CN107344052A - Gas cleaning and plume control method and device - Google Patents
Gas cleaning and plume control method and device Download PDFInfo
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- CN107344052A CN107344052A CN201710697178.XA CN201710697178A CN107344052A CN 107344052 A CN107344052 A CN 107344052A CN 201710697178 A CN201710697178 A CN 201710697178A CN 107344052 A CN107344052 A CN 107344052A
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- flue gas
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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Abstract
The present invention provides a set of gas cleaning and plume control method and device, carries out deep purifying to flue gas, and realize the improvement to white plume.The device, including the heterogeneous coring reunion reaction system being sequentially arranged along flue gas flow direction, flue gas advanced purification system and flue gas temperature reaction system, and heat pump circulating system, heat pump circulating system connects heterogeneous coring reunion reaction system and flue gas temperature reaction system by pipeline, flue gas purifies through heterogeneous coring reunion reaction system, fine particle is further removed into flue gas advanced purification system, flue gas discharges after being heated up by flue gas temperature reaction system after deep purifying is handled, the flue gas heat and the cooling medium of heat pump that heterogeneous coring reunion reaction system absorbs are exchanged heat, medium is heated after heating to heat up for flue gas temperature reaction system flue gas.
Description
Technical field
The present invention relates to a kind of gas cleaning based on coring reunion and heat pump heating and plume control method and device, category
In field of environment protection.
Background technology
In recent years, winter gray haze problem was very prominent, in air in gray haze, directly discharge and the actual source of secondary conversion
Head, with coal fire discharged relation.In the preventing and treating of source, fire in addition to controlling the direct pollutant of coal, also to take into account denitration sweetening process band
The secondary pollution come.For composition, in gray haze in addition to organic pollution (OM), predominantly nitrate and sulfate etc. can
Soluble, for source, in the forming process of gray haze, it is larger that secondary conversion occupies share, to PM2.5 and Organic aerosol
Grain thing contribution respectively may be about 30-77% and 44-71%.
Saturation wet flue gas enters atmospheric environment to the cold after wet desulfurizing process, and Water vapor condensation is into fine droplet.White cigarette
Plumage influences environmental perception, and what some common people were even mistakenly considered discharge is toxic harmful exhaust gas, triggers panic and complains.Thus
Coal power generation boiler, which should adopt an effective measure, to be eliminated gypsum rain, has（In vain）Color plume phenomenon.
In coal fired thermal power plant minimum discharge implementation process, depth water saving and wastewater zero discharge, such as one 60 should be taken into account
Ten thousand kilowatts of coal group of motors, using wet desulfurizing process, it is about per hour 80-100 tons to take away desulfurization evaporated water per hour, by cigarette
The vapour quantity that chimney is drained is more than 200 tons.
For current existing minimum discharge technology path, be mostly gradually develop in the groping of engineering practice it is perfect,
Although the cooperation-removal that can coagulate pollutant causes concern, the mechanism of cooperation-removal is not still apparent.Meanwhile dedusting demisting technology
Face simplification（Or integration）Technique, reduce many challenges such as unit fume treatment energy consumption.
The content of the invention
It is an object of the invention to provide a set of device that deep purifying is carried out to flue gas, and deep purifying is carried out to flue gas,
And realize the improvement to white plume.
Another object of the present invention is to provide a kind of gas cleaning and plume control method.
The concrete technical scheme of the present invention is as follows：
Gas cleaning and plume control device, including the heterogeneous coring reunion reaction system being sequentially arranged along flue gas flow direction, cigarette
Gas advanced purification system and flue gas temperature reaction system, and heat pump circulating system, heat pump circulating system are connected non-by pipeline
Homogeneous coring reunion reaction system and flue gas temperature reaction system, flue gas purify through heterogeneous coring reunion reaction system, enter
Flue gas advanced purification system further removes fine particle, and flue gas is by flue gas temperature reaction system liter after deep purifying is handled
Discharged after temperature, the flue gas heat and the cooling medium of heat pump that heterogeneous coring reunion reaction system absorbs are exchanged heat, and are risen
The thermal medium of heat pump system heats up for flue gas temperature reaction system flue gas after temperature.
The further design of the present invention is：
Heterogeneous coring reunion reaction system mainly includes：Become medium entrance warehouse, coalescence media flow is restrained, the solidifying medium that becomes goes out
Mouth warehouse and its support frame.
Non- coring reunion reaction system cooling medium uses air or water, and coolant temperature can be by heat pump control
System;Non- coring reunion reaction system Bundle material is made of stainless steel or fluorine material.
Flue gas advanced purification system is mainly made up of cathod system, anode system, power-supply system and automatic sprinkler fire-extinguishing system.
Automatic sprinkler fire-extinguishing system is mainly made up of nozzle, regulating valve, delivery pump, liquid collecting storage tank, is divided into the first and second sprays
System, first layer spray system are arranged on above flue gas advanced purification system, and it is net that first layer spray system is arranged on flue gas depth
Below change system, first layer spray system direction is consistent with flow of flue gas direction, second layer spray system direction and flue gas direction
On the contrary, ensure advanced purification system negative electrode and anode all standing.
Heat pump is mainly that non-coring reunion reaction system and flue gas temperature reaction system provide cooling medium and added
Thermal medium, mainly by condensation exchanger, expansion valve, evaporation exchanger, compressor and centrifugal pump group into.
Flue gas temperature reaction system is mainly exported by hot primary cooling water, hot primary cooling water main pipe, a hot water inlet,
Jellyfish pipe composition of heat.
System system is also configured with power-supply system, and power-supply system uses high frequency electric source or the pulse power.
Gas cleaning and plume control method are carried out using said apparatus, this method comprises the following steps：
Flue gas purifies through heterogeneous coring reunion reaction system first；
Enter back into flue gas advanced purification system and further remove fine particle；
Then flue gas discharges after being heated up by flue gas temperature reaction system；
Wherein, the flue gas heat and the cooling medium of heat pump that heterogeneous coring reunion reaction system absorbs are exchanged heat, and are risen
Medium is heated after temperature to heat up for flue gas temperature reaction system flue gas.
Wherein, heterogeneous coring reunion reaction system than coring area control in 5 ~ 7 m2/(m3.s) scope.
For the present invention compared with other technologies, main advantage is as follows：
（1）The present invention solves problem of traditional cleaner to the low removal efficiency of fine particle well, realizes low temperature and high relative humidity
The efficient cooperation-removal of the precursor such as PM2.5 and SO3, soluble-salt in flue gas environment；
（2）The present invention is coupled by heterogeneous coring reaction, flue gas temperature reaction with heat pump, heterogeneous coring course of reaction
Middle recovery heat passes through heat pump, and exhaust gas temperature heating can be achieved, realize saving water resource significantly, significantly improve white
Plume problem so that power-plant flue gas discharge meets increasingly strict discharge standard.
Brief description of the drawings
The gas cleaning of Fig. 1 embodiments one and the structural representation of plume control device.
Fig. 2 is the structural representation of the heterogeneous coring reunion reactor of embodiment one.
Fig. 3 is the structural representation of the flue gas temperature reaction device of embodiment one.
Fig. 4 is the structural representation of the heat pump of embodiment one.
In figure：1- dust-laden high-humidity gas fumes, the heterogeneous coring reunion reactors of 2-, 3- first layer spray systems, 4- depth are net
Change system, 5- second layer spray systems, 6- collecting tanks, 7- waste water, 8- flushing waters, 9- flue gas temperature reaction devices, 10- neat stress,
A 11- water of heat, the hot primary cooling waters of 12-, the cold hot water of 13-, the cold water of 14-, 15-1 is solidifying to become media outlet warehouse,
15-2 is solidifying to become medium entrance warehouse, and 16- is solidifying to become tube bank, and 17- supporting plates, 18- support frames, 19- is solidifying to become medium entrance, and 20- coagulates
Become media outlet, the heterogeneous coring reunion neat stress of 21-, flue gas after 22- deep purifyings, 23- regulating valves, 24- heat once cools down
Water out, the hot primary cooling water main pipes of 25-, a 26- water inlet of heat, a 27- jellyfish pipe of heat, 28- condensation exchangers, 29-
Expansion valve, 30- evaporation exchangers, 31- compressors, 32-1,32-2 centrifugal pump, 32- heat pumps, 33- wastewater collection systems
Embodiment：
It is existing during existing fine particle control technology how to realize after desulfurization in low temperature and high relative humidity complexity flue gas environment
The efficient cooperation-removal of the precursors such as PM2.5 and SO3, soluble-salt, how coring reunion reactor is entered row constraint and design,
White plume is administered, the problems such as water saving in flue dust minimum discharge control technology, the present invention propose based on coring reunite with
The gas cleaning of heat pump heating and plume control device.
The present invention applies particle swarm equilibrium kinetics theoretical method, and research nonhomogen-ous nucleation is developed with solidifying change aggregation procedure and advised
Rule, discloses the precursor deep purifying mechanism such as fine particle, soluble-salt, constructs based on the solidifying change dehumidifying than coring area
Composite design method.
The non-coring reunion reaction system operation principle of the present invention：Low temperature and high relative humidity flue gas after wet desulphurization enters non-equal core
Change reunion reaction system, occur to condense and coalescence is reacted, it is substantially to improve submicron order by physically or chemically acting on
The process that grain is reunited.Greater particle size particle is adhered to by wall moisture film due to self inertia and the interception function of tube bank and removed, together
When tube bank cooling working medium force the vapor in saturated flue gas to undergo phase transition, or be directly condensed into mist droplet, add part
Droplet concentration in region and enhance intergranular collision probability, promote fine particle to grow up and remove；Or with fine grained
Thing is that nucleus of condensation generation surface condenses and wet granulate, improves the adhesion between subparticle with growing up.In inertia, interception, cloth
Under the effects such as bright diffusion, thermophoresis and diffusiophoresis, promote the mutual making contact of subparticle and constantly grow up, the particulate matter after reunion
Part is removed with gas shock in condensation tube bank, partly enters flue gas depth through non-coring reunion reaction system outlet
Cleaning system and be removed.
By Coupled Heat Transfer and the iteration optimization of phase transformation, heterogeneous coring reunion reactor can realize optimal temperature drop 4 ~ 5
DEG C, most preferably than 5 ~ 7m of coring area2/(m3The core parameter such as .s).It is the key for designing heterogeneous reunion reactor than coring area
Parameter, refer to 1 m3The area of coring unit required for/s flue gases
Embodiment one：
As Figure 1-Figure 4, gas cleaning of the invention and plume control device are non-equal including being sequentially arranged along flue gas flow direction
Phase coring reunion reaction system, flue gas advanced purification system and flue gas temperature reaction system, and heat pump circulating system.Wherein,
Heterogeneous coring reunion reaction system is arranged at device portal, and flue gas advanced purification system is arranged on the vertical section of device, gas
Temperature reaction system is arranged on the horizontal segment of device.
Heat pump circulating system connects heterogeneous coring reunion reaction system and flue gas temperature reaction system, flue gas by pipeline
Purified through heterogeneous coring reunion reaction system, fine particle is further removed into flue gas advanced purification system, by depth
Flue gas discharges after being heated up by flue gas temperature reaction system after purified treatment, and heterogeneous coring reunion reaction system absorbs flue gas heat
Exchanged heat with the cooling medium of heat pump, medium is heated after heating and is heated up for flue gas temperature reaction system flue gas, significantly
Improve white cigarette phenomenon.
Complicated low temperature and high relative humidity original flue gas 1 passes through heterogeneous coring reunion reactor 2 after desulfurization, is carried with heat pump
The cooling medium of confession is exchanged heat, and coring occurs in heterogeneous coring reunion reactor 2 for fine particle, drop in flue gas etc.
Enter wastewater collection system after reunion, flue gas carries out charged trapping into advanced purification system 4, and the fine particle in flue gas is high
Effect removing, after the flue gas after the processing of advanced purification system 4 is heated up by flue gas temperature reaction device 9, neat stress 10 is by cigarette
Chimney discharges.First layer spray system 3 and second layer spray system 5 are rushed to the bottom and top of advanced purification system 4 respectively
Wash.
In heterogeneous coring reunion reactor 2, the coalescence media flow direction that former flue gas 1 provides with heat pump 29 is hung down
Directly, cross-flow is formed.The coalescence medium 14 that heat pump 29 provides becomes medium entrance storage through being coagulated in heterogeneous coring reunion reactor 2
After storehouse 15-2 convergences, through the flowing of tube bank 16, into solidifying change media outlet warehouse 15-1, heat pump is returned to by the solidifying media outlet 20 that becomes
System 29.
The temperature raising medium that heat pump 29 provides is by a hot water inlet 26, into flue gas temperature reaction device 9, through heat once
Coolant outlet 24 returns to heat pump, and flue gas is exchanged heat with temperature raising medium in flue gas temperature reaction device 9.Flue gas is through flue gas
Temperature reaction system can typically heat up 5-8 DEG C.
When needing to provide coalescence medium, the compressor 31 in heat pump 29 does work to refrigerant, it is carried out vapour-liquid and turns
The circulation of change.Entrained heat absorption will be circulated into refrigerant by evaporation exchanger 30, led to again while refrigerant circulation
The condensation of the condensation refrigerant of exchanger 28 is crossed, is circulated the heat absorption entrained by refrigerant, finally loop jump by water by water
To underground water or soil.It is heterogeneous coring group by evaporation exchanger 30 during heat is constantly transferred to underground
Poly- reactor 2 provides low temperature coalescence medium.
When needing to heat up to flue gas, heat pump compressor 31 does work to refrigerant.Absorb ground by the waterway circulating of underground
Heat in lower water or soil, by the evaporation of the refrigerant of evaporation exchanger 30, by the heat absorption in waterway circulating into refrigerant,
Again by condensing the condensation of the refrigerant of exchanger 28 while refrigerant circulation, the heat as entrained by air circulation by refrigerant is inhaled
Receive.It is the heat supply of flue gas temperature reaction device 9 during the heat of underground is constantly transferred to external environment condition by heat pump.
Application example one：
Certain power plant #1 units（630MW）Minimum discharge modification scheme, increase two-grade desulfurizing tower, remove GGH systems, to meet to discharge
It is up to standard and effectively avoid and issuable " gypsum rain " phenomenon, coring is set up after the two-grade desulfurizing tower that #1 units increase newly and is reunited
With gas cleaning and the plume control device of heat pump heating, flue gas temperature reaction system is set to lead to before chimney.
Heterogeneous coring reunion reactor is using the tube bank arrangement of 8 mm calibers, 0.7mm wall thickness, spacing 30 in device
Mm, unit temperature drop are about 5.59 m than coring area2/(m3.s), testing result is shown：Under operating mode at full capacity, wet electrostatic removes
Dirt device outlet gas and dust characters are 1.74 mg/m3（Standard state, butt, 6%02）, PM2.5 removal efficiencies are 77.4%；S03 takes off
Except efficiency is 76.0%, drop removal efficiency is 75.2%；Deduster total system pressure is reduced to 846.4 Pa, 55 DEG C of exhaust gas temperature,
Significantly improve white cigarette phenomenon.The discharge capacity for discharging soluble salts material in flue gas declines substantially, and slippage 71.58%, phase transformation is opened
The electrical conductivity for opening front and rear condensation water declines 79.21%.
Claims (10)
1. gas cleaning and plume control device, including the heterogeneous coring reunion reaction system being sequentially arranged along flue gas flow direction,
Flue gas advanced purification system and flue gas temperature reaction system, and heat pump circulating system, heat pump circulating system are connected by pipeline
Heterogeneous coring reunion reaction system and flue gas temperature reaction system, flue gas are purified through heterogeneous coring reunion reaction system, entered
Enter flue gas advanced purification system and further remove fine particle, flue gas is by flue gas temperature reaction system after deep purifying is handled
To be discharged after heating, the flue gas heat and the cooling medium of heat pump that heterogeneous coring reunion reaction system absorbs are exchanged heat,
Medium is heated after heating to heat up for flue gas temperature reaction system flue gas.
2. gas cleaning and plume control device according to claim 1, it is characterized in that：Heterogeneous coring reunion reaction system
Mainly include：Become medium entrance warehouse, the tube bank of coalescence media flow, solidifying change media outlet warehouse and its support frame.
3. gas cleaning and plume control device according to claim 2, it is characterized in that：Non- coring reunion reaction system is cold
But medium uses air or water, and coolant temperature can be controlled by heat pump;Non- coring reunion reaction system Bundle material
It is made of stainless steel or fluorine material.
4. according to any gas cleanings of claim 1-3 and plume control device, it is characterized in that：Flue gas advanced purification system
Mainly it is made up of cathod system, anode system, power-supply system and automatic sprinkler fire-extinguishing system.
5. gas cleaning and plume control device according to claim 4, it is characterized in that：Automatic sprinkler fire-extinguishing system is mainly by spraying
Mouth, regulating valve, delivery pump, liquid collecting storage tank composition, are divided into the first and second spray systems, first layer spray system is arranged on flue gas
Above advanced purification system, first layer spray system is arranged on below flue gas advanced purification system, first layer spray system direction
Consistent with flow of flue gas direction, second layer spray system direction and flue gas are in opposite direction, ensure advanced purification system negative electrode and sun
Pole all standing.
6. gas cleaning and plume control device according to claim 5, it is characterized in that：Heat pump is mainly non-equal coring
Reunion reaction system and flue gas temperature reaction system provide cooling medium and heating medium, mainly by condensation exchanger, expansion valve,
Evaporation exchanger, compressor and centrifugal pump group into.
7. gas cleaning and plume control device according to claim 5, it is characterized in that：Flue gas temperature reaction system mainly by
Hot primary cooling water outlet, hot primary cooling water main pipe, a hot water inlet, jellyfish pipe composition of heat.
8. gas cleaning and plume control device according to claim 1, it is characterized in that：System system is also configured with power supply system
System, power-supply system use high frequency electric source or the pulse power.
9. carrying out gas cleaning and plume control method using any described devices of right 1-8, this method comprises the following steps：
Flue gas purifies through heterogeneous coring reunion reaction system first；
Enter back into flue gas advanced purification system and further remove fine particle；
Then flue gas discharges after being heated up by flue gas temperature reaction system；
Wherein, the flue gas heat and the cooling medium of heat pump that heterogeneous coring reunion reaction system absorbs are exchanged heat, and are risen
Medium is heated after temperature to heat up for flue gas temperature reaction system flue gas.
10. gas cleaning and plume control method according to claim 9, wherein, heterogeneous coring reunion reaction system
Than coring area control in 5.5 ~ 6.5m2/(m3.s) scope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710697178.XA CN107344052A (en) | 2017-08-15 | 2017-08-15 | Gas cleaning and plume control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710697178.XA CN107344052A (en) | 2017-08-15 | 2017-08-15 | Gas cleaning and plume control method and device |
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| CN201710697178.XA Pending CN107344052A (en) | 2017-08-15 | 2017-08-15 | Gas cleaning and plume control method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930309A (en) * | 2017-12-29 | 2018-04-20 | 福建龙净环保股份有限公司 | A kind of wet plume eliminates system |
| CN109240240A (en) * | 2018-10-18 | 2019-01-18 | 南京工业大学 | Method for determining white smoke plume control line of flue gas after wet desulphurization |
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| CN105944495A (en) * | 2016-07-15 | 2016-09-21 | 国电环境保护研究院 | Coal-fired flue gas deep purification smoke plume removing system |
| CN205867920U (en) * | 2016-08-03 | 2017-01-11 | 国电科学技术研究院 | Novel coal fired power plant plume treatment system |
| CN207153371U (en) * | 2017-08-15 | 2018-03-30 | 国电科学技术研究院 | Gas cleaning and plume control device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104235864A (en) * | 2013-06-13 | 2014-12-24 | 烟台龙源电力技术股份有限公司 | Flue gas moisture recovery system and method |
| CN105944495A (en) * | 2016-07-15 | 2016-09-21 | 国电环境保护研究院 | Coal-fired flue gas deep purification smoke plume removing system |
| CN205867920U (en) * | 2016-08-03 | 2017-01-11 | 国电科学技术研究院 | Novel coal fired power plant plume treatment system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930309A (en) * | 2017-12-29 | 2018-04-20 | 福建龙净环保股份有限公司 | A kind of wet plume eliminates system |
| CN107930309B (en) * | 2017-12-29 | 2023-08-15 | 福建龙净环保股份有限公司 | Wet smoke plume eliminating system |
| CN109240240A (en) * | 2018-10-18 | 2019-01-18 | 南京工业大学 | Method for determining white smoke plume control line of flue gas after wet desulphurization |
| CN109240240B (en) * | 2018-10-18 | 2019-05-31 | 南京工业大学 | Method for determining white smoke plume control line of flue gas after wet desulphurization |
| WO2020077679A1 (en) * | 2018-10-18 | 2020-04-23 | 南京工业大学 | Method for determining control line of white smoke plume after wet desulphurization |
| US11520078B2 (en) * | 2018-10-18 | 2022-12-06 | Nanjing Tech University | Method for determining white plume control line of smoke after wet desulphurization |
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