CN110180324B - Air purifying device and purifying method - Google Patents
Air purifying device and purifying method Download PDFInfo
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- CN110180324B CN110180324B CN201910599448.2A CN201910599448A CN110180324B CN 110180324 B CN110180324 B CN 110180324B CN 201910599448 A CN201910599448 A CN 201910599448A CN 110180324 B CN110180324 B CN 110180324B
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- air
- molecular sieve
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- 238000000034 method Methods 0.000 title abstract description 21
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 171
- 239000002808 molecular sieve Substances 0.000 claims abstract description 165
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000000746 purification Methods 0.000 claims abstract description 28
- 238000004887 air purification Methods 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000005338 heat storage Methods 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 24
- 239000002912 waste gas Substances 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000012855 volatile organic compound Substances 0.000 description 31
- 238000003795 desorption Methods 0.000 description 18
- 230000009471 action Effects 0.000 description 17
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- 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
Abstract
The invention relates to the technical field of air purification, in particular to an air purification device and a purification method, wherein the air purification device comprises a shell, an air inlet fan, a molecular sieve purification assembly, an air outlet assembly and a molecular sieve circulation assembly, wherein the air inlet fan, the molecular sieve purification assembly and the molecular sieve circulation assembly are arranged on the shell; the air inlet fan is provided with a first air inlet and a first air outlet for blowing air to the molecular sieve purification assembly, and purified air is discharged through the air outlet assembly; the molecular sieve purifying component and the molecular sieve circulating component are connected to form a molecular sieve circulating loop for heating, desorbing, cooling and lowering the temperature of the molecular sieve. The invention can effectively remove VOC in the waste gas to achieve the effect of air purification, the purified air can be used for recycling to achieve the effect of zero emission, and the heat in the waste heat air can be recycled, thereby having better energy conservation and environmental protection; the invention has the advantages of simple operation, low investment and operation and maintenance cost, and good practicability and applicability.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an air purification device and an air purification method.
Background
With the increasing rise in atmosphere governance call and the increasingly stringent environmental inspections, volatile Organic Compounds (VOC) contaminated workshops and health problems of employees working in contaminated workshops are becoming increasingly of concern, and exhaust gas treatment devices are increasingly being introduced into enterprise workshops. At present, molecular sieves are applied to the field of air purification due to good adsorptivity and detachability, and a molecular sieve rotating wheel type purification device is the most common air purification device applying molecular sieves on the market at present and is used for treating large air quantity and low concentration VOC based on the adsorption concentration and oxidation combustion principles. However, the adsorption concentration+oxidation combustion method for treating organic waste gas has problems that: the requirements on operation and maintenance are high, the investment and operation and maintenance cost are high, and a large number of production is difficult to put into production and a good market effect is formed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an air purifying device and an air purifying method, which can effectively treat and purify waste gas and effectively avoid environmental pollution caused by waste gas emission; and the waste heat generated in the purifying process can be fully recovered, so that the energy-saving effect is achieved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the air purifying device comprises a shell, an air inlet fan, a molecular sieve purifying component, an air outlet component and a molecular sieve circulating component, wherein the air inlet fan, the molecular sieve purifying component and the molecular sieve circulating component are arranged on the shell; the air inlet fan is provided with a first air inlet communicated with the outside and a first air outlet for blowing air to the molecular sieve purifying component, and the purified air treated by the molecular sieve purifying component is discharged through the air outlet component; the molecular sieve purifying component and the molecular sieve circulating component are connected to form a molecular sieve circulating loop for heating, desorbing, cooling and lowering the temperature of the molecular sieve.
According to the air purifying device, air to be purified is pumped and discharged into the air purifying device through the air inlet fan, and the molecular sieve purifying component performs purifying treatment to output purified air; and the molecular sieve adsorbed with the VOC in the molecular sieve purifying component is returned to the molecular sieve circulating component for multiplexing by the conveying component after being subjected to heating desorption and condensation treatment. The invention can effectively remove VOC in the air to achieve the effect of purifying waste gas, and the molecular sieve adsorbed with VOC can be reused after being heated and condensed to realize the effects of energy conservation and emission reduction; the invention has the advantages of simple operation, low investment and operation and maintenance cost, and good practicability and applicability.
Further, the molecular sieve purifying component comprises a plurality of layers of reticular plates, a crack structure is formed between the adjacent reticular plates, and the molecular sieve is contained in the crack structure. The air flow passes through the molecular sieve purifying component, and the molecular sieve adsorbs substances such as VOC, moisture and the like in the air flow, so that waste gas purification is realized.
Further, the molecular sieve circulation assembly comprises a conveying assembly, a heating assembly for heating and desorbing the molecular sieve and a condensing assembly for condensing the molecular sieve, wherein the heating assembly and the condensing assembly are all arranged above the conveying assembly, the conveying assembly comprises an input end arranged below the molecular sieve purifying assembly and an output end arranged above the molecular sieve purifying assembly, the molecular sieve adsorbed with VOC falls onto the conveying assembly from the input end, and falls back into the molecular sieve purifying assembly from the output end after being heated and desorbed by the heating assembly and condensed by the condensing assembly. The molecular sieve adsorbed with VOC is returned to the molecular sieve purifying component for multiplexing by the conveying component after being subjected to heating desorption and condensation treatment.
Further, a first guide rail is arranged below the molecular sieve purifying component, the first guide rail is communicated with the crack structure, and one end, close to the input end, of the first guide rail is inclined downwards; the molecular sieve purifying component is characterized in that a second guide rail is arranged above the molecular sieve purifying component, and the second guide rail is communicated with the crack structure and is inclined downwards near one end of the crack structure. The molecular sieve adsorbed with VOC falls under the action of gravity and is conveyed to the input end along the first guide rail, and is conveyed to the upper part of the molecular sieve purifying assembly by the conveying assembly, and the molecular sieve falls to the second guide rail from the output end and slides into the molecular sieve purifying assembly along the second guide rail, so that the automatic recycling of the molecular sieve is realized.
Further, the conveying assembly comprises a first conveying belt, a second conveying belt, a third conveying belt, a fourth conveying belt and a conveying belt driving device, and a plurality of baffles which are arranged in parallel are arranged on the surfaces of the first conveying belt, the second conveying belt, the third conveying belt and the fourth conveying belt; one end of the first conveying belt is arranged below the tail end of the first guide rail, the other end of the first conveying belt is arranged above one end of the second conveying belt, the other end of the second conveying belt is arranged above one end of the third conveying belt, the other end of the third conveying belt is arranged above one end of the fourth conveying belt, and the other end of the fourth conveying belt is arranged above the starting end of the second guide rail. Under the drive of the conveyer belt driving device, the molecular sieve falling to the input end of the conveying assembly is sequentially returned to the molecular sieve purifying assembly by the first conveyer belt, the second conveyer belt, the third conveyer belt and the fourth conveyer belt, and a plurality of groups of conveyer belts form the conveying assembly, so that the conveying assembly can be arranged according to different application scenes to save occupied volume; the baffle that sets up on the conveyer belt prevents that molecular sieve from gliding under the action of gravity, guarantees effective transport.
Further, the heating assembly comprises a heater arranged above the second conveying belt and a first fan arranged above the heater, the first conveying belt is arranged in the first hot air cabinet, and the second conveying belt and the heating assembly are arranged in the second hot air cabinet. In the second hot air cabinet, high-temperature air generated by the heater blows the molecular sieve on the second conveying belt under the blowing action of the first fan, the molecular sieve is adsorbed and concentrated VOC is combusted at high temperature to generate carbon dioxide and water, and meanwhile, the water adsorbed by the molecular sieve is desorbed and vaporized at high temperature.
Further, the condensation subassembly includes condenser and second fan, the condenser top is located to the second fan, the condenser is located fourth conveyer belt top, fourth conveyer belt part, condensation subassembly are located in the second cold wind cabinet, in the first cold wind cabinet was located to the third conveyer belt, the intercommunication has the cold wind passageway between first cold wind cabinet, the second cold wind cabinet. The molecular sieve after the desorption is carried to first cold air cabinet under the effect of second conveyer belt, the cold air that blows from the second cold air cabinet through the cold air passageway carries out the heat exchange and reaches preliminary cooling's effect in first cold air cabinet, preliminary refrigerated molecular sieve gets into the second cold air cabinet under the effect of third conveyer belt, the cooling air that the condenser produced gets into the second cold air cabinet under the effect of blowing of second fan and carries out forced cooling to the molecular sieve that gets into the second cold air cabinet, the molecular sieve after the desorption can exert absorption and concentrated effect again, so circulation is reciprocal.
Further, the air outlet assembly comprises an air exhaust fan and an air exhaust pipeline, and the air exhaust fan is provided with a second air inlet for receiving purified air and a second air outlet communicated with the air exhaust pipeline; the air inlet fan, the air exhaust fan and the air exhaust pipeline form an air circulation system. Under the guidance of the exhaust fan and the exhaust pipeline, the purified air is discharged into the room for reuse, and the effect of zero emission is realized.
Further, still include waste heat recovery system, waste heat recovery system includes the heat storage water tank and locates the cooling tube in the heat storage water tank, the one end of cooling tube is connected in the bottom of first hot-blast cabinet, the other end of cooling tube is connected in the top of first hot-blast cabinet, the top of first hot-blast cabinet still communicates with first cold wind cabinet, the second hot-blast cabinet is equipped with the hot return channel of intercommunication second hot-blast cabinet top and second hot-blast cabinet bottom. In the first cold air cabinet, waste heat air which exchanges heat with the molecular sieve flows to the first hot air cabinet to preheat the molecular sieve in the first hot air cabinet; the waste heat air in the first hot air cabinet is led into the heat storage water tank through the cooling pipe, and the waste heat is stored in the heat storage water tank; in the second hot air cabinet, under the blowing action of the first fan, high-temperature air carries out high-temperature blowing on the molecular sieve on the second conveying belt, and the hot air enters the second hot air cabinet again through the hot reflux channel, so that the circulation is repeated.
The invention also provides an air purification method, which comprises an air purification method and a molecular sieve desorption method:
the molecular sieve purifying method comprises the following steps: the air to be purified after dust removal treatment is pumped and discharged into a molecular sieve purification assembly under the action of an air inlet fan; when the air to be purified flows through the molecular sieve, VOC is adsorbed to obtain purified air, and the purified air is discharged through the air outlet component;
molecular sieve desorption method: the molecular sieve adsorbed with VOC falls down to the first guide rail and is guided to the conveying component by the first guide rail, and is conveyed to the second guide rail after being heated, desorbed, cooled and cooled during conveying, and is guided to the molecular sieve purifying component for reuse by the second guide rail.
According to the air purification method, VOC in air to be purified is adsorbed by the molecular sieve when flowing through the molecular sieve to realize air purification, and meanwhile, the molecular sieve adsorbed with the VOC is subjected to heating desorption, cooling and cooling to be recycled, so that the molecular sieve can ensure long-term high-efficiency purification efficiency, and can realize the effects of energy conservation and emission reduction.
Compared with the prior art, the invention has the beneficial effects that:
the invention can effectively remove VOC in the air to be purified to achieve the effect of purifying waste gas, and the molecular sieve adsorbed with VOC can be reused after being heated and condensed to realize the effects of energy conservation and emission reduction; the invention has simple operation, low investment and operation and maintenance cost, and good practicability and applicability;
the invention can recycle and recycle the heat in the waste heat air generated in the molecular sieve heating desorption and cooling treatment process, achieves the effect of waste heat recovery and has better energy conservation and environmental protection.
Drawings
FIG. 1 is a schematic view of an air purifying apparatus according to the present invention;
FIG. 2 is a schematic diagram of a waste heat recovery system of the air cleaning apparatus according to the present invention;
in the accompanying drawings: 100-a housing; 200-an air inlet fan; 300-molecular sieve purification assembly; 301-molecular sieve; 302-mesh plate; 303-a slit structure; 304-a first rail; 305-a second rail; 400-air outlet assembly; 401-an exhaust fan; 402-an exhaust duct; 500-a transport assembly; 501-a first conveyor belt; 502-a second conveyor belt; 503-a third conveyor belt; 504-fourth conveyor belt; 505-baffles; 506-a third rail; 507-fourth guide rail; 508-a first hot air cabinet; 509-a third fan; 510-a second hot air cabinet; 511-a first cold air cabinet; 512-a second cold air cabinet; 513-a cold air channel; 514-an air inlet; 600-heating assembly; 601-a heater; 602-a first fan; 700-condensing assembly; 701-a condenser; 702-a second fan; 800-a waste heat recovery system; 801-a heat storage water tank; 802-cooling pipes; 803-thermal return path; 804-a first conduit; 805-a second conduit; 806-a third conduit; 807-three-way valve; 808-fourth fan; 809-hot air duct.
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Example 1
Referring to fig. 1, a first embodiment of the VOC exhaust gas treatment and purification device of the present invention includes a housing 100, an air intake fan 200, a molecular sieve purification assembly 300, an air outlet assembly 400, and a molecular sieve 301 circulation assembly disposed in the housing 100, wherein the air intake fan 200 and the air outlet assembly 400 are disposed on two sides of the molecular sieve purification assembly 300 respectively; the air inlet fan 200 is provided with a first air inlet communicated with the outside and a first air outlet for blowing air to the molecular sieve purifying component 300, and the purified air processed by the molecular sieve purifying component 300 is discharged through the air outlet component 400; the molecular sieve purifying component 300 and the molecular sieve 301 circulating component are connected to form a molecular sieve 301 circulating loop for heating, desorbing and cooling the molecular sieve 301.
When the embodiment is implemented, air to be purified is pumped and discharged into the air purifying device through the air inlet fan 200, and the molecular sieve purifying component 300 performs purifying treatment to output purified air; the molecular sieve 301 with the VOC adsorbed in the molecular sieve purifying component 300 is returned to the molecular sieve 301 circulation component for multiplexing by the conveying component 500 after being subjected to heating desorption and condensation treatment. The invention can effectively remove VOC in the air to achieve the effect of purifying waste gas, and the molecular sieve 301 adsorbed with VOC can be reused after being heated and condensed. In addition to the molecular sieve 301 being suitable for the present invention, particles such as activated carbon having adsorption performance and being capable of desorption by heating are also suitable for the present invention.
As shown in fig. 1, the molecular sieve purifying assembly 300 comprises a plurality of layers of mesh plates 302, a crack structure 303 is formed between adjacent mesh plates 302, and the molecular sieve 301 is contained in the crack structure 303; the air flow passes through the molecular sieve purifying component 300, and the molecular sieve 301 adsorbs substances such as VOC, moisture and the like in the air flow, so that the waste gas is purified. Wherein, an air outlet assembly 400 is arranged at one side of the molecular sieve purifying assembly 300, the air outlet assembly 400 comprises an air exhaust fan 401 and an air exhaust pipeline 402, and the air exhaust fan 401 is provided with a second air inlet for receiving purified air and a second air outlet communicated with the air exhaust pipeline 402; the air inlet fan 200, the air outlet fan 401 and the air outlet pipe 402 form an air circulation system. The air-out of the molecular sieve purification assembly 300 is guided out by the air exhaust pipeline 402 under the action of the air exhaust fan 401, and the purification air can be recycled to equipment such as a baking finish house through the position and the structure of the air exhaust pipeline 402, so that the purification air is not discharged through an air exhaust port, and the effect of zero emission is realized.
The molecular sieve 301 can be recycled after absorbing moisture and VOC through heating desorption treatment, and the molecular sieve 301 absorbed with VOC is conveyed to the molecular sieve purifying component 300 after being heated, desorbed and condensed in the embodiment, so that the dynamic replacement of the molecular sieve 301 in the molecular sieve purifying component 300 is realized, and the purifying effect of the molecular sieve 301 is ensured. The specific structure of the molecular sieve 301 circulation assembly is as follows:
as shown in fig. 1, the molecular sieve 301 circulation assembly includes a conveying assembly 500, a heating assembly 600 for heating and desorbing the molecular sieve 301, and a condensing assembly 700 for condensing the molecular sieve 301, wherein the heating assembly 600 and the condensing assembly 700 are both disposed above the conveying assembly 500, the conveying assembly 500 includes an input end disposed below the molecular sieve purification assembly 300 and an output end disposed above the molecular sieve purification assembly 300, the molecular sieve 301 adsorbed with VOC falls onto the conveying assembly 500 from the input end, and after being heated by the heating assembly 600, desorbed and condensed by the condensing assembly 700, falls back into the molecular sieve purification assembly 300 from the output end.
Specifically, a first guide rail 304 is disposed below the molecular sieve purifying assembly 300, the first guide rail 304 is communicated with the crack structure 303, and one end of the first guide rail 304 near the input end is inclined downwards; a second guide rail 305 is disposed above the molecular sieve purifying assembly 300, and the second guide rail 305 is communicated with the crack structure 303 and has one end close to the crack structure 303 inclined downward. The molecular sieve 301 adsorbed with the VOC falls under the action of gravity and is conveyed to the input end along the first guide rail 304 and is conveyed to the upper side of the molecular sieve purifying assembly 300 by the conveying assembly 500, and the molecular sieve 301 falls to the second guide rail 305 from the output end and slides into the molecular sieve purifying assembly 300 along the second guide rail 305, thereby realizing automatic recycling of the molecular sieve 301.
The conveying assembly 500 includes a first conveying belt 501, a second conveying belt 502, a third conveying belt 503, a fourth conveying belt 504 and a conveying belt driving device, one end of the first conveying belt 501 is disposed below the tail end of the first guide rail 304, the other end of the first conveying belt 501 is disposed above one end of the second conveying belt 502, the other end of the second conveying belt 502 is disposed above one end of the third conveying belt 503, the other end of the third conveying belt 503 is disposed above one end of the fourth conveying belt 504, and the other end of the fourth conveying belt 504 is disposed above the start end of the second guide rail 305; the conveyor belt driving device can adopt a motor for driving the four conveyor belts to rotate, but is not limited to the motor; the conveying assembly 500 is formed by a plurality of groups of conveying belts and conveying belt driving devices, and the conveying assembly 500 can be arranged according to different application scenes, so that occupied volume is saved; in this embodiment, the surfaces of the first conveying belt 501, the second conveying belt 502, the third conveying belt 503 and the fourth conveying belt 504 are all provided with a plurality of parallel baffles 505, so as to prevent the molecular sieve 301 from sliding down under the action of gravity and ensure effective conveying. In order to facilitate the transportation of the molecular sieve 301, a first outlet with a narrowed size is disposed at the end of the first guide rail 304 in this embodiment, a third guide rail 506 with a narrowed outlet is disposed between the first conveyor belt 501 and the second conveyor belt 502, a fourth guide rail 507 with a narrowed outlet is disposed between the third conveyor belt 503 and the fourth conveyor belt 504, the molecular sieve 301 falls onto the second conveyor belt 502 from the first conveyor belt 501 through the third guide rail 506, and the molecular sieve 301 is transported onto the third conveyor belt 503 from the second conveyor belt through the fourth guide rail 507. The third guide rail 506 and the fourth guide rail 507 are not only beneficial to conveying the molecular sieve 301, but also play a role in heat insulation and wind resistance.
The heating assembly 600 comprises a heater 601 arranged above the second conveying belt 502 and a first fan 602 arranged above the heater 601, the first conveying belt 501 is arranged in the first hot air cabinet 508, a third fan 509 is arranged above the first conveying belt 501, and the second conveying belt 502 and the heating assembly 600 are arranged in the second hot air cabinet 510; the condensing unit 700 includes a condenser 701 and a second fan 702, the second fan 702 is disposed above the condenser 701, the condenser 701 is disposed above the fourth conveying belt 504, a part of the fourth conveying belt 504 and the condensing unit 700 are disposed in the second cold air cabinet 512, the third conveying belt 503 is disposed in the first cold air cabinet 511, a cold air channel 513 is communicated between the first cold air cabinet 511 and the second cold air cabinet 512, and an air inlet 514 is disposed on a side wall of the second cold air cabinet 512.
In the second hot air cabinet 510, the molecular sieve 301 on the second conveyor belt 502 is purged at a high temperature by the high-temperature air generated by the heater 601 under the blowing action of the first fan 602, the adsorbed and concentrated VOC (volatile organic compounds) of the molecular sieve 301 are combusted at a high temperature to generate carbon dioxide and water, and meanwhile, the water adsorbed by the molecular sieve 301 is desorbed and vaporized at a high temperature; in order to achieve a better desorption effect, the temperature range of the high-temperature air in this embodiment is controlled to be between 350 ℃, the desorbed molecular sieve 301 is conveyed to the first cold air cabinet 511 under the action of the second conveying belt 502, cold air blown from the second cold air cabinet 512 through the cold air channel 513 is subjected to heat exchange in the first cold air cabinet 511 to achieve the effect of primary cooling, the primarily cooled molecular sieve 301 enters the second cold air cabinet 512 under the effect of the third conveying belt 503, cooling air generated by the condenser 701 enters the second cold air cabinet 512 under the blowing effect of the second fan 702 to forcibly cool the molecular sieve 301 entering the second cold air cabinet 512 to below 60 ℃, and the desorbed molecular sieve 301 can play the role of adsorption and concentration again, so that the process is circulated.
Example two
A second embodiment of the VOC exhaust gas treatment purification apparatus of the present invention is similar to the embodiment except that: the embodiment further includes a waste heat recovery system 800 for recovering heat generated in the desorption process of the molecular sieve 301, and compared with the first embodiment, the embodiment has better energy saving and environmental protection.
As shown in fig. 2, the waste heat recovery system 800 includes a heat storage water tank 801 and a cooling pipe disposed in the heat storage water tank 801, one end of the cooling pipe is connected to the bottom of the first hot air cabinet 508, the other end of the cooling pipe is connected to the top of the first hot air cabinet 508, the top of the first hot air cabinet 508 is further communicated with the first cold air cabinet 511, and the second hot air cabinet 510 is provided with a heat return channel 803 communicating the top of the second hot air cabinet 510 and the bottom of the second hot air cabinet 510. Specifically, one end of the cooling pipe is communicated with the bottom of the first hot air cabinet 508 through a first guide pipe 804, the other end of the cooling pipe is communicated with the top of the first hot air cabinet 508 through a second guide pipe 805, and the first cold air cabinet 511 is communicated with the top of the first hot air cabinet 508 through a third guide pipe 806. The second conduit 805 is connected with a three-way valve 807, two interfaces of the three-way valve 807 are respectively connected with the second conduit 805, a fourth fan 808 is arranged at the other interface of the three-way valve 807, and a hot air duct 809 is arranged at an air outlet of the fourth fan 808. In the present embodiment, the cooling tube is a serpentine heat exchange tube, and it should be noted that this is a preferred embodiment for obtaining a high heat exchange efficiency, and is not intended to be limiting.
In the first hot air cabinet 508, under the blowing action of the third fan 509, the residual heat air passing through the molecular sieve 301 on the first conveying belt 501 is led into the heat storage water tank 801 through the first guide pipe 804, and the residual heat air exchanges heat with water in the heat storage water tank 801 through the cooling pipe, so that the residual heat is stored in the heat storage water tank 801, which is the first path of residual heat recovery.
In the second hot air cabinet 510, under the blowing action of the first fan 602, the molecular sieve 301 on the second conveying belt 502 is purged at a high temperature by the high-temperature air, and the hot air enters the second hot air cabinet 510 again through the hot reflux channel 803, and is recycled in this way, which is the second path of waste heat recovery.
In the second cold air cabinet 512, the cooling air generated by the condenser 701 cools the molecular sieve 301 on the fourth conveying belt 504 under the blowing action of the second fan 702, then enters the first cold air cabinet 511 through the cold air channel 513, and the waste heat air enters the first hot air cabinet 508 through the third conduit 806, which is the third waste heat recovery;
under the blowing action of the third fan 509, the waste heat air is led into the heat storage water tank 801, and through a cooling pipe and an adjusting electric ball valve, the waste heat air passing through the second conduit 805 enters the first hot air cabinet 508 again, and the waste heat air is recycled, namely, the fourth-path waste heat recovery;
when the temperature rise operation is needed, the waste heat air is led into the heat storage water tank 801, the electric ball valve is regulated through the cooling pipe 802, so that the waste heat air in the second conduit 805 is discharged by the electric ball valve, and under the action of the fourth fan 808, the waste heat air is discharged by the hot air duct 809, and the fifth waste heat recovery is realized; the recovered waste heat can be used as a heating source for heating and drying operation.
Example III
The embodiment is an embodiment of an air purification method, including an air purification method and a molecular sieve desorption method:
the molecular sieve purifying method comprises the following steps: the air to be purified after the dust removal treatment is pumped and discharged into the molecular sieve purification assembly 300 under the action of the air inlet fan 200; the VOC is adsorbed to obtain purified air as the air to be purified flows through the molecular sieve 301, and the purified air is discharged through the air outlet assembly 400;
molecular sieve desorption method: the molecular sieve 301 with the VOC adsorbed thereon falls down to the first guide rail 304 and is guided to the conveying assembly 500 by the first guide rail 304, and is conveyed by heating, desorption, cooling and cooling during conveyance, and then is returned to the second guide rail 305, and is guided to the molecular sieve purifying assembly 300 for reuse by the second guide rail 305.
Wherein, in order to realize better desorption effect, the high-temperature air temperature range adopted in the molecular sieve heating desorption process is controlled to be between 350 ℃; in order to endow the molecular sieve with better adsorption performance again, the cooling air generated by the condenser 701 enters the second cold air cabinet 512 under the blowing action of the second fan 702, forcibly cools the molecular sieve 301 entering the second cold air cabinet 512 to below 60 ℃, and then is returned to the molecular sieve purifying assembly 300.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (4)
1. The utility model provides an air purification device which characterized in that includes casing (100) and locates air inlet fan (200), molecular sieve purification subassembly (300), air-out subassembly (400), molecular sieve (301) circulation subassembly of casing (100):
the air inlet fan (200) and the air outlet assembly (400) are respectively arranged at two sides of the molecular sieve purifying assembly (300); the air inlet fan (200) is provided with a first air inlet communicated with the outside and a first air outlet for blowing air to the molecular sieve purification assembly (300), and the purified air treated by the molecular sieve purification assembly (300) is discharged through the air outlet assembly (400); the molecular sieve purifying component (300) and the molecular sieve (301) circulating component are connected to form a molecular sieve (301) circulating loop for heating, desorbing, cooling and lowering the temperature of the molecular sieve (301);
the molecular sieve (301) circulation assembly comprises a conveying assembly (500), a heating assembly (600) for heating and desorbing the molecular sieve (301) and a condensing assembly (700) for condensing the molecular sieve (301), wherein the heating assembly (600) and the condensing assembly (700) are arranged above the conveying assembly (500), the conveying assembly (500) comprises an input end arranged below the molecular sieve purification assembly (300) and an output end arranged above the molecular sieve purification assembly (300), the molecular sieve (301) adsorbed with VOC falls onto the conveying assembly (500) from the input end, and falls back into the molecular sieve purification assembly (300) from the output end after being heated, desorbed and condensed by the heating assembly (600);
the conveying assembly (500) comprises a first conveying belt (501), a second conveying belt (502), a third conveying belt (503), a fourth conveying belt (504) and a conveying belt driving device, wherein a plurality of baffles which are arranged in parallel are arranged on the surfaces of the first conveying belt (501), the second conveying belt (502), the third conveying belt (503) and the fourth conveying belt (504); one end of the first conveying belt (501) is arranged below the tail end of the first guide rail (304), the other end of the first conveying belt (501) is arranged above one end of the second conveying belt (502), the other end of the second conveying belt (502) is arranged above one end of the third conveying belt (503), a third guide rail (506) with a narrowed outlet is arranged between the first conveying belt (501) and the second conveying belt (502), the other end of the third conveying belt (503) is arranged above one end of the fourth conveying belt (504), the other end of the fourth conveying belt (504) is arranged above the beginning of the second guide rail (305), and a fourth guide rail (507) with a narrowed outlet is arranged between the third conveying belt (503) and the fourth conveying belt (504);
the heating assembly (600) comprises a heater (601) arranged above the second conveying belt (502) and a first fan (602) arranged above the heater (601), the first conveying belt (501) is arranged in the first hot air cabinet (508), and the second conveying belt (502) and the heating assembly (600) are arranged in the second hot air cabinet (510);
the condensing assembly (700) comprises a condenser (701) and a second fan (702), the second fan (702) is arranged above the condenser (701), the condenser (701) is arranged above a fourth conveying belt (504), the fourth conveying belt (504) and the condensing assembly (700) are arranged in a second cold air cabinet (512), the third conveying belt (503) is arranged in a first cold air cabinet (511), and a cold air channel (513) is communicated between the first cold air cabinet (511) and the second cold air cabinet (512);
the heat recovery system (800) comprises a heat storage water tank (801) and a cooling pipe (802) arranged in the heat storage water tank (801), one end of the cooling pipe (802) is connected to the bottom of the first hot air cabinet (508), the other end of the cooling pipe (802) is connected to the top of the first hot air cabinet (508), the top of the first hot air cabinet (508) is also communicated with the first cold air cabinet (511), and the second hot air cabinet (510) is provided with a heat reflux channel (803) communicated with the top of the second hot air cabinet (510) and the bottom of the second hot air cabinet (510);
one end of a cooling pipe (802) is communicated with the bottom of the first hot air cabinet (508) through a first guide pipe (804), the other end of the cooling pipe is communicated with the top of the first hot air cabinet (508) through a second guide pipe (805), and the first cold air cabinet (511) is communicated with the top of the first hot air cabinet (508) through a third guide pipe (806); wherein, be connected with three-way valve (807) on second pipe (805), two of them interfaces of three-way valve (807) are connected with second pipe (805) respectively, and another interface department of three-way valve (807) is equipped with fourth fan (808), is provided with hot air duct (809) in the air outlet department of fourth fan (808).
2. The air purification apparatus of claim 1, wherein the molecular sieve purification assembly (300) comprises a plurality of mesh plates (302), a slit structure (303) is formed between adjacent mesh plates (302), and the molecular sieve (301) is contained in the slit structure (303).
3. The air purification device according to claim 1, wherein a first guide rail (304) is arranged below the molecular sieve purification assembly (300), the first guide rail (304) is communicated with the crack structure (303), and one end of the first guide rail (304) close to the input end is inclined downwards; the molecular sieve purifying component (300) is provided with a second guide rail (305) above, and the second guide rail (305) is communicated with the crack structure (303) and one end close to the crack structure (303) is inclined downwards.
4. The air purification device according to claim 1, wherein the air outlet assembly (400) comprises an air exhaust fan (401) and an air exhaust pipeline (402), and the air exhaust fan (401) is provided with a second air inlet for receiving purified air and a second air outlet communicated with the air exhaust pipeline (402); the air inlet fan (200), the air exhaust fan (401) and the air exhaust pipeline (402) form an air circulation system.
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| CN110314491A (en) * | 2019-07-04 | 2019-10-11 | 广东澄宇实业有限公司 | A kind of VOC exhaust gas purification device and the combined padding and drying system with it |
| CN115155242B (en) * | 2022-08-04 | 2023-07-04 | 徐州龙兴泰能源科技有限公司 | Recovery unit is used in synthetic ammonia production |
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