CN107883780A - A kind of wet process of FGD white cigarette controlling device - Google Patents
A kind of wet process of FGD white cigarette controlling device Download PDFInfo
- Publication number
- CN107883780A CN107883780A CN201711314645.2A CN201711314645A CN107883780A CN 107883780 A CN107883780 A CN 107883780A CN 201711314645 A CN201711314645 A CN 201711314645A CN 107883780 A CN107883780 A CN 107883780A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- flue
- heat exchanger
- enters
- air
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
Abstract
The present invention relates to a kind of wet process of FGD white cigarette controlling device, it mainly includes sintering machine, heat exchanger and desulfurizing tower, flue gas sets flue shutter between some bellows in large flue end are sintered as caused by sintering machine, make high-temperature flue gas by drawing baffle board door of flue into being exchanged heat with the Cryogenic air being drawn into by air blower in heat exchanger in heat exchanger, flue gas after heat exchange enters electric cleaner after entering other bellows flue gases mixing of sintering large flue by heat exchanger exit, flue gas after dedusting is extracted by main exhauster enters chimney by chimney inlet baffle door all the way, another way enters booster fan by booster fan inlet baffle door, flue gas after being pressurized by booster fan enters in desulfurizing tower, high temperature air after heat exchange is entered in the chimney of desulfurizing tower and mixed with the low-temperature flue gas after desulfurization.The present invention can effectively eliminate " white cigarette " phenomenon, energy-saving and environmental protection to industry etc. have lead demonstration effect.
Description
Technical field
The invention belongs to wet process of FGD white cigarette Treatment process field, and in particular to a kind of wet process of FGD white cigarette is controlled
Device is managed, realizes wet process of FGD white cigarette removal effect.
Background technology
In order to meet increasingly strict discharge standard, solve current worsening quality of air environment, the nearly more than ten years I
The carry out smoke gas treatment transformation successively of state's large-type sinterer, thermal power generation unit, at present desulfurizer about 70% use wet method
Desulfurization, SO is cut down to a certain extent2The total emission volumn of pollutant, but the thing followed is present after wet desulphurization device puts into operation
" gypsum rain " and white cigarette conditions of streaking.White cigarette hangover is mainly to carry excessive saturated vapor, aerosol particle in flue gas.By
Saturation wet flue gas temperature in discharge process reduces after desulfurization, plus flue-gas temperature and the environment temperature temperature difference be big and ambient pressure
Low reason, the water in flue gas reach hypersaturated state, and water vapour will condense around chimney, be mixed plus with aerosol particle
With, it is more difficult to spread in time, it is particularly even more serious in winter, this phenomenon so as to form the phenomenon of " white cigarette billows ".Not only shape
Into poor visual effect, corporate image is influenceed.And a large amount of thermals source are discharged into air, cause hot-air to pollute.It is main both at home and abroad
The desulfurization technology wanted be broadly divided into condensing heat-exchange method, GGH heat exchange method, increase set in chimney+chimney guiding device, electrostatic precipitator,
Five kinds of ring cold flue gas combination drying method.
Wet desulphurization at present has accounted for more than the 85% of the desulfurizer gone into operation.Humidity of flue gas after wet desulphurization
Higher (15-20%), flue-gas temperature is relatively low (50-55 DEG C), when the flue gas after desulfurization is entered in surrounding air, vapor in flue gas
After hypersaturated state, part water vapor condensation fogging, so as to " white cigarette " phenomenon occur.
Developed country requires that chimney emission temperature is higher than 80 DEG C, so can't see " white cigarette ".China is to chimney emission temperature
Do not require, therefore " white cigarette " phenomenon occur, easy smog curls up, and influences the air quality of trip.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of wet process of FGD white cigarette for above-mentioned prior art to control
Device is managed, realizes the management goal for removing " white cigarette ".
Technical scheme is used by the present invention solves the above problems：A kind of wet process of FGD white cigarette controlling device, it
Mainly include sintering machine, heat exchanger and desulfurizing tower, flue gas is between some bellows in large flue end are sintered as caused by sintering machine
Flue shutter is set, high-temperature flue gas is entered by drawing baffle board door of flue in heat exchanger with being drawn into heat exchanger by air blower
In Cryogenic air exchanged heat, the flue gas after heat exchange pass through heat exchanger exit enter sintering large flue other bellows cigarettes
Enter electric cleaner after gas mixing, the flue gas after dedusting is extracted by main exhauster enters cigarette by chimney inlet baffle door all the way
Chimney, another way enter booster fan by booster fan inlet baffle door, and the flue gas after being pressurized by booster fan enters desulfurization
In tower, the high temperature air after heat exchange is entered in the chimney of desulfurizing tower and mixed with the low-temperature flue gas after desulfurization.
Preferably, the flue shutter is arranged between the high temperature bellows of end 3~4 of sintering machine and other bellows.
Preferably, the heat exchanger is convection recuperator, is made up of inside heat exchanger finned tube coil, by air blower in pipe
Air is blasted, high-temperature flue gas is walked outside pipe, exchanger base sets ash bucket, dust remover is set inside ash bucket.
Compared with prior art, the advantage of the invention is that：
1st, " white cigarette " phenomenon can be effectively eliminated；
2nd, heating flue gas is carried out without the additionally consumption energy；
3rd, operation expense is low；、
4th, the present apparatus without block, it is corrosion-free；
5th, the present apparatus can lift the diffusivity of flue gas；
6th, the energy-saving and environmental protection of the present apparatus to industry etc., which have, leads demonstration effect.
Brief description of the drawings
Fig. 1 is the combination diagram of present invention sintering flue gas low-temperature denitrification apparatus.
Fig. 2 is the structural representation of denitrating tower in the present invention.
In figure：
Sintering machine 1
Heat exchanger 2
Desulfurizing tower 3
Sinter large flue 4
Flue shutter 5
Draw baffle board door of flue 6
Air blower 7
Electric cleaner 8
Main exhauster 9
Chimney inlet baffle door 10
Booster fan inlet baffle door 11
Booster fan 12.
Embodiment
The present invention is described in further detail with reference to embodiments.
Referring to shown in Fig. 1-2, the present invention relates to a kind of wet process of FGD white cigarette controlling device, mainly include sintering machine 1,
Heat exchanger 2 and desulfurizing tower 3, using the higher characteristic of the tail bellows flue-gas temperature of sintering machine 1, by the high temperature of some bellows of afterbody
Flue gas leads to heat exchanger 2 by pipeline, and the inside of heat exchanger 2 sets coil pipe, and coil design uses finned tube, manages interior by air blower
Air is blasted, high-temperature flue gas is walked outside pipe, medium trend is similar to waste heat boiler form inside and outside pipe, and exchanger base sets ash bucket,
Inside sets dust remover.Heat smoke is returned in sintering large flue 4 after convection recuperator internal heat by pipeline, it is ensured that is burnt
Tie the temperature and air balance inside large flue 4.
Flue shutter 5 is set in the present embodiment between the high temperature bellows of the end of sintering machine 1 3~4 and other bellows, will
The tail bellows of sintering large flue are divided into two parts, wherein the high-temperature flue gas of the high temperature bellows of end 3~4 is drawn and by drawing
Go out baffle board door of flue 6 to be sent into heat exchanger 2, the heat exchanger 2 is convection recuperator, by heat exchanger shell, inside heat exchanger by
Finned tube coil forms, and exchanger base sets ash bucket, and dust remover is set inside ash bucket.By air blower 7 by cool exterior air
It is pumped into the high-temperature flue gas sent in heat exchanger 2 with the high temperature bellows of end 3~4 and carries out convection current pipe type heat transfer, cold air passes through
Temperature rise becomes hot-air after being exchanged heat with high-temperature flue gas, and the hot-air is connected by pipeline with the top chimney of desulfurizing tower 3.
And the high-temperature flue-gas after exchanging heat reduces, sintering is returned to greatly by flue by the gas outlet of heat exchanger 2
In flue 4 (the large flue position of the opposite side of flue shutter 5), and the high temperature cigarette discharged with other tail bellows of former sintering machine 1
Enter electric cleaner 8 after gas mixing, the flue gas after dedusting extracts by chimney inlet baffle door 10 to enter all the way by main exhauster 9
Enter chimney, another way enters booster fan 12 by booster fan inlet baffle door 11, the cigarette after being pressurized by booster fan 12
Gas enters in desulfurizing tower 3.High temperature air after heat exchanger exchanges heat introduces desulfurizing tower exit stack position by exhaust pass
Mixed with desulfurizing tower low exit temperature flue gas, lift overall flue gas exhaust gas temperature, saturation wet flue gas enters with hot-air in chimney
Row mixing and heat exchange, saturation wet flue gas temperature rise, while the water content of wet flue gas reduces after mixing, and it is existing to eliminate " white cigarette "
As.
The theoretical research of " disappearing white " of the invention is according to as follows：
(1) saturation of the air water content changes with temperature and pressure, when the water content in flue gas is more than aqueous in air
" white haze " phenomenon during amount, is occurred as soon as, when the water content in flue gas is less than the water content in air, just can't see " white haze ".
(2) at different temperatures (pressure of 1 normal atmosphere), the water content in flue gas is no more than values below, then can't see
" white cigarette ", refer to shown in table 1 and Fig. 2：
Under the different temperatures of table 1 (pressure of 1 normal atmosphere), the maximum water holding capacity table of comparisons in flue gas
Fig. 2 explanations：1. AB broken lines are maximum water holding capacity curve in flue gas in figure, AB line region below be can't see " white cigarette ".
Whether " 2. white cigarette " visible, also with local atmospheric pressure, relative humidity of atomsphere, flue gas diffusion velocity, diffusion height, smoke temperature drop
The factors such as difference are relevant.3. flue gas is after chimney discharge and atmosphere, it is also contemplated that there is about 5~10 DEG C of temperature not waited
Drop.
During work, using the higher characteristic of rear of sintering machine bellows flue-gas temperature, by the high-temperature flue gas of some bellows of afterbody
Convection recuperator is led to by pipeline, coil pipe is set inside convection recuperator, coil design uses finned tube, manages interior by air blast
Machine blasts air, and high-temperature flue gas is walked outside pipe, and medium trend is similar to waste heat boiler form inside and outside pipe, and exchanger base sets ash
Bucket, inside set dust remover.Heat smoke is returned in large flue after convection recuperator internal heat by pipeline, it is ensured that opium
Temperature and air balance inside road.
In addition to the implementation, it is all to use equivalent transformation or equivalent replacement present invention additionally comprises there is other embodiment
The technical scheme that mode is formed, it all should fall within the scope of the hereto appended claims.
Claims (3)
- A kind of 1. wet process of FGD white cigarette controlling device, it is characterised in that：It mainly include sintering machine (1), heat exchanger (2) and Desulfurizing tower (3), flue gas sets flue shutter between some bellows in large flue (4) end are sintered as caused by sintering machine (1) (5) high-temperature flue gas, is made to enter by drawing baffle board door of flue (6) in heat exchanger (2) with being drawn into heat exchanger by air blower (7) (2) Cryogenic air in is exchanged heat, and the flue gas after heat exchange enters other of sintering large flue (4) by heat exchanger exit Enter electric cleaner (8) after the mixing of bellows flue gas, the flue gas after dedusting is extracted by main exhauster (9) passes through chimney entrance all the way Baffle door (10) enters chimney, and another way enters booster fan (12) by booster fan inlet baffle door (11), passes through supercharging Flue gas after blower fan (12) supercharging enters in desulfurizing tower (2), and the high temperature air after heat exchange enters the chimney of desulfurizing tower (2) In mixed with the low-temperature flue gas after desulfurization.
- A kind of 2. wet process of FGD white cigarette controlling device according to claim 1, it is characterised in that：The flue shutter (5) it is arranged between the high temperature bellows of end 3~4 of sintering machine (1) and other bellows.
- A kind of 3. wet process of FGD white cigarette controlling device according to claim 1, it is characterised in that：The heat exchanger (2) it is convection recuperator, is made up of inside heat exchanger finned tube coil, air is blasted by air blower (7) in pipe, high temperature is walked outside pipe Flue gas, exchanger base set ash bucket, dust remover are set inside ash bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314645.2A CN107883780A (en) | 2017-12-09 | 2017-12-09 | A kind of wet process of FGD white cigarette controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314645.2A CN107883780A (en) | 2017-12-09 | 2017-12-09 | A kind of wet process of FGD white cigarette controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883780A true CN107883780A (en) | 2018-04-06 |
Family
ID=61773719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711314645.2A Pending CN107883780A (en) | 2017-12-09 | 2017-12-09 | A kind of wet process of FGD white cigarette controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883780A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434924A (en) * | 2018-06-07 | 2018-08-24 | 北京国能中电节能环保技术股份有限公司 | A kind of flue gas eliminating white smoke system and method |
| CN112827329A (en) * | 2021-02-07 | 2021-05-25 | 丁克敬 | White smoke treatment device |
| CN108434924B (en) * | 2018-06-07 | 2024-04-19 | 北京国能中电节能环保技术股份有限公司 | System and method for eliminating white smoke from smoke |
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| CN103446872A (en) * | 2013-09-13 | 2013-12-18 | 鞍钢集团工程技术有限公司 | Desulphurization purification method and desulphurization purification equipment for low-temperature sintering flue gas |
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| CN206139011U (en) * | 2016-09-28 | 2017-05-03 | 江苏垦乐节能环保科技有限公司 | System for desulfurization simultaneously of sintering flue gas is out of stock |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103446873A (en) * | 2013-09-13 | 2013-12-18 | 鞍钢集团工程技术有限公司 | Desulfurization purifying method and equipment for high-concentration SO2 sintering flue gas |
| CN103446872A (en) * | 2013-09-13 | 2013-12-18 | 鞍钢集团工程技术有限公司 | Desulphurization purification method and desulphurization purification equipment for low-temperature sintering flue gas |
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| US20170108275A1 (en) * | 2015-03-27 | 2017-04-20 | Insttute Of Process Engineering, Chinese Academy Of Sciences | Process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108434924A (en) * | 2018-06-07 | 2018-08-24 | 北京国能中电节能环保技术股份有限公司 | A kind of flue gas eliminating white smoke system and method |
| CN108434924B (en) * | 2018-06-07 | 2024-04-19 | 北京国能中电节能环保技术股份有限公司 | System and method for eliminating white smoke from smoke |
| CN112827329A (en) * | 2021-02-07 | 2021-05-25 | 丁克敬 | White smoke treatment device |
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