CN208482211U - A kind of flue gas eliminating white smoke system - Google Patents
A kind of flue gas eliminating white smoke system Download PDFInfo
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- CN208482211U CN208482211U CN201820881459.0U CN201820881459U CN208482211U CN 208482211 U CN208482211 U CN 208482211U CN 201820881459 U CN201820881459 U CN 201820881459U CN 208482211 U CN208482211 U CN 208482211U
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 212
- 239000003546 flue gas Substances 0.000 title claims abstract description 200
- 239000000779 smoke Substances 0.000 title claims abstract description 56
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 43
- 230000003009 desulfurizing Effects 0.000 claims abstract description 43
- 238000002156 mixing Methods 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000005039 chemical industry Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 238000009833 condensation Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 12
- 229920002456 HOTAIR Polymers 0.000 description 11
- 235000019628 coolness Nutrition 0.000 description 11
- 238000006477 desulfuration reaction Methods 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 210000004940 Nucleus Anatomy 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001965 increased Effects 0.000 description 2
- VVTBQCXLZQYGQE-PVTAQEPXSA-N mitoguazone hydrochloride Chemical compound Cl.Cl.NC(N)=N\N=C(/C)\C=N\N=C(N)N VVTBQCXLZQYGQE-PVTAQEPXSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 210000003739 Neck Anatomy 0.000 description 1
- -1 Wherein Chemical compound 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 201000010874 syndrome Diseases 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
The utility model relates to chemical industry, environmental technology field more particularly to a kind of flue gas eliminating white smoke systems.Specifically, flue gas eliminating white smoke system includes the first flue gas condenser set gradually, desulfurizing tower, the second flue gas condenser, blower, demister, cigarette wind blending flue and chimney；Wherein, the exhanst gas outlet of first flue gas condenser and the entrance of desulfurizing tower connect, the outlet of desulfurizing tower is connect with the smoke inlet of the second flue gas condenser, the exhanst gas outlet of second flue gas condenser and the entrance of demister connect, the outlet of demister is connect with the smoke inlet of cigarette wind blending flue, and the outlet of cigarette wind blending flue is connect with chimney；Wherein, the outlet of blower is connect with the air intake of the second flue gas condenser, the air outlet slit of second flue gas condenser is connect with the air intake of the first flue gas condenser, the air outlet slit of first flue gas condenser is connect with the air intake of cigarette wind blending flue, and the outlet of cigarette wind blending flue is connect with chimney.
Description
Technical field
The utility model relates to chemical industry, environmental technology field more particularly to a kind of flue gas eliminating white smoke systems.
Background technique
Wet flue gas desulfurization is a kind of sulfur removal technology being most widely used currently on the market, has desulfuration efficiency height, throws
Provide moderate, advantages of simple structure and simple.But the flue gas after desulfurization process directly passes through smoke stack emission and causes white plume, main cause
It is as follows:
1) wet saturated flue gas is formed by fast cooling condensation drop in diffusion process after smoke stack emission to atmosphere
White plume；
2) wet desulfurization system exiting flue gas contains drop, the SO not collected sufficiently by demister on a small quantity3Aerosol, flying dust
Pollutants are waited, the substances such as soluble salt are contained in drop, above-mentioned substance can be used as the nuclei of condensation and promote gas phase water fast in temperature-fall period
Quickly cooling coalescence is precipitated on the nuclei of condensation；
3) in flow process, due to air duct and chimney are radiated, there is in flue and chimney wet saturated flue gas after desulfurization
Partial gas phase water condensation is discharged into atmosphere by flue gas entrainment, this is also a major reason for causing white plume.
To sum up, eliminate wet desulphurization white plume, not only solve visual pollution, can also to pollutant depth emission reduction, and
Enhance the diffusivity of flue gas, environment protection significance is great.
The method of the white plume that removes smoke the most traditional is to heat flue gas after desulfurization, i.e. flue gas again using fume afterheat
Heat, typical technology have GGH (Gas GasHeater).However the technology due to early stage application exist blocking, leakage the problems such as, most
It is gradually abandoned in Chinese market eventually.With the continuous improvement of environmental requirement, developed area part power plant uses water-borne formula
GGH technical solution, heating desulfurizing tower export wet saturated flue gas, realize the elimination of white plume to a certain extent, thus obtain
More application.The technology of white plume is eliminated in above two wet saturated flue gas heating, is using reduction relative humidity
Method eliminates white cigarette, and flue gas water content does not change, only solves visual pollution, can not cooperate with and to take off while eliminating white cigarette
Depollution object.In consideration of it, thermal process is suggested flue gas condensing again, i.e., the temperature of wet saturated flue gas is first reduced, by part in flue gas
Water condensation is precipitated, and realizes the cooperation-removal of pollutant in the process.
Flue gas condensing needs a large amount of cold source that partial gas phase water condensation in flue gas is precipitated, and usual cold source is cold using recycling
But water.However, some factories can not provide recirculated cooling water, circulating water cooling device is separately provided not only and will increase system throwing
Money, and cooling device water consumption is higher than flue gas condensing water collecting amount, cannot achieve the steam vapour amount for reducing and being discharged into environment.
Utility model content
The purpose of this utility model is in view of the drawbacks of the prior art, to provide a kind of flue gas eliminating white smoke system and method.
Specifically, on the one hand, the utility model provides a kind of flue gas eliminating white smoke system, including the first cigarette set gradually
Gas condenser, desulfurizing tower, the second flue gas condenser, blower, demister, cigarette wind blending flue and chimney；
Wherein, the entrance of the exhanst gas outlet of the first flue gas condenser and desulfurizing tower connects, the outlet of desulfurizing tower and the second cigarette
The smoke inlet of gas condenser connects, and the exhanst gas outlet of the second flue gas condenser and the entrance of demister connect, and demister goes out
Mouth is connect with the smoke inlet of cigarette wind blending flue, and the outlet of cigarette wind blending flue is connect with chimney；
Wherein, the outlet of blower is connect with the air intake of the second flue gas condenser, and the air of the second flue gas condenser goes out
Mouth is connect with the air intake of the first flue gas condenser, the air of air outlet slit and cigarette wind the blending flue of the first flue gas condenser
The outlet of entrance connection, cigarette wind blending flue is connect with chimney.
Above-mentioned flue gas eliminating white smoke system, the flue gas eliminating white smoke system further includes electric precipitator, wherein electric precipitator
Outlet is connect with the smoke inlet of first flue gas condenser.
Above-mentioned flue gas eliminating white smoke system, the flue gas eliminating white smoke system further includes air-introduced machine, wherein the electric precipitator
Outlet and air-introduced machine entrance connect, the outlet of air-introduced machine is connect with the smoke inlet of first flue gas condenser.
Above-mentioned flue gas eliminating white smoke system, the flue gas eliminating white smoke system further includes air-introduced machine, wherein first flue gas
The exhanst gas outlet of condenser and the entrance of air-introduced machine connect, and the outlet of air-introduced machine is connect with the entrance of the desulfurizing tower.
Above-mentioned flue gas eliminating white smoke system, first flue gas condenser and the second flue gas condenser are wall-type heat exchange
Device.
On the other hand, the utility model provides a kind of flue gas eliminating white smoke method, includes the following steps:
Flue gas carries out first time heat exchange with cold air in the first flue gas condenser, and the flue gas after cooling enters desulfurization
Tower, flue gas are delivered to the second flue gas condenser again after desulfurizing tower desulfurization, in the second flue gas condenser flue gas and cold air into
Second of heat exchange of row, further cooling flue gas is delivered to demister dehumidifying；Flue gas after dehumidifying is in cigarette wind blending flue
It is blended with the hot-air from the second flue gas condenser, finally, blending flue gas is discharged by chimney；
Cold air is delivered to the second flue gas condenser by blower and flue gas carries out second of heat exchange, the cold sky after heating
Gas enters the first flue gas condenser, and absorbing the heat in flue gas again becomes hot-air, and hot-air is transported to cigarette wind blending cigarette
Road, and blended with the flue gas from demister, it finally blends flue gas and is discharged by chimney.
Above-mentioned flue gas eliminating white smoke method, before the first time heat exchange carries out, flue gas is first through electric precipitator dedusting.
Above-mentioned flue gas eliminating white smoke method, the flue gas are delivered to first flue gas condenser by air-introduced machine.
Above-mentioned flue gas eliminating white smoke method, before the first time heat exchange, the temperature of cold air is 30-70 DEG C, flue gas
Temperature is 100-160 DEG C；After the first time heat exchange, the temperature of hot-air is 70-130 DEG C, and the temperature of flue gas is 90-120
℃。
Above-mentioned flue gas eliminating white smoke method, before second of heat exchange, the temperature of cold air is -10-30 DEG C, the temperature of flue gas
Degree is 40-70 DEG C；After second of heat exchange, the temperature of cold air is 30-70 DEG C, and the temperature of flue gas is 30-60 DEG C.
The technical solution of the utility model have it is following the utility model has the advantages that
A kind of flue gas eliminating white smoke system and method abandoning tradition MGGH of the utility model uses water as heat transfer medium, adopts
Use cold air as cold source, cold source and flue gas heat exchange are changed into heat source after absorbing heat；After heat source is as blending medium and condensation
Wet saturated flue gas mixing, reach reduce mixed flue gas water capacity purpose.The utility model low, operating cost with cost of investment
The good advantage of low, white plume eradicating efficacy.
Detailed description of the invention
Fig. 1 is the process flow chart of some specific embodiments of the utility model,
1 is electric precipitator, and 2 be air-introduced machine, and 3 be the first flue gas condenser, and 4 be desulfurizing tower, and 5 be blower, and 6 be the second flue gas
Condenser, 7 be demister, and 8 blend flue for cigarette wind, and 9 be chimney, and 10 be flue gas condensing water out.
Specific embodiment
It is practical to this by following specific embodiments in order to fully understand the purpose of this utility model, feature and effect
It is novel to elaborate.The process of the utility model in addition to following the description, remaining be all made of this field conventional method or
Device.Following vocabularies of terms are unless otherwise stated, all have the normally understood meaning of those skilled in the art.
A kind of flue gas eliminating white smoke system and method abandoning tradition MGGH of the utility model uses water as heat transfer medium, adopts
Use cold air as cold source, after the wet saturated flue gas heat exchange of cold source and desulfurizing tower outlet absorbs heat, more than heat transferring medium entrance
The further Mist heat recovering of heat recovering heat exchanger, to be changed into heat source；Heat source is as blending medium and condensed wet full
It is mixed with flue gas, reaching reduces mixed flue gas water capacity purpose.
Specifically, one side according to the present utility model, the utility model provide a kind of flue gas eliminating white smoke system, including
The first flue gas condenser, desulfurizing tower, the second flue gas condenser, blower, demister, cigarette wind blending flue and the cigarette set gradually
Chimney；
Wherein, the entrance of the exhanst gas outlet of the first flue gas condenser and desulfurizing tower connects, the outlet of desulfurizing tower and the second cigarette
The smoke inlet of gas condenser connects, and the exhanst gas outlet of the second flue gas condenser and the entrance of demister connect, and demister goes out
Mouth is connect with the smoke inlet of cigarette wind blending flue, and the outlet of cigarette wind blending flue is connect with chimney；
Wherein, the outlet of blower is connect with the air intake of the second flue gas condenser, and the air of the second flue gas condenser goes out
Mouth is connect with the air intake of the first flue gas condenser, the air of air outlet slit and cigarette wind the blending flue of the first flue gas condenser
The outlet of entrance connection, cigarette wind blending flue is connect with chimney.
Wherein, first flue gas condenser of the utility model and the second flue gas condenser are dividing wall type heat exchanger.Its
In, the dividing wall type heat exchanger of the utility model can be plate heat exchanger, double pipe heat exchanger, shell-and-tube heat exchanger.
Wherein, the drop carried secretly in flue gas of the demister of the utility model for exporting in separating flue condenser, can
It arranges in the following manner: horizontal type, chevron shaped, V-shape, combined (such as diamond shape, X-type).Wherein, the flue gas condensing water of generation from
The discharge of flue gas condensing water out.
Wherein, the desulfurizing tower of the utility model is the desulfurizing tower of the types such as hollow-spraying-tower type, tray type.Desulfurizing tower is for taking off
Except the SO in flue gas2。
Wherein, the cigarette wind of the utility model blends flue, including smoke inlet, air intake and exhanst gas outlet.
Preferably, in some embodiments, the flue gas eliminating white smoke system further includes electric precipitator, wherein electricity
The outlet of deduster is connect with the smoke inlet of first flue gas condenser.It is cold that electric precipitator can enter the first flue gas in flue gas
The pollutants such as the flying dust in flue gas are removed before condenser, the flying dust that on the one hand can avoid in flue gas blocks condenser, on the other hand may be used
By reducing the nuclei of condensation, gas phase water rapid condensation and precipitation on the nuclei of condensation in temperature-fall period are avoided.
Most preferably, in some embodiments, the flue gas eliminating white smoke system further includes air-introduced machine, wherein institute
The entrance of the outlet and air-introduced machine of stating electric precipitator connects, the outlet of air-introduced machine and the smoke inlet of first flue gas condenser
Connection.Specifically, as shown in Figure 1, the flue gas eliminating white smoke system includes: electric precipitator 1, air-introduced machine 2, the first flue gas condenser
3, desulfurizing tower 4, blower 5, the second flue gas condenser 6, demister 7, cigarette wind blending flue 8, chimney 9 and flue gas condensing water out
10.Wherein electric precipitator 1, air-introduced machine 2, the first flue gas condenser 3, desulfurizing tower 4, the second flue gas condenser 6, demister 7, cigarette wind
Blending flue 8 and chimney 9 are set gradually along the flow direction of flue gas, wherein electric precipitator 1 is connect with air-introduced machine 2, air-introduced machine
2 connect with the first flue gas condenser 3, and the first flue gas condenser 3 is connect with desulfurizing tower 4, desulfurizing tower 4 and the second flue gas condenser 6
Connection, the second flue gas condenser 6 connect with demister 7, and demister 7 blends flue 8 with cigarette wind and connect, cigarette wind blending flue 8 and
Chimney 9 connects.Wherein, blower 5, the second flue gas condenser 6, the first flue gas condenser 3, cigarette wind blending flue 8 and chimney 9 along
Air circulation direction is sequentially connected.
The utility model can effectively control the conveying speed of flue gas by the way that air-introduced machine is arranged, and guarantee flue gas and cold air
Heat exchange effect, to be further ensured that effective progress of flue gas eliminating white smoke system.
Optionally, in some embodiments, the exhanst gas outlet of first flue gas condenser and air-introduced machine enter
Mouth connection, the outlet of air-introduced machine is connect with the entrance of the desulfurizing tower.
Another aspect according to the present utility model, the utility model provide a kind of flue gas eliminating white smoke method, including as follows
Step:
Flue gas carries out first time heat exchange with cold air in the first flue gas condenser, and the flue gas after cooling enters desulfurization
Tower, flue gas are delivered to the second flue gas condenser again after desulfurizing tower desulfurization, in the second flue gas condenser flue gas and cold air into
Second of heat exchange of row, the flue gas further to cool down are delivered to demister dehumidifying；Flue gas after dehumidifying is in cigarette wind blending flue
It is blended with the hot-air for carrying out the second flue gas condenser, finally, blending flue gas is discharged by chimney；
Cold air is delivered to the second flue gas condenser by blower and flue gas carries out the second heat exchange, the cold air after heating
The heat in flue gas is absorbed again as hot-air into the first flue gas condenser, hot-air is transported to cigarette wind blending flue,
And blended with the flue gas from demister, it finally blends flue gas and is discharged by chimney.
In the utility model heat exchange will be able to carry out with flue gas in the first flue gas condenser and the second flue gas condenser
Air is defined as cold air, will be from exporting in the first flue gas condenser and blend in flue gas blending flue with flue gas
Air is defined as hot-air.
The utility model carries out three-level wet down to flue gas using air and finally thoroughly eliminates white plume, wherein the first order
Wet down is the first flue gas condenser of desulfurizing tower entrance, and the flue gas after cooling enters desulfurizing tower, greatly reduces desulfurization
The evaporated water of tower reduces wet saturated flue gas gas phase water content from source.Second level wet down is the second level cigarette of desulfurizing tower outlet
Gas condenser further decreases saturated flue gas gas phase water by exporting wet saturated flue gas cooling and condensation water to desulfurizing tower
Content.Third level wet down is the blending that cigarette wind blends hot-air and the condensed wet saturated flue gas that cools down in flue, is increasing cigarette
The relative humidity of blending flue gas is reduced while temperature is spent, so that final thoroughly eliminate white plume.The utility model, which has, to be thrown
Provide the advantage that at low cost, operating cost is low, white plume eradicating efficacy is good.
Preferably, in some embodiments, the flue gas is delivered to described first again after electric precipitator dedusting
The first time heat exchange is carried out in flue gas condenser.
Preferably, in some embodiments, the flue gas is delivered to first flue gas condensing by air-introduced machine
Device.
Preferably, in some embodiments, before the first time heat exchange, the temperature of cold air is 30-70 DEG C,
The temperature of flue gas is 100-160 DEG C；After the first time heat exchange, the temperature of hot-air is 70-130 DEG C, and the temperature of flue gas is
90-120℃.Before second of heat exchange, the temperature of cold air is -10-30 DEG C, and the temperature of flue gas is 40-70 DEG C；Described
After secondary heat exchange, the temperature of cold air is 30-70 DEG C, and the temperature of flue gas is 30-60 DEG C.
In some embodiments, the utility model is by adjusting flue gas described in the blast velocity control of blower and air-introduced machine
With the temperature after air heat exchange.
Embodiment
The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model
Among the embodiment described range.
Embodiment 1
Using flue gas eliminating white smoke system as shown in Figure 1, in the first flue gas condenser 3, air exchanges heat with flue gas,
Wherein, flue gas is reduced to 111 DEG C from 140 DEG C of inlet temperature, and air is increased to 92 DEG C of outlet, waste heat recycling by 30 DEG C of entrance wind-warm syndrome
4925kW, humidity of flue gas are reduced to 12.58% by 14.06%, and 4 evaporated water of desulfurizing tower can reduce about 6.4t/h.Flue gas warp
After the processing of desulfurizing tower 4, flue gas is reduced to 50.75 DEG C by 53 DEG C, and exhaust gas volumn is by 471091Nm3/ h is reduced to 463139Nm3/h。
In the second flue gas condenser 6, using cold air as cold source, by 4 exiting flue gas of desulfurizing tower by 50.75 DEG C of coolings
To 49.25 DEG C, temperature reduces by 1.5 DEG C, flue gas condensing water 3.86t/h, flue gas condensing thermal discharge 2904kW, exhaust gas volumn after condensation
458342Nm3/h.Wherein, -5 DEG C of cool air inlet temperature, 30 DEG C of outlet temperature, cooling air volume 230000Nm3/h。
For flue gas reheat, the hot-air of the first flue gas condenser 3 output is directly mixed in cigarette wind blending flue 8 with flue gas
Mixed, cigarette air temperature reaches 64.5 DEG C after blending, and humidity of flue gas is reduced to 7.60%, without smoke evacuation phenomenon at smoke evacuation.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (5)
1. a kind of flue gas eliminating white smoke system, which is characterized in that including the first flue gas condenser, the desulfurizing tower, second set gradually
Flue gas condenser, blower, demister, cigarette wind blending flue and chimney；
Wherein, the entrance of the exhanst gas outlet of the first flue gas condenser and desulfurizing tower connects, and the outlet of desulfurizing tower and the second flue gas are cold
The smoke inlet of condenser connects, and the exhanst gas outlet of the second flue gas condenser and the entrance of demister connect, the outlet of demister with
Cigarette wind blends the smoke inlet connection of flue, and the outlet of cigarette wind blending flue is connect with chimney；
Wherein, the outlet of blower is connect with the air intake of the second flue gas condenser, the air outlet slit of the second flue gas condenser with
The air intake of first flue gas condenser connects, the air intake of air outlet slit and cigarette wind the blending flue of the first flue gas condenser
The outlet of connection, cigarette wind blending flue is connect with chimney.
2. flue gas eliminating white smoke system according to claim 1, which is characterized in that the flue gas eliminating white smoke system further includes electricity
Deduster, wherein the outlet of electric precipitator is connect with the smoke inlet of first flue gas condenser.
3. flue gas eliminating white smoke system according to claim 2, which is characterized in that the flue gas eliminating white smoke system further includes drawing
Blower, wherein the outlet of the electric precipitator and the entrance of air-introduced machine connect, the outlet of air-introduced machine and first flue gas condensing
The smoke inlet of device connects.
4. flue gas eliminating white smoke system according to claim 2, which is characterized in that the flue gas eliminating white smoke system further includes drawing
Blower, wherein the exhanst gas outlet of first flue gas condenser and the entrance of air-introduced machine connect, and the outlet of air-introduced machine takes off with described
The entrance of sulphur tower connects.
5. flue gas eliminating white smoke system according to claim 1-4, which is characterized in that first flue gas condenser
It is dividing wall type heat exchanger with the second flue gas condenser.
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| CN201820881459.0U CN208482211U (en) | 2018-06-07 | 2018-06-07 | A kind of flue gas eliminating white smoke system |
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| CN201820881459.0U CN208482211U (en) | 2018-06-07 | 2018-06-07 | A kind of flue gas eliminating white smoke system |
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