arranged on the output side of the cyclone separator;
and the flue gas output by the SCR desulfurization device is mixed with the diluent gas introduced by the air distribution fan and then enters the cyclone separator for gas-liquid separation, and a part of separated gas is treated by the wet electrostatic dust collector and then is discharged.
3. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 2, further comprising: and the smoke gas return pipeline is arranged between the output side of the cyclone separator and the input side of the coal-fired equipment, and the other part of gas separated by the cyclone separator is conveyed to the coal-fired equipment through the smoke gas return pipeline to be used as primary air.
4. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 3, further comprising: and the air supply flow control valve is arranged on the flue gas return pipeline so as to adjust the air volume of the gas conveyed to the coal-fired equipment by the cyclone separator.
5. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 4, further comprising: and the fan flow control valve is arranged on an output pipeline of the air distribution fan so as to adjust the air volume of the dilution air introduced by the air distribution fan.
6. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 5, further comprising: and a condensed water supply line provided on an output side of the cyclone, through which the condensed water separated by the cyclone is output as makeup water.
7. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 6, further comprising: the coal burning device comprises an SCR denitration device and a dust remover, wherein the SCR denitration device is arranged on the output side of the coal burning device, and the dust remover is arranged between the SCR denitration device and the SCR desulfurization device.
8. The system for eliminating condensable particles and white smoke plume in wet desulphurization flue gas as claimed in claim 7, further comprising: and the heat exchanger is arranged on the flue gas return pipeline and a pipeline for connecting the SCR denitration device with the dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703587.7A CN115007315A (en) | 2022-06-21 | 2022-06-21 | System for eliminating condensable particles and white smoke plume by wet desulphurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703587.7A CN115007315A (en) | 2022-06-21 | 2022-06-21 | System for eliminating condensable particles and white smoke plume by wet desulphurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115007315A true CN115007315A (en) | 2022-09-06 |
Family
ID=83077620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210703587.7A Pending CN115007315A (en) | 2022-06-21 | 2022-06-21 | System for eliminating condensable particles and white smoke plume by wet desulphurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115007315A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2454021A1 (en) * | 2009-07-17 | 2012-05-23 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natural Resources Canada | Hot sieving electrostatic precipitator |
| CN108465372A (en) * | 2018-05-29 | 2018-08-31 | 上海电力学院 | A kind of plume of condensation twice disappears white system |
| CN108465340A (en) * | 2018-05-13 | 2018-08-31 | 中国大唐集团科学技术研究院有限公司华中分公司 | White plume cancellation element and method |
| CN110075698A (en) * | 2019-04-22 | 2019-08-02 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that energy-saving plume is eliminated |
| CN112058010A (en) * | 2020-08-05 | 2020-12-11 | 浙江菲达环保科技股份有限公司 | Colored smoke plume governing system of cement plant kiln tail flue gas |
| CN112915763A (en) * | 2019-12-05 | 2021-06-08 | 山东泰开环保科技有限公司 | CPM high-efficient desorption device |
| WO2022021951A1 (en) * | 2020-07-30 | 2022-02-03 | 浙江开尔新材料股份有限公司 | New efficient waste heat recycling and flue gas white smoke removal integrated device |
| CN217646611U (en) * | 2022-06-21 | 2022-10-25 | 中国环境科学研究院 | System for eliminating condensable particles and white smoke plume in wet desulphurization flue gas |
-
2022
- 2022-06-21 CN CN202210703587.7A patent/CN115007315A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2454021A1 (en) * | 2009-07-17 | 2012-05-23 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natural Resources Canada | Hot sieving electrostatic precipitator |
| CN108465340A (en) * | 2018-05-13 | 2018-08-31 | 中国大唐集团科学技术研究院有限公司华中分公司 | White plume cancellation element and method |
| CN108465372A (en) * | 2018-05-29 | 2018-08-31 | 上海电力学院 | A kind of plume of condensation twice disappears white system |
| CN110075698A (en) * | 2019-04-22 | 2019-08-02 | 山西华仁通电力科技有限公司 | The flue gas advanced purification system and its method that energy-saving plume is eliminated |
| CN112915763A (en) * | 2019-12-05 | 2021-06-08 | 山东泰开环保科技有限公司 | CPM high-efficient desorption device |
| WO2022021951A1 (en) * | 2020-07-30 | 2022-02-03 | 浙江开尔新材料股份有限公司 | New efficient waste heat recycling and flue gas white smoke removal integrated device |
| CN112058010A (en) * | 2020-08-05 | 2020-12-11 | 浙江菲达环保科技股份有限公司 | Colored smoke plume governing system of cement plant kiln tail flue gas |
| CN217646611U (en) * | 2022-06-21 | 2022-10-25 | 中国环境科学研究院 | System for eliminating condensable particles and white smoke plume in wet desulphurization flue gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204574069U (en) | Coal fired power plant minimum discharge environmental protection island system | |
| CN100503013C (en) | Method and system for combinedly removing SO2, NOx and Hg in coal smoke gas by using recombustion of biomass | |
| CN104759192A (en) | Low-cost coal-fired flue gas various pollutant ultralow emission system and low-cost coal-fired flue gas various pollutant ultralow emission method | |
| CN104100964A (en) | Synergistic removal system and method for realizing ultra-low emission of multiple pollutants of smoke of thermal power plant | |
| EP1474219A1 (en) | Steam-generating combustion system and method for emission control using oxygen enhancement | |
| CN110627146A (en) | Desulfurization wastewater treatment system and desulfurization wastewater treatment method | |
| CN106964243A (en) | A kind of integrative coordinated removing sulfur trioxide device and its method of work suitable for sulphur coal | |
| CN112268293A (en) | Large-scale thermal power generating unit flue gas active coke purification system and method | |
| CN205182509U (en) | High -efficient dust removal deNOx systems of glass stove high temperature flue gas | |
| CN217646611U (en) | System for eliminating condensable particles and white smoke plume in wet desulphurization flue gas | |
| CN205127750U (en) | Desulphurization of exhaust gas denitration of coke oven flue and waste heat recovery's integrated system | |
| CN113304591A (en) | Method and system for purifying flue gas of carbon roasting furnace | |
| CN109647158B (en) | Flue gas desulfurization and denitrification system of circulating fluidized bed boiler and treatment method thereof | |
| CN105498473A (en) | Wet method flue gas desulfurizing system and circulating fluidized bed boiler system | |
| CN205102149U (en) | Multiple gas cleaning is demercuration device in coordination | |
| CN204582930U (en) | A kind of low cost coal-fired flue-gas multiple pollutant minimum discharge system | |
| CN106000099A (en) | Coal combustion system capable of realizing near zero emission of atmospheric pollutants | |
| CN105195013A (en) | Denitration and demercuration apparatus and method with CFB (circulating fluidized bed) boiler | |
| CN105222143A (en) | Mercury removal device and method are worked in coordination with in one kind of multiple gas cleanings | |
| CN108373936A (en) | A kind of flue gas purification system and method for the gasification of fire coal coupled biological matter | |
| CN105233671A (en) | Glass furnace high-temperature flue gas high-efficiency dust-removing denitration system | |
| WO2024036884A1 (en) | System and method for treating coal-fired flue gas | |
| CN101648112A (en) | Flue gas purifying device and flue gas purifying method for trapping inhalable particulate | |
| CN111878835A (en) | Coupling process and system for carbon-containing solid waste combustion utilization and sintering flue gas purification treatment | |
| CN115007315A (en) | System for eliminating condensable particles and white smoke plume by wet desulphurization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |