CN204193780U - A kind of high-efficiency desulfurization absorption tower - Google Patents
A kind of high-efficiency desulfurization absorption tower Download PDFInfo
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- CN204193780U CN204193780U CN201420657810.XU CN201420657810U CN204193780U CN 204193780 U CN204193780 U CN 204193780U CN 201420657810 U CN201420657810 U CN 201420657810U CN 204193780 U CN204193780 U CN 204193780U
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- absorption tower
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Abstract
The utility model discloses a kind of high-efficiency desulfurization absorption tower, it is little that object is to solve effective mass transfer area that the existing limestone/lime for coal-burning power plant or Industrial Boiler-gypsum wet flue gas desulfurizing device absorptive tower exists at present, the problem that sprayed slurry absorption rate is lower.This desulfuration absorbing tower comprises recycle slurry liquid pool, tower body, oxidative system, the slurry circulating pump be arranged on recycle slurry liquid pool.The utility model is as efficient lime stone/lime-gypsum wet flue gas desulfurizing countercurrent spray absorption tower, and it is to the SO in flue gas
2, the sour gas such as HCl, HF has higher absorption efficiency, mass-transfer efficiency is high, and the absorption rate of sprayed slurry is high.Under identical liquid-gas ratio condition, compare existing absorption tower, the utility model effectively can improve the absorption rate of sprayed slurry, significantly promotes SO
2absorption efficiency.The utility model is reasonable in design, and structure is simple, and cost is low, invests little, can meet the demand of industrialization large-scale application, has wide market prospects.
Description
Technical field
The utility model relates to field of environment protection equipment, is specially a kind of high-efficiency desulfurization absorption tower, and it can be used in limestone/lime-gypsum flue gas countercurrent spray desulfurization, has higher desulfuration efficiency.
Background technology
At present, in the limestone/lime-gypsum wet flue gas desulfurizing device absorptive tower of coal-burning power plant or Industrial Boiler, the absorption rate of sprayed slurry is lower, and effective mass transfer area is little, is unfavorable for SO
2mass transfer absorb, SO
2absorption efficiency lower.Meanwhile, upgrade among transformation up to standard, in order to improve SO building desulfurizer
2mass transfer absorb, can only by increasing the mode of spraying layer.By increasing spraying layer, increase liquid-gas ratio, thus reach and realize aforementioned object.Adopt which, the energy consumption of system not only can be made to increase, the cost of investment of desulfurizer also can be caused significantly to rise.
For this reason, in the urgent need to a kind of new device to solve the problem.
Utility model content
Goal of the invention of the present utility model is: for existing limestone/lime-gypsum wet flue gas desulfurizing device absorptive tower for coal-burning power plant or Industrial Boiler at present, there is effective mass transfer area little, the problem that sprayed slurry absorption rate is lower, provides a kind of high-efficiency desulfurization absorption tower.The utility model is as efficient lime stone/lime-gypsum wet flue gas desulfurizing countercurrent spray absorption tower, and it is to the SO in flue gas
2, the sour gas such as HCl, HF has higher absorption efficiency, mass-transfer efficiency is high, and the absorption rate of sprayed slurry is high.Under identical liquid-gas ratio condition, compare existing absorption tower, the utility model effectively can improve the absorption rate of sprayed slurry, significantly promotes SO
2absorption efficiency.The utility model is reasonable in design, and structure is simple, and cost is low, invests little, can meet the demand of industrialization large-scale application, has wide market prospects.
To achieve these goals, the utility model adopts following technical scheme:
A kind of high-efficiency desulfurization absorption tower, is characterized in that, comprise recycle slurry liquid pool, tower body, oxidative system, the slurry circulating pump be arranged on recycle slurry liquid pool;
The bottom of described tower body is provided with smoke inlet, and the top of described tower body is provided with neat stress outlet, and the inner one end near neat stress outlet of described tower body is provided with demister, spray equipment, and described spray equipment is made up of several spraying layers;
Be provided with agitator in described recycle slurry liquid pool, described oxidative system is connected with recycle slurry liquid pool, and described slurry circulating pump is connected with recycle slurry liquid pool, spraying layer respectively.
Described recycle slurry liquid pool is positioned at the bottom on absorption tower.
Described tower body is respectively arranged with slurries and adds entrance, water supplement port.
Described smoke inlet is away from one end of tower body higher than place, the junction horizontal plane of itself and tower body, and described smoke inlet is axially 0 ~ 20 ° with the angle of horizontal plane.
The mist eliminator flushing device that described demister comprises demister, matches with demister, described demister is positioned at above spray equipment.
Described demister is the one in deflector type demister, Flat defroster, ridge type demister.
Described demister adopts polypropylene material or glass-reinforced plastic material to be prepared from.
Also comprise the excavationg pump discharging recycle slurry liquid pool entoplasm liquid.
Described oxidative system is torch-type oxidative system or pulse suspension forced oxidation system.
Described spraying layer comprises reducing spray supervisor, reducing spray arm, the nozzle be arranged on reducing spray supervisor, and described nozzle is separately positioned on reducing spray supervisor, reducing spray arm.
Described nozzle and reducing adopt Flange joint between spraying and being responsible for or are threaded or are intertwined and connected, and described nozzle and reducing spray and to adopt Flange joint between arm or be threaded or be intertwined and connected.
Described spray equipment is made up of 2 ~ 6 layers of spraying layer, has the two-layer spraying layer that can spray different slurries granularity at least.
Described spray equipment is made up of 2 ~ 6 layers of spraying layer, bottom-up ground floor spraying layer is provided with and can sprays the nozzle that slurries granularity is 50 microns ~ 200 microns, bottom-up second layer spraying layer is provided with and can sprays the nozzle that slurries granularity is 100 microns ~ 500 microns, bottom-up third layer spraying layer and above spraying layer are provided with and can spray the nozzle that slurries granularity is 1000 microns ~ 2500 microns.
The inner wall anti-corrosive layer of described tower body adopts glass flake or rubber or polypropylene material to be prepared from.
For foregoing problems, the utility model provides a kind of high-efficiency desulfurization absorption tower.It comprises recycle slurry liquid pool, tower body, oxidative system, the slurry circulating pump be arranged on recycle slurry liquid pool, and wherein recycle slurry liquid pool is positioned at the bottom on absorption tower, forms the agent structure on absorption tower.The bottom of tower body is provided with smoke inlet, and the top of tower body is provided with neat stress outlet, and the inner one end near neat stress outlet of tower body is provided with demister, spray equipment, and spray equipment is made up of several spraying layers.Be provided with agitator in recycle slurry liquid pool, oxidative system is connected with recycle slurry liquid pool, and agitator can stir the slurries in recycle slurry liquid pool, and oxidative system can provide oxygen for recycle slurry liquid pool, promotes the carrying out of reaction; Slurry circulating pump is connected with recycle slurry liquid pool, spraying layer respectively, and slurry is transported to spraying layer by slurry circulating pump, is sprayed downwards by spraying layer, makes that itself and flue gas are reverse to be contacted, and realizes recycling of slurries.
During utility model works, the flue gas containing sulfur dioxide etc. enters inside, absorption tower by smoke inlet, and flue gas moves upward from bottom to top in absorption tower, flue gas contacts with the sprayed slurry of spraying layer, and react, reacted slurries under gravity, enter in recycle slurry liquid pool.The spray equipment that the utility model adopts Multi-layer sprinkling layer to be formed, flue gas can carry out multilayer contact with the slurries of spraying layer, thus formation contacts the several times of flue gas, thus greatly improves reaction efficiency and mass-transfer efficiency.Flue gas after purification, then through demister removing water smoke, is then exported by the neat stress of tower top and discharges.Relative to existing apparatus, the utility model adopts some layers of spraying layer, and it can realize repeatedly purifying flue gas, significantly promotes removal efficiency.Meanwhile, slurry circulating pump of the present utility model can realize the recycled for multiple times to slurries, improves the utilization rate of slurries, reduces the use amount of slurries.Relative to prior art, the utility model significantly can promote reaction efficiency, reduces the energy consumption of system, reduces equipment investment, has the advantages that investment is little, applied widely.
Tower body is respectively arranged with slurries and adds entrance, water supplement port, add entrance by slurries, water supplement port can realize slurries and water supplement, ensure continuous operation of the present utility model, meet the needs of industrial continuous smoke treatment.Smoke inlet is connected the horizontal plane at place with tower body higher than it away from one end of tower body, smoke inlet is axially 0 ~ 20 ° with the angle of horizontal plane.Adopt this structure, flue gas enters in tower body by smoke inlet along the direction under being tilted to, and flue gas stream can be made to be evenly distributed.The mist eliminator flushing device that demister comprises demister, matches with demister, demister is positioned at above spray equipment, removes the water smoke in flue gas by demister.Demister is the one in deflector type demister, Flat defroster, ridge type demister, and further, demister adopts polypropylene material or glass-reinforced plastic material to be prepared from.Oxidative system is torch-type oxidative system or pulse suspension forced oxidation system.
Spraying layer comprises reducing spray supervisor, reducing spray arm, the nozzle be arranged on reducing spray supervisor, nozzle is separately positioned on reducing spray supervisor, reducing spray arm, and between nozzle and reducing spray and be responsible for, nozzle and reducing spray and to adopt Flange joint between arm respectively or be threaded or be intertwined and connected.Spray equipment is made up of 2 ~ 6 layers of spraying layer, and have the two-layer spraying layer that can spray different slurries granularity at least, namely spraying layer can spray at least two kinds of varigrained slurries, and the material of nozzle can be carborundum.In prior art, sprinkling equipment adopts nozzle of the same race usually, it only can spray the serous granule of single diameter, the slurries of such ejection and the contact area of flue gas limited, the spray equipment structure of the employing Multi-layer sprinkling layer composition innovated in the utility model, every layer of spraying layer can spray the slurries of Monosized powder, and the slurries granularity having at least two-layer spraying layer to spray is different.Bottom-up ground floor spraying layer is provided with and can sprays the nozzle that slurries granularity is 50 microns ~ 200 microns, bottom-up second layer spraying layer is provided with and can sprays the nozzle that slurries granularity is 100 microns ~ 500 microns, bottom-up third layer spraying layer and above spraying layer are provided with and can spray the nozzle that slurries granularity is 1000 microns ~ 2500 microns.Adopt this structure, the ground floor spraying layer counted from lower to upper, the grain graininess of the sprayed slurry of the nozzle generation that this spraying layer is used is 50 microns ~ 200 microns; Second layer spraying layer from lower to upper, the grain graininess of the sprayed slurry of the nozzle generation that this spraying layer is used is 100 microns ~ 500 microns; Third layer from lower to upper and above spraying layer, the grain graininess of the sprayed slurry of the nozzle generation that these spraying layers are used is 1000 microns ~ 2500 microns.The ground floor spraying layer counted from lower to upper can adopt pressure to be 0.15MPa ~ 0.5MPa atomizer or adopt 0.2MPa ~ 0.6MPa compressed air to carry out the nozzle be atomized, loop slurry is atomized into 50 microns ~ 200 microns, or adopt 0.2MPa ~ 0.6MPa compressed air/employing 0.2MPa ~ 0.6MPa saturated vapor to carry out the nozzle of ultrasonic atomization, loop slurry is atomized into 50 microns ~ 200 microns.Second layer spraying layer from lower to upper can adopt pressure to be that slurry spraying is become 100 microns ~ 500 microns by the nozzle that 0.15MPa ~ 0.5MPa atomizer or employing 0.2MPa ~ 0.6MPa compressed air carry out being atomized.Third layer spraying layer from lower to upper and pressure can be adopted for 0.15MPa ~ 0.5MPa atomizer with upper strata or adopt 0.2MPa ~ 0.6MPa compressed air to carry out the nozzle be atomized, becomes 1000 microns ~ 2500 microns by slurry spraying.
In the utility model, by the slurries of nozzle ejection different-grain diameter, form three-dimensional slurries spraying system, greatly can increase the mass transfer area of slurries, improve mass-transfer efficiency.Under the operating mode of identical liquid-gas ratio, by the spray equipment in the utility model, can reach higher desulfuration efficiency, desulfuration efficiency up to more than 98%, can be suitable for the upgrading transformation up to standard of existing desulfurizer and the design of high performance counter current spray desulfuration absorbing tower.
Further, the inner wall anti-corrosive layer of tower body adopts glass flake or rubber or polypropylene material to be prepared from, and adopts this structure, can increase service life of the present utility model, reduce the use cost of equipment.
Compared with prior art, the utility model adopts the design with the spraying layer of different sprayed slurry grain graininess, can under the operating mode of identical liquid-gas ratio, reach higher desulfuration efficiency, desulfuration efficiency up to more than 98%, can pass through the improvement to absorption tower structure simultaneously, desulfuration efficiency can be significantly improved, reduce equipment cost, increase mass transfer area and mass transfer effect, improve SO
2absorption efficiency.The utility model is reasonable in design, and cost is low, and mass transfer effect is good, absorptivity is high, the upgrading transformation up to standard of existing desulfurizer and the design of high performance counter current spray desulfuration absorbing tower can be applicable to, there is important economic worth and social benefit, be worth large-scale promotion, application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the close-up schematic view of spraying layer in Fig. 1.
Mark in figure: 1 is tower body, and 2 is recycle slurry liquid pool, and 3 is oxidative system, 4 is slurry circulating pump, and 5 is smoke inlet, and 6 is neat stress outlet, 7 is spray equipment, and 8 is spraying layer, and 9 is agitator, 10 add entrance for slurries, and 11 is water supplement port, and 12 is demister, 13 is mist eliminator flushing device, 14 is reducing spray supervisor, and 15 is reducing spray arm, and 16 is nozzle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
As shown in the figure, the utility model provides a kind of high-efficiency desulfurization absorption tower, and it adopts countercurrent spray, can be used for efficient lime stone/lime-gypsum wet flue gas desulfurizing.This absorption tower comprises recycle slurry liquid pool, tower body, oxidative system, slurry circulating pump, the excavationg pump be arranged on recycle slurry liquid pool.Wherein, recycle slurry liquid pool is positioned at the bottom on absorption tower, forms the agent structure on absorption tower.In the present embodiment, oxidative system adopts spray gun forced oxidation system, and excavationg pump is connected with recycle slurry liquid pool, for discharging the slurries in recycle slurry liquid pool.Be provided with agitator in recycle slurry liquid pool, oxidative system is connected with recycle slurry liquid pool, and slurry circulating pump is connected with recycle slurry liquid pool, spraying layer respectively.
The bottom of tower body is provided with smoke inlet, the top of tower body is provided with neat stress outlet, smoke inlet away from one end of tower body higher than place, the junction horizontal plane of itself and tower body, smoke inlet is axial is 0 ~ 20 ° with the angle of horizontal plane, neat stress outlet is Horizontal Exit or tower top vertical outlet, adopt this structure, better flue gas stream dispersion effect can be reached.The inner wall anti-corrosive layer of tower body adopts glass flake or rubber or polypropylene material to be prepared from, and slurries tower body is also respectively arranged with for supplementary slurries add entrance, water supplement port for supplementing water.The inner one end near neat stress outlet of tower body is disposed with demister, spray equipment from top to bottom, and spray equipment is made up of several spraying layers.The mist eliminator flushing device that demister comprises demister, matches with demister, demister is positioned at above spray equipment.In the present embodiment, the one in the deflector type demister that demister adopts polypropylene material or glass-reinforced plastic material to prepare, Flat defroster, ridge type demister.Spraying layer comprises reducing spray supervisor, reducing spray arm, the nozzle be arranged on reducing spray supervisor, nozzle is separately positioned on reducing spray supervisor, reducing spray arm, and between nozzle and reducing spray and be responsible for, nozzle and reducing spray and to adopt Flange joint between arm respectively or be threaded or be intertwined and connected.Spraying layer preferably adopts glass reinforced plastic pipe or inside and outside line with rubber carbon steel pipe to be prepared from.
In the present embodiment, spray equipment is made up of 3 ~ 6 layers of spraying layer.Bottom-up ground floor spraying layer is provided with and can sprays the nozzle that slurries granularity is 50 microns ~ 200 microns, bottom-up second layer spraying layer is provided with and can sprays the nozzle that slurries granularity is 100 microns ~ 500 microns, bottom-up third layer and above spraying layer are provided with and can spray the nozzle that slurries granularity is 1000 microns ~ 2500 microns.Adopt this structure, the particle diameter of the slurry spraying of the nozzle ejection of the ground floor spraying layer counted from lower to upper is 50 microns ~ 200 microns; The particle diameter of the slurry spraying of the nozzle ejection that second layer spraying layer is is 50 microns ~ 200 microns; The particle diameter of the slurry spraying of the nozzle ejection of third layer and above spraying layer is 1000 microns ~ 2500 microns.The mode that the atomization of nozzle adopts can be slurries pressurizing atomizing or add compressed air atomization or ultrasonic atomization.
During utility model works, from coal-burning power plant or Industrial Boiler or Industrial Stoves produce containing SO
2flue gas enter absorption tower from the smoke inlet on the absorption tower being placed in middle and lower part, absorption tower, from top to bottom with the gypsum loop slurry counter current contacting sprayed from nozzle, SO
2entered in loop slurry by washing absorption Deng acid contaminant.Absorb SO
2loop slurry drop in the recycle slurry liquid pool bottom absorption tower, under the air effect that oxidative system blasts to recycle slurry liquid pool, by absorption reaction generate calcium sulfite carry out forced oxidation, generate stable calcium sulphate dihydrate, i.e. gypsum.In gas cleaning process, the slurries that small part contains gypsum are extracted out by the excavationg pump be connected with recycle slurry liquid pool, send into slurries and concentrate and dewatering slurries system; And most of slurries squeeze into each spraying layer by slurry circulating pump, carry out circulated sprinkling absorption.Containing SO
2flue gas after washing, purifying, the drop in flue gas removed by the demister through being arranged at top, absorption tower, discharges, complete sweetening process from the neat stress outlet absorbing tower top.
The spraying layer that the utility model adopts the nozzle of different-diameter to be formed, it can significantly improve mass transfer area, improves SO
2absorptivity.Prove by experiment, under identical liquid-gas ratio condition, compared with existing absorption tower, the utility model effectively can improve the absorption rate of sprayed slurry, significantly promotes SO
2absorption efficiency.Desulfuration efficiency of the present utility model can up to more than 98%, significantly due to prior art.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a high-efficiency desulfurization absorption tower, is characterized in that, comprises recycle slurry liquid pool, tower body, oxidative system, the slurry circulating pump be arranged on recycle slurry liquid pool;
The bottom of described tower body is provided with smoke inlet, and the top of described tower body is provided with neat stress outlet, and the inner one end near neat stress outlet of described tower body is provided with demister, spray equipment, and described spray equipment is made up of several spraying layers;
Be provided with agitator in described recycle slurry liquid pool, described oxidative system is connected with recycle slurry liquid pool, and described slurry circulating pump is connected with recycle slurry liquid pool, spraying layer respectively.
2. high-efficiency desulfurization absorption tower according to claim 1, is characterized in that, described tower body is respectively arranged with slurries and adds entrance, water supplement port.
3. high-efficiency desulfurization absorption tower according to claim 1, is characterized in that, described smoke inlet is away from one end of tower body higher than place, the junction horizontal plane of itself and tower body, and described smoke inlet is axially 0 ~ 20 ° with the angle of horizontal plane.
4. high-efficiency desulfurization absorption tower according to claim 1, it is characterized in that, the mist eliminator flushing device that described demister comprises demister, matches with demister, described demister is positioned at above spray equipment.
5. high-efficiency desulfurization absorption tower according to claim 4, it is characterized in that, described demister is the one in deflector type demister, Flat defroster, ridge type demister.
6. high-efficiency desulfurization absorption tower according to claim 1, is characterized in that, also comprise the excavationg pump discharging recycle slurry liquid pool entoplasm liquid.
7. high-efficiency desulfurization absorption tower according to claim 1, it is characterized in that, described spraying layer comprises reducing spray supervisor, reducing spray arm, the nozzle be arranged on reducing spray supervisor, and described nozzle is separately positioned on reducing spray supervisor, reducing spray arm.
8. high-efficiency desulfurization absorption tower according to claim 7, it is characterized in that, described nozzle and reducing adopt Flange joint between spraying and being responsible for or are threaded or are intertwined and connected, and described nozzle and reducing spray and to adopt Flange joint between arm or be threaded or be intertwined and connected.
9. high-efficiency desulfurization absorption tower according to any one of claim 1-8, is characterized in that, described spray equipment is made up of 2 ~ 6 layers of spraying layer, has the two-layer spraying layer that can spray different slurries granularity at least.
10. high-efficiency desulfurization absorption tower according to claim 9, it is characterized in that, described spray equipment is made up of 2 ~ 6 layers of spraying layer, bottom-up ground floor spraying layer is provided with and can sprays the nozzle that slurries granularity is 50 microns ~ 200 microns, bottom-up second layer spraying layer is provided with and can sprays the nozzle that slurries granularity is 100 microns ~ 500 microns, bottom-up third layer spraying layer and above spraying layer are provided with and can spray the nozzle that slurries granularity is 1000 microns ~ 2500 microns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420657810.XU CN204193780U (en) | 2014-11-06 | 2014-11-06 | A kind of high-efficiency desulfurization absorption tower |
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| CN201420657810.XU CN204193780U (en) | 2014-11-06 | 2014-11-06 | A kind of high-efficiency desulfurization absorption tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984657A (en) * | 2015-06-29 | 2015-10-21 | 苏跃进 | Flue gas desulfurization method and flue gas desulfurization device |
| CN107149860A (en) * | 2016-12-08 | 2017-09-12 | 湖北金汉江精制棉有限公司 | Bleaching chemical cotton exhaust gas processing device |
| CN108355459A (en) * | 2017-12-08 | 2018-08-03 | 中国电子科技集团公司第十三研究所 | The processing unit of gas soot dust granule tail gas |
| CN111569620A (en) * | 2020-05-19 | 2020-08-25 | 江苏科技大学 | Design method for spraying layer of spray system of desulfurization tower |
-
2014
- 2014-11-06 CN CN201420657810.XU patent/CN204193780U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984657A (en) * | 2015-06-29 | 2015-10-21 | 苏跃进 | Flue gas desulfurization method and flue gas desulfurization device |
| CN107149860A (en) * | 2016-12-08 | 2017-09-12 | 湖北金汉江精制棉有限公司 | Bleaching chemical cotton exhaust gas processing device |
| CN108355459A (en) * | 2017-12-08 | 2018-08-03 | 中国电子科技集团公司第十三研究所 | The processing unit of gas soot dust granule tail gas |
| CN111569620A (en) * | 2020-05-19 | 2020-08-25 | 江苏科技大学 | Design method for spraying layer of spray system of desulfurization tower |
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