CN110975558A - Malodorous gas purification method and purification device - Google Patents
Malodorous gas purification method and purification device Download PDFInfo
- Publication number
- CN110975558A CN110975558A CN201911370626.0A CN201911370626A CN110975558A CN 110975558 A CN110975558 A CN 110975558A CN 201911370626 A CN201911370626 A CN 201911370626A CN 110975558 A CN110975558 A CN 110975558A
- Authority
- CN
- China
- Prior art keywords
- oxidation
- malodorous gas
- treatment
- section
- biological
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a malodorous gas purification method and a purification device, wherein the purification device comprises a box body, an air inlet and an air outlet which are respectively arranged on different sides of the box body, a first treatment section which is arranged in the box body and is sequentially arranged between the air inlet and the air outlet and can carry out cooling, dust removal and oxidation treatment on the malodorous gas, a second treatment section which can carry out humidification, neutralization and absorption treatment on the malodorous gas, and a biological filter bed section, wherein the air inlet, the first treatment section, the second treatment section, the biological filter bed section and the air outlet are sequentially communicated, the malodorous gas entering the purification device is subjected to cooling, dust removal, oxidation, neutralization and absorption treatment and then to biological oxidation treatment, and thus, the treated gas can completely reach the emission standard.
Description
Technical Field
The invention relates to the technical field of malodorous gas treatment, in particular to a malodorous gas purification method and a malodorous gas purification device.
Background
The waste incineration plant comprises various storage workshops, materialization workshops, curing workshops and storage tank areas, wherein different amounts of waste water and liquid are generated in each workshop and each area and need to be conveyed to a sewage treatment station for treatment. The method can generate multi-pollutant malodorous gases such as hydrogen sulfide, ammonia gas/trimethylamine, mercaptan/thioether/styrene/non-methane total hydrocarbon and the like in the treatment process of the sewage treatment station, the components of the gases are relatively complex, the concentration of the gases is higher than that of other municipal industries, the emission can not reach the standard by adopting a single biological filter bed technology, and the purification efficiency needs to be improved by adopting a combined technology.
Disclosure of Invention
The invention aims to provide a malodorous gas purification method and a malodorous gas purification device, wherein the malodorous gas treated by the malodorous gas purification method can reach the emission standard.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for purifying foul gas features that the foul gas is biologically oxidized after being cooled, dedusted, oxidized, neutralized and absorbed.
The malodorous gas contacts and reacts with the oxidation spray liquid in the oxidation filler layer, the malodorous gas is cooled, dust in the malodorous gas is removed, components which are easy to dissolve in water in the malodorous gas are dissolved in the oxidation spray liquid, and hydrogen sulfide and reducing substances in the malodorous gas are removed by oxidation reaction with an oxidant in the oxidation spray liquid; preferably, the malodorous gas after temperature reduction, dust removal and oxidation contacts and reacts with the alkaline spray liquid in the filler layer, and the acidic, alcoholic and grease components of the malodorous gas are neutralized with the alkaline component in the alkaline spray liquid and absorbed and removed.
And the malodorous gas is subjected to biological oxidation treatment and then subjected to demisting treatment.
The utility model provides a foul gas purifier, includes the box, set up respectively in the air inlet and the gas vent of box different sides, set up in the box and set gradually in can cool down, remove dust, oxidation treatment's first processing section, can carry out the second processing section of humidification, neutralization absorption treatment, the biological filter bed section that can carry out biological oxidation treatment to foul gas between air inlet and the gas vent, air inlet, first processing section, second processing section, biological filter bed section, gas vent communicate with each other in proper order.
The biological filter bed section comprises a biological oxidation filler layer and a biological oxidation spraying layer which are arranged in the box body, and the biological oxidation spraying layer is arranged above the biological oxidation filler layer; and a second partition plate is arranged between the second treatment section and the biological filter bed section, and a pipe hole is formed in the lower side of the second partition plate and used for allowing the malodorous gas to flow to the biological filter bed section from the second treatment section.
The malodorous gas purification device also comprises a gas distribution pipe arranged below the biological oxidation packing layer, and a plurality of exhaust holes are arranged on the pipe wall of the gas distribution pipe at intervals; the gas inlet of the gas distribution pipe is communicated with the pipe hole in the second partition plate; preferably, the air distribution pipes include a plurality of transversely extending air distribution pipes arranged at intervals and a plurality of longitudinally extending air distribution pipes arranged at intervals, and the plurality of transversely extending air distribution pipes and the plurality of longitudinally extending air distribution pipes are communicated with each other to form a grid shape.
The first treatment section, the second treatment section and the biological filter bed section are sequentially and horizontally arranged, a first partition plate is arranged between the first treatment section and the second treatment section, the lower end of the first partition plate is connected with the bottom wall of the box body, and a channel for malodorous gas to flow from the first treatment section to the second treatment section is formed between the upper end of the first partition plate and the top wall of the box body without contacting.
The first treatment section comprises an oxidation packing layer and an oxidation spraying layer arranged on the upper side of the oxidation packing layer, the second treatment section comprises a humidification absorption packing layer and a humidification absorption spraying layer arranged above the humidification absorption packing layer, each spraying layer comprises a spraying main pipe and a branch pipe, one end of each branch pipe is communicated with the main pipe, and a plurality of nozzles are arranged on the branch pipes at intervals; preferably, the side wall of the box body is provided with a first water outlet corresponding to the lower side of the first treatment section, a second water outlet corresponding to the lower side of the second treatment section, a third water outlet corresponding to the lower side of the biological filter bed section, the third water outlet is communicated with a spraying liquid storage box through a pipeline, and a water inlet of a spraying main pipe of the oxidation spraying layer is communicated with the spraying liquid storage box; preferably, each filler layer is supported by a support frame, the support frame comprises a support grid supported below the filler, a support beam supported below the support grid, and a support column supported below the support beam, and the lower end of the support column is connected with the bottom wall of the box body.
The top wall, the bottom wall and each side wall of the box body comprise a plurality of wall plates, a carbon steel square tube is fixed around each wall plate, and adjacent wall plates are fixedly connected through the carbon steel square tubes; preferably, the wallboard comprises an inner clamping plate and an outer clamping plate which are arranged at intervals, and a polyurethane heat-insulating material layer which is filled between the inner clamping plate and the outer clamping plate in a vacuum mode.
The foul gas purification device further comprises a demisting device, a demisting shell is arranged on one side of the top wall of the box body, the demisting device is arranged in the demisting shell, the exhaust port is arranged at the top of the demisting shell, and a hole is formed in the position, corresponding to the lower end of the demisting shell, of the top wall of the box body for supplying the bio-filter bed section to the demisting device.
The invention has the beneficial effects that:
1. the malodorous gas purification method and the purification device are adopted to purify the malodorous gas, so that the malodorous gas with different properties and multiple components can be subjected to multiple synergistic treatments such as oxidation, neutralization and absorption, biological oxidation and the like, thereby having high comprehensive purification efficiency and ensuring that the treated gas can completely reach the emission standard;
2. the invention integrates various processing sections into a box body, thereby realizing the integrated processing of malodorous gas, realizing the function of multiple purposes of one device, effectively saving the occupied area, reducing the investment cost and leading the structure of the purification device of the invention to be more compact;
3. the air distribution pipe arranged below the biological filter bed section adopts the integral grid frame structure design, and the branch pipe is provided with a plurality of air outlets so as to ensure that malodorous gas enters the biological filter bed section and can be uniformly distributed, and then enters the biological oxidation packing layer so as to ensure the biological oxidation purification efficiency;
4. the side wall of the box body is assembled in a module mode, so that the box body can be integrally prefabricated in a factory, and the installation work amount on a project implementation site is greatly reduced;
5. the box wallboard adopts the form of interior outer splint + vacuum polyurethane filling layer for it is more superior in the aspect of leakproofness, intensity, outward appearance, and the heat preservation effect is better, and to the great equipment of size, this wallboard structure can accomplish the prefabrication in the mill, need not to carry out the heat preservation construction at the project scene, thereby has saved the field installation engineering volume.
Drawings
FIG. 1 is a schematic sectional view of a malodorous gas purification apparatus of the present invention;
FIG. 2 is a schematic top view showing the arrangement of a gas distribution pipe of the malodorous gas purification device of the present invention;
FIG. 3 is a schematic view of a second partition plate of the malodorous gas purification device of the present invention;
FIG. 4 is an enlarged sectional view of a wall plate of the malodorous gas purifying device of the present invention;
FIG. 5 is a schematic top view showing the arrangement of the packing support means of the malodorous gas purification device of the present invention;
FIG. 6 is a schematic view showing the arrangement of the shower pipes of the malodorous gas purification device of the present invention;
FIG. 7 is a schematic view of the rear side of the cabinet of the malodorous gas purification device of the present invention;
fig. 8 is a schematic view of the casing of the malodorous gas purification device of the present invention.
Detailed Description
The invention discloses a malodorous gas purification method, wherein the malodorous gas is subjected to biological oxidation treatment after cooling, dust removal, oxidation, neutralization and absorption treatment.
The malodorous gas contacts and reacts with the oxidation spray liquid in the oxidation filler layer, the malodorous gas is cooled, dust in the malodorous gas is removed, components which are easy to dissolve in water in the malodorous gas are dissolved in the oxidation spray liquid, and hydrogen sulfide and reducing substances in the malodorous gas are removed by oxidation reaction with an oxidant in the oxidation spray liquid; preferably, the malodorous gas after temperature reduction, dust removal and oxidation is contacted and reacted with the alkaline spray liquid in the humidifying and absorbing filler layer, and the acidic, alcohol and grease components of the malodorous gas are neutralized with the alkaline component in the alkaline spray liquid and absorbed and removed.
And the malodorous gas is subjected to biological oxidation treatment and then subjected to demisting treatment.
As shown in fig. 1, the present invention also discloses a malodorous gas purification device, which comprises a box body 1, an air inlet 11 and an air outlet 12 which are respectively arranged at different sides of the box body 1, a first treatment section 2 which is arranged in the box body 1 and is sequentially arranged between the air inlet 11 and the air outlet 12 and can perform cooling, dust removal and oxidation treatment on the malodorous gas, a second treatment section 3 which can perform humidification, neutralization and absorption treatment on the malodorous gas, and a biological filter bed section 4 which can perform biological oxidation treatment on the malodorous gas, wherein the air inlet 11, the first treatment section 2, the second treatment section 3, the biological filter bed section 4 and the air outlet 12 are sequentially communicated.
The biological filter bed section 4 comprises a biological oxidation filler layer 41 and a biological oxidation spraying layer 42 which are arranged in the box body 1, and the biological oxidation spraying layer 42 is arranged above the biological oxidation filler layer 41.
Referring to fig. 2 and 3, in this embodiment, preferably, the malodorous gas purification device of the present invention further includes a gas distribution pipe 7 disposed below the bio-oxidation packing layer 41, and a plurality of gas exhaust holes 70 are disposed at intervals on a pipe wall of the gas distribution pipe 7; the gas inlet of the gas distribution pipe 7 is communicated with the pipe hole 61 on the second partition plate 6, so that the gas can only enter the gas distribution pipe 7 through the pipe hole 61, and then exits from the exhaust hole 70 on the gas distribution pipe 7 and moves upwards.
The air distribution pipe 7 comprises a plurality of transversely extending air distribution pipes 72 arranged at intervals and a plurality of longitudinally extending air distribution pipes 3 arranged at intervals, and the plurality of transversely extending air distribution pipes 72 and the plurality of longitudinally extending air distribution pipes 3 are communicated with each other to form a grid shape. Preferably, the plurality of transverse air distribution pipes 72 are integrally formed with the plurality of vertical air distribution pipes 7, so as to form an integral grid-frame structure. Therefore, the malodorous gas can be ensured to uniformly distribute after entering the biological filter bed section 4 and then enter the biological oxidation filler layer 41, so that the biological oxidation purification efficiency is ensured, and the gas purification effect is further ensured.
The partition plate is provided with a corresponding number of pipe holes 61 corresponding to the number of the transverse air distribution pipes 72, so that the air distribution is more uniform.
In other embodiments, one air distribution pipe 7 may be formed into a shape of mosquito coil or other feasible shapes, as long as the air vents 70 of the air distribution pipe 7 are distributed on the lower side of the bio-filler layer, so as to make the air distribution more uniform, rather than that, as in the conventional technology, the air directly enters the lower side of the bio-flavoring layer from the related air inlet 11, the concentration of the air around the air inlet 11 is high, and the concentration of other surrounding air is low, which is not favorable for the sufficient treatment and absorption of the air.
In this embodiment, the preferred, bio-oxidation packing layer 41 is provided with two-layerly, corresponds, bio-oxidation sprays the layer 42 and also is provided with two-layerly, and each bio-oxidation packing layer 41 upside all has a bio-oxidation to spray layer 42 promptly, so sets up, can effectively solve the problem that the bearing structure that one deck bio-oxidation filler load overweight leads to collapses, simultaneously, can also effectively solve one deck bio-oxidation filler and pile up the wind permeability that leads to too high and hang down, pack the jam scheduling problem to further improve gaseous purifying effect, can guarantee exhaust up to standard more. The plurality of air distribution pipes 7 are positioned at the lower side of the lower biological oxidation filler layer 41.
The bio-oxidation filler layer 41 can be made of sponge plastic balls or other materials beneficial to the propagation of microorganisms.
The spray liquid of the bio-oxidation spray layer 42 can be added with biological strains initially, and with the proceeding of gas treatment, the spray liquid can be sprayed on the bio-oxidation filler, and the biological strains can automatically propagate, so that the biological strains are not required to be continuously added into the bio-oxidation spray liquid subsequently.
The first treatment section 2 comprises an oxidation filler layer 21 and an oxidation spraying layer 22 arranged on the upper side of the oxidation filler layer 21. The spray liquid of the oxidation spray layer 22 is an oxidation spray liquid containing an oxidant (such as sodium hypochlorite), so that most of the hydrogen sulfide, reducing substances and other components in the malodorous gas can be removed by oxidation reaction with the oxidant in the oxidation spray liquid, thereby reducing the burden of subsequent treatment and further ensuring the treatment effect of the malodorous gas.
The second treatment section 3 comprises a humidifying absorbent filler layer 31 and a humidifying absorbent spray layer 32 arranged above the humidifying absorbent filler layer 31.
The humidifying and absorbing spray liquid sprayed by the humidifying and absorbing spray layer 32 is alkaline spray liquid, such as sodium hydroxide spray liquid, the spray liquid can increase the humidity of the gas when contacting with the gas, and the alkaline component in the alkaline spray liquid can react with most malodorous components in the malodorous gas, such as acid, alcohols, grease and the like, namely the malodorous components are neutralized with the alkaline component of the alkaline spray liquid and absorbed, so that most of the malodorous components in the malodorous gas are removed, and the burden of a subsequent biological filtering section is further reduced.
The oxidation filler layer 21 and the humidification absorption filler layer 31 can adopt conventional fillers such as polyhedral hollow spheres or Raschig rings and the like.
In combination with fig. 5, each of the packing layers is supported by a support frame, in this embodiment, the support frame includes a support grid (not shown) supported below the packing, a support beam supported below the support grid, and support columns supported below the support beam (in fig. 1 and 5, 23, 24, and 25 respectively indicate a support beam, a support column, and a support grid for supporting the oxidation packing layer 21 in the first treatment section, 33, 34, and 35 respectively indicate a support beam, a support column, and a support grid for supporting the humidification absorption packing layer 31 in the second treatment section, and 43, 44, and 45 respectively indicate a support beam, a support column, and a support grid for supporting the bio-oxidation packing layer 41), and lower ends of the support columns are connected to a bottom wall of the box 1, so as to support the packing at corresponding positions. In this embodiment, preferably, a steel plate is welded below the supporting column and fixed to the bottom wall of the box body; the supporting beams are welded with the supporting columns, steel plates are welded on the parts, facing the inner wall of the box body 1, of the supporting beams, then the steel plates and the inner wall of the box body 1 are fixedly connected through glass fiber reinforced plastic paste, the supporting grids are flatly laid on the supporting beams, and therefore the filler is stably supported at the corresponding positions. Preferably, the support grid is divided into a plurality of splicing modes.
Preferably, the support grid, the support beam and the support column can be directly made of glass fiber reinforced plastics or made of carbon steel and then the surface of the support grid, the support beam and the support column is subjected to glass fiber reinforced plastics corrosion prevention. Therefore, the corrosion of the device can be prevented from affecting the service life of the device.
The support column extends from top to bottom, the support beam can transversely extend from left to right or longitudinally extend from front to back as required, and the distance between the support beam and the support column can be adjusted as required by the support strength. Because the biological filter layer is provided with two layers of packing layers, the support grids of the lower packing layer can be provided with corresponding avoidance holes according to the positions of the support columns 44 so as to allow the support columns 44 supporting the upper support beams 43 to pass through; or the size and arrangement of the support grids can be adjusted according to the position of the filler support columns 44.
A layer of silk screen (not shown) can be laid on the support grid, and the filler is placed on the silk screen to prevent the filler from falling.
As shown in fig. 6, each spraying layer includes a main spraying pipe and a branch pipe, one end of each branch pipe is communicated with the main spraying pipe, a plurality of nozzles are arranged on the branch pipes at intervals (in fig. 1 and 6, marks 221, 222 and 223 are respectively the main pipe, the branch pipe and the nozzle of the oxidation spraying layer 22, marks 321, 322 and 323 are respectively the main pipe, the branch pipe and the nozzle of the oxidation humidification absorption spraying layer 32, and marks 421, 422 and 423 are respectively the main pipe, the branch pipe and the nozzle of the biological oxidation spraying layer 42), a water inlet of each main spraying pipe is communicated with a corresponding spraying liquid storage tank, and the spraying liquid enters the main pipe and then enters the branch pipe, and is sprayed downwards through the nozzles. Preferably, the branch pipes are arranged at intervals, so that spraying liquid is sprayed more uniformly, and full contact between gas and liquid is facilitated.
The spraying main pipe can be fixedly connected with the box body relatively, such as welding, flange connection and the like.
As shown in fig. 7, in this embodiment, preferably, the sidewall of the box body 1 is provided with a first water outlet 13 corresponding to the lower side of the first treatment section 2, a second water outlet 4 corresponding to the lower side of the second treatment section 3, and a third water outlet 15 (as shown in fig. 5) corresponding to the lower side of the biological filter bed section, and the three water outlets are communicated with a spray liquid storage tank corresponding to the mother pipe of the oxidation spray layer 22 through a pipeline, that is, the spray liquid sprayed by the oxidation spray layer 22 is the liquid discharged from the first water outlet 13, the second water outlet 4, and the third water outlet 15, so as to form a circulating spray pipeline, so that the liquid in the external storage tank can be fully utilized, thereby achieving the purpose of recycling, and saving more energy.
The first drain port 13 and the second drain port 4 are disposed at the lower side of the rear wall of the tank 1.
The water inlets of the humidifying absorption spray pipe and the biological oxidation spray pipe are respectively communicated with other different external storage tanks through pipelines, so that corresponding solvents or biological strains can be conveniently added into the corresponding storage tanks.
Preferably, the water inlets of the cooling dust-removing spray pipe, the humidifying absorption spray pipe and the biological oxidation spray pipe are respectively provided with flanges 28, 38 and 48 for connecting with corresponding pipelines, so that the assembly is more convenient.
The malodorous gas purification device also comprises a demisting device 8, wherein a demisting shell 16 is arranged on one side of the top wall of the box body 1, the demisting device 8 is arranged in the demisting shell 16, the exhaust port 12 is arranged at the top of the demisting shell 16, and a hole is formed in the top wall of the box body 1 at the position corresponding to the lower end of the demisting shell 16 and used for communicating the biological filter bed section 4 with the demisting device 8.
Preferably, a flange is disposed on the top of the defogging housing 16 at the position of the exhaust port 12, so as to facilitate connection with subsequent treatment equipment or a discharge fan, a chimney, etc.
The demisting device 8 can be in the form of a wire mesh demister or demisting filler (such as filler balls) and a support grid.
A charging opening 161 is provided on one side of the demister casing 16, through which the demister device 8 is pushed into the demister casing 16.
Preferably, the top wall, the bottom wall and the side walls of the box body 1 are all in a module assembly form, that is, the top wall, the bottom wall and the side walls of the box body 1 all comprise a plurality of wall plates, a carbon steel square tube (not shown) is fixed around each wall plate, and adjacent wall plates are fixedly connected through the carbon steel square tube. In this embodiment, when splicing, align the carbon steel square tube around corresponding wallboard and then weld, can install the location fast to save the engineering volume. That is to say, the roof diapire and the lateral wall of box do not all not an solitary big board, but form by a plurality of little module assembly, so, also can support the intensity of box. Therefore, the box body can be integrally prefabricated in a factory, namely, the top wall, the bottom wall and the side walls can be prefabricated in the factory, and the installation engineering quantity on a project implementation site is greatly reduced.
Each of the panels includes an inner plywood 17 and an outer plywood 18 which are arranged at intervals, and a polyurethane thermal insulation material filling layer 19 (shown in fig. 4) which is vacuum-filled between the inner plywood 17 and the outer plywood 18. According to the arrangement, the prefabrication of equipment with larger size can be completed in a factory, the equipment is directly processed in the factory, namely the polyurethane thermal insulation material is clamped by the inner and outer clamping plates, so that the wallboard with the inner and outer clamping plates and the vacuumizing type polyurethane thermal insulation material filling layer 19 is formed, no gap exists between the two clamping plates, and compared with a common mode that one clamping plate and one rock wool are added for thermal insulation, the box body 1 is superior in tightness, strength and appearance, and the engineering quantity of field installation is saved, because the rock wool thermal insulation mode is usually constructed on a project site.
The specific working principle of the malodorous gas purification method and the purification device provided by the invention is as follows:
malodorous gas enters the box body 1 from the air inlet and flows upwards, the oxidation spray layer 22 sprays oxidation spray liquid containing oxidant downwards, so that the malodorous gas and the spray liquid are in full contact at the oxidation packing layer 21, the malodorous gas is cooled, dust in the malodorous gas is heavy after being adhered with the spray liquid and flows downwards along with the spray liquid to fall into the lower part of the box body 1, and components which are easy to dissolve in water in the malodorous gas are dissolved in the spray liquid, are absorbed by the spray liquid and flow downwards along with the spray liquid to fall into the lower box body 1; most of the hydrogen sulfide, reducing substances and other components in the malodorous gas react with the oxidant to be oxidized and removed, and the malodorous gas falls into the lower part of the box body 1 along with the spraying liquid, namely the malodorous gas is oxidized and absorbed by the spraying liquid; thus, the cooling and dedusting section carries out cooling, dedusting, absorption and oxidation treatment on the malodorous gas;
the remaining gas continues to flow upwards and then enters the second treatment section 3 through the first partition plate 5 and the channel 50 of the wall bracket at the top of the box body 1;
the gas contacts with the spray liquid along with the spraying of the humidifying absorption spray liquid and fully contacts in the absorption filler layer, most of malodorous components such as acid, alcohols, grease and the like in the gas are neutralized with alkaline components in the spray liquid to be removed, and the malodorous components fall into the lower box body 1 along with the spray liquid; thus, the humidifying absorption section neutralizes and absorbs malodorous gas, the malodorous gas is in gas-liquid contact, the humidity of the gas is higher, namely the humidity of the gas is increased, and the subsequent gas enters from the air inlet all the way, so that the humidified and absorbed gas flows downwards, enters the gas distribution pipe 7 through the pipe hole 61 of the second partition plate 6 and enters the biological filtration section from the exhaust hole 70 of the gas distribution pipe 7;
the gas from the gas distribution pipe vent holes 70 flows upwards and is fully contacted with the biological oxidation spray liquid in the biological filler layer, and the gas liquid is fully contacted with biological strains and is subjected to oxidation reaction in the biological filler layer, so that residual malodorous components (particularly organic malodorous components) in the gas are oxidized and decomposed by the biological strains and are removed, and the residual malodorous components fall into the box body 1 below; thus, the biological oxidation section carries out deep biological oxidation decomposition on the gas;
and the gas left after the treatment continuously flows upwards, is subjected to demisting treatment through the demisting layer, is discharged through the air outlet, and enters a subsequent induced draft fan or a discharge chimney to be discharged.
As described above, the malodorous gas entering the malodorous gas purification device of the present invention is subjected to the multiple synergistic treatment of dust removal, temperature reduction, absorption, oxidation, humidification, neutralization and absorption, and biological oxidation, so that the comprehensive purification efficiency is high, and the treated gas can completely reach the emission standard.
As shown in fig. 7 and 8, a plurality of windows 101 and 102 are respectively arranged on the front side wall and the rear side wall of the box body 1 at intervals, so that an operator can see the real-time processing condition in the box body 1 through the windows; and the positions above the front side wall of the box body 1 corresponding to the first treatment section 2, the second treatment section 3 and the biological filter bed section 4 are respectively provided with an openable/closable door on an access hole 103, thereby being convenient for adding and replacing fillers in the box body 1 and carrying out other related maintenance actions. Preferably, a window and an access opening 104 are also provided in the top wall of the box.
The method and the device for purifying the malodorous gas can be suitable for treating the malodorous waste gas in industries such as waste incineration plant sewage treatment stations, waste landfill sewage treatment stations, petrochemical industry sewage treatment stations, pharmaceutical industry sewage treatment stations, waste transfer compression stations, kitchen waste treatment workshops and the like.
Claims (10)
1. A malodorous gas purification method is characterized in that: the malodorous gas is subjected to biological oxidation treatment after cooling, dust removal, oxidation, neutralization and absorption treatment.
2. The malodorous gas purification method according to claim 1, wherein: the malodorous gas contacts and reacts with the oxidation spray liquid in the oxidation filler layer, the malodorous gas is cooled, dust in the malodorous gas is removed, components which are easy to dissolve in water in the malodorous gas are dissolved in the oxidation spray liquid, and hydrogen sulfide and reducing substances in the malodorous gas are removed by oxidation reaction with an oxidant in the oxidation spray liquid; preferably, the malodorous gas after temperature reduction, dust removal and oxidation is contacted and reacted with the alkaline spray liquid in the humidifying and absorbing filler layer, and the acidic, alcohol and grease components of the malodorous gas are neutralized with the alkaline component in the alkaline spray liquid and absorbed and removed.
3. The malodorous gas purification method according to claim 1 or 2, wherein: and the malodorous gas is subjected to biological oxidation treatment and then subjected to demisting treatment.
4. A malodorous gas purification device is characterized in that: including the box, set up respectively in the air inlet and the gas vent of the box different sides, set up in the box and set gradually in can cool down, remove dust, oxidation treatment's first processing section, can carry out the second processing section that humidification, neutralization absorbed the processing to malodorous gas, can carry out biological oxidation treatment's biological filter bed section to malodorous gas between air inlet and the gas vent, air inlet, first processing section, second processing section, biological filter bed section, gas vent communicate with each other in proper order.
5. The malodorous gas purification apparatus according to claim 4, wherein: the biological filter bed section comprises a biological oxidation filler layer and a biological oxidation spraying layer which are arranged in the box body, and the biological oxidation spraying layer is arranged above the biological oxidation filler layer; and a second partition plate is arranged between the second treatment section and the biological filter bed section, and a pipe hole is formed in the lower side of the second partition plate and used for allowing the malodorous gas to flow to the biological filter bed section from the second treatment section.
6. The malodorous gas purification apparatus according to claim 5, wherein: the biological oxidation packing layer is arranged on the inner wall of the shell, and the biological oxidation packing layer is arranged on the inner wall of the shell; the gas inlet of the gas distribution pipe is communicated with the pipe hole in the second partition plate; preferably, the air distribution pipes include a plurality of transversely extending air distribution pipes arranged at intervals and a plurality of longitudinally extending air distribution pipes arranged at intervals, and the plurality of transversely extending air distribution pipes and the plurality of longitudinally extending air distribution pipes are communicated with each other to form a grid shape.
7. The malodorous gas purification apparatus according to any one of claims 4 to 6, wherein: the first treatment section, the second treatment section and the biological filter bed section are sequentially and horizontally arranged, a first partition plate is arranged between the first treatment section and the second treatment section, the lower end of the first partition plate is connected with the bottom wall of the box body, and a channel for malodorous gas to flow from the first treatment section to the second treatment section is formed between the upper end of the first partition plate and the top wall of the box body without contacting.
8. The malodorous gas purification apparatus according to claim 7, wherein: the first treatment section comprises an oxidation packing layer and an oxidation spraying layer arranged on the upper side of the oxidation packing layer, the second treatment section comprises a humidification absorption packing layer and a humidification absorption spraying layer arranged above the humidification absorption packing layer, spraying liquid sprayed out of the humidification absorption spraying layer is set to be alkaline spraying liquid, each spraying layer comprises a spraying main pipe and a branch pipe, one end of each branch pipe is communicated with the main pipe, and a plurality of nozzles are arranged on the branch pipes at intervals; preferably, the side wall of the box body is provided with a first water outlet corresponding to the lower side of the first treatment section, a second water outlet corresponding to the lower side of the second treatment section, a third water outlet corresponding to the lower side of the biological filter bed section, the third water outlet is communicated with a spraying liquid storage box through a pipeline, and a water inlet of a spraying main pipe of the oxidation spraying layer is communicated with the spraying liquid storage box; preferably, each filler layer is supported by a support frame, the support frame comprises a support grid supported below the filler, a support beam supported below the support grid, and a support column supported below the support beam, and the lower end of the support column is connected with the bottom wall of the box body.
9. The malodorous gas purification apparatus according to claim 4, 5, 6 or 8, wherein: the top wall, the bottom wall and each side wall of the box body comprise a plurality of wall plates, a carbon steel square tube is fixed around each wall plate, and adjacent wall plates are fixedly connected through the carbon steel square tubes; preferably, the wallboard comprises an inner clamping plate and an outer clamping plate which are arranged at intervals, and a polyurethane heat-insulating material layer which is filled between the inner clamping plate and the outer clamping plate in a vacuum mode.
10. The malodorous gas purification apparatus according to any one of claims 4 to 9, wherein: the biological filter bed further comprises a demisting device, wherein a demisting shell is arranged on one side of the top wall of the box body, the demisting device is arranged in the demisting shell, the exhaust port is arranged at the top of the demisting shell, and a hole is formed in the position, corresponding to the lower end of the demisting shell, of the top wall of the box body, and the biological filter bed section is communicated with the demisting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370626.0A CN110975558A (en) | 2019-12-26 | 2019-12-26 | Malodorous gas purification method and purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911370626.0A CN110975558A (en) | 2019-12-26 | 2019-12-26 | Malodorous gas purification method and purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110975558A true CN110975558A (en) | 2020-04-10 |
Family
ID=70077499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911370626.0A Pending CN110975558A (en) | 2019-12-26 | 2019-12-26 | Malodorous gas purification method and purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110975558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209794A (en) * | 2021-05-07 | 2021-08-06 | 南京飞锦环保科技有限公司 | Biological soil deodorization system and deodorization method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101366966A (en) * | 2008-09-23 | 2009-02-18 | 浙江大学 | Cleaning treatment method and apparatus for malodorous gas |
| CN104587808A (en) * | 2013-10-30 | 2015-05-06 | 杭州楚天科技有限公司 | Sludge drying tail gas treatment apparatus and treatment method thereof |
| CN107441908A (en) * | 2017-08-17 | 2017-12-08 | 泸州川西化玻璃钢有限公司 | A kind of industrial waste gas centralized processing system |
| CN108404621A (en) * | 2018-04-13 | 2018-08-17 | 深圳市兴能保环境科技有限公司 | The Deodor method and device generated in poultry of dying of illness innocent treatment procedure |
| CN108404646A (en) * | 2018-01-17 | 2018-08-17 | 苏州驰伦环保设备有限公司 | Exhaust gas biological deodorizing tower |
| CN109865411A (en) * | 2017-12-01 | 2019-06-11 | 河南正达环保科技有限公司 | The device and method of VOCs in a kind of purification exhaust gas |
| CN109876647A (en) * | 2019-04-04 | 2019-06-14 | 哈尔滨工业大学 | Microorganism electrochemical intensified ecotype indoor air-purification device and method |
-
2019
- 2019-12-26 CN CN201911370626.0A patent/CN110975558A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101366966A (en) * | 2008-09-23 | 2009-02-18 | 浙江大学 | Cleaning treatment method and apparatus for malodorous gas |
| CN104587808A (en) * | 2013-10-30 | 2015-05-06 | 杭州楚天科技有限公司 | Sludge drying tail gas treatment apparatus and treatment method thereof |
| CN107441908A (en) * | 2017-08-17 | 2017-12-08 | 泸州川西化玻璃钢有限公司 | A kind of industrial waste gas centralized processing system |
| CN109865411A (en) * | 2017-12-01 | 2019-06-11 | 河南正达环保科技有限公司 | The device and method of VOCs in a kind of purification exhaust gas |
| CN108404646A (en) * | 2018-01-17 | 2018-08-17 | 苏州驰伦环保设备有限公司 | Exhaust gas biological deodorizing tower |
| CN108404621A (en) * | 2018-04-13 | 2018-08-17 | 深圳市兴能保环境科技有限公司 | The Deodor method and device generated in poultry of dying of illness innocent treatment procedure |
| CN109876647A (en) * | 2019-04-04 | 2019-06-14 | 哈尔滨工业大学 | Microorganism electrochemical intensified ecotype indoor air-purification device and method |
Non-Patent Citations (3)
| Title |
|---|
| 张殿印等: "《环境工程入门》", 28 February 1987, 冶金工业出版社出版 * |
| 杨昌举主编: "《合理膳食与科学烹饪》", 30 November 1999, 北京：科学技术文献出版社 * |
| 蒋文举等: "《大气污染控制工程》", 30 September 2001, 四川大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113209794A (en) * | 2021-05-07 | 2021-08-06 | 南京飞锦环保科技有限公司 | Biological soil deodorization system and deodorization method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113457408B (en) | Efficient kitchen malodorous gas purifying system | |
| CN205965456U (en) | Organic waste gas integrated treating equipment | |
| CN110975558A (en) | Malodorous gas purification method and purification device | |
| CN212039790U (en) | Movable combined deodorization system | |
| CN212091628U (en) | Processing system of tail gas that produces in laboratory waste liquid is placed or is dealt with process | |
| CN211963501U (en) | Malodorous gas purification device | |
| CN111298559A (en) | Flue gas dust removal and purification device | |
| CN217795484U (en) | Modularization integral type biological deodorization device | |
| CN108159875B (en) | Modular combined deodorization device | |
| CN216987074U (en) | Biological purification device capable of degrading harmful gas | |
| CN113134278B (en) | Environment management device for garbage transfer station | |
| CN214051047U (en) | Modular activated carbon adsorption box | |
| CN212915162U (en) | Modularization biological deodorization tower | |
| CN210114978U (en) | Novel malodorous gas purification device | |
| CN209934468U (en) | Novel desulfurization and denitrification dust remover | |
| CN212262800U (en) | Tail gas dust removal purification device for insulating tube workshop | |
| CN210473600U (en) | Gas purification and deodorization device | |
| CN209271163U (en) | A kind of Horizontal waste gas treatment apparatus | |
| CN218188924U (en) | Waste gas deodorization purifier | |
| CN107551709B (en) | Comprehensive treatment method and device for waste water and waste gas of paint room | |
| CN217662552U (en) | Biological purification system for malodorous gas of sewage treatment station | |
| CN213643676U (en) | Biological and chemical combined process deodorization equipment | |
| CN219848934U (en) | Easy-maintenance waste gas treatment box suitable for factory layout | |
| CN218516436U (en) | Domestic sewage odor treatment device | |
| CN218981059U (en) | Efficient tail gas treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 518000 e, block a, 6 / F, building 9, Baoneng Science Park, Qinghu community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN RECOMMEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 518000 Shenzhen street, Bantian District, Longgang District, Guangdong City, province, South Ring Road, Bantian International Center Applicant before: SHENZHEN RECOMMEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Qiubao Inventor after: Liang Ruqing Inventor after: Liu Hongyu Inventor after: Zhou Lufa Inventor after: Wang Li Inventor before: Liang Ruqing Inventor before: Feng Qiubao Inventor before: Liu Hongyu Inventor before: Zhou Lufa Inventor before: Wang Li |
|
| CB03 | Change of inventor or designer information |