CN202778267U - High-quality spray absorption tower for wet flue gas desulfurization - Google Patents
High-quality spray absorption tower for wet flue gas desulfurization Download PDFInfo
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- CN202778267U CN202778267U CN 201220392579 CN201220392579U CN202778267U CN 202778267 U CN202778267 U CN 202778267U CN 201220392579 CN201220392579 CN 201220392579 CN 201220392579 U CN201220392579 U CN 201220392579U CN 202778267 U CN202778267 U CN 202778267U
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Abstract
The utility model discloses a high-quality spray absorption tower for wet flue gas desulfurization. The absorption tower comprises a spray tower cylinder body which is provided with a flue gas inlet channel and a flue gas outlet channel, wherein a perforated screen plate, flue gas redistribution rings, slurry spray devices, a demister and a rotational flow plate device are arranged horizontally from bottom to top between the flue gas inlet channel and the flue gas outlet channel; inner side edges of the flue gas redistribution rings are in an undulate or serrated shape; and the rotational flow plate device comprises a plurality of evenly-distributed independent rotational flow plate separators. According to the high-quality spray absorption tower for wet flue gas desulfurization, the problem of no flue gas flowing above the absorption tower close to the flue gas inlet section is solved, the phenomenon of easy crystallization and scaling of the area is overcame, the gas-liquid contact area is maximized, the absorption reaction is effective, and the absorption tower is applicable to desulfurization of flue gas with high sulfur dioxide content. 'Fog-drop particles' carried in the flue gas are eliminated to the maximum extent, the chimney 'rain' phenomena are reduced greatly, and the content of the fog-drop particles can reach 60 milligrams/nanometer<3>. The absorption tower is wide in applicable range, and can be used for wet flue gas desulfurization in a double-alkali method, an acetylene sludge method, a lime-gypsum method and the like.
Description
Technical field
The utility model relates to the spray absorber in the wet process of FGD equipment, refers to particularly a kind of high-quality wet process of FGD spray absorber.
Background technology
Acid rain problem is one of global environmental problem of face of mankind nowadays, the coal-fired oxysulfide SO that produces
2With nitrogen oxide NO
xPollution is the main protozoa of China's acid rain.Because the energy resource structure of China is take coal as main, in China's power industry, thermoelectricity accounts for about 70% of gross generation always, and coal-fired power plant is the first pollution sources of China's atmosphere pollution.Power-plant flue gas polluted to control be the requirement that realizes economic, society, harmonious development, also be performance coal in China superiority of reserves, realize the requirement of coal-burning power plant self sustainable development.It is several that tradition coal fired power plant flue gas desulfurization technique generally is divided into wet method, semidry method and dry desulfurization etc., and wherein Wet Flue Gas Desulfurization Technique is used the most extensively.In Wet Flue Gas Desulfurization Technique, be that the sulfur dioxide in the flue gas is directly contacted with vaporific slurries, vaporific slurries and sulfur dioxide are reacted be absorbed, thereby reach the purpose of desulfurization.
At present, the wet process of FGD equipment in industrial application mainly is spray absorber.It is more single that original spray-absorption tower technology has, and internal structure is simple, except spraying layer, can improve the device of smoke desulfurization efficiency without other; What have has the device that slurries are reallocated or held liquid layer in the spray section increase, to improve desulfuration efficiency, has certain effect.Usually single spray column does not satisfy environmental requirement substantially under the sulphur coal situation.The sulfur-bearing quality of the coal combustion that adopts along with thermal power plant improves gradually, and country is to the enforcement of the new discharging environmental protection standard " fossil-fuel power plant atmospheric pollutant emission standard GB13223-2011 " of thermal power plant, and the desulfurizer of original employing spray column technology all needs to transform basically puies forward effect.But single spray column technology is difficult to satisfy improved environmental requirement.For steel industry or other industry, because sulfur content is lower, adopt comparatively single spray column technology substantially can satisfy environmental requirement, consider but may improve requirement to the desulfurization standard of other industry for following country, also need the development of new desulfur technology to tackle the challenge of following environmental protection standard.Desulfurization is transformed the problem that need to face except improving desulfuration efficiency, satisfying new standard requires; Also to taking cost into account, reduce transformation amount, reduce improvement cost on the basis of original desulfurizer.
Summary of the invention
The purpose of this utility model is exactly that a kind of desulfuration efficiency height, the effective high-quality wet process of FGD spray absorber of demist will be provided.
For achieving the above object, the high-quality wet process of FGD spray absorber that the utility model is designed, comprise the spray column cylindrical shell, the bottom of described spray column cylindrical shell and top are respectively arranged with gas approach passage and exhanst gas outlet passage, be horizontally disposed with slurries spray equipment and demister from bottom to top between described gas approach passage and the exhanst gas outlet passage, its special character is: be horizontally disposed with porous sieve plate between described slurries spray equipment and the gas approach passage; Be provided with again distribution rings of flue gas on the spray column cylinder inboard wall of described slurries spray equipment below, described flue gas is inside edge undulate or the zigzag of distribution rings again; Be horizontally disposed with rotational flow plate device between described demister and the exhanst gas outlet passage, described rotational flow plate device is by uniform the combining of a plurality of independent spiral board separators.
Further, described gas approach passage top and spray column cylindrical shell joint is chamfering or arc seamlessly transits structure, described gas approach passage bottom and spray column cylindrical shell joint are horizontal by 10 ~ 20 ° the gradient.Like this, nearly gas approach Duan Buhui forms " dead angle " in the spray column, avoids crystallization herein or fouling.
Further, described flue gas again distribution rings is the hollow disc structure, and the barrel angle of its shaft section and spray column cylindrical shell is 30 ~ 60 °.Like this, the below flue gas averages distribution again through herein, fully contacts with sprayed slurry, has improved the gas-liquid contact area, reaches to improve the desulfuration efficiency purpose.
Further, described flue gas again distribution rings be the associative ring that plain steel pastes the lining alloy face.Like this, flue gas is distribution rings lightweight again, and price is cheap with respect to the steel alloy material; Under the identical spray flux, this device can improve desulfuration efficiency 0.3 ~ 1%.
Further, sieve aperture ovalize on the described porous sieve plate, the hole area sum of described oval sieve aperture accounts for 60 ~ 70% of the porous sieve plate gross area.Like this, flue gas is evenly distributed, and flue gas makes sprayed slurry be suspended in sieve plate top by sieve aperture on the porous sieve plate and spray column top sprayed slurry counter current contacting, forms the certain altitude fluid column, fully haptoreaction.
Further, the diameter of each independent spiral board separator is 1000 ~ 1500mm on the described rotational flow plate device.Like this, can further process the mist droplet that carries through in the flue gas after the demister.Adopt independent little spiral board to be set up in parallel, form large drop and fall, be not subjected to the impact of flue gas.
Further, described slurries spray equipment is provided with 3 ~ 4 layers, and described flue gas again distribution rings also is provided with 3 ~ 4 roads correspondingly.Like this, further optimized the desulfurized effect of desulfurization spray absorber, also can select to increase or the minimizing slurries spray equipment number of plies according to smoke components simultaneously.
The utility model has the advantage of: solved the problem that flows near smoke inlet section top smokeless in the tower, having overcome should zone easy crystallization and the phenomenon of fouling.With respect to general spray column, because flue gas reaches 16m/s in rotational flow plate device middle punch high cycle speed, can play souring, be difficult for stopping up, maintenance workload is little; With respect to general spray column, realized the maximization of gas-liquid contact area, make absorption reaction more effective, desulfuration efficiency is higher, is more applicable for the high flue gas desulfurization of content of sulfur dioxide; With respect to general spray column, removed largely " the droplet particle " that carry in the flue gas, greatly reduced the chimney phenomenon of " raining ", its droplet granule content can reach 60mg/Nm3.This device can be widely used in multiple flue gas desulfur device, as at two alkaline process, carbide slag method, lime stone-gypsum method and ammonia process, can be used for simultaneously multiple industry flue gas desulfurization, such as industry fields such as sintering plant flue gas desulfurization, flue gas desulphurization, cement plant flue gas desulfurizations.Under identical working condition, its gas load can improve more than 50%, and the combination property such as pressure head reduces more than 20%, and it has the gas load height, operating flexibility is wide, service cycle is long, simple in structure.
Description of drawings
Fig. 1 is a kind of structural representation of high-quality wet process of FGD spray absorber.
Fig. 2 is the plan structure schematic diagram of porous sieve plate among Fig. 1.
Fig. 3 be among Fig. 1 rotational flow plate device look up structural representation.
Fig. 4 is the flue gas plan structure schematic diagram of distribution rings again among Fig. 1.
Among the figure: gas approach passage 1, porous sieve plate 2, flue gas be distribution rings 3, slurries spray equipment 4, demister 5, rotational flow plate device 6, exhanst gas outlet passage 7, spray column cylindrical shell 8 again.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
High-quality wet process of FGD spray absorber shown in the figure, comprise spray column cylindrical shell 8, the bottom of spray column cylindrical shell 8 and top are respectively arranged with gas approach passage 1 and exhanst gas outlet passage 7, gas approach passage 1 top and spray column cylindrical shell 8 joints are chamfering or arc seamlessly transits structure, crystallization herein or fouling are avoided horizontal by 10 ~ 20 ° the gradient in gas approach passage 1 bottom and spray column cylindrical shell 8 joints.Slurries spray equipment 4 and demister 5 have been horizontally disposed with between gas approach passage 1 and the exhanst gas outlet passage 7 from bottom to top, be horizontally disposed with porous sieve plate 2 between slurries spray equipment 4 and the gas approach passage 1, its sieve aperture ovalize, the hole area sum of oval sieve aperture accounts for 60 ~ 70% of porous sieve plate 2 gross areas, flue gas is by sieve aperture on the porous sieve plate and spray column top sprayed slurry counter current contacting, make sprayed slurry be suspended in sieve plate top, form the certain altitude fluid column, fully haptoreaction.Be provided with again distribution rings 3 of flue gas on spray column cylindrical shell 8 inwalls of slurries spray equipment 4 belows, flue gas again distribution rings 3 is the associative ring of plain steel subsides lining alloy face, its material also can be selected heatproof, the nonmetallic materials of corrosion resistant, such as unsaturated polyester, fiberglass, polypropylene, haloflex, polytetrafluoroethylene (PTFE) etc., it is the hollow disc structure, inside edge undulate or zigzag, the barrel angle of shaft section and spray column cylindrical shell 8 is 30 ~ 60 °, the below flue gas averages distribution again through herein, fully contact with sprayed slurry, improved the gas-liquid contact area, reached and improve the desulfuration efficiency purpose.Be horizontally disposed with rotational flow plate device 6 between demister 5 and the exhanst gas outlet passage 7, rotational flow plate device 6 is by uniform the combining of a plurality of independent spiral board separators, the material selection heatproof of each independent spiral board separator, the nonmetallic materials of corrosion resistant, such as unsaturated polyester, fiberglass, polypropylene, haloflex, polytetrafluoroethylene (PTFE) etc., its diameter is 1000 ~ 1500mm, further processes the mist droplet that carries through in the flue gas after the demister.Adopt independent little spiral board to be set up in parallel, form large drop and fall, be not subjected to the impact of flue gas.Slurries spray equipment 4 is provided with 3 ~ 4 layers, and flue gas again distribution rings 3 also is provided with 3 ~ 4 roads correspondingly, has further optimized the desulfurized effect of desulfurization spray absorber.
The high-quality wet process of FGD spray absorber of the design can be according to the situation of want processed gas when industrial application, increase and decrease slurries spray equipment 4 and flue gas be the number of plies of distribution rings 3 again, simultaneously, the aperture of the oval sieve aperture on the porous sieve plate 2 and quantity also can be according to the situation adjustment of gas to be desulfurization.
The operation principle of the high-quality wet process of FGD spray absorber of the design is: pending flue gas enters spray absorber after gas approach passage 1 flow field is optimized, be evenly distributed through porous sieve plate 2 flue gases, and at porous sieve plate 2 tops formation certain altitude fluid column, after the abundant haptoreaction of spray absorber top sprayed slurry, the vaporific slurries counter current contacting that the flue gas continuation is risen and top slurries spray equipment 4 sprays, and through flue gas again distribution rings 3 again optimizes the distribution after, through the demister 5 preliminary droplet particles of removing slightly large particle diameter, then enter rotational flow plate device 6, after further removing the droplet particle of tiny particle diameter, discharge spray column cylindrical shell 8 by exhanst gas outlet passage 7 at last.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment does.
Claims (10)
1. high-quality wet process of FGD spray absorber, comprise spray column cylindrical shell (8), the bottom of described spray column cylindrical shell (8) and top are respectively arranged with gas approach passage (1) and exhanst gas outlet passage (7), be horizontally disposed with slurries spray equipment (4) and demister (5) between described gas approach passage (1) and the exhanst gas outlet passage (7) from bottom to top, it is characterized in that: be horizontally disposed with porous sieve plate (2) between described slurries spray equipment (4) and the gas approach passage (1); Be provided with again distribution rings (3) of flue gas on spray column cylindrical shell (8) inwall of described slurries spray equipment (4) below, described flue gas is inside edge undulate or the zigzag of distribution rings (3) again; Be horizontally disposed with rotational flow plate device (6) between described demister (5) and the exhanst gas outlet passage (7), described rotational flow plate device (6) is by uniform the combining of a plurality of independent spiral board separators.
2. high-quality wet process of FGD spray absorber according to claim 1, it is characterized in that: described gas approach passage (1) top and spray column cylindrical shell (8) joint is chamfering or arc seamlessly transits structure, described gas approach passage (1) bottom and spray column cylindrical shell (8) joint are horizontal by 10 ~ 20 ° the gradient.
3. high-quality wet process of FGD spray absorber according to claim 1 and 2, it is characterized in that: described flue gas again distribution rings (3) is the hollow disc structure, and the barrel angle of its shaft section and spray column cylindrical shell (8) is 30 ~ 60 °.
4. high-quality wet process of FGD spray absorber according to claim 3 is characterized in that: described flue gas again distribution rings (3) is the associative ring that plain steel pastes the lining alloy face.
5. high-quality wet process of FGD spray absorber according to claim 1 and 2 is characterized in that: the upper sieve aperture ovalize of described porous sieve plate (2), the hole area sum of described oval sieve aperture accounts for 60 ~ 70% of porous sieve plate (2) gross area.
6. high-quality wet process of FGD spray absorber according to claim 3 is characterized in that: the upper sieve aperture ovalize of described porous sieve plate (2), the hole area sum of described oval sieve aperture accounts for 60 ~ 70% of porous sieve plate (2) gross area.
7. high-quality wet process of FGD spray absorber according to claim 1 and 2 is characterized in that: the diameter of upper each the independent spiral board separator of described rotational flow plate device (6) is 1000 ~ 1500mm.
8. high-quality wet process of FGD spray absorber according to claim 3 is characterized in that: the diameter of upper each the independent spiral board separator of described rotational flow plate device (6) is 1000 ~ 1500mm.
9. high-quality wet process of FGD spray absorber according to claim 1 and 2, it is characterized in that: described slurries spray equipment (4) is provided with 3 ~ 4 layers, and described flue gas again distribution rings (3) also is provided with 3 ~ 4 roads correspondingly.
10. high-quality wet process of FGD spray absorber according to claim 3, it is characterized in that: described slurries spray equipment (4) is provided with 3 ~ 4 layers, and described flue gas again distribution rings (3) also is provided with 3 ~ 4 roads correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392579 CN202778267U (en) | 2012-08-09 | 2012-08-09 | High-quality spray absorption tower for wet flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392579 CN202778267U (en) | 2012-08-09 | 2012-08-09 | High-quality spray absorption tower for wet flue gas desulfurization |
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| CN202778267U true CN202778267U (en) | 2013-03-13 |
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| CN 201220392579 Withdrawn - After Issue CN202778267U (en) | 2012-08-09 | 2012-08-09 | High-quality spray absorption tower for wet flue gas desulfurization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764582A (en) * | 2012-08-09 | 2012-11-07 | 武汉钢铁(集团)公司 | High-quality spray absorber for wet flue gas desulfurization |
| CN104874252A (en) * | 2015-05-18 | 2015-09-02 | 田鹏程 | Multistage multi-cyclone demisting and dedusting device |
| CN105617852A (en) * | 2016-03-28 | 2016-06-01 | 上海龙净环保科技工程有限公司 | Desulfurization and dedusting absorption tower with porous current equalizer |
-
2012
- 2012-08-09 CN CN 201220392579 patent/CN202778267U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764582A (en) * | 2012-08-09 | 2012-11-07 | 武汉钢铁(集团)公司 | High-quality spray absorber for wet flue gas desulfurization |
| CN102764582B (en) * | 2012-08-09 | 2015-03-25 | 武汉钢铁(集团)公司 | Spray absorber for wet flue gas desulfurization |
| CN104874252A (en) * | 2015-05-18 | 2015-09-02 | 田鹏程 | Multistage multi-cyclone demisting and dedusting device |
| CN105617852A (en) * | 2016-03-28 | 2016-06-01 | 上海龙净环保科技工程有限公司 | Desulfurization and dedusting absorption tower with porous current equalizer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20150325 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20150325 |
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| RGAV | Abandon patent right to avoid regrant |