WO2022057347A1 - 挥发性有机物吸附净化与催化再生一体化装置 - Google Patents

挥发性有机物吸附净化与催化再生一体化装置 Download PDF

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Publication number
WO2022057347A1
WO2022057347A1 PCT/CN2021/100607 CN2021100607W WO2022057347A1 WO 2022057347 A1 WO2022057347 A1 WO 2022057347A1 CN 2021100607 W CN2021100607 W CN 2021100607W WO 2022057347 A1 WO2022057347 A1 WO 2022057347A1
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filter
adsorption
regeneration
volatile organic
catalytic
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PCT/CN2021/100607
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English (en)
French (fr)
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石爱军
聂磊
何万清
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北京市环境保护科学研究院
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Priority to US17/617,816 priority Critical patent/US20230294034A1/en
Publication of WO2022057347A1 publication Critical patent/WO2022057347A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—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
    • 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
    • B01D53/0454—Controlling adsorption
    • 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
    • B01D53/346—Controlling the process
    • 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
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8678—Removing components of undefined structure
    • B01D53/8687—Organic components
    • 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
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/063—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating electric heating
    • 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
    • F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
    • 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
    • B01D2253/102—Carbon
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • 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
    • B01D2257/702—Hydrocarbons
    • B01D2257/7022—Aliphatic hydrocarbons
    • 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
    • B01D2257/702—Hydrocarbons
    • B01D2257/7027—Aromatic hydrocarbons
    • 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
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • 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
    • 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
    • B01D53/81—Solid phase processes
    • B01D53/82—Solid phase processes with stationary reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes
    • 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

Definitions

  • the invention relates to the technical field of exhaust gas purification, in particular to an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds.
  • VOCs volatile organic compounds
  • a vapor pressure greater than or equal to 0.01KPa at 20°C From the perspective of air pollution prevention and control, it refers to an organic compound that participates in atmospheric photochemical reactions, or is measured according to prescribed methods. Or accounting for identified organic compounds.
  • the existing volatile organic compound prevention and control devices are mostly the series integration of different purification technologies such as pyrolysis, adsorption, and photocatalysis.
  • the route has the technical problems of large volume, large pressure drop, difficult on-site regeneration technology, and high operation and maintenance cost.
  • the purpose of the present invention is to provide an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds, so as to alleviate the large volume caused by the segmented combination of volatile organic compounds prevention and control devices or the technical route of split regeneration in the prior art, and the on-site regeneration Technical difficulties and high operation and maintenance costs.
  • the invention provides an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds, comprising: a filter adsorption coupling filter element, a catalytic combustion regeneration box and a casing;
  • the housing includes a filter inner cavity and a combustion inner cavity that are connected in sequence, the housing is used for airtight circulation of volatile organic waste gas, the filter adsorption coupling filter element is arranged in the filter inner cavity, and the filter adsorption coupling filter element It is used for adsorption and filtration of volatile organic waste gas, the catalytic combustion regeneration box is located in the combustion inner cavity, and the catalytic combustion regeneration box is used for thermal desorption regeneration of the filter adsorption coupling filter element, and for the volatilization of the thermally desorbed Catalytic combustion purification of sexual organic waste gas.
  • the housing further includes an air inlet and an air outlet;
  • the air inlet is communicated with the filter inner cavity, the air inlet is used to transport the received volatile organic waste gas into the filter inner cavity, and the air outlet is communicated with the combustion inner cavity, so The air outlet is used to discharge the purified gas flowing through the filter-adsorption coupling filter element and the catalytic combustion regeneration box.
  • the catalytic combustion regeneration box includes a box body, a circulating fan and a regeneration mechanism
  • the regeneration mechanism is located in the box, a catalyst is arranged in the regeneration mechanism, and the regeneration mechanism is used to heat the catalyst and the volatile organic waste gas, so as to perform thermal desorption regeneration of the filter adsorption coupling filter element through the heated volatile organic waste gas , and the volatile organic waste gas is catalytically combusted and decomposed by the heated catalyst;
  • the circulating fan is located outside the casing, and the circulating fan is communicated with the inside of the box, and is used to transport the desorbed volatile organic waste gas into the box.
  • the regeneration mechanism includes an electric heating mechanism and a catalytic combustion section
  • the electric heating mechanism and the catalytic combustion section are arranged in series at intervals, and the electric heating mechanism is used for heating the catalytic combustion section.
  • the catalytic combustion section includes multiple catalytic combustion layers
  • An electric heating mechanism is arranged between any two of the catalytic combustion layers
  • the catalyst is coated on the outside of the catalytic combustion layer.
  • it also includes a one-way valve
  • the one-way valve is located at the outlet of the box, and the one-way valve is used to limit the conveying direction of the catalytic combustion regeneration box to the filter-adsorption coupling filter element.
  • it also includes a fireproof heat exchange section
  • the fireproof heat exchange section is located inside the box, and the fireproof heat exchange section is located between the one-way valve and the catalytic combustion section.
  • the filter and adsorption coupling filter element comprises a filter element body and an adsorption and filtering mechanism
  • the adsorption filtering mechanism is arranged inside the filter element main body, and the adsorption filtering mechanism is used for adsorbing and filtering volatile organic waste gas;
  • the adsorption filtering mechanism comprises a first fixed net, an adsorption filter layer and a second fixed net which are connected in sequence; the adsorption filter layer is located between the first fixed net and the second fixed net.
  • the filter inner cavity includes a first inner cavity and a second inner cavity that communicate with each other
  • the housing includes an air inlet and an air outlet
  • the inlet of the first inner cavity is connected to the second inner cavity.
  • the air inlet is in communication with the air outlet
  • the outlet of the second inner cavity is in communication with the air outlet;
  • the housing is provided with a plurality of filter element installation holes corresponding to the first inner cavity, the filter adsorption coupling filter element is provided with a plurality of, and the filter adsorption coupling filter element is installed on the filter element installation in a one-to-one correspondence. inside the hole, so that the volatile organic compounds to be purified enter from the air inlet and pass through a plurality of the filtration, adsorption and coupling filter elements, and then flow through the second inner cavity and be discharged through the air outlet.
  • control device In a preferred embodiment of the present invention, it also includes a control device, a differential pressure detection device, a catalytic temperature detection device, a flue gas temperature detection device, and an alarm device;
  • the differential pressure detection device, the catalytic temperature detection device, the flue gas temperature detection device and the alarm device are respectively connected with the control device by electrical signals, and the differential pressure detection device is arranged in the filter inner cavity and located in the The air outlet end of the filter and adsorption coupling filter element is used to detect and output the signal of the pressure drop difference in the filter inner cavity to the control device.
  • the flue gas temperature detection device is arranged at the air outlet end of the filter inner cavity and is used to measure the exhaust gas temperature, and transmit the exhaust gas temperature information to the control device
  • the catalytic temperature detection device is arranged at the gas outlet end of the combustion chamber, used to measure the catalyst temperature, and transmit the catalyst temperature information to the control device ;
  • the control device is respectively connected with the catalytic combustion regeneration box and the alarm device for electrical signals, and the control device is configured to control the Status of the catalytic combustion regeneration tank and the alarm device.
  • the integrated device for adsorption purification and catalytic regeneration of volatile organic compounds includes: a filter adsorption coupling filter element, a catalytic combustion regeneration box and a casing; the casing includes a filtering inner cavity and a combustion inner cavity which are connected in sequence, and the casing is used for volatilization
  • the airtight circulation of volatile organic waste gas, the filtration and adsorption coupling filter element is arranged in the filter cavity, and the catalytic combustion regeneration box is located in the combustion cavity.
  • the catalytic combustion regeneration box is used to regenerate the filter adsorption coupling filter element by thermal desorption, and the volatile organic waste gas obtained by thermal desorption is subjected to catalytic combustion purification; the high-density synergistic purification integration of the two technologies is realized, with compact structure and purification efficiency.
  • the technical problems of difficult regeneration technology and high operation and maintenance cost are examples of difficult regeneration technology and high operation and maintenance cost.
  • FIG. 1 is a schematic diagram of the overall structure of an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the internal structure of an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds provided by an embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional structure diagram of the integrated device for adsorption purification and catalytic regeneration of volatile organic compounds provided in the embodiment of FIG. 2 in the direction of A-A;
  • FIG. 4 is a schematic cross-sectional structural diagram of another embodiment along the A-A direction of the integrated device for adsorption, purification and catalytic regeneration of volatile organic compounds provided in the embodiment of FIG. 2;
  • FIG. 5 is a schematic cross-sectional structural diagram of the integrated device for adsorption purification and catalytic regeneration of volatile organic compounds in the direction B-B provided in the embodiment of FIG. 2;
  • FIG. 6 is a schematic structural diagram of a filtration and adsorption coupling filter element of an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds provided by an embodiment of the present invention.
  • Icon 100-filter adsorption coupling filter element; 101-filter element body; 102-adsorption filter mechanism; 112-first fixed net; 122-adsorption filter layer; 132-second fixed net; 200-catalytic combustion regeneration box; 201-box body; 202-circulation fan; 203-regeneration mechanism; 213-electric heating mechanism; 223-catalytic combustion section; 204-check valve; 205-fireproof heat exchange section; 300-shell; 301-filter inner cavity; 311- 321-second inner cavity; 302-air inlet; 303-air outlet; 400-control device.
  • horizontal does not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined.
  • horizontal only means that its direction is more horizontal than “vertical”, it does not mean that the structure must be completely horizontal, but can be slightly inclined.
  • the terms “arranged”, “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • the specific meanings of the above terms in the present invention can be understood in specific situations.
  • VOCs refers to organic compounds that participate in atmospheric photochemical reactions, or organic compounds that are measured or determined according to prescribed methods.
  • VOCs include non-methane hydrocarbons (alkanes, alkenes, alkynes, aromatic hydrocarbons, etc.), oxygen-containing organics (aldehydes, ketones, alcohols, ethers, etc.), chlorine-containing organics, nitrogen-containing organics, sulfur-containing organics, etc. It is an important precursor for the formation of ozone (O3) and fine particulate matter (PM2.5) pollution.
  • O3 ozone
  • PM2.5 fine particulate matter
  • VOCs volatile organic compounds
  • an integrated device for adsorption purification and catalytic regeneration of volatile organic compounds includes: a filter adsorption coupling filter element 100 , a catalytic combustion regeneration box 200 and a casing 300 ; the casing 300 includes The filter inner cavity 301 and the combustion inner cavity are connected in sequence, the housing 300 is used for the airtight circulation of volatile organic waste gas, the filter adsorption coupling filter element 100 is arranged in the filter inner cavity 301, and the filter adsorption coupling filter element 100 is used for volatile organic waste gas.
  • the catalytic combustion regeneration box 200 is located in the combustion inner cavity.
  • the catalytic combustion regeneration box 200 is used for thermal decomposition regeneration of the filter adsorption coupling filter element 100, and catalytic combustion purification of the volatile organic waste gas obtained by thermal decomposition.
  • the volatile organic compound adsorption purification and catalytic regeneration integrated device is suitable for the purification treatment of volatile organic compound exhaust gas with low concentration, large air volume, and intermittent discharge; wherein, the volatile organic compound adsorption purification and catalytic regeneration
  • the integrated regeneration device has two working conditions, one is to use the filter adsorption coupling filter element 100 to adsorb VOCs, and then use the catalytic combustion regeneration box 200 to heat the adsorption filter layer 122 of the filter adsorption coupling filter element 100 in the interval when the exhaust gas stops discharging.
  • Analytical regeneration, and catalytic combustion purification of volatile organic waste gas from thermal desorption realizes the high-density synergistic purification integration of the two technologies, and realizes the integrated device of adsorption and catalytic regeneration.
  • the housing 300 is used as an accommodating space, wherein the filter inner cavity 301 and the combustion inner cavity are used as spaces for storing the filter adsorption coupling filter element 100 and the catalytic combustion regeneration box 200, and the volatile organic waste gas is used to circulate the volatile organic waste inside the housing 300, Therefore, the volatile organic compounds can be adsorbed by the filter adsorption coupling filter element 100, and the catalytic combustion regeneration box 200 can be turned on when the exhaust gas stops discharging intermittently to perform thermal catalytic combustion purification of the volatile organic compound exhaust gas.
  • the filter and adsorption coupling filter element 100 includes a filter element body 101 and an adsorption filter mechanism 102; the adsorption filter mechanism 102 is arranged inside the filter element body 101, and the adsorption filter mechanism 102 is used for absorbing and filtering volatile organic waste gas.
  • the adsorption filter mechanism 102 includes the first fixed net 112, the adsorption filter layer 122 and the second fixed net 132 connected in sequence; the adsorption filter layer 122 is located between the first fixed net 112 and the second fixed net 132.
  • the filter element body 101 includes a porous catalytic sleeve; the porous catalytic sleeve is arranged in a circular or circular folded structure, and the porosity of the porous catalytic sleeve is greater than or equal to 30%. Among them, the porosity of the porous catalytic sleeve is generally not less than 30%.
  • the base material of the porous catalytic sleeve can be made of porous heat-resistant materials such as foamed ceramics, honeycomb ceramics, microporous metal honeycomb panels, and glass fibers.
  • the first fixed net 112 is an inner fixed net, which is used to fix the adsorption filter mechanism 102, and the second fixed net 132 and the first fixed net 112 clamp the adsorption filter mechanism 102 inside, and at the same time,
  • the first fixed net 112 and the second fixed net 132 are both provided with through holes, so that the volatile organic waste gas is adsorbed by the adsorption filter mechanism 102 after passing through.
  • the adsorption filtering mechanism 102 includes an activated carbon filter layer or a molecular sieve filter layer; the activated carbon filter layer includes at least one of granular activated carbon, honeycomb activated carbon, hollow columnar activated carbon and activated carbon fiber filter cotton; molecular sieve filter The layer includes at least one of particulate molecular sieves, cellular molecular sieves, and hollow columnar molecular sieves.
  • the filter layer of the adsorption filter mechanism 102 may be provided with multiple layers, and the filter layer of the multi-layer adsorption filter mechanism 102 may use filter layers of different materials, so that VOCs can be absorbed more comprehensively.
  • the present invention also includes a handle cover plate and an end cover sealing plate arranged oppositely;
  • the cover and sealing plates are respectively connected with the filter element main body 101 .
  • the integrated device for adsorption purification and catalytic regeneration of volatile organic compounds includes: a filter adsorption coupling filter element 100, a catalytic combustion regeneration box 200 and a casing 300; the casing 300 includes a filter inner cavity 301 and a combustion inner cavity that are connected in sequence , the housing 300 is used for the airtight circulation of volatile organic waste gas, the filter adsorption coupling filter element 100 is arranged in the filter inner cavity 301, and the catalytic combustion regeneration box 200 is located in the combustion inner cavity.
  • the high-density synergistic purification integration has the technical effects of compact structure, high purification efficiency, recyclability, low secondary pollution, low cost and good economic benefits, and alleviates the existing technology in the prevention and control of volatile organic compounds.
  • the combined or split regeneration technology route causes technical problems such as large volume, difficult on-site regeneration technology, and high operation and maintenance costs.
  • the housing 300 further includes an air inlet 302 and an air outlet 303; the air inlet 302 communicates with the filter inner cavity 301, and the air inlet 302 It is used to transport the received volatile organic waste gas into the filter cavity 301, and the air outlet 303 is communicated with the combustion cavity. discharge.
  • the interior of the housing 300 is used as the accommodating space for circulating volatile organic waste gas.
  • the filter inner cavity 301 for installing the filter adsorption coupling filter element 100 and the combustion inner cavity for installing the catalytic combustion regeneration box 200 are distinguished by using the distinguishing area, and the catalytic combustion regeneration box 200 is set at the position of the air outlet 303, and the filter adsorption coupling filter element 100 is set at the position of the air outlet 303, so that when the volatile When the organic waste gas enters the housing 300 , it will first be adsorbed by the filter-adsorption coupling filter element 100 .
  • the positions of the combustion inner cavity and the filter inner cavity 301 can also be in other ways, for example, the combustion inner cavity is arranged in the middle position of the filter inner cavity 301, so that the catalytic combustion regeneration box 200 can be located in a plurality of filter adsorption coupling filter elements 100 In the middle position, the high temperature gas output from the catalytic combustion regeneration box 200 can perform thermal desorption regeneration on the filter adsorption coupling filter element 100 .
  • the filter inner cavity 301 includes a first inner cavity 311 and a second inner cavity 321 that communicate with each other
  • the housing 300 includes an air inlet 302 and an air outlet 303, and the inlet of the first inner cavity 311 is connected to the The air inlet 302 communicates with the air inlet 302, and the outlet of the second inner cavity 321 communicates with the air outlet 303;
  • the housing 300 is provided with a plurality of filter element installation holes corresponding to the first inner cavity 311, and the filter adsorption coupling filter element 100 is provided with a plurality of holes,
  • the filter adsorption coupling filter element 100 is installed in the filter element installation hole one by one, so that the volatile organic matter to be purified enters from the air inlet 302 and passes through the plurality of filter adsorption coupling filter elements 100, and then flows through the second inner cavity 321 through the air outlet. 303 discharge.
  • the first inner cavity 311 of the housing 300 is provided with a plurality of filter element installation holes, and the filter element installation holes are provided with a filter element guide rail to filter the adsorption coupling filter element 100. Use the filter guide rail to install inside the filter element mounting hole.
  • the first inner cavity 311 is used as the accommodation space of the filter element installation hole, and the other area of the first inner cavity 311 is the second inner cavity 321, the second inner cavity 321 is communicated with the combustion inner cavity, and the second inner cavity 321 is in the first inner cavity 311.
  • the second inner cavity 321 is used to circulate the adsorbed gas;
  • the second inner cavity 321 is used for circulating air at this time.
  • a smoke check valve may be provided at the position of the air inlet 302, and an electric exhaust valve may be provided at the position of the air outlet 303; wherein, the smoke check valve may be a smoke exhaust fire damper.
  • the catalytic combustion regeneration box 200 includes a box body 201, a circulating fan 202 and a regeneration mechanism 203; the regeneration mechanism 203 is located in the box body 201, and a catalyst is arranged in the regeneration mechanism 203.
  • the catalyst and the volatile organic waste gas are heated to perform thermal decomposition and regeneration of the filter adsorption coupling filter element 100 through the heated volatile organic waste gas, and the volatile organic waste gas is catalytically combusted and decomposed by the heated catalyst;
  • the circulating fan 202 is located in the casing 300 Outside, the circulating fan 202 communicates with the inside of the box body 201 , and is used to transport the desorbed volatile organic waste gas into the box body 201 .
  • the box body 201 can be made of steel or stainless steel; wherein, the circulating fan 202 is used for circulating transport between the box body 201 and the filter-adsorption coupling filter element 100 .
  • the regeneration mechanism 203 includes an electric heating mechanism 213 and a catalytic combustion section 223 ;
  • the catalytic combustion section 223 includes multiple catalytic combustion layers; an electric heating mechanism 213 is arranged between any two catalytic combustion layers; the catalyst is coated on the outside of the catalytic combustion layers.
  • the catalytic combustion layer can use foam ceramics and honeycomb ceramics as the carrier, and a VOCs low-temperature combustion catalyst is coated on the carrier. °C-400°C; under the action of the catalyst, the VOCs decomposed by regeneration heat are decomposed into CO2 and H2O under the low temperature condition of 200°C-400°C, which can not only purify the hydrocarbon waste gas, but also remove the odor.
  • the electric heating mechanism 213 may use electric heating wires.
  • the regeneration mechanism 203 is used to heat the catalyst and the exhaust gas.
  • the circulating air can be heated, the hot air can be used to thermally decompose the filter adsorption coupling filter element 100, and the catalyst can be heated to make It reaches the catalytic combustion temperature.
  • the heating will be automatically stopped, and the thermal decomposition temperature will be gradually increased by using the combustion heat of the VOCs in the exhaust gas.
  • the heating temperature of the hot air can be about 100 °C, and the maximum temperature is not more than 120 °C; when the filter adsorption coupling filter element 100 uses molecular sieve as the filter element of the adsorbent, the heating temperature of the hot air can be about 120 °C, and the maximum temperature does not exceed 150 °C .
  • the present invention also includes a one-way valve 204; the one-way valve 204 is located at the outlet of the box 201, and the one-way valve 204 is used to limit the conveying direction of the catalytic combustion regeneration box 200 to the filter-adsorption coupling filter element 100 .
  • the one-way valve 204 can be a wing valve, and the valve plate of the wing valve can be one-way sealed by the action of gravity and negative pressure, thereby limiting the conveying direction of the catalytic combustion regeneration box 200 to the filter-adsorption coupling filter element 100 .
  • a fireproof heat exchange section 205 is also included; the fireproof heat exchange section 205 is located inside the box 201 , and the fireproof heat exchange section 205 is located between the one-way valve 204 and the catalytic combustion section 223 .
  • the fire-proof heat exchange section 205 may adopt a tubular heat exchange and insulation layer.
  • the desorption regeneration cycle is: the outlet of the circulating fan 202 ⁇ the regeneration mechanism 203 (VOCs purification) ⁇ the fireproof heat exchange section 205 ⁇ One-way valve 204 ⁇ filter inner cavity 301 in housing 300 ⁇ filter adsorption coupling filter element 100 (VOCs desorption) ⁇ inlet of circulating fan 202 .
  • an exhaust fan is also included.
  • the exhaust fan is arranged inside the casing 300.
  • the exhaust fan can ensure that the volatile organic compound gas to be purified follows the output direction of the exhaust fan along the air inlet. 302 is transported in the direction of the air outlet 303 .
  • a control device 400 also includes a control device 400, a differential pressure detection device, a catalytic temperature detection device, a flue gas temperature detection device, and an alarm device; a pressure differential detection device, a catalytic temperature detection device, and a flue gas temperature detection device and the alarm device are respectively connected with the control device 400 by electrical signals, and the pressure difference detection device is arranged in the filter inner cavity 301 and is located at the air outlet end of the filter adsorption coupling filter element 100 for detecting and outputting the pressure drop in the filter cavity 301 to the control device 400
  • the flue gas temperature detection device is arranged at the outlet end of the filter inner cavity 301 to measure the exhaust gas temperature and transmit the exhaust gas temperature information to the control device 400
  • the catalytic temperature detection device is arranged at the outlet end of the combustion inner chamber , used to measure the catalyst temperature, and transmit the catalyst temperature information to the control device 400;
  • the control device 400 is respectively connected with the catalytic combustion regeneration box 200 and the alarm device for electrical signals, and the control device
  • the control device 400 when the temperature of the exhaust gas is greater than 150°C, the control device 400 will turn on the exhaust fan to discharge the high-temperature regeneration exhaust gas to prevent the ignition of the activated carbon catalyst and avoid fire accidents; And the signal output by the flue gas temperature detection device respectively controls the state of the exhaust fan or the alarm device.
  • control device 400 can be of various types, such as: MCU, computer, PLC controller, etc.
  • the control device 400 is an MCU.
  • Microcontroller Unit also known as single-chip microcomputer or single-chip microcomputer, is to appropriately reduce the frequency and specifications of the central processing unit, and integrate memory, counter, USB, A/D conversion, UART, PLC, DMA.
  • Other peripheral interfaces, and even the LCD drive circuit are integrated on a single chip to form a chip-level computer, which can be controlled in different combinations for different applications.
  • control device 400 adopts the STM32F103C8T6 single-chip microcomputer, which has strong processing capability, abundant internal resources and stable operation.
  • the alarm device may use an audible and photoelectric alarm device.
  • the differential pressure detection device may use a differential pressure sensor, and both the catalytic temperature detection device and the flue gas temperature detection device may use a temperature sensor.
  • the integrated device for adsorption purification and catalytic regeneration of volatile organic compounds has two working conditions, time-sharing cycle:
  • Working condition 1 VOCs adsorption and purification working condition
  • the exhaust fan is normally turned on, the flue gas check valve in front of the first inner cavity 311 and the electric exhaust valve of the air outlet 303 are opened, and the purified exhaust gas passes through the air inlets 302,
  • the first inner cavity 311 , the filter and adsorption coupling filter element 100 , the second inner cavity 321 , and the air outlet 303 are discharged through the air outlet 303 .
  • Working condition 2 Desorption catalytic regeneration state, at this time the exhaust fan is turned off or a small air volume is turned on, the flue gas check valve is closed or slightly opened, the electric exhaust valve is slightly opened or closed, the circulating fan 202 is turned on, and the electric heating mechanism 213 is turned on.
  • the air volume in the thermal catalytic combustion section 223 and the box body 201 can be 5% to 20% of the working air volume.
  • the circulating air is purified by catalytic combustion to generate heat to reheat the air in the housing 300, gradually heat up and desorb, and utilize the heat.
  • the air desorbs the VOCs adsorbed by the filter-adsorption coupling filter element 100, and after multiple cycles of purification in the housing 300, the on-site regeneration of the filter-adsorption coupling filter element 100 is realized, and the desorbed exhaust gas is discharged after purification.

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Abstract

一种挥发性有机物吸附净化与催化再生一体化装置，包括过滤吸附耦合滤芯（100）、催化燃烧再生箱（200）和壳体（300）；壳体（300）包括依次连通的过滤内腔（301）和燃烧内腔，通过利用过滤吸附耦合滤芯（100）对挥发性有机物废气进行吸附过滤，并且在脱附再生工况下，利用催化燃烧再生箱（200）对过滤吸附耦合滤芯（100）进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化。

Description

挥发性有机物吸附净化与催化再生一体化装置 技术领域
本发明涉及废气净化技术领域，尤其是涉及一种挥发性有机物吸附净化与催化再生一体化装置。
背景技术
挥发性有机物(简称VOCs)的物理学定义是在20℃条件下蒸气压大于或等于0.01KPa有机化合物，从大气污染防治角度看，是指参与大气光化学反应的有机化合物，或者根据规定的方法测量或核算确定的有机化合物。
为提高VOCs净化效率，现有的挥发性有机物防治装置多为热解法、吸附法、光催化法等不同净化技术的串联集成，建成的VOCs吸附净化装置多采用分段组合或分体再生技术路线，存在体积大，压降大，现场再生技术难、运行维护成本高等的技术问题。
发明内容
本发明的目的在于提供一种挥发性有机物吸附净化与催化再生一体化装置，以缓解现有技术中存在的挥发性有机物的防治装置分段组合或分体再生技术路线造成的体积大，现场再生技术难、运行维护成本高的技术问题。
本发明提供的一种挥发性有机物吸附净化与催化再生一体化装置，包括：过滤吸附耦合滤芯、催化燃烧再生箱和壳体；
所述壳体包括依次连通的过滤内腔和燃烧内腔，所述壳体用挥发性有机物废气的密闭流通，所述过滤吸附耦合滤芯设置于所述过滤内腔内，所述过滤吸附耦合滤芯用于对挥发性有机物废气进行吸附过滤，所述催化燃烧再生箱位于所述燃烧内腔内，所述催化燃烧再生箱用于对过滤吸附耦合滤芯进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化。
在本发明较佳的实施例中，所述壳体还包括进气口和出气口；
所述进气口与所述过滤内腔连通，所述进气口用于将接收到的挥发性 有机物废气输送至所述过滤内腔内，所述出气口与所述燃烧内腔连通，所述出气口用于将流经所述过滤吸附耦合滤芯和所述催化燃烧再生箱净化后的气体排出。
在本发明较佳的实施例中，所述催化燃烧再生箱包括箱体、循环风机和再生机构；
所述再生机构位于所述箱体内，所述再生机构内设置有催化剂，所述再生机构用于加热催化剂和挥发性有机物废气，以通过加热后挥发性有机物废气对过滤吸附耦合滤芯进行热解析再生，并通过加热后的催化剂对挥发性有机物废气催化燃烧分解；
所述循环风机位于所述壳体的外部，所述循环风机与所述箱体内部连通，用于将脱附后的挥发性有机物废气输送至所述箱体内。
在本发明较佳的实施例中，所述再生机构包括电加热机构和催化燃烧段；
所述电加热机构和所述催化燃烧段呈间隔串联设置，所述电加热机构用于加热所述催化燃烧段。
在本发明较佳的实施例中，所述催化燃烧段包括多层催化燃烧层；
任意两个所述催化燃烧层之间布置有电加热机构；
所述催化剂涂覆于所述催化燃烧层的外部。
在本发明较佳的实施例中，还包括单向阀；
所述单向阀位于所述箱体的出口位置，所述单向阀用于限定所述催化燃烧再生箱向所述过滤吸附耦合滤芯的输送方向。
在本发明较佳的实施例中，还包括防火换热段；
所述防火换热段位于所述箱体内部，且所述防火换热段位于所述单向阀和所述催化燃烧段之间。
在本发明较佳的实施例中，所述过滤吸附耦合滤芯包括滤芯主体和吸附过滤机构；
所述吸附过滤机构设置于所述滤芯主体内部，所述吸附过滤机构用于对挥发性有机物废气进行吸附过滤；
所述吸附过滤机构包括依次连接的第一固定网、吸附滤层和第二固定网；所述吸附滤层位于所述第一固定网和第二固定网之间。
在本发明较佳的实施例中，所述过滤内腔包括连通的第一内腔和第二内腔，所述壳体包括进气口和出气口，所述第一内腔的进口与所述进气口连通，所述第二内腔的出口与所述出气口连通；
所述壳体内开设有多个与所述第一内腔相对应的滤芯安装孔，所述过滤吸附耦合滤芯设置有多个，且所述过滤吸附耦合滤芯一一对应地安装于所述滤芯安装孔内，以使待净化的挥发性有机物从所述进气口进入经过多个所述过滤吸附耦合滤芯后流经所述第二内腔经所述出气口排出。
在本发明较佳的实施例中，还包括控制装置、压差检测装置、催化温度检测装置、烟气温度检测装置和警报装置；
所述压差检测装置、催化温度检测装置、烟气温度检测装置和所述警报装置分别与所述控制装置电信号连接，所述压差检测装置设置于所述过滤内腔内且位于所述过滤吸附耦合滤芯的出气端，用于检测并向所述控制装置输出所述过滤内腔内压降差的信号，所述烟气温度检测装置设置于过滤内腔的出气端，用于测量废气温度，并将此废气温度信息传输至所述控制装置处，所述催化温度检测装置设置于燃烧内腔的出气端，用于测量催化剂温度，并将此催化剂温度信息传输至所述控制装置处；
所述控制装置分别与所述催化燃烧再生箱和所述警报装置电信号连接，所述控制装置配置成根据所述过滤内腔内压降差的信号和所述废气温度信息，对应控制所述催化燃烧再生箱及所述警报装置的状态。
本发明提供的挥发性有机物吸附净化与催化再生一体化装置，包括：过滤吸附耦合滤芯、催化燃烧再生箱和壳体；壳体包括依次连通的过滤内腔和燃烧内腔，壳体用于挥发性有机物废气的密闭流通，过滤吸附耦合滤芯设置于过滤内腔内，催化燃烧再生箱位于燃烧内腔内，通过利用过滤吸附耦合滤芯对挥发性有机物废气进行吸附过滤，并且在脱附再生工况下，利用催化燃烧再生箱对过滤吸附耦合滤芯进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化；实现了两种技术的高密度协同净化集成，具有结构紧凑、净化效率高、可循环利用、二次污染小、成本低、经济效益好的技术效果，缓解了现有技术中存在的挥发性有机物的防治装置分段组合或分体再生技术路线造成的体积大，现场再生技术难、运行维护成本高的技术问题。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的挥发性有机物吸附净化与催化再生一体化装置的整体结构示意图；
图2为本发明实施例提供的挥发性有机物吸附净化与催化再生一体化装置的内部结构示意图；
图3为图2实施例提供的挥发性有机物吸附净化与催化再生一体化装置的A-A方向的剖面结构示意图；
图4为图2实施例提供的挥发性有机物吸附净化与催化再生一体化装置的A-A方向的另一实施方式的剖面结构示意图；
图5为图2实施例提供的挥发性有机物吸附净化与催化再生一体化装置的B-B方向的剖面结构示意图；
图6为本发明实施例提供的挥发性有机物吸附净化与催化再生一体化装置的过滤吸附耦合滤芯的结构示意图。
图标：100-过滤吸附耦合滤芯；101-滤芯主体；102-吸附过滤机构；112-第一固定网；122-吸附滤层；132-第二固定网；200-催化燃烧再生箱；201-箱体；202-循环风机；203-再生机构；213-电加热机构；223-催化燃烧段；204-单向阀；205-防火换热段；300-壳体；301-过滤内腔；311-第一内腔；321-第二内腔；302-进气口；303-出气口；400-控制装置。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限 制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
此外，术语“水平”、“竖直”等术语并不表示要求部件绝对水平或悬垂，而是可以稍微倾斜。如“水平”仅仅是指其方向相对“竖直”而言更加水平，并不是表示该结构一定要完全水平，而是可以稍微倾斜。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
需要说明的是，VOCs的光化学定义是指参与大气光化学反应的有机化合物，或者根据规定的方法测量或核算确定的有机化合物。一般说来，VOCs包括非甲烷烃类(烷烃、烯烃、炔烃、芳香烃等)、含氧有机物(醛、酮、醇、醚等)、含氯有机物、含氮有机物、含硫有机物等，是形成臭氧(O3)和细颗粒物(PM2.5)污染的重要前体物。VOCs是除颗粒物外第二大分布广泛和种类复杂的大气污染物，对生态环境***和人体健康的危害有主要三个方面：一是部分种类具有毒性和致癌，危害人体健康；二是与氮氧化物共同参与大气光化学反应，形成臭氧污染；三是经化学反应生成二次气 溶胶，是造成细颗粒物(PM2.5)的重要前提物。控制并降低各类污染源挥发性有机物(以下简称VOCs)的排放量，是降低大气臭氧和PM2.5浓度水平，改善空气质量的重要途径。
如图1-图6所示，本实施例提供的一种挥发性有机物吸附净化与催化再生一体化装置，包括：过滤吸附耦合滤芯100、催化燃烧再生箱200和壳体300；壳体300包括依次连通的过滤内腔301和燃烧内腔，壳体300用于挥发性有机物废气的密闭流通，过滤吸附耦合滤芯100设置于过滤内腔301内，过滤吸附耦合滤芯100用于对挥发性有机物废气进行吸附过滤，催化燃烧再生箱200位于燃烧内腔内，催化燃烧再生箱200用于对过滤吸附耦合滤芯100进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化。
需要说明的是，本实施例提供的挥发性有机物吸附净化与催化再生一体化装置适用于低浓度、大风量、间歇性排放的挥发性有机物废气的净化处理；其中，挥发性有机物吸附净化与催化再生一体化装置具有两种工况，分别是利用过滤吸附耦合滤芯100对VOCs进行吸附，然后在废气停止排放的间歇，利用催化燃烧再生箱200对过滤吸附耦合滤芯100的吸附滤层122进行热解析再生，并且对热解析出的挥发性有机物废气进行催化燃烧净化，实现了两种技术的高密度协同净化集成，实现了吸附与催化再生一体化装置。
可选地，壳体300作为一个容置空间，其中过滤内腔301和燃烧内腔是作为存放过滤吸附耦合滤芯100和催化燃烧再生箱200的空间，利用壳体300内部流通挥发性有机物废气，从而能够利用过滤吸附耦合滤芯100对挥发性有机物进行吸附，当废气停止排放的间歇，利用开启催化燃烧再生箱200，对挥发性有机物废气进行热催化燃烧净化。
在本发明较佳的实施例中，过滤吸附耦合滤芯100包括滤芯主体101和吸附过滤机构102；吸附过滤机构102设置于滤芯主体101内部，吸附过滤机构102用于对挥发性有机物废气进行吸附过滤；吸附过滤机构102包括依次连接的第一固定网112、吸附滤层122和第二固定网132；吸附滤层122位于第一固定网112和第二固定网132之间。
其中，滤芯主体101包括多孔催化套筒；多孔催化套筒设置为圆形或 圆形折叠结构，多孔催化套筒的孔隙率大于或等于30％。其中，多孔催化套筒的孔隙率一般不低于30％。
可选地，多孔催化套筒的基材可以采用泡沫陶瓷、蜂窝陶瓷、微孔金属蜂窝板、玻璃纤维等多孔耐热材料。
本实施例中，第一固定网112为内侧固定网，用于将对吸附过滤机构102进行固定，并且第二固定网132和第一固定网112将吸附过滤机构102夹持在内部，同时，第一固定网112和第二固定网132上均布置有通孔，从而将挥发性有机物废气通过后利用吸附过滤机构102进行吸附。
在本发明较佳的实施例中，吸附过滤机构102包括活性炭滤层或分子筛滤层；活性炭滤层包括颗粒状活性炭、蜂窝状活性炭、空心柱状活性炭和活性炭纤维过滤棉中的至少一个；分子筛滤层包括颗粒状分子筛、蜂窝状分子筛和空心柱状分子筛中的至少一个。
可选地，吸附过滤机构102的滤层可以设置有多层，多层吸附过滤机构102的滤层可以采用不同材质的滤层，从而能够更加全面的对VOCs进行吸附。
在本发明较佳的实施例中，还包括相对设置的把手盖板和端盖封板；把手盖板位于滤芯主体101一端，端盖封板位于滤芯主体101的另一端，把手盖板和端盖封板分别与滤芯主体101连接。
本实施例提供的挥发性有机物吸附净化与催化再生一体化装置，包括：过滤吸附耦合滤芯100、催化燃烧再生箱200和壳体300；壳体300包括依次连通的过滤内腔301和燃烧内腔，壳体300用于挥发性有机物废气的密闭流通，过滤吸附耦合滤芯100设置于过滤内腔301内，催化燃烧再生箱200位于燃烧内腔内，通过利用过滤吸附耦合滤芯100对挥发性有机物废气进行吸附过滤，并且在脱附再生工况下，利用催化燃烧再生箱200对过滤吸附耦合滤芯100进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化；实现了两种技术的高密度协同净化集成，具有结构紧凑、净化效率高、可循环利用、二次污染小、成本低、经济效益好的技术效果，缓解了现有技术中存在的挥发性有机物的防治装置分段组合或分体再生技术路线造成的体积大，现场再生技术难、运行维护成本高的技术问题。
在上述实施例的基础上，进一步地，在本发明较佳的实施例中，壳体300还包括进气口302和出气口303；进气口302与过滤内腔301连通，进气口302用于将接收到的挥发性有机物废气输送至过滤内腔301内，出气口303与燃烧内腔连通，出气口303用于将流经过滤吸附耦合滤芯100和催化燃烧再生箱200净化后的气体排出。
其中，壳体300内部作为流通挥发性有机物废气的容置空间，通过区分用于安装过滤吸附耦合滤芯100的过滤内腔301和用于安装催化燃烧再生箱200的燃烧内腔，本实施例中，利用区分区域进而区分过滤内腔301和燃烧内腔，并且将催化燃烧再生箱200设置在出气口303的位置，并将过滤吸附耦合滤芯100设置在出气口303的位置，进而使得当挥发性有机物废气进入到壳体300内时，会首先被过滤吸附耦合滤芯100进行吸附。
另外，燃烧内腔和过滤内腔301的位置也可以采用其他方式，例如：将燃烧内腔布置于过滤内腔301的中间位置，从而能够将催化燃烧再生箱200位于多个过滤吸附耦合滤芯100的中间位置，使得催化燃烧再生箱200输出的温度高的气体对过滤吸附耦合滤芯100进行热解析再生。
在本发明较佳的实施例中，过滤内腔301包括连通的第一内腔311和第二内腔321，壳体300包括进气口302和出气口303，第一内腔311的进口与进气口302连通，第二内腔321的出口与出气口303连通；壳体300内开设有多个与第一内腔311相对应的滤芯安装孔，过滤吸附耦合滤芯100设置有多个，且过滤吸附耦合滤芯100一一对应地安装于滤芯安装孔内，以使待净化的挥发性有机物从进气口302进入经过多个过滤吸附耦合滤芯100后流经第二内腔321经出气口303排出。
本实施例中，为了能够安装且过滤吸附耦合滤芯100，利用在壳体300的第一内腔311设置有多个滤芯安装孔，并且在滤芯安装孔内设置有滤芯导轨，过滤吸附耦合滤芯100利用滤芯导轨安装在滤芯安装孔内部。
其中，第一内腔311作为滤芯安装孔的容置空间，在第一内腔311的其他区域为第二内腔321，第二内腔321与燃烧内腔连通，在第一内腔311中的过滤吸附耦合滤芯100的对挥发性有机物废气进行吸附后，此时第二内腔321用于流通吸附后的气体；或者，当燃烧内腔内的催化燃烧再生箱200对挥发性有机物废气进行催化燃烧净化时，此时第二内腔321 内用于流通空气。
可选地，进气口302位置可以设置有烟气止回阀，出气口303位置可以设置有电动排风阀；其中，烟气止回阀可以采用排烟防火阀。
在本发明较佳的实施例中，催化燃烧再生箱200包括箱体201、循环风机202和再生机构203；再生机构203位于箱体201内，再生机构203内设置有催化剂，再生机构203用于加热催化剂和挥发性有机物废气，以通过加热后挥发性有机物废气对过滤吸附耦合滤芯100进行热解析再生，并通过加热后的催化剂对挥发性有机物废气催化燃烧分解；循环风机202位于壳体300的外部，循环风机202与箱体201内部连通，用于将脱附后的挥发性有机物废气输送至箱体201内。
可选地，箱体201可以采用钢或不锈钢材料；其中，循环风机202用于对箱体201与过滤吸附耦合滤芯100之间循环输送。
在本发明较佳的实施例中，再生机构203包括电加热机构213和催化燃烧段223；电加热机构213和催化燃烧段223呈间隔串联设置，电加热机构213用于加热催化燃烧段223。
在本发明较佳的实施例中，催化燃烧段223包括多层催化燃烧层；任意两个催化燃烧层之间布置有电加热机构213；催化剂涂覆于催化燃烧层的外部。
本实施例中，催化燃烧层可以采用泡沫陶瓷、蜂窝陶瓷为载体，在载体上涂布VOCs低温燃烧催化剂，其中，催化剂可以为贵金属或过渡金属氧化物等VOCs催化剂，催化剂的工作温度范围为200℃-400℃；在该催化剂的作用下，在200℃-400℃的低温条件下将再生热解析出的VOCs分解为CO2和H2O，不仅可净化碳氢化合物废气，而且也能去除恶臭气味。
可选地，电加热机构213可以采用电加热丝。
本实施例中，再生机构203用于加热催化剂和废气，在脱附再生工况时，可以对循环空气进行加热，利用热空气对过滤吸附耦合滤芯100进行热解析，并且可以对催化剂加热，使其达到催化燃烧温度，当VOCs在催化剂作用下开始燃烧并可维持热反应温度后，自动停止加热，利用废气中VOCs的燃烧热量逐步提高热解析温度；其中，当过滤吸附耦合滤芯100使用活性炭作为吸附剂的滤芯，热空气加热温度可以为100℃左右，最高 不超过120℃；当过滤吸附耦合滤芯100使用分子筛作为吸附剂的滤芯，热空气加热温度可以为120℃左右，最高不超过150℃。
在本发明较佳的实施例中，还包括单向阀204；单向阀204位于箱体201的出口位置，单向阀204用于限定催化燃烧再生箱200向过滤吸附耦合滤芯100的输送方向。
可选地，单向阀204可以采用翼阀，翼阀的阀板可以受重力作用和负压作用进行单向密封，从而限定催化燃烧再生箱200向过滤吸附耦合滤芯100的输送方向。
在本发明较佳的实施例中，还包括防火换热段205；防火换热段205位于箱体201内部，且防火换热段205位于单向阀204和催化燃烧段223之间。
可选地，防火换热段205可以采用管式换热隔热层。
本实施例中，当催化燃烧再生箱200进行工作时，此时为脱附再生工况，脱附再生循环循环为：循环风机202出口→再生机构203(VOCs净化)→防火换热段205→单向阀204→壳体300内的过滤内腔301→过滤吸附耦合滤芯100(VOCs脱附)→循环风机202进口。
另外，在本发明较佳的实施例中，还包括排风机，排风机设置于壳体300内部，利用排风机能够保证待净化的挥发性有机物气体随着排风机的输出方向沿着进气口302向出气口303的方向进行输送。
在本发明较佳的实施例中，还包括控制装置400、压差检测装置、催化温度检测装置、烟气温度检测装置和警报装置；压差检测装置、催化温度检测装置、烟气温度检测装置和警报装置分别与控制装置400电信号连接，压差检测装置设置于过滤内腔301内且位于过滤吸附耦合滤芯100的出气端，用于检测并向控制装置400输出过滤内腔301内压降差的信号，烟气温度检测装置设置于过滤内腔301的出气端，用于测量废气温度，并将此废气温度信息传输至控制装置400处，催化温度检测装置设置于燃烧内腔的出气端，用于测量催化剂温度，并将此催化剂温度信息传输至控制装置400处；控制装置400分别与催化燃烧再生箱200和警报装置电信号连接，控制装置400配置成根据过滤内腔301内压降差的信号和废气温度信息，对应控制催化燃烧再生箱200及警报装置的状态。
本实施例中，当废气温度大于150℃时，由控制装置400开启排风机，排出高温再生废气，防治活性炭催化剂着火，避免火灾事故；控制装置400配置成根据压差检测装置、催化温度检测装置和烟气温度检测装置分别输出的信号控制排风机或警报装置的状态。
可选地，控制装置400可以为多种，例如：MCU，计算机，PLC控制器等，较佳地，控制装置400为MCU。微控制单元(Microcontroller Unit；MCU)，又称单片微型计算机或者单片机，是把中央处理器的频率与规格做适当缩减，并将内存、计数器、USB、A/D转换、UART、PLC、DMA等周边接口，甚至LCD驱动电路都整合在单一芯片上，形成芯片级的计算机，为不同的应用场合做不同组合控制。
优选地，控制装置400采用STM32F103C8T6单片机，此单片机处理能力强，内部资源丰富，运行稳定。
可选地，警报装置可以采用声光电警报设备。
可选地，压差检测装置可以采用压差传感器，催化温度检测装置和烟气温度检测装置均可以采用温度传感器。
本实施例中，挥发性有机物吸附净化与催化再生一体化装置具有两个工作状况，分时循环：
工况1：VOCs吸附净化工况，此时排风机正常开启，第一内腔311前置的烟气止回阀和出气口303的电动排气阀开启，被净化废气经过进气口302、第一内腔311、过滤吸附耦合滤芯100、第二内腔321、出气口303，经出气口303外排。
工况2：脱附催化再生状态，此时排风机关闭或小风量开启，烟气止回阀关闭或微开，电动排气阀微开或关闭，开启循环风机202，开启电加热机构213预热催化燃烧段223和箱体201内的空气，风量可以为工作风量的5％～20％，循环风经催化燃烧净化，产生热量再加热壳体300内的空气，逐步升温脱附，利用热空气对过滤吸附耦合滤芯100吸附的VOCs脱附，在壳体300内经过多次循环净化后，实现对过滤吸附耦合滤芯100的现场再生，脱附废气经净化后外排。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的 普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (10)

  1. 一种挥发性有机物吸附净化与催化再生一体化装置，其特征在于，包括：过滤吸附耦合滤芯、催化燃烧再生箱和壳体；
    所述壳体包括依次连通的过滤内腔和燃烧内腔，所述壳体用于挥发性有机物废气的密闭流通，所述过滤吸附耦合滤芯设置于所述过滤内腔内，所述过滤吸附耦合滤芯用于对挥发性有机物废气进行吸附过滤，所述催化燃烧再生箱位于所述燃烧内腔内，所述催化燃烧再生箱用于对过滤吸附耦合滤芯进行热解析再生，并对热解析出的挥发性有机物废气进行催化燃烧净化。
  2. 根据权利要求1所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述壳体还包括进气口和出气口；
    所述进气口与所述过滤内腔连通，所述进气口用于将接收到的挥发性有机物废气输送至所述过滤内腔内，所述出气口与所述燃烧内腔连通，所述出气口用于将流经所述过滤吸附耦合滤芯和所述催化燃烧再生箱净化后的气体排出。
  3. 根据权利要求1所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述催化燃烧再生箱包括箱体、循环风机和再生机构；
    所述再生机构位于所述箱体内，所述再生机构内设置有催化剂，所述再生机构用于加热催化剂和挥发性有机物废气，以通过加热后挥发性有机物废气对过滤吸附耦合滤芯进行热解析再生，并通过加热后的催化剂对挥发性有机物废气催化燃烧分解；
    所述循环风机位于所述壳体的外部，所述循环风机与所述箱体内部连通，用于将脱附后的挥发性有机物废气输送至所述箱体内。
  4. 根据权利要求3所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述再生机构包括电加热机构和催化燃烧段；
    所述电加热机构和所述催化燃烧段呈间隔串联设置，所述电加热机构用于加热所述催化燃烧段。
  5. 根据权利要求4所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述催化燃烧段包括多层催化燃烧层；
    任意两个所述催化燃烧层之间布置有电加热机构；
    所述催化剂涂覆于所述催化燃烧层的外部。
  6. 根据权利要求5所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，还包括单向阀；
    所述单向阀位于所述箱体的出口位置，所述单向阀用于限定所述催化燃烧再生箱向所述过滤吸附耦合滤芯的输送方向。
  7. 根据权利要求6所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，还包括防火换热段；
    所述防火换热段位于所述箱体内部，且所述防火换热段位于所述单向阀和所述催化燃烧段之间。
  8. 根据权利要求1所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述过滤吸附耦合滤芯包括滤芯主体和吸附过滤机构；
    所述吸附过滤机构设置于所述滤芯主体内部，所述吸附过滤机构用于对挥发性有机物废气进行吸附过滤；
    所述吸附过滤机构包括依次连接的第一固定网、吸附滤层和第二固定网；所述吸附滤层位于所述第一固定网和第二固定网之间。
  9. 根据权利要求1所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，所述过滤内腔包括连通的第一内腔和第二内腔，所述壳体包括进气口和出气口，所述第一内腔的进口与所述进气口连通，所述第二内腔的出口与所述出气口连通；
    所述壳体内开设有多个与所述第一内腔相对应的滤芯安装孔，所述过滤吸附耦合滤芯设置有多个，且所述过滤吸附耦合滤芯一一对应地安装于所述滤芯安装孔内，以使待净化的挥发性有机物从所述进气口进入经过多个所述过滤吸附耦合滤芯后流经所述第二内腔经所述出气口排出。
  10. 根据权利要求1-9任一项所述的挥发性有机物吸附净化与催化再生一体化装置，其特征在于，还包括控制装置、压差检测装置、催化温度检测装置、烟气温度检测装置和警报装置；
    所述压差检测装置、催化温度检测装置、烟气温度检测装置和所述警报装置分别与所述控制装置电信号连接，所述压差检测装置设置于所述过滤内腔内且位于所述过滤吸附耦合滤芯的出气端，用于检测并向所述控制装置输出所述过滤内腔内压降差的信号，所述烟气温度检测装置设置于过 滤内腔的出气端，用于测量废气温度，并将此废气温度信息传输至所述控制装置处，所述催化温度检测装置设置于燃烧内腔的出气端，用于测量催化剂温度，并将此催化剂温度信息传输至所述控制装置处；
    所述控制装置分别与所述催化燃烧再生箱和所述警报装置电信号连接，所述控制装置配置成根据所述过滤内腔内压降差的信号和所述废气温度信息，对应控制所述催化燃烧再生箱及所述警报装置的状态。
PCT/CN2021/100607 2020-09-15 2021-06-17 挥发性有机物吸附净化与催化再生一体化装置 WO2022057347A1 (zh)

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