WO2014034742A1 - Exhaust gas-purifying equipment and operation control method therefor - Google Patents

Exhaust gas-purifying equipment and operation control method therefor 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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WO
WIPO (PCT)
Prior art keywords
exhaust gas
harmful components
heat storage
damper
air
Prior art date
Application number
PCT/JP2013/073054
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French (fr)
Japanese (ja)
Inventor
勝也 中山
Original Assignee
新東工業株式会社
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Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to JP2014533056A priority Critical patent/JP6191832B2/en
Priority to CN201380037794.2A priority patent/CN104487153B/en
Publication of WO2014034742A1 publication Critical patent/WO2014034742A1/en

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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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Abstract

This exhaust gas-purifying equipment (1) comprises: an adsorption removal device (2) provided with an adsorbent capable of adsorbing and desorbing flammable harmful components contained in exhaust gas; a heat-storing exhaust gas-purifying device (4) for burning discharged air containing flammable harmful components that is discharged from the adsorption removal device and purifying the flammable harmful components; piping (34) for supplying discharged air discharged from the adsorption removal device to the heat-storing exhaust gas-purifying device and in which, in order from the upstream side of the piping, a cutoff damper (36) for cutting off the supply of discharged air and an external air intake damper (38) for taking external air into the piping are disposed; and a control device (32) configured so that when the multiple sets of dampers (18a, 18b, 20a, 20b) of the heat-storing exhaust gas-purifying device are simultaneously open, the control device operates the external air intake damper and the cutoff damper so as to open the external air intake damper to take external air into the piping and close the cutoff damper to interrupt the supply of desorption air to the adsorbent in the adsorption removal device, and passes the external air through to the various open dampers.

Description

排ガス浄化設備及びその運転制御方法Exhaust gas purification equipment and operation control method thereof
　本発明は、可燃性有害成分を含有する排ガスを浄化するための排ガス浄化設備及びその運転制御方法に関する。 The present invention relates to an exhaust gas purification equipment for purifying exhaust gas containing flammable harmful components and an operation control method thereof.
　各種の生産設備や処理設備から排出された可燃性悪臭成分あるいは揮発性有機化合物などの可燃性有害成分を含有する排ガスは、公害防止の観点から、通常排ガス浄化設備に供給されて無害化されたのちに大気に放出されている。 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.
　この排ガス浄化設備の一例が特許文献１に記載されている。この特許文献１の排ガス浄化設備においては、可燃性有害成分を含有する排ガスを、複数個の蓄熱室を有する蓄熱式排ガス浄化装置のこれら複数の蓄熱室にそれぞれ設けられた複数対のダンパをそれぞれ連動させて開閉して、可燃性有害成分を含有して吸着除去装置から排出された高温エアを、複数個の蓄熱室に対して供給・排出してその可燃性有害成分を燃焼除去するようになっている。 An example of this exhaust gas purification equipment is described in Patent Document 1. In the exhaust gas purification facility of this 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.
特開２００９－１８３０３号公報JP 2009-18303 A
　しかし、上述した従来の排ガス浄化設備では、蓄熱式排ガス浄化装置の複数対のダンパを連動させて開閉する際に、これらのダンパを同時に開状態にする必要があり、この結果、吸着除去装置から排出された可燃性有害成分を含有する高温の脱着用エアが、その可燃性有害成分を燃焼除去されることなく蓄熱式排ガス浄化装置を通過して大気中に排出されるというおそれがあった。 However, in the above-described conventional exhaust gas purification equipment, when a plurality of pairs of dampers of the regenerative exhaust gas purification device are opened and closed in conjunction with each other, it is necessary to open these dampers at the same time. There was a risk that the high-temperature desorption air containing the combustible harmful components discharged would pass through the regenerative exhaust gas purification device and be discharged into the atmosphere without being burned and removed.
　そこで、本発明は、上記の従来技術の問題点を解決するためになされたものであり、排ガス浄化設備の蓄熱式排ガス浄化装置の複数組のダンパを連動させて開閉する際に、これらのダンパが同時に開状態となるときに、可燃性有害成分を含有する排ガスがその可燃性有害成分を燃焼除去されずに大気中に排出されることのない排ガス浄化設備及びその運転制御方法を提供することを目的とする。 Therefore, 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. To provide an exhaust gas purification equipment and an operation control method thereof in which exhaust gas containing a combustible harmful component is not discharged into the atmosphere without being burned and removed when the gas is simultaneously opened. With the goal.
　上記の目的を達成するために、本発明の第１の発明は、排ガスに含まれる可燃性有害成分を吸脱着可能な吸着体を備えた吸着除去装置であって、可燃性有害成分を含む排ガスを吸着体に供給してこの吸着体により可燃性有害成分を吸着して排ガスから除去すると共に、吸着体に高温の脱着用エアを供給して吸着体に吸着された可燃性有害成分を脱着する吸着除去装置と、この吸着除去装置から排出される可燃性有害成分を含む排出エアを燃焼して可燃性有害成分を浄化する蓄熱式排ガス浄化装置であって、この蓄熱式排ガス浄化装置が、偶数個の蓄熱室及びこれらの偶数個の蓄熱室と接続された燃焼室を備え、偶数個の蓄熱室にそれぞれ一対ずつ設けられた複数組のダンパを連動させて開閉して、偶数個の蓄熱室のいずれかから供給された排出エアを燃焼室において燃焼させてこの排出エアに含まれる可燃性有害成分を浄化する蓄熱式排ガス浄化装置と、吸着除去装置から排出される排出エアを蓄熱式排ガス浄化装置に供給し、蓄熱式排ガス浄化装置の各蓄熱室に接続される配管であって、この配管の上流から順に、排出エアの供給を遮断する遮断ダンパ、外気を配管内に取り込む外気取入ダンパ、及び、排出エアを供給するための送風機が、配設されている配管と、複数組のダンパが同時に開状態になるとき、外気取入ダンパを開状態として外気を配管内に取り込み、遮断ダンパを閉状態として吸着除去装置の吸着体への脱着用エアの供給を中断するように、外気取入ダンバ及び遮断ダンパを操作して、取り込まれた外気を開状態のダンパのそれぞれに対して通過させるようにした制御装置と、を有する。
　このように構成された本発明によれば、複数組のダンパの開閉の切換が行われる際にダンパが同時に開状態になるときは、外気取入ダンパを開状態として可燃性有害成分を含まない外気を取り込み、遮断ダンパを閉状態として吸着体に対する高温の脱着用エアの供給を中断するとともに、導入した外気を開状態のダンパのそれぞれに対して通過させるので、可燃性有害成分を含有する排出エアがその可燃性有害成分を燃焼除去されずに大気中に排出されることを防止することができる。 In order to achieve the above object, 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 When a plurality of sets of dampers are opened simultaneously, 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. Operate 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. Having a control device.
According to the present invention configured as described above, when the dampers are simultaneously opened when switching between opening and closing of the plurality of sets of 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.
　本発明の第１の発明において、好ましくは、吸着除去装置から排出される排出エアに含まれる可燃性有害成分の濃度が、吸着除去装置に供給される前記排ガスに含まれる可燃性有害成分の濃度よりも高濃度である。
　このように構成された本発明によれば、吸着除去装置から排出される排出エアに含まれる可燃性有害成分の濃度が、吸着除去装置に供給される前記排ガスに含まれる可燃性有害成分の濃度よりも高濃度であるので、蓄熱式排ガス浄化装置により可燃性有害成分を効率的に燃焼除去することができる。 In the first invention of the present invention, preferably, 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.
According to the present invention configured as described above, 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.
　本発明の第１の発明は、好ましくは、更に、排出エア中の可燃性有害成分の濃度を測定する濃度計を有し、制御装置は、この濃度計により測定された排出エア中の可燃性有害成分の濃度が、あらかじめ設定された濃度以上のときには、外気取入ダンパを操作して、外気取入ダンパから外気を取り入れて可燃性有害成分を希釈する。
　このように構成された本発明によれば、排出エア中の可燃性有害成分の濃度があらかじめ設定された濃度以上である場合には、外気取入ダンパから外気を取り入れて希釈するので、排気エアの可燃性有害成分の濃度が高すぎて爆発などが発生することを防止することができる。 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. When 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.
According to the present invention configured as described above, when 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.
　本発明の第２の発明は、排ガスに含まれる可燃性有害成分を吸脱着可能な吸着体を備えた吸着除去装置と、この吸着除去装置から排出される可燃性有害成分を含む排出エアを燃焼して可燃性有害成分を浄化する蓄熱式排ガス浄化装置であって、偶数個の蓄熱室と、これらの偶数個の蓄熱室と接続された燃焼室と、偶数個の蓄熱室にそれぞれ一対ずつ設けられた複数組のダンパとを備えた前記蓄熱式排ガス浄化装置と、吸着除去装置から排出される排出エアを蓄熱式排ガス浄化装置に供給し、蓄熱式排ガス浄化装置の各蓄熱室に接続される配管であって、この配管の上流から順に、排出エアの供給を遮断する遮断ダンパ、外気を配管内に取り込む外気取入ダンパ、及び、排出エアを供給するための送風機が、配設されている配管と、を有する排ガス浄化設備の運転制御方法であって、可燃性有害成分を含む排ガスを吸着除去装置の吸着体に供給してこの吸着体により可燃性有害成分を吸着して排ガスから除去すると共に、吸着体に高温の脱着用エアを供給して吸着体に吸着された可燃性有害成分を脱着する工程と、吸着除去装置から排出される排出エアを前記配管により蓄熱式排ガス処理装置に供給する工程と、蓄熱式排ガス処理装置の複数組のダンパを連動させて開閉して、偶数個の蓄熱室のいずれかから供給された排出エアを燃焼室において燃焼させてこの排出エアに含まれる可燃性有害成分を浄化する工程と、複数組のダンパが同時に開状態になるとき、外気取入ダンパを開状態として外気を配管内に取り込み、遮断ダンパを閉状態として吸着除去装置の吸着体への脱着用エアの供給を中断して、取り込まれた外気を開状態のダンパのそれぞれに対して通過させる工程と、を有する。 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. And 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 By opening and closing multiple sets of dampers of the exhaust gas treatment system, 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 And when a plurality of sets of dampers are opened simultaneously, 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.
　本発明の第２の発明において、好ましくは、吸着除去装置から排出される排出エアに含まれる可燃性有害成分の濃度が、吸着除去装置に供給される排ガスに含まれる可燃性有害成分の濃度よりも高濃度である。 In the second invention of the present invention, preferably, 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.
　本発明の第２の発明において、好ましくは、排ガス浄化設備は、排出エア中の可燃性有害成分の濃度を測定する濃度計を有し、更に、この濃度計により測定された排出エア中の可燃性有害成分の濃度が、あらかじめ設定された濃度以上のときには、外気取入ダンパから外気を取り入れて可燃性有害成分を希釈する工程を有する。 In the second invention of the present invention, preferably, 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. When the 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.
本発明の実施形態による排ガス浄化設備を示す全体構成図である。It is a whole lineblock diagram showing exhaust gas purification equipment by an embodiment of the present invention. 本発明の実施形態による排ガス浄化設備の制御装置を示すブロック図である。It is a block diagram which shows the control apparatus of the exhaust gas purification equipment by embodiment of this invention. 本発明の実施形態による蓄熱式排ガス浄化装置の変更例を示す説明図である。It is explanatory drawing which shows the example of a change of the thermal storage type exhaust gas purification apparatus by embodiment of this invention. 本発明の他の実施形態による排ガス浄化設備を示す全体構成図である。It is a whole block diagram which shows the exhaust gas purification equipment by other embodiment of this invention.
　以下、添付図面を参照して、本発明の実施形態による排ガス浄化設備及びその運転制御方法を説明する。 Hereinafter, an exhaust gas purification facility and an operation control method thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings.
　先ず、図１及び図２を参照して、本発明の実施形態による排ガス浄化設備及びその運転制御方法を説明する。
　図１に示すように、符号１は、本発明の実施形態による排ガス浄化設備１を示し、この排ガス浄化設備１は、吸着除去装置である連続再生式濃縮装置２と、この連続再生式濃縮装置２から排出された排出エアの可燃性有害成分を燃焼除去する蓄熱式排ガス浄化装置４と、を備えている。 First, with reference to FIG.1 and FIG.2, the exhaust gas purification installation by the embodiment of this invention and its operation control method are demonstrated.
As shown in FIG. 1, the code | 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. And a heat storage type exhaust gas purification device 4 that combusts and removes flammable harmful components of the exhausted air discharged from the air.
　連続再生式濃縮装置２は、可燃性有害成分を吸脱着可能な吸着体６と、この吸着体６に対して高温である脱着用エアを供給し、吸着体６から可燃性有害成分を除去するための脱着用エア供給装置８と、を備えている。ここで、排ガスに含有されている可燃性有害成分とは、トルエン、酢酸エチルなどの可燃性悪臭成分あるいは揮発性有機化合物などをいう。 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. And a detachable air supply device 8. Here, 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.
　連続再生式濃縮装置２には内部に排ガスを送り込む送風機１０が接続されており、排ガスが吸着体６に供給されるようになっている。 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.
　一方、蓄熱式排ガス浄化装置４は、偶数個の蓄熱室、即ち、蓄熱室１塔１２及び蓄熱室２塔１４の２つの蓄熱室と、これら蓄熱室の間に設けられ且つ接続された燃焼室１６と、を備えている。蓄熱室１塔１２は、蓄熱室１塔１２にガスを供給する供給ダンパ１８ａと蓄熱室１塔１２からガスを排出する排出ダンパ２０ａと、を備えている。蓄熱室２塔１４は、蓄熱室２塔１４にガスを供給する供給ダンパ１８ｂと蓄熱室２塔１４からガスを排出する排出ダンパ２０ｂと、を備えている。なお、図１では、供給ダンパ１８ａ及び排出ダンパ２０ｂが開状態、供給ダンパ１８ｂ及び排出ダンパ２０ａが閉状態である場合を示している。 On the other hand, 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.
　連続再生式濃縮装置２の吸着体６は、活性炭やゼオライトなどの吸着剤を担持した回転可能な円筒状に形成されている。吸着体６は、回転方向に順に、排ガスから可燃性有害成分を吸着除去する吸着ゾーン６ａ、吸着体６から吸着された可燃性有害成分を除去する再生ゾーン６ｂ及び吸着体１を冷却する冷却ゾーン６ｃを備え、回転により可燃性有害成分を連続的に吸脱着することができるようになっている。 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.
　吸着体６の冷却ゾーン６ｃでは、送風機１０により連続再生式濃縮装置２に送り込まれた排ガスの一部により、吸着体６の冷却が行われるようになっている。冷却ゾーン６ｃは、ダクト２２を介して、上述した脱着用エア供給装置８に接続されている。 In the cooling zone 6 c of the adsorbent 6, 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.
　脱着用エア供給装置８は、混合チャンバー２４と、供給ダクト２６と、を備えている。
　混合チャンバー２６は、ホットバイパスダンパ２８を介して蓄熱式排ガス浄化装置４の燃焼室１６に接続されており、供給ダクト２６を介して吸着体６の再生ゾーン６ｂに接続されている。 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.
　冷却ゾーン６ｃから排出されたエアは、ダクト２２を介して混合チャンバー２４に送られ、混合チャンバー２４においてホットバイパスダンパ２８を介して燃焼室１６から供給される高温ガスと混合、加熱され、供給ダクト２６を介して吸着体６の再生ゾーン６ｂに、吸着体６に吸着された可燃性有害成分を吸着体６から脱着するための脱着用エアとして供給される。 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.
　ここで、供給ダクト２６には、温度センサ３０が設けられており、この温度センサ３０で測定された温度に基づいて、制御装置３２（図２参照）が、ホットバイパスダンパ２８の開度を調整し、冷却ゾーン６ｃから排出されたエアと燃焼室１６から供給される高温ガスとの混合比を制御できるようになっている。 Here, 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. In addition, 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.
　再生ゾーン６ｂの下流には、吸着体６の再生ゾーン６ｂにおいて除去した可燃性有害成分を含有する排出エアを排出する排出ダクト３４が接続されている。 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.
　排出ダクト３４の下流には、遮断ダンパ３６が接続してあり、吸着体６の再生ゾーン６ｂから排出された排出エアの通過・遮断の切換が可能となっている。 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.
　遮断ダンパ３６の下流には、外気を排出ダクト３４内に取り入れ可能な外気取入ダンパ３８が設けられ、さらに、外気取入ダンパ３８の下流には送風機４０が設けられている。排出エアは、この送風機４０の吸引力により送風される。 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.
　上述したように、排出ダクト３４には、上流から、遮断ダンパ３６、外気取入ダンパ３８、送風機４０が配設されており、蓄熱室１塔１２及び蓄熱室２塔１４に分岐して接続される二股ダクト４２及び２個の供給ダンパ１８ａ，１８ｂを介して蓄熱式排ガス浄化装置４の蓄熱室１塔１２及び蓄熱室２塔１４の排ガス供給口にそれぞれ接続されている。 As described above, 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. Are connected to the exhaust gas supply ports of the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14 of the heat storage type exhaust gas purification device 4 through the bifurcated duct 42 and the two supply dampers 18a and 18b, respectively.
　蓄熱室１塔１２及び蓄熱室２塔１４の排ガス排出口は、２個の排出ダンパ２０ａ，２０ｂ及び二股ダクト４４を介して排気ダクト４６に接続されている。 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.
　排気ダクト４６は、開閉可能なホットバイパスダンパ４８により燃焼室１６と接続されている。蓄熱室１塔１２及び蓄熱室２塔１４にそれぞれ温度センサ５０，５２が設けられており、これらの温度センサ５０，５２により測定された温度が、所定の温度を超えた場合には、制御装置３２により、ホットバイパスダンパ４８を開状態とし、排気ダクト４６から余剰な熱を逃がすことができるようになっている。 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.
　排出ダクト３４には、可燃性有害成分の濃度を測定する濃度計５４が装着してあり、この濃度計５４により測定された可燃性有害成分の濃度により、制御装置３２（図２参照）が遮断ダンパ３６の開閉を制御するようになっている。 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.
　また、燃焼室１６には、バーナ５６及び燃焼室１６内の温度を測定する温度センサ５８が設けられている。このバーナ５６の点火及び消火の制御は上述した温度センサ５０，５２により測定された温度に基づいて行われる。また、温度センサ５８は、燃焼室１６の温度の異常上昇を検知するようになっている。 Also, 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.
　さらに、二股ダクト４２及び二股ダクト４４には、それぞれ、温度センサ６０，６２が設けられている。 Further, the bifurcated duct 42 and the bifurcated duct 44 are provided with temperature sensors 60 and 62, respectively.
　ここで、図２に示すように、温度センサ３０、濃度計５４、温度センサ５０，５２、温度センサ５８、及び、温度センサ６０，６２により測定された測定値は、制御装置３２に入力され、これらの測定値に基づいて、後述するように、制御装置３２により、ホットバイパスダンパ２８、遮断ダンパ３６、ホットバイパスダンパ４８、バーナ５６、及び、供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂが制御されるようになっている。 Here, as shown in FIG. 2, 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.
　次に、上述した本実施形態による排ガス浄化設備における運転制御方法を説明する。 Next, the operation control method in the exhaust gas purification equipment according to the above-described embodiment will be described.
　可燃性有害成分を含有する排ガスを送風機１０により連続再生式濃縮装置２に送り込むと、排ガスは回転する吸着体６の吸着ゾーン６ａにおいて可燃性有害成分が吸着除去された後に外気に排出される。 When exhaust gas containing flammable harmful components is sent to the continuous regeneration type concentration device 2 by the blower 10, the exhaust gas is discharged to the outside after the flammable harmful components are adsorbed and removed in the adsorption zone 6a of the rotating adsorbent 6.
　吸着体６に吸着された可燃性有害成分は、回転により再生ゾーン６ｂに送られ、再生ゾーン６ｂにおいて、脱着用エア供給装置８の供給ダクト２６から供給される脱着用エアによって吸着体６から脱着除去される。吸着体６から除去された可燃性有害成分は脱着用エア中に含有され、可燃性有害成分を含有する排出エアとして排出ダクト３４へ排出される。ここで、排出エアは、連続再生式濃縮装置２に供給される排ガスよりも可燃性有害成分を高濃度で含有している。 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. Here, the exhaust air contains flammable harmful components at a higher concentration than the exhaust gas supplied to the continuous regeneration type concentrator 2.
　再生ゾーン６ｂにおいて加熱された吸着体６は、冷却ゾーン６ｃにおいて排ガスにより冷却されて可燃性有害成分を効率的に吸着可能な状態となる。 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.
　冷却ゾーン６ｃから排出されたエアは、混合チャンバー２４において燃焼室１６から供給される高温ガスと混合され加熱された後、供給ダクト２６を介して吸着体６の再生ゾーン６ｂに供給される。 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.
　排出ダクト３４へ排出された可燃性有害成分を含有する排出エアは、開状態の遮断ダンパ３６を経由し、外気取入ダンパ３８、送風機４０、二股ダクト４２及び開状態の供給ダンパ１８ａを順に通過して蓄熱式排ガス浄化装置４の蓄熱室１塔１２に供給される。 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.
　排出エアは蓄熱室１塔１２で加熱された後に燃焼室１６に流入して可燃性有害成分を燃焼除去され浄化される。燃焼室１６にはバーナ１０ａが設けられているので、可燃性有害成分を十分に燃焼除去できる温度に燃焼室１６の温度を維持することができる。浄化されたガスは、蓄熱室２塔１４において蓄熱した後に開状態の排気ダンパ２０ｂ及び二股ダクト４４を順次通過して排気ダクト４６から排出される。 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.
　ここで、蓄熱式排ガス浄化装置４では、蓄熱室１塔１２及び蓄熱室２塔１４において蓄熱される排熱を有効利用するために、一定時間排出ガスを処理した後に排出ガスの流れる方向を切換る必要がある。つまり、蓄熱室１塔１２→燃焼室１６→蓄熱室２塔１４の順で流れる排出ガスが、蓄熱室２塔１４→燃焼室１６→蓄熱室１塔１２の順で流れるように、供給ダンパ１８ａ、１８ｂ及び排出ダンパ２０ａ，２０ｂの開閉状態を切換る必要がある。 Here, in the heat storage type exhaust gas purification device 4, in order to effectively use the exhaust heat stored in the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, 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.
　排出ガスの流れる方向の切換は、処理時間ではなく、二股ダクト４２に設けられた温度センサ６０により測定された排気ガス入口温度Ｔ１と二股ダクト４４に設けられた温度センサ６２により測定された排気ガス出口温度Ｔ２との差に基づいて行うようにしてもよい。 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.
　供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂの切換は、以下の手順で行う。まず、外気取入ダンパ３８を開状態とし外気を取り込む。 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.
　次に、ホットバイパスダンパ２８及び遮断ダンパ３６を閉状態とし、吸着体６に対する脱着用エアの供給を中断する。続いて、供給ダンパ１８ａ及び排出ダンパ２０ｂを閉じるとともに、供給ダンパ１８ｂ及び排出ダンパ２０ａを開いて、ガスの流通方向を切換る。 Next, 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.
　切換完了後には、ホットバイパスダンパ２８及び遮断ダンパ３６を開状態として吸着体６に対する脱着用エアの供給を再開し、外気取入ダンパ３８を閉状態として外気の取り込みを停止する。これにより、排出エアは開状態の供給ダンパ１８ｂから蓄熱室２塔１４を経て燃焼室１６に流入して可燃性有害成分を燃焼除去され、可燃性有害成分を除去され浄化されたガスは、蓄熱室１塔１２、開状態の排出ダンパ２０及び二股ダクト４４を順次通過して排気ダクト４６から排出されるようになる。 After the switching is completed, 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. As a result, 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.
　供給ダンパ１８ａ及び排出ダンパ２０ｂが閉状態、供給ダンパ１８ｂ及び排出ダンパ２０ａが開状態から、供給ダンパ１８ａ及び排出ダンパ２０ｂが開状態、供給ダンパ１８ｂ及び排出ダンパ２０ａが閉状態に切換る場合も同様の手順となる。 The same applies when the supply damper 18a and the discharge damper 20b are closed, the supply damper 18b and the discharge damper 20a are opened, the supply damper 18a and the discharge damper 20b are opened, and the supply damper 18b and the discharge damper 20a are switched to the closed state. It becomes the procedure of.
　このように供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂを連動させて開閉し、切換が行われる際に、供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂが同時に開状態となるときには、遮断ダンパ３６を閉状態として吸着体６に対する脱着用エアの供給を中断するとともに、外気取入ダンパ３８を開状態として可燃性有害成分を含まない外気を取り込み、導入した外気を開状態の供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂそれぞれに対して通過させることができるので、可燃性有害成分を含有する排出エアがその可燃性有害成分を燃焼除去されずに大気中に排出されることを防止することができる。また、簡単な構造及び少ない操作で迅速に供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂの切換を行うことができる。 Thus, when 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. In 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. And 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. Further, 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.
　なお、ホットバイパスダンパ２８を閉状態にせずに、供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂを連動させて開閉し、切換を行うこともできる。 Note that the 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.
　排出エアにおける可燃性有害成分の濃度を濃度計５４により測定し、測定された濃度があらかじめ設定された濃度以上となった場合には、外気取入ダンパ３８の開度を調節して、外気を排出エアに供給して可燃性有害成分を希釈することができる。これにより、蓄熱式排ガス浄化装置４において、排出エアの可燃性有害成分の濃度が高すぎて爆発などが発生することを防止することができる。 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.
　上述した本発明の実施形態による排ガス浄化設備１及びこの排ガス浄化設備１の運転制御方法によれば、複数組のダンパ、即ち、供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂの開閉の切換が行われる際に、切換対象であるダンパが同時に開状態になってしまうときには、外気取入ダンパ３８を開状態として外気を取り込み、遮断ダンパ３６を閉状態として吸着体に対する高温の脱着用エアの供給を中断するとともに、導入した外気を開状態のダンパのそれぞれに対して通過させることができるので、可燃性有害成分を含有する排出エアがその可燃性有害成分を燃焼除去されずに大気中に排出されることを防止することができる。 According to the exhaust gas purification facility 1 and the operation control method of the exhaust gas purification facility 1 according to the embodiment of the present invention described above, 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. When 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. In addition to being interrupted, 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.
　次に、図３を参照して、本発明の実施形態の変形例による排ガス浄化設備及びその運転制御方法を説明する。 Next, with reference to FIG. 3, an exhaust gas purification facility and an operation control method thereof according to a modification of the embodiment of the present invention will be described.
　上述した実施形態による排ガス浄化設備は、蓄熱式排ガス浄化装置が４個以上の偶数個の蓄熱室を備えている場合でも適用可能である。ここで、偶数個の蓄熱室を備えた蓄熱式排ガス浄化装置は、パージを行うための蓄熱室を備えていない構造となっている。
　図３に示すように、この変形例による蓄熱式排ガス浄化装置は、４つの蓄熱室１塔７０、蓄熱室２塔７２、蓄熱室３塔７４及び蓄熱室４塔７６を備えている。この蓄熱式排ガス浄化装置では、以下のようにダンパの切換を行う。なお、蓄熱室３塔７４及び蓄熱室４塔７６は、蓄熱室１塔７０及び蓄熱室２塔７２と同様な構造であり、供給ダンパ１８ｃ、排出ダンパ２０ｃ及び温度センサ７８と、供給ダンパ１８ｄ、排出ダンパ２０ｄ及び温度センサ８０と、をそれぞれが備えている。 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. Here, 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.
As shown in FIG. 3, 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. In this heat storage type exhaust gas purification apparatus, 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.
　ここでは、開状態のダンパのみを示し、残りのダンパは閉状態とする。
（Ａ）開状態：供給ダンパ１８ａ，１８ｂ、排出ダンパ２０ｃ，２０ｄ
　　　ガスの流れ：蓄熱室１塔７０、蓄熱室２塔７２→燃焼室１６→蓄熱室３塔７４、蓄熱室４塔７６
（Ｂ）開状態：供給ダンパ１８ｂ，１８ｃ、排出ダンパ２０ａ，２０ｄ
　　　ガスの流れ：蓄熱室２塔７２、蓄熱室３塔７４→燃焼室１６→蓄熱室１塔７０、蓄熱室４塔７６
（Ｃ）開状態：供給ダンパ１８ｃ，１８２３ｄ、排出ダンパ２０ａ，２０ｂ
　　　ガスの流れ：蓄熱室３塔７４、蓄熱室４塔７６→燃焼室１６→蓄熱室１塔７０、蓄熱室２塔７２
（Ｄ）開状態：供給ダンパ１８ａ，１８ｄ、排出ダンパ２０ｂ，２０ｃ
　　　ガスの流れ：蓄熱室１塔７０、蓄熱室４塔７６→燃焼室１６→蓄熱室２塔７６、蓄熱室３塔７４ Here, only the open damper is shown, and the remaining dampers are closed.
(A) Open state: supply dampers 18a and 18b, discharge dampers 20c and 20d
Gas flow: heat storage chamber 1 tower 70, heat storage chamber 2 tower 72 → combustion chamber 16 → heat storage chamber 3 tower 74, heat storage chamber 4 tower 76
(B) Open state: supply dampers 18b and 18c, discharge dampers 20a and 20d
Gas flow: 2 heat storage chambers 72, 3 heat storage chambers 74 → combustion chamber 16 → 1 heat storage chamber 70, 4 heat storage chambers 76
(C) Open state: supply dampers 18c and 1823d, discharge dampers 20a and 20b
Gas flow: heat storage chamber 3 tower 74, heat storage chamber 4 tower 76 → combustion chamber 16 → heat storage chamber 1 tower 70, heat storage chamber 2 tower 72
(D) Open state: supply dampers 18a and 18d, discharge dampers 20b and 20c
Gas flow: 1 heat storage chamber 70, 4 heat storage chambers 76 → combustion chamber 16 → 2 heat storage chambers 76, 3 heat storage chambers 74
　このように、偶数個の蓄熱室を備えた蓄熱式排ガス浄化装置において、パージを行うための蓄熱室を設けなくても、可燃性有害成分を含有する排出エアがその可燃性有害成分を燃焼除去されずに大気中に排出されることを防止することができる。これにより、排ガス浄化設備をより小型化することができる。また、燃焼室を小さくすることができるので、温度維持のための燃料を削減することができる。 In this way, in a regenerative exhaust gas purification apparatus having an even number of heat storage chambers, 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.
　次に、図４により、本発明の他の実施形態による排ガス浄化設備を説明する。この他の実施形態による排ガス浄化設備の基本構造は、図１に示した本発明の実施形態による排ガス浄化設備と同じであるので、同一部分には同一符号を付し、説明は省略する。以下、主に異なる部分を説明する。 Next, an exhaust gas purification facility according to another embodiment of the present invention will be described with reference to FIG. Since the basic structure of the exhaust gas purification equipment according to the other embodiment is the same as that of the exhaust gas purification equipment according to the embodiment of the present invention shown in FIG. 1, the same parts are denoted by the same reference numerals and description thereof is omitted. Hereinafter, mainly different parts will be described.
　本発明の他の実施形態による排ガス浄化設備８０は、連続式再生式濃縮装置を有さず、蓄熱式排ガス浄化装置４を備えている。このため、排ガス浄化設備８０は、各種の生産設備や処理設備等の上流側設備（図示せす）から排出された可燃性有害成分を含む排ガスが、直接、排出ダクト３４に排出され、この排出ダクト３４を経て、蓄熱式排ガス浄化装置４へ供給されるようになっている。 The exhaust gas purification facility 80 according to another embodiment of the present invention 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.
　排出ダクト３４の遮断ダンパ３６の上流側には、排ガスを一時的に貯留する貯留タンク８２が設けられ、この貯留タンク８２には開閉弁８４が取り付けられている。この開閉弁８４は、通常は、閉状態に保持されている。 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.
　排ガス浄化設備８０も、図１の実施形態による設備と同様に、供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂが同時に開状態になるときには、外気取入ダンパ３８を開状態とし、外気を排出ダクト３４内に取り込み、遮断ダンパ３６を閉状態として上流側設備からの排ガスが蓄熱式排ガス浄化装置４へ供給されないようにしている。これにより、取り込まれた外気が開状態の供給ダンパ１８ａ，１８ｂ及び排出ダンパ２０ａ，２０ｂを通過するようになっている。 In 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.
　このとき、貯留タンク８２を開状態とすることにより、上流側設備からの排ガスを一時的に貯留タンク８２に貯留するようにしている。この結果、本実施形態による排ガス浄化設備８０においては、ダンパの全てが開状態のときであっても、上流側設備の運転を休止する等の必要がない。 At this time, the storage tank 82 is opened to temporarily store the exhaust gas from the upstream facility in the storage tank 82. As a result, in the exhaust gas purification facility 80 according to the present embodiment, it is not necessary to stop the operation of the upstream facility even when all of the dampers are open.
　本実施形態による排ガス浄化装置８０によれば、連続式再生式濃縮装置を設けない場合であっても、上流側設備から排出される可燃性有害成分を含む排ガスを貯留タンク８２により一時的に貯留することができるので、ダンパが同時に開状態となるときに、可燃性有害成分を含有する排ガスがその可燃性有害成分を燃焼除去されずに大気中に排出されることのない。 According to the exhaust gas purifying device 80 according to the present embodiment, 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.
１　排ガス浄化設備
２　連続再生式濃縮装置（吸着除去装置）
４　蓄熱式排ガス浄化装置
６　吸着体
１２　蓄熱室１塔
１４　蓄熱室２塔
１６　燃焼室
２８ａ，２８ｂ，２８ｃ，２８ｄ　供給ダンパ
３０ａ，３０ｂ，３０ｃ，３０ｄ　排出ダンパ
３２　制御装置
３４　排出ダクト
３６　遮断ダンパ
３８　外気取入ダンパ
４０　送風機
４２，４４　二股ダクト
４６　排気ダクト
５４　濃度計 1 Exhaust gas purification equipment 2 Continuous regeneration type concentrator (adsorption removal device)
4 Heat storage type exhaust gas purification device 6 Adsorber 12 Heat storage chamber 1 tower 14 Heat storage chamber 2 tower 16 Combustion chambers 28a, 28b, 28c, 28d Supply dampers 30a, 30b, 30c, 30d Discharge damper 32 Control device 34 Discharge duct 36 Cut off damper 38 Outside air intake damper 40 Blower 42, 44 Forked duct 46 Exhaust duct 54 Concentration meter

Claims (6)

  1. 　排ガスに含まれる可燃性有害成分を吸脱着可能な吸着体を備えた吸着除去装置であって、可燃性有害成分を含む排ガスを吸着体に供給してこの吸着体により可燃性有害成分を吸着して排ガスから除去すると共に、前記吸着体に高温の脱着用エアを供給して前記吸着体に吸着された可燃性有害成分を脱着する前記吸着除去装置と、
    　この吸着除去装置から排出される可燃性有害成分を含む排出エアを燃焼して前記可燃性有害成分を浄化する蓄熱式排ガス浄化装置であって、この蓄熱式排ガス浄化装置が、偶数個の蓄熱室及びこれらの偶数個の蓄熱室と接続された燃焼室を備え、偶数個の蓄熱室にそれぞれ一対ずつ設けられた複数組のダンパを連動させて開閉して、偶数個の蓄熱室のいずれかから供給された前記排出エアを燃焼室において燃焼させてこの排出エアに含まれる可燃性有害成分を浄化する前記蓄熱式排ガス浄化装置と、
    　前記吸着除去装置から排出される排出エアを前記蓄熱式排ガス浄化装置に供給し、前記蓄熱式排ガス浄化装置の各蓄熱室に接続される配管であって、この配管の上流から順に、排出エアの供給を遮断する遮断ダンパ、外気を配管内に取り込む外気取入ダンパ、及び、排出エアを供給するための送風機が、配設されている前記配管と、
    　前記複数組のダンパが同時に開状態になるとき、前記外気取入ダンパを開状態として外気を配管内に取り込み、前記遮断ダンパを閉状態として前記吸着除去装置の吸着体への脱着用エアの供給を中断するように、前記外気取入ダンバ及び前記遮断ダンパを操作して、取り込まれた外気を前記開状態のダンパのそれぞれに対して通過させるようにした制御装置と、を有する排ガス浄化設備。     An adsorption / removal device equipped with an adsorbent capable of adsorbing and desorbing flammable harmful components contained in exhaust gas, supplying exhaust gas containing flammable harmful components to the adsorbent, and adsorbing the flammable harmful components by this adsorbent And removing the flammable harmful components adsorbed on the adsorbent by supplying high-temperature desorption air to the adsorbent,
    A regenerative exhaust gas purification device that purifies the combustible harmful components by burning exhaust air containing combustible harmful components discharged from the adsorption removal device, wherein the regenerative exhaust gas purification device has an even number of heat storage chambers. And a combustion chamber connected to these even number of heat storage chambers, opening and closing a plurality of pairs of dampers provided in pairs in each of the even number of heat storage chambers, and from any of the even number of heat storage chambers The regenerative exhaust gas purification device for purifying the combustible harmful components contained in the exhaust air by combusting the supplied exhaust air in a combustion chamber;
    Exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and is connected to each heat storage chamber of the regenerative exhaust gas purification device. A shut-off damper that shuts off the supply, an outside air intake damper that takes outside air into the pipe, and a blower for supplying exhaust air;
    When the plurality of sets of dampers are simultaneously opened, the outside air intake damper is opened, the outside air is taken into the pipe, the shutoff damper is closed, and the desorption air is supplied to the adsorption body of the adsorption removal device. And a control device that operates the outside air intake damper and the shut-off damper so that the taken-in outside air passes through each of the open dampers.
  2. 　前記吸着除去装置から排出される排出エアに含まれる可燃性有害成分の濃度が、前記吸着除去装置に供給される前記排ガスに含まれる可燃性有害成分の濃度よりも高濃度である請求項１に記載の排ガス浄化設備。 The concentration of the flammable harmful component contained in the exhausted air discharged from the adsorption removal device is higher than the concentration of the flammable harmful component contained in the exhaust gas supplied to the adsorption removal device. The exhaust gas purification equipment described.
  3. 　更に、前記排出エア中の可燃性有害成分の濃度を測定する濃度計を有し、前記制御装置は、この濃度計により測定された前記排出エア中の可燃性有害成分の濃度が、あらかじめ設定された濃度以上のときには、前記外気取入ダンパを操作して、前記外気取入ダンパから外気を取り入れて可燃性有害成分を希釈する請求項１又は２に記載の排ガス浄化設備。 Furthermore, it has a concentration meter for measuring the concentration of flammable harmful components in the exhaust air, and the control device is preset with the concentration of the flammable harmful components in the exhaust air measured by the concentration meter. The exhaust gas purification equipment according to claim 1 or 2, wherein when the concentration is equal to or higher than the concentration, the outside air intake damper is operated to take in outside air from the outside air intake damper to dilute combustible harmful components.
  4. 　排ガスに含まれる可燃性有害成分を吸脱着可能な吸着体を備えた吸着除去装置と、
    　この吸着除去装置から排出される可燃性有害成分を含む排出エアを燃焼して前記可燃性有害成分を浄化する蓄熱式排ガス浄化装置であって、偶数個の蓄熱室と、これらの偶数個の蓄熱室と接続された燃焼室と、偶数個の蓄熱室にそれぞれ一対ずつ設けられた複数組のダンパとを備えた前記蓄熱式排ガス浄化装置と、
    　前記吸着除去装置から排出される排出エアを前記蓄熱式排ガス浄化装置に供給し、前記蓄熱式排ガス浄化装置の各蓄熱室に接続される配管であって、この配管の上流から順に、排出エアの供給を遮断する遮断ダンパ、外気を配管内に取り込む外気取入ダンパ、及び、排出エアを供給するための送風機が、配設されている前記配管と、を有する排ガス浄化設備の運転制御方法であって、
    　可燃性有害成分を含む排ガスを前記吸着除去装置の吸着体に供給してこの吸着体により可燃性有害成分を吸着して排ガスから除去すると共に、前記吸着体に高温の脱着用エアを供給して前記吸着体に吸着された可燃性有害成分を脱着する工程と、
    　前記吸着除去装置から排出される排出エアを前記配管により前記蓄熱式排ガス処理装置に供給する工程と、
    　前記蓄熱式排ガス処理装置の複数組のダンパを連動させて開閉して、偶数個の蓄熱室のいずれかから供給された前記排出エアを燃焼室において燃焼させてこの排出エアに含まれる可燃性有害成分を浄化する工程と、
    　前記複数組のダンパが同時に開状態になるとき、前記外気取入ダンパを開状態として外気を配管内に取り込み、前記遮断ダンパを閉状態として前記吸着除去装置の吸着体への脱着用エアの供給を中断して、取り込まれた外気を前記開状態のダンパのそれぞれに対して通過させる工程と、
    　を有する排ガス浄化設備の運転制御方法。     An adsorption / removal device equipped with an adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas;
    A regenerative exhaust gas purification device that purifies the combustible harmful components by combusting exhaust air containing combustible harmful components discharged from the adsorption removal device, wherein the even number of heat storage chambers and these even number of heat storages The regenerative exhaust gas purification apparatus comprising a combustion chamber connected to the chamber, and a plurality of sets of dampers provided in pairs in each of the even number of heat storage chambers;
    Exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and is connected to each heat storage chamber of the regenerative exhaust gas purification device. An exhaust gas purification equipment operation control method comprising: a shut-off damper that shuts off supply, an external air intake damper that takes outside air into a pipe, and a pipe that is provided with a blower for supplying exhaust air. And
    Exhaust gas containing flammable harmful components is supplied to the adsorbent of the adsorption / removal device, and the adsorbent adsorbs and removes flammable harmful components from the exhaust gas, and supplies hot desorption air to the adsorbent. Desorbing combustible harmful components adsorbed on the adsorbent, and
    Supplying exhaust air discharged from the adsorption removal device to the heat storage exhaust gas treatment device through the pipe;
    Combustible harmful substances contained in the exhaust air by opening and closing a plurality of sets of dampers of the heat storage type exhaust gas treatment device and combusting the exhaust air supplied from any of the even number of heat storage chambers in the combustion chamber Purifying the ingredients;
    When the plurality of sets of dampers are simultaneously opened, the outside air intake damper is opened, the outside air is taken into the pipe, the shutoff damper is closed, and the desorption air is supplied to the adsorption body of the adsorption removal device. And passing the taken outside air through each of the open dampers, and
    Control method of exhaust gas purification equipment having
  5. 　前記吸着除去装置から排出される排出エアに含まれる可燃性有害成分の濃度が、前記吸着除去装置に供給される前記排ガスに含まれる可燃性有害成分の濃度よりも高濃度である請求項４に記載の排ガス浄化設備の運転制御方法。 The concentration of the combustible harmful component contained in the exhausted air discharged from the adsorption removal device is higher than the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. The operation control method of the described exhaust gas purification equipment.
  6. 　前記排ガス浄化設備は、前記排出エア中の可燃性有害成分の濃度を測定する濃度計を有し、更に、この濃度計により測定された前記排出エア中の可燃性有害成分の濃度が、あらかじめ設定された濃度以上のときには、前記外気取入ダンパから外気を取り入れて可燃性有害成分を希釈する工程を有する請求項４又は５に記載の排ガス浄化設備の運転制御方法。 The exhaust gas purification equipment has a concentration meter that measures the concentration of flammable harmful components in the exhaust air, and the concentration of the flammable harmful components in the exhaust air measured by the concentration meter is preset. The exhaust gas purification equipment operation control method according to claim 4 or 5, further comprising a step of diluting a flammable harmful component by taking in outside air from the outside air intake damper when the concentration is higher than a given concentration.
PCT/JP2013/073054 2012-08-29 2013-08-28 Exhaust gas-purifying equipment and operation control method therefor WO2014034742A1 (en)

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