CN210356675U - SOx/NOx control reaction unit for combustion boiler - Google Patents
SOx/NOx control reaction unit for combustion boiler Download PDFInfo
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- CN210356675U CN210356675U CN201921212898.3U CN201921212898U CN210356675U CN 210356675 U CN210356675 U CN 210356675U CN 201921212898 U CN201921212898 U CN 201921212898U CN 210356675 U CN210356675 U CN 210356675U
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- desulfurization
- combustion boiler
- flue gas
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- spray absorber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model discloses a SOx/NOx control reaction unit for combustion boiler burns sulfur dioxide (SO) in the flue gas2) Is absorbed to form Na when meeting sodium hydroxide slurry2SO3，Na2SO3Has reducing property, and can further react with Nitrogen Oxide (NO)x) The reaction realizes the synchronous operation of desulfurization and denitrification, reduces the using amount of reducing agents, reduces the treatment cost, has obvious environmental protection effect, and can be widely applied to the wet desulfurization and denitrification of mixed waste gas (flue gas). During the dispersion reaction, the fixedly arranged flow guide device and the rotatably arranged atomizer are matched with each other, so that the sodium hydroxide slurry can be atomized and dispersed into smaller particles, the combustion flue gas and the atomized particles are fully contacted and mixed, and the maximization of the reaction is realized; and the shape that reaction unit lower part inwards contracts sets up, avoids the sodium hydroxide thick liquid because centrifugal force outwards diffuses, and forms the effect of gathering together for the contact time of burning flue gas and sodium hydroxide thick liquid is longer.
Description
Technical Field
The utility model relates to a waste gas purification equipment technical field especially relates to a SOx/NOx control reaction unit for combustion boiler.
Background
With the rapid development of economy in China, the discharge amount of sulfur dioxide and nitrogen oxide is continuously increased, the acid rain amount caused by the sulfur dioxide and the nitrogen oxide accounts for about 80% of the total acid rain amount, the understanding of harm of the sulfur dioxide and the nitrogen oxide is continuously improved, and the national high importance on environmental protection is attached, so that the desulfurization and denitrification become the current main task.
Although the desulfurization and denitrification technology is mature, the following defects exist: on one hand, most of the processes of removing sulfur and nitrate in industrial flue gas are carried out by a spraying method, sulfur oxides and the like in the flue gas are removed by using alkaline liquor, but because a large amount of dust and large-particle impurities exist in the flue gas, the effect of the reaction of the spraying liquor and the flue gas is influenced. On the other hand, the existing desulfurization and denitrification processes are two independent treatment processes, namely, the desulfurization operation and the denitrification operation of the combustion flue gas are respectively completed in different devices, and in the desulfurization and denitrification processes, a large amount of absorption materials and reducing agents are needed, so that the equipment is huge, the structure is complex, and the problems of various reaction species and large loss exist.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists in the above-mentioned technique, the utility model provides a SOx/NOx control reaction unit for combustion boiler.
The utility model provides a technical scheme that its technical problem adopted is:
a desulfurization and denitrification reaction device for a combustion boiler comprises: the first dust remover is connected with the combustion boiler through a smoke exhaust pipeline so as to carry out preliminary filtration and dust removal on combustion flue gas; the spray absorber is communicated with the first dust remover through an air inlet pipeline and is used for carrying out desulfurization and denitrification operation on the combustion flue gas; a slurry supply system which is installed on the upper part of the spray absorber and sprays atomized slurry into the spray absorber; the gas distribution system is positioned at the upper part of the spray absorber and is communicated with one end of the outlet of the gas inlet pipeline so as to be used for feeding the combustion flue gas subjected to preliminary dust removal into the spray absorber; the second dust remover is communicated with the spray absorber through an exhaust pipeline and is used for carrying out secondary dust removal on the desulfurized and denitrated combustion flue gas;
the slurry supply system comprises a supply source and a liquid distribution pipeline extending outwards from the supply source, a plurality of liquid distribution manifolds vertically arranged with the liquid distribution pipeline extend out of the liquid distribution pipeline, and the lower ends of the liquid distribution manifolds are connected with an atomizer; the supply source stores calcium hydroxide slurry;
the air distribution system comprises a horizontal main pipe vertically connected with the air inlet pipeline, a plurality of air distribution manifolds vertical to the horizontal main pipe extend out of the horizontal main pipe, and the lower ends of the air distribution manifolds are connected with a flow guide device; the flow guide devices and the atomizers are arranged in a one-to-one correspondence manner to form a reaction unit together.
Preferably, a hopper is formed at the lower part of the spray absorber, and a discharge port is formed on the hopper.
Preferably, the air outlet end of the second dust remover is connected with an external discharge pipeline, and the external discharge pipeline discharges the purified combustion flue gas into the atmosphere.
Preferably, the first dust remover is an electrostatic dust remover, and the second dust remover is a bag-type dust remover.
Preferably, the main body of the spray absorber is a cylindrical sealed container with a conical containing hopper at the lower part, and the diameter of the cylindrical sealed container is 15-20 meters.
Preferably, the reaction units are a plurality of reaction units which are uniformly distributed on the upper end cover of the spray absorber, and the atomizer is a rotary atomizer, namely, the slurry is smashed and atomized into fine particles by utilizing the rotary action.
Preferably, the outside of the reaction unit is provided with a flow guide device, and the atomizer is positioned inside the flow guide device and driven by a rotary driving mechanism; the flow guide device comprises a cylindrical guide sleeve positioned at the upper part and a conical guide sleeve connected at the lower part of the cylindrical guide sleeve; the atomizer includes the special-shaped axle, and the fixed surface of special-shaped axle installs a plurality of evenly distributed's first flabellum, and the outer lane fixed mounting of first flabellum has rotatory sleeve, and the fixed surface of rotatory sleeve installs a plurality of evenly distributed's second flabellum, is formed with inboard atomizing passageway between special-shaped axle and the rotatory sleeve, is formed with outside atomizing passageway between rotatory sleeve and the guiding device.
Preferably, the first fan blade plate and the second fan blade plate are arranged in an inclined mode, the inclined directions of the first fan blade plate and the second fan blade plate are opposite, and the inclined angles of the first fan blade plate, the second fan blade plate and the special-shaped shaft axis are 25-35 degrees; wherein, the number of the first fan blade plates is 10-15, and the number of the second fan blade plates is 20-30.
Preferably, a gap of 2-8 mm is formed between the flow guide device and the second fan blade plate.
Preferably, the rotating sleeve comprises a cylindrical rotating guide sleeve positioned at the upper part and a conical rotating guide sleeve connected to the lower part of the cylindrical rotating guide sleeve; the special-shaped shaft comprises a cylindrical shaft section connected with the rotary driving mechanism and a conical shaft section integrally formed with the cylindrical shaft section; the inner side atomizing channel and the outer side atomizing channel are both channels with annular sections, the sizes of the cross sections of the inner side atomizing channel are the same, and the sizes of the cross sections of the outer side atomizing channel are the same.
Compared with the prior art, the utility model, its beneficial effect is: the utility model provides a SOx/NOx control reaction unit for combustion boiler, burning flue gas pass through gas distribution manifold and get into inboard atomizing passageway, outside atomizing passageway, and the sodium hydroxide thick liquid passes through gas distribution manifold and gets into corresponding inboard atomizing passageway, outside atomizing passageway, and the special-shaped axle of rotary driving mechanism drive drives the atomizer and rotates at a high speed, atomizes the high-efficient of sodium hydroxide thick liquid and carries out the intensive mixing reaction with burning flue gas, in the burning flue gasSulfur dioxide (SO) of2) Is absorbed to form Na when meeting sodium hydroxide slurry2SO3，Na2SO3Has reducing property, and can further react with Nitrogen Oxide (NO)x) The reaction realizes the synchronous operation of desulfurization and denitrification, reduces the using amount of reducing agents, reduces the treatment cost, has obvious environmental protection effect, and can be widely applied to the wet desulfurization and denitrification of mixed waste gas (flue gas). During the dispersion reaction, the fixedly arranged flow guide device and the rotatably arranged atomizer are matched with each other, so that the sodium hydroxide slurry can be atomized and dispersed into smaller particles, the combustion flue gas and the atomized particles are fully contacted and mixed, and the maximization of the reaction is realized; and the shape that reaction unit lower part inwards contracts sets up, avoids the sodium hydroxide thick liquid because centrifugal force outwards diffuses, and forms the effect of gathering together for the contact time of burning flue gas and sodium hydroxide thick liquid is longer.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the disperser according to the present invention;
fig. 3 is a schematic diagram of the internal structure of the disperser of the present invention.
In the figure: 12. a combustion boiler; 16. a smoke exhaust duct; 14. a first dust remover; 20. an air intake duct; 22. a reaction unit; 2. a slurry supply system; 44. a gas distribution system; 48. a liquid distribution pipeline; 46. a supply source; 32. an upper end cover; 34. an atomizer; 38. a flow guide device; 26. a disperser; 50. a material containing hopper; 52. a discharge outlet; 54. an exhaust duct; 56. a second dust remover; 58. an outer discharge pipe; 60. a conical guide sleeve; 66. a profiled shaft; 61. rotating the sleeve; 62. a second vane panel; 63. a first vane panel; 64. an outer atomization channel; 65. an inner atomization channel.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1-3, the utility model provides a SOx/NOx control reaction unit for combustion boiler, include:
a first dust collector 14 connected to the combustion boiler 12 through a flue gas exhaust duct 16 to perform preliminary filtering dust removal on combustion flue gas;
a spray absorber 22 communicated with the first dust collector 14 through the air inlet pipe 20 for performing desulfurization and denitrification operations on the combustion flue gas;
a slurry supply system 2 installed at an upper portion of the spray absorber 22 and spraying the atomized slurry into the spray absorber 22;
the gas distribution system 44 is positioned at the upper part of the spray absorber 22 and is communicated with one end of the outlet of the gas inlet pipeline 20 so as to be used for feeding the combustion flue gas subjected to primary dust removal into the spray absorber 22;
and the second dust remover 56 is communicated with the spray absorber 22 through the exhaust pipeline 54 and is used for carrying out secondary dust removal on the desulfurized and denitrated combustion flue gas.
The slurry supply system 2 includes a supply source 46 and a liquid distribution pipeline 48 extending outward from the supply source 46, wherein a plurality of liquid distribution manifolds (not shown) extending perpendicularly to the liquid distribution pipeline 48 extend from the liquid distribution pipeline 48, and the lower ends of the liquid distribution manifolds are connected with the atomizers 34; a calcium hydroxide slurry is stored within the supply source 46.
As an embodiment of the present invention, the air distribution system 44 includes a horizontal main pipe (not shown in the figure) vertically connected to the air inlet pipe 20, a plurality of air distribution manifolds (not shown in the figure) vertically extending from the horizontal main pipe, and the lower ends of the air distribution manifolds are connected to the flow guiding device 38; the flow guide devices 38 and the atomizers 34 are arranged in a one-to-one correspondence, and together form the reaction unit 26.
In an embodiment of the present invention, a hopper 50 is formed at a lower portion of the spray absorber 22, and a discharge port 52 for discharging the reaction product EP is formed at the hopper 50.
As an embodiment of the present invention, the gas outlet end of the second dust collector 56 is connected to the outer discharge pipe 58, and the outer discharge pipe 58 discharges the purified combustion flue gas to the atmosphere.
As an embodiment of the present invention, the first dust collector 14 is an electrostatic dust collector, and the second dust collector 56 is a bag-type dust collector.
In one embodiment of the present invention, the main body of the spray absorber 22 is a cylindrical sealed container having a conical hopper 50 at the lower part, and the diameter of the cylindrical sealed container is 15-20 m.
In one embodiment of the present invention, the reaction units 26 are uniformly distributed on the upper end cap 32 of the spray absorber 22; the atomizer 34 is a rotary atomizer that uses a rotary action to break up and atomize the slurry into fine particles.
As an embodiment of the present invention, the outside of the reaction unit 26 is a diversion device 38, and the atomizer 34 is located inside the diversion device 38 and driven by a rotary driving mechanism (not shown in the figure); the deflector 38 comprises a cylindrical guide sleeve (not shown) at the upper part and a conical guide sleeve 60 connected at the lower part;
the atomizer 34 comprises a special-shaped shaft 66, a plurality of first fan blades 63 which are uniformly distributed are fixedly mounted on the outer surface of the special-shaped shaft 66, a rotating sleeve 61 is fixedly mounted on the outer ring of the first fan blades 63, a plurality of second fan blades 62 which are uniformly distributed are fixedly mounted on the outer surface of the rotating sleeve 61, an inner atomization channel 65 is formed between the special-shaped shaft 66 and the rotating sleeve 61, and an outer atomization channel 64 is formed between the rotating sleeve 61 and the flow guide device 38.
As an embodiment of the present invention, the first vane plate 63 and the second vane plate 62 are both disposed in an inclined manner, and the inclined directions of the first vane plate 63 and the second vane plate 62 are opposite to each other, and the inclined angles of the axes of the first vane plate 63, the second vane plate 62 and the special-shaped shaft 66 are all 25 to 35 °; wherein, the number of the first fan blade plates 63 is 10 to 15, and the number of the second fan blade plates 62 is 20 to 30.
As an embodiment of the present invention, a gap of 2-8 mm is formed between the air guiding device 38 and the second blade plate 62.
As an embodiment of the present invention, the rotating sleeve 61 includes a cylindrical rotating guide sleeve (not shown in the figure) located at the upper portion and a conical rotating guide sleeve (not shown in the figure) connected to the lower portion thereof; the special-shaped shaft 66 comprises a cylindrical shaft section connected with the rotary driving mechanism and a conical shaft section integrally formed with the cylindrical shaft section; the inner atomization channel 65 and the outer atomization channel 64 are both channels with annular sections, the sizes of the cross sections of the inner atomization channel 65 are the same, and the sizes of the cross sections of the outer atomization channel 64 are the same.
This SOx/NOx control reaction unit for combustion boiler's theory of operation: the combustion flue gas passes through the gas distribution manifold and enters the inner side atomization channel 65 and the outer side atomization channel 64, the sodium hydroxide slurry enters the corresponding inner side atomization channel 65 and the outer side atomization channel 64 through the liquid distribution manifold, the rotary driving mechanism drives the special-shaped shaft to drive the atomizer to rotate at a high speed, the sodium hydroxide slurry is efficiently atomized and is fully mixed and reacted with the combustion flue gas, and sulfur dioxide (SO) in the combustion flue gas is generated2) Is absorbed to form Na when meeting sodium hydroxide slurry2SO3Due to Na2SO3Has reducing property, and can further react with Nitrogen Oxide (NO)x) The reaction realizes the synchronous operation of desulfurization and denitrification, reduces the using amount of reducing agents, reduces the treatment cost, has obvious environmental protection effect, and can be widely applied to the wet desulfurization and denitrification of mixed waste gas (flue gas).
During the dispersion reaction, the fixedly arranged flow guide device and the rotatably arranged atomizer are matched with each other, so that the sodium hydroxide slurry can be atomized and dispersed into smaller particles, the combustion flue gas and the atomized particles are fully contacted and mixed, and the maximization of the reaction is realized; the lower part of the reaction unit 26 is in an inward shrinking shape, so that the sodium hydroxide slurry is prevented from diffusing outwards due to centrifugal force, and a gathering effect is formed, so that the contact time between the combustion flue gas and the sodium hydroxide slurry is longer.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a SOx/NOx control reaction unit for combustion boiler which characterized in that includes:
a first dust collector (14) connected with the combustion boiler (12) through a smoke exhaust pipeline (16) to carry out preliminary filtration and dust removal on combustion smoke;
the spray absorber (22) is communicated with the first dust remover (14) through an air inlet pipeline (20) and is used for carrying out desulfurization and denitrification operation on the combustion flue gas;
a slurry supply system (2) which is installed at the upper part of the spray absorber (22) and sprays atomized slurry into the spray absorber (22);
the gas distribution system (44) is positioned at the upper part of the spray absorber (22) and is communicated with one end of the outlet of the gas inlet pipeline (20) so as to be used for feeding the combustion flue gas subjected to primary dust removal into the spray absorber (22); and
the second dust remover (56) is communicated with the spray absorber (22) through an exhaust pipeline (54) and is used for carrying out secondary dust removal on the desulfurized and denitrated combustion flue gas;
the slurry supply system (2) comprises a supply source (46) and a liquid distribution pipeline (48) extending outwards from the supply source (46), a plurality of liquid distribution manifolds vertically arranged with the liquid distribution pipeline extend out of the liquid distribution pipeline (48), and the lower ends of the liquid distribution manifolds are connected with atomizers (34); a calcium hydroxide slurry is stored in the supply source (46);
the air distribution system (44) comprises a horizontal main pipe vertically connected with the air inlet pipeline (20), a plurality of air distribution manifolds vertical to the horizontal main pipe extend out of the horizontal main pipe, and the lower ends of the air distribution manifolds are connected with a flow guide device (38); the flow guide devices (38) and the atomizers (34) are arranged in one-to-one correspondence to form a reaction unit (26).
2. The desulfurization and denitrification reaction apparatus for a combustion boiler according to claim 1, wherein a hopper (50) is formed at a lower portion of the spray absorber (22), and a discharge opening (52) is formed in the hopper (50).
3. The desulfurization and denitrification reaction device for a combustion boiler as claimed in claim 1, wherein the outlet end of the second dust collector (56) is connected to an external discharge pipe (58), and the external discharge pipe (58) discharges the purified combustion flue gas into the atmosphere.
4. The desulfurization and denitrification reaction device for a combustion boiler according to claim 1, wherein the first dust collector (14) is an electrostatic dust collector, and the second dust collector (56) is a bag-type dust collector.
5. The desulfurization and denitrification reaction apparatus for a combustion boiler according to claim 2, wherein the main body of the spray absorber (22) is a cylindrical sealed vessel having a tapered hopper (50) at a lower portion thereof, and the diameter of the cylindrical sealed vessel is 15 to 20 m.
6. The desulfurization and denitrification reaction apparatus for a combustion boiler as claimed in claim 1, wherein the reaction unit (26) is a plurality of units, and is uniformly distributed on the upper end cover (32) of the spray absorber (22), and the atomizer (34) is a rotary atomizer, i.e., the slurry is broken up and atomized into fine particles by a rotary action.
7. The desulfurization and denitrification reaction apparatus for a combustion boiler as set forth in claim 6, wherein the reaction unit (26) is externally provided with a deflector (38), and the atomizer (34) is located inside the deflector (38) and driven by a rotary drive mechanism; the flow guiding device (38) comprises a cylindrical guide sleeve positioned at the upper part and a conical guide sleeve (60) connected to the lower part of the cylindrical guide sleeve; the atomizer (34) comprises a special-shaped shaft (66), a plurality of first fan blades (63) which are uniformly distributed are fixedly mounted on the outer surface of the special-shaped shaft (66), a rotating sleeve (61) is fixedly mounted on the outer ring of the first fan blades (63), and a plurality of second fan blades (62) which are uniformly distributed are fixedly mounted on the outer surface of the rotating sleeve (61); an inner atomization channel (65) is formed between the special-shaped shaft (66) and the rotating sleeve (61), and an outer atomization channel (64) is formed between the rotating sleeve (61) and the flow guide device (38).
8. The desulfurization and denitrification reaction apparatus for a combustion boiler as set forth in claim 7, wherein the first vane plate (63) and the second vane plate (62) are disposed in an inclined manner, and the inclination directions of the first vane plate and the second vane plate are opposite to each other; the inclination angles of the axes of the first fan blade plate (63), the second fan blade plate (62) and the special-shaped shaft (66) are all 25-35 degrees; wherein the number of the first fan blade plates (63) is 10-15, and the number of the second fan blade plates (62) is 20-30.
9. The desulfurization and denitrification reaction apparatus for a combustion boiler as set forth in claim 7, wherein the deflector (38) has a clearance with the second louver (62) of 2-8 mm.
10. The desulfurization and denitrification reaction apparatus for a combustion boiler as set forth in claim 7, wherein the rotary sleeve (61) comprises a cylindrical rotary guide sleeve at an upper portion and a conical rotary guide sleeve connected to a lower portion thereof; the special-shaped shaft (66) comprises a cylindrical shaft section connected with the rotary driving mechanism and a conical shaft section integrally formed with the cylindrical shaft section; the inner atomization channel (65) and the outer atomization channel (64) are both channels with annular sections, the sizes of the cross sections of the inner atomization channel (65) are the same, and the sizes of the cross sections of the outer atomization channel (64) are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212898.3U CN210356675U (en) | 2019-07-30 | 2019-07-30 | SOx/NOx control reaction unit for combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212898.3U CN210356675U (en) | 2019-07-30 | 2019-07-30 | SOx/NOx control reaction unit for combustion boiler |
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| Publication Number | Publication Date |
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| CN210356675U true CN210356675U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921212898.3U Active CN210356675U (en) | 2019-07-30 | 2019-07-30 | SOx/NOx control reaction unit for combustion boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110302653A (en) * | 2019-07-30 | 2019-10-08 | 苏州仕净环保科技股份有限公司 | A kind of burning boiler desulfurization and denitrification reaction device |
-
2019
- 2019-07-30 CN CN201921212898.3U patent/CN210356675U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110302653A (en) * | 2019-07-30 | 2019-10-08 | 苏州仕净环保科技股份有限公司 | A kind of burning boiler desulfurization and denitrification reaction device |
| CN110302653B (en) * | 2019-07-30 | 2023-12-22 | 苏州仕净科技股份有限公司 | Desulfurization and denitrification reaction device for combustion boiler |
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Address after: 215000 Suzhou Shijing Technology Co., Ltd Patentee after: Suzhou Shijing Technology Co.,Ltd. Address before: 215137 4th floor, 82 Jincheng Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU SHIJING ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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Address after: 215000 No. 58, Jinrui Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Suzhou Shijing Technology Co.,Ltd. Address before: 215137 4th floor, 82 Jincheng Road, Taiping Street, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU SHIJING ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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