CN112717686A - Tail gas purification device of household kitchen garbage disposer and implementation method thereof - Google Patents
Tail gas purification device of household kitchen garbage disposer and implementation method thereof Download PDFInfo
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- CN112717686A CN112717686A CN202011545674.1A CN202011545674A CN112717686A CN 112717686 A CN112717686 A CN 112717686A CN 202011545674 A CN202011545674 A CN 202011545674A CN 112717686 A CN112717686 A CN 112717686A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B01D53/005—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 heat treatment
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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
- B01D53/007—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 irradiation
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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
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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
- B01D53/346—Controlling the process
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/91—Bacteria; Microorganisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0275—Other waste gases from food processing plants or kitchens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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Abstract
The invention discloses a tail gas purification device of a household kitchen garbage processor, which comprises a mounting plate, wherein a large pipe and a middle pipe are respectively connected to the mounting plate, the large pipe is positioned on one side of the middle pipe, the large pipe and the middle pipe are connected through an S-shaped bent pipe, photocatalyst silk floss is filled in the large pipe, a heating pipe is arranged in the middle pipe, a small pipe is arranged below the middle pipe, and activated carbon particles are filled in the small pipe; the invention also discloses an implementation method of the tail gas purification device of the household kitchen garbage disposer. The invention carries out triple filtration and purification on gas generated by kitchen garbage through ultraviolet sterilization, oxidation catalysis and absorption of the large pipe, the middle pipe and the small pipe, so that the discharged gas is cleaner, odorless and tasteless.
Description
Technical Field
The invention belongs to the technical field of gas purification of kitchen waste treatment machines, and particularly relates to a tail gas purification device of a household kitchen waste treatment machine and an implementation method thereof.
Background
The existing kitchen waste processor comprises a stirring barrel used for containing and processing kitchen waste, wherein a heating plate is attached to the outer side of the stirring barrel, microbial strains are put in the barrel, and the kitchen waste is fermented and decomposed in a microbial degradation mode. The swill produced by fermentation is heated and gasified, then sucked into the purification device by the blower, and discharged after multiple purification.
The kitchen waste machine which is used in the market at present is used for purifying gas, is discharged after being sterilized by using an ultraviolet lamp tube and catalyzed at normal temperature, does not treat the discharged acid gas, and can only be used outdoors.
The heating plate is also used for heating, sterilizing and disinfecting, and then is discharged after being catalyzed by activated carbon, the activated carbon needs to be replaced irregularly, and the later maintenance cost is higher.
Disclosure of Invention
The invention aims to provide a tail gas purification device of a household kitchen garbage processor, which aims to solve the problems in the background technology. The invention provides a tail gas purification device of a household kitchen garbage disposer, which has the characteristic of realizing the high-efficiency purification of the tail gas of the household kitchen garbage disposer.
The invention also aims to provide an implementation method of the tail gas purification device of the household kitchen garbage disposer.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a domestic kitchen garbage disposer tail gas cleanup unit, includes the mounting panel, is connected with main pipe and well pipe on the mounting panel respectively, and the main pipe is located one side of well pipe, is connected through S-shaped return bend between main pipe and the well pipe, and the inside of main pipe is filled with photocatalyst silk floss, and the inside of well pipe is equipped with the heating pipe, and the below of well pipe is equipped with the tubule, and the inside packing of tubule has the active carbon granule.
In the invention, the upper end and the lower end of the large pipe are respectively connected with a large pipe end cover.
Further, the first connecting pipe is connected above the end cover of the upper large pipe.
In the invention, the inner part of the large tube is also provided with an ultraviolet lamp tube.
In the invention, two ends of the S-shaped bent pipe are respectively connected with the large pipe and the middle pipe through sealing sleeves.
In the invention, the upper end of the middle pipe is connected with a middle pipe casting, the interior of the middle pipe casting is filled with alumina particles, the interior of the middle pipe is also filled with ozone catalyst, the upper end of the middle pipe casting and the lower end of the middle pipe are respectively connected with a middle pipe end cover, and the front surface of the middle pipe is connected with a side cover.
Furthermore, the upper end and the lower end of the small pipe are respectively connected with a small pipe end cover, and a second connecting pipe is connected below the small pipe end cover at the lower end.
In the invention, a temperature sensor is arranged at the middle lower part of the front surface of the small tube, and a temperature control switch electrically connected with the temperature sensor is arranged at one side of the small tube.
Further, the implementation method of the tail gas purification device of the household kitchen garbage processor comprises the following steps:
the first connecting pipe is connected with an exhaust pipe of the kitchen waste machine, and the second connecting pipe is connected with an air inlet end of the air blower;
secondly, gas generated by the kitchen garbage enters the interior of the large pipe under the action of the blower;
thirdly, an ultraviolet lamp tube in the large tube is used for sterilizing and disinfecting gas generated by kitchen waste, the ultraviolet lamp tube irradiates on photocatalyst silk floss, and generated ozone gas and ultraviolet rays are used for sterilizing and disinfecting malodorous gas with organic substances;
fourthly, the mixture enters the interior of the middle pipe and is subjected to high-temperature combustion catalysis under the heating coordination of an ozone catalyst in the middle pipe casting and a heating pipe, so that harmful gases are effectively decomposed and oxidized, and the harmful gases and malodorous gases are oxidized into harmless and tasteless gases;
fifthly, the mixture enters the inside of the small pipe, is further purified and filtered by the activated carbon particles inside the small pipe, is oxidized into carbon dioxide and water vapor, and is discharged from the second connecting pipe;
and (VI) heating and catalyzing through a heating pipe, so that the activated carbon particles and the ozone catalyst can be recycled.
In the invention, the upper end and the lower end of the large pipe are respectively connected with the large pipe end cover; a first connecting pipe is connected above the upper end large pipe end cover; the inside of the large tube is also provided with an ultraviolet lamp tube; two ends of the S-shaped bent pipe are respectively connected with the large pipe and the middle pipe through seal sleeves; the upper end of the middle pipe is connected with a middle pipe casting, the interior of the middle pipe casting is filled with alumina particles, the interior of the middle pipe is also filled with an ozone catalyst, the upper end of the middle pipe casting and the lower end of the middle pipe are respectively connected with a middle pipe end cover, and the front side of the middle pipe is connected with a side cover; the upper end and the lower end of the small pipe are respectively connected with a small pipe end cover, and a second connecting pipe is connected below the small pipe end cover at the lower end; the middle lower part of the front surface of the small pipe is provided with a temperature sensor, and one side of the small pipe is provided with a temperature control switch electrically connected with the temperature sensor.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention carries out triple filtration and purification on the gas generated by the kitchen garbage through ultraviolet sterilization, oxidation catalysis and absorption of the large pipe, the middle pipe and the small pipe, so that the discharged gas is cleaner, odorless and tasteless;
2. according to the invention, high-temperature combustion catalysis is carried out through the heating pipe, so that activated carbon particles and an ozone catalyst can be recycled, and the problems of later maintenance such as irregular replacement of activated carbon due to saturation and the like are avoided;
3. the invention is provided with a temperature sensor and a temperature control switch, and the temperature of the purification system is monitored in real time through the temperature sensor and the temperature control switch, and the secondary protection function is realized in an abnormal state;
4. the kitchen waste machine is simple in structure and reasonable in layout, the whole structure of the kitchen waste machine can be smaller, the occupied space is smaller, and the kitchen waste machine is better suitable for being used and popularized by users in middle and small suites of high floors.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
in the figure: 1. a first connecting pipe; 2. a large pipe; 21. a large pipe end cover; 3. mounting a plate; 4. an S-shaped bent pipe; 41. sealing sleeves; 5. a middle tube; 51. a side cover; 52. a middle pipe end cover; 53. a middle pipe casting; 54. heating a tube; 6. a small tube; 61. a small tube end cap; 7. a second connecting pipe; 8. an ultraviolet lamp tube.
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.
Example 1
Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a domestic kitchen garbage disposer tail gas cleanup unit, includes mounting panel 3, be connected with big pipe 2 and well pipe 5 on the mounting panel 3 respectively, big pipe 2 is located one side of well pipe 5, the upper and lower both ends of big pipe 2 are connected with big pipe end cover 21 respectively, be connected through S-shaped return bend 4 between big pipe 2 and the well pipe 5, the inside of big pipe 2 is filled with the photocatalyst silk floss, the inside of well pipe 5 is equipped with heating pipe 54, the below of well pipe 5 is equipped with tubule 6, the inside packing of tubule 6 has the active carbon granule.
Further, a first connecting pipe 1 is connected above the upper end large pipe end cover 21.
Through adopting above-mentioned technical scheme, be connected with the gas vent of surplus machine in kitchen through first connecting pipe 1.
Further, both ends of the S-shaped bent pipe 4 are connected to the large pipe 2 and the medium pipe 5, respectively, by seal sleeves 41.
Further, the upper end of the middle pipe 5 is connected with a middle pipe casting 53, the interior of the middle pipe casting 53 is filled with alumina particles, the interior of the middle pipe 5 is filled with ozone catalyst, the upper end of the middle pipe casting 53 and the lower end of the middle pipe 5 are respectively connected with a middle pipe end cover 52, and the front face of the middle pipe 5 is connected with a side cover 51.
By adopting the technical scheme, gas generated by kitchen garbage is purified and filtered by the ozone catalyst.
Furthermore, the upper and lower ends of the small tube 6 are respectively connected with a small tube end cover 61, and a second connecting tube 7 is connected below the lower end small tube end cover 61.
By adopting the technical scheme, the second connecting pipe 7 is connected with the air inlet end of the blower, and the air generated by the kitchen waste is sucked into the device through the blower.
Example 2
The present embodiment is different from embodiment 1 in that: furthermore, a temperature sensor is arranged at the middle lower part of the front surface of the small tube 6, and a temperature control switch electrically connected with the temperature sensor is arranged at one side of the small tube 6.
Through adopting above-mentioned technical scheme, monitor the clean system temperature in real time through temperature sensor and temperature detect switch and the secondary protection function when unusual state.
Example 3
The present embodiment is different from embodiment 1 in that: further, an ultraviolet lamp tube 8 is arranged inside the large tube 2.
By adopting the technical scheme, the gas generated by the kitchen garbage is sterilized and disinfected by the ultraviolet lamp tube 8.
Further, the implementation method of the tail gas purification device of the household kitchen garbage processor comprises the following steps:
the first connecting pipe 1 is connected with an exhaust pipe of the kitchen waste machine, and the second connecting pipe 7 is connected with an air inlet end of a blower;
secondly, gas generated by kitchen garbage under the action of microorganisms enters the interior of the large pipe 2 under the action of the blower, and the ultraviolet rays with specific wavelengths irradiate the photocatalyst medium and generate ozone for sterilization;
thirdly, the tail gas treated by the large pipe 2 enters the middle pipe 5 through the S-shaped bent pipe 4 for oxidation and catalysis, so that ozone oxidation is enhanced, and organic substances in the tail gas are oxidized and decomposed into gases such as carbon dioxide and the like;
fourthly, the residual tail gas from the middle pipe 5 enters the middle pipe casting 53, forms high-temperature combustion catalysis under the heating of the heating pipe 54, is oxidized into colorless and nontoxic carbon dioxide and water vapor under high temperature, and is purified and filtered under the matching of the aluminum oxide particles in the middle pipe 5 and the heating of the heating pipe 54;
fifthly, the mixture enters the small pipe 6 and is further adsorbed, purified and filtered by activated carbon particles (loaded with catalysts such as MnO2 and the like) in the small pipe 6, and produced harmless gases such as water vapor, carbon dioxide and oxygen are discharged from the second connecting pipe 7 through a blower;
and (VI) heating and catalyzing through a heating pipe 54, so that the activated carbon particles and the ozone catalyst can be recycled.
The ozone catalyst adopts the silicon-aluminum composite material as the carrier, and directly oxidizes the organic matters in the tail gas by utilizing the oxidizability of ozone, so that the organic matters are more easily degraded. The oxidation of ozone generated by large pipes has certain limitations on the mineralization process of organic matter. The ozone catalyst is added into the middle pipe, so that the capability of generating hydroxyl radicals of the ozone system and the capability of directly oxidizing organic matters by ozone can be obviously improved. Alumina particles are filled in the middle pipe casting, and the alumina particles are heated under the heating of the heating pipe to form combustion catalysis, on one hand, the alumina particles are used as an organic reaction catalyst to react with acid to generate aluminum salt and water; on the other hand, the water and organic substances in the tail gas can be adsorbed. The active carbon particles in the small tubes adopt a multi-metal co-impregnation technology (supported with catalysts such as MnO2 and the like), and have the functions of efficiently oxidizing and degrading residual organic substances and eliminating residual ozone at normal temperature.
In conclusion, the gas generated by the kitchen waste is subjected to triple filtration and purification through ultraviolet sterilization, oxidation catalysis and absorption of the large pipe 2, the middle pipe 5 and the small pipe 6, so that the discharged gas is cleaner, odorless and tasteless; according to the invention, high-temperature combustion catalysis is carried out through the heating pipe 54, so that activated carbon particles and an ozone catalyst can be recycled, and the problems of later maintenance such as irregular replacement of activated carbon due to saturation and the like are avoided; the invention is provided with a temperature sensor and a temperature control switch, and the temperature of the purification system is monitored in real time through the temperature sensor and the temperature control switch, and the secondary protection function is realized in an abnormal state; the kitchen waste machine is simple in structure and reasonable in layout, the whole structure of the kitchen waste machine can be smaller, the occupied space is smaller, and the kitchen waste machine is better suitable for being used and popularized by users in middle and small suites of high floors.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a domestic kitchen garbage disposer tail gas cleanup unit, includes mounting panel (3), its characterized in that: be connected with main pipe (2) and well pipe (5) on mounting panel (3) respectively, main pipe (2) are located one side of well pipe (5), are connected through S-shaped return bend (4) between main pipe (2) and well pipe (5), and the inside of main pipe (2) is filled with photocatalyst silk floss, and the inside of well pipe (5) is equipped with heating pipe (54), and the below of well pipe (5) is equipped with tubule (6), and the inside packing of tubule (6) has the active carbon granule.
2. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: the upper end and the lower end of the large pipe (2) are respectively connected with a large pipe end cover (21).
3. The tail gas purification device of the household kitchen waste processor as claimed in claim 2, characterized in that: a first connecting pipe (1) is connected above the upper end large pipe end cover (21).
4. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: an ultraviolet lamp tube (8) is also arranged inside the large tube (2).
5. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: two ends of the S-shaped bent pipe (4) are respectively connected with the large pipe (2) and the middle pipe (5) through a sealing sleeve (41).
6. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: the upper end of the middle pipe (5) is connected with a middle pipe casting (53), the interior of the middle pipe casting (53) is filled with alumina particles, the interior of the middle pipe (5) is filled with ozone catalyst, the upper end of the middle pipe casting (53) and the lower end of the middle pipe (5) are respectively connected with a middle pipe end cover (52), and the front face of the middle pipe (5) is connected with a side cover (51).
7. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: the upper end and the lower end of the small pipe (6) are respectively connected with a small pipe end cover (61), and a second connecting pipe (7) is connected below the lower end small pipe end cover (61).
8. The tail gas purification device of the household kitchen waste processor as claimed in claim 1, wherein: a temperature sensor is arranged at the middle lower part of the front surface of the small pipe (6), and a temperature control switch electrically connected with the temperature sensor is arranged at one side of the small pipe (6).
9. The method for implementing an exhaust gas purification device of a household kitchen waste processor as claimed in any one of claims 1 to 8, comprising the steps of:
the first connecting pipe (1) is connected with an exhaust pipe of the kitchen waste machine, and the second connecting pipe (7) is connected with an air inlet end of a blower;
secondly, gas generated by the kitchen garbage enters the interior of the large pipe (2) under the action of the blower;
thirdly, an ultraviolet lamp tube (8) in the large tube (2) sterilizes and disinfects gas generated by kitchen waste, the ultraviolet lamp tube (8) irradiates on photocatalyst silk floss, and generated ozone gas and ultraviolet rays sterilize and disinfect malodorous gas with organic substances;
fourthly, the gas enters the interior of the middle pipe (5) and is subjected to high-temperature combustion catalysis under the heating coordination of an ozone catalyst in the middle pipe casting (53) and a heating pipe (54), so that harmful gas is effectively decomposed and oxidized, and the harmful gas and the malodorous gas are oxidized into harmless and tasteless gas;
fifthly, the mixture enters the small pipe (6), is further purified and filtered by active carbon particles in the small pipe (6) to be oxidized into carbon dioxide and water vapor, and is discharged from the second connecting pipe (7);
and (VI) heating and catalyzing through a heating pipe (54) to ensure that the activated carbon particles and the ozone catalyst can be recycled.
10. The method for realizing the tail gas purification device of the household kitchen garbage processor as claimed in claim 9, is characterized in that: the upper end and the lower end of the large pipe (2) are respectively connected with a large pipe end cover (21); a first connecting pipe (1) is connected above the upper end large pipe end cover (21); an ultraviolet lamp tube (8) is also arranged inside the large tube (2); two ends of the S-shaped bent pipe (4) are respectively connected with the large pipe (2) and the middle pipe (5) through a sealing sleeve (41); the upper end of the middle pipe (5) is connected with a middle pipe casting (53), the interior of the middle pipe casting (53) is filled with alumina particles, the interior of the middle pipe (5) is filled with ozone catalyst, the upper end of the middle pipe casting (53) and the lower end of the middle pipe (5) are respectively connected with a middle pipe end cover (52), and the front surface of the middle pipe (5) is connected with a side cover (51); the upper end and the lower end of the small pipe (6) are respectively connected with a small pipe end cover (61), and a second connecting pipe (7) is connected below the lower end small pipe end cover (61); a temperature sensor is arranged at the middle lower part of the front surface of the small pipe (6), and a temperature control switch electrically connected with the temperature sensor is arranged at one side of the small pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011545674.1A CN112717686A (en) | 2020-12-24 | 2020-12-24 | Tail gas purification device of household kitchen garbage disposer and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011545674.1A CN112717686A (en) | 2020-12-24 | 2020-12-24 | Tail gas purification device of household kitchen garbage disposer and implementation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719953A (en) * | 2021-10-08 | 2021-11-30 | 杭州科技职业技术学院 | Dehumidification and photo-thermal catalysis synergistic air purification system |
| CN113769579A (en) * | 2021-10-08 | 2021-12-10 | 浙江科技学院 | Photo-thermal composite catalytic air purification system |
-
2020
- 2020-12-24 CN CN202011545674.1A patent/CN112717686A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719953A (en) * | 2021-10-08 | 2021-11-30 | 杭州科技职业技术学院 | Dehumidification and photo-thermal catalysis synergistic air purification system |
| CN113769579A (en) * | 2021-10-08 | 2021-12-10 | 浙江科技学院 | Photo-thermal composite catalytic air purification system |
| CN113719953B (en) * | 2021-10-08 | 2023-02-10 | 杭州科技职业技术学院 | Dehumidification and photo-thermal catalysis synergistic air purification system |
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