CN110585820A - Industrial waste gas purification method - Google Patents
Industrial waste gas purification method Download PDFInfo
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- CN110585820A CN110585820A CN201910907540.0A CN201910907540A CN110585820A CN 110585820 A CN110585820 A CN 110585820A CN 201910907540 A CN201910907540 A CN 201910907540A CN 110585820 A CN110585820 A CN 110585820A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
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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
- B01D53/007—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 by irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01D53/68—Halogens or halogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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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
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/606—Carbonates
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- General Chemical & Material Sciences (AREA)
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- Treating Waste Gases (AREA)
Abstract
The invention belongs to the technical field of waste gas purification, and particularly relates to an industrial waste gas purification method, wherein purification equipment used in the purification method comprises a shell; the upper end of the shell is provided with an end cover connected through a bolt, and the center of the end cover is provided with an air inlet pipe; the other end of the air inlet pipe penetrates through the end cover and extends into the shell, and the photolysis unit comprises a photolysis chamber and a UV photolysis lamp; a plurality of air outlet holes are formed in the lower end face of the fourth photolysis chamber; the reaction unit comprises a fixed seat and a movable seat; the outer ring at the upper end of the fixed seat is fixedly connected on the side wall of the shell, and a through hole is formed in the threaded part at the lower end of the fixed seat; the upper end face of the movable seat is connected with the lower end face of the photolysis unit through a first spring; a cavity enclosed by the lower surface of the fixed seat and the lower surface in the shell is filled with a mixed solution of sodium hydroxide and ammonia water; an air outlet pipe is arranged at the lower end of the shell, and a layer of semipermeable membrane is covered in the air outlet pipe; the industrial waste gas is purified by a UV photolysis lamp and a mixed solution of sodium hydroxide and ammonia water.
Description
Technical Field
The invention belongs to the technical field of waste gas purification, and particularly relates to an industrial waste gas purification method.
Background
Various types of purification methods are known in the art for the purification of industrial waste gases, among which are mainly exhaust gas purification methods using the action of heat.
For example, it is known to purify process gases by combustion oxidation or thermal decomposition in a reaction chamber; the method comprises introducing a flame generated by a fuel gas and oxygen and the exhaust gas from the reaction chamber into a scrubbing or adsorption chamber, wherein the soluble components of the solids in the exhaust gas are removed by an adsorbent; as fuel gas, hydrogen or natural gas may be mentioned, for example. The cleaned exhaust gas from which the harmful or toxic components have been removed is finally discharged to the atmosphere by means of a pneumatic technical device.
The industrial waste gas treatment method uses hydrogen or natural gas, consumes energy to purify industrial waste gas, increases the cost of industrial waste purification, and the waste gas is complex in the washing process of the prepared solution and can not reach the standard, so that the purified waste gas still has harmful substances to pollute the air.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an industrial waste gas purification method which solves the problems that industrial waste gas is purified by combustion energy, the waste gas is not thoroughly washed by a prepared solution, and harmful substances remain in the waste gas.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an industrial waste gas purification method, which comprises the following steps:
s1: removing impurities, namely collecting industrial waste gas in a centralized manner, then removing particles in the waste gas through a filter screen, then spraying water to remove dust in the waste gas, cooling the waste gas after dust removal, and finally cooling to room temperature;
s2: introducing the waste gas subjected to impurity removal in the S1 into a sodium carbonate solution to remove gaseous fluorination, and then introducing the waste gas into a potassium permanganate solution to mix and react chloride and the potassium permanganate solution;
s3: introducing the waste gas in the S2 into alkaline purification equipment under high pressure, removing chloride, performing desulfurization and denitrification treatment to form industrial gas, collecting the industrial gas, and recycling the treatment liquid used in the treatment process;
the purification apparatus used in the above purification method S3 includes a housing; an end cover connected through a bolt is arranged at the upper end of the shell, and an air inlet pipe is arranged in the center of the end cover; one end of the air inlet pipe is flush with the upper end face of the end cover, and the other end of the air inlet pipe penetrates through the end cover to extend into the shell and is communicated with the photolysis unit; the photolysis unit comprises a photolysis chamber and a UV photolysis lamp; the UV photolysis lamp is arranged on the inner side walls of the first photolysis chamber, the second photolysis chamber, the third photolysis chamber and the fourth photolysis chamber, and a plurality of air outlet holes are formed in the lower end face of the fourth photolysis chamber; a reaction unit is arranged below the photolysis unit; the reaction unit comprises a fixed seat and a movable seat; the outer ring of the upper end of the fixed seat is fixedly connected to the side wall of the shell, the cutting surface of the fixed seat is funnel-shaped, and the lower end of the fixed seat is connected with the upper end of the movable seat through threads; and the thread part at the lower end of the fixed seat is provided with a through hole; the upper end face of the movable seat is rotatably connected with the lower end face of the photolysis unit through a first spring, and the section of the movable seat is in a funnel shape; a cavity enclosed by the lower surface of the fixed seat and the lower surface in the shell is filled with a mixed solution of sodium hydroxide and ammonia water; an air outlet pipe is arranged at the lower end of the shell, and a layer of semipermeable membrane is covered in the air outlet pipe; the industrial waste gas is purified by a UV photolysis lamp and a mixed solution of sodium hydroxide and ammonia water; when in use, the waste gas is treated by high pressure and is led into the first photolysis chamber from the air inlet pipeline, then the waste gas is led into the second photolysis chamber, the third photolysis chamber and the fourth photolysis chamber through the one-way valve in sequence, the waste gas is irradiated by the UV photolysis lamp when the waste gas circulates in the photolysis unit, the UV photolysis lamp emits ultraviolet light to reduce the molecular chain of organic and inorganic high molecular compounds in the waste gas, then the waste gas is discharged through a gas outlet hole on the lower end surface of the fourth photolysis chamber, the high-pressure waste gas acts on the upper end surface of the movable seat to enable the movable seat to move downwards, the movable seat also rotates when moving downwards, when the upper end surface of the movable seat is lower than the through hole arranged on the fixed seat, the waste gas is introduced into the mixed solution from the through hole, the mixed solution reacts with the waste gas to remove chloride in the waste gas, and finally the waste gas is discharged from the gas outlet pipe through the semi-permeable membrane and collected in a centralized manner.
Preferably, the lower end of the movable seat is symmetrically provided with teeterboards, each teeterboard is hinged on the inner bottom surface of the shell, each teeterboard is fixedly connected with one end of a first rope, and the other end of the first rope penetrates through the fixed seat and is connected with the upper end surface of the movable seat; the seesaw is driven to rotate by pulling the first rope through the downward movement of the movable seat; during the use, waste gas is used in the sliding seat for the sliding seat downstream, and simultaneously, the sliding seat pulls the seesaw through a rope, and then the seesaw rotates around its pin joint, and the seesaw stirs the mixed solution when rotating for waste gas and mixed solution's reaction.
Preferably, the upper surface of the movable seat is symmetrically provided with a first groove, and each first groove is internally provided with a stirring unit; the stirring unit comprises a stirring sheet, a first rod and a second spring; the end part of the shifting piece is connected to the sliding block in the first groove through a gear; the first rod is connected with each shifting piece in series, and the upper end of the first rod is connected with the side wall of the first groove through a first spring; the seesaw extrudes the first rod to drive the shifting piece to swing, so that the mixed solution is stirred; during the use, the seesaw is rotating the while, and the seesaw touches and extrudes a pole, and the sliding seat is in static state sliding seat and does not rotate this moment, and a pole is corresponding with the seesaw position, and a pole is extruded the back, and a pole promotes the plectrum and rotates, and the plectrum rotates, stirs mixed solution for the reaction of mixed solution and waste gas, and after the plectrum rotated, a pole drove the plectrum once more and rotates under the effect of No. two springs, and the plectrum stirs mixed solution once more.
Preferably, an elastic sheet is arranged below the movable seat; the elastic sheet is in an arch bridge shape; the elastic sheet is fixedly connected with the inner bottom surface of the shell, and the wall thickness of the elastic sheet is gradually increased from bottom to top; one end of each private chip board is lapped on the elastic sheet; during the use, when the seesaw extrudees a pole, the seesaw extrudees the shell fragment simultaneously, and the shell fragment is because of receiving the extrusion, and the shell fragment surface is recessed, and the mixed solution is stirring the while, and the mixed solution forms the vortex in the recessed department of shell fragment, and the vortex accelerates mixed solution's flow to accelerate waste gas and mixed solution's reaction efficiency.
Preferably, a plurality of third springs are connected between the elastic sheet and the inner bottom surface of the shell; the upper end surface of the elastic sheet is protruded to extrude the movable seat to recover the original position through a third spring; when the seesaw is used, the elastic sheet is extruded, the upper end face of the elastic sheet is protruded, the movable seat is pushed up by the upper end face of the elastic sheet, the movable seat moves upwards, the movable seat finally returns to the original position, the first rope is loosened, the seesaw does not extrude the elastic sheet any more, and the third spring pulls the elastic sheet back to the original position.
Preferably, an active sponge is arranged below an air outlet formed in the lower end face of the fourth photolysis chamber; the active sponge absorbs the particles in the waste gas to purify the industrial waste gas; during the use, when waste gas discharged from the venthole of No. four photolysis rooms, waste gas passed through active sponge, and some particulate matters in the waste gas just adsorbed on active sponge, reduce the particulate matter entering reaction unit in the waste gas, avoid the long-term particulate matter accumulation in the waste gas to influence reaction unit's normal operating.
The invention has the technical effects and advantages that:
1. according to the industrial waste gas purification method, the UV photolysis lamp emits UV light, the molecular chains of organic and inorganic high molecular compounds in the waste gas are reduced, and the chlorine in the waste gas can be effectively reacted and neutralized by the sodium hydroxide and the ammonia water in the mixed solution in the stirring process, so that the mixed solution which completely removes harmful substances in the waste gas can be recycled after the reaction.
2. According to the industrial waste gas purification method, the stirring piece swings to stir the mixed solution, so that the reaction of waste gas and the mixed solution is accelerated, the active sponge timely adsorbs particles in the waste gas to purify the waste gas, and the particles can be prevented from entering the reaction unit to influence the normal operation of the reaction unit.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic perspective view of a purification apparatus used in the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
in the figure: the photolysis device comprises a shell 1, an end cover 11, an air inlet pipe 12, an air outlet pipe 13, a photolysis unit 2, a photolysis chamber 21, a first photolysis chamber 211, a second photolysis chamber 212, a third photolysis chamber 213, a fourth photolysis chamber 214, an air outlet hole 215, an active sponge 216, a UV photolysis lamp 22, a one-way valve 23, a reaction unit 3, a fixed seat 31, a through hole 311, a movable seat 32, a seesaw 321, a first groove 322, an elastic sheet 323, a third spring 324, a stirring unit 4, a shifting sheet 41, a first rod 42 and a second spring 43.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the industrial waste gas purification method according to the present invention includes the steps of:
s1: removing impurities, namely collecting industrial waste gas in a centralized manner, then removing particles in the waste gas through a filter screen, then spraying water to remove dust in the waste gas, cooling the waste gas after dust removal, and finally cooling to room temperature;
s2: introducing the waste gas subjected to impurity removal in the S1 into a sodium carbonate solution to remove gaseous fluorination, and then introducing the waste gas into a potassium permanganate solution to mix and react chloride and the potassium permanganate solution;
s3: introducing the waste gas in the S2 into alkaline purification equipment under high pressure, removing chloride, performing desulfurization and denitrification treatment to form industrial gas, collecting the industrial gas, and recycling the treatment liquid used in the treatment process;
the purification apparatus used in the above purification method S3 includes a housing 1; an end cover 11 connected through a bolt is arranged at the upper end of the shell 1, and an air inlet pipe 12 is arranged in the center of the end cover 11; one end of the air inlet pipe 12 is flush with the upper end face of the end cover 11, and the other end of the air inlet pipe 12 penetrates through the end cover 11 to extend into the shell 1 and is communicated with the photolysis unit 2; the photolysis unit 2 includes a photolysis chamber 21 and a UV photolysis lamp 22; the photolysis chamber 21 is divided into four parts, namely a first photolysis chamber 211, a second photolysis chamber 212, a third photolysis chamber 213 and a fourth photolysis chamber 214, wherein the first photolysis chamber 211 is communicated with an air inlet formed in the side wall of the air inlet pipe 12, the first photolysis chamber 211 is communicated with the second photolysis chamber 212 through a one-way valve 23, the second photolysis chamber 212 is communicated with the third photolysis chamber 213 through the one-way valve 23, the third photolysis chamber 213 is communicated with the fourth photolysis chamber 214 through the one-way valve 23, the first photolysis chamber 211, the second photolysis chamber 212, the third photolysis chamber 213 and the fourth photolysis chamber 214 are internally provided with UV photolysis lamps 22 on the inner side walls, and the lower end face of the fourth photolysis chamber 214 is provided with a plurality of air outlet holes 215; a reaction unit 3 is arranged below the photolysis unit 2; the reaction unit 3 comprises a fixed seat 31 and a movable seat 32; the outer ring of the upper end of the fixed seat 31 is fixedly connected to the side wall of the shell 1, the cutting surface of the fixed seat 31 is funnel-shaped, and the lower end of the fixed seat 31 is connected with the upper end of the movable seat 32 through threads; a through hole 311 is formed in the threaded portion at the lower end of the fixed seat 31; the upper end surface of the movable seat 32 is rotatably connected with the lower end surface of the photolysis unit 2 through a first spring, and the section surface of the movable seat 32 is funnel-shaped; a cavity enclosed by the lower surface of the fixed seat 31 and the inner lower surface of the shell 1 is filled with a mixed solution of sodium hydroxide and ammonia water; the lower end of the shell 1 is provided with an air outlet pipe 13, and the air outlet pipe 13 is covered by a semipermeable membrane; the industrial waste gas is purified by the UV photolysis lamp 22 and the mixed solution of sodium hydroxide and ammonia water; when the device is used, waste gas is introduced into the first photolysis chamber 211 from the gas inlet pipe 12 through high-pressure treatment, then the waste gas is introduced into the second photolysis chamber 212, the third photolysis chamber 213 and the fourth photolysis chamber 214 through the check valve 23 in sequence, the waste gas is irradiated by the UV photolysis lamp 22 while circulating in the photolysis unit 2, the UV photolysis lamp 22 emits ultraviolet light to reduce the molecular chain of organic and inorganic high molecular compounds in the waste gas, then the waste gas is discharged through the gas outlet 215 on the lower end surface of the fourth photolysis chamber 214, the high-pressure waste gas acts on the upper end surface of the movable seat 32 to enable the movable seat 32 to move downwards, the movable seat 32 also rotates while moving downwards, when the upper end surface of the movable seat 32 is lower than the through hole 311 arranged on the fixed seat 31, the waste gas is introduced into a mixed solution from the through hole 311, the mixed solution reacts with the waste gas to remove chlorides in the waste gas, finally, the waste gas is discharged from the gas outlet pipe 13 through the semi-permeable membrane and collected in a concentrated manner.
As an implementation mode of the invention, seesaws 321 are symmetrically arranged at the lower end of the movable seat 32, each seesaw 321 is hinged on the inner bottom surface of the housing 1, each seesaw 321 is fixedly connected with one end of a first rope, and the other end of the first rope passes through the fixed seat 31 and is connected with the upper end surface of the movable seat 32; the first rope is pulled to drive the seesaw 321 through the downward movement of the movable seat 32, so that the rotation of the seesaw 321 is realized; during the use, waste gas is used in the sliding seat 32 for sliding seat 32 downstream, and simultaneously, sliding seat 32 pulls seesaw 321 through a rope, and then seesaw 321 rotates around its pin joint, and seesaw 321 stirs the mixed solution when rotating for waste gas and mixed solution's reaction.
As an embodiment of the present invention, first grooves 322 are symmetrically formed on the upper surface of the movable seat 32, and a stirring unit 4 is disposed in each first groove 322; the stirring unit 4 comprises a stirring sheet 41, a first rod 42 and a second spring 43; the number of the shifting pieces 41 is multiple, and the end parts of the shifting pieces 41 are connected to the sliding blocks in the first grooves 322 through gears; the first rod 42 is connected with each shifting piece 41 in series, and the upper end of the first rod 42 is connected with the side wall of the first groove 322 through a first spring; the seesaw 321 extrudes the first rod 42 to drive the shifting piece 41 to swing, so that the mixed solution is stirred; when the device is used, the seesaw 321 rotates, the seesaw 321 touches and extrudes the first rod 42, the movable seat 32 is not rotated when in a static state, the first rod 42 corresponds to the seesaw 321, the first rod 42 pushes the shifting piece 41 to rotate after the first rod 42 is extruded, the shifting piece 41 rotates to stir mixed solution to accelerate the reaction of the mixed solution and waste gas, the first rod 42 drives the shifting piece 41 to rotate again under the action of the second spring 43 after the shifting piece 41 rotates, and the shifting piece 41 stirs the mixed solution again.
As an embodiment of the present invention, an elastic sheet 323 is disposed below the movable seat 32; the elastic sheet 323 is in an arch bridge shape; the elastic sheet 323 is fixedly connected with the inner bottom surface of the shell 1, and the wall thickness of the elastic sheet 323 is gradually increased from bottom to top; one end of each private plate is lapped on the elastic sheet 323; when the device is used, when the seesaw 321 extrudes the first rod 42, the seesaw 321 simultaneously extrudes the elastic sheet 323, the surface of the elastic sheet 323 is concave because the elastic sheet 323 is extruded, the mixed solution is stirred, and simultaneously, the mixed solution forms a vortex at the concave part of the elastic sheet 323, and the vortex accelerates the flow of the mixed solution, so that the reaction efficiency of waste gas and the mixed solution is accelerated.
As an embodiment of the present invention, a plurality of third springs 324 are connected between the elastic sheet 323 and the inner bottom surface of the housing 1; the upper end surface of the elastic sheet 323 is protruded to extrude the movable seat 32 to return to the original position through the third spring 324; when the rope is used, the elastic sheet 323 is extruded, the upper end face of the elastic sheet 323 protrudes, the movable seat 32 is pushed up by the upper end face of the elastic sheet 323, the movable seat 32 moves upwards, the movable seat 32 finally returns to the original position, the first rope is loosened, the seesaw 321 does not extrude the elastic sheet 323, and the third spring 324 pulls the elastic sheet 323 back to the original position.
As an embodiment of the present invention, an active sponge 216 is disposed below an air outlet 215 formed on a lower end surface of the No. four photolysis chamber 214; the active sponge 216 absorbs the particles in the waste gas to purify the industrial waste gas; during the use, when waste gas discharged from air outlet 215 of No. four photolysis rooms 214, waste gas passed through active sponge 216, some particulate matters in the waste gas just adsorbed on active sponge 216, reduce the particulate matter entering reaction unit 3 in the waste gas, avoid the long-term particulate matter accumulation in the waste gas to influence reaction unit 3's normal operating.
When the device is used, waste gas is introduced into the first photolysis chamber 211 from the gas inlet pipe 12 through high-pressure treatment, then the waste gas is introduced into the second photolysis chamber 212, the third photolysis chamber 213 and the fourth photolysis chamber 214 through the check valve 23 in sequence, the waste gas is irradiated by the UV photolysis lamp 22 while circulating in the photolysis unit 2, the UV photolysis lamp 22 emits ultraviolet light to reduce the molecular chain of organic and inorganic high molecular compounds in the waste gas, then the waste gas is discharged through the gas outlet 215 on the lower end surface of the fourth photolysis chamber 214, high-pressure waste gas acts on the upper end surface of the movable seat 32 to enable the movable seat 32 to move downwards, the movable seat 32 also rotates while moving downwards, when the upper end surface of the movable seat 32 is lower than the through hole 311 formed on the fixed seat 31, the waste gas is introduced into a mixed solution from the through hole 311, the mixed solution reacts with the waste gas to remove chlorides in the waste gas, finally, the waste gas is discharged from the gas outlet pipe 13 through the semi-permeable membrane and is collected in a centralized way; the waste gas acts on the movable seat 32, so that the movable seat 32 moves downwards, meanwhile, the movable seat 32 pulls the seesaw 321 through a first rope, then the seesaw 321 rotates around the hinged point, and the seesaw 321 stirs the mixed solution while rotating, so that the reaction of the waste gas and the mixed solution is accelerated; when the seesaw 321 rotates, the seesaw 321 touches and extrudes the first rod 42, the movable seat 32 is in a static state at the moment, the movable seat 32 does not rotate, the first rod 42 corresponds to the seesaw 321, the first rod 42 pushes the shifting piece 41 to rotate after the first rod 42 is extruded, the shifting piece 41 rotates to stir the mixed solution, the reaction of the mixed solution and the waste gas is accelerated, the first rod 42 drives the shifting piece 41 to rotate again under the action of the second spring 43 after the shifting piece 41 rotates, and the shifting piece 41 stirs the mixed solution again; when the seesaw 321 presses the first rod 42, the seesaw 321 presses the elastic sheet 323 at the same time, the surface of the elastic sheet 323 is concave due to the pressing of the elastic sheet 323, the mixed solution is stirred, and the mixed solution forms a vortex at the concave part of the elastic sheet 323, and the vortex accelerates the flow of the mixed solution, so that the reaction efficiency of the waste gas and the mixed solution is accelerated; the elastic sheet 323 is extruded, the upper end face of the elastic sheet 323 protrudes, the movable seat 32 is pushed up by the upper end face of the elastic sheet 323, the movable seat 32 moves upwards, the movable seat 32 finally returns to the original position, then the first rope is loosened, the seesaw 321 does not extrude the elastic sheet 323 any more, and the third spring 324 pulls the elastic sheet 323 back to the original position; when exhaust gas is discharged from the air outlet 215 of the fourth photolysis chamber 214, the exhaust gas passes through the active sponge 216, some particles in the exhaust gas are adsorbed on the active sponge 216, the particles in the exhaust gas are reduced to enter the reaction unit 3, and the influence of long-term accumulation of the particles in the exhaust gas on the normal operation of the reaction unit 3 is avoided.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A method for purifying industrial waste gas is characterized in that: the purification method comprises the following steps:
s1: removing impurities, namely collecting industrial waste gas in a centralized manner, then removing particles in the waste gas through a filter screen, then spraying water to remove dust in the waste gas, cooling the waste gas after dust removal, and finally cooling to room temperature;
s2: introducing the waste gas subjected to impurity removal in the S1 into a sodium carbonate solution to remove gaseous fluorination, and then introducing the waste gas into a potassium permanganate solution to mix and react chloride and the potassium permanganate solution;
s3: introducing the waste gas in the S2 into alkaline purification equipment under high pressure, removing chloride, performing desulfurization and denitrification treatment to form industrial gas, collecting the industrial gas, and recycling the treatment liquid used in the treatment process;
the purification apparatus used in the above purification method S3 includes a casing (1); an end cover (11) connected through a bolt is arranged at the upper end of the shell (1), and an air inlet pipe (12) is arranged in the center of the end cover (11); one end of the air inlet pipe (12) is flush with the upper end face of the end cover (11), and the other end of the air inlet pipe (12) penetrates through the end cover (11) to extend into the shell (1) and is communicated with the photolysis unit (2); the photolysis unit (2) comprises a photolysis chamber (21) and a UV photolysis lamp (22); photolysis room (21) divide into four, and be one photolysis room (211) respectively, No. two photolysis rooms (212), No. three photolysis rooms (213) and No. four photolysis rooms (214), the air inlet intercommunication of seting up on one photolysis room (211) and intake pipe (12) lateral wall, communicate through check valve (23) between No. one photolysis room (211) and No. two photolysis rooms (212), No. two photolysis rooms (212) communicate through check valve (23) with No. three photolysis room (213), communicate through check valve (23) between No. three photolysis room (213) and No. four photolysis rooms (214), and No. one photolysis room (211), No. two photolysis rooms (212), be equipped with UV photolysis lamp (22) on No. three photolysis room (213) and No. four photolysis room (214) inside wall, a plurality of photovents (215) are seted up to No. four photolysis room (214) lower terminal surface; a reaction unit (3) is arranged below the photolysis unit (2); the reaction unit (3) comprises a fixed seat (31) and a movable seat (32); the outer ring of the upper end of the fixed seat (31) is fixedly connected to the side wall of the shell (1), the cutting surface of the fixed seat (31) is funnel-shaped, and the lower end of the fixed seat (31) is connected with the upper end of the movable seat (32) through threads; a through hole (311) is arranged at the threaded part at the lower end of the fixed seat (31); the upper end face of the movable seat (32) is rotatably connected with the lower end face of the photolysis unit (2) through a first spring, and the cutting face of the movable seat (32) is funnel-shaped; a cavity enclosed by the lower surface of the fixed seat (31) and the inner lower surface of the shell (1) is filled with a mixed solution of sodium hydroxide and ammonia water; an air outlet pipe (13) is arranged at the lower end of the shell (1), and a semipermeable membrane is covered in the air outlet pipe (13); the industrial waste gas is purified by a UV photolysis lamp (22) and a mixed solution of sodium hydroxide and ammonia water.
2. The method for purifying industrial waste gas according to claim 1, wherein: seesaws (321) are symmetrically arranged at the lower end of the movable seat (32), each seesaw (321) is hinged to the inner bottom surface of the shell (1), each seesaw (321) is fixedly connected with one end of a first rope, and the other end of the first rope penetrates through the fixed seat (31) and is connected with the upper end surface of the movable seat (32); the seesaw (321) is driven by pulling the first rope through the downward movement of the movable seat (32), so that the rotation of the seesaw (321) is realized.
3. The method for purifying industrial waste gas according to claim 2, wherein: first grooves (322) are symmetrically formed in the upper surface of the movable seat (32), and a stirring unit (4) is arranged in each first groove (322); the stirring unit (4) comprises a shifting sheet (41), a first rod (42) and a second spring (43); the number of the shifting pieces (41) is multiple, and the end parts of the shifting pieces (41) are connected to the sliding blocks in the first groove (322) through gears; the first rod (42) is connected with each shifting piece (41) in series, and the upper end of the first rod (42) is connected to the side wall of the first groove (322) through a first spring; a seesaw (321) extrudes a first rod (42) to drive a shifting sheet (41) to swing, so that the mixed solution is stirred.
4. A method for purifying industrial waste gas according to claim 3, characterized in that: an elastic sheet (323) is arranged below the movable seat (32); the elastic sheet (323) is in an arch bridge shape; the elastic sheet (323) is fixedly connected with the inner bottom surface of the shell (1), and the wall thickness of the elastic sheet (323) is gradually increased from bottom to top; one end of each silent plate is lapped on the elastic sheet (323).
5. The method for purifying industrial waste gas according to claim 4, wherein: a plurality of third springs (324) are connected between the elastic sheet (323) and the inner bottom surface of the shell (1); the upper end surface of the elastic sheet (323) is protruded to extrude the movable seat (32) to recover the original position through the third spring (324).
6. The method for purifying industrial waste gas according to claim 1, wherein: an active sponge (216) is arranged below an air outlet (215) formed in the lower end face of the fourth photolysis chamber (214); the active sponge (216) absorbs the particles in the waste gas to purify the industrial waste gas.
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