WO2021117260A1 - Dispositif d'élimination/enrichissement de gaz - Google Patents

Dispositif d'élimination/enrichissement de gaz Download PDF

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Publication number
WO2021117260A1
WO2021117260A1 PCT/JP2020/006150 JP2020006150W WO2021117260A1 WO 2021117260 A1 WO2021117260 A1 WO 2021117260A1 JP 2020006150 W JP2020006150 W JP 2020006150W WO 2021117260 A1 WO2021117260 A1 WO 2021117260A1
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WO
WIPO (PCT)
Prior art keywords
gas
regeneration
zone
blower
purge
Prior art date
Application number
PCT/JP2020/006150
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English (en)
Japanese (ja)
Inventor
吉田和行
井上宏志
梅崎哲春
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株式会社西部技研
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Filing date
Publication date
Application filed by 株式会社西部技研 filed Critical 株式会社西部技研
Publication of WO2021117260A1 publication Critical patent/WO2021117260A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • 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
    • B01D53/14—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 absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/83—Solid phase processes with moving reactants
    • 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
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/0328—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with means for purifying supplied air

Definitions

  • adsorption / desorption is performed by a temperature difference using an adsorption honeycomb rotor carrying an adsorbent that can be regenerated at low temperature.
  • a regeneration heater or the like as a normal regeneration gas heating means, heating is performed only by raising the temperature with a regeneration blower for blowing the regeneration gas. It is about a gas removal concentrator that can save energy and achieve energy saving.
  • a breathable adsorption honeycomb rotor holding an amine-based absorbent is used as a device capable of separating and removing a gaseous substance to be removed from the air to be treated in a concentrated state at a low temperature.
  • an absorption type removal / concentration device that can secure the substance recovery rate of the device while suppressing the regeneration energy by separating the target substance by using the enthalpy difference between the treatment target air and the regeneration air. Further, by regenerating at a low temperature, the problems of oxidative deterioration and odor of the amine-based absorber are reduced.
  • Patent Document 2 discloses a low temperature regeneration desiccant dehumidifier.
  • the low-temperature regeneration desiccant dehumidifier uses a desiccant rotor carrying an adsorbent such as a polymer sorbent, and in the cooling mode, the desiccant rotor can be regenerated using the energy of the return air as the regeneration energy.
  • the hot water coil which is the source, is unnecessary for basic operation and has energy saving properties.
  • the hot water coil in the front stage of the regeneration inlet acts as a return air preheating part for heating the return air used for regeneration when the dehumidifying capacity of the cold / hot water coil in the front stage of the treatment inlet is insufficient in the cooling mode.
  • Patent Document 1 What is disclosed in Patent Document 1 is a cooling coil, a heating coil, a Berche element, an electric heater, a condenser (condenser) of a steam heater or a heat pump, and an evaporator (evaporator) as temperature adjusting means for heating the regenerated air. ), Etc., and although it is a low-temperature regeneration, it requires energy for heating.
  • Patent Document 2 basically does not require a hot water coil which is a regenerated air heating means in the cooling mode, but when the dehumidifying capacity of the cold / hot water coil in the stage before the treatment inlet is insufficient, or when the heating means during heating is insufficient. As a result, a hot water coil is required, and it is necessary to provide a heating means.
  • the main subject of the present invention is a gas removal concentrator using an adsorption honeycomb rotor carrying an adsorbent that can be regenerated at a low temperature, and a blower as a heating means for raising the temperature of the regenerating gas when the gas can be regenerated at a low temperature. It is an object of the present invention to provide a gas removal concentrator capable of reducing renewable energy and running cost without requiring a heating means such as a regeneration heater or a hot water coil by utilizing the temperature rise by the above.
  • "low temperature regeneration” means regeneration with a regeneration gas having a temperature of 50 ° C. or lower (hereinafter, all temperatures are referred to as "Celsius").
  • the present invention has an adsorption honeycomb rotor, and the adsorption honeycomb rotor is divided into at least a processing zone and a regeneration zone, and the processing target gas is ventilated through the processing zone to be treated.
  • the target substance contained in the gas is adsorbed on the honeycomb to be separated and removed from the gas to be treated, and in the regeneration zone, the regeneration gas is ventilated to desorb the target substance adsorbed by the honeycomb in the treatment zone with the regeneration gas.
  • the gas removal and concentrating device of the present invention is configured as described above, and by ventilating the treatment target gas through the treatment zone, the target substance contained in the treatment target gas is adsorbed on the honeycomb and separated and removed from the treatment target gas.
  • the target substance adsorbed by the honeycomb in the treatment zone is desorbed and concentrated in the regeneration air by ventilating the regeneration gas, and the supported adsorbent of the rotor portion is regenerated.
  • the honeycomb can be regenerated at a low temperature, it does not require a heating means such as a regeneration heater and is heated only by raising the temperature with a regenerating blower. Therefore, energy for heating is not required, and energy saving can be achieved. Running cost can be reduced.
  • the gas removal and concentrating device According to the present invention, even if an amine-based absorbent that easily causes performance deterioration due to temperature is used as an adsorbent that can be regenerated at low temperature, oxidative deterioration and odor of the absorbent can be suppressed. In addition, it can be easily operated even in an environment without utilities such as a heat pump and hot water. Furthermore, since a regeneration heater and a heat exchanger are not required, the entire device can be miniaturized, leading to a reduction in initial cost.
  • FIG. 1 is a flow chart of the first embodiment of the gas removing and concentrating device of the present invention.
  • FIG. 2 is a flow chart of the second embodiment of the gas removing and concentrating device of the present invention.
  • FIG. 3 is a flow chart in Example 3 of the gas removing and concentrating device of the present invention.
  • the present invention has an adsorption honeycomb rotor carrying an adsorbent that can be regenerated at a low temperature, and divides the adsorption honeycomb rotor into at least a treatment zone and a regeneration zone.
  • the structure is such that the gas to be treated is ventilated to the treatment zone, the target substance is separated and removed from the gas to be treated, and the regenerative gas whose temperature has been raised through the regeneration blower is ventilated to the regeneration zone to desorb the adsorbed target substance. It is set to.
  • Example 1 of the gas removing and concentrating device of the present invention will be described in detail with reference to FIG.
  • Reference numeral 1 denotes an adsorption honeycomb rotor, which is a non-combustible sheet such as ceramic fiber paper or glass fiber paper that is corrugated and wound into a rotor shape.
  • an amine-based solid absorbent is supported.
  • the adsorption honeycomb rotor 1 is divided into a processing zone 2, a regeneration zone 3, and a purge zone 4, and the adsorption honeycomb rotor 1 rotates in this order to continuously remove and concentrate the target substance from the gas to be processed.
  • the concentration of the target substance is reduced and the treatment blower. It is supplied or exhausted to the supply destination through 5.
  • the gas temperature rises by branching a part of the gas supplied to the treatment zone and ventilating the purge zone 4. Further, the gas that has passed through the purge zone 4 is passed through the regeneration blower 6, the heated regeneration gas is ventilated to the regeneration zone 3, and the target substance adsorbed on the honeycomb is desorbed on the regeneration gas, and the concentrated purpose is achieved. Gas containing substances is supplied or exhausted to the supply destination.
  • the regeneration blower 6 of the first embodiment according to the present invention is arranged on the regeneration inlet side.
  • the processing inlet / processing outlet has a negative pressure with respect to the regenerating inlet / regenerating outlet, and the gas on the processing side having a low target substance concentration from the processing side to the regenerating side Since the amount of leakage is reduced, the concentration performance is improved.
  • a purge zone 4 is provided after the regeneration zone 3 along the rotor rotation direction to reduce leakage between the processing side and the regeneration side.
  • wind noise may occur due to the drift. In building air conditioning, wind noise causes noise and can be a fatal problem.
  • the regeneration gas after passing through the regeneration blower 6 is ventilated to the adsorption honeycomb rotor 1 on the regeneration side, it is rectified and the wind noise is reduced by the sound absorbing effect of the adsorption honeycomb rotor 1. Therefore, it is possible to reduce noise and vibration when the gas removing and concentrating device according to the present invention is installed indoors, and the device can be installed in a machine room or the like.
  • the temperature rise by the blower differs depending on the type of blower. If it is a centrifugal blower such as a plug fan or a turbo fan, the temperature is about 3 ° C., but if it is a blower capable of generating a high static pressure (for example, a vortex blower such as a vortex blower), the temperature is raised by 10 ° C. or more. For example, if the outside air is 20 ° C., the temperature rises to about 30 ° C. after passing through the purge. After that, the temperature is further raised by 3 to 10 ° C. through a blower.
  • a centrifugal blower such as a plug fan or a turbo fan
  • the temperature is about 3 ° C.
  • a blower capable of generating a high static pressure for example, a vortex blower such as a vortex blower
  • the gas removal and concentrating device according to the present invention does not require these and can cover the regeneration inlet temperature only by raising the temperature with a blower, it can be particularly effective in the subtropical region where hot water cannot be expected.
  • the adsorbent is required to have the property of being able to desorb the target substance even at a low temperature of 50 ° C. or lower.
  • the target substance is carbon dioxide, for example, an amine-supported solid absorbent is used as the adsorbent, but by regenerating at a low temperature, there is an effect of reducing thermal deterioration and extending the life of the adsorbed honeycomb rotor. Furthermore, it is possible to suppress the generation of odors from the adsorption honeycomb rotor such as amine odors due to the decomposition of amines.
  • the present invention is not limited to the flow shown in FIG. 1, and a part of the processing outlet gas that has passed through the processing zone 2, the outside air, the return air from the room, and the like may be introduced into the purge zone 4. Further, a configuration may be configured in which either one or both of the processing side and the reproducing side are circulated.
  • a precooler, an aftercooler, a humidity adjusting means, etc. may be provided, or the processing blower 5 may be installed on the processing inlet side. Blowers other than the regenerative blower 6 may be arranged at an appropriate location and added to the blower as needed.
  • the purge zone may be eliminated and only the processing zone and the regeneration zone may be configured.
  • leakage from the regeneration side to the treatment side becomes a problem.
  • the target substance is carbon dioxide
  • the carbon dioxide concentration of the outside air is as low as about 450 ppm, so even if the outside air leaks to the treatment outlet side, the treatment is performed.
  • the carbon dioxide concentration at the outlet is only increased by several tens of ppm.
  • the difference from the first embodiment is that the pre-purge zone 7 is provided.
  • the pre-purge zone 7 is provided in front of the regeneration zone 3 and the purge zone 4 after it.
  • the gas flow in FIG. 2 is basically the same as that in FIG. 1, but the gas that has passed through the purge zone 4 and the gas that has passed through the pre-purge zone 7 are mixed and passed through the regeneration blower 6 to raise the temperature. , Ventilate the reproduction zone 3.
  • the present invention is not limited to the flow shown in FIG. 2, and the purge zone 4 may be configured to introduce a part of the processing outlet gas that has passed through the processing zone 2, the outside air, and the return air from the room. .. Similarly, not only the outside air but also the return air from the room, a part of the gas to be introduced into the treatment zone, a part of the treatment outlet gas that has passed through the treatment zone, and the like may be introduced into the pre-purge 7.
  • the gas may be configured to circulate between the purge zone 4 and the pre-purge zone 7. Further, a configuration may be configured in which either one or both of the processing side and the reproducing side are circulated.
  • a pre-cooler an after-cooler, a humidity adjusting means, etc. may be provided. Blowers other than the regenerative blower 6 may be arranged at an appropriate location and added to the blower as needed.
  • the difference from the second embodiment is that a part of the regeneration outlet gas is introduced into the pre-purge zone 7.
  • the concentration can be further increased by circulating a part of the regenerated outlet gas.
  • the regeneration outlet chamber of the chamber (not shown), which is a means of separating the zones, eliminates the zone partition between the pre-purge inlet and the regeneration outlet so that part of the regeneration outlet gas is returned directly to the pre-purge inlet in the chamber. When configured, it leads to cost reduction of the chamber.
  • the form is not limited to this, and a part of the gas that has passed through the regeneration outlet chamber may be introduced from outside the chamber through a duct to the pre-purge inlet.
  • the present invention is not limited to the flow shown in FIG. 3, and a part of the processing outlet gas that has passed through the processing zone 2, the outside air, the return air from the room, and the like may be introduced into the purge zone 4.
  • a pre-cooler an after-cooler, a humidity adjusting means, etc. may be provided. Blowers other than the regenerative blower 6 may be arranged at an appropriate location and added to the blower as needed. Further, the processing side may be circulated.
  • an air volume adjusting device such as a damper or a valve is provided in one or both of the pipes for sending gas from the outlet of the purge zone 4 and the outlet of the pre-purge zone 7 of FIGS.
  • the configuration may be such that the target substance removal performance on the treatment outlet side and the target substance concentration performance on the regeneration outlet side can be controlled so as to be controllable.
  • a control panel is integrally attached to a general dehumidifying device or a device such as the present invention.
  • a small fan or the like for cooling is provided in order to recover the heat for this temperature rise.
  • the control panel is provided with an air intake port, an air outlet is provided at a position opposite to the air intake port, and a pipe connecting the air intake port to the purge inlet and outlet is provided. May be good. Further, for example, the pipe may be passed near the motor of each blower to recover the heat emitted from each motor to the outside. If the air outlet is not provided with a purge zone, the air outlet may be configured to be provided with a pipe connected to the inlet of the regeneration zone.
  • a carbon dioxide removal and concentration experiment was performed using a gas removal and concentration device equipped with an adsorption honeycomb rotor having a diameter of ⁇ 200 mm and a thickness of 200 mm.
  • the carbon dioxide concentration supplied to the treatment inlet side and the purge inlet side was set to about 500 ppm, which is an atmospheric condition.
  • the equipment that constitutes the flow of FIG. 1 is used as the device (pattern 1), an air intake port is provided in the control panel in addition to those devices, and an air intake port is provided at a position opposite to the device to take out air.
  • an opening with a dust filter attached was provided at the bottom of the door of the control panel facing the outside of the device, and for the air outlet, the control panel facing the inside of the device. It was provided at the top of the mounting part.
  • the present invention is not limited to the above-mentioned position of the control panel, and the air intake port may be provided on the side surface of the lower part of the control panel, or the air intake port may be provided on the ceiling of the control panel. In short, it should be configured so that the maximum amount of heat generated can be recovered depending on the arrangement of equipment in the control panel and the flow of air. Further, when the device is installed outdoors, a louver, a louver, or the like may be attached in order to prevent rainwater from entering the control panel.
  • a gas removal concentrator using an adsorption honeycomb rotor carrying an adsorbent that can be regenerated at a low temperature instead of raising the temperature and regenerating by means of regenerating gas heating such as a normal regenerating heater, only a regenerating blower is used. Since it is heated by raising the temperature of the above, it is possible to reduce the heating energy required for desorption of the adsorbed target substance, which is energy saving and can reduce the running cost. In addition, since a regeneration heater and a heat exchanger are not required, the entire device can be miniaturized, which leads to a reduction in initial cost.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Gas Separation By Absorption (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Drying Of Gases (AREA)

Abstract

Le problème à résoudre par l'invention est de fournir un dispositif d'élimination/enrichissement de gaz ne requérant pas de moyen de chauffage pour régénérer un rotor en nid d'abeilles adsorbant, et étant écoénergétique. La solution selon l'invention concerne un dispositif d'élimination/enrichissement de gaz utilisant un rotor en nid d'abeilles adsorbant destiné à porter un adsorbant régénératif à basse température. L'augmentation de la température au moyen d'une soufflante est utilisée comme moyen de chauffage pour augmenter la température d'un gaz pour la régénération, et ainsi un moyen de chauffage, tel qu'un élément chauffant de régénération ou un serpentin d'eau chaude, n'est pas requis. Par conséquent, il est possible de réduire l'énergie de chauffage requise pour la régénération, d'économiser de l'énergie, et de réduire les coûts de fonctionnement.
PCT/JP2020/006150 2019-12-13 2020-02-18 Dispositif d'élimination/enrichissement de gaz WO2021117260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-224972 2019-12-13
JP2019224972A JP7455566B2 (ja) 2019-12-13 2019-12-13 ガス除去濃縮装置

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WO (1) WO2021117260A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1015339A (ja) * 1996-07-03 1998-01-20 Kobe Steel Ltd 脱臭装置
JP2011033317A (ja) * 2009-08-05 2011-02-17 Mitsubishi Electric Corp 除加湿装置及びそれを備えた空気調和機
JP2012102997A (ja) * 2011-12-19 2012-05-31 Mitsubishi Electric Corp 除加湿装置及びそれを備えた空気調和機
WO2015173848A1 (fr) * 2014-05-15 2015-11-19 三菱電機株式会社 Cycle de réfrigération à compression de vapeur
JP2017213842A (ja) * 2016-05-27 2017-12-07 エスアイアイ・プリンテック株式会社 液体噴射ヘッド及び液体噴射装置
JP2019062862A (ja) * 2017-10-05 2019-04-25 株式会社西部技研 二酸化炭素濃縮装置
JP2019171256A (ja) * 2018-03-28 2019-10-10 株式会社西部技研 ガス回収濃縮装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2681403B2 (ja) * 1989-12-19 1997-11-26 株式会社西部技研 ガス収着方法およびガス収着装置
TWM340426U (en) * 2008-01-15 2008-09-11 hui-bin Zhang Device for recycling dehumidifying wheel
JP5067507B2 (ja) * 2009-05-22 2012-11-07 ダイキン工業株式会社 流体処理装置および流体
JP6652806B2 (ja) 2015-10-13 2020-02-26 清水建設株式会社 空調システム
CN105771639B (zh) * 2016-05-10 2018-02-23 西部技研环保节能设备（常熟）有限公司 使用触媒转轮的低浓度voc污染空气净化装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1015339A (ja) * 1996-07-03 1998-01-20 Kobe Steel Ltd 脱臭装置
JP2011033317A (ja) * 2009-08-05 2011-02-17 Mitsubishi Electric Corp 除加湿装置及びそれを備えた空気調和機
JP2012102997A (ja) * 2011-12-19 2012-05-31 Mitsubishi Electric Corp 除加湿装置及びそれを備えた空気調和機
WO2015173848A1 (fr) * 2014-05-15 2015-11-19 三菱電機株式会社 Cycle de réfrigération à compression de vapeur
JP2017213842A (ja) * 2016-05-27 2017-12-07 エスアイアイ・プリンテック株式会社 液体噴射ヘッド及び液体噴射装置
JP2019062862A (ja) * 2017-10-05 2019-04-25 株式会社西部技研 二酸化炭素濃縮装置
JP2019171256A (ja) * 2018-03-28 2019-10-10 株式会社西部技研 ガス回収濃縮装置

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TW202122150A (zh) 2021-06-16
TWI813857B (zh) 2023-09-01
JP7455566B2 (ja) 2024-03-26

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