CN201231132Y - Semi-dry type flue gas desulfurization device - Google Patents
Semi-dry type flue gas desulfurization device Download PDFInfo
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- CN201231132Y CN201231132Y CNU2008200143518U CN200820014351U CN201231132Y CN 201231132 Y CN201231132 Y CN 201231132Y CN U2008200143518 U CNU2008200143518 U CN U2008200143518U CN 200820014351 U CN200820014351 U CN 200820014351U CN 201231132 Y CN201231132 Y CN 201231132Y
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- flue gas
- horizontal rotation
- gas desulfurization
- devulcanizer
- rotation tubular
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Abstract
The utility model relates to a half dry type flue gas desulfurization unit which belongs to the technical field of flue gas purification. The half dry type flue gas desulfurization unit comprises a devulcanizer, a flue gas inlet, a flue gas outlet and a water-spraying device and is characterized in that the devulcanizer adopts a horizontal rotary barrel-shaped flue gas devulcanizer, wherein one end of a barrel body of the horizontal rotary barrel-shaped flue gas devulcanizer is connected with an air inlet flue, and the other end of the barrel body of the horizontal rotary barrel-shaped flue gas devulcanizer is connected with an air outlet flue; the flue gas outlet side on the horizontal rotary barrel-shaped flue gas devulcanizer is provided with a desulfurizer feeding hole the lower part of the flue gas outlet side of the horizontal rotary barrel-shaped flue gas devulcanizer is provided with a desulfuration residue discharging hole; and a spray water facility is arranged on the horizontal rotary barrel-shaped flue gas devulcanizer. By adopting the unit to perform flue gas desulfurization, the utility model has the advantages of short flow, few equipment, small occupied area, low construction investment, less operating cost, little secondary pollution, simple maintenance, and the like, and is suitable for desulfurization and purification of flue gas discharged by various coal burning boilers or sintering machines, and the like.
Description
Technical field
The utility model belongs to the flue gases purification field, particularly a kind of semi-dry fume desulfuration device.
Background technology
Flue gas desulfurization can be divided into three kinds of wet method, semidry method and dry method by the form of product.
Exist cost of investment height, operating cost height and secondary water pollution problems at the wet desulphurization technology such as the limestone-gypsum method that adopt.
Dry flue gas desulphurization technology has that equipment corrosion is little, to purify back flue gas temperature high and help chimney exhaust diffusion, can also remove the advantages such as nitrogen oxide that contain in the flue gas simultaneously, but desulfuration efficiency is low, reaction speed slowly, construction investment is big.
A kind of semi-dry method flue gas desulfurization technique of external exploitation is that the lime white absorbent sprays into the process that generates the lime-ash calcium sulfite behind the absorption tower with sulfur in smoke generation chemical reaction, moisture in this technology utilization flue gas heat evaporation lime-ash, dry back generates solid dust.But defectives such as this method exists, and equipment and pipeline are easily stifled, deposition of solid fouling in the absorption tower, sprayer wearing and tearing, corrosion of equipment, system pressure drop are big.
In recent years, domestic many units develop the semi-dry process flue gas desulphurization technology that is fit to China's national situation in succession, as warm dry flue gas desulphurization and steam activation technology etc. in the Tsing-Hua University.
Hunan Province Science and Technology Department tissue has passed through a kind of evaluation of lime stone semi-dry process flue gas desulphurization technology a few days ago.The reative cell that the desulfurizing tower of this technology is identical by a plurality of sizes, capacity equates constitutes, and fills the limestone particle that particle diameter is 10mm～15mm in each reative cell.The top of reative cell and middle and upper part, side are provided with sprinkler tip, regularly, quantitatively to surface coverage one deck thin water film of lime stone.When sulfur in smoke contacts with the limestone particle that is covered with moisture film, by diffusing in the moisture film and lime stone generation chemical reaction, the accessory substance that reaction produces is gypsum crystal more than 80%.
With the typical process flow of the approaching lime stone semi-dry process flue gas desulphurization of the utility model as shown in Figure 1.
As shown in Figure 1: the flue gas A to be desulfurization that comes from flue enters desulfurization reactor B from the bottom, and moves generally along direction from bottom to top.Be desulfurizing agent C such as granular raw material limestone adds among the desulfurization reactor B in good time.The desulfurizing agent gravitates such as lime stone C that enter desulfurization reactor move down.The top of desulfurization reactor B or go up the middle part and be provided with watering facility D, and the water spray of the lime stone in desulfurization reactor B in good time make limestone surfaces be covered with moisture film.Sulfur in smoke etc. absorb to be formed the main composition-calcium carbonate generation displacement reaction of acidic liquid such as sulfurous acid and lime stone, compounds such as generation calcium sulfite by moisture film.Calcium sulfite then can eremacausis become calcium sulfate in air.The lime-ash that the semi-dry process flue gas desulphurization technology generates is many to be sent out and flying dust etc. is formed by calcium sulfite, calcium sulfate, calcium carbonate, calcium hydroxide, calcium chloride, calcirm-fluoride, is designated hereinafter simply as desulfurization slag.The surface that effluxes from desulphurization reaction device bottom has the mass transport of desulfurization slag to screening facility E.Screenings is a desulfurization slag etc.Based on the oversize material G of lime stone through conveying device with send among the desulfurization reactor B after raw material limestone C mixes.Waste gas H can efflux through chimney J after desulfurization reactor is left on top after the desulfurization.
At present, the lime stone semidry process desulfurizer also rarely has the achievement of using on the larger capacity unit.To aforementioned vertical layout, be desulfurized flue gas along the hole between sorbent particle circuitous rise, the process that absorbs sour gas such as sulfur in smoke with its liquid phase water after the top of reactor or side are furnished with sorbent particle surfaces such as water spray facility, wetting lime stone, on operation mechanism, be similar to chemical industry GAS ABSORPTION packed tower commonly used.Gas phase be desulfurized flue gas and liquid phase water adverse current in sorbent particles such as dumped packing lime stone is walked, very easily make liquid descending in the packing layer produce bias current, channel, plume so that wall stream, thereby worsen the operating mode of packing layer gas absorption operation.The equivalent diameter of devulcanizer is bigger. and the filling batch of sorbent particles such as lime stone is higher, then produces bias current, channel, plume, so that the phenomenon of wall stream etc. is more serious, enlarge-effect is strong more, and the efficient that causes mass transfer to absorb sour gas such as sulfur dioxide obviously descends.Slowly moved down by gravity effect although exist the dumped packing bed that sorbent particle such as lime stone constitutes, more or less help alleviating enlarge-effect, can think that the disadvantage of this effect still can not be ignored.A few days ago in a kind of lime stone semi-dry process flue gas desulphurization technology that Hunan Province Science and Technology Department tissue characterization is passed through, avoid enlarge-effect is the reative cell that desulfurizing tower is identical by a plurality of sizes, capacity equates that adopts of this technology and the key factor that constitutes as far as possible.
Summary of the invention
The purpose of this utility model is to provide a kind of flow process short, equipment is few, floor space is little, construction investment is low, operating cost is few, secondary pollution is little, safeguard simple semi-dry fume desulfuration device, the desulfurizer that it has got rid of the heavy caliber sorbent particle filler in bulk of vertical layout easily produces enlarge-effect and reduces the factor of desulfuration efficiency.By being rotated the fully moistening of the sorbent particle surface of roll stirring, and flue gas and the cross-flow campaign that is stirred between the sorbent particle have improved desulfuration efficiency; It also in same equipment, realized flue gas desulfurization and desulfurizing agent regeneration, desulfurization slag integration of function such as separate.
The purpose of this utility model realizes by following technical proposals:
A kind of semi-dry fume desulfuration device, comprise devulcanizer, smoke air inlet, the flue gas exhaust mouth, spray water system, it is characterized in that devulcanizer adopts horizontal rotation tubular flue gas desulfurization device, being provided with smoke air inlet at an end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device is connected with the air inlet flue, the other end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device is provided with the flue gas exhaust mouth and is connected with exit flue, the flue gas exhaust oral-lateral is provided with the inlet that adds of desulfurizing agent on horizontal rotation tubular flue gas desulfurization device, the smoke air inlet side is provided with the outlet of desulfurization slag on the horizontal rotation tubular flue gas desulfurization device, also is provided with the shower water facility on horizontal rotation tubular flue gas desulfurization device.
Described horizontal rotation tubular flue gas desulfurization device inwall is provided with spiral deflector.
The spiral deflector that described horizontal rotation tubular flue gas desulfurization device inwall is provided with is two opposite cover spiral deflectors of rotation water conservancy diversion direction, and the axial length of flue gas exhaust oral-lateral spiral deflector is longer than the axial length of smoke air inlet side spiral deflector.
Described spiral deflector is the deflector of the different partially perforations of width.
Described gas approach side at horizontal rotation tubular flue gas desulfurization device is provided with the desulfurization slag sieve compartment, is provided with in the bottom of the sieve compartment of desulfurization slag to contain powder container and cinder conveyer automatically.
The sieve compartment of described desulfurization slag is by the slit or the sieve aperture of the sieved powder of being opened on horizontal rotation tubular flue gas desulfurization device sidewall, and the Sheng powder container that has ash discharging hole that is located at the periphery of slit or sieve aperture section is formed.
Described shower water facility is arranged on the smoke air inlet place of horizontal rotation tubular devulcanizer, the flue gas exhaust mouth place that is arranged on horizontal rotation tubular devulcanizer, smoke air inlet that is separately positioned on horizontal rotation tubular flue gas desulfurization device and exhaust outlet two ends or is separately positioned on the smoke air inlet of horizontal rotation tubular flue gas desulfurization device and in horizontal rotation tubular flue gas desulfurization device tube a sparge pipe is set vertically the exhaust outlet two ends time again.
The utility model compared with prior art has the following advantages and beneficial effect:
1. because the method that has adopted above-mentioned horizontal rotation tubular flue gas desulfurization device to carry out flue gas desulfurization makes desulphurization reaction and screening function realize integrated.Before horizontal rotation tubular flue gas desulfurization device operation, the flue gas ash removal operation is not set, is about to the dedusting function of flue gas ash removal operation, be incorporated in the horizontal rotation tubular flue gas desulfurization device operation.
The reactor of former process unit splits with the screening part.
Since sorbent particle in horizontal rotation tubular flue gas desulfurization device centered on this equipment along with the rotation of devulcanizer is driving axially do circumferential movement, the then circuitous reach between the particle slit of unsettled desulfurizing agent bed of desulfurization flue gas, be the cross-flow campaign between flue gas and the sorbent particle that is stirred, its mutual collision probability is increased relatively; Because of colliding the granule that fragmentation produces, can improve the specific area of desulfurizing agent effectively between the sorbent particle; Between the sorbent particle because of colliding the desulfurization slag that constantly peels off the sorbent particle surface, thereby realized the regeneration of desulfurizing agent, this all helps improving smoke desulfurization efficiency.
In the flue gas desulfurization device of former process unit, the desulfurization flue gas is then moving on the complications between the particle slit of metastable desulfurizing agent bed.
3. owing to adopted horizontal rotation tubular flue gas desulfurization device, the stirring action of rotary flue gas desulfurization device has thoroughly done away with possibility and the consequent limiting factor that flue gas desulfurization reactor maximized thereof of the liquid phase water of the fume desulfurating absorption tower that is generally vertical layout along descending generation enlarge-effects of sorbent particle filling batch such as lime stones; It is evenly wetting that sorbent particles such as lime stone are added water, highly beneficial to improving smoke desulfurization efficiency.
4. reduced the screening internal circulating load of desulfurizing agent disengaging reactor, avoid or reduced the heat loss in the screening process, help keeping the higher temperature of flue gas after desulfurization, maybe this part heat can be used to augment the evaporation of moisture, and the moisture of augmenting helps to improve desulfuration efficiency.
Description of drawings
Fig. 1 is the production technology sketch of prior art.
Fig. 2 is the structural representation of the utility model semi-dry fume desulfuration device.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Referring to Fig. 2, a kind of semi-dry fume desulfuration device of the present utility model, comprise devulcanizer, smoke air inlet 1, flue gas exhaust mouth 8, water injector, it is characterized in that devulcanizer adopts horizontal rotation tubular flue gas desulfurization device 4, be similar to rotary kiln, the cylindrical shell of whole horizontal rotation tubular flue gas desulfurization device is by a plurality of support roller member supporting, the edge gear drive, running part is by existing reductor, pinion, formations such as motor, and have control play the gear wheel facility, in cylindrical shell, stud with corrosion-resistant, wear-resisting anti-skidding liner plate, to improve the service life of cylindrical shell, its liner is disconnectable.Being provided with smoke air inlet 1 at an end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device 4 is connected with the air inlet flue, the other end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device is provided with flue gas exhaust mouth 7 and is connected with exit flue, enters flue gas axially the moving forward along this horizontal rotation tubular flue gas desulfurization device of devulcanizer.On horizontal rotation tubular flue gas desulfurization device 4 flue gas exhaust mouth 7 sides be provided with desulfurizing agent add the inlet 6, smoke air inlet 1 side lower part is provided with the outlet of desulfurization slag on the horizontal rotation tubular flue gas desulfurization device 4, also is provided with shower water facility 8 on horizontal rotation tubular flue gas desulfurization device 4.
The utility model is provided with spiral deflector 12 at the inwall of the horizontal rotation tubular of said apparatus flue gas desulfurization device 4, sorbent particle is under the effect that is arranged on the spiral deflector 12 on the horizontal rotation tubular flue gas desulfurization device inwall, make the two ends of desulfurizing agent from the cylindrical shell of horizontal rotation tubular flue gas desulfurization device, inside vertically, past high to amassing wealth by heavy taxation.The spiral deflector 12 that described horizontal rotation tubular flue gas desulfurization device inwall is provided with is two opposite cover spiral deflectors of rotation water conservancy diversion direction, and the axial length of flue gas exhaust oral-lateral spiral deflector is longer than the axial length of smoke air inlet side spiral deflector; Described spiral deflector 12 is the deflector of the different partially perforations of width.Its deflector 12 not only can make the desulfurizing agent limestone particle past high to amassing wealth by heavy taxation in horizontal rotation tubular flue gas desulfurization device, has also played the effect that keeps the suitable gas permeability of limestone particle simultaneously.Like this, except that the both ends of flue gas desulfurization device, height of materials should be not less than the tapping of the spiral deflector 12 that is in the top in rotatablely moving.
The gas approach side of the horizontal rotation tubular flue gas desulfurization device 4 of the utility model in said apparatus is provided with the sieve compartment 3 of desulfurization slag, is provided with in the bottom of the sieve compartment 3 of desulfurization slag to contain powder container 10 and cinder conveyer 9 automatically.The sieve compartment 3 of described desulfurization slag is by the slit 11 or the sieve aperture of the sieved powder of being opened on horizontal rotation tubular flue gas desulfurization device sidewall, and the Sheng powder container 10 that has ash discharging hole that is located at the periphery of slit 11 or sieve aperture section is formed.Desulfurization slag is through the screening realization of sieve compartment and the disengaging of desulfurizing agent, and the desulfurization slag after the screening falls into the set Sheng powder container 11 and warp cinder conveyer 9 discharges automatically in bottom of sieve compartment 3.The raw material of industry such as the material of discharging can be used for cement, building materials, build the road.
The utility model also is provided with spray water system in said apparatus, described shower water facility 8 is arranged on the smoke air inlet place of horizontal rotation tubular devulcanizer, can also be arranged on the flue gas exhaust mouth place of horizontal rotation tubular devulcanizer, shower water facility 8 also can be separately positioned on the smoke air inlet and the exhaust outlet two ends of horizontal rotation tubular flue gas desulfurization device, or shower water facility 8 also is provided with a sparge pipe 13 when being separately positioned on the smoke air inlet of horizontal rotation tubular flue gas desulfurization device and exhaust outlet two ends vertically again in horizontal rotation tubular flue gas desulfurization device tube.
Spray water system can adopt above-mentioned different modes to fix according to length of horizontal rotation tubular flue gas desulfurization device etc.Can be fixed on the flue as two ends, the middle part can utilize support of bearing etc. to be supported on the inner tube wall of horizontal rotation tubular flue gas desulfurization device.According to the temperature of flue gas to be desulfurization, humidity etc., spray water system can be toward spray water, water vapour or water smoke etc. in flue gas or the desulfurizing agent lime stone.
What the desulfurizing agent lime stone was being centered on this equipment along with the rotation of horizontal rotation tubular flue gas desulfurization device is driving axially does circumferential movement, the rotating speed of horizontal rotation tubular flue gas desulfurization device is unsuitable too fast, its rotating speed can be not quite similar with the size of diameter, but can even moistening being advisable with the surface of sorbent particles such as dress lime stone in it.The flue gas exhaust mouth place of devulcanizer is suitable obviously big than the sorbent particle surface wettability degree such as lime stone at its gas approach place in addition.Discharge from exhaust opening after the gas cleaning, unreacted desulfurizing agent is gone round and round a millstone after side swipe hits in the devulcanizer inward turning, falls back in the devulcanizer to recycle, to improve the utilization rate of desulfurizing agent.
Based on environmental requirement, the utility model is provided with sealing ring 2 respectively in the joint portion of the two ends floss hole of described horizontal rotation tubular flue gas desulfurization device and smoke air inlet and flue gas gas outlet.Its objective is that horizontal rotation tubular flue gas desulfurization device is dustproof, anti-leak in order to make.In addition, still the joint portion of horizontal rotation tubular flue gas desulfurization device and two ends and flue can be placed in the closed chamber of dustproof, antinoise, anti-leak; Also can be only with certain end of horizontal rotation tubular flue gas desulfurization device or contain certain end of horizontal rotation tubular flue gas desulfurization device of sieve compartment 3 and the running part of horizontal rotation tubular flue gas desulfurization device is deployed in the closed chamber of dustproof, antinoise, anti-leak.
The utility model is provided with height of materials instrument detector on described horizontal rotation tubular flue gas desulfurization device, in order to the height of materials in the detection devulcanizer, and then the raw material limestone amount that the particle diameter that comes from desulfurizing agent feed bin 5 is 15mm～25mm is added in control; The two ends of horizontal rotation tubular flue gas desulfurization device or its inside, and minus sieve material etc. locates to be provided with temperature sensor, humidity sensor, in order to detect into and out of devulcanizer or in devulcanizer the temperature and humidity of flue gas, and can control the required additional water yield of corresponding each of horizontal rotation tubular flue gas desulfurization device in conjunction with the desulfurized effect of outlet flue gas.
For satisfying the requirement of desulfurization flue gas treating capacity, a plurality of horizontal rotation tubular flue gas desulfurization devices can parallel way be arranged in groups; For guaranteeing desulfuration efficiency, a plurality of horizontal rotation tubular flue gas desulfurization device forms of can also connecting are arranged in groups; For satisfying the requirement of above-mentioned two aspects simultaneously, a plurality of horizontal rotation tubular flue gas desulfurization devices can the series and parallel mode be arranged in groups.
It is short that equipment of the present utility model has flow process, and equipment is few, and floor space is little, construction investment is low, Operating cost is few, and secondary pollution is little, safeguards the advantages such as simple, is applicable to all kinds of coal-burning boilers or burning The flue gas desulfurization of the discharging such as knot machine purifies.
Claims (10)
1, a kind of device of semi-dry fume desulfuration, comprise devulcanizer, smoke air inlet, the flue gas exhaust mouth, spray water system, it is characterized in that devulcanizer adopts horizontal rotation tubular flue gas desulfurization device, being provided with smoke air inlet at an end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device is connected with the air inlet flue, the other end of the cylindrical shell of horizontal rotation tubular flue gas desulfurization device is provided with the flue gas exhaust mouth and is connected with exit flue, the flue gas exhaust oral-lateral is provided with the inlet that adds of desulfurizing agent on horizontal rotation tubular flue gas desulfurization device, the smoke air inlet side is provided with the outlet of desulfurization slag on the horizontal rotation tubular flue gas desulfurization device, also is provided with the shower water facility on horizontal rotation tubular flue gas desulfurization device.
2, the device of the method for semi-dry fume desulfuration according to claim 1 is characterized in that described horizontal rotation tubular flue gas desulfurization device inwall is provided with spiral deflector.
3, the device of the method for semi-dry fume desulfuration according to claim 2, it is characterized in that the spiral deflector that described horizontal rotation tubular flue gas desulfurization device inwall is provided with is two opposite cover spiral deflectors of rotation water conservancy diversion direction, the axial length of flue gas exhaust oral-lateral spiral deflector is longer than the axial length of smoke air inlet side spiral deflector.
4, the device of the method for semi-dry fume desulfuration according to claim 2 is characterized in that described spiral deflector is the deflector of the different partially perforations of width.
5, the device of the method for semi-dry fume desulfuration according to claim 1, it is characterized in that described gas approach side at horizontal rotation tubular flue gas desulfurization device is provided with the sieve compartment of desulfurization slag, be provided with in the bottom of the sieve compartment of desulfurization slag and contain powder container and cinder conveyer automatically.
6, the device of the method for semi-dry fume desulfuration according to claim 5, it is characterized in that slit or the sieve aperture of the sieve compartment of described desulfurization slag, and the container that has ash discharging hole that is located at the periphery of slit or sieve aperture section is formed by the sieved powder of on horizontal rotation tubular flue gas desulfurization device sidewall, being opened.
7, the device of the method for semi-dry fume desulfuration according to claim 1 is characterized in that described shower water facility is arranged on the smoke air inlet place of horizontal rotation tubular devulcanizer.
8, the device of the method for semi-dry fume desulfuration according to claim 1 is characterized in that described shower water facility is arranged on the flue gas exhaust mouth place of horizontal rotation tubular devulcanizer.
9, the device of the method for semi-dry fume desulfuration according to claim 1 is characterized in that described shower water facility is separately positioned on the smoke air inlet and the exhaust outlet two ends of horizontal rotation tubular flue gas desulfurization device.
10, the device of the method for semi-dry fume desulfuration according to claim 1, when it is characterized in that described shower water facility is separately positioned on the smoke air inlet of horizontal rotation tubular flue gas desulfurization device and exhaust outlet two ends, in horizontal rotation tubular flue gas desulfurization device tube, a horizontal sparge pipe is set vertically again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200143518U CN201231132Y (en) | 2008-07-22 | 2008-07-22 | Semi-dry type flue gas desulfurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200143518U CN201231132Y (en) | 2008-07-22 | 2008-07-22 | Semi-dry type flue gas desulfurization device |
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| Publication Number | Publication Date |
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| CN201231132Y true CN201231132Y (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200143518U Expired - Lifetime CN201231132Y (en) | 2008-07-22 | 2008-07-22 | Semi-dry type flue gas desulfurization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632894B (en) * | 2008-07-22 | 2012-05-09 | 鞍山大盛管道工程有限公司 | Semidry type smoke desulphurization method and device |
| CN108722167A (en) * | 2017-04-20 | 2018-11-02 | 蓝鸟环境株式会社 | Dry type sour gas equipped with reactant recycling device and dioxin processing equipment |
-
2008
- 2008-07-22 CN CNU2008200143518U patent/CN201231132Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101632894B (en) * | 2008-07-22 | 2012-05-09 | 鞍山大盛管道工程有限公司 | Semidry type smoke desulphurization method and device |
| CN108722167A (en) * | 2017-04-20 | 2018-11-02 | 蓝鸟环境株式会社 | Dry type sour gas equipped with reactant recycling device and dioxin processing equipment |
| CN108722167B (en) * | 2017-04-20 | 2021-05-07 | 蓝鸟环境株式会社 | Dry type acid gas and dioxin treatment equipment provided with reactant recycling device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090506 Effective date of abandoning: 20160725 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |