CN114405244A - Formaldehyde purification device - Google Patents
Formaldehyde purification device Download PDFInfo
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- CN114405244A CN114405244A CN202210103657.5A CN202210103657A CN114405244A CN 114405244 A CN114405244 A CN 114405244A CN 202210103657 A CN202210103657 A CN 202210103657A CN 114405244 A CN114405244 A CN 114405244A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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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
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
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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
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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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
- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40084—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by exchanging used adsorbents with fresh adsorbents
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
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Abstract
The invention relates to a formaldehyde purification device, which comprises an air inlet and an air outlet, wherein the air inlet and the air outlet are sequentially communicated with an air extractor, a formaldehyde adsorption part, a first detection sensor and a second detection sensor which are respectively arranged at two ends of the formaldehyde adsorption part through an air flow pipeline, meanwhile, a backflow part is also arranged for controlling the cyclic adsorption of air which does not reach the standard, and the formaldehyde adsorption part comprises an adsorption tower of which two ends are respectively communicated with the air flow pipeline, and a formaldehyde adsorption layer filled in the adsorption tower. The formaldehyde purification device provided by the invention can purify the air which does not accord with the set purification effect again through the backflow pipeline, so that the concentration of the formaldehyde discharged into the air is ensured to reach the standard, and the air purification effect can be further ensured through the arrangement of the spoiler and the double adsorption of the potassium permanganate adsorption layer matched with the active carbon adsorption layer.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a formaldehyde purification device.
Background
Indoor air pollution includes chemical pollution, biological pollution and physical pollution. The chemical pollution refers to pollution caused by chemical substances, such as formaldehyde, benzene series, ammonia gas, ammonia and its daughter and suspended particulate matters. Formaldehyde is colorless and has irritant gas, and is one of the main indoor pollutants due to wide source, high toxicity, long pollution time and the like. Not only affects the upper respiratory tract and the lung of a human body, stimulates allergy, causes the abnormality of liver function, immune function and nervous system, and causes the partial loss of central function, but also can cause the occurrence of various cancers by contacting high-quality formaldehyde for a long time. The formaldehyde pollutants are harmful to the health of human bodies, so that the effective removal of the formaldehyde pollutants is extremely necessary. Current formaldehyde purification device usually can not evaluate the effect after the purification, and purifying effect hardly obtains the guarantee.
Disclosure of Invention
The invention aims to provide a formaldehyde purification device which can realize formaldehyde purification and purification effect evaluation, can evaluate whether cyclic purification is needed or not according to the purification effect and effectively ensures the purification effect.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a formaldehyde purification device, includes air inlet, gas outlet, communicate air extractor, formaldehyde adsorption portion and first detection sensor in proper order through the air flow line between air inlet and the gas outlet, formaldehyde adsorption portion include both ends communicate the adsorption tower of air flow line respectively and pack in formaldehyde adsorbed layer in the adsorption tower, first detection sensor is arranged in detecting the formaldehyde concentration from among the formaldehyde adsorbed layer in the air that flows.
Preferably, the formaldehyde adsorption layer comprises a potassium permanganate adsorption layer and an activated carbon adsorption layer.
As a preferred scheme, the formaldehyde purification device further comprises a color sensor, and the color sensor is arranged in the potassium permanganate adsorption layer.
Preferably, the formaldehyde purification device further comprises a second detection sensor, and the second detection sensor is arranged between the air extractor and the formaldehyde adsorption part and is used for detecting the concentration of formaldehyde in the air in an initial state.
Preferably, the formaldehyde purification device further comprises a backflow part, the backflow part comprises a backflow pipeline and a duplex solenoid valve, the duplex solenoid valve is arranged between the first detection sensor and the air outlet, one end of the backflow pipeline is communicated to an airflow pipeline between the second detection sensor and the formaldehyde adsorption part, and the other end of the backflow pipeline is connected to the duplex solenoid valve.
As a preferred scheme, the formaldehyde purification device further comprises a control system, and the control system comprises a single chip microcomputer and a display screen communicated with the single chip microcomputer.
Preferably, the formaldehyde purification device further comprises a spoiler arranged in the adsorption tower, wherein the spoiler is uniformly distributed with a plurality of through round holes in front of the formaldehyde adsorption layer.
Preferably, the adsorption tower comprises a first connecting part and a second connecting part which are sequentially connected, the first connecting part is used for arranging a spoiler, the second connecting part is used for filling the formaldehyde adsorption layer, and the first connecting part and the second connecting part are detachably connected.
Preferably, a sealing strip is connected between the first connecting part and the second connecting part.
Compared with the prior art, the invention has the beneficial effects that:
1) the first detection sensor and the second detection sensor for detecting formaldehyde are respectively arranged at the two ends of the formaldehyde adsorption layer, so that the original concentration and the purified concentration of formaldehyde can be measured, and the purification effect of the formaldehyde can be judged; further through the arrangement of the control system and the backflow part, the air which does not accord with the set purification effect can be purified again through the backflow pipeline, and the concentration of the formaldehyde discharged into the air is ensured to reach the standard;
2) the potassium permanganate adsorption layer is matched with the activated carbon adsorption layer for double adsorption, so that the air purification effect can be further ensured;
3) through the arrangement of the color sensor, the adsorption condition of the potassium permanganate adsorption layer can be judged, and the timely replacement of the filler is ensured;
4) the arrangement of the spoiler can reduce the circulation speed of air in the adsorption tower, thereby increasing the contact time of the air and the formaldehyde adsorption layer and improving the purification effect;
5) through setting up the adsorption tower into the structure that can dismantle the connection, be convenient for change the packing in the formaldehyde adsorbed layer in the adsorption tower.
Drawings
FIG. 1 is a schematic view of the overall structure of a formaldehyde purification apparatus according to the present invention;
FIG. 2 is a schematic view of the structure of a formaldehyde adsorption part according to the present invention;
FIG. 3 is a schematic structural view of a spoiler according to the present invention;
the various reference numbers in the figures mean:
1. a stationary housing; 2. an air inlet; 3. an air outlet; 4. an air flow conduit; 5. an air extractor; 6. a first detection sensor; 7. an adsorption tower; 8. a formaldehyde adsorption layer; 81. a potassium permanganate adsorbing layer; 82. an activated carbon adsorption layer; 9. a chip cartridge; 10. a display screen; 11. a color sensor; 12. a second detection sensor; 13. a return line; 14. a duplex solenoid valve; 15. a spoiler; 16. a first connection portion; 17. a second connecting portion; 18. a sealing strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1-3, the present embodiment discloses a formaldehyde purifying device, which includes a fixed housing 1, an air inlet 2 is disposed at an upper end of the fixed housing 1, an air outlet 3 is disposed at a side end of the fixed housing 1, an air extractor 5, a formaldehyde adsorption part and a first detecting sensor 6 are sequentially connected between the air inlet 2 and the air outlet 3 through an air flow pipe 4, the air extractor 5 is convenient for capturing air into the device, the formaldehyde adsorption part includes an adsorption tower 7 with two ends respectively connected to the air flow pipe 4 and a formaldehyde adsorption layer 8 filled in the adsorption tower 7, and the first detecting sensor 6 is used for detecting a formaldehyde concentration in the air flowing out from the formaldehyde adsorption layer 8. Specifically, the formaldehyde adsorption layer 8 comprises a potassium permanganate adsorption layer 81 and an active carbon adsorption layer 82 which are adjacently arranged, potassium permanganate has strong oxidizability, formaldehyde has strong reducibility, the potassium permanganate and the formaldehyde can react under a neutral condition, and the formaldehyde can be oxidized into carbonate and water which are harmless to a human body; the activated carbon is used as a material with a good adsorption effect, and can supplement and adsorb the air purified by the potassium permanganate adsorption layer 81, so that the formaldehyde purification effect is further improved; it is understood that the potassium permanganate adsorbing layer 81 and the activated carbon adsorbing layer 82 may be provided in plurality as necessary. First detection sensor 6 sets up behind formaldehyde adsorption unit, can detect formaldehyde concentration in the air after the absorption, judges whether formaldehyde content is up to standard.
Further, this embodiment still includes control system, specifically includes the singlechip and with the display screen 10 of singlechip communication, the singlechip is arranged in chip box 9 of fixed casing 1 upper end, display screen 10 sets up in the upper end of fixed casing 1. The singlechip of this embodiment adopts Arduino singlechip, and above-mentioned first detection sensor 6 adopts the WZ-S-K formaldehyde detection sensor of british datt company production, detects the formaldehyde concentration in the air, uses Arduino IDE software to write the procedure, through serial port communication, reads the data that formaldehyde detection sensor transmitted to calculate the formaldehyde concentration in the air, display screen 10 is used for information interaction.
In one embodiment, the formaldehyde purification device further comprises a color sensor 11, wherein the color sensor 11 is arranged in the potassium permanganate adsorption layer 81 and is used for detecting the color change of the potassium permanganate adsorption layer 81, and if the color of the potassium permanganate small ball is changed from purple to yellow, the color sensor 11 transmits a color change signal to the single chip microcomputer. The embodiment can also be provided with a reminding mechanism, such as an indicator light or a buzzer, and the reminding mechanism is controlled by the single chip microcomputer and sends out a filling material replacement reminding signal.
In one embodiment, the formaldehyde purification device further comprises a second detection sensor 12, the second detection sensor 12 is arranged between the air extractor 5 and the formaldehyde adsorption part and used for detecting the concentration of formaldehyde in the air in the initial state, the second detection sensor 12 adopts the same type of sensor as the first detection sensor 6 and transmits the detection information to the single chip microcomputer, and the adsorption effect of the formaldehyde adsorption part can be judged by comparing the detection data of the second detection sensor 12 with the detection data of the first detection sensor 6.
In one embodiment, the formaldehyde purification device further comprises a reflux part, and when the first detection sensor 6 detects that the concentration of formaldehyde in the air is higher than the national standard (GB50325-2010), in order to avoid discharging the air which does not reach the standard, the air enters the formaldehyde adsorption part again through the reflux part for re-adsorption. Specifically, the return portion includes a return duct 13 and a duplex solenoid valve 14, the duplex solenoid valve 14 is disposed between the first detection sensor 6 and the air outlet 3, one end of the return duct 13 communicates with the air flow duct 4 between the second detection sensor 12 and the formaldehyde adsorption portion, and the other end is connected to the duplex solenoid valve 14. When the first detection sensor 6 detects that the concentration of formaldehyde in the air is higher than the national standard, the single chip microcomputer controls the duplex electromagnetic valve 14 to conduct the formaldehyde adsorption part and the return pipeline 13, and the air enters the formaldehyde adsorption part again through the return pipeline 13 to circulate; when the first detection sensor 6 detects that the formaldehyde in the air reaches the standard, the double-solenoid valve 14 is controlled by the single chip microcomputer to conduct the formaldehyde adsorption part and the air outlet 3, and the air is discharged from the air outlet 3.
In one embodiment, in order to increase the contact time between the air and the formaldehyde absorbing layer 8, a spoiler 15 is further disposed in the absorption tower 7, the spoiler 15 is disposed in front of the formaldehyde absorbing layer 8, a plurality of circular holes are uniformly distributed on the spoiler 15, the circular holes are disposed in a plurality of numbers and are staggered at the front end of the absorption tower 7, in this embodiment, the absorption tower 7 is cylindrical, the spoiler 15 is disposed as a semicircular plate matching with the shape of the circular holes, and the preferred height of the spoiler 15 is 2/3 of the diameter of the spoiler. Air enters the formaldehyde adsorption layer 8 through the spoiler 15, so that the circulation speed of the air can be reduced, the contact area between the air and the formaldehyde adsorption layer 8 is increased, and the formaldehyde adsorption layer 8 can absorb formaldehyde in the air more fully.
In one embodiment, in order to facilitate the replacement of the packing, the adsorption tower 7 is configured to be composed of a first connection portion 16 and a second connection portion 17 which are detachably connected, the first connection portion 16 is used for arranging the spoiler 15, the second connection portion 17 is used for filling the formaldehyde adsorption layer 8, and a sealing strip 18 is connected between the first connection portion 16 and the second connection portion 17 to prevent air leakage. Further, the second connection portions 17 may also be provided in a state of being detachably connected to each other according to the number of the adsorption layers.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a formaldehyde purification device, its characterized in that, includes air inlet (2), gas outlet (3), communicate air extractor (5), formaldehyde adsorption portion and first detection sensor (6) in proper order through air flow pipeline (4) between air inlet (2) and gas outlet (3), formaldehyde adsorption portion include both ends communicate respectively air flow pipeline (4) adsorption tower (7) and pack in formaldehyde adsorbed layer (8) in adsorption tower (7), first detection sensor (6) are arranged in detecting the formaldehyde concentration in the air that flows out in formaldehyde adsorbed layer (8).
2. The formaldehyde purification device according to claim 1, wherein the formaldehyde adsorption layer (8) comprises a potassium permanganate adsorption layer (81) and an activated carbon adsorption layer (82).
3. The formaldehyde purification device according to claim 2, further comprising a color sensor (11), wherein the color sensor (11) is disposed in the potassium permanganate adsorbing layer (81).
4. The formaldehyde purification apparatus according to claim 1, further comprising a second detection sensor (12), wherein the second detection sensor (12) is disposed between the air extractor (5) and the formaldehyde adsorption portion, and is configured to detect a concentration of formaldehyde in the air in an initial state.
5. The formaldehyde purification device according to claim 1, further comprising a return portion, wherein the return portion comprises a return pipe (13) and a duplex solenoid valve (14), the duplex solenoid valve (14) is disposed between the first detection sensor (6) and the air outlet (3), one end of the return pipe (13) is communicated to the air flow pipe (4) between the second detection sensor (12) and the formaldehyde adsorption portion, and the other end is connected to the duplex solenoid valve (14).
6. The formaldehyde purification device according to any one of claims 1 to 5, further comprising a control system, wherein the control system comprises a single-chip microcomputer and a display screen (10) in communication with the single-chip microcomputer.
7. The formaldehyde purification device according to claim 1, further comprising a spoiler (15) disposed in the adsorption tower (7), wherein the spoiler (15) is disposed in front of the formaldehyde adsorption layer (8), and a plurality of through circular holes are uniformly distributed on the spoiler (15).
8. The formaldehyde purification device according to claim 7, wherein the adsorption tower (7) comprises a first connection part (16) and a second connection part (17) which are connected in sequence, the first connection part (16) is used for arranging a spoiler (15), the second connection part (17) is used for filling the formaldehyde adsorption layer (8), and the first connection part (16) and the second connection part (17) are detachably connected.
9. The formaldehyde purification device according to claim 8, wherein a sealing strip (18) is connected between the first connection portion (16) and the second connection portion (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210103657.5A CN114405244A (en) | 2022-01-28 | 2022-01-28 | Formaldehyde purification device |
| ZA2023/01130A ZA202301130B (en) | 2022-01-28 | 2023-01-27 | Formaldehyde purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210103657.5A CN114405244A (en) | 2022-01-28 | 2022-01-28 | Formaldehyde purification device |
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| Publication Number | Publication Date |
|---|---|
| CN114405244A true CN114405244A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210103657.5A Pending CN114405244A (en) | 2022-01-28 | 2022-01-28 | Formaldehyde purification device |
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| CN (1) | CN114405244A (en) |
| ZA (1) | ZA202301130B (en) |
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| CN112604408A (en) * | 2020-11-27 | 2021-04-06 | 盐城中创环保科技有限公司 | Exhaust gas purification system with self-checking device |
| CN214159107U (en) * | 2020-12-31 | 2021-09-10 | 江苏旭普环保装备有限公司 | Waste gas recovery is with environmental protection absorption tower that has honeycomb formula purification structure |
| CN215311446U (en) * | 2021-01-22 | 2021-12-28 | 四川艾克特斯生态科技有限责任公司 | Device for removing formaldehyde in air |
| CN215463105U (en) * | 2021-06-29 | 2022-01-11 | 千藤（南京）环保科技有限公司 | Air purification board with color change indication function |
| DE212021000152U1 (en) * | 2021-10-17 | 2021-11-26 | Nantong Duoqian New Material Science and Technology Co., Ltd. | Improved formaldehyde removal device |
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| ZA202301130B (en) | 2023-03-29 |
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