CN117000021B - Lime gypsum desulfurization device and desulfurization method thereof - Google Patents
Lime gypsum desulfurization device and desulfurization method thereof Download PDFInfo
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- CN117000021B CN117000021B CN202311220191.8A CN202311220191A CN117000021B CN 117000021 B CN117000021 B CN 117000021B CN 202311220191 A CN202311220191 A CN 202311220191A CN 117000021 B CN117000021 B CN 117000021B
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- desulfurization
- flue gas
- main body
- absorption tower
- fixedly connected
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 107
- 230000023556 desulfurization Effects 0.000 title claims abstract description 107
- 239000010440 gypsum Substances 0.000 title claims abstract description 25
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 235000008733 Citrus aurantifolia Nutrition 0.000 title description 6
- 235000011941 Tilia x europaea Nutrition 0.000 title description 6
- 239000004571 lime Substances 0.000 title description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000003546 flue gas Substances 0.000 claims abstract description 110
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 93
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 64
- 238000010521 absorption reaction Methods 0.000 claims abstract description 54
- 238000002309 gasification Methods 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims abstract description 12
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims description 64
- 239000007789 gas Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 16
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 claims description 12
- 235000010261 calcium sulphite Nutrition 0.000 claims description 12
- 239000011593 sulfur Substances 0.000 claims description 12
- 229910052717 sulfur Inorganic materials 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 230000001590 oxidative effect Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 238000004537 pulping Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims 2
- 238000005507 spraying Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 11
- 239000005864 Sulphur Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 8
- 238000000429 assembly Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- 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
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- 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
Abstract
The invention provides a limestone-gypsum desulfurization device and a desulfurization method thereof, belonging to the technical field of limestone-gypsum desulfurization, wherein the limestone-gypsum desulfurization device comprises an absorption tower main body; the flue gas pipe is fixedly connected to the circumferential surface of the absorption tower main body; the exhaust pipe is fixedly connected to the upper end of the absorption tower main body; the desulfurization gasification mechanism, desulfurization gasification mechanism includes gasification equipment, the desulfurizing tube, the desulfurizing plate, transverse channel and multiunit whirl subassembly, the desulfurizing tube is equipped with two, gasification equipment locates one side of absorption tower main part, through using this scheme, adopt desulfurization gasification mechanism preparation gasification desulfurizing agent, the whirl subassembly through in the desulfurizing plate produces stranded vortex form gasification desulfurizing agent, in the sulfur oxide emergence reaction process with in the flue gas, reaction rate accelerates greatly, easily realize catching the sulphur process, only need one deck to spray the subassembly by the flue gas after the desulfurizing agent in this scheme simultaneously, compare in traditional four-layer spraying, the power consumption is showing and is reducing, the energy saving.
Description
Technical Field
The invention belongs to the technical field of lime gypsum desulfurization, and particularly relates to a lime gypsum desulfurization device and a desulfurization method thereof.
Background
The processing procedure of lime gypsum generally adopts a gypsum method flue gas desulfurization technology, the desulfurization products are available, the flue gas from the outlet of a boiler induced draft fan enters an absorption tower after being boosted by a booster fan, sulfur dioxide in the flue gas is fully absorbed by sprayed calcium carbonate slurry, and enters a slurry tank, and other pollutants in the flue gas are removed at the same time; in the process, hot flue gas is in countercurrent contact with slurry from top to bottom upwards to generate chemical absorption reaction, the cooled limestone slurry is conveyed to an absorption tower by a limestone slurry pump, the limestone slurry is mixed with the slurry in the absorption tower, and the mixed slurry is conveyed upwards by a circulating pump and sprayed out by a multi-nozzle layer.
In the prior art, flue gas is introduced into an absorption tower to realize the purpose of desulfurization by spraying slurry in multiple layers, the circulating pump required by the multilayer spraying technology is high in power consumption, the contact surface between the flue gas and the slurry in the spraying process is small, the reaction rate is low, sulfur oxide is flue gas, absorption liquid is liquid, gas-liquid combination overcomes the tension on the surface of the liquid to realize combined reaction, and the required gas-liquid ratio is overlarge.
Disclosure of Invention
The invention aims to provide a limestone-gypsum desulfurization device and a desulfurization method thereof, which aim to solve the problems that in the prior art, flue gas is introduced into an absorption tower to realize desulfurization through multi-layer spraying slurry, the power of a circulating pump required by the multi-layer spraying technology is large, the power consumption is high, the contact surface between the flue gas and the slurry in the spraying process is small, the reaction rate is low, sulfur oxide is flue gas, absorption liquid is liquid, gas-liquid combination can only be combined for reaction by overcoming the tension on the surface of the liquid, and the required gas-liquid ratio is overlarge.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a limestone-gypsum desulfurization device comprising:
an absorption tower main body;
the flue gas pipe is fixedly connected to the circumferential surface of the absorption tower main body;
the exhaust pipe is fixedly connected to the upper end of the absorption tower main body;
the desulfurization and gasification mechanism comprises a gasification device, desulfurization pipes, desulfurization plates, transverse channels and a plurality of groups of cyclone assemblies, wherein two desulfurization pipes are arranged, the gasification device is arranged on one side of the absorption tower main body, the desulfurization plates are arranged in the absorption tower main body, one ends of the two desulfurization pipes are fixedly connected with the output end of the gasification device, the other ends of the two desulfurization pipes are connected with the desulfurization plates, the transverse channels are arranged in the desulfurization plates, the transverse channels are communicated with the two desulfurization pipes, and the plurality of groups of cyclone assemblies are arranged in the desulfurization plates;
the gas-passing assembly comprises an outer ring channel, a circulating pipe, an inner ring channel, guide blocks and guide pipes, wherein two guide blocks are arranged, a plurality of guide pipes and a plurality of circulating pipes are respectively arranged, the outer ring channel and the inner ring channel are all arranged in a desulfurization plate, the plurality of circulating pipes are fixedly connected in the desulfurization plate, the plurality of circulating pipes are communicated with the outer ring channel and the inner ring channel, the two guide blocks are fixedly connected to the circumferential surface of the desulfurization plate, the plurality of guide pipes are respectively arranged in the two guide blocks, and the plurality of guide pipes are respectively communicated with the two guide pipes;
each group of rotational flow assembly comprises a rotational flow cylinder, a rotational flow main body, a rotational tooth ring, a rotational flow fan, a corrugated pipe, a mounting groove, a sealant ring, two groups of driving components and a plurality of groups of adjusting components, wherein the rotational flow cylinder is fixedly connected in a desulfurization plate, the rotational flow main body is arranged in the rotational flow cylinder, the corrugated pipe is connected with the rotational flow main body and an inner ring channel, the rotational tooth ring is rotationally connected in the rotational flow main body, the rotational flow fan is fixedly connected in the rotational tooth ring, the sealant ring is connected with the rotational flow cylinder and the rotational flow main body, and the mounting groove is formed in the rotational flow main body;
each group of driving component comprises a first gear, a first motor and a second gear, wherein the first gear is rotationally connected in the mounting groove through a rotating shaft, the first gear is meshed with the rotating toothed ring, the first motor is fixedly connected to the inner wall of the mounting groove, the second gear is fixedly connected to the output end of the first motor, and the second gear is meshed with the first gear;
each group of adjusting parts comprises a hydraulic cylinder, a ball rod and an electric control valve, wherein the hydraulic cylinder is fixedly connected to the inner wall of the cyclone cylinder, the ball rod is slidably connected in the hydraulic cylinder, the ball rod is in rolling connection in the cyclone main body, and the electric control valve is arranged in the hydraulic cylinder.
As a preferable mode of the invention, a slurry pool is provided at the lower part of the circumferential inner wall of the absorption tower main body.
As a preferable scheme of the invention, a second motor is fixedly connected in the absorption tower main body, the output end of the second motor movably penetrates through the bottom inner wall of the slurry pond and extends upwards, and the output end of the second motor is fixedly connected with a stirring blade.
As a preferable scheme of the invention, an air pipe is fixedly connected in the absorption tower main body, and the air pipe is communicated with the inside of the slurry pool.
As a preferable scheme of the invention, the circumferential inner wall of the absorption tower main body is fixedly connected with a spraying assembly.
In a preferred embodiment of the present invention, a demister is fixedly connected to an upper portion of the circumferential inner wall of the absorption tower main body.
The desulfurization method of the lime gypsum desulfurization device comprises the following steps:
s1, boosting the pressure of the flue gas by a booster fan, and then introducing the boosted flue gas into a flue gas pipe, wherein the flue gas enters the absorption tower main body;
s2, gasifying the desulfurizing agent by a desulfurizing pipe in the desulfurizing and gasifying mechanism, inputting the gasifying desulfurizing agent into a cyclone assembly after passing through a gas passing assembly in a desulfurizing plate under the action of pressure, and generating vortex-shaped gasifying desulfurizing agent when the gasifying desulfurizing agent is output by the cyclone assembly, wherein the vortex-shaped gasifying desulfurizing agent collides with flue gas and meets;
s3, reacting the rotating gasified desulfurizer gas flow with sulfur oxide in the flue gas to generate a desulfurization product;
s4, the pulping component sprays slurry to react with flue gas to generate calcium sulfite which falls into a slurry pool;
s5, the purified flue gas rises, and the desulfurized flue gas is defogger to remove liquid drops in the flue gas;
s6, a gas component detection sensor is arranged at the output part of the demister to detect the components of the discharged smoke;
s7, discharging the flue gas without the sulfur component into the atmosphere.
In a preferred embodiment of the present invention, in the step S6, the gas component detecting sensor detects that the discharged flue gas contains a sulfidizing component, and the channel for discharging the flue gas is closed, the channel between the demister and the flue gas pipe is opened, and the flue gas containing the sulfidizing component is continuously introduced into the main body of the absorption tower for desulfurization reaction.
In a preferred embodiment of the present invention, in the step S2, a desulfurizing agent is added into the gasification apparatus to rapidly gasify the desulfurizing agent.
In a preferred embodiment of the present invention, the slurry in step S4 absorbs the desulfurization product, and oxidizing air is introduced into the slurry through an air pipe to form a calcium carbonate solution.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, the gasification desulfurizing agent is prepared by adopting the desulfurizing and gasifying mechanism, a plurality of vortex-shaped gasification desulfurizing agents are generated by the cyclone assemblies in the desulfurizing plate, the reaction speed is greatly increased in the reaction process with the sulfur oxide in the flue gas, the sulfur capturing process is easily realized, and meanwhile, the flue gas desulfurized by the desulfurizing agent in the scheme only needs one layer of spraying assembly, compared with the traditional four layers of spraying, the power consumption is obviously reduced, and the energy is saved.
2. In the invention, the gasified desulfurizing agent in rotation reacts with the sulfur oxide in the flue gas, and compared with the traditional desulfurizing agent, the gasified desulfurizing agent increases the contact area between the desulfurizing agent and the flue gas, so that the reaction is more sufficient.
3. In the invention, the motor drives the stirring blade connected with the output end of the motor to rotate when the motor runs, the stirring blade stirs the slurry in the slurry pond, and when oxidizing air is introduced into the slurry pond through the air pipe, the slurry is contacted with the oxidizing air, so that the slurry reaction is facilitated.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a cross-sectional view of the main body of the absorption column according to the present invention;
fig. 3 is a perspective view of the main body of the absorption tower according to the present invention;
FIG. 4 is a first perspective view of the desulfurization plate of the present invention;
FIG. 5 is a second perspective view of the desulfurization plate of the present invention;
FIG. 6 is a first cross-sectional view of the desulfurization plate of the present invention;
FIG. 7 is a schematic view of the flow direction of the gasifying desulfurizing agent in the desulfurizing plate according to the present invention;
FIG. 8 is a second cross-sectional view of the desulfurization plate of the present invention;
FIG. 9 is an enlarged view of a portion of the invention at A in FIG. 8;
FIG. 10 is a schematic view of the gasification apparatus according to the present invention.
In the figure: 1. an absorption tower main body; 2. a flue pipe; 3. a discharge pipe; 4. a gasification device; 5. a desulfurization tube; 6. a desulfurization plate; 601. an outer ring channel; 602. a circulation pipe; 603. an inner ring channel; 7. an import block; 701. a guide tube; 8. a swirl pot; 801. a cyclone main body; 802. rotating the toothed ring; 803. a first gear; 804. a first motor; 805. a second gear; 806. a swirl fan; 807. a bellows; 808. a mounting groove; 9. a hydraulic cylinder; 901. a cue; 902. an electric control valve; 903. a sealant ring; 10. a spray assembly; 11. a demister; 12. a motor; 13. stirring the leaves; 14. an air tube; 15. an atomizing nozzle; 16. a high pressure pump.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 10, the present invention provides the following technical solutions:
a limestone-gypsum desulfurization device comprising:
an absorption tower main body 1;
the flue gas pipe 2 is fixedly connected to the circumferential surface of the absorption tower main body 1;
a discharge pipe 3, the discharge pipe 3 being fixedly connected to the upper end of the absorption tower body 1;
the desulfurization and gasification mechanism comprises a gasification device 4, desulfurization pipes 5, desulfurization plates 6, transverse channels 7 and a plurality of groups of cyclone assemblies, wherein two desulfurization pipes 5 are arranged, the gasification device 4 is arranged on one side of the absorption tower main body 1, the desulfurization plates 6 are arranged in the absorption tower main body 1, one ends of the two desulfurization pipes 5 are fixedly connected with the output ends of the gasification device 4, the other ends of the two desulfurization pipes 5 are connected with the desulfurization plates 6, the transverse channels 7 are arranged in the desulfurization plates 6, the transverse channels 7 are communicated with the two desulfurization pipes 5, and the plurality of groups of cyclone assemblies are arranged in the desulfurization plates 6;
the air-through assembly comprises an outer ring channel 601, a circulation pipe 602, an inner ring channel 603, guide blocks 7 and guide pipes 701, wherein two guide pipes 7 are arranged, the guide pipes 701 and the circulation pipe 602 are respectively provided with a plurality of guide pipes, the outer ring channel 601 and the inner ring channel 603 are respectively arranged in a desulfurization plate 6, the circulation pipes 602 are respectively fixedly connected in the desulfurization plate 6, the circulation pipes 602 are respectively communicated with the outer ring channel 601 and the inner ring channel 603, the two guide blocks 7 are respectively fixedly connected to the circumferential surface of the desulfurization plate 6, the guide pipes 701 are respectively arranged in the two guide blocks 7, and the guide pipes 701 are respectively communicated with two 5;
each group of rotational flow components comprises a rotational flow cylinder 8, a rotational flow main body 801, a rotational tooth ring 802, a rotational flow fan 806, a corrugated pipe 807, a mounting groove 808, a sealant ring 903, two groups of driving components and a plurality of groups of adjusting components, wherein the rotational flow cylinder 8 is fixedly connected in a desulfurization plate 6, the rotational flow main body 801 is arranged in the rotational flow cylinder 8, the corrugated pipe 807 is connected with the rotational flow main body 801 and an inner ring channel 603, the rotational tooth ring 802 is rotationally connected in the rotational flow main body 801, the rotational flow fan 806 is fixedly connected in the rotational tooth ring 802, the sealant ring 903 is connected with the rotational flow cylinder 8 and the rotational flow main body 801, and the mounting groove 808 is arranged in the rotational flow main body 801;
each group of driving components comprises a first gear 803, a first motor 804 and a second gear 805, wherein the first gear 803 is rotationally connected in a mounting groove 808 through a rotating shaft, the first gear 803 is meshed with the rotating toothed ring 802, the first motor 804 is fixedly connected to the inner wall of the mounting groove 808, the second gear 805 is fixedly connected to the output end of the first motor 804, and the second gear 805 is meshed with the first gear 803;
each group of adjusting parts comprises a hydraulic cylinder 9, a ball rod 901 and an electric control valve 902, wherein the hydraulic cylinder 9 is fixedly connected to the inner wall of the cyclone cylinder 8, the ball rod 901 is slidably connected to the hydraulic cylinder 9, the ball rod 901 is in rolling connection to the cyclone main body 801, and the electric control valve 902 is arranged in the hydraulic cylinder 9.
In the specific embodiment of the invention, flue gas is introduced into the absorber main body 1 through the flue gas pipe 2, and is operated through the desulfurization and gasification mechanism to generate a gasified desulfurizing agent, the gasified desulfurizing agent is conveyed into the desulfurization plate 6 through the desulfurization pipe 5, an inner ring channel 603 in the gas-through assembly is positioned at the inner side of an outer ring channel 601, the outer ring channel 601 and the inner ring channel 603 are communicated through a circulation pipe 602, each circulation pipe 602 is arranged at an inclination angle of 60 degrees, when the gasified desulfurizing agent is input into the inner ring channel 603 through the outer ring channel 601, the gasified desulfurizing agent flows into the inner ring channel 603 in an annular shape through the outlet of the circulation pipe 602, so that the gasified desulfurizing agent in the inner ring channel 603 is uniform, and the output quantity of the gasified desulfurizing agent in each subsequent rotational flow assembly is controlled to be the same; the cyclone assemblies are provided with eight groups, the eight groups of cyclone assemblies are annularly and equidistantly arranged in the desulfurization plate 6, a cyclone main body 801 in each group of cyclone assemblies is fixedly connected in the desulfurization plate 6, the cyclone main body 801 is communicated with an inner ring channel 603 through a corrugated pipe 807, the position of the cyclone main body 801 is controlled by four groups of adjusting parts, a rotating toothed ring 802 is rotationally connected to the circumferential inner wall of the cyclone main body 801, a cyclone fan 806 is fixedly connected in the rotating toothed ring 802, the rotating toothed ring 802 is connected with two groups of driving parts, the two groups of driving parts control the rotation of one rotating toothed ring 802, a first motor 804 in the driving parts rotates and drives a first gear 803 to rotate when in operation, and the first gear 803 drives the rotating toothed ring 802 to rotate, and the rotating toothed ring 802 drives the rotating toothed ring 806 to rotate; the upper part of the club 901 in each group of driving components is connected in the cyclone main body 801, the lower part of the club 901 is connected in the hydraulic cylinder 9 in a sliding way, the air pressure change in the hydraulic cylinder 9 controls the club 901 to slide in the hydraulic cylinder 9, the electric control valve 902 is used for controlling the state of air pressure input into the hydraulic cylinder 9, and in the process, the angle adjustment of the cyclone main body 801 is controlled by the lifting of the club 901 and is used for adjusting the output angle of the output rotary gasification desulfurizing agent; the two guide blocks 7 are symmetrically arranged on the circumferential surface of the desulfurization plate 6, the two guide blocks 7 are respectively in butt joint with the two guide blocks 7, the gasification desulfurizing agent output by the two guide blocks 5 is input into the outer ring channel 601 through the guide pipe 701, the gasification desulfurizing agent in the outer ring channel 601 is input into the inner ring channel 603 through the circulation pipe 602, the gasification desulfurizing agent rotates clockwise in the inner ring channel 603, and the air pressure of each part in the inner ring channel 603 and the input quantity of the gasification desulfurizing agent are ensured to be uniform; the gasified desulfurizing agent is input into the cyclone main body 801 through the corrugated pipe 807, the gasified desulfurizing agent is in vortex-shaped airflow when being output through the cyclone fan 806, the vortex-shaped airflow collides with the flue gas when in contact, the rapid reaction is carried out, the reaction is complete, sulfur oxide in the flue gas is captured, the sulfur capturing process is easily realized, the surface of the desulfurizing plate 6 is provided with an opening, the operation of the spraying assembly 10 is not influenced, slurry sprayed by the operation of the spraying assembly 10 is reacted with the rest flue gas to form calcium sulfite to fall into a slurry pond, and compared with the traditional process using four layers of spraying, the scheme only needs one layer of spraying, and the speed of the desulfurizing process is effectively improved by using the gasified desulfurizing agent, so that the efficiency of slurry reaction is improved; the desulfurizing agent is gasified and sprayed out after being crushed and pressurized in the gasification device 4, the desulfurizing agent is gasified by using the gasification device 4, the gasification device 4 mainly comprises a high-pressure pump and an atomizing nozzle, the process is that the high-pressure pump is used for pressurizing at first, the desulfurizing agent is atomized by the atomizing nozzle to form a gaseous state, and then the gaseous state reacts with flue gas to form a gas-gas reaction; the atomizing nozzle is communicated with the desulfurization plate 6, the gasified desulfurizer is input into the desulfurization plate 6, the main component of the gasified desulfurizer is alkaline solution prepared by calcareous medicaments, the reaction product of the gasified desulfurizer and flue gas is mainly calcium sulfite, the calcium sulfite falls into a slurry pond, the calcium sulfite generated by spraying flue gas by a spraying assembly falls into the slurry pond, the slurry pond is mainly used for storing the calcium sulfite generated by the reaction of the gasified desulfurizer and flue gas sprayed by the spraying assembly with the flue gas respectively, the calcium sulfite in the slurry pond is introduced with air, the calcium sulfite is oxidized into calcium carbonate, the desulfurization treatment is carried out on the vulcanized components in the flue gas by the desulfurizer, and the subsequent spraying can be completed by only using one layer of spraying assembly, thereby effectively reducing the energy consumption.
Referring to fig. 1 to 10, a slurry pool is provided at the lower part of the circumferential inner wall of the absorption tower body 1.
In this embodiment: the slurry tank is used for collecting slurry.
Referring to fig. 1-4, a second motor 12 is fixedly connected in the absorption tower main body 1, an output end of the second motor 12 movably penetrates through a bottom inner wall of the slurry pond and extends upwards, and an output end of the second motor 12 is fixedly connected with a stirring blade 13.
In this embodiment: the second motor 12 drives the stirring blade 13 connected with the output end of the second motor to rotate during operation, the stirring blade 13 stirs the slurry in the slurry pond, and when oxidation air is introduced into the slurry pond through the air pipe 14, the slurry is contacted with the oxidation air, so that the slurry reaction is facilitated.
Referring to fig. 1 to 10, an air pipe 14 is fixedly connected to the absorption tower body 1, and the air pipe 14 is communicated with the slurry tank.
In this embodiment: the air pipe 14 is used to introduce oxidizing air into the slurry tank, and one end of the air pipe 14 is connected to a device for generating oxidizing air, through which oxidizing air is supplied.
Referring to fig. 1 to 10, a spray assembly 10 is fixedly connected to the inner wall of the absorber body 1.
In this embodiment: the spray assembly 10 is connected with a device for supplying slurry, the slurry is pumped into the device, the slurry is sprayed into the absorption tower body 1 through the spray assembly 10, the spray assembly 10 comprises a plurality of pipelines and spray heads, the lower surface of each spray assembly 10 is fixedly connected with a plurality of spray heads, and the slurry is conveyed by the pipelines and sprayed out through the spray heads.
Referring to fig. 1 to 10, a demister 11 is fixedly connected to an upper portion of a circumferential inner wall of the absorber main body 1.
In this embodiment: the demister 11 plays a role in removing liquid drops in flue gas, and a gas component detection sensor is arranged at an output part of the demister 11 and used for detecting components of the flue gas discharged, and the gas component detection sensor is in the prior art and is not described in detail herein.
Referring to fig. 1-10, a desulfurization method of a limestone-gypsum desulfurization device includes the following steps:
s1, boosting the pressure of the flue gas by a booster fan, and then introducing the boosted flue gas into a flue gas pipe 2, wherein the flue gas enters an absorption tower main body 1;
s2, gasifying the desulfurizing agent by a desulfurizing pipe 5 in the desulfurizing and gasifying mechanism, inputting the gasifying desulfurizing agent into a cyclone assembly after passing through a gas passing assembly in a desulfurizing plate 6 under the action of pressure, and generating vortex-shaped gasifying desulfurizing agent when the gasifying desulfurizing agent is output by the cyclone assembly, wherein the vortex-shaped gasifying desulfurizing agent collides with flue gas and meets;
s3, reacting the rotating gasified desulfurizer gas flow with sulfur oxide in the flue gas to generate a desulfurization product;
s4, the pulping component sprays slurry to react with flue gas to generate calcium sulfite which falls into a slurry pool;
s5, the purified flue gas rises, and the desulfurized flue gas is defogger 11 removes liquid drops in the flue gas;
s6, a gas component detection sensor is arranged at the output part of the demister 11 to detect the components of the discharged smoke;
s7, discharging the flue gas without the sulfur component into the atmosphere.
In this embodiment: the flue gas is boosted by the booster fan and then is led into the flue gas pipe 2, the flue gas enters the absorption tower main body 1 from the flue gas pipe 2, the desulfurizing agent is gasified by the desulfurizing pipe 5 in the desulfurizing gasification mechanism, the gasified desulfurizing agent is input into the cyclone assembly after passing through the gas passing assembly in the desulfurizing plate 6 under the action of pressure, the vortex-shaped gasified desulfurizing agent is generated when the gasified desulfurizing agent is output by the cyclone assembly, the vortex-shaped gasified desulfurizing agent collides with the flue gas and is intersected, the gasified desulfurizing agent contacts with the flue gas and reacts to generate a desulfurizing product, the pulping assembly sprays slurry and reacts with the flue gas to generate calcium sulfite and falls into a slurry pond, the slurry falls into the slurry pond, the purified flue gas continuously rises, liquid drops in the flue gas are removed by the demister 11 when passing through the demister 11, a gas component detection sensor is arranged at the output part of the demister 11, and the gas is discharged after the components without sulfur are detected.
Referring to fig. 1 to 10 specifically, in step S6, the gas component detecting sensor detects that the discharged flue gas contains a sulfidizing component, so that the channel for discharging the flue gas is closed, the channel between the demister 11 and the flue gas pipe 2 is opened, and the flue gas containing the sulfidizing component is continuously introduced into the absorber main body 1 for desulfurization reaction.
In this embodiment: the gas component detection sensor detects that the discharged flue gas contains a vulcanization component, the channel for discharging the flue gas is closed, the demister 11 is communicated with the flue gas pipe 2 through a pipeline, the channel between the demister 11 and the flue gas pipe 2 is opened, the flue gas containing the vulcanization component is continuously introduced into the absorption tower main body 1 for desulfurization reaction, and the flue gas containing the sulfur component is circularly reciprocated to avoid the atmosphere pollution caused by the flue gas containing the sulfur component.
Referring to fig. 1 to 10, in step S2, a desulfurizing agent is added into the gasification device 4 to quickly gasify the desulfurizing agent.
In this embodiment: in order to quickly gasify the desulfurizing agent, a desulfurizing auxiliary agent is added, the desulfurizing agent is quickly gasified into gas, and the gas reacts with sulfur oxide quickly.
Referring specifically to fig. 1-10, in step S4, the slurry absorbs the desulfurization product, and oxidizing air is introduced into the slurry through an air pipe 14 to form a calcium carbonate solution.
In this embodiment: oxidizing air is introduced into the slurry through the air pipe 14 to react the slurry with the oxidizing air.
The working principle and the using flow of the invention are as follows: when the scheme is used, firstly, the flue gas is boosted by the booster fan and then is led into the flue gas pipe 2, and the flue gas enters the absorption tower main body 1; the desulfurizing agent is gasified by a desulfurizing pipe 5 in the desulfurizing and gasifying mechanism, the gasified desulfurizing agent is input into a desulfurizing plate 6, the gasified desulfurizing agent is input into a cyclone assembly after passing through a gas passing assembly in the desulfurizing plate 6 under the action of pressure, and when the gasified desulfurizing agent is output through the cyclone assembly, a vortex-shaped gasified desulfurizing agent is generated and is collided and intersected with the flue gas; the rotating gasified desulfurizer gas flow reacts with sulfur oxide in the flue gas to produce desulfurization products; the pulping component sprays slurry and reacts with flue gas to generate calcium sulfite which falls into a slurry pool; the purified flue gas rises, and the desulfurized flue gas is defogger 11 for removing liquid drops in the flue gas; the output part of the demister 11 is provided with a gas component detection sensor for detecting the components of the discharged smoke; the flue gas without the sulfur component is discharged into the atmosphere; the flue gas containing the sulfur component is continuously introduced into the absorption tower main body 1 for desulfurization reaction, and the flue gas containing the sulfur component is circularly reciprocated to avoid polluting the atmosphere; the desulfurizing agent is prepared by the desulfurizing and gasifying mechanism, a plurality of vortex-shaped gasifying desulfurizing agents are generated by the cyclone component in the desulfurizing plate 6, the reaction speed is greatly accelerated in the reaction process with the sulfur oxide in the flue gas, the sulfur capturing process is easily realized, meanwhile, the flue gas desulfurized by the desulfurizing agent in the scheme only needs one layer of spraying component, compared with the traditional four layers of spraying, the power consumption is obviously reduced, and the energy is saved.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A limestone-gypsum desulfurization device, comprising:
an absorption tower main body (1);
the flue gas pipe (2), the flue gas pipe (2) is fixedly connected to the circumferential surface of the absorption tower main body (1);
a discharge pipe (3), wherein the discharge pipe (3) is fixedly connected to the upper end of the absorption tower main body (1);
the desulfurization and gasification mechanism comprises a gasification device (4), desulfurization pipes (5), desulfurization plates (6), air-through components and a plurality of groups of cyclone components, wherein the two desulfurization pipes (5) are arranged, the gasification device (4) is arranged on one side of the absorption tower main body (1), the desulfurization plates (6) are arranged in the absorption tower main body (1), one ends of the two desulfurization pipes (5) are fixedly connected with the output ends of the gasification device (4), and the air-through components and the plurality of groups of cyclone components are arranged in the desulfurization plates (6);
the gas-passing assembly comprises an outer ring channel (601), a circulation pipe (602), an inner ring channel (603), guide blocks (7) and guide pipes (701), wherein the two guide blocks (7) are arranged, the guide pipes (701) and the circulation pipe (602) are respectively arranged in a plurality, the outer ring channel (601) and the inner ring channel (603) are respectively arranged in a desulfurization plate (6), the plurality of circulation pipes (602) are respectively fixedly connected in the desulfurization plate (6), the plurality of circulation pipes (602) are respectively communicated with the outer ring channel (601) and the inner ring channel (603), the two guide blocks (7) are respectively fixedly connected to the circumferential surface of the desulfurization plate (6), and the plurality of guide pipes (701) are respectively arranged in the two guide blocks (7) and are respectively communicated with the two guide pipes (5);
each group of rotational flow assembly comprises a rotational flow cylinder (8), a rotational flow main body (801), a rotating toothed ring (802), rotational flow fans (806), a corrugated pipe (807), a mounting groove (808), a sealant ring (903), two groups of driving components and a plurality of groups of adjusting components, wherein the rotational flow cylinder (8) is fixedly connected in a desulfurization plate (6), the rotational flow main body (801) is arranged in the rotational flow cylinder (8), the corrugated pipe (807) is connected with the rotational flow main body (801) and an inner ring channel (603), the rotating toothed ring (802) is rotationally connected in the rotational flow main body (801), the rotational flow fans (806) are fixedly connected in the rotating toothed ring (802), the sealant ring (903) is connected with the rotational flow cylinder (8) and the rotational flow main body (801), and the mounting groove (808) is formed in the rotational flow main body (801);
each group of driving components comprises a first gear (803), a first motor (804) and a second gear (805), the first gear (803) is rotationally connected in a mounting groove (808) through a rotating shaft, the first gear (803) is meshed with a rotating toothed ring (802), the first motor (804) is fixedly connected to the inner wall of the mounting groove (808), the second gear (805) is fixedly connected to the output end of the first motor (804), and the second gear (805) is meshed with the first gear (803);
each group of adjusting parts comprises a hydraulic cylinder (9), a ball rod (901) and an electric control valve (902), wherein the hydraulic cylinder (9) is fixedly connected to the inner wall of the cyclone cylinder (8), the ball rod (901) is slidably connected to the hydraulic cylinder (9), the ball rod (901) is in rolling connection to the cyclone main body (801), and the electric control valve (902) is arranged in the hydraulic cylinder (9).
2. A limestone-gypsum desulphurisation apparatus according to claim 1, wherein: the lower part of the circumferential inner wall of the absorption tower main body (1) is provided with a slurry pool.
3. A limestone-gypsum desulphurisation apparatus according to claim 2, wherein: the absorption tower is characterized in that a second motor (12) is fixedly connected in the absorption tower body (1), the output end of the second motor (12) movably penetrates through the bottom inner wall of the slurry pond and extends upwards, and the output end of the second motor (12) is fixedly connected with a stirring blade (13).
4. A limestone-gypsum desulphurisation apparatus according to claim 3, wherein: an air pipe (14) is fixedly connected in the absorption tower main body (1), and the air pipe (14) is communicated with the inside of the slurry pool.
5. The limestone-gypsum desulfurization device of claim 4, wherein: the circumference inner wall of absorption tower main part (1) fixedly connected with sprays subassembly (10).
6. The limestone-gypsum desulfurization device of claim 5, wherein: the upper part of the circumferential inner wall of the absorption tower main body (1) is fixedly connected with a demister (11).
7. A desulfurization method of a limestone-gypsum desulfurization apparatus using the limestone-gypsum desulfurization apparatus according to any one of claims 1 to 6, characterized by comprising the steps of:
s1, boosting the pressure of the flue gas by a booster fan, and then introducing the boosted flue gas into a flue gas pipe (2), wherein the flue gas enters an absorption tower main body (1);
s2, gasifying the desulfurizing agent by a desulfurizing pipe (5) in the desulfurizing and gasifying mechanism, inputting the gasified desulfurizing agent into a cyclone assembly after passing through an air-through assembly in a desulfurizing plate (6) under the action of pressure, and generating vortex-shaped gasified desulfurizing agent when the gasified desulfurizing agent is output by the cyclone assembly, wherein the vortex-shaped gasified desulfurizing agent collides and meets the flue gas;
s3, reacting the rotating gasified desulfurizer gas flow with sulfur oxide in the flue gas to generate a desulfurization product;
s4, the pulping component sprays slurry to react with flue gas to generate calcium sulfite which falls into a slurry pool;
s5, the purified flue gas rises, and the desulfurized flue gas is defogger (11) removes liquid drops in the flue gas;
s6, a gas component detection sensor is arranged at the output part of the demister (11) to detect the components of the discharged smoke;
s7, discharging the flue gas without the sulfur component into the atmosphere.
8. The desulfurization method of a limestone-gypsum desulfurization device according to claim 7, characterized by: the gas component detection sensor in the step S6 detects that the discharged flue gas contains the sulfuration component, the channel for discharging the flue gas is closed, the channel between the demister (11) and the flue gas pipe (2) is opened, and the flue gas containing the sulfuration component is continuously introduced into the absorption tower main body (1) for desulfurization reaction.
9. The desulfurization method of a limestone-gypsum desulfurization device according to claim 8, characterized by: in the step S2, a desulfurization auxiliary agent is added into the gasification device (4) to quickly gasify the desulfurizing agent.
10. The desulfurization method of a limestone-gypsum desulfurization device according to claim 9, characterized by: the slurry in the step S4 absorbs the desulfurization product, and oxidizing air is introduced into the slurry through an air pipe (14) to form calcium carbonate solution.
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| CN202311220191.8A CN117000021B (en) | 2023-09-21 | 2023-09-21 | Lime gypsum desulfurization device and desulfurization method thereof |
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