WO2014034742A1 - 排ガス浄化設備及びその運転制御方法 - Google Patents

排ガス浄化設備及びその運転制御方法 Download PDF

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Publication number
WO2014034742A1
WO2014034742A1 PCT/JP2013/073054 JP2013073054W WO2014034742A1 WO 2014034742 A1 WO2014034742 A1 WO 2014034742A1 JP 2013073054 W JP2013073054 W JP 2013073054W WO 2014034742 A1 WO2014034742 A1 WO 2014034742A1
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Prior art keywords
exhaust gas
harmful components
heat storage
damper
air
Prior art date
Application number
PCT/JP2013/073054
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English (en)
French (fr)
Japanese (ja)
Inventor
勝也 中山
Original Assignee
新東工業株式会社
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Priority to CN201380037794.2A priority Critical patent/CN104487153B/zh
Priority to JP2014533056A priority patent/JP6191832B2/ja
Publication of WO2014034742A1 publication Critical patent/WO2014034742A1/ja

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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
    • B01D53/34—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
    • B01D53/8693—After-treatment of removed components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—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
    • 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
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/02—Arrangements of regenerators
    • 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
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/60—Sorption with dry devices, e.g. beds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/15022—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber using pre-purging regenerator beds
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to an exhaust gas purification equipment for purifying exhaust gas containing flammable harmful components and an operation control method thereof.
  • Exhaust gas containing flammable odorous components or volatile organic compounds such as volatile organic compounds discharged from various production facilities and treatment facilities is usually supplied to an exhaust gas purification facility and made harmless from the viewpoint of pollution prevention. Later it was released into the atmosphere.
  • Patent Document 1 An example of this exhaust gas purification equipment is described in Patent Document 1.
  • a plurality of pairs of dampers provided respectively in the plurality of heat storage chambers of a heat storage type exhaust gas purification apparatus having a plurality of heat storage chambers for exhaust gases containing flammable harmful components, respectively. It opens and closes in conjunction, and high temperature air containing flammable harmful components discharged from the adsorption removal device is supplied to and discharged from multiple heat storage chambers to burn and remove the flammable harmful components. It has become.
  • the present invention has been made to solve the above-described problems of the prior art, and when a plurality of sets of dampers of a heat storage type exhaust gas purification device of an exhaust gas purification facility are opened and closed in conjunction with each other, these dampers are provided.
  • a first invention of the present invention is an adsorption / removal device comprising an adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas, wherein the exhaust gas contains combustible harmful components.
  • the adsorbent adsorbs and removes flammable harmful components from the exhaust gas, and supplies the adsorbent with high-temperature desorption air to desorb the flammable harmful components adsorbed on the adsorbent.
  • An adsorption / removal device and a regenerative exhaust gas purification device that purifies combustible harmful components by burning exhaust air containing combustible harmful components discharged from the adsorption / removal device.
  • Each of the heat storage chambers and the combustion chambers connected to the even number of heat storage chambers, and the even number of heat storage chambers are opened / closed by interlocking a plurality of pairs of dampers provided in pairs.
  • Wastewater supplied from one of the Regenerative exhaust gas purification device that purifies flammable harmful components contained in the exhaust air by burning air in the combustion chamber, and exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and the regenerative exhaust gas Piping connected to each heat storage chamber of the purification device, and in order from the upstream of the piping, a shut-off damper that shuts off the supply of exhaust air, an outside air intake damper that takes outside air into the pipe, and exhaust air are supplied
  • the outside air intake damper is opened and the outside air is taken into the pipe, and the shut-off damper is closed and the suction removal device is closed.
  • the outside air intake damper and shut-off damper so that the supply of desorption air to the adsorbent is interrupted, and let the taken outside air pass through each of the open dampers.
  • the outside air intake damper is opened and does not contain any flammable harmful components. Intakes outside air, shuts off the damper and closes the supply of hot desorption air to the adsorbent, and passes the introduced outside air to each of the open dampers. It is possible to prevent air from being discharged into the atmosphere without burning and removing the combustible harmful components.
  • the concentration of the flammable harmful component contained in the exhaust air discharged from the adsorption removal device is the concentration of the flammable harmful component contained in the exhaust gas supplied to the adsorption removal device. Higher concentration.
  • the concentration of the combustible harmful component contained in the exhaust air discharged from the adsorption removal device is the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. Therefore, combustible harmful components can be efficiently burned and removed by the regenerative exhaust gas purification device.
  • the first invention of the present invention preferably further includes a densitometer for measuring the concentration of flammable harmful components in the exhaust air, and the control device is configured to measure the combustibility in the exhaust air measured by the densitometer.
  • the concentration of harmful components is equal to or higher than a preset concentration
  • the outside air intake damper is operated to take in outside air from the outside air intake damper and dilute the combustible harmful components.
  • the concentration of the flammable harmful component in the exhaust air is equal to or higher than the preset concentration
  • the outside air is taken in and diluted from the outside air intake damper. It is possible to prevent an explosion or the like from occurring due to the concentration of the flammable harmful component being too high.
  • a second aspect of the present invention is an adsorption / removal device having an adsorbent capable of adsorbing / desorbing combustible harmful components contained in exhaust gas, and combusting exhaust air containing combustible harmful components discharged from the adsorption / removal device.
  • a heat storage type exhaust gas purification device that purifies flammable harmful components, and is provided in pairs of even number of heat storage chambers, combustion chambers connected to these even number of heat storage chambers, and even number of heat storage chambers.
  • the heat storage type exhaust gas purification device provided with a plurality of sets of dampers, and the exhaust air discharged from the adsorption / removal device are supplied to the heat storage type exhaust gas purification device and connected to each heat storage chamber of the heat storage type exhaust gas purification device.
  • a shut-off damper for shutting off the supply of exhaust air, an outside air intake damper for taking outside air into the pipe, and a blower for supplying exhaust air are arranged in order from the upstream of the pipe.
  • piping An operation control method for a gas purification facility, wherein exhaust gas containing flammable harmful components is supplied to an adsorbent of an adsorption removal device, and the adsorbent adsorbs and removes flammable harmful components from the exhaust gas.
  • a step of supplying high-temperature desorption air to desorb flammable harmful components adsorbed on the adsorbent a step of supplying exhaust air discharged from the adsorption removal device to the regenerative exhaust gas treatment device through the piping, and heat storage
  • exhaust air supplied from one of the even number of heat storage chambers is combusted in the combustion chamber to purify flammable harmful components contained in the exhaust air
  • the outside air intake damper is opened, the outside air is taken into the pipe, the shut-off damper is closed, and the adsorption / removal device is attached to and detached from the adsorbent. It interrupts the supply of, and a step of passing the respective the captured ambient air in an open state of the damper.
  • the concentration of the combustible harmful component contained in the exhaust air discharged from the adsorption removal device is greater than the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. Is also highly concentrated.
  • the exhaust gas purification equipment has a concentration meter for measuring the concentration of combustible harmful components in the exhaust air, and further combustible in the exhaust air measured by the concentration meter.
  • concentration of the toxic harmful component is equal to or higher than a preset concentration
  • the method includes a step of diluting the flammable harmful component by taking in the outside air from the outside air intake damper.
  • the exhaust gas purification installation by the embodiment of this invention and its operation control method are demonstrated.
  • symbol 1 shows the exhaust gas purification equipment 1 by embodiment of this invention, and this exhaust gas purification equipment 1 is the continuous regeneration type concentration apparatus 2 which is an adsorption removal apparatus, and this continuous regeneration type concentration apparatus.
  • a heat storage type exhaust gas purification device 4 that combusts and removes flammable harmful components of the exhausted air discharged from the air.
  • the continuous regeneration type concentrator 2 supplies an adsorbent 6 capable of adsorbing and desorbing flammable harmful components, and supplying desorption air having a high temperature to the adsorbent 6 to remove the flammable harmful components from the adsorbent 6.
  • a detachable air supply device 8 the combustible harmful component contained in the exhaust gas means a combustible malodor component such as toluene or ethyl acetate or a volatile organic compound.
  • the continuous regeneration type concentrator 2 is connected to a blower 10 for sending exhaust gas into the interior, so that exhaust gas is supplied to the adsorbent 6.
  • the heat storage type exhaust gas purifying device 4 includes an even number of heat storage chambers, that is, two heat storage chambers of the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, and a combustion chamber provided and connected between these heat storage chambers. 16.
  • the heat storage chamber 1 tower 12 includes a supply damper 18 a that supplies gas to the heat storage chamber 1 tower 12 and an exhaust damper 20 a that discharges gas from the heat storage chamber 1 tower 12.
  • the second heat storage chamber 14 includes a supply damper 18 b that supplies gas to the second heat storage chamber 14 and an exhaust damper 20 b that discharges gas from the second heat storage chamber 14.
  • FIG. 1 shows a case where the supply damper 18a and the discharge damper 20b are in an open state and the supply damper 18b and the discharge damper 20a are in a closed state.
  • the adsorbent 6 of the continuous regeneration type concentrator 2 is formed in a rotatable cylindrical shape carrying an adsorbent such as activated carbon or zeolite.
  • the adsorbent 6 includes an adsorption zone 6a for adsorbing and removing combustible harmful components from the exhaust gas, a regeneration zone 6b for removing the combustible harmful components adsorbed from the adsorbent 6, and a cooling zone for cooling the adsorbent 1 in the rotation direction. 6c is provided so that the combustible and harmful components can be continuously adsorbed and desorbed by rotation.
  • the adsorbent 6 is cooled by a part of the exhaust gas sent to the continuous regeneration type concentrator 2 by the blower 10.
  • the cooling zone 6 c is connected to the above-described detachable air supply device 8 through the duct 22.
  • the detachable air supply device 8 includes a mixing chamber 24 and a supply duct 26.
  • the mixing chamber 26 is connected to the combustion chamber 16 of the regenerative exhaust gas purification device 4 via a hot bypass damper 28, and is connected to the regeneration zone 6 b of the adsorbent 6 via a supply duct 26.
  • the air discharged from the cooling zone 6 c is sent to the mixing chamber 24 through the duct 22, mixed with the hot gas supplied from the combustion chamber 16 through the hot bypass damper 28 in the mixing chamber 24, heated, and supplied duct. 26 is supplied to the regeneration zone 6 b of the adsorbent 6 as desorption air for desorbing the combustible harmful components adsorbed on the adsorbent 6 from the adsorbent 6.
  • the supply duct 26 is provided with a temperature sensor 30, and the control device 32 (see FIG. 2) adjusts the opening degree of the hot bypass damper 28 based on the temperature measured by the temperature sensor 30.
  • the mixing ratio between the air discharged from the cooling zone 6 c and the high-temperature gas supplied from the combustion chamber 16 can be controlled.
  • a discharge duct 34 for discharging exhaust air containing combustible harmful components removed in the regeneration zone 6b of the adsorbent 6 is connected downstream of the regeneration zone 6b.
  • a shut-off damper 36 is connected downstream of the discharge duct 34, and switching between passage and shut-off of the exhaust air discharged from the regeneration zone 6b of the adsorbent 6 is possible.
  • An outside air intake damper 38 that can take outside air into the discharge duct 34 is provided downstream of the shut-off damper 36, and a blower 40 is provided downstream of the outside air intake damper 38. The discharged air is blown by the suction force of the blower 40.
  • the discharge duct 34 is provided with the shut-off damper 36, the outside air intake damper 38, and the blower 40 from the upstream, and is branched and connected to the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14.
  • the shut-off damper 36 is provided with the shut-off damper 36, the outside air intake damper 38, and the blower 40 from the upstream, and is branched and connected to the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14.
  • the exhaust gas discharge ports of the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14 are connected to the exhaust duct 46 via two discharge dampers 20 a and 20 b and a bifurcated duct 44.
  • the exhaust duct 46 is connected to the combustion chamber 16 by a hot bypass damper 48 that can be opened and closed.
  • the temperature sensors 50 and 52 are respectively provided in the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, and when the temperature measured by these temperature sensors 50 and 52 exceeds a predetermined temperature, the control device 32, the hot bypass damper 48 is opened, and excess heat can be released from the exhaust duct 46.
  • a concentration meter 54 for measuring the concentration of the flammable harmful component is attached to the discharge duct 34, and the control device 32 (see FIG. 2) is blocked by the concentration of the flammable harmful component measured by the concentration meter 54. The opening and closing of the damper 36 is controlled.
  • the combustion chamber 16 is provided with a burner 56 and a temperature sensor 58 for measuring the temperature in the combustion chamber 16.
  • the ignition and extinguishing control of the burner 56 is performed based on the temperature measured by the temperature sensors 50 and 52 described above.
  • the temperature sensor 58 detects an abnormal increase in the temperature of the combustion chamber 16.
  • bifurcated duct 42 and the bifurcated duct 44 are provided with temperature sensors 60 and 62, respectively.
  • the measured values measured by the temperature sensor 30, the densitometer 54, the temperature sensors 50 and 52, the temperature sensor 58, and the temperature sensors 60 and 62 are input to the control device 32, Based on these measured values, as will be described later, the control device 32 controls the hot bypass damper 28, the cutoff damper 36, the hot bypass damper 48, the burner 56, and the supply dampers 18a and 18b and the discharge dampers 20a and 20b. It has come to be.
  • the combustible harmful component adsorbed by the adsorbent 6 is sent to the regeneration zone 6b by rotation, and is desorbed from the adsorbent 6 by desorption air supplied from the supply duct 26 of the desorption air supply device 8 in the regeneration zone 6b. Removed.
  • the combustible harmful component removed from the adsorbent 6 is contained in the desorption air, and is discharged to the discharge duct 34 as exhaust air containing the combustible harmful component.
  • the exhaust air contains flammable harmful components at a higher concentration than the exhaust gas supplied to the continuous regeneration type concentrator 2.
  • the adsorbent 6 heated in the regeneration zone 6b is cooled by the exhaust gas in the cooling zone 6c and is in a state where it can efficiently adsorb combustible harmful components.
  • the air discharged from the cooling zone 6 c is mixed with the high-temperature gas supplied from the combustion chamber 16 in the mixing chamber 24 and heated, and then supplied to the regeneration zone 6 b of the adsorbent 6 through the supply duct 26.
  • Exhaust air containing flammable harmful components discharged to the discharge duct 34 passes through the open cutoff damper 36, and sequentially passes through the outside air intake damper 38, the blower 40, the bifurcated duct 42, and the open supply damper 18a. Then, it is supplied to the heat storage chamber 1 tower 12 of the heat storage type exhaust gas purification device 4.
  • Exhaust air is heated in the heat storage chamber 1 tower 12 and then flows into the combustion chamber 16 where the flammable harmful components are removed by combustion and purified. Since the burner 10a is provided in the combustion chamber 16, the temperature of the combustion chamber 16 can be maintained at a temperature at which combustible harmful components can be sufficiently removed by combustion.
  • the purified gas is stored in the two heat storage chambers 14, and then sequentially passes through the open exhaust damper 20 b and the bifurcated duct 44 and is discharged from the exhaust duct 46.
  • the direction in which the exhaust gas flows is switched after processing the exhaust gas for a certain period of time. It is necessary to That is, the supply damper 18a so that the exhaust gas flowing in the order of the heat storage chamber 1 tower 12 ⁇ the combustion chamber 16 ⁇ the heat storage chamber 2 tower 14 flows in the order of the heat storage chamber 2 tower 14 ⁇ the combustion chamber 16 ⁇ the heat storage chamber 1 tower 12. , 18b and the discharge dampers 20a, 20b need to be switched.
  • the switching of the exhaust gas flow direction is not the processing time, but the exhaust gas inlet temperature T1 measured by the temperature sensor 60 provided in the bifurcated duct 42 and the exhaust gas measured by the temperature sensor 62 provided in the bifurcated duct 44. You may make it carry out based on the difference with outlet temperature T2.
  • Switching of the supply dampers 18a and 18b and the discharge dampers 20a and 20b is performed according to the following procedure. First, the outside air intake damper 38 is opened to take in outside air.
  • the hot bypass damper 28 and the shut-off damper 36 are closed, and the supply of desorption air to the adsorbent 6 is interrupted. Subsequently, the supply damper 18a and the discharge damper 20b are closed, and the supply damper 18b and the discharge damper 20a are opened to switch the gas flow direction.
  • the hot bypass damper 28 and the shut-off damper 36 are opened, the supply of the desorption air to the adsorbent 6 is resumed, and the outside air intake damper 38 is closed to stop taking in outside air.
  • the exhausted air flows from the supply damper 18b in the open state into the combustion chamber 16 through the two heat storage chambers 14 and burns and removes the flammable harmful components.
  • the exhaust gas passes through the chamber 1 tower 12, the open discharge damper 20 and the bifurcated duct 44 in order, and is discharged from the exhaust duct 46.
  • the supply dampers 18a and 18b and the discharge dampers 20a and 20b are opened and closed in conjunction with each other and switched, the supply dampers 18a and 18b and the discharge dampers 20a and 20b are simultaneously opened.
  • the closed state the supply of the desorption air to the adsorbent 6 is interrupted, the outside air intake damper 38 is opened, the outside air containing no flammable harmful components is taken in, and the introduced outside air is supplied to the supply dampers 18a and 18b.
  • the exhaust dampers 20a and 20b can be prevented from being discharged into the atmosphere without the combustible harmful components being removed by combustion. it can.
  • the supply dampers 18a and 18b and the discharge dampers 20a and 20b can be quickly switched with a simple structure and a small number of operations.
  • supply dampers 18a and 18b and the discharge dampers 20a and 20b can be opened and closed in conjunction with each other without switching the hot bypass damper 28 to the closed state.
  • the concentration of combustible harmful components in the exhaust air is measured by the densitometer 54, and when the measured concentration is equal to or higher than a preset concentration, the opening degree of the outside air intake damper 38 is adjusted to remove the outside air. It can be supplied to exhaust air to dilute flammable harmful components. Thereby, in the heat storage type exhaust gas purification device 4, it is possible to prevent the explosion of the combustible harmful component of the exhaust air from being too high.
  • the exhaust gas purification facility 1 and the operation control method of the exhaust gas purification facility 1 switching of opening and closing of a plurality of dampers, that is, the supply dampers 18a and 18b and the exhaust dampers 20a and 20b is performed.
  • the damper to be switched becomes open at the same time, the outside air intake damper 38 is opened to take in outside air, and the shut-off damper 36 is closed to supply hot desorption air to the adsorbent.
  • the introduced outside air can be passed through each of the open dampers, so that the exhaust air containing the combustible harmful components is discharged into the atmosphere without removing the combustible harmful components. Can be prevented.
  • the exhaust gas purification facility according to the above-described embodiment can be applied even when the heat storage type exhaust gas purification device includes four or more even number of heat storage chambers.
  • the heat storage type exhaust gas purification apparatus including an even number of heat storage chambers has a structure that does not include a heat storage chamber for purging.
  • the heat storage type exhaust gas purifying apparatus according to this modification includes four heat storage chambers 1 tower 70, two heat storage chambers 72, three heat storage chambers 74, and four heat storage chambers 76.
  • the damper is switched as follows.
  • the heat storage chamber 3 tower 74 and the heat storage chamber 4 tower 76 have the same structure as the heat storage chamber 1 tower 70 and the heat storage chamber 2 tower 72, and the supply damper 18c, the exhaust damper 20c, the temperature sensor 78, the supply damper 18d, Each includes a discharge damper 20d and a temperature sensor 80.
  • exhaust air containing combustible harmful components burns and removes the combustible harmful components without providing a heat storage chamber for purging. It is possible to prevent being discharged into the atmosphere without being discharged. Thereby, exhaust gas purification equipment can be further reduced in size. Further, since the combustion chamber can be made small, fuel for maintaining the temperature can be reduced.
  • the exhaust gas purification facility 80 does not have a continuous regenerative concentration device, but includes a heat storage type exhaust gas purification device 4. For this reason, in the exhaust gas purification facility 80, exhaust gas containing combustible harmful components discharged from upstream facilities (not shown) such as various production facilities and treatment facilities is directly discharged to the discharge duct 34, and this discharge It is supplied to the heat storage type exhaust gas purification device 4 through the duct 34.
  • a storage tank 82 for temporarily storing exhaust gas is provided on the upstream side of the shutoff damper 36 of the discharge duct 34, and an open / close valve 84 is attached to the storage tank 82. This on-off valve 84 is normally kept closed.
  • the exhaust gas purification equipment 80 As in the equipment according to the embodiment of FIG. 1, when the supply dampers 18a and 18b and the exhaust dampers 20a and 20b are simultaneously opened, the outside air intake damper 38 is opened and the outside air is discharged into the exhaust duct. 34, and the shutoff damper 36 is closed so that the exhaust gas from the upstream facility is not supplied to the regenerative exhaust gas purification device 4. Thereby, the taken-in outside air passes through the supply dampers 18a and 18b and the discharge dampers 20a and 20b in the open state.
  • the storage tank 82 is opened to temporarily store the exhaust gas from the upstream facility in the storage tank 82.
  • the exhaust gas purification facility 80 it is not necessary to stop the operation of the upstream facility even when all of the dampers are open.
  • exhaust gas purifying device 80 even when no continuous regenerative concentrating device is provided, exhaust gas containing combustible harmful components discharged from the upstream equipment is temporarily stored in the storage tank 82. Therefore, when the damper is simultaneously opened, the exhaust gas containing the combustible harmful component is not discharged into the atmosphere without removing the combustible harmful component by combustion.

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  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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WO2017183326A1 (ja) * 2016-04-20 2017-10-26 日産自動車株式会社 脱臭装置
JP6367454B1 (ja) * 2017-12-01 2018-08-01 中外炉工業株式会社 排ガス処理システム
WO2021004730A1 (de) * 2019-07-05 2021-01-14 Ctp Chemisch Thermische Prozesstechnik Gmbh Verfahren und anlage zur reinigung von mit organischen schadstoffen beladener abgase
WO2021013756A1 (en) * 2019-07-19 2021-01-28 Busser Beheer B.V. Mobile degasification system

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KR102436711B1 (ko) * 2022-01-07 2022-08-26 주식회사 이앤비코리아 퍼지 수단이 구비된 농축 2-베드 축열식 연소장치

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WO2017183326A1 (ja) * 2016-04-20 2017-10-26 日産自動車株式会社 脱臭装置
JP6367454B1 (ja) * 2017-12-01 2018-08-01 中外炉工業株式会社 排ガス処理システム
WO2021004730A1 (de) * 2019-07-05 2021-01-14 Ctp Chemisch Thermische Prozesstechnik Gmbh Verfahren und anlage zur reinigung von mit organischen schadstoffen beladener abgase
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JPWO2014034742A1 (ja) 2016-08-08
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