CN203771436U - Smoke efficient purification device for coal-fired power plant - Google Patents
Smoke efficient purification device for coal-fired power plant Download PDFInfo
- Publication number
- CN203771436U CN203771436U CN201420165844.7U CN201420165844U CN203771436U CN 203771436 U CN203771436 U CN 203771436U CN 201420165844 U CN201420165844 U CN 201420165844U CN 203771436 U CN203771436 U CN 203771436U
- Authority
- CN
- China
- Prior art keywords
- coal
- blade
- cylindrical shell
- demister
- flue gas
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides a smoke efficient purification device for a coal-fired power plant. The smoke efficient purification device for the coal-fired power plant is arranged between a boiler and a chimney of the coal-fired power plant and used for purifying smoke exhausted from the coal-fired power plant. The smoke efficient purification device comprises an economizer, an air preheater, an electrostatic precipitator, a denitration reactor, a desulfurizing tower, a chemical washing device and/or a demister. The boiler, the economizer, the denitration reactor, the air preheater, the electrostatic precipitator, the desulfurizing tower and the chimney are sequentially communicated. The chemical washing device and/or the demister are arranged between the desulfurizing tower and the chimney. When smoke generated by the coal-fired power plant flows through the chemical washing device, the smoke is mixed with chemical reagents in the chemical washing device, a reaction occurs and then the smoke is washed. The smoke efficient purification device for the coal-fired power plant is reasonable in design, special treatment is conducted on sulfuric acid rain, gypsum rain and the like formed by SOx, NOx, particles and acid drops in smoke exhausted from the coal-fired power plant, and the problem of corrosion of the chimney of the coal-fired power plant is solved.
Description
Technical field
The utility model relates to waste gas purification technical field, relates in particular to a kind of coal-fired plant flue gas high-level cleaner.
Background technology
Along with becoming increasingly conspicuous of China's problem of environmental pollution, especially haze weather is to people's life and healthy day by day serious impact, the further discharge of reduction pollutant, the raising discharge standard brought.Therefore, following coal-fired power plant must reach the discharge standard of fuel gas generation.
The flue gas that coal-fired power plant produces can be after treatment discharged to atmosphere, but prior art falls behind, the NO in the flue gas that coal-burning power plant can't be produced
x, SO
x, the sulfuric acid rain that forms of particle, acid drop and gypsum rain etc. remove completely, make the chimney seriously corroded of coal-burning power plant, and cannot reach the standard of relevant regulations, make atmosphere pollution more and more serious.
Utility model content
The purpose of this utility model is to provide a kind of coal-fired plant flue gas high-level cleaner, by chemical washing device and/or demister are set between desulfurizing tower and chimney, the sulfuric acid rain that NOx, SOx in the flue gas that coal-burning power plant is produced, particle, acid drop form and gypsum rain etc. further remove, and make the exhaust of coal-burning power plant reach the standard of relevant regulations.
The utility model is achieved through the following technical solutions:
A kind of coal-fired plant flue gas high-level cleaner, be arranged between the boiler and chimney of coal-burning power plant, the flue gas producing for purifying coal-burning power plant, comprises economizer, air preheater and electrostatic precipitator, also comprises Benitration reactor, desulfurizing tower, chemical washing device and/or demister;
Described boiler, economizer, Benitration reactor, air preheater, electrostatic precipitator, desulfurizing tower and chimney are communicated with successively, and described chemical washing device and/or demister are arranged between described desulfurizing tower and described chimney; The smoke gas flow producing when coal-burning power plant is during through described chemical washing device, with chemical reagent hybrid reaction in described chemical washing device and be washed.
In order to increase the time of contact of chemical reagent and flue gas, above-mentioned chemical washing device and/or demister are arranged in described desulfurizing tower or in described chimney.
As a kind of embodiment wherein, described chemical washing device and/or described demister are arranged on the top of described desulfurizing tower.
As a kind of embodiment wherein, described chemical washing device is arranged between described desulfurizing tower and described chimney, and described demister is arranged between described chemical washing device and described chimney; Or described chemical washing device and described demister as a whole installation between described desulfurizing tower and described chimney.
As a kind of embodiment wherein, described demister comprises housing, guide vane and Whirlwind cyclone;
Described housing is around the cavity that forms sealing, and its top is provided with gas outlet, and sidewall is provided with air intake;
Described guide vane is fixed on described Whirlwind cyclone, described Whirlwind cyclone is fixed on described housing, described Whirlwind cyclone is tubular structure, described Whirlwind cyclone is communicated with the gas outlet of described housing, the described guide vane formation helical duct that matches with described Whirlwind cyclone and described housing, the air inlet of described helical duct is communicated with described housing air intake.
As a kind of embodiment wherein, described demister also comprises reverse taper, and described reverse taper is fixed on described housing, the formation fluid reservoir that matches with the bottom of described housing, the liquid forming for storing the droplet of flue gas.
As a kind of embodiment wherein, described demister comprises cylindrical shell and import separator;
Described cylindrical shell is around the cavity that forms sealing, and the sidewall of described cylindrical shell is provided with air admission hole, and the top of described cylindrical shell is provided with venthole;
Described import separator is fixed in described cylindrical shell, comprise upper cover plate, lower cover and waveform blade in parallel, described waveform blade in parallel is arranged between described upper cover plate and described lower cover, match with described upper cover plate and lower cover and form undulating path in parallel, the air inlet of described undulating path in parallel is communicated with the air admission hole of described cylindrical shell, and the gas outlet of described undulating path in parallel is communicated with the venthole of described cylindrical shell.
As a kind of embodiment wherein, described demister also comprises discharge knockout drum and return duct;
Described discharge knockout drum is fixed in described cylindrical shell, comprise blade-type separator in parallel, the air inlet of described blade-type separator in parallel is communicated with the gas outlet of described undulating path, the liquid outlet of described blade-type separator in parallel is communicated with described return duct, and the gas outlet of described blade-type separator in parallel is communicated with the venthole of described cylindrical shell;
Described return duct one end is communicated with the liquid outlet of described blade-type separator, and the other end stretches to the bottom of described cylindrical shell, for being imported the bottom of described cylindrical shell by the isolated droplet of described blade-type separator.
As a kind of embodiment wherein, demister comprises cylindrical shell, discharge knockout drum and return duct;
Cylindrical shell is around the cavity that forms sealing, and the sidewall of cylindrical shell is provided with air admission hole, and the top of cylindrical shell is provided with venthole;
Discharge knockout drum is fixed in cylindrical shell, comprise blade-type separator in parallel, the air inlet of blade-type separator in parallel is communicated with the air admission hole of cylindrical shell, and the gas outlet of blade-type separator in parallel is communicated with the venthole of cylindrical shell, and the liquid outlet of blade-type separator in parallel is communicated with return duct;
Return duct one end is communicated with the liquid outlet of blade-type separator, and the other end stretches to the bottom of cylindrical shell, for being imported the bottom of cylindrical shell by the isolated droplet of blade-type separator.
As a kind of embodiment wherein, also comprise heat exchanger, described heat exchanger is arranged between described desulfurizing tower and described demister or described chemical washing device, for reclaiming heat.
As a kind of embodiment wherein, described demister adopts multiclone, the demand according to device to space, and multiclone is arranged vertically or is horizontally disposed.
As a kind of embodiment wherein, described demister adopts through type multi-pipe blade separator;
Described through type multi-pipe blade separator comprises public inlet plenum, through type blade, public discharge chamber and public leakage fluid dram, described public inlet plenum is communicated with the air inlet of described through type blade, the exhaust outlet of described through type blade is communicated with described public discharge chamber, and described public leakage fluid dram connects the leakage fluid dram in described through type blade downstream.Described through type multi-pipe blade separator can be arranged vertically as required or be horizontally disposed.
Compared with prior art, coal-fired plant flue gas high-level cleaner of the present utility model is reasonable in design, cannot be by the SO discharging in flue gas for coal-burning power plant's conventional treatment method
x, NO
xthe problem removing is completely set up chemical washing device and/or demister in the utility model device, and wherein chemical washing device carries out conventional denitration, the rear remaining SO of desulfurization processing to flue gas
x, NO
xand part dust removes; demister can be removed acid droplet, gypsum rain, sulfuric acid rain and the residue dust in flue gas; the probability that coal-burning power plant's chimney is corroded reduces greatly; NOx, the SOx that emission of smoke tallies national environmental protection portion requires and the discharge standard of particle, be conducive to the protection of atmospheric environment.
In order to increase chemical reagent and SO
x, NO
xreaction time, chemical washing device and/or demister can be arranged on the inside of desulfurizing tower, further, can be arranged on the top in desulfurizing tower, make chemical reagent and SO
x, NO
xthe neutralization reaction time lengthen, more pollutant is divested under the effect of chemical washing device and/or demister, makes the discharge flue gas of coal-burning power plant reach the fuel gas generation discharge standard that is even better than national regulation.
Accompanying drawing explanation
Fig. 1 is the structural representation of coal-fired plant flue gas high-level cleaner the first embodiment of the present utility model;
Fig. 2 is the structural representation of coal-fired plant flue gas high-level cleaner the second embodiment of the present utility model;
Fig. 3 is a kind of set-up mode schematic diagram of demister;
Fig. 4 is a kind of set-up mode schematic diagram of chemical washing device and demister;
Fig. 5 is the structural representation of a kind of embodiment of demister;
Fig. 6 is the structural representation of another embodiment of demister;
Fig. 7 is the structural representation of a kind of embodiment of import separator;
Fig. 8 is the structural representation of a kind of embodiment of discharge knockout drum;
Fig. 9 is the part-structure schematic diagram of coal-fired plant flue gas high-level cleaner the 3rd embodiment of the present utility model;
Figure 10 is the part-structure schematic diagram of the utility model coal-fired plant flue gas high-level cleaner the 4th embodiment;
Figure 11 is wherein a kind of set-up mode schematic diagram of chemical washing device;
Figure 12 sprays into the schematic diagram of the first embodiment of mode for erectting the interior chemical reagent of the flue of arranging;
Figure 13 sprays into the schematic diagram of the second embodiment of mode for erectting the interior chemical reagent of the flue of arranging;
Figure 14 is the another kind of set-up mode schematic diagram of demister;
Figure 15 is the demister mode schematic diagram that is connected in parallel;
In the flue that Figure 16 is arranged horizontally, chemical reagent sprays into the schematic diagram of the first embodiment of mode;
In the flue that Figure 17 is arranged horizontally, chemical reagent sprays into the schematic diagram of the second embodiment of mode;
In the flue that Figure 18 is arranged horizontally, chemical reagent sprays into the schematic diagram of the 3rd embodiment of mode;
Figure 19 is that import separator and the discharge knockout drum of demister is arranged at the structural representation in desulfurizing tower;
Figure 20 for adding the structural representation of chemical reagent instead of chemical washer in the shower water at desulfurizing tower top;
Figure 21 arranges the structural representation of the above chemical washing device of one deck after shower water in desulfurizing tower;
Figure 22 sprays into the schematic diagram of the 3rd embodiment of mode for erectting the interior chemical reagent of the flue of arranging;
Figure 23 is that demister is the structural representation of the embodiment of multiclone one;
Figure 24 is that demister is the structural representation of the embodiment of multiclone two;
Figure 25 is that demister is the structural representation of the embodiment of multiclone three;
Figure 26 is that demister is the structural representation of the embodiment of multiclone four;
Figure 27 is that demister is the structural representation of the embodiment of multiclone five;
Figure 28 is that demister is connected in series mode schematic diagram;
Figure 29 is that demister is the structural representation of the embodiment of through type multi-pipe blade separator;
Figure 30 is the enlarged drawing of through type blade in Figure 29.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, by the following examples, and by reference to the accompanying drawings, coal-fired plant flue gas high-level cleaner of the present utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
At present, the flue gas that coal-burning power plant discharges is because of technical reason, NO
x, SO
xcannot from flue gas, depart to the discharge standard that meets relevant regulations, cause a large amount of noxious gas emissions in the middle of atmosphere, air is polluted.As Figure 1-3, a kind of coal-fired plant flue gas high-level cleaner, is arranged between the boiler 100 and chimney 1000 of coal-burning power plant, and the flue gas producing for purifying coal-burning power plant, comprises economizer 200, air preheater 500 and electrostatic precipitator 700;
For coal-burning power plant being produced to the NO in flue gas
x, SO
xthoroughly remove, this device also comprises Benitration reactor 300, desulfurizing tower 900, chemical washing device 400 and/or demister 600.Boiler 100, economizer 200, Benitration reactor 300, air preheater 500, electrostatic precipitator 700, desulfurizing tower 900 and chimney 1000 are communicated with successively, and chemical washing device 400 and/or demister 600 are arranged between desulfurizing tower 900 and chimney 1000; Wherein, Benitration reactor 300 is for removing the NO of flue gas
x; Desulfurizing tower 900 is for removing the SO of flue gas
x.
The smoke gas flow producing when coal-burning power plant is during through chemical washing device 400, with chemical reagent hybrid reaction in chemical washing device 400 and be washed, is mainly the NO in flue gas
x, SO
xwith chemical reagent generation chemical reaction, thereby by NO
x, SO
xfrom flue gas, remove.The smoke gas flow producing when coal-burning power plant is during through demister 600, and demister 600 is removed acid droplet, gypsum rain, sulfuric acid rain and a small amount of residue dust in flue gas, makes the exhaust of coal-burning power plant meet the discharge standard of relevant regulations.
The NO that cannot thoroughly remove at present for coal-burning power plant
x, SO
x, coal-burning power plant of the present utility model high-level cleaner is by setting up chemical washing device 400 and/or demister 600, by the NO in flue gas
x, SO
x, acid droplet, gypsum rain, sulfuric acid rain and remaining dust thoroughly remove, and makes the flue gas of coal-burning power plant's discharge meet the standard of relevant regulations, reduced the discharge capacity of pollutant, thereby alleviated the pollution of flue gas to atmosphere.
As shown in Figure 11, Figure 14 and Figure 19, chemical washing device 400 and/or demister 600 can be arranged in desulfurizing tower 900 or in chimney 1000.Further, in order to increase chemical reagent and NO
x, SO
xreaction time also can be arranged on the top (referring to Figure 11) in desulfurizing tower 900.As shown in Figure 2, as a kind of embodiment wherein, chemical washing device 400 is arranged between desulfurizing tower 900 and chimney 1000, and demister 600 is arranged between chemical washing device 400 and chimney 1000; If there is no chemical washing device, demister 600 is between desulfurizing tower 900 and chimney 1000, as shown in Figure 3.From desulfurizing tower 900 or chemical washing device 400 out and the flue gas that contains acid drop, gypsum particle and dust enter demister 600, droplet particle will be separated and be collected in the bottom of demister 600 under the effect of centrifugal force, by lower pipeline to appointed place discharge or through again recycling after separation.Demister 600 can be arranged demand according to the space of this device, is designed to erect layout or horizontally disposed.As shown in figure 10, chemical washing device 400 and demister 600 also can be used as a whole installation between desulfurizing tower 900 and chimney 1000.
Above-mentioned chemical reagent is ammonium salt solution, ammonia or ammoniacal liquor, and wherein ammonium salt solution can be ammonium sulfite solution or ammonium bicarbonate soln.The concentration of chemical reagent is according to NO in desulfurizing tower flue gas out
x, SO
xcontent configure; Or by increase chemical reagent straying quatity, chemical reagent, spray into path, parallel/serial chemical washing device 400 can improve clean result.The mobile power that provides that blower fan 800 can be set between electrostatic precipitator 700 and desulfurizing tower 900 is flue gas, to promote the efficiency of gas cleaning.
As shown in Figure 5, above-mentioned demister 600 comprises housing 611, guide vane 613 and Whirlwind cyclone 612.Housing 611 is around the cavity that forms sealing, and the top of housing 611 is provided with gas outlet, and sidewall is provided with air intake.Guide vane 613 is fixed on Whirlwind cyclone 612, and Whirlwind cyclone 612 is fixed on housing 611.Wherein, Whirlwind cyclone 612 is tubular structures, can be also conical structure hollow, upper and lower opening, and Whirlwind cyclone 612 and gas outlet communicate; The guide vane 613 formation helical duct that matches with Whirlwind cyclone 612 and housing 611, the air inlet of helical duct is communicated with the air intake of housing 611.
The flue gas that coal-burning power plant produces moves along its spiral helicine path from the air intake of housing 611 enters helical duct, acid drop, gypsum particle and dust under the effect of centrifugal force in flue gas and the inwall of housing 611 bump and then depart from the motion path of flue gas, thereby acid drop, gypsum particle and dust are removed from flue gas, flue gas after demist flows out from helical duct, through the Whirlwind cyclone 612 of tubular, flow to the gas outlet of housing 611, then from the gas outlet of housing 611, flow to downstream unit.
Preferably, demister 600 also comprises reverse taper 614, reverse taper 614 is fixed on housing 611, and the formation fluid reservoir that matches with the bottom of housing 611, the liquid that the droplet being separated forms enters fluid reservoir under the effect of gravity, and reverse taper 614 prevents that liquid from being taken away fluid reservoir by flue gas.
As shown in Figure 6 and Figure 7, as a kind of embodiment wherein, demister 600 comprises cylindrical shell 621 and import separator 624, and cylindrical shell 621 is around the cavity that forms sealing, and the sidewall of cylindrical shell 621 is provided with air admission hole, and the top of cylindrical shell 621 is provided with venthole.Import separator 624 is fixed in cylindrical shell 621, comprises upper cover plate 6242, lower cover 6243 and waveform blade 6241 in parallel.Waveform blade 6241 in parallel is clipped in the middle by upper cover plate 6242 and lower cover 6243, and the formation undulating path in parallel that matches with upper cover plate 6242 and lower cover 6243, the air inlet of undulating path is communicated with the air admission hole of cylindrical shell 621, and the gas outlet of undulating path is communicated with the venthole of cylindrical shell 621.Upper cover plate 6242 and lower cover 6241 can be fan-shaped, can be also quadrangle or the polygons of arbitrary shape.
The flue gas that coal-burning power plant produces enters the air inlet of undulating path from the air admission hole of cylindrical shell 621, along undulating path path flow, in this process, acid drop, gypsum particle and dust and waveform blade 6241 in flue gas bump, after collision, depart from the motion path of flue gas, thereby acid drop, gypsum particle and dust are removed from flue gas, and the flue gas after demist flows out from the gas outlet of undulating path, through the venthole of cylindrical shell 621, flow to downstream unit.
As shown in Figure 6 and Figure 8, preferably, above-mentioned demister 600 also comprises discharge knockout drum 622 and return duct 623, wherein, discharge knockout drum 622 is fixed in cylindrical shell 621, comprise blade-type separator in parallel 6221, the air inlet of blade-type separator 6221 and the gas outlet of undulating path in parallel communicate, and the gas outlet of blade-type separator 6221 and the venthole of cylindrical shell 621 in parallel communicate.The flue gas flowing out from the gas outlet of undulating path enters the air inlet of blade-type separator 6221, under the effect of blade-type separator 6221, acid drop, gypsum particle and dust are further removed, and then flue gas flows to downstream unit from the venthole of cylindrical shell 621 from flow out the gas outlet of blade-type separator 6221.
Return duct 623 one end are communicated with the liquid outlet of blade-type separator 6221, and the other end stretches to the bottom of cylindrical shell 621, and the liquid being formed by the isolated droplet of blade-type separator 6221 flows to the bottom of cylindrical shell 621 through return duct 623.Contain the flue gas of acid drop, gypsum particle and dust under the effect of above-mentioned demister 600, through twice separation, thereby more acid drop, gypsum particle and dust are removed from flue gas.
As shown in Figure 15 and 28, demister 600 can use by separate unit, also can Liang Tai, many series connection or in parallel use, can according to boiler smoke tolerance or exhaust gas dust concentration be enabled or stop using one or many demisters 600 when in parallel, thus reach the object that meets purification efficiency and do not waste energy.Demister 600 also can be arranged on the top of desulfurizing tower 900 or the bottom (referring to Figure 14) of chimney 1000, can realize purification function equally.Can also adopt vane type cyclone separator to replace demister 600, described vane type cyclone separator can be realized the function of demister 600.
As a kind of embodiment wherein, can replace import separator 624 with discharge knockout drum 622, because import separator 624 and discharge knockout drum 622 can remove acid drop, gypsum particle and dust, therefore can use import separator 624 and discharge knockout drum 622 simultaneously, or according to content series connection or a plurality of import separator 624 in parallel and the discharge knockout drum 622 of acid drop, gypsum particle and dust in flue gas, or only use in import separator 624 and discharge knockout drum 622.When above-mentioned demister 600 does not have import separator 624, demister 600 comprises cylindrical shell 621, discharge knockout drum 622 and return duct 623; Cylindrical shell 621 is around the cavity that forms sealing, and the sidewall of cylindrical shell 621 is provided with air admission hole, and the top of cylindrical shell 621 is provided with venthole; Discharge knockout drum 622 is fixed in cylindrical shell 621, comprise blade-type separator in parallel 6221, the air inlet of blade-type separator 6221 in parallel is communicated with the air admission hole of cylindrical shell 621, the gas outlet of blade-type separator 6221 in parallel is communicated with the venthole of cylindrical shell 621, and the liquid outlet of blade-type separator 6221 in parallel is communicated with return duct 623; Return duct 623 one end are communicated with the liquid outlet of blade-type separator 6221, and the other end stretches to the bottom of cylindrical shell 621, for the droplet being gone out by blade-type separator separation 6221 being imported to the bottom of cylindrical shell.
As shown in Figure 23-27, above-mentioned demister 600 can also adopt multiclone 1200.Multiclone 1200 can be arranged vertically or horizontally disposed according to the needs in space.Multiclone 1200 comprises single tube cyclone separator 1230 and the public dust chamber 1240 of public inlet plenum 1210, public discharge chamber 1220, parallel connection, public inlet plenum 1210 is connected with the air inlet of single tube cyclone separator 1230, and the gas outlet of single tube cyclone separator 1230 is connected with dust chamber 1240 and public discharge chamber 1220.First the flue gas coming from upstream enters the public inlet plenum 1210 of multiclone 1200, acid drop, gypsum particle and dust in flue gas enters single tube cyclone separator 1230 through public inlet plenum 1210, after the acid drop of major part in flue gas, gypsum particle and dust are separated, enter public dust chamber 1240, flue gas after demist flows into public discharge chamber 1220, then flows to upstream device.Multiclone 1200 can be external hanging type (referring to Figure 25), also can be built-in (referring to Figure 23), when multiclone 1200 is when being built-in, its shell can be the arbitrary polyhedrons such as cylindrical, square or rectangle, and its outer casing underpart can be cone or multiaspect reverse taper arbitrarily; Monomer cyclone separator 1230 can be that tangential entry cyclone cylinder can be also vane type cyclone cylinder.
As shown in Figure 29,30, demister 600 also can adopt through type multi-pipe blade separator.Through type multi-pipe blade separator comprises public inlet plenum 631, through type blade 632, public discharge chamber 633 and public leakage fluid dram 634, public inlet plenum 631 is communicated with the air inlet of through type blade 632, the exhaust outlet of through type blade 632 is communicated with public discharge chamber 633, and public leakage fluid dram 634 connects the leakage fluid dram in through type blade 632 downstreams.First flue gas enters public inlet plenum 631, then through through type blade 632, enter public discharge chamber, in this process, acid drop in flue gas, gypsum particle and dust rotatablely move under the effect of through type blade 632 in through type blade 632, acid drop, gypsum particle and dust collide the rear flue gas that departs from the wall of through type blade 632 under the effect of centrifugal force, the acid drop that departs from flue gas, gypsum particle and dust fall under gravity into the lower end of public discharge chamber 633, from public leakage fluid dram 634, discharge, by the flue gas of demist, from public discharge chamber 633, flowed to downstream unit.Through type multi-pipe blade separator can be arranged vertically as required or be horizontally disposed.
As shown in figure 19, as a kind of embodiment wherein, the import separator 624 of demister 600 and discharge knockout drum 622 both can be whole, also can be respectively as unit independently, be arranged in desulfurizing tower 900, wherein, import separator 624 can be arranged on the inner air intake of desulfurizing tower 900, and discharge knockout drum 622 can be arranged on the top of desulfurizing tower 900.In addition, the import separator 624 of demister 600 and discharge knockout drum 622 both can be whole, the bottom (referring to Figure 14) that also can partly be arranged at chimney 1000.
As shown in Figure 9, as a kind of embodiment wherein, coal-fired plant flue gas high-level cleaner also comprises heat exchanger 1100, heat exchanger 1100 is arranged between desulfurizing tower 900 and demister 600, for the heat of recovered flue gas, save the energy, thereby reduce flue-gas temperature.Heat exchanger 1100 can series, parallel, or the arbitrary form of series connection and parallel combination uses, heat exchanger 1100 can adopt tubular structure, also can adopt plank frame.
As shown in figure 11,400 conducts of chemical washing device are independently installed after the shower water that can be arranged on desulfurizing tower 900 inner tops tops.In order to increase NO in chemical reagent and flue gas
x, SO
xreaction time, improve clean-up effect, after chemical washing device 400 can be arranged on desulfurizing tower 900 outlets, on any flue before chimney 1000 (referring to Fig. 2, Fig. 4), even can be arranged on the bottom of chimney 1000.In addition, also can save chemical washing device 400 these devices, adopt chemical reagent to substitute the shower water on desulfurizing tower 900 tops, or in the shower water after the interior demister of desulfurizing tower 900, add chemical reagent (referring to Figure 20).One or more layers showering washing device (being equivalent to chemical washing device 400) (referring to Figure 21) can also be set after the interior shower water of desulfurizing tower 900.
As shown in Figure 12,13 and 22, when flue is while vertically arranging, chemical reagent can spray into from one or several limit walls of flue, also can spray into from the top of flue, also can spray into from bottom to top in flue inside, also can spray into from the top down in flue inside.As shown in Figure 16-18, when flue is while being horizontally disposed, chemical reagent can spray into from one or several limit walls of flue, also can spray into from the side of flue, also can be in flue inside from back to front adverse current spray into, also can spray into from front to back in flue inside.
The spray head 910 of described chemical washing device 400 can be that a row also can arrange more, and the quantity of every row's spray head 910 is all greater than 1, and the number of plies of spray head 910 can be one or more layers, the spacing between each layer can be equidistant can be also not equidistant.
Coal-fired plant flue gas high-level cleaner of the present utility model, produces the NO containing in flue gas for coal-burning power plant
x, SO
xbenitration reactor 300, desulfurizing tower 900 and chemical washing device 400 and/or demister 600 are set.Wherein Benitration reactor is for NO
xarrange, by most NO in flue gas
xremove; Desulfurizing tower 900 is for SO
xarrange, by most SO in flue gas
xremove; Chemical washing device 400 in flue gas after Benitration reactor 300 and desulfurizing tower 900 denitration desulfurization remaining NO
x, SO
xarrange, demister 600, for removing acid drop, gypsum particle and dust, further removes pollutant from flue gas, improves the quality of discharging flue gas, makes it to meet the relevant emission request of Chinese Ministry of Environmental Protection, is conducive to the protection of atmospheric environment.And due to before chemical washing device 400 and/or demister 600 be arranged on chimney 1000, reduced NO in the flue gas of the chimney 1000 of flowing through
x, SO
xcontent, make chimney 1000 by NO
x, SO
xthe probability of corrosion reduces greatly, has increased the service life of chimney 1000.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (14)
1. a coal-fired plant flue gas high-level cleaner, be arranged between the boiler (100) and chimney (1000) of coal-burning power plant, the flue gas producing for purifying coal-burning power plant, comprises economizer (200), air preheater (500) and electrostatic precipitator (700), it is characterized in that:
Also comprise Benitration reactor (300), desulfurizing tower (900), chemical washing device (400) and/or demister (600);
Described boiler (100), economizer (200), Benitration reactor (300), air preheater (500), electrostatic precipitator (700), desulfurizing tower (900) and chimney (1000) are communicated with successively, and described chemical washing device (400) and/or demister (600) are arranged between described desulfurizing tower (900) and described chimney (1000);
The smoke gas flow producing when coal-burning power plant is during through described chemical washing device (400), with chemical reagent hybrid reaction in described chemical washing device (400) and be washed.
2. coal-fired plant flue gas high-level cleaner according to claim 1, is characterized in that, described chemical washing device (400) and/or described demister (600) are arranged in described desulfurizing tower (900) or in described chimney (1000).
3. coal-fired plant flue gas high-level cleaner according to claim 2, is characterized in that, described chemical washing device (400) and/or described demister (600) are arranged on the top of described desulfurizing tower (900).
4. coal-fired plant flue gas high-level cleaner according to claim 1, it is characterized in that, described chemical washing device (400) is arranged between described desulfurizing tower (900) and described chimney (1000), and described demister (600) is arranged between described chemical washing device (400) and described chimney (1000); Or described chemical washing device (400) and described demister (600) as a whole installation between described desulfurizing tower (900) and described chimney (1000).
5. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, described demister (600) comprises housing (611), guide vane (613) and Whirlwind cyclone (612);
Described housing (611) is around the cavity that forms sealing, and its top is provided with gas outlet, and sidewall is provided with air intake;
Described guide vane (613) is fixed on described Whirlwind cyclone (612), described Whirlwind cyclone (612) is fixed on described housing (611), described Whirlwind cyclone (612) is tubular structure, described Whirlwind cyclone (612) is communicated with the gas outlet of described housing (611), described guide vane (613) the formation helical duct that matches with described Whirlwind cyclone (612) and described housing (611), the air inlet of described helical duct is communicated with described housing (611) air intake.
6. coal-fired plant flue gas high-level cleaner according to claim 5, it is characterized in that, described demister (600) also comprises reverse taper (614), described reverse taper (614) is fixed on described housing (611), the formation fluid reservoir that matches with the bottom of described housing (611), the liquid forming for storing the droplet of flue gas.
7. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, described demister (600) comprises cylindrical shell (621) and import separator (624);
Described cylindrical shell (621) is around the cavity that forms sealing, and the sidewall of described cylindrical shell (621) is provided with air admission hole, and the top of described cylindrical shell (621) is provided with venthole;
Described import separator (624) is fixed in described cylindrical shell (621), comprise upper cover plate (6242), lower cover (6243) and waveform blade (6241) in parallel, described waveform blade (6241) in parallel is arranged between described upper cover plate (6242) and described lower cover (6243), match with described upper cover plate (6242) and lower cover (6243) and form undulating path in parallel, the air inlet of described undulating path in parallel is communicated with the air admission hole of described cylindrical shell (621), the gas outlet of described undulating path in parallel is communicated with the venthole of described cylindrical shell (621).
8. coal-fired plant flue gas high-level cleaner according to claim 7, is characterized in that, described demister (600) also comprises discharge knockout drum (622) and return duct (623);
Described discharge knockout drum (622) is fixed in described cylindrical shell (621), comprise blade-type separator in parallel (6221), the air inlet of described blade-type separator (6221) in parallel is communicated with the gas outlet of described undulating path, the liquid outlet of described blade-type separator (6221) in parallel is communicated with described return duct (623), and the gas outlet of described blade-type separator (6221) in parallel is communicated with the venthole of described cylindrical shell (621);
Described return duct (623) one end is communicated with the liquid outlet of described blade-type separator (6221), the other end stretches to the bottom of described cylindrical shell (621), for being imported by the isolated droplet of described blade-type separator (6221) bottom of described cylindrical shell (621).
9. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, described demister (600) comprises cylindrical shell (621), discharge knockout drum (622) and return duct (623);
Described cylindrical shell (621) is around the cavity that forms sealing, and the sidewall of described cylindrical shell (621) is provided with air admission hole, and the top of described cylindrical shell (621) is provided with venthole;
Described discharge knockout drum (622) is fixed in described cylindrical shell (621), comprise blade-type separator in parallel (6221), the air inlet of described blade-type separator (6221) in parallel is communicated with the air admission hole of described cylindrical shell (621), the gas outlet of described blade-type separator (6221) in parallel is communicated with the venthole of described cylindrical shell (621), and the liquid outlet of blade-type separator (6221) in parallel is communicated with described return duct (623);
Described return duct (623) one end is communicated with the liquid outlet of described blade-type separator (6221), the other end stretches to the bottom of described cylindrical shell (621), for being imported by the isolated droplet of described blade-type separator (6221) bottom of described cylindrical shell (621).
10. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, also comprise heat exchanger (1100), described heat exchanger (1100) is arranged between described desulfurizing tower (900) and described demister (600) or described chemical washing device (400), for reclaiming heat.
11. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, described demister (600) adopts multiclone (1200).
12. coal-fired plant flue gas high-level cleaners according to claim 11, is characterized in that, described multiclone (1200) is arranged vertically or is horizontally disposed.
13. according to the coal-fired plant flue gas high-level cleaner described in claim 2 or 4, it is characterized in that, described demister (600) adopts through type multi-pipe blade separator;
Described through type multi-pipe blade separator comprises public inlet plenum (631), through type blade (632), public discharge chamber (633) and public leakage fluid dram (634), described public inlet plenum (631) is communicated with the air inlet of described through type blade (632), the exhaust outlet of described through type blade (632) is communicated with described public discharge chamber (633), and described public leakage fluid dram (634) connects the leakage fluid dram in described through type blade (632) downstream.
14. coal-fired plant flue gas high-level cleaners according to claim 13, is characterized in that, described through type multi-pipe blade separator is arranged vertically or is horizontally disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165844.7U CN203771436U (en) | 2014-04-04 | 2014-04-04 | Smoke efficient purification device for coal-fired power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420165844.7U CN203771436U (en) | 2014-04-04 | 2014-04-04 | Smoke efficient purification device for coal-fired power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203771436U true CN203771436U (en) | 2014-08-13 |
Family
ID=51288625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420165844.7U Withdrawn - After Issue CN203771436U (en) | 2014-04-04 | 2014-04-04 | Smoke efficient purification device for coal-fired power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203771436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968403A (en) * | 2014-04-04 | 2014-08-06 | 彭维明 | Device and method for efficiently purifying smoke of coal-fired power plant |
| CN104289044A (en) * | 2014-09-12 | 2015-01-21 | 彭维明 | Cyclone separating device with super-clean emission and smoke purification system of coal-fired power plant |
-
2014
- 2014-04-04 CN CN201420165844.7U patent/CN203771436U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968403A (en) * | 2014-04-04 | 2014-08-06 | 彭维明 | Device and method for efficiently purifying smoke of coal-fired power plant |
| CN104289044A (en) * | 2014-09-12 | 2015-01-21 | 彭维明 | Cyclone separating device with super-clean emission and smoke purification system of coal-fired power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102059050B (en) | Low-temperature plasma smoke compound pollutant control method | |
| CN105854561A (en) | Device and process for coordinative treatment of smoke desulfuration and dedusting | |
| CN103203147B (en) | Spraying water storage impact type internal circulating dust remover and dust removal method | |
| CN103785275B (en) | Desulfurization, ash disposal, denitration integrated flue gas clarifier | |
| CN204816213U (en) | High -efficient wet flue gas desulfurization dust removal integrated device | |
| CN108786398B (en) | Flue gas desulfurization and regeneration integrated tower and renewable wet flue gas desulfurization method | |
| CN206276171U (en) | A kind of high-efficiency flue gas desulfurization cleaner | |
| CN205886590U (en) | Gas wash tower and SOx/NOx control system | |
| CN203771436U (en) | Smoke efficient purification device for coal-fired power plant | |
| CN205392073U (en) | Fountain smoke treatment device | |
| CN106474886A (en) | A kind of industrial waste-gas purifier of low temperature plasma joint two-stage dynamic wave | |
| CN203777911U (en) | Desulfuration, dedusting and denitration integrated flue gas cleaner | |
| CN204768247U (en) | Defogging wet -type desulfurizing tower system | |
| CN203253295U (en) | Spraying water storage impact type internal circulating dust remover | |
| CN208878263U (en) | A kind of wet process of FGD spray absorber | |
| CN103968403A (en) | Device and method for efficiently purifying smoke of coal-fired power plant | |
| CN203899437U (en) | Tower tank fume gas purification system | |
| CN212757789U (en) | Device for reducing ammonia desulphurization aerosol emission by using reducer pipe | |
| CN213556188U (en) | Waste gas recovery device of setting machine | |
| CN205055798U (en) | Modular wet -type flue gas desulfurization dust collector | |
| CN203955015U (en) | Denitration demister after wet desulphurization | |
| CN202860387U (en) | Turbulent ball turbocharged acceleration flue gas desulfurizing and dust-removing device | |
| CN113398722A (en) | Asphalt smoke tail gas incineration system and process | |
| CN203342606U (en) | Vortex-type soot purifying process device | |
| CN205821082U (en) | A kind of synchronized desulfuring and denitrifying waste water reuse system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140813 Effective date of abandoning: 20171020 |