CN114870593A - Environment-friendly oxidation treatment device for wet flue gas desulfurization and denitrification - Google Patents

Environment-friendly oxidation treatment device for wet flue gas desulfurization and denitrification Download PDF

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CN114870593A
CN114870593A CN202210364046.6A CN202210364046A CN114870593A CN 114870593 A CN114870593 A CN 114870593A CN 202210364046 A CN202210364046 A CN 202210364046A CN 114870593 A CN114870593 A CN 114870593A
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flue gas
oxidation treatment
treatment tank
tank body
conical
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CN114870593B (en
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李辉
蒋余辉
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Yixing Suha Electric Power Equipment Co ltd
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Yixing Suha Electric Power Equipment Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
    • 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
    • B01D53/74—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
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/104—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/10—Oxidants
    • B01D2251/106—Peroxides
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
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  • General Chemical & Material Sciences (AREA)
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  • Dispersion Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention relates to the technical field of wet flue gas treatment, and particularly discloses an environment-friendly oxidation treatment device for wet flue gas desulfurization and denitrification, which comprises an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank; the oxidation treatment tank comprises a treatment tank body vertically fixed relative to the ground, a primary oxidation treatment area arranged on the lower half part of the treatment tank body, and a secondary oxidation treatment area arranged on the upper half part of the treatment tank body; the lower end of the treatment tank body is provided with a flue gas inlet; the flue gas inlet is used for communicating the flue gas channel with the primary oxidation treatment area; the upper end of the treatment tank body is provided with a flue gas outlet communicated with the secondary oxidation treatment area; the invention can carry out high-efficiency oxidation treatment on the smoke dust and improve the desulfurization and denitrification rate of wet flue gas treatment.

Description

Environment-friendly oxidation treatment device for wet flue gas desulfurization and denitrification
Technical Field
The invention relates to the technical field of wet flue gas treatment, in particular to an environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration.
Background
As a large consumption household of coal in the thermal power industry, smoke dust particles generated by burning coal in a boiler become a main source of particles in the atmosphere, and simultaneously, the discharged nitrogen oxides and other organic gases in the air can generate chemical reaction to generate ammonium nitrate which is a main source of secondary particles. Therefore, how to control the discharge amount of the atmospheric pollutants in the thermal power industry becomes the focus of the environmental protection problem.
At present, the thermal power industry of China often adopts a desulfurization, dedusting and denitration unit type control technology to control the emission of flue gas pollutants; the most common technology is wet desulfurization and denitration, and calcium oxide or calcium carbonate slurry is usually adopted to absorb sulfur dioxide in a wet washing tower; however, since the smoke contains a large amount of harmful pollutants such as sulfur monoxide and nitrogen monoxide, it is generally necessary to perform oxidation treatment of the harmful pollutants such as sulfur monoxide and nitrogen monoxide by using an oxidation treatment apparatus in the wet treatment, thereby achieving high-efficiency denitrification and denitration.
With the further improvement of the national emission standard of the smoke dust, the emission limit of the smoke dust and the sulfur dioxide discharged by the factory is 5mg/Nm 3 、35mg/Nm 3 Less than 30mg/Nm smoke emissions than before 3 The emission of sulfur dioxide is lower than 200mg/Nm 3 The existing oxidation device has low efficiency of oxidation treatment on smoke dust, so that the final desulfurization and denitrification rate cannot meet the national emission standard, and serious environmental pollution is caused.
Disclosure of Invention
The technical problem solved by the invention is as follows: the existing arrangement has poor effect of oxidizing pollutants such as oxysulfide in smoke dust, and the desulfurization and denitrification efficiency is low in the subsequent wet absorption and extraction.
The technical scheme of the invention is as follows: an environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration comprises an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank;
the oxidation treatment tank comprises a treatment tank body vertically fixed relative to the ground, a primary oxidation treatment area arranged on the lower half part of the treatment tank body, and a secondary oxidation treatment area arranged on the upper half part of the treatment tank body;
the lower end of the treatment tank body is provided with a flue gas inlet; the flue gas inlet is used for communicating the flue gas channel with the primary oxidation treatment area;
the upper end of the treatment tank body is provided with a flue gas outlet communicated with the secondary oxidation treatment area;
the primary oxidation treatment area comprises a central rotating shaft vertically arranged in the center of the flue gas inlet, an air inlet fan arranged at the lower end of the first central rotating shaft and positioned at the flue gas inlet, a conical spiral flow divider arranged at the upper end of the first central rotating shaft and with a conical tip facing the flue gas inlet, and a gaseous oxidant jet flow device arranged above the conical spiral flow divider and communicated with an oxidant supply device;
the gaseous oxidant jet device is arranged on the inner wall of the treatment tank body and is annular;
the upper end of the flue gas inlet is provided with an air supply pipe extending towards the conical surface of the conical spiral splitter; the upper end of the blast pipe is provided with a flow guide ring parallel to the conical surface of the conical spiral flow divider;
spiral shunt strips are uniformly arranged on the conical surface of the conical spiral shunt;
the secondary oxidation treatment area comprises a separation separator arranged in the middle of the treatment tank body, a second central rotating shaft vertically arranged above the separation separator and positioned at the center of the treatment tank body, and a liquid oxidant sprayer arranged on the second central rotating shaft.
Further, the liquid oxidant sprayer comprises a plurality of sprayer mounting frames uniformly arranged on the second central rotating shaft, and an atomizing nozzle arranged on the sprayer mounting frames and communicated with the oxidant supply device;
the sprayer mounting frame comprises a plurality of mounting rods which are uniformly arranged on the second central rotating shaft; the atomizing nozzle is arranged on the mounting rod;
the setting through a plurality of installation poles can improve the spray volume of liquid oxidant, improves the secondary oxidation efficiency to the smoke and dust, is favorable to promoting the desorption rate of oxysulfide.
Furthermore, the blocking separator comprises a dust blocking ring horizontally arranged in the treatment tank body, a liquid oxidant collecting tank arranged in the middle of the dust blocking ring, a flue gas communicating pipe vertically arranged in the center of the liquid oxidant collecting tank and with the lower end communicated with the primary oxidation treatment area, a protective cover arranged above the flue gas communicating pipe, and a connecting column for connecting the protective cover and the dust blocking ring;
the dust blocking ring can block dust with large particle size; the liquid oxidizing agent can be prevented from entering the primary oxidation treatment area through the arrangement of the protective cover, and the collection of the liquid oxidizing agent is completed through the liquid oxidizing agent collecting tank.
Furthermore, a control valve is arranged on the flue gas communicating pipe; the setting of control valve can realize the thorough separation in first order oxidation treatment district and second grade oxidation treatment district, is convenient for separately carry out continuous processing to the flue gas, ensures to realize higher oxidation rate.
Further, the gaseous oxidant jet device comprises two groups of first annular grooves arranged in the treatment tank body, a rotating ring movably arranged in the first annular grooves, and oxidizing gas nozzles uniformly arranged on the inner side wall of the rotating ring; the oxidizing gas is sprayed out along the inner wall of the treatment tank body by the oxidizing gas spray head, so that the oxidizing gas is fully contacted and mixed with the flue gas spirally rising along the inner wall of the treatment tank body, and efficient gaseous oxidation is realized.
Further, a second annular groove is arranged between the two first annular grooves; an airflow driving fan is movably arranged on the second annular groove; the centrifugal action of flue gas can be further strengthened through setting up of air current drive fan for the flue gas realizes abundant mixture with gaseous oxidant along handling jar body inner wall spiral shell screwing in, improves the oxidation rate to oxysulfide.
Furthermore, the secondary oxidation treatment area also comprises a range-increasing baffle ring structure which is uniformly arranged in the treatment tank body and is crossed with the sprayer mounting frame;
the range-extending baffle ring structure comprises a first conical surface baffle ring and a second conical surface baffle ring which are arranged in a crossed manner and have downward conical surfaces;
a central flue gas through hole is formed in the center of the first conical baffle ring; an edge flue gas through hole is formed in the edge of the second conical surface baffle ring; through the arrangement of the first conical surface baffle ring and the second conical surface baffle ring, the flue gas can be fully mixed with the liquid atomizing agent in the treatment tank body, and effective liquid oxidation treatment is carried out.
Further, the device also comprises a fixing frame; a plurality of treatment tank bodies are arranged on the fixing frame;
wherein the smoke outlet of one treatment tank body is connected with the smoke inlet of the other treatment tank body through a connecting pipe; through the connecting pipe with a plurality of treatment tank body intercommunications, can further strengthen the oxidation treatment ability, be favorable to high-efficient SOx/NOx control.
Furthermore, a smoke dust collecting tank is arranged between the air supply pipe and the treatment tank body; the smoke and dust is shunted under the effect of toper spiral shunt behind the blast pipe, forms the spiral air current that rises along handling jar body inner wall, and the dust of big granule falls into the smoke and dust collecting vat under the effect of centrifugal force and gravity, collects the processing to the smoke and dust, possesses certain dust removal function.
The invention has the beneficial effects that: the invention provides an environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration, which can greatly improve the oxidation effect of sulfur oxides in smoke dust by continuously carrying out secondary oxidation treatment on the smoke dust; the device can divide smoke dust through the arrangement of the conical spiral flow divider, drives the smoke dust to spirally rise along the inner wall of the treatment tank body, and enables large-particle dust in the device to rub against the inner wall under the action of centrifugal force and fall off under the action of gravity; the smoke dust and the gaseous oxidant molecules are uniformly mixed in the spiral airflow by uniformly spraying the gaseous oxidant to the spirally rising smoke dust, so that the effective oxidation is realized; the device can effectively prolong the mixing contact time of the smoke dust and the liquid atomized oxidant by arranging the first conical surface baffle ring and the second conical surface baffle ring in the secondary oxidation treatment area, thereby further improving the oxidation treatment effect on the smoke dust.
Drawings
FIG. 1 is a schematic sectional view of the whole of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of a primary oxidation treatment zone in example 1 of the present invention;
FIG. 3 is a schematic structural view of a secondary oxidation treatment region in example 1 of the present invention;
FIG. 4 is a schematic structural view of an oxidizing gas showerhead according to embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the structure of an air flow driving fan in embodiment 2 of the present invention;
FIG. 6 is a schematic structural view of a range extending catch ring structure according to embodiment 3 of the present invention;
FIG. 7 is a schematic structural diagram of a fixing frame and a connecting tube according to embodiment 4 of the present invention;
wherein, 1-a treatment tank body, 10-a flue gas inlet, 11-a flue gas outlet, 12-a smoke dust collecting tank, 2-a primary oxidation treatment area, 20-a central rotating shaft, 21-an air inlet fan, 22-a conical spiral splitter, 220-an air supply pipe, 221-a guide ring, 222-a spiral splitter strip, 23-a gaseous oxidant jet flow device, 230-a first annular groove, 231-a rotating ring, 232-an oxidation gas nozzle, 233-a second annular groove, 24-an air flow driving fan, 3-a secondary oxidation treatment area, 30-a barrier separator, 31-a second central rotating shaft, 32-a liquid oxidant sprayer, 320-a sprayer mounting rack, 321-an atomization nozzle, 322-a mounting rod, 300-a dust blocking ring, 301-a liquid oxidant collecting tank, 301-a gaseous oxidant collecting tank, 302-flue gas communicating pipe, 303-protective cover, 304-connecting column, 4-range-increasing baffle ring structure, 40-first conical baffle ring, 41-second conical baffle ring, 400-central flue gas through hole, 410-edge flue gas through hole, 5-fixing frame and 6-connecting pipe.
Detailed Description
Example 1
The oxidation treatment device for desulfurization and denitrification of the environment-friendly wet flue gas shown in fig. 1 comprises an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank;
the oxidation treatment tank comprises a treatment tank body 1 which is vertically fixed relative to the ground, a primary oxidation treatment area 2 which is arranged at the lower half part of the treatment tank body 1, and a secondary oxidation treatment area 3 which is arranged at the upper half part of the treatment tank body 1;
the lower end of the treatment tank body 1 is provided with a flue gas inlet 10; the flue gas inlet 10 is used for communicating the flue gas channel with the primary oxidation treatment area 2;
the upper end of the treatment tank body 1 is provided with a flue gas outlet 11 communicated with the secondary oxidation treatment area 3;
the primary oxidation treatment zone 2 comprises a central rotating shaft 20 vertically arranged at the center of the flue gas inlet 10, an air inlet fan 21 arranged at the lower end of the first central rotating shaft 20 and positioned at the flue gas inlet 10, a conical spiral flow divider 22 arranged at the upper end of the first central rotating shaft 20 and with a conical tip facing the flue gas inlet 10, and a gaseous oxidant jet flow device 23 arranged above the conical spiral flow divider 22 and communicated with an oxidant supply device;
the gaseous oxidant jet device 23 is arranged on the inner wall of the treatment tank body 1 and is annular;
as shown in fig. 2, the upper end of the flue gas inlet 10 is provided with a blast pipe 220 extending towards the conical surface of the conical spiral splitter 22; the upper end of the blast pipe 220 is provided with a diversion ring 221 which is parallel to the conical surface of the conical spiral diverter 22; a smoke dust collecting tank 12 is arranged between the blast pipe 220 and the treatment tank body 1.
Spiral flow dividing strips 222 are uniformly arranged on the conical surface of the conical spiral flow divider 22;
the secondary oxidation treatment area 3 comprises a separation separator 30 arranged in the middle of the treatment tank body 1, a second central rotating shaft 31 vertically arranged above the separation separator 30 and positioned in the center of the treatment tank body 1, and a liquid oxidant sprayer 32 arranged on the second central rotating shaft 31.
As shown in fig. 3, the liquid oxidizer sprayer 32 includes 3 sprayer mounts 320 uniformly arranged on the second central rotating shaft 31, and a sprayer nozzle 321 arranged on the sprayer mounts 320 and communicating with an oxidizer supply device;
the sprayer mounting frame 320 comprises 5 mounting rods 322 uniformly arranged on the second central rotating shaft 31; the atomizer 321 is mounted on a mounting rod 322.
Separation separator 30 sets up including the level the dirt ring 300 of the inside of treatment tank body 1 sets up the liquid oxidant collecting vat 301 at dirt ring 300 middle part sets up perpendicularly the flue gas communicating pipe 302 of liquid oxidant collecting vat 301 center and lower extreme and one-level oxidation treatment zone 2 intercommunication sets up the safety cover 303 of flue gas communicating pipe 302 top, and connect the spliced pole 304 of safety cover 303 and dirt ring 300.
The flue gas communicating pipe 302 is provided with a control valve.
As shown in fig. 4, the gaseous oxidizing agent spouting means 23 includes two sets of first annular grooves 230 provided inside the treatment tank body 1, a rotating ring 231 movably provided inside the first annular grooves 230, and oxidizing gas nozzles 232 uniformly provided on the inner side walls of the rotating ring 231.
The liquid oxidant arranged in the oxidant supply device is hydrogen peroxide, and the gaseous oxidant is ozone.
The control valve, the atomizing nozzle 321, the oxidizing gas nozzle 232, and the air supply fan 21 are all commercially available products, and the specific product types can be selected by those skilled in the art as needed.
Example 2
The oxidation treatment device for desulfurization and denitrification of the environment-friendly wet flue gas shown in fig. 1 comprises an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank;
the oxidation treatment tank comprises a treatment tank body 1 which is vertically fixed relative to the ground, a primary oxidation treatment area 2 which is arranged at the lower half part of the treatment tank body 1, and a secondary oxidation treatment area 3 which is arranged at the upper half part of the treatment tank body 1;
the lower end of the treatment tank body 1 is provided with a flue gas inlet 10; the flue gas inlet 10 is used for communicating the flue gas channel with the primary oxidation treatment area 2;
the upper end of the treatment tank body 1 is provided with a flue gas outlet 11 communicated with the secondary oxidation treatment area 3;
the primary oxidation treatment zone 2 comprises a central rotating shaft 20 vertically arranged at the center of the flue gas inlet 10, an air inlet fan 21 arranged at the lower end of the first central rotating shaft 20 and positioned at the flue gas inlet 10, a conical spiral flow divider 22 arranged at the upper end of the first central rotating shaft 20 and with a conical tip facing the flue gas inlet 10, and a gaseous oxidant jet flow device 23 arranged above the conical spiral flow divider 22 and communicated with an oxidant supply device;
the gaseous oxidant jet device 23 is arranged on the inner wall of the treatment tank body 1 and is annular;
the upper end of the flue gas inlet 10 is provided with an air supply pipe 220 extending towards the conical surface of the conical spiral flow divider 22; the upper end of the blast pipe 220 is provided with a flow guide ring 221 parallel to the conical surface of the conical spiral flow divider 22; a smoke dust collecting groove 12 is arranged between the blast pipe 220 and the treatment tank body 1.
Spiral flow dividing strips 222 are uniformly arranged on the conical surface of the conical spiral flow divider 22;
the secondary oxidation treatment area 3 comprises a separation separator 30 arranged in the middle of the treatment tank body 1, a second central rotating shaft 31 vertically arranged above the separation separator 30 and positioned in the center of the treatment tank body 1, and a liquid oxidant sprayer 32 arranged on the second central rotating shaft 31.
The liquid oxidant sprayer 32 comprises 3 sprayer mounting brackets 320 uniformly arranged on the second central rotating shaft 31, and a sprayer nozzle 321 arranged on the sprayer mounting brackets 320 and communicated with an oxidant supply device;
the sprayer mounting frame 320 comprises 5 mounting rods 322 uniformly arranged on the second central rotating shaft 31; the atomizer 321 is mounted on a mounting rod 322.
Separation separator 30 sets up including the level the dirt ring 300 of the inside of treatment tank body 1 sets up the liquid oxidant collecting vat 301 at dirt ring 300 middle part sets up perpendicularly the flue gas communicating pipe 302 of liquid oxidant collecting vat 301 center and lower extreme and one-level oxidation treatment zone 2 intercommunication sets up the safety cover 303 of flue gas communicating pipe 302 top, and connect the spliced pole 304 of safety cover 303 and dirt ring 300.
The flue gas communicating pipe 302 is provided with a control valve.
The gaseous oxidant jet device 23 includes two sets of first annular grooves 230 disposed inside the treatment tank body 1, a rotating ring 231 movably disposed inside the first annular grooves 230, and oxidizing gas nozzles 232 uniformly disposed on the inner side walls of the rotating ring 231.
The liquid oxidant arranged in the oxidant supply device is hydrogen peroxide, and the gaseous oxidant is ozone.
As shown in fig. 5, a second annular groove 233 is provided between two of the first annular grooves 230; the second annular groove 230 is movably provided with an airflow driving fan 24.
The air flow driving fan 24, the control valve, the atomizing nozzle 321, the oxidizing gas nozzle 232, and the air supply fan 21 are commercially available products, and the specific product types can be selected by those skilled in the art as needed.
Compared to embodiment 1, the present embodiment is provided with the airflow driving fan 24 between the first annular grooves 230; the centrifugal effect of the smoke can be enhanced through the airflow driving fan 24, the mixing effect of smoke molecules and the gaseous oxidant is enhanced, and the efficiency of oxidation treatment is improved.
Example 3
The oxidation treatment device for desulfurization and denitrification of the environment-friendly wet flue gas shown in fig. 1 comprises an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank;
the oxidation treatment tank comprises a treatment tank body 1 which is vertically fixed relative to the ground, a primary oxidation treatment area 2 which is arranged at the lower half part of the treatment tank body 1, and a secondary oxidation treatment area 3 which is arranged at the upper half part of the treatment tank body 1;
the lower end of the treatment tank body 1 is provided with a flue gas inlet 10; the flue gas inlet 10 is used for communicating the flue gas channel with the primary oxidation treatment area 2;
the upper end of the treatment tank body 1 is provided with a flue gas outlet 11 communicated with the secondary oxidation treatment area 3;
the primary oxidation treatment zone 2 comprises a central rotating shaft 20 vertically arranged at the center of the flue gas inlet 10, an air inlet fan 21 arranged at the lower end of the first central rotating shaft 20 and positioned at the flue gas inlet 10, a conical spiral flow divider 22 arranged at the upper end of the first central rotating shaft 20 and with a conical tip facing the flue gas inlet 10, and a gaseous oxidant jet flow device 23 arranged above the conical spiral flow divider 22 and communicated with an oxidant supply device;
the gaseous oxidant jet device 23 is arranged on the inner wall of the treatment tank body 1 and is annular;
the upper end of the flue gas inlet 10 is provided with an air supply pipe 220 extending towards the conical surface of the conical spiral flow divider 22; the upper end of the blast pipe 220 is provided with a flow guide ring 221 parallel to the conical surface of the conical spiral flow divider 22; a smoke dust collecting tank 12 is arranged between the blast pipe 220 and the treatment tank body 1.
Spiral flow dividing strips 222 are uniformly arranged on the conical surface of the conical spiral flow divider 22;
the secondary oxidation treatment area 3 comprises a separation separator 30 arranged in the middle of the treatment tank body 1, a second central rotating shaft 31 vertically arranged above the separation separator 30 and positioned in the center of the treatment tank body 1, and a liquid oxidant sprayer 32 arranged on the second central rotating shaft 31.
The liquid oxidant sprayer 32 comprises 3 sprayer mounting brackets 320 uniformly arranged on the second central rotating shaft 31, and a sprayer nozzle 321 arranged on the sprayer mounting brackets 320 and communicated with an oxidant supply device;
the sprayer mounting frame 320 comprises 5 mounting rods 322 uniformly arranged on the second central rotating shaft 31; the atomizer 321 is mounted on a mounting rod 322.
Separation separator 30 sets up including the level the dirt ring 300 of the inside of treatment tank body 1 sets up the liquid oxidant collecting vat 301 at dirt ring 300 middle part sets up perpendicularly the flue gas communicating pipe 302 of liquid oxidant collecting vat 301 center and lower extreme and one-level oxidation treatment zone 2 intercommunication sets up the safety cover 303 of flue gas communicating pipe 302 top, and connect the spliced pole 304 of safety cover 303 and dirt ring 300.
The flue gas communicating pipe 302 is provided with a control valve.
The gaseous oxidant jet device 23 includes two sets of first annular grooves 230 disposed inside the treatment tank body 1, a rotating ring 231 movably disposed inside the first annular grooves 230, and oxidizing gas nozzles 232 uniformly disposed on the inner side walls of the rotating ring 231.
The liquid oxidant arranged in the oxidant supply device is hydrogen peroxide, and the gaseous oxidant is ozone.
As shown in fig. 6, the secondary oxidation treatment zone 3 further includes a range-increasing baffle ring structure 4 uniformly arranged in the treatment tank body 1 and crossing the sprayer mounting frame 320;
the range-increasing baffle ring structure 4 comprises a first conical baffle ring 40 and a second conical baffle ring 41 which are arranged in a crossed manner and have downward conical surfaces;
a central flue gas through hole 400 is formed in the center of the first conical baffle ring 40; the edge of the second conical surface baffle ring 41 is provided with an edge flue gas through hole 410.
The air flow driving fan 24, the control valve, the atomizing nozzle 321, the oxidizing gas nozzle 232, and the air supply fan 21 are commercially available products, and the specific product types can be selected by those skilled in the art as needed.
Compared with embodiment 1, the first conical baffle ring 40 and the second conical baffle ring 41 can effectively prolong the mixing contact time of the smoke and the liquid atomized oxidant, thereby further improving the oxidation treatment effect of the smoke.
Example 4
Unlike embodiment 1, as shown in fig. 7, it further includes a fixing frame 5; a plurality of treatment tank bodies 1 are arranged on the fixing frame 5;
wherein the flue gas outlet 11 of one treatment tank body 1 is connected with the flue gas inlet 10 of the other treatment tank body 1 by a connecting pipe 6.

Claims (9)

1. An environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration is characterized by comprising an oxidation treatment tank, a flue gas channel communicated with the oxidation treatment tank, and an oxidant supply device communicated with the oxidation treatment tank;
the oxidation treatment tank comprises a treatment tank body (1) which is vertically fixed relative to the ground, a primary oxidation treatment area (2) which is arranged on the lower half part of the treatment tank body (1), and a secondary oxidation treatment area (3) which is arranged on the upper half part of the treatment tank body (1);
the lower end of the treatment tank body (1) is provided with a flue gas inlet (10); the flue gas inlet (10) is used for communicating the flue gas channel with the primary oxidation treatment area (2);
the upper end of the treatment tank body (1) is provided with a flue gas outlet (11) communicated with the secondary oxidation treatment area (3);
the primary oxidation treatment area (2) comprises a central rotating shaft (20) vertically arranged at the center of the flue gas inlet (10), an air inlet fan (21) arranged at the lower end of the first central rotating shaft (20) and positioned at the flue gas inlet (10), a conical spiral flow divider (22) arranged at the upper end of the first central rotating shaft (20) and with a conical tip facing the flue gas inlet (10), and a gaseous oxidant jet device (23) arranged above the conical spiral flow divider (22) and communicated with an oxidant supply device;
the gaseous oxidant jet device (23) is arranged on the inner wall of the treatment tank body (1) and is annular;
the upper end of the flue gas inlet (10) is provided with an air supply pipe (220) extending towards the conical surface of the conical spiral flow divider (22); the upper end of the blast pipe (220) is provided with a flow guide ring (221) parallel to the conical surface of the conical spiral flow divider (22);
spiral flow dividing strips (222) are uniformly arranged on the conical surface of the conical spiral flow divider (22);
the secondary oxidation treatment area (3) comprises a separation separator (30) arranged in the middle of the treatment tank body (1), a second central rotating shaft (31) vertically arranged above the separation separator (30) and positioned at the center of the treatment tank body (1), and a liquid oxidant sprayer (32) arranged on the second central rotating shaft (31).
2. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 1, wherein the liquid oxidant sprayer (32) comprises a plurality of sprayer mounting brackets (320) uniformly arranged on the second central rotating shaft (31), and an atomizing nozzle (321) arranged on the sprayer mounting brackets (320) and communicated with an oxidant supply device;
the sprayer mounting rack (320) comprises a plurality of mounting rods (322) which are uniformly arranged on the second central rotating shaft (31); the atomizing nozzle (321) is arranged on the mounting rod (322).
3. The oxidation treatment device for the desulfurization and the denitrification of the flue gas by the wet method according to the claim 1, wherein the separation separator (30) comprises a dust-blocking ring (300) horizontally arranged inside the treatment tank body (1), a liquid oxidant collecting tank (301) arranged in the middle of the dust-blocking ring (300), a flue gas communicating pipe (302) vertically arranged at the center of the liquid oxidant collecting tank (301) and with the lower end communicated with the primary oxidation treatment area (2), a protection cover (303) arranged above the flue gas communicating pipe (302), and a connecting column (304) connecting the protection cover (303) with the dust-blocking ring (300).
4. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 1, wherein a control valve is arranged on the flue gas communicating pipe (302).
5. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 1, wherein the gaseous oxidant jet device (23) comprises two groups of first annular grooves (230) arranged inside the treatment tank body (1), a rotating ring (231) movably arranged in the first annular grooves (230), and oxidation gas nozzles (232) uniformly arranged on the inner side wall of the rotating ring (231).
6. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 5, wherein a second annular groove (233) is arranged between the two first annular grooves (230); an airflow driving fan (24) is movably arranged on the second annular groove (230).
7. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 1, wherein the secondary oxidation treatment zone (3) further comprises a range-increasing baffle ring structure (4) which is uniformly arranged in the treatment tank body (1) and is crossed with the sprayer mounting frame (320);
the range-increasing baffle ring structure (4) comprises a first conical baffle ring (40) and a second conical baffle ring (41) which are arranged in a crossed mode and have downward conical surfaces;
a central smoke through hole (400) is formed in the center of the first conical baffle ring (40); edge flue gas through holes (410) are formed in the edge of the second conical surface baffle ring (41).
8. The environment-friendly oxidation treatment device for wet flue gas desulfurization and denitration according to claim 1, further comprising a fixing frame (5); a plurality of treatment tank bodies (1) are arranged on the fixing frame (5);
wherein the flue gas outlet (11) of one treatment tank body (1) is connected with the flue gas inlet (10) of the other treatment tank body (1) through a connecting pipe (6).
9. The oxidation treatment device for desulfurization and denitrification of flue gas by a wet method in an environment-friendly manner according to claim 1, wherein a smoke dust collecting tank (12) is arranged between the blast pipe (220) and the treatment tank body (1).
CN202210364046.6A 2022-04-07 2022-04-07 Environment-friendly wet flue gas desulfurization and denitrification oxidation treatment device Active CN114870593B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115814594A (en) * 2022-10-21 2023-03-21 江苏申正建设工程有限公司 Flue gas desulfurization denitration purifier in chimney

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CN111228982A (en) * 2020-01-14 2020-06-05 张德杰 Waste gas treatment device and treatment method thereof
CN211837205U (en) * 2019-12-05 2020-11-03 盐城工业职业技术学院 Chemical acid mist waste gas treatment equipment
CN212701236U (en) * 2020-07-07 2021-03-16 安徽永利新材料科技有限公司 Packing tower for polyester resin synthesis

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Publication number Priority date Publication date Assignee Title
CN208389772U (en) * 2018-05-25 2019-01-18 大连迈克环境科技工程有限公司 The out of stock system of the iron ammonia process of desulfurization
CN211837205U (en) * 2019-12-05 2020-11-03 盐城工业职业技术学院 Chemical acid mist waste gas treatment equipment
CN111228982A (en) * 2020-01-14 2020-06-05 张德杰 Waste gas treatment device and treatment method thereof
CN212701236U (en) * 2020-07-07 2021-03-16 安徽永利新材料科技有限公司 Packing tower for polyester resin synthesis

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115814594A (en) * 2022-10-21 2023-03-21 江苏申正建设工程有限公司 Flue gas desulfurization denitration purifier in chimney
CN115814594B (en) * 2022-10-21 2024-01-12 江苏申正建设工程有限公司 Flue gas desulfurization and denitrification purification device in chimney

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