CN111644046B - Desulfurization and denitrification absorption tower - Google Patents
Desulfurization and denitrification absorption tower Download PDFInfo
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- CN111644046B CN111644046B CN202010544081.7A CN202010544081A CN111644046B CN 111644046 B CN111644046 B CN 111644046B CN 202010544081 A CN202010544081 A CN 202010544081A CN 111644046 B CN111644046 B CN 111644046B
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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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
- B01D53/48—Sulfur compounds
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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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
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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
- B01D2251/606—Carbonates
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Abstract
The invention belongs to the technical field of environmental protection equipment, and particularly relates to a desulfurization and denitrification absorption tower, which comprises a tower body and a base; an annular liquid storage tank is arranged on the outer side surface of the tower body, a mounting ring is rotatably arranged on a top plate of the liquid storage tank, and a longitudinal stirring mechanism and a transverse stirring mechanism are arranged on the bottom surface of the mounting ring; the top surface of the mounting ring is provided with a connecting frame, and the end part of the connecting frame is fixedly provided with a first bevel gear ring; the top surface of the tower body is provided with a rotating motor, and an output shaft of the rotating motor is provided with a first bevel gear; the lower part of the connecting frame is rotatably provided with a roller; a cylindrical spraying cavity is arranged in the tower body, and a liquid conveying pipe is arranged on the side wall of the tower body; the outer end of the liquid conveying pipe is positioned at the bottom of the liquid storage box, the inner end of the liquid conveying pipe is communicated with the spraying cavity, and the liquid conveying pipe is provided with a water pump. The invention avoids the precipitation of limestone slurry and improves the uniformity of the concentration of the limestone slurry; and prevents the limestone slurry from being blocked in the spray opening.
Description
Technical Field
The invention belongs to the technical field of desulfurization and denitrification treatment, and particularly relates to a desulfurization and denitrification absorption tower.
Background
An absorption tower is a device for performing an absorption operation, and a process in which a readily soluble component is dissolved in an absorbent and separated from other components by using a difference in solubility of a gas mixture in a liquid absorbent is called absorption. In operation, the liquid absorbent sprayed from the top of the tower is in intimate contact with the gas mixture rising from the bottom of the tower on various layers of packing or trays in the tower for absorption; the absorption tower can be divided into a surface type, a membrane type, a spray type, a bubbling type and the like according to the gas-liquid action mode during absorption. The desulfurization and denitrification absorption tower generally adopts limestone slurry to spray to carry out desulfurization and denitrification on waste gas, and the existing desulfurization and denitrification absorption tower has the following problems in the actual production process: (1) when the limestone slurry is stored, the limestone slurry is easy to precipitate, so that the concentration of the limestone slurry is uneven, and the absorption effect of harmful substances in the waste gas is adversely affected; (2) the limestone slurry is easy to block the spraying port in the spraying process, so that uneven spraying of the limestone slurry is caused, and the absorption effect on harmful substances in the waste gas can be reduced.
Disclosure of Invention
Technical problem to be solved
The invention provides a desulfurization and denitrification absorption tower, which aims to solve the following problems in the actual production process of the conventional desulfurization and denitrification absorption tower: (1) when the limestone slurry is stored, the limestone slurry is easy to precipitate, so that the concentration of the limestone slurry is uneven, and the absorption effect of harmful substances in the waste gas is adversely affected; (2) the limestone slurry is easy to block the spraying port in the spraying process, so that uneven spraying of the limestone slurry is caused, and the absorption effect on harmful substances in the waste gas can be reduced.
(II) technical scheme
In order to solve the technical problems, the invention adopts the following technical scheme:
a desulfurization and denitrification absorption tower comprises a vertical cylindrical tower body, and a base is installed on the bottom surface of the tower body. The outer side surface of the tower body is fixedly provided with an annular liquid storage tank coaxial with the liquid storage tank, a top plate of the liquid storage tank is rotatably provided with a mounting ring coaxial with the liquid storage tank, and the bottom surface of the mounting ring is provided with a longitudinal stirring mechanism and a transverse stirring mechanism at even intervals along the circumferential direction of the mounting ring. The top surface of the mounting ring is uniformly and fixedly provided with a plurality of connecting frames along the circumferential direction, and the end parts of the connecting frames are fixedly provided with first bevel gear rings coaxial with the tower body. The top surface of the tower body is fixedly provided with a rotating motor, and an output shaft of the rotating motor is fixedly provided with a first bevel gear which is meshed with the first bevel gear ring. And a roller which is matched with the top plate of the liquid storage tank in a rolling way is rotatably arranged below the connecting frame. The inside of the tower body is fixedly provided with a cylindrical spraying cavity coaxial with the tower body through a connecting rod, and a plurality of liquid conveying pipes are uniformly and fixedly arranged on the side wall of the tower body along the circumferential direction of the side wall. The outer end of the infusion tube is positioned at the bottom of the liquid storage tank, the inner end of the infusion tube is communicated with the spraying cavity, and the infusion tube is provided with a water pump. The first bevel gear is driven to rotate through the rotating motor, so that the first bevel gear ring, the connecting frame, the mounting ring, the longitudinal stirring mechanism and the transverse stirring mechanism are driven to synchronously and horizontally rotate. The limestone slurry in the liquid storage tank is longitudinally stirred while the longitudinal stirring mechanism horizontally rotates, and the limestone slurry in the liquid storage tank is transversely stirred while the transverse stirring mechanism horizontally rotates.
The longitudinal stirring mechanism comprises a first rotating shaft, a spiral conveying blade and a second bevel gear. The first rotating shaft is vertically and rotatably arranged on the bottom surface of the mounting ring, the spiral conveying blade is fixedly arranged on the first rotating shaft, and the second bevel gear is fixedly arranged on the first rotating shaft. A second bevel gear ring which is meshed with the second bevel gear and is coaxial with the liquid storage tank is horizontally and fixedly arranged on the bottom plate of the liquid storage tank. The transverse stirring mechanism comprises a second rotating shaft, a stirring plate and a third bevel gear. The second rotating shaft is vertically and rotatably arranged on the bottom surface of the mounting ring, vertical stirring plates are uniformly and fixedly arranged on the second rotating shaft along the circumferential direction of the second rotating shaft, and a third bevel gear meshed with the second bevel gear ring is fixedly arranged on the second rotating shaft. When the longitudinal stirring mechanism rotates horizontally, the second bevel gear and the second bevel gear ring are in an engaged state, and the second bevel gear ring is fixedly installed on the bottom plate of the liquid storage tank, so that the second bevel gear can drive the first rotating shaft and the spiral conveying blade to rotate. The rotation of the screw conveying blades conveys the limestone slurry above the liquid storage tank downwards, and the limestone slurry below the liquid storage tank is supplemented upwards, so that the limestone slurry inside the liquid storage tank generates circulating flow in the vertical direction. When the transverse stirring mechanism rotates horizontally, the third bevel gear and the second bevel gear ring are in a mutual meshing state, so the third bevel gear can drive the second rotating shaft and the stirring plate to rotate. The stirring plate makes the limestone slurry in the liquid storage tank generate transverse circular flow in the rotating process.
A plurality of vertically communicated spraying openings are formed in the bottom plate of the spraying cavity. The upper surface of the spraying cavity bottom plate is rotatably provided with a circular plate coaxial with the spraying cavity bottom plate, and a through groove which penetrates through the circular plate up and down is formed in the position, corresponding to each spraying opening, of the circular plate. The upper surface of the circular plate is horizontally and fixedly provided with blades at the position right below the inner end of the infusion tube. The outer side surface of the circular plate is uniformly provided with a plurality of balls which are in rolling fit with the inner side wall of the spraying cavity along the circumferential direction. The limestone slurry in the liquid storage tank is sent into the spraying cavity through the liquid conveying pipe by the water pump. The limestone slurry pushes the blades to rotate, so that the circular plate and the through groove are driven to rotate. In the rotating process of the circular plate, on one hand, horizontal shearing force is applied to limestone slurry blocked in the spray opening; meanwhile, the spraying openings are periodically closed and communicated, so that the limestone slurry in the through grooves periodically applies pressure in the vertical direction to the limestone slurry in the spraying openings.
As a preferable technical scheme of the invention, the through groove is conical, and the diameter of the notch at the top is larger than that of the notch at the bottom, so that the speed of limestone slurry in the through groove is increased, the initial speed of the limestone slurry entering the spray opening is increased, the vertical pressure applied by the limestone slurry in the through groove to the limestone slurry in the spray opening is increased, and the dredging effect of the limestone slurry in the spray opening is improved.
As a preferred technical scheme of the invention, the lower surface of the bottom plate of the spraying cavity is vertically provided with the return springs at the positions at two sides of the spraying opening, and the bottom of the return spring is horizontally and fixedly provided with the water retaining sheet. The top surface of the water retaining sheet is fixedly provided with a vertical rod, and the top of the vertical rod is rotatably provided with a horizontal rod positioned in the spray port. Spiral guide grooves are formed in the inner side wall of the spraying opening, and guide cylinders matched with the guide grooves are fixedly installed at the two ends of the horizontal rod. The limestone slurry sprayed out from the spraying port impacts the water retaining sheet to push the water retaining sheet to move downwards, the water retaining sheet stretches the reset spring and drives the vertical rod, the horizontal rod and the guide cylinder to move downwards, and the horizontal rod moves downwards to play a dredging effect on the spraying port. Because guide cylinder and guide way are mutually supported, and horizontal rod and guide cylinder fixed connection are in the same place, so when the guide cylinder moves down, can drive the horizontal rod along the synchronous rotation of spiral guide way. The horizontal rod moves downwards and synchronously rotates, so that the dredging effect of the spraying opening is further improved.
As a preferable technical scheme of the invention, the bottom ends of the first rotating shaft and the second rotating shaft are rotatably provided with rolling balls which are in rolling fit with the upper surface of the bottom plate of the liquid storage tank. In the horizontal rotation process of the longitudinal stirring mechanism and the transverse stirring mechanism along with the mounting ring, the rolling balls roll on the upper surface of the bottom plate of the liquid storage tank and support the first rotating shaft and the second rotating shaft, so that the first rotating shaft and the second rotating shaft are ensured to be always in a vertical state, and the longitudinal stirring mechanism can drive limestone slurry in the liquid storage tank to generate vertical circulating flow all the time; the horizontal stirring mechanism is used for transversely stirring limestone slurry in the liquid storage tank all the time.
As a preferable technical scheme of the invention, the bottom surface of the mounting ring is fixedly provided with a sealing cylinder which is coaxial with the first rotating shaft, and the inner side surface of the sealing cylinder is tangent with the outermost end of the spiral conveying blade. A plurality of through holes are uniformly formed in the sealing barrel above the spiral conveying blades. During the rotation of the screw conveying blade, the limestone slurry in the liquid storage tank enters the sealing cylinder from the through hole in the sealing cylinder and escapes from the bottom of the sealing cylinder, so that the longitudinal stirring effect of the screw conveying blade on the limestone slurry in the liquid storage tank is improved.
As a preferred technical scheme of the invention, the lower surface of the top plate of the spraying cavity is fixedly connected with a mounting cylinder coaxial with the spraying opening through a vertical rod, and a mounting shaft is horizontally matched between the inner side walls of the mounting cylinder in a rotating manner. The even fixed mounting of installation epaxial has a plurality of elastic telescopic rod, and elastic telescopic rod's tip fixed mounting has the disk, and the disk is tangent with the inside wall that leads to the groove. Limestone slurry entering the spraying cavity enters the mounting cylinder from top to bottom, and pushes the wafer to drive the elastic telescopic rod and the mounting shaft to synchronously rotate. The disk supports when rotating under the elasticity effect of elasticity telescopic link and presses at the plectane upper surface, when spraying mouthful and logical groove intercommunication, the disk enters into logical inslot rotation, stirs the lime stone thick liquid that leads to the inslot, avoids leading to the lime stone thick liquid in the inslot to produce and blocks up.
(III) advantageous effects
The invention has at least the following beneficial effects:
(1) the desulfurization and denitrification absorption tower solves the following problems in the actual production process of the existing desulfurization and denitrification absorption tower: when the limestone slurry is stored, the limestone slurry is easy to precipitate, so that the concentration of the limestone slurry is uneven, and the absorption effect of harmful substances in the waste gas is adversely affected; the limestone slurry is easy to block the spraying port in the spraying process, so that uneven spraying of the limestone slurry is caused, and the absorption effect on harmful substances in the waste gas can be reduced.
(2) The limestone slurry in the liquid storage tank is longitudinally conveyed by the longitudinal stirring mechanism, so that the limestone slurry circularly flows in the vertical direction, and the precipitation of the limestone slurry is avoided; and the limestone slurry is transversely and rotationally stirred by the transverse stirring mechanism, so that the limestone slurry generates horizontal circulating flow, the condition that the limestone slurry is converged towards the inner side of the liquid storage tank due to the action of centrifugal force is avoided, and the concentration uniformity of the limestone slurry is further improved.
(3) According to the invention, the circular plate and the blades are driven to rotate continuously by limestone slurry, so that the spraying port and the through groove generate horizontal relative motion continuously, on one hand, horizontal shearing force is applied to the limestone slurry blocked in the spraying port, on the other hand, the circular plate periodically seals and communicates the spraying port, so that the limestone slurry in the through groove periodically applies vertical pressure to the limestone slurry in the spraying port, and the spraying port is dredged under the combined action of the horizontal shearing force and the vertical pressure.
(4) The invention drives the water retaining sheet, the vertical rod and the horizontal rod to move downwards by the impact force after the limestone slurry in the spray port falls down, and further dredges the limestone slurry in the spray port by the rotation of the horizontal rod.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a first sectional view of a desulfurization and denitrification absorption tower in an embodiment of the invention;
FIG. 2 is a second sectional view of the SOx/NOx absorber in an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a desulfurization and denitrification absorption tower A in the embodiment of the invention;
FIG. 4 is an enlarged schematic view of a desulfurization and denitrification absorption tower B in the embodiment of the invention;
FIG. 5 is an enlarged schematic view of a desulfurization and denitrification absorption tower C in an embodiment of the invention;
FIG. 6 is a plan view of a circular plate of a SOx/NOx absorber according to an embodiment of the present invention.
In the figure: 1-tower body, 2-base, 3-liquid storage tank, 4-mounting ring, 5-longitudinal stirring mechanism, 51-first rotating shaft, 52-spiral conveying blade, 53-second bevel gear, 6-transverse stirring mechanism, 61-second rotating shaft, 62-stirring plate, 63-third bevel gear, 7-connecting frame, 8-first bevel gear ring, 9-rotating motor, 10-first bevel gear, 11-roller, 12-spraying cavity, 13-infusion tube, 14-water pump, 15-second bevel gear ring, 16-spraying opening, 17-circular plate, 18-through groove, 19-blade, 20-ball, 21-reset spring, 22-water-retaining plate, 23-vertical rod, 24-horizontal rod, 25-guide groove, 26-guide cylinder, 27-rolling ball, 28-sealing cylinder, 29-through hole, 30-mounting cylinder, 31-mounting shaft, 32-elastic telescopic rod and 33-circular piece.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, the present embodiment provides a desulfurization and denitrification absorption tower, which comprises a vertical cylindrical tower body 1, wherein a base 2 is installed on the bottom surface of the tower body 1. The outer side surface of the tower body 1 is fixedly provided with an annular liquid storage tank 3 which is coaxial with the liquid storage tank, a top plate of the liquid storage tank 3 is rotatably provided with a mounting ring 4 which is coaxial with the liquid storage tank, and the bottom surface of the mounting ring 4 is provided with a longitudinal stirring mechanism 5 and a transverse stirring mechanism 6 at uniform intervals along the circumferential direction. The top surface of the mounting ring 4 is uniformly and fixedly provided with a plurality of connecting frames 7 along the circumferential direction, and the end parts of the connecting frames 7 are fixedly provided with first bevel gear rings 8 which are coaxial with the tower body 1. The top surface of the tower body 1 is fixedly provided with a rotating motor 9, and an output shaft of the rotating motor 9 is fixedly provided with a first bevel gear 10 which is meshed with the first bevel gear ring 8. A roller 11 which is matched with the top plate of the liquid storage tank 3 in a rolling way is rotatably arranged below the connecting frame 7. A cylindrical spraying cavity 12 which is coaxial with the tower body 1 is fixedly arranged in the tower body 1 through a connecting rod, and a plurality of liquid conveying pipes 13 are uniformly and fixedly arranged on the side wall of the tower body 1 along the circumferential direction. The outer end of the infusion tube 13 is positioned at the bottom of the liquid storage tank 3, the inner end of the infusion tube 13 is communicated with the spraying cavity 12, and the infusion tube 13 is provided with a water pump 14. The rotating motor 9 drives the first bevel gear 10 to rotate, so as to drive the first bevel gear ring 8, the connecting frame 7, the mounting ring 4, the longitudinal stirring mechanism 5 and the transverse stirring mechanism 6 to synchronously and horizontally rotate. The limestone slurry in the liquid storage tank 3 is longitudinally stirred while the longitudinal stirring mechanism 5 horizontally rotates, and the limestone slurry in the liquid storage tank 3 is transversely stirred while the transverse stirring mechanism 6 horizontally rotates.
The longitudinal stirring mechanism 5 includes a first rotating shaft 51, a screw conveying blade 52, and a second bevel gear 53. The first rotating shaft 51 is vertically and rotatably installed on the bottom surface of the installation ring 4, the spiral conveying blade 52 is fixedly installed on the first rotating shaft 51, and the second bevel gear 53 is fixedly installed on the first rotating shaft 51. A second bevel gear ring 15 which is meshed with the second bevel gear 53 and is coaxial with the liquid storage tank 3 is horizontally and fixedly arranged on the bottom plate of the liquid storage tank 3. The lateral stirring mechanism 6 includes a second rotating shaft 61, a stirring plate 62, and a third bevel gear 63. The second rotating shaft 61 is vertically and rotatably installed on the bottom surface of the mounting ring 4, vertical stirring plates 62 are uniformly and fixedly installed on the second rotating shaft 61 along the circumferential direction of the second rotating shaft, and a third bevel gear 63 meshed with the second bevel gear ring 15 is fixedly installed on the second rotating shaft 61. While the longitudinal stirring mechanism 5 rotates horizontally, the second bevel gear 53 and the second bevel gear ring 15 are in an engaged state, and the second bevel gear ring 15 is fixedly mounted on the bottom plate of the liquid storage tank 3, so that the first rotating shaft 51 and the spiral conveying blade 52 are driven to rotate by the second bevel gear 53. The screw conveyor blade 52 conveys the limestone slurry above the liquid storage tank 3 downward in the rotation process, and the limestone slurry below the liquid storage tank 3 is replenished upward, so that the limestone slurry inside the liquid storage tank 3 generates the circulating flow in the vertical direction. While the transverse stirring mechanism 6 rotates horizontally, the third bevel gear 63 drives the second rotating shaft 61 and the stirring plate 62 to rotate because the third bevel gear 63 and the second bevel gear 15 are in an engaged state with each other. The stirring plate 62 is rotated to generate a lateral circulation flow of the limestone slurry in the storage tank 3. The rolling balls 27 which are matched with the upper surface of the bottom plate of the liquid storage tank 3 in a rolling way are rotatably arranged at the bottom ends of the first rotating shaft 51 and the second rotating shaft 61. In the process that the longitudinal stirring mechanism 5 and the transverse stirring mechanism 6 rotate horizontally along with the mounting ring 4, the rolling balls 27 roll on the upper surface of the bottom plate of the liquid storage tank 3 and support the first rotating shaft 51 and the second rotating shaft 61, so that the first rotating shaft 51 and the second rotating shaft 61 are ensured to be in a vertical state all the time, and the longitudinal stirring mechanism 5 is ensured to drive limestone slurry in the liquid storage tank 3 to circularly flow in the vertical direction all the time; the horizontal stirring mechanism 6 is used for transversely stirring limestone slurry in the liquid storage tank 3 all the time.
A plurality of vertically through spraying ports 16 are arranged on the bottom plate of the spraying cavity 12. The upper surface of the bottom plate of the spraying cavity 12 is rotatably provided with a circular plate 17 which is coaxial with the spraying cavity, and a through groove 18 which penetrates through the circular plate 17 up and down is arranged on the position corresponding to each spraying opening 16. The upper surface of the circular plate 17 is horizontally and fixedly provided with a blade 19 at the position right below the inner end of the infusion tube 13. A plurality of balls 20 which are matched with the inner side wall of the spraying cavity 12 in a rolling way are evenly arranged on the outer side surface of the circular plate 17 along the circumferential direction. The limestone slurry in the storage tank 3 is fed into the spraying chamber 12 through the liquid conveying pipe 13 by the water pump 14. The limestone slurry pushes the blades 19 to rotate, thereby driving the circular plate 17 and the through groove 18 to rotate. In the rotation process of the circular plate 17, on one hand, horizontal shearing force is applied to limestone slurry blocked in the spraying port 16; while periodically closing and communicating the spray openings 16 so that the limestone slurry in the through slots 18 periodically applies a vertical pressure to the limestone slurry in the spray openings 16. The lower surface of the top plate of the spraying cavity 12 is fixedly connected with a mounting cylinder 30 coaxial with the spraying port 16 through a vertical rod, and a mounting shaft 31 is horizontally and rotatably matched between the inner side walls of the mounting cylinder 30. A plurality of elastic telescopic rods 32 are uniformly and fixedly mounted on the mounting shaft 31, wafers 33 are fixedly mounted at the end parts of the elastic telescopic rods 32, and the wafers 33 are tangent to the inner side wall of the through groove 18. Limestone slurry entering the spraying cavity 12 enters the mounting cylinder 30 from top to bottom, and pushes the wafer 33 to drive the elastic telescopic rod 32 and the mounting shaft 31 to synchronously rotate. The wafer 33 is pressed on the upper surface of the circular plate 17 while rotating under the action of the elastic force of the elastic telescopic rod 32, when the spraying opening 16 is communicated with the through groove 18, the wafer 33 enters the through groove 18 to rotate, limestone slurry in the through groove 18 is stirred, and the limestone slurry in the through groove 18 is prevented from being blocked.
In this embodiment, logical groove 18 is the toper, and the diameter of top notch is greater than the diameter of bottom notch to improve the speed of limestone slurry in logical groove 18, improve the initial velocity of limestone slurry entering in the mouth 16 that sprays, increase the pressure of the vertical direction that limestone slurry in logical groove 18 applyed to the limestone slurry in the mouth 16 that sprays, in order to improve the mediation effect to the limestone slurry in the mouth 16 that sprays.
In this embodiment, the lower surface of the bottom plate of the spraying cavity 12 is vertically provided with a return spring 21 at the two sides of the spraying opening 16, and the bottom of the return spring 21 is horizontally and fixedly provided with a water blocking sheet 22. The top surface of the water retaining sheet 22 is fixedly provided with a vertical rod 23, and the top of the vertical rod 23 is rotatably provided with a horizontal rod 24 positioned in the spray opening 16. A spiral guide groove 25 is arranged on the inner side wall of the spraying opening 16, and guide cylinders 26 matched with the guide groove 25 are fixedly arranged at the two ends of the horizontal rod 24. Limestone slurry sprayed from the spraying port 16 impacts the water retaining piece 22 to push the water retaining piece 22 to move downwards, the water retaining piece 22 stretches the return spring 21 and simultaneously drives the vertical rod 23, the horizontal rod 24 and the guide cylinder 26 to move downwards, and the horizontal rod 24 has a dredging effect on the spraying port 16 in the downward movement process. Since the guiding cylinder 26 is matched with the guiding groove 25, and the horizontal rod 24 is fixedly connected with the guiding cylinder 26, the guiding cylinder 26 moves downwards and simultaneously drives the horizontal rod 24 to synchronously rotate along the spiral guiding groove 25. The horizontal rod 24 synchronously rotates while moving downwards, so that the dredging effect on the spray opening 16 is further improved.
In this embodiment, the seal cylinder 28 coaxial with the first rotating shaft 51 is fixedly mounted on the bottom surface of the mounting ring 4, and the inner side surface of the seal cylinder 28 is tangent to the outermost end of the spiral conveying blade 52. A plurality of through holes 29 are uniformly formed in the sealing cylinder 28 above the spiral conveying blade 52. During the rotation of the screw conveying blade 52, the limestone slurry in the liquid storage tank 3 enters the sealing cylinder 28 from the through hole 29 on the sealing cylinder 28 and escapes from the bottom of the sealing cylinder 28 out of the sealing cylinder 28, so that the longitudinal stirring effect of the screw conveying blade 52 on the limestone slurry in the liquid storage tank 3 is improved.
The working steps of the desulfurization and denitrification absorption tower in this embodiment are as follows: the rotating motor 9 drives the first bevel gear 10 to rotate, so as to drive the first bevel gear ring 8, the connecting frame 7, the mounting ring 4, the longitudinal stirring mechanism 5 and the transverse stirring mechanism 6 to synchronously and horizontally rotate. The limestone slurry in the liquid storage tank 3 is longitudinally stirred while the longitudinal stirring mechanism 5 horizontally rotates, and the limestone slurry in the liquid storage tank 3 is transversely stirred while the transverse stirring mechanism 6 horizontally rotates. The limestone slurry in the storage tank 3 is fed into the spraying chamber 12 through the liquid conveying pipe 13 by the water pump 14. The limestone slurry pushes the blades 19 to rotate, thereby driving the circular plate 17 and the through groove 18 to rotate. In the rotation process of the circular plate 17, on one hand, horizontal shearing force is applied to limestone slurry blocked in the spraying port 16; while periodically closing and communicating the spray openings 16 so that the limestone slurry in the through slots 18 periodically applies a vertical pressure to the limestone slurry in the spray openings 16. Limestone slurry sprayed from the spraying port 16 impacts the water retaining sheet 22 to push the water retaining sheet 22 to move downwards, the water retaining sheet 22 stretches the return spring 21 and simultaneously drives the vertical rod 23, the horizontal rod 24 and the guide cylinder 26 to move downwards, and the horizontal rod 24 and the guide cylinder 26 synchronously rotate in the downward movement process, so that the effect of dredging the spraying port 16 is achieved. After the circular plate 17 seals the spraying opening 16, the vertical rod 23, the horizontal rod 24 and the guide cylinder 26 are driven by the elastic force of the return spring 21 to move upwards and return to the original position.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a SOx/NOx control absorption tower, includes vertical cylindric tower body (1), and base (2), its characterized in that are installed to tower body (1) bottom surface: an annular liquid storage tank (3) coaxial with the tower body (1) is fixedly arranged on the outer side surface of the tower body (1), a mounting ring (4) coaxial with the liquid storage tank is rotatably arranged on a top plate of the liquid storage tank (3), and longitudinal stirring mechanisms (5) and transverse stirring mechanisms (6) are uniformly arranged on the bottom surface of the mounting ring (4) at intervals along the circumferential direction of the mounting ring; a plurality of connecting frames (7) are uniformly and fixedly arranged on the top surface of the mounting ring (4) along the circumferential direction of the mounting ring, and a first bevel gear ring (8) coaxial with the tower body (1) is fixedly arranged at the end part of each connecting frame (7); a rotating motor (9) is fixedly arranged on the top surface of the tower body (1), and a first bevel gear (10) meshed with the first bevel gear ring (8) is fixedly arranged on an output shaft of the rotating motor (9); a roller (11) which is matched with the top plate of the liquid storage tank (3) in a rolling way is rotatably arranged below the connecting frame (7); a cylindrical spraying cavity (12) coaxial with the tower body (1) is fixedly arranged in the tower body (1) through a connecting rod, and a plurality of liquid conveying pipes (13) are uniformly and fixedly arranged on the side wall of the tower body (1) along the circumferential direction; the outer end of the infusion tube (13) is positioned at the bottom of the liquid storage tank (3), the inner end of the infusion tube (13) is communicated with the spraying cavity (12), and a water pump (14) is arranged on the infusion tube (13);
the longitudinal stirring mechanism (5) comprises a first rotating shaft (51), a spiral conveying blade (52) and a second bevel gear (53); the first rotating shaft (51) is vertically and rotatably arranged on the bottom surface of the mounting ring (4), a spiral conveying blade (52) is fixedly arranged on the first rotating shaft (51), and a second bevel gear (53) is fixedly arranged on the first rotating shaft (51); a second bevel gear ring (15) which is meshed with the second bevel gear (53) and is coaxial with the liquid storage tank (3) is horizontally and fixedly arranged on the bottom plate of the liquid storage tank (3); the transverse stirring mechanism (6) comprises a second rotating shaft (61), a stirring plate (62) and a third bevel gear (63); the second rotating shaft (61) is vertically and rotatably arranged on the bottom surface of the mounting ring (4), vertical stirring plates (62) are uniformly and fixedly arranged on the second rotating shaft (61) along the circumferential direction of the second rotating shaft, and a third bevel gear (63) meshed with the second bevel gear ring (15) is fixedly arranged on the second rotating shaft (61);
a bottom plate of the spraying cavity (12) is provided with a plurality of vertically through spraying ports (16); a circular plate (17) coaxial with the spraying cavity (12) is rotatably arranged on the upper surface of the bottom plate of the spraying cavity, and a through groove (18) which penetrates through the circular plate (17) up and down is formed in the position, corresponding to each spraying opening (16), of the circular plate (17); blades (19) are horizontally and fixedly arranged at the position, right below the inner end of the infusion tube (13), of the upper surface of the circular plate (17); a plurality of balls (20) which are in rolling fit with the inner side wall of the spraying cavity (12) are uniformly arranged on the outer side surface of the circular plate (17) along the circumferential direction;
the lower surface of the bottom plate of the spraying cavity (12) is vertically provided with a return spring (21) at the positions at two sides of the spraying opening (16), and the bottom of the return spring (21) is horizontally and fixedly provided with a water baffle (22); the top surface of the water retaining sheet (22) is fixedly provided with a vertical rod (23), and the top of the vertical rod (23) is rotatably provided with a horizontal rod (24) positioned in the spray opening (16); spiral guide grooves (25) are formed in the inner side wall of the spraying opening (16), and guide cylinders (26) matched with the guide grooves (25) are fixedly mounted at the two ends of the horizontal rod (24).
2. The desulfurization and denitrification absorption tower according to claim 1, characterized in that: the through groove (18) is conical, and the diameter of the top notch is larger than that of the bottom notch.
3. The desulfurization and denitrification absorption tower according to claim 1, characterized in that: the bottom ends of the first rotating shaft (51) and the second rotating shaft (61) are rotatably provided with rolling balls (27) which are matched with the upper surface of the bottom plate of the liquid storage tank (3) in a rolling way.
4. The desulfurization and denitrification absorption tower according to claim 1, characterized in that: the bottom surface of the mounting ring (4) is fixedly provided with a sealing cylinder (28) which is coaxial with the first rotating shaft (51), and the inner side surface of the sealing cylinder (28) is tangent to the outermost end of the spiral conveying blade (52); a plurality of through holes (29) are uniformly formed in the sealing cylinder (28) above the spiral conveying blade (52).
5. The desulfurization and denitrification absorption tower according to claim 1, characterized in that: the lower surface of the top plate of the spraying cavity (12) is fixedly connected with a mounting cylinder (30) coaxial with the spraying port (16) through a vertical rod, and a mounting shaft (31) is horizontally matched between the inner side walls of the mounting cylinder (30) in a rotating manner; a plurality of elastic telescopic rods (32) are uniformly and fixedly arranged on the mounting shaft (31), and wafers (33) are fixedly arranged at the end parts of the elastic telescopic rods (32); the circular sheet (33) is tangent with the inner side wall of the through groove (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010544081.7A CN111644046B (en) | 2020-06-15 | 2020-06-15 | Desulfurization and denitrification absorption tower |
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| CN202010544081.7A CN111644046B (en) | 2020-06-15 | 2020-06-15 | Desulfurization and denitrification absorption tower |
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| CN111644046B true CN111644046B (en) | 2022-05-06 |
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| KR960004611B1 (en) * | 1992-02-07 | 1996-04-09 | Babcock & Wilcox Co | Gas-liquid contact system |
| EP3202483B1 (en) * | 2014-09-29 | 2021-09-08 | Beijing SPC Environment Protection Tech Co., Ltd. | Rotational flow and sink flow-coupling integrated system for ultra-clean desulphuration and dedusting and desulphuration and dedusting method therefor |
| EP3069781B1 (en) * | 2015-03-20 | 2019-05-08 | General Electric Technology GmbH | System for sulphur removal from a flue gas |
| CN107551796A (en) * | 2017-09-15 | 2018-01-09 | 上海申第实业有限公司 | A kind of highly effective and safe flue gas spray dries desulfurizer |
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| CN207413108U (en) * | 2017-10-12 | 2018-05-29 | 重庆伊曼环保设备有限公司 | A kind of wet desulphurization absorption tower |
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| CN108434970A (en) * | 2018-03-29 | 2018-08-24 | 山东三融环保工程有限公司 | A kind of desulfuration absorbing tower with dispersion disturbing flow device |
| CN109502861A (en) * | 2018-11-06 | 2019-03-22 | 樊红梅 | A kind of chemical experiment water process all-in-one machine and processing method |
| CN110772954B (en) * | 2019-12-09 | 2020-10-27 | 铜陵铜冠神虹化工有限责任公司 | Flue gas desulfurization and denitrification treatment process |
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Effective date of registration: 20220419 Address after: 054299 No. 1, Jiantao Road, Dameng Town, Neiqiu County, Xingtai City, Hebei Province Applicant after: Hebei Jiantao Energy Development Co.,Ltd. Address before: 235200 YONGGU Light Chemical Industrial Park, Xiaoxian County, Suzhou City, Anhui Province Applicant before: Chen Wei |
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