CN110604987A - Waste gas purification device and method for refining workshop in oil processing industry - Google Patents
Waste gas purification device and method for refining workshop in oil processing industry Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/52—Hydrogen sulfide
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- B01D53/34—Chemical or biological purification of waste gases
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- 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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- 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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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
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- B01D2257/306—Organic sulfur compounds, e.g. mercaptans
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2259/804—UV light
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Abstract
The invention discloses a waste gas purification device for a refining workshop in the grease processing industry, which comprises a plurality of connecting pipes, an integrated device, a gas distribution device and an odor controller, wherein the integrated device, the gas distribution device and the odor controller are sequentially communicated through the connecting pipes, the integrated device internally comprises a primary spraying structure, a secondary spraying structure and a composite photocatalytic structure, waste gas enters the integrated device from the connecting pipes, then is sequentially washed by the primary spraying structure and the secondary spraying structure, and the washed waste gas is dehydrated, enters the composite photocatalytic structure to decompose organic matters and then enters the gas distribution device and the odor controller to be thoroughly deodorized. The waste gas purification device for the refining workshop in the grease processing industry has good waste gas purification effect on large air volume, medium and low concentration, high temperature and large amount of protein-containing dust, and the waste gas monitoring concentration is far lower than the environmental protection emission standard. The invention also relates to a method for purifying the waste gas of the refining workshop in the oil processing industry.
Description
Technical Field
The invention relates to waste gas purification, in particular to a waste gas purification device for a refining workshop in the grease processing industry.
Background
The waste gas pollution factors of the refining workshop in the oil processing industry are pollutants such as industrial dust, oil, malodorous gas and the like; and contains volatile organic compounds such as unsaturated aliphatic hydrocarbons, sesamol, methyl mercaptan, etc. The emission intensity of flue gas pollution is high, the emission amount of waste gas is large, the pollution components are complex and changeable, particularly, the offensive odor components in the waste gas easily cause great pollution to the surrounding environment and the plant area environment, and the phenomenon of disturbing residents is difficult to avoid.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the waste gas purification device for the refining workshop in the grease processing industry, which can aim at the characteristics of waste gas diversity, variability, high pollution concentration, large treatment capacity and the like.
The purpose of the invention is realized by adopting the following technical scheme:
the utility model provides a grease processing trade refining workshop exhaust gas purification device, includes a plurality of connecting pipes, integration equipment, gas distribution device and peculiar smell controller, integration equipment the gas distribution device reaches the peculiar smell controller passes through the connecting pipe communicates in proper order, integration equipment is inside to spray structure, second grade including the one-level and to spray structure and compound photo-catalytic structure, and waste gas follows the connecting pipe gets into in proper order behind the integration equipment the one-level sprays the structure and the second grade sprays the structure and washes, and the waste gas dehydration after the washing gets into compound photo-catalytic structure decomposes and gets into again behind the organic matter the gas distribution device reaches the thorough deodorization of peculiar smell controller.
Furthermore, the primary spraying structure comprises a cross-flow washing tank, a packed bed positioned in the cross-flow washing tank, a spraying structure positioned at the top of the packed bed and a circulating water tank, wherein in the cross-flow washing tank, waste gas is purified after horizontally passing through one or more packed beds, the packed bed is cleaned from the top, and cleaning liquid is sprayed on the top of the packed bed and enters the circulating water tank after flowing through the packed bed.
Further, NaOH solution or lime water is added into the circulating water tank.
Furthermore, the secondary spraying structure comprises a cross-flow washing tank, a packed bed positioned in the cross-flow washing tank, a spraying structure positioned at the top of the packed bed and a circulating water tank, wherein in the cross-flow washing tank, waste gas is purified after horizontally passing through one or more packed beds, the packed bed is cleaned from the top, and cleaning liquid is sprayed on the top of the packed bed and enters the circulating water tank after flowing through the packed bed.
Furthermore, NEW BIO-C deodorant liquid is added into the circulating water tank.
Further, the composite photocatalytic structure comprises a pretreatment section, the pretreatment section comprises a plurality of modularized composite fibers, and the composite fibers adsorb harmful chemical gases in waste gases.
Further, the composite photocatalytic structure comprises a composite photocatalytic section, the composite photocatalytic section comprises a high-energy ultraviolet lamp, and waste gas is irradiated by a high-energy ultraviolet lamp beam to decompose organic matters.
Further, the ultraviolet wavelength of the high-energy ultraviolet lamp is 182nm, 254nm or 365 nm.
Further, the gas distribution device distributes gas to the peculiar smell controller, the peculiar smell controller comprises a deodorization diaphragm, deodorization particles are uniformly distributed on the surface of the deodorization diaphragm, the deodorization microparticles can rapidly and actively capture odor gas molecules in the air and wrap the odor particles to generate non-covalent combination, and sedimentation is generated due to the increase of specific gravity after combination.
A method for purifying waste gas of a refining workshop in the oil processing industry comprises the following steps:
washing with alkali liquor: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas is purified after horizontally passing through one or more packing beds, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing, the cleaning liquid flows through the packing and enters a circulating water tank, NaOH solution or lime water is added into the circulating water tank, and substances such as NH3, H2S, thiol and fatty acid which is difficult to decompose are removed;
and (3) washing with odor liquid: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas horizontally passes through one or more packing beds to be purified, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing and flows through the packing to enter a circulating water tank, and NEW BIO-C deodorizing liquid or hydrogen peroxide is added into the circulating water tank, so that various pollutants in the waste gas can be effectively removed;
and (3) dehydration treatment: when the gas with mist rises and passes through the spraying washing layer, the mist collides with the chemical washing layer and is attached to the surface of the chemical washing layer due to the inertia effect of rising mist, and the liquid drops are separated from the chemical washing layer and fall down until the gathered liquid drops are large enough that the gravity generated by the liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid;
performing composite photocatalysis: decomposing organic matters in the waste gas under the irradiation of a lamp of a high-energy ultraviolet lamp beam;
gas distribution and deodorization: deodorizing particles are uniformly distributed on the surface of the deodorizing membrane, deodorizing microparticles can quickly and actively capture odorous gas molecules in the air, the odorous particles are wrapped to generate non-covalent bonding, and sedimentation is generated due to the increase of specific gravity after bonding;
discharging: the height of the flue is increased by more than 15 meters through a chimney for discharging.
Compared with the prior art, the waste gas purification device for the refining workshop in the oil processing industry has the advantages that the treatment process is selected in a targeted manner for the characteristics of waste gas diversity, variability, high pollution concentration, large treatment air volume and the like of the refining workshop in the oil processing industry, so that the waste gas can be discharged after reaching the standard.
1. The waste gas purification device for the refining workshop in the grease processing industry is convenient to install and occupies small area on site;
2. the operation process of the waste gas purification device of the refining workshop in the grease processing industry is safe, stable and reliable, and the operation and the maintenance are convenient;
3. the multiple treatment processes are combined into integrated equipment, and the borne waste gas concentration and component load are large;
4. the targeted selection treatment process for the components of the waste gas can better control the operation and maintenance cost of the system;
5. the equipment is made of stainless steel, so that the appearance and the service life of the system are guaranteed to the maximum extent;
6. the tail end of the waste gas treatment system is designed with a dry neutralization method (industrial deodorization membrane), which not only ensures the cost index of the discharged waste gas, but also can effectively control the odor concentration of the discharge outlet.
Drawings
FIG. 1 is a perspective view of a waste gas purification device of a refining workshop in the grease processing industry according to the present invention;
FIG. 2 is a flow chart of the method for purifying the waste gas of the refining workshop in the oil and fat processing industry.
In the figure: 10. an integration device; 20. a gas distribution device; 30. a odor controller; 40. a medium-low pressure centrifugal fan; 50. and (4) a chimney.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, the device for purifying waste gas of a refinery workshop in the oil processing industry of the present invention includes an integrated device 10, a gas distribution device 20, a odor controller 30, a middle and low pressure centrifugal fan 40, a chimney 50, and a plurality of connecting pipes. The integrated equipment 10, the gas distribution device 20, the odor controller 30, the medium-low pressure centrifugal fan 40 and the chimney 50 are sequentially communicated through connecting pipes.
The integrated equipment 10 comprises a primary spraying structure, a secondary spraying structure and a composite photocatalytic structure.
The primary spray structure includes a multi-stage cross-flow scrubbing tank in which the gas is purified after passing horizontally through one or more packed beds. The filler is cleaned from the top, and the cleaning liquid is sprayed on the top of the filler and flows into the circulating water tank after flowing through the filler. Adding NaOH solution or lime water into circulating water tank to remove NH3、H2S, thiol compounds, and hardly decomposable fatty acids.
When NaOH solution is used as a detergent, hydrogen sulfide and ammonia gas have good removal effect. Both substances are soluble in water and can react. The hydrosulfuric acid is weak acid, and is ionized in water in a grading way, and the hydrosulfuric acid is an aqueous solution of hydrogen sulfide gas, is a mixture and is volatile binary weak acid; ammonia is very soluble in aqueous solutions. The relevant reaction formula is as follows:
H2S+H2O＝HS-+H3O+
HS-+H2O＝S2-+H3O+
NH3+H2O＝NH3·H2O
the NaOH solution has a good treatment effect on hydrogen sulfide, and the reaction formula is as follows:
H2S+2NaOH＝Na2S+H2O(H2s quantity)
H2S+NaOH＝NaHS+H2O(H2S excess)
The secondary spray structure comprises a multi-stage cross-flow scrubbing tank in which the gas is purified after passing horizontally through one or more packed beds. The filler is cleaned from the top, and the cleaning liquid is sprayed on the top of the filler and flows into the circulating water tank after flowing through the filler. NEW BIO-C deodorizing liquid or hydrogen peroxide is added into the circulating water tank, so that various pollutants in the waste gas can be effectively removed.
The NEW BIO-C deodorizing liquid contains deodorizing particles, and the surfaces of the deodorizing particles can not only effectively adsorb peculiar smell molecules in the air, but also promote the change of the spatial configuration of the adsorbed peculiar smell molecules. The deodorizing particles can provide electrons for odor molecules to accelerate the reaction with the odor molecules; the surface energy can adsorb odor molecules in the air, and the three-dimensional structure in the odor molecules is changed and becomes unstable; meanwhile, odor molecules adsorbed on the surfaces of the deodorizing particles can also react with oxygen in the air. The detailed process is as follows:
acid-base reaction, for example, the deodorized particles contain trace alkaloid which can react with acidic odor molecules such as hydrogen sulfide. Unlike typical acid-base reactions, typical bases are toxic, inedible, and not biodegradable. The high-purity plant extract can be biodegraded and is nontoxic.
Catalytic oxidation reactions, such as hydrogen sulfide and other acidic gases, typically do not react with oxygen in the air. But can react with oxygen in the air under the catalysis of the plant extract. Taking the reaction of hydrogen sulfide as an example:
R-NH2+H2S→R-NH3++SH-
R-NH2+SH-+O2+H2O→R-NH3+SO4 2-+OH-
R-NH3++OH-→R-NH2+H2O
redox reactions, such as formaldehyde, are oxidative and available molecules in the vegetation liquor are reductive. They can be reacted directly. Reaction with formaldehyde and ammonia:
HR-NH2+HCHO→R-HN2+H-C＝CO2+H2O
R-NH2+NH3→R-NH2+N2+H2O
the composite photocatalysis structure is divided into an efficient pretreatment section and a composite photocatalysis section which are usually integrated, so that the occupied area and the installation workload can be effectively reduced. The high-efficiency pretreatment section is mainly formed by combining modularized professional composite fibers and mainly used for treating each component of waste gas so as to adsorb and remove harmful chemical gas in the waste gas, reduce the pressure of rear-end treatment and improve the waste gas treatment efficiency.
Ultraviolet lamp with specific wavelength is used as light energy donor for photocatalytic oxidation, and the photocatalyst nano particle can be excited to generate electron-hole pair and hole decomposing catalyst under the irradiation of ultraviolet light with certain wavelength. TiO22The photocatalytic oxidation is active hydroxyl (OH) and other active oxidation species (O)2-，·OOH，H2O2) The result of the combined action. In TiO2The OH group generated on the surface has high reactivity and reaction energy higher than that of various chemical bond energies in organic matters, and is added with O2 -，·OOH，H2O2The synergistic effect of the active oxidation substances can quickly and effectively decompose the organic substances.
The rough reaction mechanism is:
H2S+O2、O2-、O2+→SO3+H2O
NH3+O2、O2-、O2+→NOx+H2O
VOCs+O2、O2-、O2+→SO3+CO2+H2O
the ultraviolet wavelength of the high-energy ultraviolet lamp is 182nm, 254nm or 365 nm.
The gas distribution device 20 distributes gas to the odor controller 30, the Vaportek odor controller 30 is a core device, and the Vaportek deodorization membrane is a main deodorization unit. Odor removing particles are uniformly distributed on the surface of the membrane through VP, and the odor is rapidly removed by utilizing the air convection power, and meanwhile, other external substances cannot be sucked, so that the naturalness of the plant extracting solution is kept forever. The deodorizing particles in the waste gas can quickly and actively capture the odor gas molecules in the air and wrap the odor particles. The common odor molecules are mostly small molecular organic matters (esters, alcohols, aromatic hydrocarbons and the like), and also comprise part of inorganic small molecules such as ozone, ammonia, hydrogen sulfide, hydrocarbons and the like, and the odor molecules have high activity on the surface of olfactory cells and strong irritation, and still have strong olfactory pollution capacity even under the premise that the concentration of each odor component reaches the standard and is discharged, namely the odor molecules have the characteristics of low pollution concentration and high odor intensity. Vaportek particles are natural oily deodorized molecules, and the particles are in non-covalent combination with odor molecules through intermolecular nonpolar interaction, so that the molecules are greatly stabilized, and the activity and the irritation of the molecules are reduced. Further, the increase in specific gravity after the binding is solved by the sedimentation effect. The process is different from chemical reaction process to generate a third substance and masking effect, does not cause secondary pollution, and can thoroughly remove odor.
When the waste gas purification device of the refining workshop in the oil processing industry is used, the collected waste gas is sent to a first-stage spraying structure (also called an alkali liquor washing device) of the integrated equipment 10 for treatment under the action of a suction port, a conveying air pipe and a fan, and the circulating liquid of the treatment is NaOH alkali liquor or lime water. The treatment system removes particulate matters, dust, grease and smoke dust in the waste gas; and can remove hydrogen sulfide, acidic waste gas and components which are easy to dissolve in aqueous solution.
The waste gas from the lye washing device is sent to a secondary spraying structure (also called as a deodorization liquid washing device) of the integrated equipment 10 for further treatment. Adding small amount of absorbent (New Bio-C plant extract) into the spray circulation solution. The odorous gas is fully contacted with the New Bio-C plant extract, and the odorous particles in the air or in the water are absorbed and removed by the New Bio-C plant extract. The treatment system can treat part of water-soluble components and biodegradable components in the waste gas, and can effectively reduce the concentration of peculiar smell.
The flue gas after two-stage spraying and washing belongs to a gas-liquid mixing state, and most of water vapor in the gas needs to be removed through treatment of a high-efficiency dehydration and dehumidification layer in order to avoid influencing the next treatment working section. When the mist-laden gas rises through the spray scrubbing layer at a certain speed, the mist collides with the chemical scrubbing layer and is attached to the surface of the chemical scrubbing layer due to the inertia effect of the rising mist. The dispersion of the mist on the surface of the chemical cleaning layer and the gravity sedimentation of the mist enable the mist to form larger liquid drops which flow to the junction of the two filaments along the chemical cleaning layer. The wettability of the chemical washing layer, the surface tension of the liquid and the capillary action of the chemical washing layer enable the liquid drops to be larger and larger, and the liquid drops are separated from the chemical washing layer and fall down until the gathered liquid drops are large enough that the gravity generated by the liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid. The gas is substantially free of entrainment after passing through the chemical scrubbing unit.
The mist in the gas is separated to improve the operation condition, optimize the process index, reduce the corrosion of the equipment, prolong the service life of the equipment, increase the treatment capacity, recover valuable materials, protect the environment, reduce the atmospheric pollution and the like.
The structure is simple, the volume is small, the efficiency of dust removal and dehydration is high, the resistance is small, the weight is light, the installation, the operation and the maintenance are convenient, and the collection efficiency of the chemical washing device reaches 98 to 99.8 percent for the mist with the particle size of more than or equal to 3 to 5 um. (the main function is to intercept floccules in the gas and remove most of water vapor in the gas)
The photocatalytic oxidation of the dehydrated exhaust gas to form TiO2 under the lamp irradiation of the high-energy ultraviolet lamp beam is the result of the combined action of active hydroxyl groups (. OH) and other active oxidizing species (. O2-,. OOH, H2O 2). OH groups generated on the surface of TiO2 have high reactivity and higher reaction energy than various chemical bond energies in organic matters, and can quickly and effectively decompose the organic matters by the synergistic effect of O2-,. OOH and H2O2 active oxidation substances. (main function: removing easily decomposed and oxidized exhaust gas components (benzene, toluene, xylene, non-methane total hydrocarbons, VOCs, etc. and having good disinfection and deodorization effects) in a part of the exhaust gas;
the odor gas pretreated by the previous stages still has the biggest odor pollution problem. At this time, the Vaportek odor controller 30 is adopted, and a medium-low pressure centrifugal fan 40 is used for blowing air (realizing variable frequency control), so that the deodorizing microparticles in the odor controller 30 are taken away, odor gas molecules in the air are rapidly and actively captured, and the odor particles are wrapped. Vaportek particles are natural oily deodorizing molecules, and the particles are in non-covalent combination with odor molecules through intermolecular nonpolar interaction, so that the molecules are greatly stabilized, the activity and the irritation of the molecules are reduced, and the odor is thoroughly removed. (main function: removal of malodors in exhaust gas to the point of emission).
The treated waste gas reaching the standard is led to be higher by more than 15 meters through a chimney 50 and is discharged.
The invention also relates to a method for purifying the waste gas of the refining workshop in the grease processing industry, which comprises the following steps:
washing with alkali liquor: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas is purified after horizontally passing through one or more packing beds, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing, the cleaning liquid flows through the packing and enters a circulating water tank, NaOH solution or lime water is added into the circulating water tank, and substances such as NH3, H2S, thiol and fatty acid which is difficult to decompose are removed;
and (3) washing with odor liquid: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas horizontally passes through one or more packing beds to be purified, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing and flows through the packing to enter a circulating water tank, and NEW BIO-C deodorizing liquid or hydrogen peroxide is added into the circulating water tank, so that various pollutants in the waste gas can be effectively removed;
and (3) dehydration treatment: when the gas with mist rises through the spraying washing layer at a certain speed, the mist collides with the chemical washing layer and is attached to the surface of the chemical washing layer due to the inertia effect of rising mist, and the liquid drops are separated from the chemical washing layer and fall down until the gathered liquid drops are large enough that the gravity generated by the liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid;
performing composite photocatalysis: decomposing organic matters in the waste gas under the irradiation of a lamp of a high-energy ultraviolet lamp beam;
gas distribution and deodorization: deodorizing particles are uniformly distributed on the surface of the deodorizing membrane, deodorizing microparticles can quickly and actively capture odorous gas molecules in the air, the odorous particles are wrapped to generate non-covalent bonding, and sedimentation is generated due to the increase of specific gravity after bonding;
discharging: the height is increased by more than 15 meters through a chimney 50 for discharging.
Compared with the prior art, the waste gas purification device for the refining workshop in the oil processing industry has the advantages that the treatment process is selected in a targeted manner for the characteristics of waste gas diversity, variability, high pollution concentration, large treatment air volume and the like of the refining workshop in the oil processing industry, so that the waste gas can be discharged after reaching the standard.
1. The waste gas purification device for the refining workshop in the grease processing industry is convenient to install and occupies small area on site;
2. the operation process of the waste gas purification device of the refining workshop in the grease processing industry is safe, stable and reliable, and the operation and the maintenance are convenient;
3. the multiple treatment processes are combined into integrated equipment, and the borne waste gas concentration and component load are large;
4. the targeted selection treatment process for the components of the waste gas can better control the operation and maintenance cost of the system;
5. the equipment is made of stainless steel, so that the appearance and the service life of the system are guaranteed to the maximum extent;
6. the tail end of the waste gas treatment system is designed with a dry neutralization method (industrial deodorization membrane), which not only ensures the cost index of the discharged waste gas, but also can effectively control the odor concentration of the discharge outlet.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a grease processing industry refining workshop exhaust gas purification device, includes a plurality of connecting pipes, its characterized in that: grease processing trade refining workshop exhaust gas purification device still includes integration equipment, gas distribution device and peculiar smell controller, integration equipment the gas distribution device reaches the peculiar smell controller passes through the connecting pipe communicates in proper order, integration equipment is inside to spray structure, second grade including the one-level and to spray structure and compound photocatalysis structure, and waste gas follows the connecting pipe gets into in proper order behind the integration equipment the one-level sprays the structure and the second grade sprays the structure and wash, and the waste gas dehydration after the washing gets into again behind the compound photocatalysis structure decomposition organic matter the gas distribution device reaches the peculiar smell controller thoroughly deodorizes.
2. The grease processing industry refinery workshop exhaust gas purification device of claim 1, wherein: the first-stage spraying structure comprises a cross-flow washing tank, a packed bed positioned in the cross-flow washing tank, a spraying structure positioned at the top of the packed bed and a circulating water tank, wherein in the cross-flow washing tank, waste gas horizontally passes through one or more packed beds to be purified, the packed bed is cleaned from the top, and cleaning liquid is sprayed on the top of the packed bed and flows through the packed bed to enter the circulating water tank.
3. The grease processing industry refinery workshop exhaust gas purification device of claim 2, wherein: and NaOH solution or lime water is added into the circulating water tank.
4. The grease processing industry refinery workshop exhaust gas purification device of claim 1, wherein: the secondary spraying structure comprises a cross-flow washing tank, a packed bed positioned in the cross-flow washing tank, a spraying structure positioned at the top of the packed bed and a circulating water tank, wherein in the cross-flow washing tank, waste gas horizontally passes through one or more packed beds to be purified, the packed bed is cleaned from the top, and cleaning liquid is sprayed on the top of the packed bed and flows through the packed bed to enter the circulating water tank.
5. The grease processing industry refinery workshop exhaust gas purification device of claim 4, wherein: NEW BIO-C deodorant liquid is added into the circulating water tank.
6. The grease processing industry refinery workshop exhaust gas purification device of claim 1, wherein: the composite photocatalytic structure comprises a pretreatment section, wherein the pretreatment section comprises a plurality of modularized composite fibers, and the composite fibers adsorb harmful chemical gases in waste gases.
7. The grease processing industry refinery workshop exhaust gas purification device of claim 6, wherein: the composite photocatalytic structure comprises a composite photocatalytic section, the composite photocatalytic section comprises a high-energy ultraviolet lamp, and waste gas is irradiated by a high-energy ultraviolet lamp beam to decompose organic matters.
8. The grease processing industry refinery workshop exhaust gas purification device of claim 7, wherein: the ultraviolet wavelength of the high-energy ultraviolet lamp is 182nm, 254nm or 365 nm.
9. The grease processing industry refinery workshop exhaust gas purification device of claim 1, wherein: the gas distribution device to peculiar smell controller gas distribution, peculiar smell controller includes deodorization diaphragm, deodorization particle evenly distributed in deodorization diaphragm surface, the deodorization microparticle can initiatively catch the foul smell gas molecule in the air rapidly to live the foul smell particle parcel and take place non-covalent bonding, owing to the increase of combining the back proportion, produce and subside.
10. A method for purifying waste gas of a refining workshop in the oil processing industry is characterized by comprising the following steps:
washing with alkali liquor: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas is purified after horizontally passing through one or more packing beds, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing, the cleaning liquid flows through the packing and enters a circulating water tank, NaOH solution or lime water is added into the circulating water tank, and substances such as NH3, H2S, thiol and fatty acid which is difficult to decompose are removed;
and (3) washing with odor liquid: collecting and conveying the waste gas to a multi-stage cross-flow washing tank, wherein in the cross-flow washing tank, the gas horizontally passes through one or more packing beds to be purified, the packing is cleaned from the top, cleaning liquid is sprayed on the top of the packing and flows through the packing to enter a circulating water tank, and NEW BIO-C deodorizing liquid or hydrogen peroxide is added into the circulating water tank, so that various pollutants in the waste gas can be effectively removed;
and (3) dehydration treatment: when the gas with mist rises and passes through the spraying washing layer, the mist collides with the chemical washing layer and is attached to the surface of the chemical washing layer due to the inertia effect of rising mist, and the liquid drops are separated from the chemical washing layer and fall down until the gathered liquid drops are large enough that the gravity generated by the liquid drops exceeds the resultant force of the rising force of the gas and the surface tension of the liquid;
performing composite photocatalysis: decomposing organic matters in the waste gas under the irradiation of a lamp of a high-energy ultraviolet lamp beam;
gas distribution and deodorization: deodorizing particles are uniformly distributed on the surface of the deodorizing membrane, deodorizing microparticles can quickly and actively capture odorous gas molecules in the air, the odorous particles are wrapped to generate non-covalent bonding, and sedimentation is generated due to the increase of specific gravity after bonding;
discharging: the height of the flue is increased by more than 15 meters through a chimney for discharging.
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| CN201910865297.0A CN110604987A (en) | 2019-09-12 | 2019-09-12 | Waste gas purification device and method for refining workshop in oil processing industry |
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| CN201910865297.0A CN110604987A (en) | 2019-09-12 | 2019-09-12 | Waste gas purification device and method for refining workshop in oil processing industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603909A (en) * | 2020-06-09 | 2020-09-01 | 福州市聚泰环境科技有限公司 | Tail gas treatment process in production of acidified oil |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603909A (en) * | 2020-06-09 | 2020-09-01 | 福州市聚泰环境科技有限公司 | Tail gas treatment process in production of acidified oil |
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Application publication date: 20191224 |
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