WO2023210923A1 - Système de traitement de composé organique volatil pour la régénération et le traitement d'un filtre en nid d'abeilles à charbon actif au moyen de la chaleur perdue d'une installation d'incinération - Google Patents

Système de traitement de composé organique volatil pour la régénération et le traitement d'un filtre en nid d'abeilles à charbon actif au moyen de la chaleur perdue d'une installation d'incinération Download PDF

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WO2023210923A1
WO2023210923A1 PCT/KR2023/000494 KR2023000494W WO2023210923A1 WO 2023210923 A1 WO2023210923 A1 WO 2023210923A1 KR 2023000494 W KR2023000494 W KR 2023000494W WO 2023210923 A1 WO2023210923 A1 WO 2023210923A1
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Prior art keywords
volatile organic
regeneration device
incinerator
organic compound
voc
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PCT/KR2023/000494
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English (en)
Korean (ko)
Inventor
이강홍
장두훈
윤완호
황승하
신종혁
김신한
정지성
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(주) 세라컴
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Publication of WO2023210923A1 publication Critical patent/WO2023210923A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
    • B01D46/84—Chemical processes for the removal of the retained particles, e.g. by burning by heating only
    • 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
    • B01D53/34—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

Definitions

  • the present invention relates to a volatile organic compound (VOC) treatment system for regenerating a VOC filter that adsorbs volatile organic compounds (VOC) from polluted air.
  • VOC volatile organic compound
  • VOC Volatile Organic Compounds
  • volatile organic compounds are regulated through the Air Quality Conservation Act and the Odor Prevention Act, and accordingly, they are used in printing facilities, painting facilities for automobiles and ships, textile dyeing facilities, paint manufacturing facilities, oil storage facilities, and chemical processing facilities. This is a setting that requires VOC reduction facilities by notifying the permissible emission limit of volatile organic compounds generated and discharged into the atmosphere at less than 50 ppm.
  • the volatile organic compounds are usually directly removed or treated using a thermal oxidation method, a catalytic oxidation method, or a cleaning water spray method.
  • these treatment methods have maintenance costs due to replacement of adsorbents, etc.
  • There are problems such as rising costs and high facility and operating costs for separating and reusing treated water.
  • honeycomb activated carbon filters that purify polluted air by adsorbing volatile organic compounds (VOC) and technologies for regenerating them have been disclosed.
  • VOC volatile organic compounds
  • the present invention provides a volatile organic compound treatment device to improve the thermal efficiency required when regenerating a VOC filter or to prevent explosion of VOC gas desorbed in high concentration when the VOC filter is regenerated in a high temperature atmosphere.
  • the present invention provides at least one VOC filter - the VOC filter is a honeycomb-shaped filter made of activated carbon - to regenerate the VOC filter by desorbing the adsorbed volatile organic compounds.
  • a regeneration device a heat exchanger that exchanges heat with outdoor air using waste heat generated in the incinerator, and provides the heat-exchanged and heated outdoor air to the regeneration device, and is provided between the regeneration device and the heat exchanger to supply nitrogen to the regeneration device. It provides a volatile organic compound treatment system characterized in that it includes a nitrogen generator that supplies.
  • the heat exchanger may further include a first fan that supplies the outside air that is heat-exchanged with the waste heat.
  • the nitrogen generator may supply nitrogen so that the oxygen concentration of the gas supplied to the regeneration device is 0.5% or less.
  • the gas discharged from the regeneration device may be further included to guide the gas discharged from the regeneration device to the incinerator so that the gas discharged from the regeneration device is incinerated at a high temperature in the incinerator.
  • Selective Catalyst Reduction may be further included to reduce or purify nitrogen oxides in the air discharged to the outside from the incinerator.
  • a heating device provided on the downstream side of the heat exchanger may further include a heating device that heats air supplied to the regeneration device so that the regeneration device can desorb volatile organic compounds of the VOC filter.
  • it may include a boiler that generates steam using waste heat generated in the incinerator, and a bypass passage connected to a rear end of the incinerator and passing through the heat exchanger but bypassing the boiler.
  • a second fan that injects purified air into the bypass passage may be further included.
  • the volatile organic compound treatment device can regenerate the VOV filter using the waste heat of the incinerator, the thermal efficiency required for regenerating the VOC filter can be improved.
  • VOC filter when the VOC filter is regenerated in a high temperature atmosphere, explosion of VOC gas desorbed in high concentration can be prevented.
  • Figure 1 is a diagram showing a collection point of a VOC filter that adsorbs VOC according to an embodiment of the present invention.
  • Figure 2 is a diagram showing the appearance of a honeycomb structure using activated carbon according to an embodiment of the present invention.
  • Figure 3 is a graph showing the VOC removal rate of a honeycomb structure using activated carbon and activated carbon pellets according to an embodiment of the present invention.
  • Figure 4 is a diagram schematically showing the adsorption and desorption action of the VOC adsorption and desorption filter according to an embodiment of the present invention.
  • Figure 5 is a configuration diagram of a volatile organic compound treatment system according to an embodiment of the present invention.
  • Figure 1 is a diagram showing a collection point of a VOC filter that adsorbs VOC according to an embodiment of the present invention.
  • volatile organic compounds are used in paint painting facilities for automobiles and ships, textile dyeing facilities, paint manufacturing facilities, automobile manufacturers, semiconductor manufacturing facilities, oil storage facilities, and chemical processing facilities. It is generated and discharged into the atmosphere, and at this time, a VOC adsorption and desorption filter (or VOC filter) is used to reduce volatile organic compounds.
  • VOC adsorption and desorption filter can adsorb, concentrate and store volatile organic compounds (VOC) in the incoming polluted air.
  • VOC adsorption/desorption filter is used interchangeably with VOC filter.
  • the VOC adsorption and desorption filter is 20 to 60% by weight of carbon powder, preferably 30 to 50% by weight, most preferably 35 to 45% by weight, and one or more types of clay selected from the group consisting of palygorskite and kaolin. It includes a mixed powder containing 40 to 80% by weight of mineral powder, preferably 50 to 70% by weight, and most preferably 55 to 65% by weight of mineral powder, and may be formed integrally by extrusion molding.
  • the VOC adsorption and desorption filter may be a honeycomb structure composed of multiple cells with a plurality of ventilation holes (or through holes) penetrating in the thickness direction.
  • the VOC adsorption and desorption filter further includes 1 to 20 parts by weight of a binder, preferably 5 to 15 parts by weight, and 50 to 70 parts by weight of a dispersion solvent, preferably 55 to 65 parts by weight, based on 100 parts by weight of the mixed powder. can do.
  • the carbon powder serves to physically adsorb and remove odor components through numerous pores present on the surface, and is one or more selected from the group consisting of activated carbon, activated carbon fiber, charcoal, carbon nanotubes, graphite, and carbon black. , preferably activated carbon.
  • the average particle diameter of the carbon powder may be 1 to 40 ⁇ m, preferably 20 to 30 ⁇ m. If the average particle diameter of the carbon powder is less than 1 ⁇ m, the load during the suction process is large when applied to the VOC adsorption/desorption filter, resulting in large power consumption and shortening the lifespan of the regeneration system. If it exceeds 40 ⁇ m, the suction process is interrupted.
  • the iodine adsorption capacity may be 600 to 1200 mg/g.
  • the carbon powder may be included in an amount of 20 to 60% by weight, preferably 30 to 50% by weight, and most preferably 35 to 45% by weight. This is undesirable because if the carbon powder is less than 20% by weight, the porosity of the filter may decrease and the adsorption characteristics may deteriorate, and if it exceeds 60% by weight, durability and mechanical properties may deteriorate.
  • the clay mineral powder has a high specific surface area, which improves the adsorption performance of activated carbon, and the unique performance of clay minerals can increase the effect of improving moldability during molding.
  • Such clay mineral powder may be a mixture of palygorskite and kaolin at a weight ratio of 0.5 to 1.5:1, preferably 0.8 to 1.2:1. If the mixing ratio of paligorskite and kaolin is less than 0.5:1 or more than 1.5:1 by weight, adsorption performance may be reduced.
  • Palygorskite is a 2:1 clay mineral that occurs in the form of needles and has a tunnel structure due to the chain structure of silicic acid tetrahedron. It contains water molecules within the tunnel, and its chemical formula is [Si 8 Mg 2 Al. 2 O 20 (OH) 2 (OH) 2 ⁇ 4H 2 O]. Additionally, commercially available products such as attapulgite can be purchased and used.
  • the kaolin is the most representative clay mineral and has a unit structure of silicic acid tetrahedral layer and alumina octahedral layer in a ratio of 1:1, and is made up of three types with different structures: kaolinite, dickite, and nacrite. It may contain halloysite with added minerals and interlayer water.
  • the chemical composition of the three minerals other than halloysite is [Al 2 Si 2 O 5 (OH) 4 ] or [Al 2 O 3 ⁇ 2SiO 2 ⁇ 2H 2 O], and the weight % of oxide is SiO 2 , 46.5%; Al 2 O 3 , 39.5%; H 2 O, 14.0%, has the most consistent composition among clay minerals.
  • the clay mineral powder may be included in an amount of 40 to 80% by weight, preferably 50 to 70% by weight, and most preferably 55 to 65% by weight. If the clay mineral powder is less than 40% by weight, the clay component may decrease, which may result in lower moldability during molding. If it exceeds 80% by weight, the content of carbon powder will be relatively reduced, resulting in lower adsorption efficiency for harmful substances and contaminants. You can.
  • the binder is a substance that serves to make the dough of carbon powder and clay mineral powder uniform and stable and maintain good binding, and is made of carboxymethyl cellulose (CMC), methyl cellulose (MC), and It may be one or more selected from the group consisting of hydroxypropyl methylcellulose (HPMC), preferably methyl cellulose (MC), but is not limited thereto, and in addition to the binder mentioned above, polyvinyl butyral ( An organic binder such as polyvinyl butyral or an inorganic binder such as barium carbonate (BaCO3) can be added and mixed as needed.
  • CMC carboxymethyl cellulose
  • MC methyl cellulose
  • HPMC hydroxypropyl methylcellulose
  • MC methyl cellulose
  • BaCO3 barium carbonate
  • the binder may be added in an amount of 1 to 20 parts by weight, preferably 5 to 15 parts by weight, based on 100 parts by weight of the mixed powder. If the binder is less than 1 part by weight, durability may be reduced due to insufficient bonding between the mixed powders, and if it exceeds 20 parts by weight, it may be difficult for the carbon powder and clay mineral powder to be evenly dispersed. When the binder content is within the above range, the carbon powder and clay mineral powder can be more effectively combined.
  • the dispersion solvent is one selected from the group consisting of purified water, methanol, ethyl alcohol, glycerin, ethyl acetate, butylene glycol, and propylene glycol.
  • purified water can be preferably used, but it is not limited to this, and different types can be applied depending on the type of binder.
  • the dispersion solvent may be added in an amount of 50 to 70 parts by weight, preferably 55 to 65 parts by weight, based on 100 parts by weight of the mixed powder.
  • dispersion solvent is less than 50 parts by weight, it is difficult for the carbon powder and clay mineral powder to be evenly dispersed, and if it exceeds 70 parts by weight, it may be difficult to maintain shape retention during filter manufacturing.
  • the VOC adsorption and desorption filter according to an embodiment of the present invention is extrusion molded using carbon powder of activated carbon, and includes a plurality of cells having a plurality of through holes (or ventilation holes) penetrating in the thickness direction. It is preferable that it is a honeycomb structure made of (cells) (see Figure 2(a)).
  • the VOC adsorption and desorption filter of the honeycomb structure using activated carbon has a higher specific surface area and superior strength than activated carbon pellets (see Figure 2(b)), and more than 80% of the gas flows through the ventilation holes of the honeycomb structure.
  • the differential pressure is reduced, and the VOC adsorption speed is fast due to the high specific surface area, so the VOC removal rate is high and the possibility of fire is low.
  • the cell density of the honeycomb structure may be 100 cpsi (cells per square inch) to 600 cpsi, considering the back pressure of gas passing through the cell and VOC adsorption performance, but is not particularly limited.
  • the results of comparing the VOC removal performance over time of the VOC adsorption and desorption filter of the honeycomb structure using activated carbon and the VOC adsorption and desorption filter of activated carbon pellets are shown in the graph in Figure 3, and the VOC adsorption and desorption filter over time
  • the results of comparing the THC (Total HydroCarbons) removal rates are shown in the table below.
  • the honeycomb structure was extruded at a cell density of 100 cpsi using a mixed powder of 35% by weight of carbon powder and 65% by weight of clay mineral powder mixed with palygorskite and kaolin at a weight ratio of 1:1,
  • the VOC evaluation device for this was ATOVAC TM 's GMC1200, and the THC measurement device was thermoscientific TM 's TVA2020.
  • the honeycomb structure using activated carbon has a relatively higher VOC removal rate or THC removal rate over the entire time period than activated carbon pellets made of 75% by weight of carbon powder, and the VOV removal rate or THC removal rate over time It can be seen that the removal rate remained relatively constant.
  • Figure 4 is a diagram schematically showing the adsorption and desorption action of the VOC adsorption and desorption filter according to an embodiment of the present invention
  • Figure 5 is a configuration of a volatile organic compound treatment system according to an embodiment of the present invention. It's a degree.
  • the VOC adsorption and desorption filter which adsorbs and fixes volatile organic compounds (VOC) and accumulates and stores volatile organic compounds (VOC), is input into the regeneration device 10 and releases the volatile organic compounds in a predetermined high temperature environment. (VOC) may be desorbed.
  • the regeneration device 10 is a means for desorbing volatile organic compounds (VOC) from the VOC filter, and the volatile organic compounds concentrated and stored in the VOC filter can be desorbed as shown in Chemical Formula 1 below in a temperature range of 300 to 400 ° C. there is.
  • VOC volatile organic compounds
  • the regeneration device 10 uses waste heat generated in the incinerator 2, as shown in FIG. Available.
  • the incinerator (2) can burn and incinerate combustible waste (waste wood, waste paper, waste vinyl, etc.), and at the rear end of the incinerator (2), high temperature waste heat gas generated when burning waste in the incinerator (2) is stored.
  • a boiler 3 that produces steam can be provided.
  • the steam produced in the boiler 3 is supplied to a high-pressure steam distributor, and from the pneumatic steam distributor, it can be supplied to a steam air preheater, deaerator, heating and cooling equipment, greenhouse, steam turbine, etc., Surplus steam may be supplied to nearby industrial complexes or agricultural facilities.
  • the regeneration device 10 is a volatile organic compound treatment system (1) according to an embodiment of the present invention to regenerate the VOC adsorption and desorption filter using the waste heat generated in the incinerator 2.
  • a branch flow path (f11) branched between the incinerator (2) and the boiler (3) to utilize the heat of the waste heat gas generated in the incinerator (2) and leading the waste heat gas to the heat exchanger (20). You can.
  • branch flow path (f11) branched between the incinerator (2) and the boiler (3) extends to the exhaust flow path (f3) provided at the rear end of the incinerator (2) or boiler (3) via the heat exchanger (20).
  • a bypass flow path (f2) can be formed.
  • the gas discharged from the regeneration device 10 that is, the volatile organic compound (VOC) gas desorbed from the VOC filter
  • the VOC filter It is preferable that the volatile organic compound (VOC) gas desorbed is reintroduced into the incinerator (2) so that it can be incinerated at high temperature in the incinerator (2).
  • the volatile organic compound treatment system 1 may include a circulation passage f12 connecting the regeneration device 10 and the incinerator 2. Accordingly, the branch flow path (f11) is connected to the circulation flow path (f12) via the heat exchanger 20 and the regeneration device 10, and the incinerator 2 and the regeneration device 10 are connected to the branch flow path (f11).
  • a loop can be formed by the circulation passage f12.
  • the volatile organic compounds (VOC) desorbed from the VOC filter by the regeneration device 10 can be supplied to the incinerator 2 along the circulation passage f12 connected to the regeneration device 10, and the incinerator 2
  • the volatile organic compound (VOC) gas together with the waste is burned and incinerated at high temperature, and the waste heat generated in the incinerator 2 is supplied to the regeneration device 10 through the heat exchanger 20. The process can be repeated. .
  • a heat exchanger 20 is provided on the branch flow path f11 to supply the waste heat gas generated in the incinerator 2 to the regeneration device 10. It can be.
  • the heat exchanger 20 is a means for exchanging heat between the gas generated and discharged from the incinerator 2 and the outside air, and the high temperature gas discharged from the incinerator 2 can share heat with the outside air at room temperature.
  • a first fan 21 may be provided to supply the waste heat of the incinerator 2 to the heat exchanger 20 and ambient air at room temperature, which is the object of heat exchange.
  • the first fan 21 can supply outside air to the heat exchanger 20, allowing the heat exchanger 20 to exchange heat with the high temperature exhaust gas of the incinerator 2.
  • the temperature of the gas discharged from the incinerator 2 is a high temperature of approximately 900 to 1,000°C, and varies depending on the heat exchange efficiency of the heat exchanger 20, but for example, the room temperature provided from the first fan 21 by the heat exchanger 20
  • the temperature of the outdoor air may be raised to approximately 150 to 200°C.
  • the outside air heated by the heat exchanger 20 may form a temperature range of 150 to 200° C.
  • the regeneration device 10 is capable of desorbing volatile organic compounds (VOC) from the VOC filter provided inside. Since it does not reach the temperature range of 300 to 400°C, a heating device 25 may be provided between the regeneration device 10 and the heat exchanger 20 to heat it.
  • VOC volatile organic compounds
  • the heating device 25 is provided on the downstream side of the heat exchanger 20 or the upstream side of the regeneration device 10, so that the regeneration device 10 can have an atmosphere at a temperature that can regenerate the VOC filter. ) can be heated and supplied to the regeneration device 10.
  • the heating device 25 may include a heater 26 to heat the air or gas that has passed through the heat exchanger 20.
  • the heating device 25 includes a chamber capable of receiving air or gas supplied to the regeneration device 10 through the heat exchanger 20, and a heater for heating the air or gas contained in the chamber ( 26) may be included.
  • the heater 26 is for heating air or gas that has passed through the heat exchanger 20, and may include a burner, an electric heater, a solar heater, etc., as examples.
  • a burner refers to a device that heats air by igniting fuel such as LNG, LPG, or liquid fuel
  • an electric heater refers to a device that heats air using electrical energy
  • a solar heater refers to a device that heats air using solar energy.
  • the type of the heater 26 according to an embodiment of the present invention is not particularly limited as long as it can heat the air discharged through the heat exchanger 20.
  • the volatile organic compound treatment system 1 includes a control unit for controlling the on/off of the heating device 25 or the heater 26 or adjusting the degree of heating (or heating level). may include.
  • the control unit determines whether the temperature within the regeneration device 10 is within a temperature range capable of desorbing volatile organic compounds (VOC), and the value measured by at least one temperature sensor (not shown) provided within the regeneration device 10. can be used, and accordingly, the controller can control the heating device 25 or the heater 26 to turn on/off or heat to a predetermined level using the value measured from the temperature sensor.
  • VOC volatile organic compounds
  • the regeneration device 10 must form a high-temperature atmosphere to desorb volatile organic compounds from the VOC filter, but the high-temperature atmosphere within the regeneration device 10 Therefore, there is a risk of explosion of volatile organic compounds (VOC) desorbed in high concentration inside.
  • VOC volatile organic compounds
  • a nitrogen generator 30 may be provided between the regeneration device 10 and the heat exchanger 20 according to an embodiment of the present invention.
  • the nitrogen generator 30 can supply nitrogen to the gas supplied from the heating device 25 to the regeneration device 10 so that the oxygen concentration of the gas supplied to the regeneration device 10 is 0.5% or less. .
  • an oxygen concentration measuring means capable of measuring oxygen concentration may be provided at the input side of the regeneration device 10 between the heating device 25 and the regeneration device 10.
  • the oxygen concentration measuring means can measure the oxygen concentration of the gas supplied to the regeneration device 10, and the control unit can control the supply of nitrogen from the nitrogen generator 30 based on the measured oxygen concentration value.
  • the oxygen concentration in the regeneration device 10 can be lowered by the nitrogen generator 30, and the risk of explosion of high-concentration volatile organic compounds (VOCs) in the regeneration device 10 can be lowered due to the lowered oxygen concentration.
  • VOCs volatile organic compounds
  • the high-temperature gas discharged from the incinerator 2 can be provided to the boiler 3, and the waste heat gas that has passed through the boiler 3 can be discharged to the outside through the stack 5.
  • an exhaust fan 40 may be provided at the front of the stack 5, and the gas that has passed through the incinerator 2 and the boiler 3 is sucked in by the exhaust fan 40 to exhaust the stack 5. It can be discharged to the outside through
  • the nitrogen injected from the nitrogen generator 30 can flow along the circulation passage (f12), and when the nitrogen passes through the incinerator (2) and boiler (3) and is discharged to the outside, it is caused by a combustion reaction of nitrogen. Harmful nitrogen oxides ( NO
  • a selective catalytic reduction SCR; Selective Catalyst Reduction (40) to reduce or purify nitrogen oxides ( NO).
  • the selective catalytic reduction device 40 is a zeolite catalyst such as aluminosilicate doped with iron or copper, or a vanadium-based catalyst doped with titania with vanadium supported on a carrier such as ceramic honeycomb, and urea, a reducing agent, is exhausted. It is converted into ammonia by the heat of the gas, and nitrogen oxides ( NO x ) are converted into nitrogen gas (N 2 ) through a catalytic reaction between nitrogen oxides (NO ) and water (H 2 O), nitrogen oxides in the exhaust gas can be reduced.
  • a zeolite catalyst such as aluminosilicate doped with iron or copper, or a vanadium-based catalyst doped with titania with vanadium supported on a carrier such as ceramic honeycomb, and urea, a reducing agent
  • the volatile organic compound treatment system 1 has a bypass connected to the exhaust passage f3 via the heat exchanger 20 at the rear end of the incinerator 2. May include Euro (f2).
  • the bypass flow path (f2) may be formed to bypass the boiler (3).
  • the branch flow path (f11) is branched between the incinerator (2) and the boiler (3) to form a path for leading the waste heat gas to the heat exchanger (20), and the branch flow path (f11) is formed to extend.
  • the bypass flow path f2 may be branched between the incinerator 2 and the boiler 3, pass through the heat exchanger 20, and then form a path for guiding the waste heat gas to the rear end of the boiler 3.
  • the high-temperature waste heat gas discharged from the incinerator 2 flows into the heat exchanger 20, shares heat with the outside air supplied by the first fan 21, and is then connected to the rear end of the boiler 3. It can be discharged to the outside through the stack 5 along the exhaust flow path f3.
  • a valve (not shown) that opens and closes the flow path in response to a control command from the controller may be provided on the flow path discharged to the outside along the exhaust flow path f3.
  • a second fan 22 may be provided to inject purified air into the bypass passage f2.
  • the second fan 22 may supply purified air to the branch flow path f11 between the branch point between the incinerator 2 and the boiler 3 and the heat exchanger 20.
  • the second fan 22 lowers the concentration of harmful substances by injecting purified air when the high-temperature waste heat gas discharged from the incinerator 2 is discharged to the outside, thereby forming the bypass flow path f2 and the exhaust flow path ( By sequentially flowing f3), the pollution level of air discharged to the outside can be reduced.

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Abstract

La présente invention concerne un système de traitement de composé organique volatil comprenant : un dispositif de régénération dans lequel au moins un filtre à COV désorbe un composé organique volatil pré-adsorbé afin de régénérer le filtre à COV, le filtre à COV correspondant à un filtre formé de charbon actif et ayant une forme en nid d'abeilles ; un échangeur de chaleur pour échanger de la chaleur avec l'air externe au moyen de la chaleur perdue produite à partir d'un incinérateur et fournir l'air externe chauffé par échange de chaleur au dispositif de régénération ; et un générateur d'azote ménagé entre le dispositif de régénération et l'échangeur de chaleur et fournissant de l'azote au dispositif de régénération.
PCT/KR2023/000494 2022-04-25 2023-01-11 Système de traitement de composé organique volatil pour la régénération et le traitement d'un filtre en nid d'abeilles à charbon actif au moyen de la chaleur perdue d'une installation d'incinération WO2023210923A1 (fr)

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