CN107511054B - Indoor air multi-pollutant purifying device - Google Patents

Indoor air multi-pollutant purifying device Download PDF

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CN107511054B
CN107511054B CN201711008649.8A CN201711008649A CN107511054B CN 107511054 B CN107511054 B CN 107511054B CN 201711008649 A CN201711008649 A CN 201711008649A CN 107511054 B CN107511054 B CN 107511054B
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bubbler
micro
gas
liquid
formaldehyde
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CN107511054A (en
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郭天祥
马楠
杜亚荣
王柏鑫
苏联
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North China Electric Power University
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North China Electric Power University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/72Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/70Organic acids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air

Abstract

A multi-pollutant indoor air purification device comprises a shell, a particulate matter filtering unit, a formaldehyde absorption unit, a secondary absorption unit and a control operation unit. The main body of the formaldehyde absorption unit is a micro bubbler, and formaldehyde absorption liquid is formed by amino-containing substances such as amino acid and one or more of auxiliary agents such as sodium acetate, ethanol and water, and is used for absorbing and immobilizing formaldehyde through an aldehyde-amine reaction. The main body of the secondary absorption unit is a secondary micro bubbler, and formaldehyde absorption liquid or one of hydrogen peroxide, hydrogen peroxide neutral solution and hydrogen peroxide alkaline solution is adopted. The compound formed by the formaldehyde and the absorption liquid is relatively stable, the problems of capacity limitation and secondary formaldehyde release of the formaldehyde are avoided, and the absorption product has small toxic and side effects on a human body and good environmental effect; the problems of secondary pollution and pollutant transfer generated when a fresh air system is adopted are avoided; the absorption liquid has large absorption capacity to formaldehyde and long replacement period, and the reserved curing liquid injection port and the reserved liquid discharge port are convenient to replace.

Description

Indoor air multi-pollutant purifying device
Technical Field
The invention belongs to the field of gas purification, and particularly relates to an indoor air multi-pollutant purification device.
Background
Along with the development of social economy and the acceleration of urbanization in China, the living standard of residents is increasingly improved, the importance of people on living quality and health is increasingly higher, but along with the continuous deterioration of atmospheric environment and the problem of indoor air pollution caused by the indoor decoration process, people pay more attention to the indoor PM, and the indoor PM is used for solving the problems of environmental pollution, environmental pollution and environmental pollution2.5And the problem of excessive formaldehyde is the most prominent. Two main treatment modes of passive treatment and active treatment are commonly adopted in the prior art for formaldehyde pollution. The formaldehyde pollution is passively treated, the treatment time is long, the effect is limited, and the social needs cannot be met. Currently, active formaldehyde treatment modes are mainly divided into three main types. The first is to use active carbon and other adsorbing material in air purifierThe method for adsorbing and removing formaldehyde has the problems that the adsorbing capacity of the adsorbent to formaldehyde is limited, the equilibrium adsorption capacity of formaldehyde is low particularly under low formaldehyde partial pressure, and the problem of re-release of the adsorbed formaldehyde can exist. The second method is to degrade formaldehyde by adopting a photodegradation technology to generate carbon dioxide and water, and the method has the problems that the sources of oxidant components in the photodegradation technology are fuzzy, most of the methods adopt ultraviolet light to degrade formaldehyde, intermediate products such as formic acid and carbon monoxide are possibly generated in the degradation process, and secondary pollution is easily caused. The third type is that a fresh air system is adopted indoors, outdoor air is filtered and then is pressed into the room through a fan, indoor micro-positive pressure is kept, and indoor formaldehyde is discharged outdoors. Although the method can effectively guarantee the indoor air quality, the method has the problem of pollutant transfer because the outdoor air quality is sacrificed to replace the indoor air quality as a whole.
The prior art needs a purifying device for multi-pollutants in indoor air, which can break through the capacity limitation in the adsorption treatment and avoid the problem of secondary release of formaldehyde, and can not cause the problems of secondary pollution possibly generated in the photodegradation process and pollutant transfer generated by a fresh air system.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art. Therefore, the invention provides an indoor air multi-pollutant purification device which can treat PM2.5The problem of removing aldehydes represented by formaldehyde is solved.
In order to achieve the purpose, the invention provides a technical scheme of an indoor air multi-pollutant purification device. An indoor air multi-pollutant purification device, comprising: the formaldehyde absorption device comprises a shell, a formaldehyde absorption unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the formaldehyde absorption unit includes: a fan, an air flow meter and a micro bubbler; an air inlet of the micro bubbler is connected with an air outlet of the fan through a reducer union, and an air flow meter is arranged between the micro bubbler and the air outlet of the fan to meter the air quantity; the fan is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter measures the air flow passing through by an air flow sensor; the whole micro-bubbler is of a cylindrical structure and comprises: the air inlet, the gas buffer cavity, the gas distribution pipe, the curing liquid pool, the purified air outlet pipe, the liquid injection port and the liquid discharge port are sequentially communicated; the liquid injection port and the liquid discharge port are communicated with the solidified liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Preferably, the formaldehyde-containing gas enters the gas buffer cavity at the upper part of the micro-bubbler through an air inlet at the central position of the upper part of the micro-bubbler, then enters the curing liquid pool at the bottom of the micro-bubbler through a gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool, and the purified gas is discharged through a purified air outlet pipe at the lateral direction of the middle part of the micro-bubbler; the gas buffer cavity is connected with an air inlet of the micro bubbler and an air inlet of the gas distribution pipe; the gas outlets of the gas distribution pipes are uniformly distributed at the lower part of the micro bubbler and are communicated with the solidified liquid pool, a gap with a certain height is reserved between the gas outlets of the gas distribution pipes and the bottom of the micro bubbler, and the gas outlets of the gas distribution pipes are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool; the space which is arranged outside the gas distribution pipe and is positioned between the gas buffer cavity and the absorption liquid level is connected with the outside through the purified air outlet pipe; the upper part of the micro bubbler penetrates through the shell to be provided with a liquid injection port, and the bottom part of the micro bubbler penetrates through the shell to be provided with a liquid discharge pipe orifice.
Preferably, the indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port and the liquid discharge port are sealed by a rubber cap when formaldehyde is absorbed.
Preferably, the curing absorption liquid adopts one or more of amino acid and acrylic acid amide to cure formaldehyde through aldehyde-amine reaction.
In order to achieve the purpose of the invention, the invention provides a second technical scheme of an indoor air multi-pollutant purification device. An indoor air multi-pollutant purification device, comprising: the device comprises a shell, a particulate matter filtering unit, a formaldehyde absorbing unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit is arranged at an air inlet of the fan, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh internal piece prevents the filter membrane from being sucked into the fan;
the formaldehyde absorption unit includes: a fan, an air flow meter and a micro bubbler; an air inlet of the micro bubbler is connected with an air outlet of the fan through a reducer union, and an air flow meter is arranged between the micro bubbler and the air outlet of the fan to meter the air quantity; the fan is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter measures the air flow passing through by an air flow sensor; the whole micro-bubbler is of a cylindrical structure and comprises: the air inlet, the gas buffer cavity, the gas distribution pipe, the curing liquid pool, the purified air outlet pipe, the liquid injection port and the liquid discharge port are sequentially communicated; the liquid injection port and the liquid discharge port are communicated with the solidified liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Preferably, the formaldehyde-containing gas enters the gas buffer cavity at the upper part of the micro-bubbler through an air inlet at the central position of the upper part of the micro-bubbler, then enters the curing liquid pool at the bottom of the micro-bubbler through a gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool, and the purified gas is discharged through a purified air outlet pipe at the lateral direction of the middle part of the micro-bubbler; the gas buffer cavity is connected with an air inlet of the micro bubbler and an air inlet of the gas distribution pipe; the gas outlets of the gas distribution pipes are uniformly distributed at the lower part of the micro bubbler and are communicated with the solidified liquid pool, a gap with a certain height is reserved between the gas outlets of the gas distribution pipes and the bottom of the micro bubbler, and the gas outlets of the gas distribution pipes are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool; the space which is arranged outside the gas distribution pipe and is positioned between the gas buffer cavity and the absorption liquid level is connected with the outside through the purified air outlet pipe; the upper part of the micro bubbler penetrates through the shell to be provided with a liquid injection port, and the bottom part of the micro bubbler penetrates through the shell to be provided with a liquid discharge pipe orifice.
Preferably, the indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port and the liquid discharge port are sealed by a rubber cap when formaldehyde is absorbed.
Preferably, the curing absorption liquid adopts one or more of amino acid and acrylic acid amide to cure formaldehyde through aldehyde-amine reaction.
Preferably, the filtration membrane is one or more of a HEPA filtration membrane, a PTFE filtration membrane, a quartz filtration membrane, a polypropylene filtration membrane, and the like.
In order to achieve the purpose of the invention, the invention provides a third technical scheme of an indoor air multi-pollutant purification device. An indoor air multi-pollutant purification device, comprising: the device comprises a shell, a particulate matter filtering unit, a formaldehyde absorbing unit, a secondary absorbing unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit is arranged at an air inlet of the fan, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh internal piece prevents the filter membrane from being sucked into the fan;
the formaldehyde absorption unit includes: a fan, an air flow meter and a micro bubbler; an air inlet of the micro bubbler is connected with an air outlet of the fan through a reducer union, and an air flow meter is arranged between the micro bubbler and the air outlet of the fan to meter the air quantity; the fan is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter measures the air flow passing through by an air flow sensor; the whole micro-bubbler is of a cylindrical structure and comprises: the air inlet, the gas buffer cavity, the gas distribution pipe, the curing liquid pool, the purified air outlet pipe, the liquid injection port and the liquid discharge port are sequentially communicated; the liquid injection port and the liquid discharge port are communicated with the solidified liquid pool;
the secondary absorption unit comprises a secondary micro bubbler; the air inlet of the secondary micro bubbler is connected with the air outlet of the micro bubbler through a hose to form a series structure; the whole cylinder structure that is of secondary miniature bubbler, it includes: the secondary air inlet, the secondary gas buffer cavity, the secondary gas distribution pipe, the secondary curing liquid pool, the secondary purified air outlet pipe, the secondary liquid injection port and the secondary liquid discharge port are sequentially communicated; the secondary liquid injection port and the secondary liquid discharge port are communicated with the secondary curing liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Preferably, the formaldehyde-containing gas enters the gas buffer cavity at the upper part of the micro-bubbler through an air inlet at the central position of the upper part of the micro-bubbler, then enters the curing liquid pool at the bottom of the micro-bubbler through a gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool, and the purified gas is discharged through a purified air outlet pipe at the lateral direction of the middle part of the micro-bubbler; the gas buffer cavity is connected with an air inlet of the micro bubbler and an air inlet of the gas distribution pipe; the gas outlets of the gas distribution pipes are uniformly distributed at the lower part of the micro bubbler and are communicated with the solidified liquid pool, a gap with a certain height is reserved between the gas outlets of the gas distribution pipes and the bottom of the micro bubbler, and the gas outlets of the gas distribution pipes are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool; the space which is arranged outside the gas distribution pipe and is positioned between the gas buffer cavity and the absorption liquid level is connected with the outside through the purified air outlet pipe; the upper part of the micro bubbler penetrates through the shell to be provided with a liquid injection port, and the bottom part of the micro bubbler penetrates through the shell to be provided with a liquid discharge pipe orifice.
Preferably, the gas purified by the micro-bubbler enters the secondary gas buffer cavity positioned at the upper part of the secondary micro-bubbler from a secondary air inlet at the central position of the upper part of the secondary micro-bubbler, then enters the secondary curing liquid pool positioned at the bottom of the secondary micro-bubbler through a secondary gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the secondary curing liquid pool, and the purified gas is discharged through a secondary purified air outlet pipe positioned at the lateral direction of the middle part of the secondary micro-bubbler; the secondary gas buffer cavity is connected with a secondary air inlet of the secondary micro bubbler and an air inlet of the secondary gas distribution pipe; the gas outlets of the secondary gas distribution pipes are uniformly distributed at the lower part of the secondary micro bubbler and are communicated with the secondary curing liquid pool, a gap with a certain height is reserved between the gas outlets of the secondary gas distribution pipes and the bottom of the secondary micro bubbler, and the gas outlets of the secondary gas distribution pipes are submerged below the absorption liquid level for a certain distance after the secondary curing absorption liquid is added into the secondary curing liquid pool; the space which is arranged outside the secondary gas distribution pipe and between the secondary gas buffer cavity and the secondary absorption liquid level is connected with the outside through the secondary purified air outlet pipe; the upper part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid injection port, and the bottom part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid discharge pipe port.
Preferably, the indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port, the liquid discharge port, the secondary liquid injection port and the secondary liquid discharge port are sealed by rubber caps when formaldehyde is absorbed.
Preferably, the curing absorption liquid adopts one or more of amino acid and acrylic acid amide to cure formaldehyde through aldehyde-amine reaction.
Preferably, the filtration membrane is one or more of a HEPA filtration membrane, a PTFE filtration membrane, a quartz filtration membrane, a polypropylene filtration membrane, and the like.
Preferably, the secondary curing absorption liquid adopts formaldehyde absorption unit curing liquid or one of hydrogen peroxide, hydrogen peroxide neutral solution and hydrogen peroxide alkaline solution.
The specific formaldehyde curing and absorbing process comprises the following steps: PM (particulate matter) in air polluted by formaldehyde is removed through a particulate matter filtering unit2.5Then the air quantity is measured by an air flow meter, enters a gas buffer cavity at the upper part of the micro bubbler from a gas inlet at the central position of the upper part of the micro bubbler of the formaldehyde absorption unit under the blowing action of a fan, and then enters a position through a gas distribution pipeUniformly bubbling in the formaldehyde curing liquid at the bottom of the micro bubbler to form a gas-liquid absorption layer for absorbing and curing formaldehyde; the purified gas is discharged out of the micro bubbler through a purified air outlet pipe arranged at the lateral side of the middle part. The curing liquid adopts one or more of amino acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction. The back side of the micro bubbler of the formaldehyde absorption unit can be selectively provided with a secondary micro bubbler of the secondary absorption unit, the formaldehyde absorption unit and the secondary absorption unit both adopt micro bubblers with the same structure, and the two micro bubblers are in a series mode and are used for enhancing formaldehyde absorption or removing other gases.
Compared with the prior art, the invention has the following advantages:
first, formaldehyde and curing liquid form a compound which is relatively stable, the problems of capacity limitation and secondary formaldehyde release which can occur in a formaldehyde adsorption method can be avoided, and the problems of secondary pollution which can occur in a photodegradation process and pollutant transfer which is generated when a fresh air system is adopted are also avoided.
Secondly, the curing liquid has larger absorption capacity to formaldehyde, the replacement cycle is long, and the device reserves a curing liquid injection port and a discharge port, so that the curing absorption liquid is convenient to replace.
And thirdly, the formaldehyde is absorbed by adopting an active absorption mode, the absorption and solidification speed is high compared with a passive absorption mode, and the formaldehyde treatment improvement effect is obvious.
In conclusion, the invention integrates the particle filtering function through solidification and absorption, has simple optimized multi-pollutant removal process flow, less equipment investment and low operation cost, and can be used for the existing PM2.5The beneficial effect of effectively removing indoor formaldehyde is achieved on the basis of treatment.
Drawings
Fig. 1 is a purification flow chart of a first technical scheme of the indoor air multi-pollutant purification device.
Fig. 2 is a purification flow chart of a second technical scheme of the indoor air multi-pollutant purification device.
Fig. 3 is a purification flow chart of a third technical scheme of the indoor air multi-pollutant purification device.
Fig. 4 is a schematic structural view of a micro-bubbler of the indoor air multi-pollutant purification apparatus according to the present invention.
The list of labels in the figure is: 1. particulate matter filter unit, 2, fan, 3, air flow meter, 4, miniature bubbler, 5, second grade absorption unit, 6, air inlet, 7, gas buffer chamber, 8, gas distribution pipe, 9, solidification liquid pond, 10, air-purifying outlet duct, 11, notes liquid mouth, 12, leakage fluid dram.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Three embodiments of the invention are described in detail with reference to figures 1-4.
The first embodiment:
see figures 1, 4.
An indoor air multi-pollutant purification device, comprising: the formaldehyde absorption device comprises a shell, a formaldehyde absorption unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the formaldehyde absorption unit includes: a fan 2, an air flow meter 3 and a micro bubbler 4; an air inlet 6 of the micro bubbler is connected with an air outlet of the fan 2 through a reducer union, and an air flow meter 3 is arranged between the micro bubbler 4 and the air outlet of the fan 2 for metering the air volume; the fan 2 is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter 3 measures the air flow passing through by an air flow sensor; the entire micro bubbler 4 has a cylindrical structure, and includes: the device comprises an air inlet 6, a gas buffer cavity 7, a gas distribution pipe 8, a solidified liquid pool 9, a purified air outlet pipe 10, a liquid injection port 11 and a liquid discharge port 12, wherein the air inlet 6, the gas buffer cavity 7, the gas distribution pipe 8, the solidified liquid pool 9 and the purified air outlet pipe 10 are sequentially communicated; the liquid injection port 11 and the liquid discharge port 12 are communicated with the solidified liquid pool 9;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Formaldehyde-containing gas enters the gas buffer cavity 7 at the upper part of the micro-bubbler 4 through an air inlet 6 at the central position of the upper part of the micro-bubbler 4, then enters the curing liquid pool 9 at the bottom of the micro-bubbler 4 through a gas distribution pipe 8 to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool 9, and the purified gas is discharged through a purified air outlet pipe 10 at the lateral direction of the middle part of the micro-bubbler 4; the gas buffer cavity 7 is connected with an air inlet 6 of the micro-bubbler 4 and an air inlet of the gas distribution pipe 8; the gas outlets of the gas distribution pipes 8 are uniformly distributed at the lower part of the micro bubbler 4 and are communicated with the solidified liquid pool 9, gaps with a certain height are reserved between the gas outlets of the gas distribution pipes 8 and the bottom of the micro bubbler 4, and the gas outlets of the gas distribution pipes 8 are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool 9; the space which is arranged outside the gas distribution pipe 8 and is positioned between the gas buffer cavity 7 and the absorption liquid level is connected with the outside through the purified air outlet pipe 10; the upper part of the micro-bubbler 4 penetrates through the shell to be provided with a liquid injection port 11, and the bottom part penetrates through the shell to be provided with a liquid discharge pipe port 12.
The indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port 11 and the liquid discharge port 12 are sealed by rubber caps when formaldehyde is absorbed.
The curing absorption liquid adopts one or more of amino acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction.
Second embodiment:
see fig. 2, 4.
An indoor air multi-pollutant purification device, comprising: the device comprises a shell, a particulate matter filtering unit 1, a formaldehyde absorbing unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit 1 includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit 1 is arranged at an air inlet of the fan 2, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh-shaped internals prevent the filter membrane from being sucked into the fan 2;
the formaldehyde absorption unit includes: a fan 2, an air flow meter 3 and a micro bubbler 4; an air inlet 6 of the micro bubbler 4 is connected with an air outlet of the fan 2 through a reducer union, and the air flow meter 3 is arranged between the micro bubbler 4 and the air outlet of the fan 2 for metering the air flow; the fan 2 is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter 3 measures the air flow passing through by an air flow sensor; the entire micro bubbler 4 has a cylindrical structure, and includes: the device comprises an air inlet 6, a gas buffer cavity 7, a gas distribution pipe 8, a solidified liquid pool 9, a purified air outlet pipe 10, a liquid injection port 11 and a liquid discharge port 12, wherein the air inlet 6, the gas buffer cavity 7, the gas distribution pipe 8, the solidified liquid pool 9 and the purified air outlet pipe 10 are sequentially communicated; the liquid injection port 11 and the liquid discharge port 12 are communicated with the solidified liquid pool 9;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Formaldehyde-containing gas enters the gas buffer cavity 7 at the upper part of the micro-bubbler 4 through an air inlet 6 at the central position of the upper part of the micro-bubbler 4, then enters the curing liquid pool 9 at the bottom of the micro-bubbler 4 through a gas distribution pipe 8 to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool 9, and the purified gas is discharged through a purified air outlet pipe 10 at the lateral direction of the middle part of the micro-bubbler 4; the gas buffer cavity 7 is connected with an air inlet 6 of the micro-bubbler 4 and an air inlet of the gas distribution pipe 8; the gas outlets of the gas distribution pipes 8 are uniformly distributed at the lower part of the micro bubbler 4 and are communicated with the solidified liquid pool 9, gaps with a certain height are reserved between the gas outlets of the gas distribution pipes 8 and the bottom of the micro bubbler 4, and the gas outlets of the gas distribution pipes 8 are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool 9; the space which is arranged outside the gas distribution pipe 8 and is positioned between the gas buffer cavity 7 and the absorption liquid level is connected with the outside through the purified air outlet pipe 10; the upper part of the micro-bubbler 4 penetrates through the shell to be provided with a liquid injection port 11, and the bottom part penetrates through the shell to be provided with a liquid discharge pipe port 12.
The indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port 11 and the liquid discharge port 12 are sealed by rubber caps when formaldehyde is absorbed.
The curing absorption liquid adopts one or more of phenylamine acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction.
The filtering membrane is one or more of HEPA filtering membrane, PTFE filtering membrane, quartz filtering membrane, polypropylene filtering membrane, etc.
The third embodiment:
see fig. 3-4.
An indoor air multi-pollutant purification device, comprising: the device comprises a shell, a particulate matter filtering unit 1, a formaldehyde absorbing unit, a secondary absorbing unit 5 and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit 1 includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit 1 is arranged at an air inlet of the fan 2, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh-shaped internals prevent the filter membrane from being sucked into the fan 2;
the formaldehyde absorption unit includes: a fan 2, an air flow meter 3 and a micro bubbler 4; an air inlet 6 of the micro bubbler 4 is connected with an air outlet of the fan 2 through a reducer union, and the air flow meter 3 is arranged between the micro bubbler 4 and the air outlet of the fan 2 for metering the air flow; the fan 2 is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter 3 measures the air flow passing through by an air flow sensor; the entire micro bubbler 4 has a cylindrical structure, and includes: the device comprises an air inlet 6, a gas buffer cavity 7, a gas distribution pipe 8, a solidified liquid pool 9, a purified air outlet pipe 10, a liquid injection port 11 and a liquid discharge port 12, wherein the air inlet 6, the gas buffer cavity 7, the gas distribution pipe 8, the solidified liquid pool 9 and the purified air outlet pipe 10 are sequentially communicated; the liquid injection port 11 and the liquid discharge port 12 are communicated with the solidified liquid pool 9;
the secondary absorption unit 5 includes a secondary micro bubbler; the air inlet of the secondary micro bubbler is connected with the air outlet of the micro bubbler through a hose to form a series structure; the whole cylinder structure that is of secondary miniature bubbler, it includes: the secondary air inlet, the secondary gas buffer cavity, the secondary gas distribution pipe, the secondary curing liquid pool, the secondary purified air outlet pipe, the secondary liquid injection port and the secondary liquid discharge port are sequentially communicated; the secondary liquid injection port and the secondary liquid discharge port are communicated with the secondary curing liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
Formaldehyde-containing gas enters the gas buffer cavity 7 at the upper part of the micro-bubbler 4 through an air inlet 6 at the central position of the upper part of the micro-bubbler 4, then enters the curing liquid pool 9 at the bottom of the micro-bubbler 4 through a gas distribution pipe 8 to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by the absorption liquid in the curing liquid pool 9, and the purified gas is discharged through a purified air outlet pipe 10 at the lateral direction of the middle part of the micro-bubbler 4; the gas buffer cavity 7 is connected with an air inlet 6 of the micro-bubbler 4 and an air inlet of the gas distribution pipe 8; the gas outlets of the gas distribution pipes 8 are uniformly distributed at the lower part of the micro bubbler 4 and are communicated with the solidified liquid pool 9, gaps with a certain height are reserved between the gas outlets of the gas distribution pipes 8 and the bottom of the micro bubbler 4, and the gas outlets of the gas distribution pipes 8 are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool 9; the space which is arranged outside the gas distribution pipe 8 and is positioned between the gas buffer cavity 7 and the absorption liquid level is connected with the outside through the purified air outlet pipe 10; the upper part of the micro-bubbler 4 penetrates through the shell to be provided with a liquid injection port 11, and the bottom part penetrates through the shell to be provided with a liquid discharge pipe port 12.
The gas purified by the micro-bubbler 4 enters the secondary gas buffer cavity positioned at the upper part of the secondary micro-bubbler from a secondary air inlet at the central position of the upper part of the secondary micro-bubbler, then enters the secondary curing liquid pool positioned at the bottom of the secondary micro-bubbler through a secondary gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by absorption liquid in the secondary curing liquid pool, and the purified gas is discharged through a secondary purified air outlet pipe positioned at the lateral direction of the middle part of the secondary micro-bubbler; the secondary gas buffer cavity is connected with a secondary air inlet of the secondary micro bubbler and an air inlet of the secondary gas distribution pipe; the gas outlets of the secondary gas distribution pipes are uniformly distributed at the lower part of the secondary micro bubbler and are communicated with the secondary curing liquid pool, a gap with a certain height is reserved between the gas outlets of the secondary gas distribution pipes and the bottom of the secondary micro bubbler, and the gas outlets of the secondary gas distribution pipes are submerged below the absorption liquid level for a certain distance after the secondary curing absorption liquid is added into the secondary curing liquid pool; the space which is arranged outside the secondary gas distribution pipe and between the secondary gas buffer cavity and the secondary absorption liquid level is connected with the outside through the secondary purified air outlet pipe; the upper part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid injection port, and the bottom part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid discharge pipe port.
The indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and when formaldehyde is absorbed, the liquid injection port 11, the liquid discharge port 12, the secondary liquid injection port and the secondary liquid discharge port are sealed by rubber caps.
The curing absorption liquid adopts one or more of amino acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction.
The filtering membrane is one or more of HEPA filtering membrane, PTFE filtering membrane, quartz filtering membrane, polypropylene filtering membrane, etc.
The secondary curing absorption liquid adopts formaldehyde absorption unit curing liquid or one of hydrogen peroxide, hydrogen peroxide neutral solution and hydrogen peroxide alkaline solution.
The specific formaldehyde curing and absorbing process comprises the following steps: PM (particulate matter) in air polluted by formaldehyde is removed through a particulate matter filtering unit2.5Then the air quantity is measured by an air flow meter, and enters the micro-bubble device from a gas inlet positioned at the central position of the upper part of the micro-bubble device of the formaldehyde absorption unit under the blowing action of a fanThe gas buffer cavity at the upper part of the bubbler is filled into the formaldehyde curing liquid at the bottom of the micro bubbler through a gas distribution pipe for uniform bubbling to form a gas-liquid absorption layer for absorbing and curing formaldehyde; the purified gas is discharged out of the micro bubbler through a purified air outlet pipe arranged at the lateral side of the middle part. The curing liquid adopts one or more of amino acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction. The back side of the micro bubbler of the formaldehyde absorption unit can be provided with a secondary bubbler of the secondary absorption unit, the formaldehyde absorption unit and the secondary absorption unit adopt micro bubblers with the same structure, and the two micro bubblers are in a series mode and used for enhancing formaldehyde absorption or removing other gases.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. An indoor air multi-pollutant purifying device is characterized by comprising: the device comprises a shell, a particulate matter filtering unit, a formaldehyde absorbing unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit is arranged at an air inlet of the fan, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh internal piece prevents the filter membrane from being sucked into the fan;
the formaldehyde absorption unit includes: a fan, an air flow meter and a micro bubbler; an air inlet of the micro bubbler is connected with an air outlet of the fan through a reducer union, and the air flow meter is arranged between the micro bubbler and the air outlet of the fan to meter the air quantity; the fan is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter measures the air flow passing through by an air flow sensor; the whole micro-bubbler is of a cylindrical structure and comprises: the air inlet, the gas buffer cavity, the gas distribution pipe, the curing liquid pool, the purified air outlet pipe, the liquid injection port and the liquid discharge port are sequentially communicated; the liquid injection port and the liquid discharge port are communicated with the solidified liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment;
formaldehyde-containing gas enters the gas buffer cavity at the upper part of the micro-bubbler through an air inlet at the central position of the upper part of the micro-bubbler, then enters the curing liquid pool at the bottom of the micro-bubbler through a gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by absorption liquid in the curing liquid pool, and the purified gas is discharged through a purified air outlet pipe at the lateral direction of the middle part of the micro-bubbler; the gas buffer cavity is connected with an air inlet of the micro bubbler and an air inlet of the gas distribution pipe; the gas outlets of the gas distribution pipes are uniformly distributed at the lower part of the micro bubbler and are communicated with the solidified liquid pool, a gap with a certain height is reserved between the gas outlets of the gas distribution pipes and the bottom of the micro bubbler, and the gas outlets of the gas distribution pipes are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool; the space which is arranged outside the gas distribution pipe and is positioned between the gas buffer cavity and the absorption liquid level is connected with the outside through the purified air outlet pipe; the upper part of the micro bubbler penetrates through the shell to be provided with a liquid injection port, and the bottom part of the micro bubbler penetrates through the shell to be provided with a liquid discharge pipe orifice.
2. An indoor air multi-pollutant purifying device according to claim 1, characterized in that: the indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and the liquid injection port and the liquid discharge port are sealed by a rubber cap when the formaldehyde is absorbed.
3. An indoor air multi-pollutant purifying device is characterized by comprising: the device comprises a shell, a particulate matter filtering unit, a formaldehyde absorbing unit, a secondary absorbing unit and a control operation unit;
the housing includes: the display device comprises a panel, a display screen and a box body; the display screen is arranged on the panel and displays operation data and conditions of all parts of the equipment; the panel is arranged on the front surface of the box body;
the particulate matter filtering unit includes: the outer-layer filtering shell, the filtering layer and the mesh internal part are sequentially connected according to the air inlet direction; the particle filtering unit is arranged at an air inlet of the fan, and the outer filtering shell is a protective layer to protect the filtering layer inside from being blocked and damaged by foreign objects; the filter layer consists of a filter gauze and a filter membrane, and the filter membrane is in a corrugated layout; the mesh internal piece prevents the filter membrane from being sucked into the fan;
the formaldehyde absorption unit includes: a fan, an air flow meter and a micro bubbler; an air inlet of the micro bubbler is connected with an air outlet of the fan through a reducer union, and the air flow meter is arranged between the micro bubbler and the air outlet of the fan to meter the air quantity; the fan is a fan driven by a brushless direct current motor or an alternating current motor; the air flow meter measures the air flow passing through by an air flow sensor; the whole micro-bubbler is of a cylindrical structure and comprises: the air inlet, the gas buffer cavity, the gas distribution pipe, the curing liquid pool, the purified air outlet pipe, the liquid injection port and the liquid discharge port are sequentially communicated; the liquid injection port and the liquid discharge port are communicated with the solidified liquid pool;
formaldehyde-containing gas enters the gas buffer cavity at the upper part of the micro-bubbler through an air inlet at the central position of the upper part of the micro-bubbler, then enters the curing liquid pool at the bottom of the micro-bubbler through a gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by absorption liquid in the curing liquid pool, and the purified gas is discharged through a purified air outlet pipe at the lateral direction of the middle part of the micro-bubbler; the gas buffer cavity is connected with an air inlet of the micro bubbler and an air inlet of the gas distribution pipe; the gas outlets of the gas distribution pipes are uniformly distributed at the lower part of the micro bubbler and are communicated with the solidified liquid pool, a gap with a certain height is reserved between the gas outlets of the gas distribution pipes and the bottom of the micro bubbler, and the gas outlets of the gas distribution pipes are submerged below the absorption liquid level for a certain distance after the solidified absorption liquid is added into the solidified liquid pool; the space which is arranged outside the gas distribution pipe and is positioned between the gas buffer cavity and the absorption liquid level is connected with the outside through the purified air outlet pipe; the upper part of the micro bubbler penetrates through the shell to be provided with a liquid injection port, and the bottom part of the micro bubbler penetrates through the shell to be provided with a liquid discharge pipe port
The secondary absorption unit comprises a secondary micro bubbler; the air inlet of the secondary micro bubbler is connected with the air outlet of the micro bubbler through a hose to form a series structure; the whole cylinder structure that is of secondary miniature bubbler, it includes: the secondary air inlet, the secondary gas buffer cavity, the secondary gas distribution pipe, the secondary curing liquid pool, the secondary purified air outlet pipe, the secondary liquid injection port and the secondary liquid discharge port are sequentially communicated; the secondary liquid injection port and the secondary liquid discharge port are communicated with the secondary curing liquid pool;
the control operation unit comprises a control switch, and the control switch controls the on-off of power supplies of all parts of the equipment.
4. The indoor air multi-pollutant purifying device according to claim 3, characterized in that: the gas purified by the micro-bubbler enters the secondary gas buffer cavity positioned at the upper part of the secondary micro-bubbler from a secondary air inlet at the central position of the upper part of the secondary micro-bubbler, then enters the secondary curing liquid pool positioned at the bottom of the secondary micro-bubbler through a secondary gas distribution pipe to be uniformly bubbled to form a gas-liquid absorption layer, formaldehyde in the gas is absorbed and cured by absorption liquid in the secondary curing liquid pool, and the purified gas is discharged through a secondary purified air outlet pipe positioned at the lateral direction of the middle part of the secondary micro-bubbler; the secondary gas buffer cavity is connected with a secondary air inlet of the secondary micro bubbler and an air inlet of the secondary gas distribution pipe; the gas outlets of the secondary gas distribution pipes are uniformly distributed at the lower part of the secondary micro bubbler and are communicated with the secondary curing liquid pool, a gap with a certain height is reserved between the gas outlets of the secondary gas distribution pipes and the bottom of the secondary micro bubbler, and the gas outlets of the secondary gas distribution pipes are submerged below the absorption liquid level for a certain distance after the secondary curing absorption liquid is added into the secondary curing liquid pool; the space which is arranged outside the secondary gas distribution pipe and between the secondary gas buffer cavity and the secondary absorption liquid level is connected with the outside through the secondary purified air outlet pipe; the upper part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid injection port, and the bottom part of the secondary micro bubbler penetrates through the shell to be provided with a secondary liquid discharge pipe port.
5. An indoor air multi-pollutant purifying device according to claim 3, characterised in that: the indoor air multi-pollutant purification device treats formaldehyde in an active treatment mode, and when formaldehyde is absorbed, the liquid injection port, the liquid discharge port, the secondary liquid injection port and the secondary liquid discharge port are sealed by rubber caps.
6. An indoor air multi-pollutant purifying device according to any one of claims 1 or 3, characterised in that: the curing absorption liquid adopts one or more of amino acid and acrylic acid amide, and formaldehyde is cured through aldehyde-amine reaction.
7. An indoor air multi-pollutant purifying device according to any one of claims 1 or 3, characterised in that: the filtering membrane is one or more of HEPA filtering membrane, PTFE filtering membrane, quartz filtering membrane and polypropylene filtering membrane.
8. An indoor air multi-pollutant purifying device according to claim 3, characterised in that: the secondary curing absorption liquid adopts formaldehyde absorption unit curing liquid or one of hydrogen peroxide, hydrogen peroxide neutral solution and hydrogen peroxide alkaline solution.
CN201711008649.8A 2017-10-25 2017-10-25 Indoor air multi-pollutant purifying device Active CN107511054B (en)

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CN109603489B (en) * 2019-01-31 2021-09-24 厦门理工学院 Formaldehyde purification device and method for treating gas
CN114279040B (en) * 2021-12-31 2023-09-26 深圳市康弘智能健康科技股份有限公司 Air purifier for removing formaldehyde from amino acid

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CN101007203A (en) * 2006-01-23 2007-08-01 胡默言 An amino acid type formol release agent and its preparation method
CN205109372U (en) * 2015-10-26 2016-03-30 北京市劳动保护科学研究所 Remove formaldehyde device
CN106512262A (en) * 2016-12-30 2017-03-22 安徽壮志公共安全科技有限公司 Efficient fire extinguishing device capable of quickly absorbing harmful gas

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US9174903B2 (en) * 2013-03-15 2015-11-03 Gas Technologies Llc Reactive scrubbing for upgrading product value, simplifying process operation and product handling

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CN101007203A (en) * 2006-01-23 2007-08-01 胡默言 An amino acid type formol release agent and its preparation method
CN205109372U (en) * 2015-10-26 2016-03-30 北京市劳动保护科学研究所 Remove formaldehyde device
CN106512262A (en) * 2016-12-30 2017-03-22 安徽壮志公共安全科技有限公司 Efficient fire extinguishing device capable of quickly absorbing harmful gas

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