CN114191976A - Automatic purging system for carbon black flue gas desulfurization oxidation air pipeline - Google Patents
Automatic purging system for carbon black flue gas desulfurization oxidation air pipeline Download PDFInfo
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- CN114191976A CN114191976A CN202111506165.2A CN202111506165A CN114191976A CN 114191976 A CN114191976 A CN 114191976A CN 202111506165 A CN202111506165 A CN 202111506165A CN 114191976 A CN114191976 A CN 114191976A
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- air outlet
- oxidation
- cleaning
- branch pipe
- oxidation air
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- 230000003647 oxidation Effects 0.000 title claims abstract description 130
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 130
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 53
- 230000023556 desulfurization Effects 0.000 title claims abstract description 53
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000006229 carbon black Substances 0.000 title claims abstract description 30
- 239000003546 flue gas Substances 0.000 title claims abstract description 30
- 238000010926 purge Methods 0.000 title claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims abstract description 100
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 77
- 239000000758 substrate Substances 0.000 claims description 30
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000003009 desulfurizing effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000012634 fragment Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 238000007790 scraping Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 244000309464 bull Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 101100520231 Caenorhabditis elegans plc-3 gene Proteins 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
- B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
- B05B15/5223—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline, which comprises a desulfurization tower, an oxidation fan and a PLC (programmable logic controller), wherein an air outlet end of the oxidation fan is connected with an oxidation air main pipe, the desulfurization tower is provided with oxidation air branch pipes which enter the desulfurization tower from top to bottom, the inner ends of the oxidation air branch pipes are provided with air outlet pipes, a plurality of air outlet nozzles which face downwards are arranged in the air outlet pipes, the front end of each oxidation air branch pipe is provided with a water inlet pipe communicated with the oxidation air branch pipe, the water inlet pipe is provided with an electromagnetic control valve, the front end of each oxidation air branch pipe is also provided with a flow meter for the inside of the oxidation air branch pipe, and the desulfurization tower is provided with an electric cleaning mechanism for cleaning the air outlet nozzles on the air outlet pipes. The invention can clean the air outlet nozzle without stopping, ensure the pipeline of the oxidation air of the desulfurization system to be smooth and ensure the high-efficiency and stable operation of the desulfurization system.
Description
Technical Field
The invention relates to the technical field of desulfurization, in particular to an automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline.
Background
In the limestone-gypsum wet desulphurization system for carbon black flue gas, after limestone slurry is in contact reaction with sulfur dioxide, generated calcium sulfite is oxidized into calcium sulfate by oxidizing air and then removed by a vacuum dehydrator. The existing oxidation air pipelines are uniformly distributed after entering the desulfurizing tower through a main pipe, the condition that an air outlet nozzle of an oxidation air pipe is blocked by slurry is frequently generated in the operation process, the slurry oxidation effect in the desulfurizing tower is influenced, the problems that the desulfurization efficiency is reduced, the water content of gypsum removed from a vacuum dehydrator is large and the like are caused, and the existing oxidation air pipelines can only be overhauled after the desulfurization system is stopped. Therefore, the improvement is made, and an automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline is provided.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to an automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline, which comprises a desulfurization tower, an oxidation fan and a PLC (programmable logic controller), wherein the air outlet end of the oxidation fan is connected with an oxidation air main pipe, the desulfurization tower is provided with oxidation air branch pipes which enter the desulfurization tower from top to bottom, the inner ends of the oxidation air branch pipes are provided with air outlet pipes, a plurality of air outlet nozzles which face downwards are arranged in the air outlet pipes, the front end of each oxidation air branch pipe is provided with a water inlet pipe communicated with the oxidation air branch pipes, the water inlet pipe is provided with an electromagnetic control valve, the front ends of the oxidation air branch pipes are also provided with flow meters for cleaning the interior of the oxidation air branch pipes, and the desulfurization tower is provided with an electric cleaning mechanism for cleaning the air outlet nozzles on each air outlet pipe; the flow meter, the electromagnetic control valve and the electric cleaning mechanism are electrically connected with the PLC, when the detected flow meter of the flow meter on the oxidation air branch pipe becomes small, the phenomenon that an air outlet nozzle on the oxidation air branch pipe is blocked is indicated, the PLC controls the electromagnetic control valve on the oxidation air branch pipe to be opened, a cleaning water body is introduced into the oxidation air branch pipe, and meanwhile, the electric cleaning mechanism for cleaning the air outlet nozzle on the oxidation air branch pipe is controlled to perform cleaning work.
As a preferred technical scheme of the present invention, the electric cleaning mechanism comprises a vertically downward electric lifting mechanism disposed on the desulfurization tower, a lifting end of the electric lifting mechanism is provided with a lifting plate, the air outlet pipe is provided with a through hole which is corresponding to the air outlet nozzle and is located at the top of the air outlet pipe, the air outlet pipe is provided with a butt joint pipe corresponding to the through hole, the lifting plate is provided with a plurality of cleaning rotating rods which sequentially penetrate through the butt joint pipe and the through hole and extend into the air outlet pipe, and the cleaning rotating rods are provided with sealing piston blocks which move along the inner cavity of the butt joint pipe; the end part of the cleaning rotating rod is provided with a cleaning block for cleaning the inner wall of the air outlet nozzle, and a driving mechanism for driving the cleaning rotating rod to synchronously rotate is arranged in the lifting plate.
As a preferred technical scheme of the invention, the lifting mechanism comprises a positioning frame arranged at the top of the desulfurization tower, a fixed plate is arranged on the positioning frame, a pair of vertically downward limiting polish rods is arranged at the bottom of the fixed plate, a moving plate moving up and down along the limiting polish rods is arranged between the pair of limiting polish rods, an electric telescopic rod driving the moving plate to move is arranged between the moving plate and the fixed plate, a hollow tube fixed with the top end of the lifting plate is arranged at the bottom of the moving plate, the driving mechanism comprises a transmission shaft which is arranged on the moving plate through a bearing and the end of which extends into an inner cavity of the lifting plate, the transmission shaft drives a plurality of cleaning rotating rods to synchronously rotate through a synchronous transmission mechanism, a driving motor driving the transmission shaft to rotate is arranged on the fixed plate, and the driving motor and the electric telescopic rod are electrically connected with the PLC controller.
As a preferable technical solution of the present invention, the synchronous transmission mechanism includes a first transmission bevel gear disposed at an inner end of the cleaning rotating rod and located in an inner cavity of the lifting plate, a plurality of rotating shafts located in the inner cavity of the lifting plate are installed in the inner cavity of the lifting plate, a second transmission bevel gear meshed with the first transmission bevel gear for transmission is installed on the rotating shafts, a third transmission bevel gear located in the lifting plate is installed at a shaft end of the transmission shaft, and a fourth transmission bevel gear meshed with the third transmission bevel gear for transmission is installed on the rotating shafts.
As a preferred technical scheme of the invention, the cleaning block is ellipsoidal, the diameters of the end parts of the two ends of the cleaning block are smaller than the inner diameter of the air outlet nozzle, the maximum diameter of the middle part of the cleaning block is larger than the inner diameter of the air outlet nozzle, the cleaning block is composed of a plurality of arched elastic sheets, the cross sections of the arched elastic sheets are flat, telescopic gaps for deforming the arched elastic sheets are arranged between the arched elastic sheets, and cleaning edgings for cleaning the air outlet nozzle are arranged on the two sides of each arched elastic sheet.
As a preferable technical scheme of the invention, a plurality of air outlet holes are arranged in the lateral direction of the positioning frame, and a conical water guide cover is arranged at the top of the positioning frame.
As a preferable technical scheme of the invention, each oxidation air branch pipe is provided with a pressure gauge for detecting the conveying pressure in the oxidation air branch pipe, and the pressure gauge is arranged in front of the water inlet pipe.
As a preferred technical scheme of the present invention, the moving plate includes an upper substrate and a lower substrate disposed between the limit polish rods and moving along the limit polish rods, the upper substrate is provided with a reciprocating screw rod, the reciprocating screw rod is provided with a sliding block moving along the reciprocating screw rod, the sliding block is fixed with the lower substrate through a bolt, the hollow tube is fixed on the lower substrate, the transmission shaft is mounted on the lower substrate, the driving motor is mounted on the lower substrate, and the upper substrate is provided with a servo motor driving the reciprocating screw rod to rotate.
As a preferred technical scheme of the invention, the working method of the automatic purging device for the carbon black flue gas desulfurization oxidation air pipeline comprises the steps of detecting the air flow and the conveying pressure of each oxidation air branch pipe through a flow meter and a pressure gauge, when the flow meter on one oxidation air branch pipe detects that the flow is reduced and the conveying pressure detected by the pressure gauge is increased, indicating that the air outlet nozzle on the oxidation air branch pipe is blocked, controlling an electric cleaning mechanism for cleaning the air outlet nozzle on the oxidation air branch pipe to work to clean the air outlet nozzle on the oxidation air branch pipe through a PLC (programmable logic controller), pressing down a lifting plate by controlling the electric telescopic rod to extend, driving a reciprocating screw rod to rotate by a servo motor, driving a lower base plate to reciprocate up and down, driving a motor to drive a transmission shaft to rotate, driving the rotating transmission shaft to drive a rotating shaft to rotate, the rotating shaft drives the cleaning rotating rod to rotate so as to drive the cleaning block to rotate, and the air outlet nozzle is scraped and cleaned in a reciprocating mode in the process that the reciprocating screw rod drives the lower base plate to do reciprocating motion until the flow detected by the flow meter returns to a normal value and the conveying pressure detected by the pressure gauge returns to the normal value, so that the air outlet nozzle is indicated to be cleaned.
In a preferred embodiment of the present invention, when the flow rate detected by the flow meter on one of the oxidation air branch pipes is decreased and the delivery pressure detected by the pressure gauge is increased, the flow rate detected by the flow meters on the other oxidation air branch pipes is increased, and the delivery pressure detected by the pressure gauge is increased, and the difference between the flow rates is greater than a predetermined threshold, it indicates that the flow rate detected by the flow meter on the oxidation air branch pipe with decreased flow rate is blocked.
The invention has the beneficial effects that:
1. the automatic purging device for the carbon black flue gas desulfurization oxidation air pipeline detects the air flow and the conveying pressure of each oxidation air branch pipe through a flow meter and a pressure gauge, when the flow meter on one oxidation air branch pipe detects that the flow is reduced and the conveying pressure detected by the pressure gauge is increased, the phenomenon that an air outlet nozzle on the oxidation air branch pipe is blocked is indicated, a PLC controller controls an electric cleaning mechanism for cleaning the air outlet nozzle on the oxidation air branch pipe to work for cleaning the air outlet nozzle on the oxidation air branch pipe, a lifting plate is pressed downwards by controlling the extension of an electric telescopic rod, a servo motor drives a reciprocating screw rod to rotate at the same time, so as to drive a lower substrate to reciprocate up and down, a driving motor drives a transmission shaft to rotate at the same time, the rotating transmission shaft drives a rotating shaft to rotate, and then the rotating shaft drives a cleaning rotating rod to rotate, and when the flow meter on one of the oxidation air branch pipes detects that the flow rate is reduced and the conveying pressure detected by the pressure meter is increased, the flow meters on the other oxidation air branch pipes detect that the flow rate is increased, the conveying pressure detected by the pressure meter is increased, and the difference of the flow rates is larger than a set threshold value, the air outlet nozzle on the oxidation air branch pipe with the flow rate reduced detected by the flow meter is indicated to generate a hole blocking phenomenon, so that the influence of the self error of a single flow meter is eliminated to cause misjudgment.
2. Thereby drive electronic wiper mechanism through setting up electric lift mechanism and go up and down among this kind of carbon black flue gas desulfurization oxidation tuber pipe line automatic purging device, when needs clear up the air-out mouth, electric lift mechanism drives the lifter plate and descends, thereby insert the clearance piece of cleaning bull stick tip in the air-out mouth, clear up the air-out mouth of jam, the back is accomplished in the clearance, then electric lift mechanism resets, thereby it rises to drive the lifter plate, take out the clearance piece from the air-out mouth, avoid reducing the appearance effect of air-out mouth.
3. According to the automatic purging device for the carbon black flue gas desulfurization oxidation air pipe line, each cleaning rotating rod is driven to rotate through the arrangement of the specific synchronous transmission mechanism, the air outlet nozzle is cleaned, the transmission shaft is driven to rotate mainly through the driving motor, the transmission shaft drives the rotation shaft to rotate through the meshing of the third transmission bevel gear and the fourth transmission bevel gear, the rotating rotation shaft drives the cleaning rotating rods to rotate through the first transmission bevel gear and the second transmission bevel gear, the cleaning blocks are driven to rotate, the air outlet nozzle is cleaned, the automatic purging device has the advantage of being good in cleaning effect, and shutdown maintenance is not needed.
4. This kind of clearance piece is the ellipsoid form among the automatic device that sweeps of carbon black flue gas desulfurization oxidation tuber pipe line, just the both ends tip diameter of clearance piece all is less than the internal diameter of tuyere, the biggest footpath in middle part of clearance piece is greater than the internal diameter of tuyere, the clearance piece comprises a plurality of arch shell fragments, the cross-section of arch shell fragment is flat, and is equipped with the flexible clearance that supplies arch shell fragment to warp between the arch shell fragment, the both sides of arch shell fragment are equipped with the clearance strake of scraping the tuyere, are convenient for insert the clearance piece in the tuyere to under the elastic action of arch shell fragment, the arch shell fragment contacts with the inner wall of tuyere all the time to better clean effect has.
5. The movable plate in the automatic purging device for the carbon black flue gas desulfurization oxidation air pipeline comprises an upper base plate and a lower base plate which are arranged between limiting polished rods and move along the limiting polished rods, a reciprocating lead screw is arranged on the upper base plate, a sliding block which moves along the reciprocating lead screw is arranged on the reciprocating lead screw, the sliding block is fixed with the lower base plate through a bolt, a hollow pipe is fixed on the lower base plate, a transmission shaft is arranged on the lower base plate, a driving motor is arranged on the lower base plate, a servo motor which drives the reciprocating lead screw to rotate is arranged on the upper base plate, the lifting plate is pressed downwards by controlling the extension of an electric telescopic rod, meanwhile, the servo motor drives the reciprocating lead screw to rotate, further drives the lower base plate to reciprocate up and down, simultaneously, the driving motor drives the transmission shaft to rotate, the rotating transmission shaft drives a rotating shaft to rotate, and then the rotating shaft drives a cleaning rotating rod to rotate, thereby drive the clearance piece and rotate, then drive the in-process of infrabasal plate reciprocating motion at reciprocal lead screw, scrape to air-out nozzle reciprocal and get the clearance, have better clearance effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an automatic purging system of an oxidation air pipeline for desulfurization of carbon black flue gas according to the present invention;
FIG. 2 is a schematic view of a partial structure of an electric cleaning mechanism of an automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline of the present invention;
FIG. 3 is a schematic structural view of an electric lifting mechanism of an automatic purging system of a carbon black flue gas desulfurization oxidation air pipeline of the present invention;
FIG. 4 is a schematic structural diagram of a cleaning rotating rod of an automatic purging system of a carbon black flue gas desulfurization oxidation air pipeline of the invention;
FIG. 5 is a schematic structural diagram of a cleaning edge strip of the automatic purging system for a carbon black flue gas desulfurization oxidation air pipeline.
In the figure: 1. a desulfurizing tower; 2. an oxidation fan; 3. a PLC controller; 4. an oxidation wind main pipe; 5. oxidizing the air branch pipe; 6. an air outlet pipe; 7. an air outlet nozzle; 8. a water inlet pipe; 9. an electromagnetic control valve; 10. a flow meter; 11. an electric cleaning mechanism; 12. an electric lifting mechanism; 13. a lifting plate; 14. a through hole; 15. butt-joint pipes; 16. cleaning the rotating rod; 17. a sealing piston block; 18. cleaning the block; 19. a drive mechanism; 20. a positioning frame; 21. a fixing plate; 22. a limit polished rod; 23. moving the plate; 24. an electric telescopic rod; 25. a hollow tube; 26. a drive shaft; 27. a synchronous transmission mechanism; 28. a first drive bevel gear; 29. a rotating shaft; 30. a second transmission bevel gear; 31. a third transmission bevel gear; 32. a fourth drive bevel gear; 33. a drive motor; 34. an arched shrapnel; 35. a telescoping gap; 36. cleaning the edge strips; 37. an air outlet; 38. a water guide cover; 39. a pressure gauge; 40. an upper substrate; 41. a lower substrate; 42. a reciprocating screw rod; 43. a slider; 44. a servo motor.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-5, the automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline comprises a desulfurization tower 1, an oxidation fan 2 and a PLC controller 3, wherein an air outlet end of the oxidation fan 2 is connected with an oxidation air main pipe 4, the desulfurization tower 1 is provided with an oxidation air branch pipe 5 which enters the desulfurization tower 1 from top to bottom, an air outlet pipe 6 is arranged at the inner end of the oxidation air branch pipe 5, a plurality of downward air outlet nozzles 7 are arranged in the air outlet pipe 6, the front end of each oxidation air branch pipe 5 is provided with an inlet pipe 8 communicated with the oxidation air branch pipe 5, the inlet pipe 8 is provided with an electromagnetic control valve 9, the front end of the oxidation air branch pipe 5 is further provided with a flowmeter 10 which is arranged inside the oxidation air branch pipe 5, and the desulfurization tower 1 is provided with an electric cleaning mechanism 11 which cleans the air outlet nozzle on each air outlet pipe; flowmeter 10, solenoid electric valve 9 and electronic wiper mechanism 11 all are connected with PLC controller 3 electricity, and the flowmeter that detects of flowmeter 10 on oxidation air branch pipe 5 diminishes, then indicates that air outlet 7 on this oxidation air branch pipe 5 takes place the stifled hole phenomenon, then solenoid electric valve 9 on PLC controller 3 control this oxidation air branch pipe 5 opens, lets in the washing water to this oxidation air branch pipe 5, and the electronic wiper mechanism 11 of control to air outlet 7 clearance on this oxidation air branch pipe 5 carries out cleaning work simultaneously. The air flow and the conveying pressure of each oxidation air branch pipe 5 are detected through a flow meter 10 and a pressure gauge, when the flow meter 10 on one oxidation air branch pipe 5 detects that the flow is reduced and the conveying pressure detected by the pressure gauge is increased, the phenomenon that the air outlet nozzle 7 on the oxidation air branch pipe 5 is blocked is shown, an electric cleaning mechanism 11 for cleaning the air outlet nozzle 7 on the oxidation air branch pipe 5 is controlled by a PLC (programmable logic controller) 3 to operate to clean the air outlet nozzle 7 on the oxidation air branch pipe 5, the lifting plate 13 is pressed downwards by controlling the extension of an electric telescopic rod, a servo motor drives a reciprocating screw rod to rotate at the same time, so as to drive a lower substrate to reciprocate up and down, a driving motor drives a transmission shaft to rotate at the same time, the rotating transmission shaft drives a rotating shaft to rotate, the rotating shaft drives a cleaning rotating rod to rotate, so as to drive a cleaning block to rotate, and in the process that the reciprocating screw rod drives the lower base plate to reciprocate, the air outlet nozzle 7 is scraped and cleaned in a reciprocating manner until the flow detected by the flow meter 10 returns to a normal value, and the conveying pressure detected by the pressure gauge returns to a normal value, which indicates that the air outlet nozzle 7 is cleaned, wherein when the flow meter 10 on one of the oxidation air branch pipes 5 detects that the flow rate is reduced and the conveying pressure detected by the pressure gauge is increased, the flow meters 10 on the other oxidation air branch pipes 5 detect that the flow rate is increased, and the conveying pressure detected by the pressure gauge is increased and the difference of the flow rates is greater than a set threshold value, the air outlet nozzle 7 on the oxidation air branch pipe 5, which detects that the flow rate is reduced, is indicated to generate a hole blocking phenomenon, so that the misjudgment caused by the influence of the self error of a single flow meter 10 is eliminated.
The electric cleaning mechanism 11 comprises an electric lifting mechanism 12 which is arranged on the desulfurizing tower 1 and vertically faces downwards, a lifting end of the electric lifting mechanism 12 is provided with a lifting plate 13, the air outlet pipe 6 is provided with a through hole 14 which is just corresponding to the air outlet nozzle 7 and is positioned at the top of the air outlet pipe 6, the air outlet pipe 6 is provided with a butt joint pipe 15 corresponding to the through hole 14, the lifting plate 13 is provided with a plurality of cleaning rotating rods 16 which sequentially penetrate through the butt joint pipe 15 and the through hole 14 and extend into the air outlet pipe 6, and the cleaning rotating rods 16 are provided with sealing piston blocks 17 which move along the inner cavity of the butt joint pipe 15; the end part of the cleaning rotating rod 16 is provided with a cleaning block 18 for cleaning the inner wall of the air outlet nozzle 7, and a driving mechanism 19 for driving the cleaning rotating rod 16 to synchronously rotate is arranged in the lifting plate 13. Thereby drive electronic wiper mechanism 11 through setting up electric lift mechanism 12 and go up and down, when needs clear up air outlet 7, electric lift mechanism 12 drives lifter plate 13 and descends, thereby insert the clearance piece of clean bull stick tip in air outlet 7, come to clear up the air outlet 7 of jam, the back is accomplished in the clearance, then electric lift mechanism 12 resets, thereby it rises to drive lifter plate 13, take out the clearance piece from air outlet 7, avoid reducing the appearance effect of air outlet 7.
The lifting mechanism 12 comprises a positioning frame 20 arranged at the top of the desulfurizing tower 1, a fixing plate 21 is arranged on the positioning frame 20, a pair of vertically downward limiting polish rods 22 is arranged at the bottom of the fixing plate 21, a moving plate 23 moving up and down along the limiting polish rods 22 is arranged between the pair of limiting polish rods 22, an electric telescopic rod 24 for driving the moving plate 23 to move is arranged between the moving plate 23 and the fixed plate 21, the bottom of the moving plate 23 is provided with a hollow tube 25 fixed with the top end of the lifting plate 13, the driving mechanism 19 comprises a transmission shaft 26 which is arranged on the moving plate 23 through a bearing and the end part of the transmission shaft extends into the inner cavity of the lifting plate 13, the transmission shaft 26 drives a plurality of cleaning rotating rods 16 to synchronously rotate through a synchronous transmission mechanism 27, the fixed plate is provided with a driving motor 33 for driving the transmission shaft to rotate, and the driving motor 33 and the electric telescopic rod 24 are electrically connected with the PLC 3.
The synchronous transmission mechanism 27 comprises a first transmission bevel gear 28 which is arranged at the inner end part of the cleaning rotating rod 16 and is positioned in the inner cavity of the lifting plate 13, a plurality of rotating shafts 29 which are positioned in the lifting plate 13 are installed in the inner cavity of the lifting plate 13, a second transmission bevel gear 30 which is in meshing transmission with the first transmission bevel gear 28 is installed on each rotating shaft 29, a third transmission bevel gear 31 which is positioned in the lifting plate 13 is installed at the shaft end of the transmission shaft 26, and a fourth transmission bevel gear 32 which is in meshing transmission with the third transmission bevel gear 31 is installed on each rotating shaft 29. The cleaning nozzle 7 is cleaned by arranging a specific synchronous transmission mechanism to drive each cleaning rotating rod to rotate, the transmission shaft is driven to rotate by a driving motor, the transmission shaft drives the rotating shaft to rotate through the meshing of the third transmission bevel gear and the fourth transmission bevel gear, the rotating shaft drives the cleaning rotating rods to rotate through the first transmission bevel gear and the second transmission bevel gear, and therefore the cleaning block is driven to rotate, the cleaning nozzle 7 is cleaned, the cleaning effect is good, and the cleaning nozzle is free of shutdown maintenance.
The utility model discloses a cleaning device, including cleaning block 18, air outlet nozzle 7, the internal diameter of air outlet nozzle 7, cleaning block 18 is ellipsoid form, just the both ends tip diameter of cleaning block 18 all is less than the internal diameter of air outlet nozzle 7, the biggest footpath in middle part of cleaning block 18 is greater than the internal diameter of air outlet nozzle 7, cleaning block 18 comprises a plurality of arch shell fragment 34, the cross-section of arch shell fragment 34 is flat, and is equipped with the flexible clearance 35 that supplies arch shell fragment 34 to warp between the arch shell fragment 34, the both sides of arch shell fragment 34 are equipped with the clearance strake 36 of scraping air outlet nozzle 7, are convenient for insert the cleaning block in the air outlet nozzle 7 to under the elastic action of arch shell fragment, the arch shell fragment contacts with the inner wall of air outlet nozzle 7 all the time to better clean effect has.
The lateral direction of locating rack 20 is equipped with a plurality of exhaust vents 37, the top of locating rack 20 is equipped with conical water guide cover 38.
Each oxidation air branch pipe 5 is provided with a pressure gauge 39 for detecting the conveying pressure inside the oxidation air branch pipe 5, and the pressure gauge 39 is arranged in front of the water inlet pipe 8.
The moving plate 23 comprises an upper substrate 40 and a lower substrate 41 which are arranged between the limiting polished rods 22 and move along the limiting polished rods 22, reciprocating screw rods 42 are mounted on the upper substrate 40, sliding blocks 43 moving along the reciprocating screw rods 42 are arranged on the reciprocating screw rods 42, the sliding blocks 43 are fixed with the lower substrate 41 through bolts, hollow tubes 25 are fixed on the lower substrate 41, transmission shafts 26 are mounted on the lower substrate 41, driving motors 33 are mounted on the lower substrate 41, and servo motors 44 driving the reciprocating screw rods 42 to rotate are arranged on the upper substrate 40. Extend through controlling this electric telescopic handle, push down lifter plate 13, servo motor drives reciprocal lead screw simultaneously and rotates, and then drives infrabasal plate up-and-down motion, driving motor drives the transmission shaft simultaneously and rotates, the pivoted transmission shaft then drives the axis of rotation and rotates, then the axis of rotation drives clean bull stick and rotates, thereby drive the rotation of clearance piece, then drive the in-process of infrabasal plate reciprocating motion at reciprocal lead screw, carry out reciprocal scraping and get the clearance to air outlet nozzle 7, better clearance effect has.
The working method of the automatic purging device for the carbon black flue gas desulfurization oxidation air pipeline comprises the steps of detecting the air flow and the conveying pressure of each oxidation air branch pipe through a flow meter and a pressure gauge, when the flow meter on one oxidation air branch pipe detects that the flow is reduced and the conveying pressure detected by the pressure gauge is increased, indicating that the hole blocking phenomenon occurs on the air outlet nozzle on the oxidation air branch pipe, controlling an electric cleaning mechanism for cleaning the air outlet nozzle on the oxidation air branch pipe by a PLC (programmable logic controller), operating to clean the air outlet nozzle on the oxidation air branch pipe, pressing down a lifting plate by controlling the electric telescopic rod, simultaneously driving a reciprocating screw rod to rotate by a servo motor, further driving a lower substrate to reciprocate up and down, simultaneously driving the motor to drive a transmission shaft to rotate, driving a rotating shaft to rotate, driving the rotating shaft to drive a cleaning rotating rod to rotate, thereby drive the clearance piece and rotate, then in the in-process of reciprocal lead screw drive infrabasal plate reciprocating motion, carry out reciprocal scraping clearance to the air-out nozzle, when the flowmeter detected the flow and recovered to the normal value, and the delivery pressure that the manometer detected also recovered to the normal value, then indicate that this air-out nozzle has been cleared up.
When the flow meter on one of the oxidation air branch pipes detects that the flow rate is reduced and the conveying pressure detected by the pressure gauge is increased, the flow meters on the other oxidation air branch pipes detect that the flow rate value is increased, and the conveying pressure detected by the pressure gauge is increased and the difference of the flow rate values is larger than a set threshold value, the phenomenon that the air outlet nozzle on the oxidation air branch pipe with the reduced flow rate is blocked by the flow meter is indicated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. 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 (10)
1. The utility model provides an automatic purging system of carbon black flue gas desulfurization oxidation tuber pipe line, includes desulfurizing tower (1), oxidation fan (2) and PLC controller (3), its characterized in that: the air outlet end of the oxidation fan (2) is connected with an oxidation air main pipe (4), the desulfurization tower (1) is provided with an oxidation air branch pipe (5) which enters the desulfurization tower (1) from top to bottom, the inner end of the oxidation air branch pipe (5) is provided with an air outlet pipe (6), the air outlet pipe (6) is internally provided with a plurality of air outlet nozzles (7) which face downwards, the front end of each oxidation air branch pipe (5) is provided with an inlet pipe (8) communicated with the oxidation air branch pipe (5), the inlet pipe (8) is provided with an electromagnetic control valve (9), the front end of each oxidation air branch pipe (5) is also provided with a flowmeter (10) inside the oxidation air branch pipe (5), and the desulfurization tower (1) is provided with an electric cleaning mechanism (11) for cleaning the air outlet nozzles on the air outlet pipes; flowmeter (10), solenoid electric valve (9) and electronic wiper mechanism (11) all are connected with PLC controller (3) electricity, and the flowmeter that detects of flowmeter (10) on oxidation wind branch pipe (5) diminishes, then indicates that air outlet nozzle (7) on this oxidation wind branch pipe (5) take place stifled hole phenomenon, and solenoid electric valve (9) on this oxidation wind branch pipe (5) of PLC controller (3) control are opened, lets in the washing water in to this oxidation wind branch pipe (5), and the electronic wiper mechanism (11) of air outlet nozzle (7) clearance on this oxidation wind branch pipe (5) of simultaneous control carry out cleaning work.
2. The automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline according to claim 1, wherein the electric cleaning mechanism (11) comprises an electric lifting mechanism (12) which is arranged on the desulfurization tower (1) and faces downwards vertically, a lifting plate (13) is arranged at the lifting end of the electric lifting mechanism (12), a through hole (14) which corresponds to the air outlet nozzle (7) and is positioned at the top of the air outlet pipe (6) is arranged on the air outlet pipe (6), a butt joint pipe (15) which corresponds to the through hole (14) is arranged on the air outlet pipe (6), a plurality of cleaning rotating rods (16) which sequentially penetrate through the butt joint pipe (15) and the through hole (14) and extend into the air outlet pipe (6) are arranged on the lifting plate (13), and a sealing piston block (17) which moves along the inner cavity of the butt joint pipe (15) is arranged on the cleaning rotating rods (16); the end part of the cleaning rotating rod (16) is provided with a cleaning block (18) for cleaning the inner wall of the air outlet nozzle (7), and a driving mechanism (19) for driving the cleaning rotating rod (16) to synchronously rotate is arranged in the lifting plate (13).
3. The automatic purging system of the carbon black flue gas desulfurization oxidation air pipeline according to claim 2, characterized in that the lifting mechanism (12) comprises a positioning frame (20) arranged at the top of the desulfurization tower (1), a fixed plate (21) is arranged on the positioning frame (20), a pair of limiting polish rods (22) vertically downward is arranged at the bottom of the fixed plate (21), a moving plate (23) moving up and down along the limiting polish rods (22) is arranged between the pair of limiting polish rods (22), an electric telescopic rod (24) driving the moving plate (23) to move is arranged between the moving plate (23) and the fixed plate (21), a hollow tube (25) fixed with the top end of the lifting plate (13) is arranged at the bottom of the moving plate (23), the driving mechanism (19) comprises a transmission shaft (26) which is arranged on the moving plate (23) through a bearing and the end of which extends into the inner cavity of the lifting plate (13), the transmission shaft (26) drives a plurality of cleaning rotating rods (16) to rotate synchronously through a synchronous transmission mechanism (27), a driving motor (33) for driving the transmission shaft to rotate is arranged on the fixing plate, and the driving motor (33), the electric telescopic rod (24) and the PLC (3) are electrically connected.
4. The automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline according to claim 3, wherein the synchronous transmission mechanism (27) comprises a first transmission bevel gear (28) which is arranged at the inner end of the cleaning rotating rod (16) and is positioned in the inner cavity of the lifting plate (13), a plurality of rotating shafts (29) which are positioned inside the lifting plate (13) are installed in the inner cavity of the lifting plate (13), a second transmission bevel gear (30) which is in meshing transmission with the first transmission bevel gear (28) is installed on each rotating shaft (29), a third transmission bevel gear (31) which is positioned in the lifting plate (13) is installed at the shaft end of each transmission shaft (26), and a fourth transmission bevel gear (32) which is in meshing transmission with the third transmission bevel gear (31) is installed on each rotating shaft (29).
5. The automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline according to claim 2, wherein the cleaning block (18) is ellipsoidal, the diameters of the end parts of the two ends of the cleaning block (18) are smaller than the inner diameter of the air outlet nozzle (7), the maximum diameter of the middle part of the cleaning block (18) is larger than the inner diameter of the air outlet nozzle (7), the cleaning block (18) is composed of a plurality of arched elastic sheets (34), the cross sections of the arched elastic sheets (34) are flat, telescopic gaps (35) for deformation of the arched elastic sheets (34) are arranged between the arched elastic sheets (34), and cleaning strips (36) for cleaning the air outlet nozzle (7) are arranged on the two sides of the arched elastic sheets (34).
6. The automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline according to claim 3, characterized in that a plurality of air outlet holes (37) are arranged in the lateral direction of the positioning frame (20), and a tapered water guide cover (38) is arranged at the top of the positioning frame (20).
7. The automatic purging system for the carbon black flue gas desulfurization oxidation air pipeline according to claim 1, wherein a pressure gauge (39) for detecting the conveying pressure inside the oxidation air branch pipe (5) is arranged on each oxidation air branch pipe (5), and the pressure gauge (39) is arranged in front of the water inlet pipe (8).
8. The automatic purging system of the carbon black flue gas desulfurization oxidation air pipeline according to claim 1, wherein the moving plate (23) comprises an upper substrate (40) and a lower substrate (41) which are arranged between the limiting polished rods (22) and move along the limiting polished rods (22), the upper substrate (40) is provided with a reciprocating screw rod (42), the reciprocating screw rod (42) is provided with a sliding block (43) which moves along the reciprocating screw rod (42), the sliding block (43) is fixed with the lower substrate (41) through a bolt, the hollow tube (25) is fixed on the lower substrate (41), the transmission shaft (26) is arranged on the lower substrate (41), the driving motor (33) is arranged on the lower substrate (41), and the upper substrate (40) is provided with a servo motor (44) which drives the reciprocating screw rod (42) to rotate.
9. The automatic purging system of the carbon black flue gas desulfurization and oxidation air pipeline according to any one of claims 1 to 8, wherein the automatic purging device of the carbon black flue gas desulfurization and oxidation air pipeline operates by detecting the air flow and the delivery pressure of each oxidation air branch pipe through a flow meter and a pressure gauge, when the flow meter on one oxidation air branch pipe detects that the flow rate is reduced and the delivery pressure detected by the pressure gauge is increased, it indicates that the hole plugging phenomenon occurs on the air outlet nozzle on the oxidation air branch pipe, the PLC controller controls the electric cleaning mechanism for cleaning the air outlet nozzle on the oxidation air branch pipe to clean the air outlet nozzle on the oxidation air branch pipe, the lifting plate is pressed down by controlling the electric telescopic rod to extend, and the servo motor drives the reciprocating screw rod to rotate and further drive the lower substrate to reciprocate up and down, meanwhile, the driving motor drives the transmission shaft to rotate, the rotating transmission shaft drives the rotating shaft to rotate, the rotating shaft drives the cleaning rotating rod to rotate, so that the cleaning block is driven to rotate, the air outlet nozzle is scraped and cleaned in a reciprocating mode in the process that the reciprocating screw rod drives the lower base plate to reciprocate, and the air outlet nozzle is indicated to be cleaned when the flow meter detects that the flow rate returns to a normal value and the conveying pressure detected by the pressure gauge returns to the normal value.
10. The system of claim 9, wherein when the flow meter of one of the branch pipes detects a decrease in flow rate and the delivery pressure detected by the pressure gauge increases, the flow meters of the other branch pipes detect an increase in flow rate, and the difference in flow rate values is greater than a predetermined threshold, the system indicates that the flow meter detects a blockage of the nozzle of the branch pipe.
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| CN202111506165.2A CN114191976B (en) | 2021-12-10 | 2021-12-10 | Automatic purging system for carbon black flue gas desulfurization and oxidation air pipe line |
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| CN202111506165.2A CN114191976B (en) | 2021-12-10 | 2021-12-10 | Automatic purging system for carbon black flue gas desulfurization and oxidation air pipe line |
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| CN114191976B CN114191976B (en) | 2024-08-06 |
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| CN114191976B (en) | 2024-08-06 |
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