CN114939336A - Coal-fired flue gas desulfurization denitration decarbonization device - Google Patents
Coal-fired flue gas desulfurization denitration decarbonization device Download PDFInfo
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- CN114939336A CN114939336A CN202210777831.4A CN202210777831A CN114939336A CN 114939336 A CN114939336 A CN 114939336A CN 202210777831 A CN202210777831 A CN 202210777831A CN 114939336 A CN114939336 A CN 114939336A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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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
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Abstract
The application discloses a coal-fired flue gas desulfurization, denitrification and decarbonization device, which relates to the field of waste gas treatment and comprises a tower body, wherein liquid is filled in the tower body; the setting is at the tower body lateral wall and deepens the tower body inner chamber and be used for adding a plurality of reaction tubes of chemical, and the tower body inner wall is provided with the intercommunication and corresponds the reaction tube and make chemical evenly distributed's distribution subassembly. The application has the effect of improving the reaction of the flue gas and the lime water.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a coal-fired flue gas desulfurization, denitrification and decarburization device.
Background
A large amount of sulfur-containing, carbon-containing and nitrogen-containing substances exist in flue gas generated after coal is combusted, the main substances of the flue gas are sulfur dioxide, nitrogen dioxide, carbon dioxide and the like, and untreated flue gas is directly discharged into air to cause environmental pollution.
In the related technology, the flue gas treatment of a factory firstly leads the flue gas into lime water for reaction, and then the flue gas is sent into various devices for further treatment.
In the process of implementing the application, the inventor finds that at least the following problems exist in the technology, and in the process of introducing the flue gas into the lime water, the flue gas has a tendency of moving upwards due to large flow velocity of the flue gas, so that the flue gas is unevenly distributed in the lime water, and the flue gas purification effect is poor.
Disclosure of Invention
In order to improve the effect that the flue gas can fully react in the lime wash, this application provides a coal-fired flue gas desulfurization denitration decarbonization device.
The application provides a pair of coal-fired flue gas desulfurization denitration decarbonization device adopts following technical scheme:
a coal-fired flue gas desulfurization, denitrification and decarburization device comprises a tower body, wherein liquid is filled in the tower body, a plurality of spraying assemblies and a conveying pipe are arranged in the tower body, the spraying assemblies are positioned above the liquid level, the conveying pipe is arranged on the outer side wall of the tower body and deeply enters the liquid in the inner cavity of the tower body, a dispersing assembly for enabling flue gas to be uniformly distributed is arranged on the inner wall of the tower body, and the dispersing assembly is communicated with the conveying pipe; the setting is at the tower body lateral wall and deepens the tower body inner chamber and be used for adding a plurality of reaction tubes of chemical, and the tower body inner wall is provided with the intercommunication and corresponds the reaction tube and make chemical evenly distributed's distribution subassembly.
By adopting the technical scheme, the flue gas firstly enters the tower body through the conveying pipe and then reacts with liquid in the tower body to remove sulfur-containing, nitrogen-containing and carbon-containing substances in the flue gas, the liquid can be economical lime water or can be added with other substances, the lime water and the sulfur-containing, nitrogen-containing and carbon-containing reactions generate precipitates, so that the effects of desulfurization, denitrification and decarburization are realized, the flue gas enters the dispersion assembly, the flue gas can be uniformly distributed in the liquid, and the flue gas and the liquid can be favorably and fully reacted; the staff can be to adding chemical substance in the reaction tube for there is sufficient calcium hydroxide in the tower body and the material reaction in the flue gas, and gets into the distribution subassembly through the reaction tube, realizes the evenly distributed of calcium hydroxide, makes in the flue gas impurity ability and calcium hydroxide fully react.
Optionally, the dispersing assembly includes first mesh pipes disposed on an inner wall of the tower body and uniformly arranged on a cross section of the tower body, the first mesh pipes include a plurality of parallel conveying branch pipes, and the conveying branch pipes are communicated with each other; a plurality of gas holes are uniformly formed in one side, deviating from the liquid level, of each conveying branch pipe, a folded plate used for enabling gas to be distributed more uniformly is arranged on the outer side wall of each conveying branch pipe, the folded plate is located below the gas holes corresponding to the conveying branch pipes, and the cross section of the folded plate is in an inverted V shape.
By adopting the technical scheme, the reaction of the calcium hydroxide and the flue gas generates precipitate, so that the side wall of the conveying branch pipe, which is far away from the liquid level, is uniformly provided with a plurality of air holes, the possibility that the precipitate enters the conveying branch pipe is reduced, and the possibility that the conveying branch pipe is blocked is reduced; the folded plate is used for enabling smoke to be more uniformly distributed in the tower body after the smoke overflows the conveying branch pipe, and can prevent partial sediments from reversely entering the conveying branch pipe.
Optionally, the distribution assembly comprises second mesh pipes which are arranged on the inner wall of the tower body and are uniformly distributed on the cross section of the tower body, each second mesh pipe comprises a plurality of parallel reaction branch pipes, and the reaction branch pipes are communicated with each other; the second reticular tube is arranged on the upper side and the lower side of the first reticular tube; the reaction branch pipes are provided with a plurality of release holes, the release holes of the reaction branch pipes above the first reticular pipe face the first reticular pipe, and the release holes of the reaction branch pipes below the first reticular pipe face the first reticular pipe.
By adopting the technical scheme, the release holes positioned above the first reticular tube face downwards, so that the blockage of the reaction branch pipe by the precipitate is reduced; the release holes positioned below the first reticular tube face upwards, so that the first reticular tube is fully contacted with the flue gas, and the reaction is accelerated.
Optionally, the first mesh pipe and the second mesh pipe are rotatably connected to the inner wall of the tower body, the rotation axes of the first mesh pipe and the second mesh pipe are perpendicular to the length direction of the corresponding conveying branch pipe or reaction branch pipe, and the end portions of the conveying branch pipe and the reaction branch pipe are both open; the joint of the first reticular tube and the conveying pipe and the joint of the second reticular tube and the reaction tube are provided with bendable and telescopic bent tubes; and a plurality of limiting rings for limiting the rotation angles of the first reticular tube and the second reticular tube are fixed on the inner wall of the tower body.
Through adopting above-mentioned technical scheme, there has been the sediment material in carrying branch pipe and reaction branch pipe, perhaps has because factors such as the unstability of flue gas, all can make first netted pipe and the rotation of second netted pipe, and release hole, gas pocket, opening part outflow can be followed to the deposit at rotation in-process, reduce the jam reaction branch pipe of impurity or carry the possibility of branch pipe.
Optionally, the inner wall of the tower body is provided with a impurity removing water pipe located below the first mesh pipe, the impurity removing water pipe is located between the first mesh pipe and the reaction branch pipe, and the impurity removing water pipe is provided with a cleaning nozzle used for spraying liquid to the first mesh pipe.
Through adopting above-mentioned technical scheme, when carrying a large amount of impurity in the branch pipe, the accessible washs the shower nozzle and clears up.
Optionally, the tower body inner wall is provided with two loading boards that are located the liquid level top, and two loading boards are located a plurality of spray assembly belows, are provided with a plurality of bobbles that are used for reducing the flue gas and flow out fast between two loading boards.
Through adopting above-mentioned technical scheme, a plurality of pellets can reduce the flue gas and spill over from liquid fast for the dwell time that the flue gas can be in liquid lengthens, makes the reaction more abundant.
Optionally, the inner wall of the tower body is provided with a collecting lath, and the collecting lath is positioned between the upper reaction branch pipe and the lower bearing plate; a plurality of collecting boxes are arranged on the collecting lath in a sliding manner, adjacent collecting boxes are mutually connected, a plurality of collecting holes are formed in the side wall of each collecting box, a top plate positioned above the collecting boxes is fixed on the side wall of each collecting box, and the cross section of the top plate is in an inverted V shape; the side wall of the tower body is provided with a plurality of tower doors for communicating the inner cavity of the tower body, and each collecting lath corresponds to one tower door.
Through adopting above-mentioned technical scheme, the collecting box can collect partial precipitate, reduces the precipitate and blocks up the possibility of carrying branch pipe and reaction branch pipe, and the flue gas can take the precipitate upward movement, and the lower surface of roof is touched to the precipitate, and the slope along the lower surface of roof will gather in the collecting box, and after tower body stop work, the staff can open the tower door, realizes the clearance to the collecting box.
Optionally, the tower body bottom plate is arranged in an inclined manner; the tower body lateral wall is provided with and is used for the inside output tube that realizes liquid drainage of intercommunication tower body, and the output tube is located below reaction branch pipe.
Through adopting above-mentioned technical scheme, the tower body bottom plate can be sunk to the deposit of the majority to through the tower body bottom surface that the slope set up, discharge the deposit from the output tube.
Optionally, the inner wall of the tower body is provided with a flat demister positioned between the spraying assemblies.
Through adopting above-mentioned technical scheme, the flue gas that comes out from the bobble clearance will further detach the impurity or the dust in the flue gas through spray assembly, and the dull and stereotyped defroster makes the flue gas make its distribution even again on the one hand, and reduces smile impurity upward movement in the flue gas simultaneously.
Optionally, the spray assembly comprises a spray pipe fixed on the inner wall of the tower body, and a plurality of spray nozzles are arranged on the spray pipe.
Through adopting above-mentioned technical scheme, spray the shower nozzle and realize the purification to the flue gas on the one hand, on the other hand can realize the clearance to dull and stereotyped defroster.
In summary, the present application includes at least one of the following beneficial technical effects:
flue gas passes through the conveyer pipe and gets into the delivery branch pipe, realizes the evenly distributed in the liquid, and chemical substance passes through the reaction tube and gets into reaction branch pipe, realizes evenly distributed, realizes then that the flue gas fully reacts in the liquid again.
Because the reaction can produce the precipitate, realize the rotation of first netted pipe, second netted pipe, set up modes such as washing shower nozzle and all reduce the conveying branch pipe and the possibility of reaction branch pipe jam.
Drawings
Fig. 1 is a schematic view of the internal overall structure of a tower body according to an embodiment of the present application.
Fig. 2 is a schematic view of the internal structure of the tower body.
Figure 3 is a schematic view of the construction of the delivery manifold and flap.
Fig. 4 is a schematic structural view of the connection of the collecting box and the tower body.
Description of the reference numerals:
1. a tower body; 2. a spray assembly; 3. a delivery pipe; 4. a dispersion assembly; 5. a reaction tube; 6. a distribution assembly; 7. a first mesh tube; 8. a delivery branch pipe; 9. air holes; 10. folding the plate; 11. a second mesh tube; 12. a reaction branch pipe; 13. a release hole; 14. bending the pipe; 15. a confinement ring; 16. impurity removing water pipes; 17. cleaning the spray head; 18. a carrier plate; 19. a pellet; 20. collecting the laths; 21. a collection box; 22. a top plate; 23. a tower door; 24. an output pipe; 25. a flat demister; 26. a spray header; 27. a spray nozzle; 28. a collection well; 29. a support strip.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses coal-fired flue gas desulfurization denitration decarbonization device. Referring to fig. 1, the device comprises a tower body 1 and a conveying pipe 3 welded on the outer side wall of the tower body 1, wherein flue gas is input into the tower body 1 from the conveying pipe 3; the tower body 1 is internally provided with liquid containing calcium hydroxide for realizing desulfurization, decarburization and denitrification, the flue gas and the lime water react to generate precipitate, and the conveying pipe 3 passes through the inside of the tower body 1 and extends to the position below the liquid level; the inner wall of the tower body 1 is provided with a dispersion assembly 4 for uniformly distributing the flue gas, and the dispersion assembly 4 is communicated with a conveying pipe 3; the outer side wall of the tower body 1 is welded with a plurality of reaction tubes 5 used for adding chemical substances, the reaction tubes 5 are communicated with the inside of the tower body 1 and extend below the liquid level, the inner wall of the tower body 1 is provided with a plurality of distribution components 6, the distribution components 6 are positioned at the upper side and the lower side of the dispersion component 4, and the distribution components 6 are communicated with the corresponding reaction tubes 5; flue gas passes through conveyer pipe 3 and gets into in tower body 1, then realizes the evenly distributed in the liquid through dispersion subassembly 4, and the chemical substance that contains calcium hydroxide will be inputed into tower body 1 through reaction tube 5 in, and the chemical substance realizes evenly distributed through distribution subassembly 6 for flue gas and chemical substance ability fully react.
Referring to fig. 1, 2 and 3, the dispersing assembly 4 comprises a first mesh pipe 7 arranged on the inner wall of the tower body 1, and the first mesh pipe 7 is uniformly distributed on the cross section of the tower body 1; the first reticular pipe 7 comprises a plurality of conveying branch pipes 8, and the axes of the plurality of conveying branch pipes 8 are parallel to each other and are uniformly arranged at intervals; communicate each other between the adjacent branch pipe 8 of carrying, carry branch pipe 8 and all seted up a plurality of gas pockets 9 on the one side that deviates from the liquid level, a plurality of gas pockets 9 set up along carrying branch pipe 8 along the even interval of axis direction, and gas pocket 9 is seted up down and is reduced the possibility that impurity is detained in carrying branch pipe 8.
Referring to fig. 1 and 2, the distribution assembly 6 includes a second mesh pipe 11 disposed inside the tower body 1, and the second mesh pipe 11 is uniformly distributed on the cross section of the tower body 1; the second reticular tube 11 comprises a plurality of reaction branch tubes 12, and the axes of the reaction branch tubes 12 are parallel to each other and are uniformly arranged at intervals; the adjacent reaction branch pipes 12 are communicated with each other, a plurality of release holes 13 are formed in the reaction branch pipes 12, and the release holes 13 are uniformly arranged along the reaction branch pipes 12 at intervals along the axial direction; the number of the second reticular tubes 11 is two, and the second reticular tubes are respectively positioned at the upper side and the lower side of the first reticular tube 7; the release holes 13 of the reaction branch pipes 12 positioned above the first mesh pipe 7 are all downward, so that the possibility of sediment in the reaction branch pipes 12 positioned above is reduced; the discharge holes 13 of the reaction branch pipes 12 positioned below the first mesh pipe 7 are all upward, so that the chemical substances can quickly react with the smoke after flowing out.
Referring to fig. 2 and 3, a plurality of support bars 29 are welded on the side wall of the conveying branch pipe 8, the support bars 29 are uniformly distributed on two sides of the conveying branch pipe 8, a folded plate 10 connected with the support bars 29 on the same conveying branch pipe 8 is welded on the support bars 29, the length direction of the folded plate 10 is parallel to the length direction of the conveying branch pipe 8, and the folded plate 10 is located below the air hole 9; the cross section of the folded plate 10 is inverted V-shaped, on one hand, smoke can uniformly overflow along the upper surface of the folded plate 10 after coming out of the air hole 9, and is uniformly distributed in the smoke and the liquid, and on the other hand, the possibility that impurities enter the conveying branch pipe 8 is reduced.
Referring to fig. 1 and 2, the first reticular tube 7 and the second reticular tube 11 are rotatably connected to the inner wall of the tower body 1, and the rotation axes of the first reticular tube 7 and the second reticular tube 11 are horizontally arranged and are vertical to the length direction of the conveying branch pipe 8; both ends of the conveying branch pipe 8 and the reaction branch pipe 12 are provided with openings, and the first reticular pipe 7 and the second reticular pipe 11 can rotate in liquid, so that the effect of discharging precipitates positioned in the conveying branch pipe 8 and the reaction branch pipe 12 is realized; bendable and telescopic bent pipes 14 are welded between the conveying pipe 3 and the first reticular pipe 7 and between the reaction pipe 5 and the second reticular pipe 11, so that the phenomenon of interference between the first reticular pipe 7 and the second reticular pipe 11 during rotation is avoided; the inner wall of the tower body 1 is provided with three limiting rings 15 for limiting the rotation angles of the first reticular tube 7 and the second reticular tube 11, and the limiting rings 15 are respectively positioned at the lower sides of the first reticular tube 7 and the second reticular tube 11.
Referring to fig. 1 and 2, impurity removing water pipes 16 for cleaning the conveying branch pipes 8 are welded on the inner side wall of the tower body 1, and the impurity removing water pipes 16 are positioned below the conveying branch pipes 8 and above the reaction branch pipes 12 below; the impurity removing water pipe 16 is connected with a plurality of cleaning nozzles 17 which are uniformly distributed through threads, and the cleaning nozzles 17 can spray water upwards; this wash shower nozzle 17 can play the effect to the inside clearance of tower body 1 when tower body 1 is out of work, perhaps lets in cold water and is favorable to realizing the effect of cooling to liquid at tower body 1 during operation.
Referring to fig. 1, two bearing plates 18 above the liquid level are welded on the inner wall of the tower body 1, the bearing plates 18 can allow flue gas to flow through, the two bearing plates 18 are both horizontally arranged, the bearing plate 18 below is close to the liquid level, and the bearing plate 18 below may be submerged below the liquid level due to the constant change of the liquid amount in the tower body 1; a plurality of balls 19 are arranged between the two bearing plates 18, and the balls 19 are filled to be half full between the two bearing plates 18, so that the overflowing speed of the flue gas from the liquid is reduced, and the flue gas can react more fully in the liquid.
Referring to fig. 1, 2 and 4, the inner wall of the tower body 1 is provided with a plurality of collecting laths 20 positioned between the lower bearing plate 18 and the upper reaction branch pipe 12, the collecting laths 20 are welded on the inner side wall of the tower body 1, and the collecting laths 20 are horizontally arranged; the collecting lath 20 is provided with a plurality of collecting boxes 21 in a sliding manner, the collecting boxes 21 slide along the length direction of the collecting lath 20, and the sliding connection between the collecting boxes 21 and the collecting plates can be realized through dovetail grooves and dovetail blocks; the side wall of the collection box 21 is provided with a plurality of collection holes 28 for collecting sediments, a top plate 22 positioned above the collection box 21 is welded on the collection box 21, the cross section of the top plate 22 is inverted V-shaped, and the top plate 22 covers the collection box 21 under orthographic projection; the adjacent collecting boxes 21 on the same collecting lath 20 can be connected in a mode of steel ropes, hoops and the like, so that the tower body 1 can be taken out conveniently; the outer side wall of the tower body 1 is rotatably connected with a plurality of tower doors 23 for opening the tower body 1, and the tower doors 23 are communicated with the inside of the tower body 1 and correspond to the collecting laths 20 one by one; the collection box 21 can be removed through the tower door 23.
In order to reduce the blockage of the first reticular pipe 7 and the second reticular pipe 11 caused by the sediment, a collecting box 21 is arranged above the conveying branch pipe 8, the sediment drives the sediment to rise along the rising smoke gas and touch a top plate 22, and the sediment is gathered in the collecting box 21 along the lower surface of the top plate 22; when the tower body 1 stops working, the collecting box 21 can be taken out from the tower door 23, and cleaning is realized.
Referring to fig. 1 and 2, the bottom plate of the tower body 1 is obliquely arranged, an output pipe 24 communicated with the interior of the tower body 1 is welded on the side wall of the tower body 1, and the output pipe 24 is positioned below the lower reaction branch pipe 12; the output pipe 24 is used for realizing liquid replacement, keeping the balance of the liquid level in the tower body 1 and discharging sediment, and the sediment gathered on the bottom plate of the tower body 1 can be discharged along the inclined plane of the bottom plate.
Referring to fig. 1 and 2, the inner wall of the tower body 1 is provided with three spray assemblies 2, the three spray assemblies 2 are all positioned above the liquid level, each spray assembly 2 comprises a spray header 26 welded on the inner side wall of the tower body 1, the spray headers 26 are horizontally arranged and uniformly cover the cross section of the tower body 1, and a plurality of spray nozzles 27 which are uniformly distributed are in threaded connection on the spray headers 26; in the spray assembly 2 from top to bottom, the spray nozzles 27 on the uppermost and middle spray header 26 spray liquid downwards, and the spray nozzles 27 on the lowermost spray header 26 spray liquid upwards; the welding of tower body 1 inside wall has the dull and stereotyped defroster 25 that is located between middle and the spray header 26 of below, and dull and stereotyped defroster 25 can be used to distribute the flue gas once more evenly for the contact flue gas that liquid in the shower nozzle 27 can be better.
The implementation principle of a coal-fired flue gas desulfurization, denitrification and decarbonization device is as follows: flue gas enters a conveying branch pipe 8 through a conveying pipe 3 to be uniformly distributed in liquid, chemical substances enter a reaction branch pipe 12 through a reaction pipe 5 to be uniformly distributed, the flue gas flows out through a folded plate 10, and precipitates generated by reaction of the flue gas and the liquid enter a collecting box 21 or are output through an output pipe 24; eyes can pass through further washing and reaction of spray assembly 2 after two loading boards 18 to realize the evenly distributed once more of flue gas through dull and stereotyped defroster 25, through the two-layer spray assembly 2 that is located the top, the tower body 1 of discharging at last.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a coal-fired flue gas desulfurization denitration decarbonization device, is equipped with tower body (1) of liquid including inside, and tower body (1) is inside to be provided with a plurality of spray assembly (2) that are located more than the liquid level, its characterized in that: the delivery pipe (3) is arranged on the outer side wall of the tower body (1) and extends into liquid in the inner cavity of the tower body (1), the inner wall of the tower body (1) is provided with a dispersion assembly (4) which enables smoke to be uniformly distributed, and the dispersion assembly (4) is communicated with the delivery pipe (3); the setting is at tower body (1) lateral wall and deepen tower body (1) inner chamber and be used for adding a plurality of reaction tubes (5) of chemical, and tower body (1) inner wall is provided with the intercommunication and corresponds reaction tube (5) and make chemical evenly distributed's distribution subassembly (6).
2. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 1, wherein: the dispersing assembly (4) comprises first reticular tubes (7) which are arranged on the inner wall of the tower body (1) and are uniformly distributed on the cross section of the tower body (1), the first reticular tubes (7) comprise a plurality of conveying branch tubes (8) which are parallel to each other, and the conveying branch tubes (8) are communicated with each other; a plurality of air holes (9) are uniformly formed in one side, deviating from the liquid level, of each conveying branch pipe (8), a folded plate (10) used for enabling gas to be distributed more uniformly is arranged on the outer side wall of each conveying branch pipe (8), the folded plate (10) is located below the corresponding air holes (9) of the conveying branch pipes (8), and the cross section of the folded plate (10) is in an inverted V shape.
3. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 2, wherein: the distribution assembly (6) comprises second reticular tubes (11) which are arranged on the inner wall of the tower body (1) and are uniformly distributed on the cross section of the tower body (1), the second reticular tubes (11) comprise a plurality of reaction branch tubes (12) which are parallel to each other, and the reaction branch tubes (12) are communicated with each other; the second reticular tube (11) is arranged at the upper side and the lower side of the first reticular tube (7); the reaction branch pipes (12) are provided with a plurality of release holes (13), the release holes (13) of the reaction branch pipes (12) above the first reticular pipes (7) face the first reticular pipes (7), and the release holes (13) of the reaction branch pipes (12) below the first reticular pipes (7) face the first reticular pipes (7).
4. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 3, wherein: the first reticular pipe (7) and the second reticular pipe (11) are rotatably connected to the inner wall of the tower body (1), the rotating axes of the first reticular pipe (7) and the second reticular pipe (11) are vertical to the length direction of the corresponding conveying branch pipe (8) or reaction branch pipe (12), and the end parts of the conveying branch pipe (8) and the reaction branch pipe (12) are arranged in an opening manner; the joint of the first reticular tube (7) and the conveying tube (3) and the joint of the second reticular tube (11) and the reaction tube (5) are provided with bendable and telescopic bent tubes (14); the inner wall of the tower body (1) is also fixed with a plurality of limiting rings (15) for limiting the rotation angles of the first reticular tube (7) and the second reticular tube (11).
5. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 4, wherein: the inner wall of the tower body (1) is provided with a impurity removing water pipe (16) positioned below the first reticular pipe (7), the impurity removing water pipe (16) is positioned between the first reticular pipe (7) and the reaction branch pipe (12), and the impurity removing water pipe (16) is provided with a cleaning spray head (17) used for spraying liquid to the first reticular pipe (7).
6. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 5, wherein: the tower body (1) inner wall is provided with two loading boards (18) that are located the circulated flue gas of liquid level top, and two loading boards (18) are located a plurality of spray assembly (2) below, are provided with between two loading boards (18) to be used for reducing a plurality of bobbles (19) that the flue gas flows out fast.
7. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 6, wherein: the inner wall of the tower body (1) is provided with a collecting lath (20), and the collecting lath (20) is positioned between the upper reaction branch pipe (12) and the lower bearing plate (18); the collecting lath (20) is provided with a plurality of collecting boxes (21) in a sliding manner, the adjacent collecting boxes (21) are mutually connected, the side wall of each collecting box (21) is provided with a plurality of collecting holes (28), the side wall of each collecting box (21) is fixedly provided with a top plate (22) positioned above the corresponding collecting box (21), and the cross section of each top plate (22) is in an inverted V shape; the side wall of the tower body (1) is provided with a plurality of tower doors (23) used for communicating the inner cavity of the tower body (1), and each collecting lath (20) corresponds to one tower door (23).
8. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 1, wherein: the bottom plate of the tower body (1) is obliquely arranged; the outer side wall of the tower body (1) is provided with an output pipe (24) used for communicating the interior of the tower body (1) to realize liquid discharge, and the output pipe (24) is positioned below the reaction branch pipe (12) below.
9. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 1, wherein: the inner wall of the tower body (1) is provided with a flat demister (25) positioned between the spraying components (2).
10. The coal-fired flue gas desulfurization, denitrification and decarburization device as recited in claim 9, wherein: the spray assembly (2) comprises a spray water pipe (26) fixed on the inner wall of the tower body (1), and a plurality of spray nozzles (27) are arranged on the spray water pipe (26).
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|---|---|---|---|
| CN202210777831.4A CN114939336B (en) | 2022-07-04 | 2022-07-04 | Desulfurization, denitrification and decarbonization device for coal-fired flue gas |
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|---|---|---|---|
| CN202210777831.4A CN114939336B (en) | 2022-07-04 | 2022-07-04 | Desulfurization, denitrification and decarbonization device for coal-fired flue gas |
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| CN114939336B CN114939336B (en) | 2023-09-19 |
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