CN112221308A - VOCs industrial waste gas treatment system - Google Patents
VOCs industrial waste gas treatment system Download PDFInfo
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- CN112221308A CN112221308A CN202010948825.1A CN202010948825A CN112221308A CN 112221308 A CN112221308 A CN 112221308A CN 202010948825 A CN202010948825 A CN 202010948825A CN 112221308 A CN112221308 A CN 112221308A
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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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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Abstract
The invention belongs to the technical field of waste gas treatment, and particularly relates to a VOCs industrial waste gas treatment system; the VOCs industrial waste gas purification tower comprises a tower body and a tower top, wherein the tower top is arranged at the top of the tower body, the air inlet pipe is arranged at the position, close to the bottom, of the side wall of the tower body, the central position of the top surface of the air outlet pipe tower is arranged at the central position, and a first Venturi tube and a second Venturi tube are sequentially arranged on the side wall of the tower body from bottom to top; according to the invention, diesel oil is injected into the VOCs industrial waste gas purification tower to serve as an absorbent, and the combustion unit arranged on the second Venturi tube on the side wall of the tower body is used for comprehensively treating the VOCs industrial waste gas by using the absorption method and the combustion method, so that harmful components in the VOCs industrial waste gas are removed more thoroughly, the diesel oil absorbent is reasonably treated, secondary pollution is avoided, and the harm to the environment is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a VOCs industrial waste gas treatment system.
Background
VOCs (volatile organic compounds), which are the general term for a class of chemical substances, are volatile organic compounds. VOCs are harmful substances to human bodies, and have two main aspects of harm to the human bodies: one is that the harmful components directly affect the human health, and the other is that VOCs can form PM2.5 precursor, thereby indirectly affecting the human health. VOCs have complex compositions and mainly comprise alkanes, alkenes, aromatic hydrocarbons, halogenated hydrocarbons, oxygenated hydrocarbons, nitrogen hydrocarbons, sulfur hydrocarbons, low-boiling polycyclic aromatic hydrocarbons and the like. Common classes of VOCs include toluene, xylene, p-dichlorobenzene, ethylbenzene, styrene, formaldehyde, acetaldehyde, and the like. The industrial emission is a main VOCs pollution source and has the characteristics of concentrated emission, high emission intensity, high concentration and complex components.
At present, the treatment methods for VOCs in industry mainly include adsorption method, absorption method, condensation method, membrane separation method, biodegradation method, incineration method and the like, and the following methods are briefly introduced:
1) an adsorption method: the adsorbent is used to accumulate or condense the pollutants in the waste gas mixture on the surface, so as to achieve the purpose of separation and removal. The method has the advantages of simple process, high purification efficiency, low primary investment, low operating cost, larger system resistance, easy blockage and low regeneration efficiency, and is suitable for purifying the medium-low concentration VOCs.
2) Absorption method: the washing method is to utilize absorbent to selectively absorb various mixed components or certain components in waste gas to purify waste gas. The method has the advantages of simple equipment, convenient maintenance, small system resistance, low energy consumption, low purification efficiency and difficult achievement of the treated tail gas to the national standard.
3) Condensation method: the waste gas is cooled to below the dew point of the VOCs components, and the VOCs components are condensed into liquid for recycling. Is mainly used for treating VOCs with high concentration and recovery value of single component. The method can effectively recover the effective components in the waste gas, and has the defects of higher treatment cost and complex technology.
4) Membrane separation method: and (3) separating VOCs substances by adopting an artificially synthesized membrane. Is suitable for treating high-concentration VOCs. The method can effectively recover the effective components in the waste gas, has high recovery efficiency and has the defects of high cost, membrane pollution and poor stability of the membrane.
5) And (3) biodegradation: the microorganisms are utilized to digest and metabolize the pollutants in the waste gas, so that the pollutants are converted into harmless water, carbon dioxide and other inorganic salts. The method has the advantages of low energy consumption, low cost, large occupied area and limited application range.
6) The burning method comprises the following steps: the organic matters contained in the waste gas are combustible substances, and the incineration method is to directly introduce the waste gas into a special heating furnace for incineration. The method can completely burn the low-concentration waste gas and has the defect of relatively high energy consumption for treatment.
From the above analysis and comparison, the existing VOCs treatment methods have advantages and disadvantages. With the implementation of new environmental protection methods, the requirements on environmental protection are higher and higher, and the environmental protection can be better realized only by comprehensively applying various methods to treat the VOCs industrial waste gas.
In the Chinese invention patent (application number: 2015106809118), the invention provides VOCs waste gas treatment equipment, which comprises a washing tower, a drying filter box, a gas processor and an induced air system, wherein the gas processor comprises a UV photocatalysis processor and a plasma processor; the VOCs waste gas treatment equipment has higher treatment efficiency, higher safety and more thorough waste gas treatment; in addition, the equipment is used for treating the VOCs waste gas, so that the energy consumption can be greatly reduced, and the use cost is greatly reduced due to the simple structure and convenient maintenance; however, the invention mainly applies an absorption method to enable the VOCs waste gas to sequentially pass through the washing tower, the drying and filtering box, the gas processor and the induced air system to process the waste gas, and an absorbent is used for removing dust in the waste gas, but the absorption method is only used for hardly and thoroughly removing harmful components in the VOCs industrial waste gas, and the absorbent for reaction is not reasonably disposed, so that secondary pollution is easily caused, and a plurality of waste water treatment processes are added, so that the treatment efficiency of the VOCs waste gas is low, and the treatment cost of the VOCs waste gas is increased; so that the technical solution is limited.
In view of the above, the invention injects diesel oil into the purification tower of the industrial waste gas of the VOCs as the absorbent, and treats the industrial waste gas of the VOCs by comprehensively using the absorption method and the burning method through the burning unit arranged on the second venturi tube on the side wall of the tower body, so that not only are harmful components in the industrial waste gas of the VOCs removed more thoroughly, but also the diesel oil absorbent is reasonably treated, thereby avoiding secondary pollution and greatly reducing the harm to the environment.
Disclosure of Invention
In order to make up the defects of the prior art and solve the problems that the conventional VOCs industrial waste gas treatment system has a single method and is difficult to completely remove harmful components in VOCs industrial waste gas, so that the discharged VOCs industrial waste gas has excessive residual harmful components and causes great harm to the environment, the invention provides the VOCs industrial waste gas treatment system.
The technical scheme adopted by the invention for solving the technical problems is as follows: a VOCs industrial waste gas treatment system comprises a VOCs industrial waste gas purification tower, a gas inlet pipe and a gas outlet pipe, wherein the VOCs industrial waste gas purification tower comprises a tower body and a tower top, the tower top is arranged at the top of the tower body, the gas inlet pipe is arranged at the position, close to the bottom, of the side wall of the tower body, and the center of the upper surface of the top of the gas outlet pipe tower is arranged; the tower body comprises a tower body and is characterized in that a first Venturi tube and a second Venturi tube are sequentially arranged on the side wall of the tower body from bottom to top, the first Venturi tube comprises a first contraction tube, a first throat tube and a first diffusion tube, the first contraction tube is positioned at the bottom of the first Venturi tube, and diesel oil is filled between the first contraction tube and the upper surface of the bottom of the tower body; the second Venturi tube comprises a second contraction tube, a second throat tube and a second diffusion tube, the second contraction tube is positioned at the bottom of the second Venturi tube, and the second contraction tube is connected with the first diffusion tube through a first tube; a group of combustion units are uniformly arranged on the side wall of the second throat pipe, and each combustion unit comprises a first cavity, a first guide pipe and an igniter; each first cavity is arranged on the side wall of the second choke, each first conduit is arranged on the side wall of the first cavity far away from the second choke, and the end part of each first conduit far away from the first cavity extends into diesel oil at the bottom of the tower body; the part of the side wall of the second choke, which is in contact with each first cavity, is provided with a first through hole, and each igniter is arranged at a part, close to the first through hole, in the first cavity; the VOCs industrial waste gas is introduced from the air inlet pipe, and harmful components in the VOCs industrial waste gas are thoroughly removed under the combined action of diesel oil, the second Venturi tube and the combustion unit, so that the pollution of the VOCs industrial waste gas to the environment is greatly reduced.
When the tower works, the VOCs industrial waste gas is introduced into the tower body through the air inlet pipe, the VOCs industrial waste gas entering the tower body is firstly in full contact with diesel oil at the bottom of the tower body, and according to the similarity and intermiscibility principle of organic matters, components which are the same as or similar to the diesel oil components in the VOCs industrial waste gas can be recovered, so that the concentration of the VOCs industrial waste gas is reduced; when the inflow VOCs industrial waste gas continues to increase, a part of VOCs industrial waste gas rises and passes through the first throat pipe, and according to the Venturi effect, the flow rate of the VOCs industrial waste gas passing through the first throat pipe is increased and the temperature of the VOCs industrial waste gas is reduced due to compression, so that a part of components in the VOCs industrial waste gas are liquefied by cooling and flow down along the outer surface of the first throat pipe, and the concentration of the rising VOCs industrial waste gas is further reduced; when the VOCs industrial waste gas with reduced concentration continuously rises and passes through the second throat pipe, negative pressure occurs in the first cavity arranged on the side wall of the second throat pipe due to the Venturi effect, and a part of diesel oil flows into the first cavity along the first guide pipe due to the negative pressure effect and is sprayed out from the first through hole of the first cavity because the first guide pipe is communicated with the diesel oil at the bottom of the tower body; meanwhile, an igniter is started to ignite the diesel oil sprayed out of the first chamber, so that the VOCs industrial waste gas flowing through the first throat pipe is subjected to incineration, and the concentration of the VOCs industrial waste gas is reduced through the action of the first venturi pipe, so that the incineration method is suitable for the VOCs industrial waste gas with lower concentration; therefore, the industrial waste gas of VOCs passing through the first throat is subjected to incineration, and harmful components contained in the industrial waste gas are basically removed; meanwhile, diesel oil which is used as an absorbent at the bottom of the tower body is consumed, so that secondary pollution possibly caused by recycling of the absorbent is avoided; therefore, through the cooperation of the combustion unit and the diesel oil absorbent, the absorption method and the combustion method are comprehensively used for removing harmful components in the VOCs industrial waste gas, the diesel oil serving as the absorbent is reasonably used for supplying energy to the combustion unit, and the secondary pollution is avoided while the equipment is simplified.
Preferably, the sponge is arranged on the inner surface of the side wall of the first tube, so that the concentration of the VOCs industrial waste gas flowing to the second venturi tube can be effectively reduced, and the second venturi tube can be ensured to thoroughly remove harmful components in the VOCs industrial waste gas; when the incinerator works, the incineration method is suitable for the VOCs industrial waste gas with low concentration, and the VOCs industrial waste gas with high concentration cannot completely remove harmful components in the VOCs industrial waste gas; therefore, the concentration of VOCs industrial waste gas flowing through the first pipe can be effectively reduced through the sponge arranged in the first pipe, and the combustion unit arranged in the second throat pipe can fully play a role.
Preferably, a water bag is arranged in the sponge, purified water is filled in the water bag, liquid outlet holes are uniformly formed in the outer surface of the water bag, the concentration of VOCs industrial waste gas flowing to the second Venturi tube can be further reduced through the cooperation of the water bag and the sponge, and the second Venturi tube can thoroughly remove harmful components in the industrial waste gas; when the device works, when the rising VOCs industrial waste gas impacts the sponge, the sponge starts to vibrate and deform, and the water bag arranged in the sponge is pressed due to the deformation of the sponge, so that the water bag sprays purified water through the liquid outlet holes arranged on the surface, the purified water sprayed out of the liquid outlet holes can act on the sponge to moisten the sponge, and the moistened sponge can further absorb the VOCs industrial waste gas flowing through the sponge, so that the concentration of the VOCs industrial waste gas is further reduced; and meanwhile, the wetted sponge can isolate waste residues with sparks generated by combustion in the first choke, so that diesel oil at the bottom of the tower body is prevented from being ignited, and the safety coefficient of reaction is improved.
Preferably, a partition plate is arranged at a position, close to the first conduit, inside the first chamber, and a group of through holes are uniformly formed in the surface of the partition plate; the partition plate can act on diesel sprayed from the first guide pipe, so that the flame sprayed from the first chamber is wider, and the VOCs industrial waste gas is removed more fully; when the device works, the diesel oil sprayed out of the first guide pipe due to the negative pressure of the first cavity is acted by the partition plate and the through holes on the surface of the partition plate, so that the diesel oil passing through the partition plate is in a foggy shape, the combustion range of the foggy diesel oil is larger when the foggy diesel oil is ignited, and the VOCs industrial waste gas flowing through the second throat pipe is more thoroughly burnt; meanwhile, the partition plate can play a certain role in protection, and flame is prevented from igniting diesel at the bottom of the tower body along with the sprayed diesel, so that the safety coefficient of the invention is improved.
Preferably, a fireproof plate is arranged on the surface of the partition plate, which is far away from the first guide pipe, the end part, which is close to the bottom of the first cavity, of the fireproof plate is rotatably connected with the partition plate, and the middle part of each fireproof plate is connected with the partition plate through a spring; the fire-proof plate can ensure that the dangerous condition of backfire explosion can not occur when the igniter ignites the diesel oil sprayed from the first application to burn the VOCs industrial waste gas, thereby improving the safety coefficient of the reaction; when the device works, the fireproof plate is under the action of negative pressure in the first chamber when the reaction starts, and the end part of the fireproof plate close to the bottom of the first chamber rotates, so that the spring deforms; meanwhile, the diesel oil sprayed out of the first conduit is not isolated by the fireproof plate any more, so that the diesel oil can be sprayed out of the through hole of the partition plate; after the reaction is finished, the negative pressure of the first cavity disappears, the fireproof plate returns to the original position along with the deformation recovery of the spring, the first partition plate is isolated from the second throat pipe, and the reaction residual sparks are prevented from entering the first guide pipe along the through hole of the first partition plate to cause the explosion of diesel oil at the bottom of the tower body, so that the safety coefficient of the invention is improved.
Preferably, the upper surface of the sponge is provided with a layer of asbestos plate, the upper surface of the asbestos plate is provided with a group of through holes, and the through holes can only pass gas due to smaller diameter; the asbestos plate can prevent sparks generated by burning VOCs industrial waste gas in the second throat pipe from falling into diesel oil at the bottom of the tower body to cause dangers such as explosion and the like; when the device works, VOCs industrial waste gas passing through the sponge can smoothly pass through a group of through holes formed in the upper surface of the asbestos plate, and residues generated by combustion reaction in the second throat pipe are blocked by the asbestos plate; the asbestos plate can play a role in heat insulation and fire prevention, so that the asbestos plate can play a role in heat insulation and prevention of moisture evaporation in the sponge on one hand, and can isolate residues with sparks falling in the second throat pipe on the other hand, so that diesel oil at the bottom of the tower body is prevented from being ignited, and the safety coefficient of the invention is improved.
Preferably, a steel rope is arranged on the lower surface of the sponge, the bottom end of the steel rope extends into diesel oil at the bottom of the tower body, and a stirring block is arranged at the bottom end of the steel rope; under the action that the sponge is impacted by VOCs industrial waste gas to vibrate, the steel rope drives the stirring block to act on the diesel at the bottom of the tower body, so that the phenomenon that the reaction efficiency is influenced by excessive VOCs industrial waste gas remained in the diesel is avoided; when the tower works, the sponge vibrates along with the impact of rising VOCs industrial waste gas, and the stirring block at the bottom of the tower body vibrates along with the sponge under the action of the steel rope; the stirring piece of vibration acts on the diesel oil of body of the tower bottom for release the VOCs industrial waste gas who remains in the diesel oil when the diesel oil vibrates, make the VOCs industrial waste gas that flows into the body of the tower purify more fully.
Preferably, the inner surface of the first venturi is provided with oil absorption paper, diesel oil components mixed in the VOCs industrial waste gas are removed through the action of the oil absorption paper, and harmful components in the industrial waste gas can be thoroughly removed through the second venturi; when the industrial waste gas treatment device works, the VOCs industrial waste gas flowing through the first throat pipe removes diesel oil components mixed with diesel oil components flowing through diesel oil due to the action of the oil absorption paper, and the concentration of the rising industrial waste gas containing VOCs is further reduced.
Preferably, the first Venturi tube and the second Venturi tube are made of high-temperature-resistant fireproof materials; during operation, because venturi and No. two venturis all adopt high temperature resistant fire-proof material, can avoid like this when the combustion unit at No. two throats acts on VOCs industrial waste gas, because of the high temperature makes a venturi and No. two venturi damage to the condition that leads to the reaction to be difficult to go on takes place.
Preferably, a detachable filter screen is arranged at the part, close to the air outlet pipe, of the second diffusion pipe, waste residues generated by combustion of the VOCs industrial waste gases are removed through the filter screen, and the waste residues generated by combustion of the VOCs industrial waste gases are prevented from polluting the environment; when the device works, the filter screen arranged at the part of the second diffusion tube close to the air outlet tube can remove waste residues generated after combustion of the VOCs industrial waste gas mixed in the purified VOCs industrial waste gas before the purified VOCs industrial waste gas flows out of the air outlet tube through the filtering effect; simultaneously because the filter screen is detachable, consequently can regularly take out the filter screen from VOCs industrial waste gas purification tower and wash, detach the adnexed residue in filter screen surface to this guarantees that the filter screen can normally function.
Preferably, the first through hole of the first chamber is conical, and one end of the first through hole with a larger cross section area is positioned on the inner surface of the second throat pipe; when the throat pipe works, the first through hole of the first cavity is conical, and the end with larger cross section area of the first through hole is positioned on the inner surface of the second throat pipe; therefore, when the flame sprayed out of the first chamber passes through the first through hole, the range of the sprayed flame is enlarged due to the change of the sectional area of the first through hole, and the industrial waste gas of the VOCs is combusted more fully.
The invention has the following beneficial effects:
1. according to the VOCs industrial waste gas treatment system, diesel oil is injected into a VOCs industrial waste gas purification tower in the VOCs industrial waste gas treatment system to serve as an absorbent, and the VOCs industrial waste gas is treated by comprehensively using an absorption method and a burning method through a combustion unit of a second Venturi tube arranged on the side wall of a tower body, so that harmful components in the VOCs industrial waste gas are removed more thoroughly, and the harm of the VOCs industrial waste gas to the environment is greatly reduced.
2. According to the VOCs industrial waste gas treatment system, the sponge and the asbestos paper are arranged on the inner surface of the first channel between the first Venturi tube and the second Venturi tube, and the water bag is arranged in the sponge, so that the concentration of VOCs industrial waste gas flowing to the second Venturi tube can be reduced, harmful components in the VOCs industrial waste gas can be thoroughly removed by the combustion unit, waste residues with sparks generated by combustion can be prevented from falling to the bottom of the tower body, the VOCs industrial waste gas purification tower is prevented from being exploded, and the safety coefficient of reaction is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
in the figure: the VOCs industrial waste gas purifying tower comprises a VOCs industrial waste gas purifying tower 1, a tower body 11, a first pipe 111, a sponge 112, a water bag 113, an asbestos plate 114, a steel rope 115, a stirring block 116, a filter screen 117, a tower top 12, a first venturi tube 13, a first contraction tube 131, a first throat tube 132, a first diffusion tube 133, oil absorption paper 134, a second venturi tube 14, a second contraction tube 141, a second throat tube 142, a second diffusion tube 143, a combustion unit 15, a first chamber 151, a first guide tube 152, an igniter 153, a first through hole 154, a partition plate 155, a fireproof plate 156, an air inlet pipe 2 and an air outlet pipe 3.
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 system for treating VOCs industrial waste gas according to the present invention comprises a VOCs industrial waste gas purification tower 1, a gas inlet pipe 2 and a gas outlet pipe 3, wherein the VOCs industrial waste gas purification tower 1 comprises a tower body 11 and a tower top 12, the tower top 12 is installed at the top of the tower body 11, the gas inlet pipe 2 is installed at a position on the side wall of the tower body 11 near the bottom, and the gas outlet pipe 3 is installed at a central position on the upper surface of the tower top 12; a first venturi tube 13 and a second venturi tube 14 are sequentially arranged on the side wall of the tower body 11 from bottom to top, the first venturi tube 13 comprises a first contraction tube 131, a first throat tube 132 and a first diffusion tube 133, the first contraction tube 131 is located at the bottom of the first venturi tube 13, and diesel oil is filled between the first contraction tube 131 and the upper surface of the bottom of the tower body 11; the second venturi tube 14 comprises a second contraction tube 141, a second throat tube 142 and a second diffusion tube 143, the second contraction tube 141 is positioned at the bottom of the second venturi tube 14, and the second contraction tube 141 is connected with the first diffusion tube 133 through a first tube 111; a group of combustion units 15 are uniformly arranged on the side wall of the second throat 142, and each combustion unit 15 comprises a first chamber 151, a first conduit 152 and an igniter 153; each first cavity 151 is arranged on the side wall of the second throat 142, each first conduit 152 is arranged on the side wall of the first cavity 151 far away from the second throat 142, and the end part of each first conduit 152 far away from the first cavity 151 extends into diesel oil at the bottom of the tower body 11; a first through hole 154 is formed in the contact part of the side wall of the second throat 142 and each first cavity 151, and each igniter 153 is arranged in the first cavity 151 close to the first through hole 154; the VOCs industrial waste gas is introduced from the gas inlet pipe 2, and the harmful components in the VOCs industrial waste gas are thoroughly removed under the combined action of the diesel oil, the second Venturi tube 14 and the combustion unit 15, so that the pollution of the VOCs industrial waste gas to the environment is greatly reduced.
When the device works, the VOCs industrial waste gas is introduced into the tower body 11 through the air inlet pipe 2, the VOCs industrial waste gas entering the tower body 11 is firstly in full contact with diesel oil at the bottom of the tower body 11, and according to the similarity and compatibility principle of organic matters, components which are the same as or similar to the diesel oil components in the VOCs industrial waste gas can be absorbed by the diesel oil, so that the concentration of the VOCs industrial waste gas is reduced; when the inflow VOCs industrial waste gas continues to increase, a part of the VOCs industrial waste gas rises and passes through the first throat pipe 132, according to the Venturi effect, the flow rate of the VOCs industrial waste gas passing through the first throat pipe 132 is increased and the temperature of the VOCs industrial waste gas is reduced due to compression, so that a part of components in the VOCs industrial waste gas are liquefied by cooling and flow down along the outer surface of the first throat pipe 132, and the concentration of the rising VOCs industrial waste gas is further reduced; when the industrial waste gas of the VOCs with reduced concentration continuously rises and passes through the second throat 142, negative pressure occurs in the first chamber 151 arranged on the side wall of the second throat 142 due to the venturi effect, and a part of diesel oil flows into the first chamber 151 along the first conduit 152 due to the negative pressure effect and is sprayed out from the first through hole 154 of the first chamber 151 because the first conduit 152 is communicated with the diesel oil at the bottom of the tower body 11; at this time, the igniter 153 is started to ignite the diesel oil sprayed out of the first chamber 151, so that the VOCs industrial waste gas flowing through the first throat 132 is subjected to incineration, and the concentration of the VOCs industrial waste gas at this time is reduced through the action of the first venturi tube 13, so that the incineration method is particularly suitable for the VOCs industrial waste gas with low concentration; therefore, the industrial waste gas of VOCs passing through the first throat 132 is subjected to incineration, and harmful components contained in the industrial waste gas are basically removed; simultaneously, diesel oil which is used as an absorbent at the bottom of the tower body 11 is also consumed, so that secondary pollution possibly caused by recycling the absorbent is avoided; therefore, through the cooperation of the combustion unit 15 and the diesel oil absorbent, the absorption method and the incineration method are comprehensively used for removing harmful components in the VOCs industrial waste gas, the diesel oil serving as the absorbent is reasonably used for supplying energy to the combustion unit 15, the equipment is simplified, and the secondary pollution is avoided.
As an embodiment of the present invention, the sponge 112 is disposed on the inner surface of the sidewall of the first tube 111, so that the concentration of the VOCs industrial waste gas flowing to the second venturi tube 14 can be effectively reduced, and the second venturi tube 14 can thoroughly remove harmful components in the VOCs industrial waste gas; when the incinerator works, the incineration method is suitable for the VOCs industrial waste gas with low concentration, and the VOCs industrial waste gas with high concentration cannot completely remove harmful components in the VOCs industrial waste gas; therefore, the adsorption effect of the sponge 112 arranged in the first pipe 111 can effectively reduce the concentration of the VOCs industrial waste gas flowing through the first pipe 111, and the combustion unit 15 arranged in the second throat 142 can be ensured to fully play a role.
As an embodiment of the invention, the sponge 112 is internally provided with the water bag 113, purified water is filled in the water bag 113, liquid outlet holes are uniformly formed in the outer surface of the water bag 113, the concentration of the VOCs industrial waste gas flowing to the second venturi tube 14 can be further reduced through the cooperation of the water bag 113 and the sponge 112, and the second venturi tube 14 can be ensured to thoroughly remove harmful components in the industrial waste gas; when the device works, when rising industrial waste gas containing VOCs impacts the sponge 112, the sponge 112 starts to vibrate and deform, and the water bag 113 arranged inside the sponge 112 is pressed due to the deformation of the sponge 112, so that the water bag 113 sprays purified water through the liquid outlet holes arranged on the surface, the purified water sprayed out of the liquid outlet holes can act on the sponge 112 to moisten the sponge 112, and the moistened sponge 112 can further absorb the industrial waste gas containing VOCs flowing through the sponge 112, so that the concentration of the industrial waste gas containing VOCs is further reduced; and simultaneously, the wetted sponge 112 can isolate waste residues with sparks generated by combustion in the first throat pipe 132, so that diesel oil at the bottom of the tower body 11 is prevented from being ignited, and the safety coefficient of reaction is improved.
As an embodiment of the present invention, a partition 155 is disposed inside the first chamber 151 and near the first conduit 152, and a set of through holes are uniformly disposed on the surface of the partition 155; the baffle 155 can act on diesel sprayed from the first guide pipe 152, so that the flame sprayed from the first chamber 151 is wider in range, and therefore industrial waste gas containing VOCs can be removed more fully; during operation, the diesel oil sprayed out of the first guide pipe 152 due to the negative pressure of the first chamber 151 is enabled to be in a foggy shape due to the action of the partition plate 155 and the through holes on the surface of the partition plate 155, the combustion range of the foggy diesel oil is larger when the foggy diesel oil is ignited, and the VOCs industrial waste gas flowing through the first throat pipe 132 is enabled to be more thoroughly burnt; meanwhile, the partition 155 can play a certain role in protection, so that flame is prevented from igniting diesel at the bottom of the tower body 11 along with the sprayed diesel, and the safety factor of the invention is improved.
In one embodiment of the present invention, the surface of the partition 155 away from the first conduit 152 is provided with fire-proof plates 156 in an up-and-down symmetrical manner, the fire-proof plates 156 are respectively rotatably connected with the top and bottom of the partition 155, and the opposite ends of the fire-proof plates 156 are in close contact, and the middle part of each fire-proof plate 156 is connected with the partition 155 through a spring; through the action of the fireproof plate 156, the danger of backfire explosion can be avoided while the igniter 153 ignites the diesel oil sprayed from the first chamber 151, and the safety coefficient of reaction is improved; during operation, when the reaction starts, the fire-proof plates 156 are subjected to the negative pressure effect in the first chamber 151, and the ends of the fire-proof plates 156, which are in contact with each other, start to rotate, so that the springs deform; meanwhile, the diesel oil sprayed out of the first conduit 152 is not isolated by the fireproof plate 156 any more, so that the diesel oil can be sprayed out of the through hole of the partition 155; after the reaction is finished, the negative pressure of the first chamber 151 disappears, and along with the recovery of the spring deformation, the fireproof plate 156 returns to the original position and the first partition plate 155 is isolated from the second throat pipe 142, so that the reaction residual sparks are prevented from entering the first guide pipe 152 along the through hole of the first partition plate 155, the explosion of diesel oil at the bottom of the tower body 11 is prevented, and the safety coefficient of the invention is improved.
As an embodiment of the present invention, a layer of asbestos plate 114 is disposed on the upper surface of the sponge 112, a group of through holes are disposed on the upper surface of the asbestos plate 114, and the through holes can only pass gas due to their small diameter; the asbestos plate 114 can prevent sparks generated by combustion of VOCs industrial waste gas in the second throat pipe 142 from falling into diesel oil at the bottom of the tower body 11, so that risks such as explosion are caused; when the device works, VOCs industrial waste gas passing through the sponge 112 can smoothly pass through a group of through holes formed in the upper surface of the asbestos plate 114, and residues generated by combustion reaction in the second hollow throat 142 are blocked by the asbestos plate 114; because the asbestos plate 114 can play a role in heat insulation and fire prevention, the asbestos plate 114 plays a role in preventing moisture in the sponge 112 from evaporating on one hand, and isolates residues with sparks falling from the second throat pipe 142 on the other hand, so that diesel oil at the bottom of the tower body 11 is prevented from being ignited, and the safety coefficient of the invention is improved.
As an embodiment of the present invention, a steel rope 115 is disposed on the lower surface of the sponge 112, the bottom end of the steel rope 115 extends into the diesel oil at the bottom of the tower body 11, and a stirring block 116 is disposed at the bottom end of the steel rope 115; under the action of vibration of the sponge 112 due to impact of VOCs industrial waste gas, the steel rope 115 drives the stirring block 116 to act on the diesel at the bottom of the tower body 11, so that the influence of excessive VOCs industrial waste gas remained in the diesel on the reaction efficiency is avoided; when the tower works, the sponge 112 vibrates along with the impact of rising VOCs industrial waste gas, and the stirring block 116 at the bottom of the tower body 11 vibrates along with the sponge 112 under the action of the steel rope 115; the vibrating stirring block 116 acts on the diesel at the bottom of the tower body 11, so that the diesel vibrates and simultaneously releases the VOCs industrial waste gas remained in the diesel, and the VOCs industrial waste gas flowing into the tower body 11 is purified more fully.
As an embodiment of the invention, the inner surface of the first throat 132 is provided with an oil absorption paper 134, and diesel oil components mixed in the VOCs industrial waste gas are removed through the action of the oil absorption paper 134, so that the second venturi tube 14 is ensured to be capable of completely removing harmful components in the industrial waste gas; in operation, the industrial waste gas containing VOCs flowing through the first throat 132 is removed from diesel fuel with diesel fuel components mixed therein by the oil absorption paper 134, and the rising concentration of industrial waste gas containing VOCs is further reduced.
As an embodiment of the present invention, the first venturi tube 13 and the second venturi tube 14 both use a high temperature resistant and fireproof material; in operation, because venturi 13 and No. two venturi 14 all adopt high temperature resistant fire prevention material, can avoid like this when the combustion unit 15 at No. two venturi 142 acts on VOCs industrial waste gas, because of the high temperature makes venturi 13 or No. two venturi 14 take place to damage to the condition that leads to the reaction to be difficult to go on takes place.
As an embodiment of the present invention, a detachable filter screen 117 is disposed at a portion of the second diffusion pipe 143 close to the outlet pipe 3, and waste residues generated by combustion of the VOCs industrial waste gases are removed by the filter screen 117, so as to prevent the waste residues generated by combustion of the VOCs industrial waste gases from polluting the environment; when the device works, the filter screen 117 arranged at the part of the second diffusion pipe 143 close to the outlet pipe 3 can remove waste residues generated after combustion of the VOCs industrial waste gas mixed in the purified VOCs industrial waste gas through the filtering action before the purified VOCs industrial waste gas flows out of the outlet pipe 3; meanwhile, the filter screen 117 is detachable, so that the filter screen can be taken out of the VOCs industrial waste gas purification tower 1 at regular time for cleaning, and residues attached to the surface of the filter screen 117 are removed, so that the filter screen 117 can normally function.
In an embodiment of the present invention, the first through hole 154 is tapered, and one end of the first through hole 154 having a larger cross-sectional area is located on the inner surface of the second throat 142. During operation, the first through hole 154 is conical, and the end of the first through hole 154 with a larger cross section area is located on the inner surface of the second throat 142; therefore, when the flame sprayed from the first chamber 151 passes through the first through hole 154, the range of the sprayed flame is enlarged due to the change of the cross-sectional area of the first through hole 154, so that the industrial waste gas of VOCs is combusted more sufficiently.
When the device works, the VOCs industrial waste gas is introduced into the tower body 11 through the air inlet pipe 2, the VOCs industrial waste gas entering the tower body 11 is fully contacted with diesel oil at the bottom of the tower body 11, and according to the similarity and compatibility principle of organic matters, components which are the same as or similar to the diesel oil components in the VOCs industrial waste gas can be absorbed by the diesel oil, so that the concentration of the VOCs industrial waste gas is reduced; when the inflow VOCs industrial waste gas continues to increase, a part of the VOCs industrial waste gas rises and passes through the first throat 132, and when the VOCs industrial waste gas passes through the first throat 132, according to the Venturi effect, the VOCs industrial waste gas passing through the first throat 132 is compressed to cause the flow velocity to become fast and the temperature to be reduced, so that a part of components in the VOCs industrial waste gas are cooled and liquefied and flow down along the outer surface of the first throat 132, and the concentration of the rising VOCs industrial waste gas is further reduced; the VOCs industrial waste gas continuously rises and passes through the sponge 112 arranged in the first pipe 111, and the concentration of the VOCs industrial waste gas flowing through the first pipe 111 can be effectively reduced through the action of the sponge 112 and the water bag 113 arranged inside the sponge 112; meanwhile, as the sponge 112 is vibrated by the impact of the ascending VOCs industrial waste gas, the stirring block 116 positioned at the bottom of the tower body 11 is vibrated together with the sponge 112 due to the action of the steel rope 115; the vibrating stirring block 116 acts on the diesel at the bottom of the tower body 11, so that the diesel vibrates and simultaneously releases the VOCs industrial waste gas remained in the diesel, and the VOCs industrial waste gas flowing into the tower body 11 is purified more fully; when the concentration-reduced VOCs industrial waste gas continuously rises and passes through the second throat pipe 142, negative pressure occurs in the first chamber 151 arranged on the side wall of the second throat pipe 142 due to a venturi effect, and because the first conduit 152 is communicated with diesel at the bottom of the tower body 11, a part of diesel flows into the first chamber 151 along the first conduit 152 due to the negative pressure and is sprayed out from the first through hole 154 of the first chamber 151, meanwhile, due to the action of the partition 155 and the through holes on the surface of the partition 155, the diesel passing through the partition 155 is atomized, at the moment, the igniter 153 is started, the atomized diesel sprayed out from the first chamber 151 is ignited, so that the VOCs industrial waste gas flowing into the first throat pipe 132 is fully subjected to an incineration effect, and the concentration of the VOCs industrial waste gas at the moment is reduced through the action of the first venturi pipe 13, and the incineration method is suitable for the VOCs industrial waste gas with lower incineration concentration; therefore, the VOCs industrial waste gas passing through the first throat pipe 132 is subjected to incineration, so that harmful components contained in the industrial waste gas are basically removed, and the pollution to the environment is greatly reduced; meanwhile, diesel oil which is used as an absorbent at the bottom of the tower body 11 is consumed, so that secondary pollution possibly caused by recycling of the absorbent is avoided; therefore, through the matching of the combustion unit 15 and the diesel oil absorbent, the absorption method and the burning method are comprehensively used for removing harmful components in the VOCs industrial waste gas, the diesel oil serving as the absorbent is reasonably used for supplying energy to the combustion unit 15, and the secondary pollution is avoided while the equipment is simplified; in addition, the asbestos plate 114 arranged on the upper surface of the sponge 112 and the fireproof plate 156 arranged on the surface of the partition plate 155 far away from the first conduit 152 can effectively isolate the flame in the second throat 142, prevent the diesel at the bottom of the tower body 11 from being ignited, and improve the safety factor of the invention.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
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 (11)
1. The utility model provides a VOCs industrial waste gas treatment system which characterized in that: the system comprises a VOCs industrial waste gas purification tower (1), an air inlet pipe (2) and an air outlet pipe (3), wherein the VOCs industrial waste gas purification tower (1) comprises a tower body (11) and a tower top (12), and the tower top (12) is arranged at the top of the tower body (11); the gas inlet pipe (2) is arranged at the position, close to the bottom, of the side wall of the tower body (11), and the gas outlet pipe (3) is arranged at the central position of the upper surface of the tower top (12); the tower body (11) is characterized in that a first Venturi tube (13) and a second Venturi tube (14) are sequentially arranged on the side wall of the tower body (11) from bottom to top, the first Venturi tube (13) comprises a first contraction tube (131), a first throat tube (132) and a first diffusion tube (133), the first contraction tube (131) is located at the bottom of the first Venturi tube (13), and diesel oil is filled between the first contraction tube (131) and the upper surface of the bottom of the tower body (11); the second Venturi tube (14) comprises a second contraction tube (141), a second throat tube (142) and a second diffusion tube (143), the second contraction tube (141) is positioned at the bottom of the second Venturi tube (14), and the second contraction tube (141) is connected with the first diffusion tube (133) through a first tube (111); a group of combustion units (15) are uniformly arranged on the side wall of the second throat pipe (142), and each combustion unit (15) comprises a first chamber (151), a first guide pipe (152) and an igniter (153); each first cavity (151) is arranged on the side wall of the second throat (142), each first conduit (152) is arranged on the side wall, away from the second throat (142), of the first cavity (151), and the end, away from the first cavity (151), of each first conduit (152) extends into diesel oil at the bottom of the tower body (11); a first through hole (154) is formed in the contact part of the side wall of the second throat pipe (142) and each first cavity (151), and each igniter (153) is arranged in the first cavity (151) and close to the first through hole (154); VOCs industrial waste gas is introduced from the gas inlet pipe (2), and harmful components in the VOCs industrial waste gas are thoroughly removed under the combined action of diesel oil, the second Venturi tube (14) and the combustion unit (15), so that the pollution of the VOCs industrial waste gas to the environment is greatly reduced.
2. A system for treating industrial waste gases containing VOCs according to claim 1, wherein: a pipe (111) lateral wall internal surface is provided with sponge (112), and sponge (112) can effectively reduce the concentration of the VOCs industrial waste gas that flows to No. two venturi tubes (14), have guaranteed that No. two venturi tubes (14) can be comparatively thorough detach the harmful component in the industrial waste gas.
3. A system according to claim 2, wherein the system further comprises: sponge (112) inside is equipped with water bag (113), water bag (113) inside packing has the pure water, water bag (113) surface evenly is equipped with out the liquid hole, and the concentration that can further reduce the VOCs industrial waste gas of flow direction No. two venturi tube (14) through the mating reaction of water bag (113) and sponge (112), has guaranteed that No. two venturi tube (14) can be comparatively thorough harmful component in the detached industrial waste gas.
4. A system for treating industrial waste gases containing VOCs according to claim 3, wherein: a partition plate (155) is arranged at a position, close to the first guide pipe (152), in the first cavity (151), and a group of through holes are uniformly formed in the surface of the partition plate (155); the baffle (155) can act on the diesel sprayed from the first guide pipe (152), so that the flame sprayed from the first chamber (151) is wider, and harmful components in the industrial waste gas of the VOCs can be removed more fully.
5. A VOCs industrial waste gas treatment system according to claim 4, wherein: the surface of the partition plate (155) far away from the first guide pipe (152) is symmetrically provided with fire prevention plates (156) from top to bottom, the fire prevention plates (156) are respectively connected with the top and the bottom of the partition plate (155) in a rotating mode, opposite ends of the fire prevention plates (156) are in close contact, and the middle part of each fire prevention plate (156) is connected with the partition plate (155) through a spring; through the effect of PLASTIC LAMINATED (156), can guarantee that some firearm (153) can not take place the dangerous condition of tempering explosion when lighting the diesel oil burning VOCs industrial waste gas that spouts from cavity (151), improved the factor of safety of reaction.
6. A VOCs industrial waste gas treatment system according to claim 5, wherein: a layer of asbestos plate (114) is arranged on the upper surface of the sponge (112), a group of through holes are formed in the upper surface of the asbestos plate (114), and the through holes can only allow air to pass through due to small diameter; the asbestos plate (114) can prevent sparks generated by burning VOCs industrial waste gas in the second throat pipe (142) from falling into diesel oil at the bottom of the tower body (11) to cause dangers such as explosion, and the safety coefficient of the reaction is improved.
7. A VOCs industrial waste gas treatment system according to claim 6, wherein: a steel rope (115) is arranged on the lower surface of the sponge (112), the bottom end of the steel rope (115) extends into diesel oil at the bottom of the tower body (11), and a stirring block (116) is arranged at the bottom end of the steel rope (115); receive VOCs industrial waste gas through sponge (112) and strike and the effect of vibration, steel cable (115) drive stirring piece (116) act on the diesel oil of tower body (11) bottom, avoid remaining in the diesel oil VOCs industrial waste gas too much and influenced the efficiency of reaction.
8. A system according to claim 7 for treating industrial waste gases containing VOCs, wherein: the inner surface of the first throat pipe (132) is provided with oil absorption paper (134), diesel oil components mixed in the VOCs industrial waste gas are removed under the action of the oil absorption paper (134), and harmful components in the VOCs industrial waste gas can be thoroughly removed by the second Venturi pipe (14).
9. A system for treating industrial waste gases containing VOCs according to claim 8, wherein: the first Venturi tube (13) and the second Venturi tube (14) are made of high-temperature-resistant fireproof materials.
10. A system for treating industrial waste gases containing VOCs according to claim 9, wherein: the part that No. two diffuser pipes (143) are close to outlet duct (3) is equipped with detachable filter screen (117), gets rid of the waste residue that VOCs industrial waste gas burns and produce through filter screen (117) effect, prevents the waste residue polluted environment that VOCs industrial waste gas burns and produces.
11. A system for treating industrial waste gases containing VOCs according to claim 10, wherein: the first through hole (154) is conical, and one end of the first through hole (154) with a larger cross section area is positioned on the inner surface of the second throat pipe (142).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948825.1A CN112221308A (en) | 2020-09-10 | 2020-09-10 | VOCs industrial waste gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948825.1A CN112221308A (en) | 2020-09-10 | 2020-09-10 | VOCs industrial waste gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112221308A true CN112221308A (en) | 2021-01-15 |
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ID=74115599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010948825.1A Withdrawn CN112221308A (en) | 2020-09-10 | 2020-09-10 | VOCs industrial waste gas treatment system |
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| Country | Link |
|---|---|
| CN (1) | CN112221308A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237999A (en) * | 2021-04-18 | 2021-08-10 | 鲁文英 | Voc online monitoring system and monitoring method thereof |
| CN113262555A (en) * | 2021-05-18 | 2021-08-17 | 付晓钟 | Energy-saving chemical light-weight removing tower |
| CN116785883A (en) * | 2023-06-27 | 2023-09-22 | 国网江苏省电力有限公司南通供电分公司 | Safety anti-leakage monitoring control cabinet and operation method thereof |
-
2020
- 2020-09-10 CN CN202010948825.1A patent/CN112221308A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237999A (en) * | 2021-04-18 | 2021-08-10 | 鲁文英 | Voc online monitoring system and monitoring method thereof |
| CN113262555A (en) * | 2021-05-18 | 2021-08-17 | 付晓钟 | Energy-saving chemical light-weight removing tower |
| CN116785883A (en) * | 2023-06-27 | 2023-09-22 | 国网江苏省电力有限公司南通供电分公司 | Safety anti-leakage monitoring control cabinet and operation method thereof |
| CN116785883B (en) * | 2023-06-27 | 2024-03-26 | 国网江苏省电力有限公司南通供电分公司 | Safety anti-leakage monitoring control cabinet and operation method thereof |
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Application publication date: 20210115 |
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