CN107670490A - A kind of method and system for eliminating the coloured plume of industrial smoke - Google Patents
A kind of method and system for eliminating the coloured plume of industrial smoke Download PDFInfo
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- CN107670490A CN107670490A CN201711133365.1A CN201711133365A CN107670490A CN 107670490 A CN107670490 A CN 107670490A CN 201711133365 A CN201711133365 A CN 201711133365A CN 107670490 A CN107670490 A CN 107670490A
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- flue gas
- slurry pool
- air
- pipeline
- tower
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- 239000000779 smoke Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 87
- 238000001816 cooling Methods 0.000 claims abstract description 73
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003546 flue gas Substances 0.000 claims abstract description 61
- 239000007921 spray Substances 0.000 claims abstract description 47
- 238000002347 injection Methods 0.000 claims abstract description 26
- 239000007924 injection Substances 0.000 claims abstract description 26
- 238000010992 reflux Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 14
- 210000002966 serum Anatomy 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 229910052602 gypsum Inorganic materials 0.000 description 4
- 239000010440 gypsum Substances 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of method and system for eliminating the coloured plume of industrial smoke, methods described, it is characterized in that, provided with flue gas scrubber and spray cooling tower, the slurries in air and flue gas scrubber slurry pool are introduced into the spray cooling tower, in spray cooling tower, it is small droplet by slurries injection, air contact with introducing cooling spray tower exchanges heat, and the air to be heated up after heat exchange discharges after demisting is handled, the slurry reflux to cool after heat exchange to flue gas scrubber.Technical scheme contrasts prior art, it is not necessary to expand chimney, can start and stop at any time, there is low cost of investment, cooling efficiency high, the advantages of device is reliable.
Description
Technical field
The invention belongs to atmosphere pollution to administer field, and specially a kind of method for eliminating the coloured plume of industrial smoke is with being
System.
Background technology
In wet flue gas governance process, such as flue gas desulfurization, dedusting, washing slurries can make flue gas saturation, carry droplet shape secretly
Into water smoke, salt fog, smog, in fume emission mouth, when a large amount of vapor condense to the cold, caused gypsum rain, coloured plume or white
Phenomena such as mist, extremely bad influence is all caused to surrounding enviroment and district image.In China some areas, progressively will
Pollutant emission standard is included in the improvement of gypsum rain, coloured plume, white haze.
It is to administer gypsum rain, coloured plume, the effective measures of white haze to reduce smog discharge temperature and saturation water capacity, existing
Having in technology, common way is to increase condenser/heat exchanger and demister before fume emission, or in neat stress
Cold air hybrid cooling is introduced, is that heat exchanger volume is huge the shortcomings that these methods, high cost is perishable, easily block fouling,
Required air quantity is big, it is necessary to which large-scale mixing arrangement, increases chimney when introducing cold air.Scheme also is to use water at low temperature
The mode washed cools down former flue gas, but its device is complicated, and water consumption is big, and is difficult to solve the corrosion and scaling in commercial Application, blocks
The problems such as.
The content of the invention
The invention provides a kind of simple in construction, chimney need not be transformed largely, efficiently, the elimination work of low cost
The method and system of the coloured plume of industry flue gas, specific scheme are as follows：
A kind of method for eliminating the coloured plume of industrial smoke, it is characterised in that provided with flue gas scrubber and spray cooling tower, by sky
Slurries in gas and flue gas scrubber slurry pool introduce the spray cooling tower, are micro- by slurries injection in spray cooling tower
Small droplet, the air contact with introducing cooling spray tower exchange heat, and the air to be heated up after heat exchange discharges after demisting is handled, and exchanges heat
The slurry reflux to cool afterwards is to flue gas scrubber.
Further, outside flue gas scrubber, external smoke heat replacing device is increased, by the cigarette that flue gas scrubber is pending
Gas and purifying smoke to be discharged introduce the smoke heat replacing device, using pending flue gas as thermal source, are exchanged heat by isolating
Mode, purifying smoke to be discharged is discharged into air again after heating up.
Preferably, after purifying smoke to be discharged is warming up to more than 50 DEG C, it is discharged into air.
A kind of system for eliminating the coloured plume of industrial smoke, it is characterised in that including flue gas scrubber and spray cooling tower,
The spray cooling tower is provided with injection point, serum outlet and the air outlet slit set from top to bottom, demister, misting cooling
Section, air intake and the second slurry pool, the misting cooling section are provided with shower nozzle, and the first slurry pool in flue gas scrubber passes through
The injection point and serum outlet of pipeline and spray cooling tower are connected, and in spray cooling tower, slurries are sprayed for mist droplet
Afterwards with air contact, exchanged heat, the air to be heated up after heat exchange is discharged, the slurry reflux to cool after heat exchange to flue gas washing
Tower.
On the basis of such scheme, further improve or preferable scheme also includes：
Apparatus of the present invention include smoke heat replacing device, and the heat source medium pipeline that is isolated and cold is provided with the smoke heat replacing device
Medium pipeline, the entrance of the heat source medium pipeline are connected with pending flue gas delivery pipe road, the outlet of heat source medium pipeline with
The entrance connection of flue gas scrubber；The entrance of cold medium pipeline and the exhanst gas outlet of flue gas scrubber connect, cold medium pipeline
Outlet is connected with outside gas equipment or air.
The flue gas scrubber and the circulation of slurries in smoke cooling tower can be realized by three kinds of forms：
Scheme one：The shower nozzle of the misting cooling section is connected by the pipeline provided with circulating pump with the second slurry pool, misting cooling
The injection point and serum outlet of tower are arranged in the tower wall of the second slurry pool side.
Scheme two：The part shower nozzle of the misting cooling section is directly connected by the injection point of pipeline and spray cooling tower
Connect, the injection point is arranged in the tower wall above the second slurry pool, passes through the pipeline provided with circulating pump and the first slurry pool
Connection；Other shower nozzles of misting cooling section are connected by the pipeline provided with circulating pump with the second slurry pool；The serum outlet is set
Put in the tower wall of the second slurry pool side, be connected by pipeline with the first slurry pool, the second slurry pool leads to the first slurry pool
Cross gravity flow balance liquid level.
Scheme three：The shower nozzle of the misting cooling section is directly connected to by the injection point of pipeline and spray cooling tower, institute
State in the tower wall that injection point is arranged on above the second slurry pool, be connected by the pipeline provided with circulating pump with the first slurry pool,
The serum outlet is arranged in the tower wall of the second slurry pool side, is connected by pipeline with the first slurry pool, the second slurry pool
Pass through the balance liquid level that flows automatically with the first slurry pool.
Beneficial effect：
Technical scheme contrasts prior art, and flue gas washing part uses the drop after cooling straight in flue gas scrubber
Connect heat transfer, the part vaporous water of saturated steam occurs in desulfurizing tower cold using fine particulates and other pollutants as nucleus of condensation
Solidifying, the aqueous water of condensation is removed by high efficiency demister, while is also stripped of part fine particulates and other pollutants.Spraying
Cooling tower uses droplet and air contact, direct evaporating-cooling, relative to other heat exchange, heat-transfer equipment, air hybrid technology
Compare, it is not necessary to expand chimney, can start and stop at any time, there is low cost of investment, cooling efficiency high, the advantages of device is reliable, through place
After reason, exit gas temperature can reduce 10 DEG C~40 DEG C, and humidity of flue gas reduces 30%~90%, and white haze is greatly reduced.
Brief description of the drawings
Fig. 1 is the flow chart of the embodiment of the present invention 1；
Fig. 2 is the flow chart of the embodiment of the present invention 2；
Fig. 3 is the structural representation of the embodiment of the present invention 1；
Fig. 4 is the structural representation of the embodiment of the present invention 2；
Fig. 5 is the structural representation of the embodiment of the present invention 3；
Fig. 6 is the structural representation of the embodiment of the present invention 4.
Embodiment
For the technical scheme and operation principle that the present invention is furture elucidated, below in conjunction with the accompanying drawings with specific embodiment to this
Invention is described further.
Embodiment 1：
By taking limestone-gypsum method flue gas desulfurization as an example, as shown in figure 1, a kind of method for eliminating the coloured plume of industrial smoke, it flows
Journey is as follows：
Outside flue gas scrubber, increase external spray cooling tower, will（It is cold）Slurries in air and flue gas scrubber slurry pool
The spray cooling tower is introduced, is small droplet by slurries injection in spray cooling tower, the sky with introducing cooling spray tower
Gas contact heat-exchanging, the air to be heated up after heat exchange discharge after demisting is handled, the slurry reflux to cool after heat exchange to flue gas scrubber.
System based on above-mentioned flow includes flue gas scrubber 1 and spray cooling tower 2, its structure as shown in figure 3,
The flue gas scrubber is provided with exhanst gas outlet 101, demister 102, flue gas washing section 105, smoke inlet 103 from top to bottom
With the first slurry pool.
The spray cooling tower 1 is provided with air outlet slit, demister 201, misting cooling section 202, air intake from top to bottom
203 and second slurry pool, the tower wall of the second slurry pool side be provided with injection point and serum outlet.The misting cooling
Section 202 is provided with multiple shower nozzles, and the injection point and serum outlet of the second slurry pool pass through the pipeline provided with circulating pump 205 respectively
It is connected with the first slurry pool, misting cooling Duan Ze is connected by the pipeline provided with circulating pump 204 with the second slurry pool, passes through shower nozzle
It is mist droplet by slurries injection.The air intake 203 is connected with blower fan, and extraneous air is blasted in spray cooling tower 2, with
The contact of slurries droplet is exchanged heat, and the air to be heated up after heat exchange is directly discharged to air after the processing of demister 201
In, the slurries to cool after heat exchange are then back in flue gas scrubber 1.
In spray cooling tower 2, the slurry temperature of the second slurry pool is 25~30 DEG C, in flue gas scrubber 1, demister
The flue-gas temperature of outlet is 20~38 DEG C.
By taking a 600MW flue gas scrubber as an example, the m of exhaust gas volumn 3,200,0003/ h, former 48 DEG C of exhaust gas temperature, is proven,
After present system, 30 DEG C of exhaust gas temperature ＜ after cooling, desulfurization fume exhaust saturated steam amount is reduced to 73t/ from 208t/h
H, air evaporation water consumption 23t/h.Smoke evacuation steam vapour amount reduces 112t/h, and the aqueous reduction ratio of disengagement section smoke evacuation reaches 65%,
Calculated according to 4500 hours run times, year water saving can reach 500,000 tons, white haze is greatly reduced.
Embodiment 2：
As shown in Fig. 2 based on embodiment 1, further to improve regulation effect, outside flue gas scrubber, it is further added by external
Smoke heat replacing device 3, the pending flue gas of flue gas scrubber 1 and purifying smoke to be discharged are introduced into the flue gas heat exchange and filled
Put 3, using pending flue gas as thermal source, by way of isolating and exchanging heat, make purifying smoke to be discharged heat up after to 50 DEG C
After above, then air is discharged into, saturated steam flue gas is become unsaturated flue gas, improve the range of scatter of fume emission, white haze
Phenomenon disappears substantially.
The heat source medium pipeline being isolated is provided with as shown in figure 4, the system based on above-mentioned flow, in its smoke heat replacing device
With cold medium pipeline, the entrance 302 of the heat source medium pipeline is connected with pending flue gas delivery pipe road, heat source medium pipeline
Outlet 304 is connected with the smoke inlet of flue gas scrubber 1；The entrance 301 of cold medium pipeline and the exhanst gas outlet of flue gas scrubber 1
301 connections, the outlet 303 of cold medium pipeline is connected with air.
The setting of the spray cooling tower 2 and with the connection of flue gas scrubber with embodiment 1, in spray cooling tower 2, spraying
The shower nozzle of cooling section is connected by the pipeline provided with circulating pump with the second slurry pool, and the injection point and slurries of spray cooling tower go out
Mouth is arranged in the tower wall of the second slurry pool side.
Embodiment 3：
As shown in figure 5, on the basis of embodiment 1, according to engineer applied needs, in spray cooling tower 2, the misting cooling section
Part shower nozzle be directly connected to by the injection point of pipeline and spray cooling tower 2, the injection point is arranged on the second slurries
In tower wall above pond, it is connected by the pipeline provided with circulating pump 207 with the first slurry pool, the flow of the circulating pump meets spraying
Serum recycle amount needed for the cooling of cooling tower slurries.Other shower nozzles of misting cooling section by the pipeline provided with circulating pump 206 with
Second slurry pool connects, and the circulating pump meets the low temperature slurries amount needed for slurries in spray cooling tower.The slurries of spray cooling tower
Outlet is arranged in the tower wall of the second slurry pool side, is connected by pipeline with the first slurry pool, the second slurry pool and the first slurry
Liquid pool passes through the balance liquid level that flows automatically.Compared to embodiment 1, this example eliminates slurries pump, and structure is simpler.
Embodiment 4：
As shown in fig. 6, on the basis of embodiment 3, according to engineer applied needs, make misting cooling section entirely through pipeline and spray
The injection point of fog cooling tower is directly connected to, and removes the interior circulation in spray cooling tower, and the injection point is arranged on the second slurry
In tower wall above liquid pool, it is connected by the pipeline provided with circulating pump with the first slurry pool, the institute of circulation pumping flue gas scrubber 1
The higher value of the low temperature slurries amount needed and the recycle slurry liquid measure needed for spray cooling tower 2.Compared to embodiment 3, its structure is more
Simply.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, the present invention
Claimed scope is by appended claims, specification and its equivalent thereof.
Claims (8)
- A kind of 1. method for eliminating the coloured plume of industrial smoke, it is characterised in that, will provided with flue gas scrubber and spray cooling tower Slurries in air and flue gas scrubber slurry pool introduce the spray cooling tower, in spray cooling tower, are by slurries injection Small droplet, the air contact with introducing cooling spray tower are exchanged heat, and the air to be heated up after heat exchange is discharged after demisting is handled, changed The slurry reflux to cool after heat is to flue gas scrubber.
- 2. a kind of method for eliminating the coloured plume of industrial smoke according to claim 1, it is characterised in that in flue gas washing Outside tower, increase external smoke heat replacing device, the pending flue gas of flue gas scrubber and purifying smoke to be discharged are introduced into institute Smoke heat replacing device is stated, using pending flue gas as thermal source, by way of isolating and exchanging heat, makes smoke-purifying gas lift to be discharged Wen Houzai is discharged into air.
- 3. a kind of method for eliminating the coloured plume of industrial smoke according to claim 2, it is characterised in that to be discharged is net After change flue gas is warming up to more than 50 DEG C, air is discharged into.
- 4. a kind of system for eliminating the coloured plume of industrial smoke, it is characterised in that including flue gas scrubber and spray cooling tower, institute State spray cooling tower provided with injection point, serum outlet and the air outlet slit set from top to bottom, demister, misting cooling section, Air intake and the second slurry pool, the misting cooling section are provided with shower nozzle, and the first slurry pool in flue gas scrubber passes through pipe The injection point and serum outlet of road and spray cooling tower are connected, and in spray cooling tower, slurries are sprayed for after mist droplet With air contact, exchanged heat, the air to be heated up after heat exchange is discharged, the slurry reflux to cool after heat exchange to flue gas scrubber.
- 5. a kind of system for eliminating the coloured plume of industrial smoke according to claim 4, it is characterised in that changed including flue gas Thermal, the heat source medium pipeline and cold medium pipeline being isolated, the heat source medium pipe are provided with the smoke heat replacing device The entrance on road is connected with pending flue gas delivery pipe road, and the outlet of heat source medium pipeline and the smoke inlet of flue gas scrubber connect Connect；The entrance of cold medium pipeline and the exhanst gas outlet of flue gas scrubber connect, the outlet of cold medium pipeline and outside gas equipment Or air connection.
- A kind of 6. system of coloured plume of elimination industrial smoke according to claim 4 or 5, it is characterised in that the spray The shower nozzle of fog cooling section is connected by the pipeline provided with circulating pump with the second slurry pool, the injection point and slurries of spray cooling tower Outlet is arranged in the tower wall of the second slurry pool side.
- A kind of 7. system of coloured plume of elimination industrial smoke according to claim 4 or 5, it is characterised in that the spray The part shower nozzle of fog cooling section is directly connected to by the injection point of pipeline and spray cooling tower, and the injection point is arranged on In tower wall above two slurry pools, it is connected by the pipeline provided with circulating pump with the first slurry pool；Other sprays of misting cooling section Head is connected by the pipeline provided with circulating pump with the second slurry pool；The serum outlet is arranged on the tower wall of the second slurry pool side On, it is connected by pipeline with the first slurry pool, the second slurry pool and the first slurry pool pass through the balance liquid level that flows automatically.
- A kind of 8. system of coloured plume of elimination industrial smoke according to claim 4 or 5, it is characterised in that the spray The shower nozzle of fog cooling section is directly connected to by the injection point of pipeline and spray cooling tower, and the injection point is arranged on the second slurry In tower wall above liquid pool, it is connected by the pipeline provided with circulating pump with the first slurry pool, the serum outlet is arranged on second In the tower wall of slurry pool side, it is connected by pipeline with the first slurry pool, the second slurry pool and the first slurry pool pass through Self-leveling Weigh liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133365.1A CN107670490A (en) | 2017-11-16 | 2017-11-16 | A kind of method and system for eliminating the coloured plume of industrial smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133365.1A CN107670490A (en) | 2017-11-16 | 2017-11-16 | A kind of method and system for eliminating the coloured plume of industrial smoke |
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| CN107670490A true CN107670490A (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711133365.1A Pending CN107670490A (en) | 2017-11-16 | 2017-11-16 | A kind of method and system for eliminating the coloured plume of industrial smoke |
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| CN (1) | CN107670490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237681A (en) * | 2019-07-11 | 2019-09-17 | 青岛达能环保设备股份有限公司 | The coal-fired flue-gas of collaboration deep purifying takes off white system |
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| CN110237681A (en) * | 2019-07-11 | 2019-09-17 | 青岛达能环保设备股份有限公司 | The coal-fired flue-gas of collaboration deep purifying takes off white system |
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