CN112484217A - Someone space inner loop ozone disinfection purifier - Google Patents

Someone space inner loop ozone disinfection purifier Download PDF

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Publication number
CN112484217A
CN112484217A CN202011267692.8A CN202011267692A CN112484217A CN 112484217 A CN112484217 A CN 112484217A CN 202011267692 A CN202011267692 A CN 202011267692A CN 112484217 A CN112484217 A CN 112484217A
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ozone
disinfection
catalyst
ventilation pipeline
porous
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周元全
涂晓波
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Wuhan Weimeng Environmental Technology Co ltd
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Wuhan Weimeng Environmental Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/32—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of manganese, technetium or rhenium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The invention belongs to the technical field of disinfection and purification, and relates to a manned space internal circulation ozone disinfection and purification device. The device comprises a ventilation pipeline, an electrolytic ozone generating device and a gas inlet pipe, wherein an internal circulating fan is arranged on the upper layer of the ventilation pipeline, a porous catalyst layer is arranged in the middle of the ventilation pipeline, and a porous gas distributor is arranged on the lower layer of the ventilation pipeline; the catalyst of the porous catalyst layer is formed by bonding and sintering multi-component metal oxides through polytetrafluoroethylene. The multi-component metal oxide is a mixed oxide consisting of manganese dioxide, ferric oxide, cobaltosic oxide and nickel oxide. The catalyst of the present invention has strong ability to decompose ozone. The ozone at the air outlet of the ventilation pipeline is ensured to be below the safety limit, thereby realizing the purpose of space disinfection and purification under the condition of people.

Description

Someone space inner loop ozone disinfection purifier
Technical Field
The invention belongs to the technical field of disinfection and purification, and relates to a manned space internal circulation ozone disinfection and purification device.
Background
The air purifier widely applied to the market at present has the main functions of physical separation, dust particle adsorption and filtration and has no disinfection function.
Ozone has extremely strong oxidizing power and sterilizing power. But because the concentration of ozone in air involves a safety margin, it is more harmful to human body. The existing ozone disinfection and purification of air is carried out in an unmanned space, namely, a certain amount of ozone is firstly introduced and is kept for a certain time, then the ozone supply is stopped, and then the window opening ventilation is carried out, so that the residual ozone in the disinfection space is reduced to the national control standard (0.16 mg/m)3) Then, the personnel can enter the disinfection space, and the use is not very convenient. Public toilets like railway stations, airports take 24 hours to use. In addition, the process can cause secondary pollution when external air enters when the door and the window are opened after disinfection. In the ozone disinfection process, if a high-frequency high-voltage corona discharge method is adopted, ozone is generated, and Nitrogen Oxide (NO) harmful to the environment and human bodies is also generatedX) Carcinogenic substances. The NO isXBelongs to a substance without half-life period, and the concentration of the substance accumulated in a disinfection space greatly exceeds the national standard (0.1 mg/m)3) Causing secondary pollution.
The air is also disinfected by the synergistic action of ozone and ultraviolet light, and the disinfection can be only carried out in an unmanned space due to the radiation of the ultraviolet light.
Disclosure of Invention
Due to the defects of the disinfection and purification technology, the invention aims to provide the manned space internal circulation ozone disinfection and purification device, so that the disinfection and purification technology can be applied under manned conditions and has no secondary pollution.
The technical scheme adopted by the invention is as follows:
the space internally circulating ozone disinfection and purification device comprises a ventilation pipeline, wherein an internal circulating fan is arranged on the upper layer of the ventilation pipeline, a porous catalyst layer is arranged in the middle of the ventilation pipeline, and a porous gas distributor is arranged on the lower layer of the ventilation pipeline;
the catalyst of the porous catalyst layer is formed by bonding and sintering multi-component metal oxides through polytetrafluoroethylene.
The multi-component metal oxide is a mixed oxide consisting of manganese dioxide, ferric oxide, cobaltosic oxide and nickel oxide. PTFE (polytetrafluoroethylene) is used as a bonding agent, so that the metal oxide is in a half-wrapped state, and after forming, the catalyst has dual functions of catalysis and water resistance, can normally work in a humid environment, and improves the long-term stability of the catalyst.
The catalyst comprises the following components in percentage by weight: 60 to 80% MnO2、1～10％Fe2O3、1～10％Co3O41-10% of NiO and 1-10% of PTFE. The optimized formula is 80 percent MnO2、5％Fe2O3、3％Co3O4、7％NiO、5％PTFE。
The ozone used by the ozone disinfection and purification device with the internal circulation of the space with people adopts high-concentration high-purity (20-25%) ozone generated by a water electrolysis method and is free of Nitrogen Oxide (NO)X) Secondary pollution.
The invention relates to an ozone disinfection and purification device circulating in the occupied space, which uses a high-efficiency catalyst and is formed by bonding and sintering multi-component metal oxides by a polytetrafluoroethylene adhesive.
The multiple metal oxides are mixed oxides composed of manganese dioxide, ferric oxide, cobaltosic oxide and nickel oxide. The metal oxides are all variable valence metal oxides, so that the catalyst provided by the invention has strong ozone decomposition capability. The ozone at the air outlet of the ventilation pipeline is ensured to be below the safety limit, thereby realizing the purpose of space disinfection and purification under the condition of people.
The inner circulation fan adopts a horizontal fan, and the fan can force odor, TVOC, bacteria virus and high-concentration ozone generated by the water electrolysis type ozone generating device in the disinfection and purification space to pass through the porous catalyst layer. The ozone can rapidly generate high oxidation active radical, atomic oxygen and hydroxyl radical on the surface of the catalyst, thereby immediately deodorizing, degrading TVOC and killing bacteria and viruses.
The porous gas distributor adopts a porous structure, so that ozone and air are fully mixed when passing through.
The invention relates to an internal circulation ozone disinfection and purification device for a manned space, which also comprises a controller for controlling the opening of an electrolytic ozone generating device and an internal circulation fan. The controller adopts a simple single chip microcomputer or a PLC, which are both in the prior art and are not described in detail herein.
The components of the device can be integrated together, and the device is hung on a wall like an indoor air conditioner, and is small and attractive.
According to the size of the disinfection and purification space O3The yield can be selected to run in a starting-up and shutdown discontinuous running mode, so that the odor, volatile organic compounds and bacteria in the purification space are reduced to the sanitary standard. Meanwhile, the residual ozone amount can be maintained at 0.1-0.16 mg/m3Wide application range and no secondary pollution.
The disinfection, purification and deodorization action mechanism and the reaction principle of the invention are as follows:
ozone + catalyst surface active site [. about.M ]]Synergistic effect to generate high-oxidation activity radical [ O M]、[O2*M]Atomic oxygen [ O ]]And hydroxyl radical [ HO M]。
The action mechanism is as follows:
active site of ozone on catalyst surface]Quickly converted into active atomic oxygen [ O ] under the action of]And oxygen O2Active atomic oxygen [ O ]]And active sites [. about.M ] on the surface of the catalyst]Combined to form multiple high-oxidation active radicals [ O M]、[O2*M]、[HO*M]. Volatile Organic Compounds (TVOC) are mineralized under the action of high oxidation activity groups to generate carbon dioxide and water.
TVOC+[O*M]+[O2*M]+[HO*M]→CO2+H2O
The reaction principle is as follows:
and (3) deodorization: h2S+3[O]→H2SO4
2NH3+3[O]→N2+3H2O
Total Volatile Organic (TVOC) degradation:
TVOC+n[O]→CO2+H2O
and (3) sterilization: under the action of the high-oxidation active groups, the metabolic process of the bacterial microorganisms is destroyed and the bacterial microorganisms die.
The invention has the beneficial effects that the ozone is used to realize the decomposition of odor and organic matters and the killing of bacteria. Meanwhile, due to the existence of the high-efficiency catalyst at the downstream of the ozone, the decomposition of the ozone is ensured, and the aim of sterilizing and purifying the air in the space with people is fulfilled.
Drawings
FIG. 1 is a block diagram of a process flow of circulating ozone disinfection and purification in a space with people.
Fig. 2 is a schematic structural diagram of a device for disinfecting and purifying ozone circulating in a space with people.
The device comprises a disinfection and purification space, an internal circulation fan, a porous catalyst layer, a porous gas distributor, a controller, an electrolytic ozone generator, a ventilating duct and an ozone outlet duct, wherein the disinfection and purification space comprises 1 part, 2 part of the internal circulation fan, 3 part of the porous catalyst layer, 4 part of the porous gas distributor, 5 part of the controller, 6 part of the electrolytic ozone generator, 7 part of the ventilating duct and 8 part of.
Detailed Description
The following will further explain the device for sterilizing and purifying ozone circulating in the occupied space according to the present invention with reference to fig. 2.
A manned space internal circulation ozone disinfection and purification device comprises a ventilation pipeline 7, wherein an internal circulation fan 2 is arranged on the upper layer of the ventilation pipeline 7, a porous catalyst layer 3 is arranged in the middle of the ventilation pipeline, a porous gas distributor 4 is arranged on the lower layer of the ventilation pipeline, the device also comprises an electrolytic ozone generating device 6, and an ozone outlet pipe 8 of the electrolytic ozone generating device 6 is communicated with a gas inlet below the porous gas distributor 4;
the catalyst of the porous catalyst layer 3 is formed by bonding and sintering multi-component metal oxide through polytetrafluoroethylene.
The multi-component metal oxide is a mixed oxide consisting of manganese dioxide, ferric oxide, cobaltosic oxide and nickel oxide.
The controller 5 presets the periodic operation time and the power-off time and automatically turns off the electrolytic ozone according to the disinfection and purification space volume, the indoor pollution degree and the ozone production amount of the electrolytic ozone generatorA generating device and an internal circulation fan. After the electrolytic ozone generating device 6 and the internal circulation fan 2 are started simultaneously, O3And bacteria, viruses, odor and TVOC quickly pass through the gas distributor 4 and the porous catalyst layer 3 under the action of the suction force of the internal circulation fan 2, and high-oxidation-activity radicals [ O M ] are quickly formed on the catalytic activity sites on the surface of the porous catalyst layer 3]、[O2*M]、[HO*M]And active atomic oxygen [ O ]]Under the action of the catalyst, bacteria and viruses are quickly killed, odor is removed, and TVOC is degraded into CO2And H2And O. According to the control of a controller, the periodic internal circulation operation is carried out, the strong oxidation function of ozone and catalyst is utilized, and the residual ozone is less than 0.16mg/m after disinfection, purification and sterilization by an internal circulation process method3And reaches the relevant national sanitary standard.
Example one, at 100M3In the space (public toilet) with people, electrolytic O is adopted3The output of the generator is 500mg/h, the controller selects a working mode of 1.5h operation and 15min intermittent power off, the bacterial inactivation rate reaches 99.9 percent, the TVOC degradation rate is more than 90 percent, and the residual ozone concentration in the space in the operation time period is always less than 0.16mg/m3，And meets the national sanitary standard.
The embodiment 1 of the invention is the field application in public toilets, and the effects of sterilization, TVOC degradation, deodorization and sterilization are shown in tables 1, 2 and 3.
TABLE 1 Sterilization Effect
Figure BDA0002776707750000061
TABLE 2 TVOC degradation Effect
Figure BDA0002776707750000062
TABLE 3 deodorizing and sterilizing Effect
Figure BDA0002776707750000063
Figure BDA0002776707750000071
Example two, at 30M3In a space (office) with people, adopting electrolytic O3The output of the generator is 2.8g/h, the generator continuously works for 120 minutes, the killing rate of the white staphylococcus reaches 99.99 percent, and the residual ozone concentration in the space in the operation time period is always less than 0.16mg/m3，The product meets the national sanitary standard; in addition, 150M3In the space (classroom) with people, electrolytic O is adopted3The output of the generator is 2.8g/h, the generator continuously works for 120 minutes, the air natural bacteria extinction rate reaches over 96 percent, and the space residual ozone concentration in the operation time period is always less than 0.16mg/m3，And meets the national sanitary standard.
The second example is the field application in offices and classrooms, and the sterilization effect is shown in tables 4 and 5.
TABLE 4 air Disinfection Effect identification test data (30 m)3Experiment storehouse)
Figure BDA0002776707750000072
TABLE 5 air Disinfection Effect identification test (air Natural bacteria) Experimental data (150 m)3Classroom)
Figure BDA0002776707750000073

Claims (7)

1. The space internally circulating ozone disinfection and purification device with people is characterized by comprising a ventilation pipeline, an internal circulating fan is arranged on the upper layer of the ventilation pipeline, a porous catalyst layer is arranged in the middle of the ventilation pipeline, a porous gas distributor is arranged on the lower layer of the ventilation pipeline, and the device also comprises an electrolytic ozone generating device, wherein an ozone outlet pipe of the electrolytic ozone generating device is communicated with a gas inlet below the porous gas distributor;
the catalyst of the porous catalyst layer is formed by bonding and sintering multi-component metal oxides through polytetrafluoroethylene, wherein the multi-component metal oxides are mixed oxides consisting of manganese dioxide, ferric oxide, cobaltosic oxide and nickel oxide.
2. The indoor circulating ozone disinfection and purification device with the catalyst as claimed in claim 1, wherein the catalyst comprises the following components by weight: 60 to 80% MnO2、1~10%Fe2O3、1~10%Co3O4、1~10%NiO、1~10%PTFE。
3. The indoor circulating ozone disinfection and purification device with the catalyst as claimed in claim 2, wherein the catalyst comprises the following components by weight: 80% MnO2、5%Fe2O3、3%Co3O4、7%NiO、5%PTFE。
4. The manned space internal circulation ozone disinfection and purification device according to claim 1, wherein the internal circulation fan is a horizontal fan.
5. The personal space disinfection and purification apparatus utilizing circulating ozone as claimed in claim 1, wherein said porous gas distributor is of a porous structure.
6. The manned space circulating ozone disinfection and purification apparatus of claim 1, further comprising a controller.
7. The indoor circulating ozone disinfection and purification device with the air as claimed in claim 6, wherein the controller is a single chip microcomputer or a PLC.
CN202011267692.8A 2020-11-13 2020-11-13 Someone space inner loop ozone disinfection purifier Pending CN112484217A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367574A2 (en) * 1988-10-31 1990-05-09 Sakai Chemical Industry Co., Ltd., Ozone decomposition catalyst and method
CN2187950Y (en) * 1993-02-10 1995-01-25 成都蓉高新技术研究院化机电研究所 Catalitic cleaning type ozone disinfection and deodorisation device
CN1559938A (en) * 2004-03-03 2005-01-05 哈尔滨工业大学 Process for water supply deep treatment of catalyzing ozone oxydation by hydroxy ferric oxide as catalyst
CN1872414A (en) * 2006-05-18 2006-12-06 武汉大学 Reduced catalyst of mono fluorin, and preparation method and usage
CN1917950A (en) * 2003-12-16 2007-02-21 开利公司 Bifunctional layered photocatalyst/thermocatalyst for improving indoor air quality
CN101771152A (en) * 2010-01-12 2010-07-07 武汉理工大学 Rare earth metal oxide catalyst and preparation method thereof
CN110743527A (en) * 2019-11-08 2020-02-04 南京工业大学 Preparation method of mesoporous ozone catalyst

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367574A2 (en) * 1988-10-31 1990-05-09 Sakai Chemical Industry Co., Ltd., Ozone decomposition catalyst and method
CN2187950Y (en) * 1993-02-10 1995-01-25 成都蓉高新技术研究院化机电研究所 Catalitic cleaning type ozone disinfection and deodorisation device
CN1917950A (en) * 2003-12-16 2007-02-21 开利公司 Bifunctional layered photocatalyst/thermocatalyst for improving indoor air quality
CN1559938A (en) * 2004-03-03 2005-01-05 哈尔滨工业大学 Process for water supply deep treatment of catalyzing ozone oxydation by hydroxy ferric oxide as catalyst
CN1872414A (en) * 2006-05-18 2006-12-06 武汉大学 Reduced catalyst of mono fluorin, and preparation method and usage
CN101771152A (en) * 2010-01-12 2010-07-07 武汉理工大学 Rare earth metal oxide catalyst and preparation method thereof
CN110743527A (en) * 2019-11-08 2020-02-04 南京工业大学 Preparation method of mesoporous ozone catalyst

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
曹建亮: "《一氧化碳低温催化氧化用氧化铜基纳米催化材料》", 31 August 2017 *

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Application publication date: 20210312