WO2024082419A1 - Purificateur d'air - Google Patents

Purificateur d'air Download PDF

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Publication number
WO2024082419A1
WO2024082419A1 PCT/CN2022/139859 CN2022139859W WO2024082419A1 WO 2024082419 A1 WO2024082419 A1 WO 2024082419A1 CN 2022139859 W CN2022139859 W CN 2022139859W WO 2024082419 A1 WO2024082419 A1 WO 2024082419A1
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WO
WIPO (PCT)
Prior art keywords
liquid
film carrier
liquid film
air
purification
Prior art date
Application number
PCT/CN2022/139859
Other languages
English (en)
Chinese (zh)
Inventor
路建霞
Original Assignee
路建霞
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 路建霞 filed Critical 路建霞
Publication of WO2024082419A1 publication Critical patent/WO2024082419A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • 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
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present application relates to the field of air purification, and in particular to an air purifier.
  • Existing air purification technologies mainly include passive adsorption filtration purification technology and active air purification technology.
  • the principle of passive air purifiers is: using a fan to suck air into the purifier, and filtering the air through the built-in filter of the purifier, which can filter dust, odor, toxic gases and kill some bacteria.
  • the filter is mainly divided into a particle filter and an organic filter, and the particle filter is further divided into a coarse particle filter, a fine particle filter, etc.;
  • the difference between the principle of active air purifiers and the principle of passive air purification is that active air purifiers get rid of the restrictions on fans and filters, and actively release purification and sterilization factors into the air.
  • the technologies for purification and sterilization factors on the market mainly include silver ion technology, negative ion technology, low-temperature plasma technology, photocatalyst technology, and net ion group ion technology.
  • the pore size of the filter cannot be too small, otherwise the resistance will be very large and the flux will be greatly affected. There is almost no removal effect on fine particles, especially those with a size below the micron level. The finer the particles, the easier they are to reach deep into the lungs and cause harm to the human body. Therefore, the purification effect is poor.
  • the filter should be replaced frequently, otherwise the resistance of the fan will increase with the accumulation of particulate matter, greatly affecting the filtration efficiency. It is not only expensive, but also easy to cause secondary pollution because the fabric is generally chemical fiber.
  • the adsorption efficiency is low. Since the thickness of the adsorption layer is generally in the centimeter level, while the wind speed is in the meter level, the time for wind to pass through the adsorption layer is only in the millisecond level, and there is not enough time for diffusion. Therefore, the efficiency of one-time filtration and adsorption is very low. The adsorption rate can only be increased by circulating large air volume, which requires increasing the air volume.
  • Water foam/falling film purification technology is commonly used in the petrochemical field as an industrial tail gas treatment technology. It is suitable for washing and purification before high-concentration tail gas emissions.
  • the absorption liquid is dispersed on the membrane medium by spraying, such as ceramic, stainless steel, plastic ring, saddle, and tubular media.
  • the present application proposes an air purifier, which dissolves or disperses pollutants in an absorbing liquid by free diffusion and exchange with the absorbing liquid substance to improve the purification effect.
  • An air purifier comprises a box body, a laminar flow purification component, an air inlet driver and a controller, wherein opposite side walls of the box body are respectively provided with an air inlet and an air outlet, the air inlet driver is installed at the air inlet, the laminar flow purification component is installed in the box body, the controller is installed on the front side of the box body and is used to control the laminar flow purification component and the air inlet driver, the laminar flow purification component comprises a partition, a circulation pump and a liquid film carrier plate, the partition is horizontally fixed in the box body and divides the box body into an upper liquid storage chamber and a lower mounting chamber, the liquid film carrier plates are vertically spaced in the lower mounting chamber, a purification channel is formed between any two adjacent liquid film carrier plates, the surface of the liquid film carrier plates is coated with absorbent liquid, a groove is provided on the side of the lower mounting chamber close to the air outlet, a circulation pump is installed in the groove, the liquid outlet end of the circulation pump is connected with the
  • the width of the purification channel is between 2 mm and 20 mm.
  • the liquid film carrier is a thin sheet structure made of hydrophilic material.
  • the liquid-to-gas weight ratio in the box is between 0.1 and 2.
  • the liquid film carrier plate comprises a front liquid film carrier plate and a rear liquid film carrier plate, and an extension line of the front liquid film carrier plate is obliquely intersected with an extension line of the rear liquid film carrier plate.
  • the rear liquid film carrier plates are multiple groups arranged front to back, and the purification channels formed by the multiple groups of rear liquid film carrier plates are staggered front to back.
  • the solute of the absorption liquid is a liquid medium that is easily soluble in water, difficult to volatilize and has air purification effect.
  • the absorption liquid is an air purification absorption liquid
  • the air purification absorption liquid comprises water and a chemical solute
  • the chemical solute is selected from at least one of alcohols, ammonium salts, hydroxylamines, compounds containing primary/secondary amine functional groups and their salts.
  • the pollutants purified by the air purifier include VOCs, dust, smoke and aerosols.
  • the air purifier of the present invention adopts a hydrophilic liquid film carrier plate with a large specific surface area, which can construct a material and energy exchange area as large as possible in a smaller volume space, achieve efficient removal of pollutants, and have a higher efficiency ratio.
  • the air purifier of the present invention is suitable for air purification with low pollution concentration in closed or semi-closed spaces, such as indoors, in cars, in warehouses, in tunnels, on streets and other places. It can effectively absorb pollutants including dust, smoke and gas, and the smaller the particles, the better the effect. Specifically, by exchanging substances through free diffusion rather than filtering, a larger gas channel can be established to achieve a large flow rate and low resistance, so the air circulates faster, the noise is lower, and it will never be blocked.
  • the air purifier of the present invention uses a substance that is easily soluble in water and difficult to volatilize, which can effectively control the evaporation of the absorption liquid, thereby controlling the air humidity, and can maintain a comfortable humidity by replenishing water when humidification is required. It is particularly suitable for dry areas or winter.
  • the absorption liquid in the present invention contains a substance that reacts with formaldehyde condensation, which can effectively fix formaldehyde without causing secondary pollution.
  • the chemical solute is a biodegradable substance, which can be directly biodegraded through a septic tank or purified and recycled by a professional organization without generating difficult-to-degrade waste, thus truly realizing a green cycle.
  • FIG1 is a perspective schematic diagram of an air purifier according to an embodiment of the present application.
  • FIG2 is a schematic diagram of the internal structure of FIG1 (front view);
  • FIG3 is a schematic diagram of the internal structure of FIG1 (top view);
  • the housing 10 The housing 10 , the air inlet 101 , the air outlet 102 , the groove 103 , the air inlet driver 11 , the controller 12 , the partition 21 , the penetration hole 211 , the circulation pump 22 , and the liquid film carrier plate 23 .
  • this embodiment discloses an air purifier, including a housing 10 , a laminar flow purification component, an air inlet driver 11 and a controller 12 .
  • the opposite side walls of the box body 10 are respectively provided with an air inlet 101 and an air outlet 102.
  • the box body 10 is preferably a rectangular structure.
  • the air inlet 101 and the air outlet 102 are respectively provided at the center of the left and right sides of the box body 10.
  • An air inlet drive 11 is installed at the air inlet 101.
  • the air inlet drive 11 is preferably a fan, which is used to introduce external air into the box body 10 for filtering.
  • the laminar flow purification component is installed in the box 10, and the controller 12 is installed on the front of the box 10 to control the laminar flow purification component and the air inlet driver 11.
  • the front of the box 10 is also provided with a display screen electrically connected to the controller, and the display screen is used to display filtering parameters.
  • the laminar flow purification component includes a partition 21, a circulation pump 22 and a liquid film carrier 23.
  • the partition 21 is horizontally fixed in the box body 10 and divides the box body 10 into an upper liquid storage chamber and a lower installation chamber.
  • the liquid film carrier 23 is vertically spaced in the lower installation chamber, and a purification channel is formed between any two adjacent liquid film carriers 23.
  • the surface of the liquid film carrier 23 is coated with absorption liquid.
  • a groove 103 is provided on one side of the lower installation chamber close to the air outlet 102.
  • the circulation pump 22 is installed in the groove 103.
  • the liquid outlet end of the circulation pump 22 is connected to the upper liquid storage chamber through an infusion pipeline.
  • the partition 21 is evenly provided with penetration holes 211 for penetrating the absorption liquid into the liquid film carrier.
  • the liquid film carrier 23 is coated with an absorption liquid, and the external air is input into the purification channel through the air inlet driver 11.
  • the molecular thermal motion of the gas and the Brownian motion of the pollutant particles are utilized to fully exchange substances with the liquid film carrier 23, so that the pollutants are dissolved or dispersed in the absorption liquid, thereby eliminating particulate matter and harmful gases in the air, and then the active or toxic pollutants, such as formaldehyde, react with the active ingredients in the liquid to generate non-volatile and low-toxic substances, thereby avoiding the pollution caused by the re-volatilization of harmful gases.
  • the absorption liquid on the liquid film carrier 23 flows slowly downward under the action of gravity, and then gathers in the groove 103, and is input into the upper liquid storage cavity again through the circulation pump 22, and is coated on the liquid film carrier 23 again through the penetration hole 211, so as to achieve the purpose of reuse.
  • the absorption liquid on the liquid film carrier 23 can be replaced after being used for a period of time.
  • the absorption liquid can be coated on the liquid film carrier 23 by gravity, infiltration/capillary action, centrifugal force alone or in combination, and the coated absorption liquid must fully cover the liquid film carrier 23.
  • the material of the liquid film carrier 23 is a single metal (such as iron) or an alloy (such as aluminum alloy), or it can be a material containing natural fibers such as bamboo, wood, plant leaves, and biomass of animal fur. It can also be an inorganic material, such as glass, cement, gypsum, quartz, limestone, granite, and synthetic fiber board.
  • the material selection of the liquid film carrier 23 is relatively wide.
  • the shape of the liquid film carrier 23 can be sheet, tube, column, preferably a thin sheet structure of hydrophilic material, and the thickness of the liquid film carrier 23 is not more than 10 mm, so that more liquid film carriers 23 can be arranged in a limited space, which helps to increase the coating amount of the absorption liquid.
  • the solute of the absorption liquid is a liquid medium that is easily soluble in water, difficult to volatilize, and has air purification effect, such as monohydric or polyhydric alcohol, ammonia, hydroxylamine, or organic substances with less than 15 carbon atoms in the molecular structure and containing primary amine and secondary amine functional groups and their salts.
  • the gap of the purification channel should be as small as possible, preferably not more than 50 mm.
  • the width of the purification channel is between 2 mm and 20 mm, which has a high cost performance.
  • the circulation amount of the absorption liquid is determined according to the concentration of air pollutants.
  • the liquid-to-gas weight ratio in the box 10 is between 0.1 and 2, wherein the greater the concentration of air pollutants, the greater the liquid-to-gas weight ratio, and the smaller the concentration of air pollutants, the smaller the liquid-to-gas weight ratio.
  • an absorption liquid cooling or heating device can be installed. Since the liquid film carrier plate 23 has a large heat exchange area and high heat exchange efficiency, it does not require a high temperature difference when directly exchanging heat with the air like an ordinary air conditioner. Therefore, the operating temperature of the cooling and heating device can be close to the target air temperature, thereby reducing the load of the air conditioning device and achieving the purpose of energy saving. Moreover, since the temperature difference with the target temperature is small, especially in summer, the temperature of the blown wind is close to the ambient temperature, and the human body feels more comfortable.
  • the liquid film carrier 23 includes a front liquid film carrier and a rear liquid film carrier, and the extension line of the front liquid film carrier is obliquely intersected with the extension line of the rear liquid film carrier.
  • the front liquid film carrier and the wind direction initially output by the air inlet driver 11 are at an acute angle, and the angle is preferably between 5°-10°, so as to facilitate uniform coating of the absorption liquid and ensure uniform clearance of the purification channel to ensure absorption effect.
  • the rear liquid film carrier is a plurality of groups arranged front and back, and the purification channels formed by the plurality of groups of rear liquid film carriers are staggered front and back. By staggering the purification channels front and back, the gas flow direction can be changed, so that the liquid film material exchange is more sufficient, which is conducive to the dissolution or dispersion of pollutants in the absorption liquid.
  • pollutants purified by the liquid film carrier 23 include VOCs, dust, smoke and aerosols.
  • the air purifier of this embodiment adopts a hydrophilic liquid film carrier plate 23 with a large specific surface area, which can construct the largest possible material and energy exchange area in a smaller volume space, achieve efficient removal of pollutants, and have a higher efficiency ratio.
  • the air purifier of this embodiment is suitable for air purification with low pollution concentration in closed or semi-closed spaces, such as indoors, in cars, in warehouses, in tunnels, on streets and other places. It can effectively absorb pollutants including dust, smoke and gas, and the smaller the particles, the better the effect. Specifically, by exchanging substances through free diffusion rather than filtering, a larger gas channel can be established to achieve a large flow rate and low resistance, so the air circulates faster, the noise is lower, and it will never be blocked.
  • the air purifier of this embodiment uses a substance that is easily soluble in water and difficult to volatilize, which can effectively control the evaporation of the absorption liquid, thereby controlling the air humidity, and can maintain a comfortable humidity by adding water when humidification is needed. It is particularly suitable for dry areas or winter.
  • the absorption liquid is an air purification absorption liquid
  • the air purification absorption liquid includes water and a chemical solute; the chemical solute is selected from at least one of alcohol, ammonium salt, hydroxylamine and compounds containing primary amine/secondary amine functional groups and their salts.
  • the pH value of the air purification absorption liquid is 2-5; the percentage of chemical solutes in the air purification absorption liquid is 10%-90%; the number of carbon atoms of the alcohol is not more than 15; the alcohol is 1,2-propylene glycol, 1,3-propylene glycol or glycerol; the number of carbon atoms of the compound containing primary/secondary amine functional groups and its salts is not more than 15; the compound containing primary/secondary amine functional groups and its salts are selected from at least one of ethylamine, propylamine, butylamine, diethylamine, dipropylamine and dibutylamine.
  • the absorption liquid in this embodiment contains a substance that reacts with formaldehyde condensation, which can effectively fix formaldehyde without causing secondary pollution.
  • the chemical solute is a biodegradable substance and can be directly biodegraded through a septic tank or purified and recycled by a professional organization without generating difficult-to-degrade waste, thus truly realizing a green cycle.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L'invention concerne un purificateur d'air, comprenant une boîte (10), un ensemble de purification à flux laminaire, un dispositif d'entraînement d'admission d'air (11), et un dispositif de commande (12). Des parois latérales opposées de la boîte (10) sont respectivement pourvues d'une entrée d'air (101) et d'une sortie d'air (102), le dispositif d'entraînement d'admission d'air (11) étant monté au niveau de l'entrée d'air (101) ; l'ensemble de purification à flux laminaire est monté dans la boîte (10), et l'ensemble de purification à flux laminaire comprend une plaque de séparation (21), une pompe de circulation (22) et des plaques de support de film liquide (23) ; la plaque de séparation (21) est fixée horizontalement dans la boîte (10) et divise l'intérieur de la boîte (10) en une cavité de stockage de liquide supérieure et une cavité de montage inférieure ; les plaques de support de film liquide (23) sont agencées verticalement dans la cavité de montage inférieure à des intervalles, un canal de purification étant formé entre deux plaques de support de film liquide adjacentes quelconques (23), et un liquide d'absorption étant revêtu sur les surfaces des plaques de support de film liquide (23) ; un évidement (103) est prévu sur le côté de la cavité de montage inférieure à proximité de la sortie d'air (102), la pompe de circulation (22) est montée dans l'évidement (103), une extrémité d'évacuation de liquide de la pompe de circulation (22) est en communication avec la cavité de stockage de liquide supérieure au moyen d'une conduite de transport de liquide, et des trous de perméation (211) sont répartis uniformément sur la plaque de séparation (21) pour la pénétration du liquide d'absorption dans les plaques de support de film liquide (23).
PCT/CN2022/139859 2022-10-17 2022-12-19 Purificateur d'air WO2024082419A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211267359.6 2022-10-17
CN202211267359.6A CN115957596A (zh) 2022-10-17 2022-10-17 一种空气净化器

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WO2024082419A1 true WO2024082419A1 (fr) 2024-04-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096191A (ja) * 1999-09-28 2001-04-10 Ricoh Elemex Corp 集塵脱臭装置
KR101076839B1 (ko) * 2011-05-31 2011-10-25 주식회사 젬백스앤카엘 전방에 강제순환수단이 설치된 워셔 필터를 이용한 순환공기 정화장치
CN103791565A (zh) * 2014-01-23 2014-05-14 苏州群英节能环保科技有限公司 多功能空气净化器
WO2015093172A1 (fr) * 2013-12-17 2015-06-25 臼井国際産業株式会社 Dispositif d'épuration de gaz d'échappement pour moteur diesel marin utilisant un carburant de basse qualité comme le pétrole contenant une concentration élevée de soufre
CN111520830A (zh) * 2020-04-17 2020-08-11 深圳浥清环保科技有限公司 滤芯、空气净化器及空气净化方法
CN217383242U (zh) * 2022-05-27 2022-09-06 美的集团股份有限公司 一种净化装置及空调

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096191A (ja) * 1999-09-28 2001-04-10 Ricoh Elemex Corp 集塵脱臭装置
KR101076839B1 (ko) * 2011-05-31 2011-10-25 주식회사 젬백스앤카엘 전방에 강제순환수단이 설치된 워셔 필터를 이용한 순환공기 정화장치
WO2015093172A1 (fr) * 2013-12-17 2015-06-25 臼井国際産業株式会社 Dispositif d'épuration de gaz d'échappement pour moteur diesel marin utilisant un carburant de basse qualité comme le pétrole contenant une concentration élevée de soufre
CN103791565A (zh) * 2014-01-23 2014-05-14 苏州群英节能环保科技有限公司 多功能空气净化器
CN111520830A (zh) * 2020-04-17 2020-08-11 深圳浥清环保科技有限公司 滤芯、空气净化器及空气净化方法
CN217383242U (zh) * 2022-05-27 2022-09-06 美的集团股份有限公司 一种净化装置及空调

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