CN2748159Y - Desulfurizing and dedusting arrangement with multi-stage water film - Google Patents

Desulfurizing and dedusting arrangement with multi-stage water film Download PDF

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Publication number
CN2748159Y
CN2748159Y CN 200420074647 CN200420074647U CN2748159Y CN 2748159 Y CN2748159 Y CN 2748159Y CN 200420074647 CN200420074647 CN 200420074647 CN 200420074647 U CN200420074647 U CN 200420074647U CN 2748159 Y CN2748159 Y CN 2748159Y
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China
Prior art keywords
conical spiral
cylindrical shell
moisture film
barrel
flue gas
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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.)
Expired - Fee Related
Application number
CN 200420074647
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Chinese (zh)
Inventor
肖学德
孟连军
张璞
张建新
周郑
李秀敏
向哲涛
闫玉德
史广利
史忠海
周剑锋
刘鹏飞
柴合范
胡志红
张军杰
张予琴
姜越飞
文德振
张新力
祁兵
周巍峰
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闫玉德
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Priority to CN 200420074647 priority Critical patent/CN2748159Y/en
Application granted granted Critical
Publication of CN2748159Y publication Critical patent/CN2748159Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a flue gas desulfurizing and dedusting device for a boiler (furnace), in particular to a desulfurizing and dedusting device with multi-stage water film comprising a barrel. Both ends of the barrel are sealed. The lower end of the barrel is provided with a water outlet. The tangential direction of the barrel approaching to the lower end is provided with a flue gas inlet. The upper end of the barrel is provided with a flue gas outlet. A jet pipe is arranged and fixed in the flue gas inlet. The center of the compaction pipe section of the jet pipe is provided with a conical spiral spraying head. The middle part of the inner cavity of the barrel is provided and fixed with conical spiral spraying heads with certain quantity from top to bottom. The conical spiral spraying heads are respectively communicated with the water pipe of the water supply device. The upper part of the inner cavity of the barrel is provided and fixed with a water vapor disengaging mechanism. The desulfurizing and dedusting device with multi-stage water film is provided with a plurality of conical spiral spraying heads to form a multi-stage water film. The performance of mist formation of the spraying head is good. The shape of mist formation is a conical solid shape. The cover area is big. The effect of screening dedusting and desulfuration is good. In addition, the structure is simple and the cost is lower.

Description

Multistage moisture film desulfation dust-extraction device
One. technical field: the utility model relates to a kind of pot (kiln) kiln gas desulfurating dust-removing equipment, particularly relates to a kind of multistage moisture film desulfation dust-extraction device.
Two. background technology: the flue gas desulfurization and dedusting one purification techniques that is applicable to middle-size and small-size industry pot (kiln) stove now mainly is the wet method sulphur removing and dust removing device.Wet dedusting is exactly to create the chance that flue gas contacts with water, if in water, add desulfurizing agent, so again can desulfurization dedusting the time, and be exactly that the desulfurization and dedusting one is carried out simultaneously.The mode that flue gas contacts with water or cleaning solution has following several: (1). and utilize atomizer that the cleaning solution that contains desulfurizing agent is atomized into fine drop, be sprayed onto in the flue gas, utilize this principle exactly as spray chamber's smoke washer; (2). allow flue gas by absorbing liquid layer, flue gas contacts with absorption liquid with bubble form, i.e. flue gas washing.As fluid bed flue gas cleaner, turbulence type flue gas cleaner, impact type, water-bath type flue gas cleaner etc.; (3). utilize effect of inertia that flue gas is contacted with moisture film, as cyclonic water film deduster, venturi water film deduster etc.; (4). utilize electrostatic force that the grit in the flue gas is contacted with liquid film, as static water dust scrubber etc.The main component sulfur dioxide that the desulphurization mechanism of wet method sulphur removing and dust removing device is actually in the flue gas is absorbed by liquid, it is a kind of chemical absorbing, inertia, surface tension, gravity, electrostatic force are inoperative to the chemical absorbing of sulfur dioxide, and what chemical absorbing was worked is diffusion motion and gas, liquid convection and the mixing of gas and fluid molecule, ion.Their common ground is to utilize contacting of flue gas and liquid, removes dust and pernicious gas and reaches clean-up effect.
The wet method sulphur removing and dust removing device should be strengthened mass transport process based on washing, purifying mechanism, reduces air film, thickness of liquid film, increases the gas-liquid contact area, the turbulence of strengthening flow, liquid stream; It is big to have the gas-liquid contact area, and air film is thin, and bubble is little, and sulfur dioxide diffusion length is short, the advantage that resistance is little.Can in cleaning solution, add solubility alkalescence material in addition,, strengthen the absorption of cleaning solution, improve the resistance to mass tranfer of liquid side sulfur dioxide as auxiliary absorbent; The desulfurizing dust-collector changes of properties can increase auxiliary control techniques in case of necessity in the time of will taking into full account underload during design, so that enable during underload, when guaranteeing underload, desulfurizing dust-collector has stable clean-up effect.
Water dust scrubber is to rely on action of centrifugal force that the heavy grain in the flue dust is got rid of to the moisture film wall, and the water under being continued to flow by sidewall washes away, thereby removes grit.But the sulfur in smoke removal efficiency is very low, so though this deduster efficiency of dust collection can meet the demands, desulfuration efficiency is low.Eddy flow plate desulfurizing dust-collector is to increase a few cover spiral reverse taper core towers in cylindrical shell, and the flue gas that repeatedly leads makes it the increased frequency in the rising of cylindrical shell inside spin, thereby has increased the time of contact of flue gas and moisture film face, thereby improves desulfuration efficiency; But various problems below in practice, having occurred:
(1). bigger for load variations, the equipment that air-flow is changeable, eddy flow moisture film are difficult for forming the desulfuration efficiency instability.
(2). the exhanst gas outlet water content is higher, and air-introduced machine also easily is with water, causes the wind page or leaf bonding of air-introduced machine, unbalance or corrosion.
(3). because sulfuric acid corrosion, the eddy flow plate needs with anticorrosive material manufacturings such as stainless steels, and cost is higher.
(4). owing to increase the eddy flow plate, resistance increases to some extent, and energy consumption increases.
Owing to have the problems referred to above, cause boiler can not reach best dust-removal and desulfurizing effect.
Three. the content of utility model:
The purpose of this utility model: overcome the defective of prior art, provide a kind of water and sulfur dioxide in flue gas time of contact long, dust-removal and desulfurizing is effective, the multistage moisture film desulfation dust-extraction device of draining open in usual.
The technical solution of the utility model: a kind of multistage moisture film desulfation dust-extraction device, the cylindrical shell that contains closed at both ends, this cylindrical shell bottom is provided with delivery port, be provided with gas approach in cylindrical shell tangential direction near the bottom, the cylindrical shell upper end is provided with exhanst gas outlet, in gas approach, be mounted with jet pipe, contraction pipeline section central authorities at jet pipe are equipped with conical spiral nozzle, be mounted with the conical spiral nozzle of some from top to bottom at the middle part of cylinder lumen, described conical spiral nozzle all with the cross current of water supply installation, be mounted with the aqueous vapor separating mechanism on the top of cylinder lumen.
The axis of described conical spiral nozzle is positioned on the axis of cylindrical shell or jet pipe, and the moisture film of conical spiral nozzle ejection is shaped as filled circles cone-shaped or hollow cone cavity shape.
Described conical spiral nozzle is one or two or three, and they are connected in parallel on the water pipe respectively.
Described aqueous vapor separating mechanism contains the sectorial plane fin of holder and some, and wherein holder is fixed on the upper inside wall of cylindrical shell, and the sectorial plane fin is uniform to be fixed on the holder, and sectorial plane fin and horizontal plane have certain included angle.
The angle α of described sectorial plane fin and horizontal plane is 20 °~45 °.
The beneficial effects of the utility model:
1. the utility model good dedusting effect, a plurality of conical spiral nozzles are installed in cylindrical shell, form multistage moisture film, this shower nozzle mist formation performance is good, its mist formation is shaped as the tapered solid shape, area coverage is big, thereby makes multistage moisture film desulfation dust-extraction device form three grades of purifications: first class purification is finished by spiral nozzle in the jet pipe; Secondary purification is finished by current on the barrel; Three grades of purifications are finished by conical spiral nozzle in the cylindrical shell.Through above-mentioned three grades of purifications, harmful substance flue dust in the flue gas and sulfur dioxide etc. are filtered fully, so the dust removal by filtration desulfurized effect is good.
2. the utility model is simple in structure, cost is lower.Wherein spiral nozzle and jet pipe are the existing product that sell in market, buy easily, and installation and removal simultaneously are convenient, are convenient to maintenance, so manufacturing cost and maintenance cost are all low, thereby improve economic benefit of enterprises.
3. the utility model mainly is applicable to industry pot (kiln) stove, be particularly useful for the higher boiler of smoke dust discharge concentration, also be applicable to scenic spot, visit open city that efficiency of dust collection is had relatively high expectations simultaneously, and the city do not have the black smoke control zone, for hot and humid concentration and the gas and the Industrial Stoves flue dust that contain the caking property dust higher purification efficiency also arranged.
4. the utility model market prospects are wide, are beneficial to promotion and implementation, have good social benefit and economic benefit after the popularization.
Four. description of drawings:
Fig. 1 is the structural representation of multistage moisture film desulfation dust-extraction device
Fig. 2 is an A-A cutaway view shown in Figure 1
Fig. 3 is the structural representation of aqueous vapor separating mechanism shown in Figure 1
Fig. 4 is the vertical view of aqueous vapor separating mechanism shown in Figure 3
Five. the specific embodiment:
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, among the figure, multistage moisture film desulfation dust-extraction device contains the cylindrical shell 3 of closed at both ends, its bottom is provided with delivery port 7, be the hydrolock structure, be provided with gas approach 1 in cylindrical shell 3 tangential directions near the bottom, its upper end is provided with exhanst gas outlet 6, in gas approach 1, be mounted with jet pipe 2, contraction section central authorities at jet pipe 2 are equipped with conical spiral nozzle 4, be mounted with 3 conical spiral nozzles 4 from top to bottom at the middle part of cylindrical shell 3 inner chambers, they are connected in parallel respectively on the water pipe 8, the axis of conical spiral nozzle 4 is positioned on the axis of cylindrical shell 3 or jet pipe 2, the moisture film of conical spiral nozzle 4 ejections is shaped as the filled circles cone-shaped, be mounted with the holder 5 of aqueous vapor separating mechanism in cylindrical shell 3 upper inside wall, sectorial plane fin 9 uniform being fixed on the holder 5, sectorial plane fin 9 is 20 °~45 ° with the angle α of horizontal plane.
The purification process of this structure is: when flue gas when gas approach 1 enters multistage moisture film desulfation dust-extraction device, carry out humidification and modifier treatment through 2 pairs of flue gases of jet pipe, flue dust increases the weight of, sulfur dioxide is absorbed for the first time by buck, tangent line enters desulfurization and dedusting cylindrical shell 3 then, relies on action of centrifugal force that the heavy grain in the flue dust is got rid of to the moisture film wall, and the water under being continued to flow by sidewall washes away, thereby remove grit, sulfur dioxide is absorbed for the second time by buck; Lighter grit and unabsorbed sulfur dioxide continue to rise, tiny grit at large and sulfur dioxide gas must penetrate the atomizing moisture film that is produced by three layers of conical spiral nozzle 4, further increase the chance that grit and sulfur dioxide contact with water in the flue gas, grit increases the weight of to fall, and sulfur dioxide gas is absorbed for the third time by buck; Like this, grit in the flue gas and sulfur dioxide by three secondary actions, are substantially all removed in clarifier; Air-flow after the purification is guided to smoke stack emission through aqueous vapor separating mechanism dehydration back by air-introduced machine; The aqueous vapor separating mechanism is made up of tens of sectorial plane fins 9 and since the effect of revolving force make gas and moisture from; The grit and the sulfur dioxide of being caught by water enter sedimentation basin reaction, precipitation, dehydration from delivery port 7 discharges that multistage moisture film desulfation dust-extraction device gets the bottom, and clear water is squeezed into clarifier by pump and recycled after adjusting pH value.
Embodiment two: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is: two conical spiral nozzles 4 are installed in cylindrical shell 3.

Claims (5)

1. multistage moisture film desulfation dust-extraction device, the cylindrical shell that contains closed at both ends, this cylindrical shell bottom is provided with delivery port, be provided with gas approach in cylindrical shell tangential direction near the bottom, the cylindrical shell upper end is provided with exhanst gas outlet, it is characterized in that: in gas approach, be mounted with jet pipe, contraction pipeline section central authorities at jet pipe are equipped with conical spiral nozzle, be mounted with the conical spiral nozzle of some from top to bottom at the middle part of cylinder lumen, described conical spiral nozzle all with the cross current of water supply installation, be mounted with the aqueous vapor separating mechanism on the top of cylinder lumen.
2. multistage moisture film desulfation dust-extraction device according to claim 1 is characterized in that: the axis of conical spiral nozzle is positioned on the axis of cylindrical shell or jet pipe, and the moisture film of conical spiral nozzle ejection is shaped as filled circles cone-shaped or hollow cone cavity shape.
3. multistage moisture film desulfation dust-extraction device according to claim 1 and 2 is characterized in that: conical spiral nozzle is one or two or three, and they are connected in parallel on the water pipe respectively.
4. multistage moisture film desulfation dust-extraction device according to claim 1, it is characterized in that: the aqueous vapor separating mechanism contains the sectorial plane fin of holder and some, wherein holder is fixed on the upper inside wall of cylindrical shell, the sectorial plane fin is uniform to be fixed on the holder, and sectorial plane fin and horizontal plane have certain included angle.
5. multistage moisture film desulfation dust-extraction device according to claim 4 is characterized in that: the angle α of sectorial plane fin and horizontal plane is 20 °~45 °.
CN 200420074647 2004-09-13 2004-09-13 Desulfurizing and dedusting arrangement with multi-stage water film Expired - Fee Related CN2748159Y (en)

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CN 200420074647 CN2748159Y (en) 2004-09-13 2004-09-13 Desulfurizing and dedusting arrangement with multi-stage water film

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Application Number Priority Date Filing Date Title
CN 200420074647 CN2748159Y (en) 2004-09-13 2004-09-13 Desulfurizing and dedusting arrangement with multi-stage water film

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CN2748159Y true CN2748159Y (en) 2005-12-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103157368A (en) * 2013-03-29 2013-06-19 常熟市中钛科技有限公司 Titanium metal tube acid cleaning waste gas purification treatment device
CN103349894A (en) * 2013-07-02 2013-10-16 苏州香山红叶环境技术有限公司 Multistage autorotation centrifugal absorber
CN106390652A (en) * 2016-09-21 2017-02-15 江苏大学 Wet type fine particle high-efficiency cyclone removal device
CN108592066A (en) * 2018-05-11 2018-09-28 林再颐 A kind of high yield desulfuration boiler
CN110721541A (en) * 2018-07-17 2020-01-24 美弗莱机械设备(惠州)有限公司 Wet dust collector's venturi spraying system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103157368A (en) * 2013-03-29 2013-06-19 常熟市中钛科技有限公司 Titanium metal tube acid cleaning waste gas purification treatment device
CN103349894A (en) * 2013-07-02 2013-10-16 苏州香山红叶环境技术有限公司 Multistage autorotation centrifugal absorber
CN103349894B (en) * 2013-07-02 2016-01-20 苏州香山红叶环境技术有限公司 Multistage autorotation centrifugal absorber
CN106390652A (en) * 2016-09-21 2017-02-15 江苏大学 Wet type fine particle high-efficiency cyclone removal device
CN108592066A (en) * 2018-05-11 2018-09-28 林再颐 A kind of high yield desulfuration boiler
CN110721541A (en) * 2018-07-17 2020-01-24 美弗莱机械设备(惠州)有限公司 Wet dust collector's venturi spraying system

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C19 Lapse of patent right due to non-payment of the annual fee
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