LU503722B1 - Desulfurization absorption tower with variable frequency regulated slurry circulating pump - Google Patents
Desulfurization absorption tower with variable frequency regulated slurry circulating pump Download PDFInfo
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- LU503722B1 LU503722B1 LU503722A LU503722A LU503722B1 LU 503722 B1 LU503722 B1 LU 503722B1 LU 503722 A LU503722 A LU 503722A LU 503722 A LU503722 A LU 503722A LU 503722 B1 LU503722 B1 LU 503722B1
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- Prior art keywords
- absorption tower
- desulfurization absorption
- circulating pump
- slurry circulating
- desulfurization
- Prior art date
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 102
- 230000023556 desulfurization Effects 0.000 title claims abstract description 102
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 85
- 239000002002 slurry Substances 0.000 title claims abstract description 69
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 17
- 238000007790 scraping Methods 0.000 claims abstract description 65
- 239000006185 dispersion Substances 0.000 claims abstract description 39
- 239000007921 spray Substances 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 229920000742 Cotton Polymers 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 28
- 239000003595 mist Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- 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
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/014—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements with curved filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The present application discloses a desulfurization absorption tower with a variable frequency regulated slurry circulating pump, and relates to the field of wet desulfurization. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump includes a desulfurization absorption tower. A base is fixed at the bottom of the desulfurization absorption tower. An air inlet pipe penetrating through one side of the desulfurization absorption tower is provided in the middle of the desulfurization absorption tower. A control box is arranged below the air inlet pipe. A variable-frequency drive is arranged in the control box. A cleaning component is provided according to the present application. When the motor operates to drive the screw rod to rotate, the dispersion net is driven to move along the thread, and because the scraping ring is in sliding fit with the sliding grooves through the sliding blocks, the dispersion net and the scraping ring can be adjusted vertically. The inner wall of the desulfurization absorption tower can be scraped along with the adjustment of the height of the scraping ring, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower are scraped off, and the subsequent desulfurization of the desulfurization absorption tower is not affected. The situation that the dust mixed in the flue gas and the water droplets in slurry spray adhere to an inner wall of the desulfurization absorption tower to form dirt and affect the subsequent desulfurization effect is avoided.
Description
DESULFURIZATION ABSORPTION TOWER WITH VARIABLE FREQUENCY
REGULATED SLURRY CIRCULATING PUMP
[0001] The present application relates to the technical field of wet desulphurization, and in particular to a desulfurization absorption tower with a variable frequency regulated slurry circulating pump.
[0002] Wet desulfurization process is the most widely used flue gas desulfurization technology in coal-fired power plants in China. Flue gas desulfurization is currently the mainstream desulfurization process in China, where the slurry circulating pump is the main energy-consuming equipment, and slurry circulation volume is the main parameter affecting the desulfurization efficiency.
[0003] The Chinese patent No. CN213761257U disclosed a desulfurization absorption tower with a variable frequency regulated slurry circulating pump. According to the desulfurization absorption tower disclosed therein, when the unit load or SO2 concentration at the inlet decreases, the control system adjusts the rotating speed of the slurry circulating pump to change the circulation volume of slurry and the thickness of the liquid-holding layer of the liquid-holding enhanced mass transfer device, thereby reducing the power consumption of the circulating pump and the resistance of the absorption tower. However, in the process of using the desulfurization absorption tower, the dust mixed in the flue gas and the water droplets in slurry spray easily adhere to an inner wall of the desulfurization absorption tower. The dirt on the inner wall accumulates and thickens as time goes by, further affecting the subsequent desulfurization effect.
[0004] Based on this, an object of the present application is to provide a desulfurization absorption tower with a variable frequency regulated slurry circulating pump, so as to solve the technical problems that the dust mixed in the flue gas and the water droplets in slurry -1-
spray adhere to an inner wall of the desulfurization absorption tower to form dirt and affect the subsequent desulfurization effect.
[0005] In order to achieve the above object, the following technical solutions are provided according to the present application. À desulfurization absorption tower with a variable frequency regulated slurry circulating pump, includes a desulfurization absorption tower. A base is fixed at the bottom of the desulfurization absorption tower. An air inlet pipe penetrating through one side of the desulfurization absorption tower is provided in the middle of the desulfurization absorption tower. A control box is arranged below the air inlet pipe. A variable-frequency drive is arranged in the control box. An air outlet pipe penetrating through the other side of the desulfurization absorption tower is provided at an upper part of the desulfurization absorption tower. A sealing door is arranged in the middle of the outer surface of the desulfurization absorption tower. A motor is arranged in the middle of the bottom of the desulfurization absorption tower. An output end of the motor is connected with a screw rod. A cleaning component is arranged above an outer surface of the screw rod, and a liquid guiding component is arranged below the outer surface of the screw rod.
[0006] Further, a slurry circulating pump is arranged below the air outlet pipe. A liquid inlet end and a liquid outlet end of the slurry circulating pump are both connected with liquid conveying pipes. One end of one of the liquid conveying pipes far away from the liquid outlet end of the slurry circulating pump is connected with a spray plate. A mist eliminator is mounted above the spray plate.
[0007] By adopting the above technical solution, the operation of the slurry circulating pump can transport the slurry located at an inner lower part of the desulfurization absorption tower to the spray plate through the liquid conveying pipe for spraying and thereby desulfurizing the flue gas; meanwhile, the mist eliminator can dehumidify the flue gas and remove water mist.
[0008] Further, the control box is electrically connected with the slurry circulating pump through the variable-frequency drive, and the slurry circulating pump is provided with a frequency varying structure.
[0009] By adopting the above technical solution, the control box can perform variable frequency control for the slurry circulating pump with the variable-frequency drive, achieving the object of variable frequency regulation. -2-
[0010] Further, the cleaning component includes a dispersion net sleeved at an upper part of the outer surface of the screw rod, where a scraping ring is fixed along the circumference of the top of the dispersion net, and multiple sliding blocks are fixed along the circumference of the scraping ring.
[0011] By adopting the above technical solution, when the motor operates to drive the screw rod to rotate, the dispersion net is driven to move along the thread, and because the scraping ring is in sliding fit with the sliding grooves through the sliding blocks, the dispersion net and the scraping ring can be adjusted vertically. The inner wall of the desulfurization absorption tower can be scraped along with the adjustment of the height of the scraping ring, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower are scraped off, and the subsequent desulfurization of the desulfurization absorption tower is not affected.
[0012] Further, multiple sliding grooves fitting the sliding blocks are arranged on the inner wall of the desulfurization absorption tower, and the scraping ring is in sliding fit with the sliding grooves through the sliding blocks.
[0013] By adopting the above technical solution, the scraping ring slides along the sliding grooves via the sliding blocks.
[0014] Further, the circumference of the scraping ring abuts against the inner wall of the desulfurization absorption tower, and the inner middle of the dispersion net is threaded to the screw rod.
[0015] By adopting the above technical solution, dust and water stains adhered to the inner wall of the desulfurization absorption tower can be scraped off by adjusting the height of the scraping ring.
[0016] Further, the liquid guiding component includes a permeable cotton plate sleeved at a lower part of the outer surface of the screw rod; scraping rods fixed at a lower part of the screw rod are arranged on two sides of the screw rod and are arranged above the permeable cotton plate.
[0017] By adopting the above technical solution, after desulfurization of the flue gas by slurry spray, the slurry is filtered by the permeable cotton plate, so that impurities are left on the permeable cotton plate, and the slurry is stored in the inner lower part of the desulfurization absorption tower for subsequent use. The scraping rods are driven to rotate -3-
along with the rotation of the screw rod, so that the top of the permeable cotton plate is scraped by the bottom of the scraping rods, and the permeable cotton plate is not easily blocked to affect the subsequent filtration. Besides, as the dispersion net and the scraping ring move downwards, the top of the scraping rods further scrapes the bottom of the dispersion net, thereby removing the slurry on the dispersion net and facilitating the backflow and collection of the slurry.
[0018] Further, the bottom of the scraping rods abuts against the top of the permeable cotton plate, and the top of the scraping rods is matched with the bottom of the dispersion net.
[0019] By adopting the above technical solution, the scraping rods can scrape the top of the permeable cotton plate and the bottom of the dispersion net.
[0020] In summary, the present application mainly has the following beneficial effects.
[0021] 1. A cleaning component is provided according to the present application. When the motor operates to drive the screw rod to rotate, the dispersion net is driven to move along the thread, and because the scraping ring is in sliding fit with the sliding grooves through the sliding blocks, the dispersion net and the scraping ring can be adjusted vertically. The inner wall of the desulfurization absorption tower can be scraped along with the adjustment of the height of the scraping ring, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower are scraped off, and the subsequent desulfurization of the desulfurization absorption tower is not affected. The situation that the dust mixed in the flue gas and the water droplets in slurry spray adhere to an inner wall of the desulfurization absorption tower to form dirt and affect the subsequent desulfurization effect, is avoided.
[0022] 2. A liquid guiding component is provided according to the present application. After desulfurization of the flue gas by slurry spray, the slurry is filtered by the permeable cotton plate, so that impurities are left on the permeable cotton plate, and the slurry is stored in the inner lower part of the desulfurization absorption tower for subsequent use. The scraping rods are driven to rotate along with the rotation of the screw rod, so that the top of the permeable cotton plate is scraped by the bottom of the scraping rods, and the permeable cotton plate is not easily blocked to affect the subsequent filtration. Besides, as the dispersion net and the scraping ring move downwards, the top of the scraping rods further scrapes the bottom of the dispersion net, thereby removing the slurry on the dispersion net and facilitating the backflow and collection of the slurry. The desulfurization absorption tower is safer to use. -4.
[0023] FIG. 1 is a schematic structural diagram of a desulfurization absorption tower of the present application;
[0024] FIG. 2 is a schematic structural diagram of a scraping ring, in an initial state, of the present application;
[0025] FIG. 3 is a schematic structural diagram of the scraping ring, in an adjusting state, of the present application;
[0026] FIG. 4 is a top, sectioned view of the desulfurization absorption tower of the present application; and
[0027] FIG. 5 is a perspective view of a cleaning component of the present application.
[0028] Reference numerals in the drawings are listed as follows: 1 desulfurization absorption tower; 2 base; 3 air inlet pipe; 4 air outlet pipe; 5 control box; 6 sealing door; 7 slurry circulating pump; 8 liquid conveying pipe; 9 spray plate; 10 variable-frequency drive; 11 mist eliminator; 12 motor; 13 screw rod; 14 cleaning component; 1401 dispersion net; 1402 scraping ring; 1403 sliding block; 15 liquid guiding component; 1501 permeable cotton plate; 1502 scraping rod.
[0029] Technical solutions in the embodiments of the present application are clearly and completely described hereinafter in conjunction with the drawings in the embodiments of the present application. The embodiments described below with reference to the drawings are only exemplary embodiments which are only used to explain the present application, and should not be construed as limiting the present application.
[0030] The embodiment of the present application is described below according to the overall structure of the present application.
[0031] As shown in FIG. 1 to FIG. 5, a desulfurization absorption tower with a variable frequency regulated slurry circulating pump, includes a desulfurization absorption tower 1. A base 2 is fixed at the bottom of the desulfurization absorption tower 1. An air inlet pipe 3 -5.
penetrating through one side of the desulfurization absorption tower 1 is provided in the middle of the desulfurization absorption tower. A control box 5 is arranged below the air inlet pipe 3. A variable-frequency drive 10 is arranged in the control box 5. An air outlet pipe 4 penetrating through the other side of the desulfurization absorption tower 1 is provided at an upper part of the desulfurization absorption tower. A slurry circulating pump 7 is arranged below the air outlet pipe 4. The control box 5 is electrically connected with the slurry circulating pump 7 through the variable-frequency drive 10, and the slurry circulating pump 7 is provided with a frequency varying structure, so that the control box 5 can perform variable frequency control for the slurry circulating pump 7 with the variable-frequency drive 10, achieving the object of variable frequency regulation. A liquid inlet end and a liquid outlet end of the slurry circulating pump 7 are both connected with liquid conveying pipes 8. One end of one of the liquid conveying pipes 8 far away from the liquid outlet end of the slurry circulating pump 7 is connected with a spray plate 9. A mist eliminator 11 is mounted above the spray plate 9. The operation of the slurry circulating pump 7 can transport the slurry located at an inner lower part of the desulfurization absorption tower 1 to the spray plate 9 through the liquid conveying pipe 8 for spraying and thereby desulfurizing the flue gas.
Meanwhile, the mist eliminator 11 can dehumidify the flue gas and remove water mist. A sealing door 6 is arranged in the middle of the outer surface of the desulfurization absorption tower 1. A motor 12 is arranged in the middle of the bottom of the desulfurization absorption tower 1. An output end of the motor 12 is connected with a screw rod 13. A cleaning component 14 is arranged above an outer surface of the screw rod 13, and a liquid guiding component 15 is arranged below the outer surface of the screw rod 13. The cleaning component 14 includes a dispersion net 1401 sleeved at an upper part of the outer surface of the screw rod 13, where a scraping ring 1402 is fixed along the circumference of the top of the dispersion net 1401, and multiple sliding blocks 1403 are fixed along the circumference of the scraping ring 1402. The liquid guiding component 15 includes a permeable cotton plate 1501 sleeved at a lower part of the outer surface of the screw rod 13. Scraping rods 1502 fixed at a lower part of the screw rod 13 are arranged on two sides of the screw rod 13 and are arranged above the permeable cotton plate 1501.
[0032] Referring to FIG. 1 to FIG. 5, the cleaning component 14 includes the dispersion net 1401 sleeved at the upper part of the outer surface of the screw rod 13. The scraping ring 1402 is fixed along the circumference of the top of the dispersion net 1401. The circumference of -6-
the scraping ring 1402 abuts against the inner wall of the desulfurization absorption tower 1, and the inner middle of the dispersion net 1401 1s threaded to the screw rod 13, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower 1 can be scraped off by adjusting the height of the scraping ring 1402. Multiple sliding blocks 1403 are fixed along the circumference of the scraping ring 1402. Multiple sliding grooves fitting the sliding blocks 1403 are arranged on the inner wall of the desulfurization absorption tower 1.
The scraping ring 1402 is in sliding fit with the sliding grooves through the sliding blocks 1403, so that the scraping ring 1402 slides along the sliding grooves via the sliding blocks 1403. When the motor 12 operates to drive the screw rod 13 to rotate, the dispersion net 1401 is driven to move along the thread, and because the scraping ring 1402 is in sliding fit with the sliding grooves through the sliding blocks 1403, the dispersion net 1401 and the scraping ring 1402 can be adjusted vertically. The inner wall of the desulfurization absorption tower 1 can be scraped along with the adjustment of the height of the scraping ring 1402, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower 1 are scraped off, and the subsequent desulfurization of the desulfurization absorption tower 1 is not affected.
[0033] Referring to FIG. 1 to FIG. 5, the liquid guiding component 15 includes the permeable cotton plate 1501 sleeved at the lower part of the outer surface of the screw rod 13.
Scraping rods 1502 fixed at the lower part of the screw rod 13 are arranged on two sides of the screw rod 13 and are arranged above the permeable cotton plate 1501. The bottom of the scraping rods 1502 abuts against the top of the permeable cotton plate 1501, and the top of the scraping rods 1502 is matched with the bottom of the dispersion net 1401, so that the scraping rods 1502 can scrape the top of the permeable cotton plate 1501 and the bottom of the dispersion net 1401. After desulfurization of the flue gas by slurry spray, the slurry is filtered by the permeable cotton plate 1501, so that impurities are left on the permeable cotton plate 1501, and the slurry is stored in the inner lower part of the desulfurization absorption tower 1 for subsequent use. The scraping rods 1502 are driven to rotate along with the rotation of the screw rod 13, so that the top of the permeable cotton plate 1501 is scraped by the bottom of the scraping rods 1502, and the permeable cotton plate 1501 is not easily blocked to affect the subsequent filtration. Besides, as the dispersion net 1401 and the scraping ring 1402 move downwards, the top of the scraping rods 1502 further scrapes the bottom of the dispersion net 1401, thereby removing the slurry on the dispersion net 1401 and facilitating the backflow -7-
and collection of the slurry.
[0034] The implementation principle of this embodiment is as follows. Firstly, after the flue gas flows in through the air inlet pipe 3, the operator operates the slurry circulating pump 7 to transport the slurry located at the inner lower part of the desulfurization absorption tower 1 to the spray plate 9 through the liquid conveying pipe 8 for spraying and thereby desulfurizing the flue gas. Meanwhile, the mist eliminator 11 can dehumidify the flue gas and remove water mist. After desulfurization of the flue gas by slurry spray, the slurry is filtered by the permeable cotton plate 1501, so that impurities are left on the permeable cotton plate 1501, and the slurry is stored in the inner lower part of the desulfurization absorption tower 1 for subsequent use. Meanwhile, the operator operates the motor 12 to drive the screw rod 13 to rotate, the dispersion net 1401 is driven to move along the thread, and because the scraping ring 1402 is in sliding fit with the sliding grooves through the sliding blocks 1403, the dispersion net 1401 and the scraping ring 1402 can be adjusted vertically. The inner wall of the desulfurization absorption tower 1 can be scraped along with the adjustment of the height of the scraping ring 1402, so that dust and water stains adhered to the inner wall of the desulfurization absorption tower 1 are scraped off. The scraping rods 1502 are driven to rotate along with the rotation of the screw rod 13, so that the top of the permeable cotton plate 1501 is scraped by the bottom of the scraping rods 1502, and the permeable cotton plate 1501 is not easily blocked to affect the subsequent filtration. Besides, as the dispersion net 1401 and the scraping ring 1402 move downwards, the top of the scraping rods 1502 further scrapes the bottom of the dispersion net 1401, thereby removing the slurry on the dispersion net 1401 and facilitating the backflow and collection of the slurry.
[0035] Although the embodiment of the present application has been shown and described, this specific embodiment is only used for explaining the present application and is not intended to limit the present application. Specific features, structures, materials or characteristics described herein may be combined in any one or more embodiments or examples in a suitable manner. After reading this specification, those skilled in the art can make, as needed, changes, substitutions and modifications to the embodiments with no inventive contributions, without departing from the principle and object of the present application. As long as those modifications, substitutions and variations fall within the scope of the appended claims of the present application, they shall be protected by the patent law. -8-
Claims (8)
1. A desulfurization absorption tower with a variable frequency regulated slurry circulating pump, comprising a desulfurization absorption tower (1), wherein a base (2) is fixed at the bottom of the desulfurization absorption tower (1); an air inlet pipe (3) penetrating through one side of the desulfurization absorption tower (1) is provided in the middle of the desulfurization absorption tower (1); a control box (5) is arranged below the air inlet pipe (3); a variable-frequency drive (10) is arranged in the control box (5); an air outlet pipe (4) penetrating through the other side of the desulfurization absorption tower (1) is provided at an upper part of the desulfurization absorption tower (1); a sealing door (6) is arranged in the middle of the outer surface of the desulfurization absorption tower (1); a motor (12) is arranged in the middle of the bottom of the desulfurization absorption tower (1); an output end of the motor (12) is connected with a screw rod (13); a cleaning component (14) is arranged above an outer surface of the screw rod (13), and a liquid guiding component (15) is arranged below the outer surface of the screw rod (13).
2. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 1, wherein a slurry circulating pump (7) is arranged below the air outlet pipe (4); a liquid inlet end and a liquid outlet end of the slurry circulating pump (7) are both connected with liquid conveying pipes (8); one end of one of the liquid conveying pipes (8) far away from the liquid outlet end of the slurry circulating pump (7) is connected with a spray plate (9); a mist eliminator (11) is mounted above the spray plate (9).
3. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 2, wherein the control box (5) is electrically connected with the slurry circulating pump (7) through the variable-frequency drive (10), and the slurry circulating pump (7) is provided with a frequency varying structure.
4. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 1, wherein the cleaning component (14) comprises a
-9.
dispersion net (1401) sleeved at an upper part of the outer surface of the screw rod (13), wherein a scraping ring (1402) is fixed along the circumference of the top of the dispersion net (1401), and a plurality of sliding blocks (1403) are fixed along the circumference of the scraping ring (1402).
5. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 4, wherein a plurality of sliding grooves fitting the sliding blocks (1403) are arranged on an inner wall of the desulfurization absorption tower (1), and the scraping ring (1402) is in sliding fit with the sliding grooves through the sliding blocks (1403).
6. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 4, wherein the circumference of the scraping ring (1402) abuts against an inner wall of the desulfurization absorption tower (1), and the inner middle of the dispersion net (1401) is threaded to the screw rod (13).
7. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 4, wherein the liquid guiding component (15) comprises a permeable cotton plate (1501) sleeved at a lower part of the outer surface of the screw rod (13); scraping rods (1502) fixed at a lower part of the screw rod (13) are arranged on two sides of the screw rod (13) and are arranged above the permeable cotton plate (1501).
8. The desulfurization absorption tower with a variable frequency regulated slurry circulating pump according to claim 7, wherein the bottom of the scraping rods (1502) abuts against the top of the permeable cotton plate (1501), and the top of the scraping rods (1502) is matched with the bottom of the dispersion net (1401). -10 -
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| CN202210436222.2A CN114849446A (en) | 2022-04-25 | 2022-04-25 | Desulfurization absorption tower is adjusted in thick liquid circulating pump frequency conversion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11151426A (en) * | 1997-11-19 | 1999-06-08 | Ishikawajima Harima Heavy Ind Co Ltd | Flue gas desulfurizer integrated to chimney |
| CN209735315U (en) * | 2019-03-18 | 2019-12-06 | 杭州杭钢三江矿业有限公司 | Prevent lime stone desulphurization unit of jam |
| CN212283518U (en) * | 2020-04-26 | 2021-01-05 | 辽宁佳诚环保设备有限公司 | Novel desulfurizing tower |
| CN213761257U (en) * | 2020-11-10 | 2021-07-23 | 西安热工研究院有限公司 | Desulfurization absorption tower is adjusted in thick liquid circulating pump frequency conversion |
| CN214131056U (en) * | 2020-12-17 | 2021-09-07 | 江苏实亚新材料科技有限公司 | Limestone desulfurization absorption tower with anti-scaling function |
| CN214437905U (en) * | 2021-03-11 | 2021-10-22 | 山西漳山发电有限责任公司 | Supplementary desulphurization unit of thermal power plant's flue gas of environment-friendly |
| CN215962873U (en) * | 2021-08-27 | 2022-03-08 | 连云港市工投集团利海化工有限公司 | Alkali wash tower is used in benzyl chloride production convenient to retrieve waste liquid |
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