CN203764046U - Water-spray tube-type dust collector - Google Patents
Water-spray tube-type dust collector Download PDFInfo
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- CN203764046U CN203764046U CN201420117124.3U CN201420117124U CN203764046U CN 203764046 U CN203764046 U CN 203764046U CN 201420117124 U CN201420117124 U CN 201420117124U CN 203764046 U CN203764046 U CN 203764046U
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- dust removing
- water
- removing tube
- pipe
- spray type
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Abstract
The utility model belongs to the technical field of waste gas purification, and particularly relates to a water-spray tube-type dust collector. According to the water-spray tube-type dust collector, the technical principle of an impact type dust collector is combined with the technical principle of a water film type dust collector, so that dust collection on saturated wet flue gas is realized, and the purposes of dust collection and defogging of flue gas generated from a wet desulfurizer are achieved. The water-spray tube-type dust collector provided by the utility model is generally applied to the industry of electric power environmental protection, the working position of the water-spray tube-type dust collector is at the downstream part of the wet flue gas desulfurizer (FGD) of a thermal power plant, a water film is formed on the surface of a tube bundle of the dust collector in a water pouring or water spraying manner, and impurities such as fine particle dust, gypsum and liquid water in the flue gas are captured, so that clean discharge of the flue gas in the thermal power plant is realized, and the dust collection efficiency of the equipment and the stability of long-term working are ensured.
Description
Technical field
The utility model belongs to waste gas purification technical field, is specifically related to a kind of water spray type pipe precipitator, can be used for dedusting and the demist of flue gas after wet desulphurization device.
Background technology
Coal be take as main energy resource structure in China, causes domestic power supply point mainly to take coal-fired thermal power generation as main.The end of the year in 2010, China's capacity of installed generator reaches 9.5 hundred million kilowatts of left and right, and wherein the installed capacity of thermal power generation electricity is 700,000,000 kilowatts, accounts for 73.68% left and right of total capacity.
Coal-burning power plant, in order to solve boiler smoke emission pollution problem, has taked a large amount of technical measures in recent years, reduces flue dust, SO
2, the discharge of the pollutants such as nitrogen oxide, has successively carried out setting up and transforming of electrostatic precipitator, flue gas desulphurization system (FGD), flue gas denitrification system (SCR).The whole blowdown level of Thermal Power Generation Industry reduces greatly at present.
But, a large amount of uses due to wet desulphurization, the content of gypsum in boiler chimney is improved greatly, although power plant has installed electrostatic precipitator, but because desulfurizer is arranged in the downstream of deduster, so cannot process the gypsum that desulphurization system produces, in any case improve the efficiency of deduster, also cannot reduce the gypsum content in flue gas.And gypsum rain phenomenon has become one of main Environmental Problems having a strong impact on power plant's surrounding resident life at present.Therefore a lot of local power plant can not normally produce, and society and enterprise have all been brought to ill effect.And due to the fast development of national economy and the further raising of environmental requirement, make current smoke dust emission level also need further to be reduced.
At present, domestic coal-fired station has equipped in a large number and has not established GGH(flue gas heater) limestone-gypsum method flue gas desulfur device, smog discharge temperature is 50 ℃ of left and right, in flue gas, water vapour is saturation state, also contains ultra-fine flue dust, SO in flue gas
2, SO
3the pollutant of failing to wash away completely Deng desulfurizer, wherein SO
3for aerosol state, due to the impact of sulfur removal technology, in flue gas, also can carry gypsum particle secretly in addition, these pollutants will directly be brought into atmosphere from chimney, then meet condensation knot, can aggravate the formation of gypsum rain.Not only cause environmental pollution, also waste water resource in a large number.
At present the improvement of desulfurated plaster rain is mainly comprised to following several mode:
1. flue gas reheat: desulfuration absorbing tower is exported to cigarette temperature and be increased to 80 ℃ from 50 ℃ of left and right, making the water vapour in flue gas is undersaturated condition, and the phenomenon of can not condensing while discharging chimney improves atmosphere hoist height simultaneously, increase diffusion area, fall oligosaprobic local influence.
2. on absorption tower, wet-type electrostatic defroster is set up in outlet, catches grit and drop in flue gas, reaches the object of reduction of discharging.
All there is different problems in above-mentioned two kinds of methods, the former will transform thoroughly to desulfurizer, installs GGH heat exchanger additional, not only equipment manufacturing cost is high, and volume is large, and a lot of scenes are difficult to arrange, equipment resistance is more than 1000Pa, and the subsidiary engine power consumption bringing is considerable; The latter is owing to will considering Anticorrosion, so equipment manufacturing cost is very high, in order to guarantee except fog effect, flue gas flow rate need to be fallen too low, so equipment volume is huger, on-the-spot being difficult to arranged, and this kind equipment is few in power industry application, actual use experience is few.
The problem of preventing and treating of gypsum rain is very urgent, needs a kind of simple, reliable, efficient technological means to solve.In addition, State Bureau of Environmental Protection has launched the discussion that thermal power plant's flue dust discharge capacity is further reduced at present, and after this makes desulfurization, further dedusting becomes the hot issue that industry is discussed.
Summary of the invention
For the problems referred to above, the utility model provides a kind of water spray type pipe precipitator, by by the know-why combination of impingement collector and water film type duster, realized the dedusting of saturated wet flue gas, solved dedusting and the demist problem of flue gas after wet desulphurization device.
In order to achieve the above object, the utility model provides following technical scheme:
A water spray type pipe precipitator, is arranged in flue, it is characterized in that: it comprises atomizer 1, dust removing tube grid 2, dust removing tube 3, top cover 4, pipe grid support member 5, wash tub pipe 6;
Wherein, dust removing tube 3 is U-shaped pipe, perpendicular to flue direction, arranges, before and after it, is furnished with a plurality of atomizers 1, makes dust removing tube 3 surfaces form uniform moisture film; The tube bank of a plurality of dust removing tubes 3 is arranged perpendicular to flue, forms dust removing tube grid 2; Described dust removing tube 3 is fixed by bracing or strutting arrangement; Described bracing or strutting arrangement comprises at the pipe grid support member 5 of the top cover 4 at dust removing tube grid 2 tops, dust removing tube grid 2 both sides, is arranged in the support bar 9 between pipe grid support member 5, and for regulate spacing between a plurality of dust removing tubes 3, be arranged at the spacer ring 8 between pipe clamp 7; Wherein, support bar 9 both sides are fixed with a plurality of dust removing tubes 3 by pipe clamp 7, are arranged between the pipe row of dust removing tube 3 of sides adjacent of adjacent supports bar 9 and are provided with Lou grey interval 10;
Dust removing tube grid 2 are provided with water rinse-system; Dust removing tube grid 2 and water rinse-system below are provided with water leg.
In described water spray type pipe precipitator, dust removing tube 3 is along being parallel to 1.3-2 that pipe row between flue gas direction is spaced apart dust removing tube 3 external diameters doubly, and the 1.5-3 that dust removing tube 3 is spaced apart dust removing tube 3 external diameters along the pipe row perpendicular between flue gas direction doubly.
Described dust removing tube 3 adopts fluoroplastics or polybutene material to make.
Described dust removing tube grid 2 front and back are furnished with a plurality of atomizers 1, and the water smoke of atomizer 1 ejection makes dust removing tube 3 surfaces form uniform moisture film.
At flue, be furnished with high-order water tank of voltage regulation 12 outward, by the stable water supply of waterpipe, make dust removing tube 3 surfaces form uniform moisture film.
Described water rinse-system comprises and rinses jellyfish pipe 6, and and flushing jellyfish pipe 6 be connected go deep into formula flushing water arm 11.
Pressure reduction on-line measurement device before and after described water spray type pipe precipitator also comprises.
The pipe external diameter of described dust removing tube 3 is 5-10mm, and wall thickness is 0.4-1.0mm.
The washing pressure of described water rinse-system is 0.8MPa, within every 8 hours, rinses 20 seconds.
In described bracing or strutting arrangement, described support bar 9 is provided with hole, and pipe clamp 7, through the hole on support bar 9, is wrapped on support bar 9 and forms U-shaped pipe clamp, wherein between U-shaped pipe clamp, is provided with spacer ring 8.
Compared with prior art, the beneficial effects of the utility model are:
1, water spray type pipe precipitator of the present utility model is generally applied to power environment protection industry; operating position is in the downstream of thermal power plant Wet FGD (FGD); the moisture film that utilizes dust removing tube surface to form; the impurity such as the fine grained dust in seizure flue gas, gypsum, aqueous water; realize the clean emission of coal steam-electric plant smoke, guarantee efficiency of dust collection and the long-term working stability of equipment.
2, water spray type pipe precipitator of the present utility model to desulfurizer after the whole efficiency of dust collection of flue gas can between 40-90%, design as required, reentrainment of dust can be avoided at all; The problem that can solve effectively up hill and dale existing desulfurizer gypsum rain, gypsum particle removal efficiency is between 80-90%; Selecting of material can be so that equipment corrosion problem be solved at all; Device structure design can be avoided stifled grey scale problems.
Accompanying drawing explanation
Fig. 1 is the structural representation of water spray type pipe precipitator of the present utility model;
Fig. 2 is the partial left side view of Fig. 1;
Fig. 3 is the top view of Fig. 1;
Fig. 4 is the partial enlarged drawing of A part in Fig. 3, shows the supporting construction schematic diagram of dust removing tube in the utility model.
[primary clustering symbol description]
1 atomizer 2 dust removing tube grid
3 dust removing tube 4 top covers
5 pipe grid support members 6 rinse jellyfish pipe
7 pipe clamp 8 spacer rings
9 support bars 10 leak grey interval
11 go deep into formula flushing water arm 12 high-order water tank of voltage regulation
The specific embodiment
Below, by reference to the accompanying drawings with embodiment, explain in detail further water spray type pipe precipitator of the present utility model.
As Figure 1-4, the water spray type pipe precipitator of the present embodiment comprises atomizer 1, dust removing tube grid 2, dust removing tube 3, top cover 4, pipe grid support member 5, wash tub pipe 6.
Wherein, dust removing tube 3 is U-shaped pipe, perpendicular to flue direction, arranges, before and after it, is furnished with a plurality of atomizers 1, makes dust removing tube 3 surfaces form uniform moisture film; Or be furnished with high-order water tank of voltage regulation 12 outward at flue, by the stable water supply of waterpipe, make dust removing tube 3 surfaces form uniform moisture film; The tube bank of a plurality of dust removing tubes 3 is arranged perpendicular to flue, forms dust removing tube grid 2.
Described dust removing tube 3 is fixed by bracing or strutting arrangement.Described bracing or strutting arrangement comprises at the pipe grid support member 5 of the top cover 4 at dust removing tube grid 2 tops, dust removing tube grid 2 both sides, is arranged in the support bar 9 between pipe grid support member 5, and for regulate spacing between a plurality of dust removing tubes 3, be arranged at the spacer ring 8 between pipe clamp 7.Wherein, support bar 9 both sides are fixed with a plurality of dust removing tubes 3 by pipe clamp 7.
Dust removing tube grid 2 one sides are provided with water rinse-system.Dust removing tube grid 2 and water rinse-system below are provided with water leg.Wherein, be arranged between the pipe row of dust removing tube 3 of sides adjacent of adjacent supports bar 9 and be provided with Lou grey interval 10.
Wherein, dust removing tube 3 is along being parallel to 1.3-2 that pipe row between flue gas direction is spaced apart dust removing tube 3 external diameters doubly, and the 1.5-3 that dust removing tube 3 is spaced apart dust removing tube 3 external diameters along the pipe row perpendicular between flue gas direction doubly.
The present embodiment adopts the dust removing tube 3 of U-shaped shell and tube to stop part as flue dust flow-disturbing, and its pipe external diameter is 5-10mm, and wall thickness is 0.4-1.0mm.The tube bank of a plurality of dust removing tubes 3 is arranged perpendicular to flue, forms choked flow dust removing tube grid 2.And it is fixing to adopt longitudinal fluoroplastics to support pipe clamp 7, can absorb the vertical direction expansion displacement of tube bank, form the flow channel of vertical direction simultaneously, guarantee that condensate water and flushing water can directly flow down, and do not assemble.
The selection of dust removing tube 3 tubing: the selection of tubing need to be considered running temperature, abrasion resistance properties, the key factors such as tubing creep-resistant property, final definite select fluoroplastics (FEP or PFA) and polybutene bi-material, selected according to different operating modes.
Determining of dust removing tube 3 tube pitch: the tube pitch of dust removing tube 3 (comprising along being parallel to flue gas direction and arranging interval perpendicular to the pipe of flue gas direction) by experiment data is determined, to guarantee minimum gas collateral resistance and dust removing effects.
Determining of dust removing tube 3 pipe row amounts: tube bank need to require calculative determination according to efficiency of dust collection along the pipe row amount of flow of flue gas direction; Tube bank requires according to flue gas resistance and efficiency of dust collection requirement calculative determination along the quantity of vertical flow of flue gas direction.
The welding procedure of tube sheet material and tube bank: adopt welding fabrication technology of multistage heat conduction, guarantee that plugging rate is less than 5/1000ths.
As shown in Figure 4, the bracing or strutting arrangement of the present embodiment adopts the vertical hanging structure of modularized design, and support bar 9 is provided with hole, and pipe clamp 7, through the hole on support bar 9, is wrapped on support bar 9 and forms U-shaped pipe clamp 7, wherein between U-shaped pipe clamp 7, is provided with spacer ring 8.And described bracing or strutting arrangement adopts perfluor plastic member, avoids corrosion and scaling, project organization has formed unobstructed vertical water circulation road (leaking grey interval 10), prevents from that buck from assembling to harden.
The present embodiment adopts fixed high-pressure water rinse-system, and dust removing tube 3 is carried out to online water flushing, and washing pressure reaches 0.8MPa, within every 8 hours, rinses 20 seconds, guarantees the cleaning on pipe grid surface.Described water rinse-system, comprises and rinses jellyfish pipe 6, and and flushing jellyfish pipe 6 be connected go deep into formula flushing water arm 11.Can be flushed to tube bank inner, guarantee good developing result.
Pressure reduction on-line measurement device before and after the present embodiment is provided with, when flue gas resistance reaches capping, automatic open water rinse-system, until flue gas resistance reaches setting lower limit.
The course of work of the present embodiment is as follows: the water spray type pipe precipitator of the present embodiment is arranged in the flue after desulfuration absorbing tower, to U-shaped shell and tube dust removing tube 3 surface sprinklings, or pass through high-order water tank of voltage regulation 12 to the surperficial trickle of U-shaped shell and tube dust removing tube 3, on dust removing tube 3 surfaces, form the moisture film of adequate thicknesses.Drop and particle that U-shaped shell and tube dust removing tube 3 forms in 2 pairs of flue gases of dust removing tube grid are tackled, make it that fierce flow-disturbing and collision occur, liquid particles parcel solid granulates is grown up gradually, and attach on dust removing tube 3, the moisture film on dust removing tube 3 surfaces, not only play the effect of adhesion dust, can also play the effect of rinsing dust removing tube 3, the tubulation of dust removing tube 3 adopts and is arranged vertically mode and is provided with certain leakage ash interval 10, moisture film can flow from top to bottom, by the particulate solid band attaching in water leg.Water leg can be connected with water treatment system, after the mortar rinsing is collected, is sent to water treatment system, and the supplementing water that can be used as desulfurization through processing is used.In addition, the present embodiment is also provided with independently water flushing device, and regularly open water flusher, guarantees that dust removing tube grid 2 surfaces are clean, plays the effect of ash discharge simultaneously; The water flushing device of the present embodiment also can be opened according to the testing result of pressure reduction on-line measurement device simultaneously, and when flue gas resistance reaches capping, automatic open water rinse-system, until flue gas resistance reaches setting lower limit.
Claims (10)
1. a water spray type pipe precipitator, is arranged in flue, it is characterized in that: it comprises atomizer (1), dust removing tube grid (2), dust removing tube (3), top cover (4), pipe grid support members (5), wash tub pipe (6);
Wherein, dust removing tube (3) is U-shaped pipe, perpendicular to flue direction, arranges, before and after it, is furnished with a plurality of atomizers (1), makes dust removing tube (3) surface form uniform moisture film; The tube bank of a plurality of dust removing tubes (3) is arranged perpendicular to flue, forms dust removing tube grid (2); Described dust removing tube (3) is fixed by bracing or strutting arrangement; Described bracing or strutting arrangement comprises and is positioned at the top cover (4) at dust removing tube grid (2) top, the pipe grid support member (5) of dust removing tube grid (2) both sides, be arranged in the support bar (9) between pipe grid support members (5), and for regulate spacing between a plurality of dust removing tubes (3), be arranged at the spacer ring (8) between pipe clamp (7); Wherein, support bar (9) both sides are fixed with a plurality of dust removing tubes (3) by pipe clamp (7), are arranged between the pipe row of dust removing tube (3) of sides adjacent of adjacent supports bar (9) and are provided with Lou grey interval (10);
Dust removing tube grid (2) are provided with water rinse-system; Dust removing tube grid (2) and water rinse-system below are provided with water leg.
2. water spray type pipe precipitator as claimed in claim 1, it is characterized in that: in described water spray type pipe precipitator, dust removing tube (3) is along being parallel to 1.3-2 that pipe between flue gas direction row is spaced apart dust removing tube (3) external diameter doubly, and the 1.5-3 that dust removing tube (3) is spaced apart dust removing tube (3) external diameter along the pipe row perpendicular between flue gas direction doubly.
3. water spray type pipe precipitator as claimed in claim 1, is characterized in that: described dust removing tube (3) adopts fluoroplastics or polybutene material to make.
4. water spray type pipe precipitator as claimed in claim 1, is characterized in that: before and after described dust removing tube grid (2), be furnished with a plurality of atomizers (1), the water smoke of atomizer (1) ejection makes dust removing tube (3) surface form uniform moisture film.
5. water spray type pipe precipitator as claimed in claim 1, is characterized in that: at flue, be furnished with high-order water tank of voltage regulation (12) outward, by the stable water supply of waterpipe, make dust removing tube (3) surface form uniform moisture film.
6. water spray type pipe precipitator as claimed in claim 1, is characterized in that: described water rinse-system comprises and rinse jellyfish pipe (6), and and flushing jellyfish pipe (6) be connected go deep into formula flushing water arm (11).
7. water spray type pipe precipitator as claimed in claim 1, is characterized in that: pressure reduction on-line measurement device before and after described water spray type pipe precipitator also comprises.
8. water spray type pipe precipitator as claimed in claim 1, is characterized in that: the pipe external diameter of described dust removing tube (3) is 5-10mm, and wall thickness is 0.4-1.0mm.
9. the water spray type pipe precipitator as described in claim 1 or 6, is characterized in that: the washing pressure of described water rinse-system is 0.8MPa, within every 8 hours, rinses 20 seconds.
10. water spray type pipe precipitator as claimed in claim 1, it is characterized in that: in described bracing or strutting arrangement, described support bar (9) is provided with hole, pipe clamp (7) is through the hole on support bar (9), be wrapped in the U-shaped pipe clamp of the upper formation of support bar (9), wherein between U-shaped pipe clamp, be provided with spacer ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117124.3U CN203764046U (en) | 2014-03-14 | 2014-03-14 | Water-spray tube-type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420117124.3U CN203764046U (en) | 2014-03-14 | 2014-03-14 | Water-spray tube-type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203764046U true CN203764046U (en) | 2014-08-13 |
Family
ID=51281294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420117124.3U Expired - Fee Related CN203764046U (en) | 2014-03-14 | 2014-03-14 | Water-spray tube-type dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203764046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861402A (en) * | 2014-03-14 | 2014-06-18 | 北京新世翼节能环保科技股份有限公司 | Water-spray-type tubular dust collector |
-
2014
- 2014-03-14 CN CN201420117124.3U patent/CN203764046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861402A (en) * | 2014-03-14 | 2014-06-18 | 北京新世翼节能环保科技股份有限公司 | Water-spray-type tubular dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |