CN216878737U

CN216878737U - Photo-oxygen ion waste gas treatment machine

Info

Publication number: CN216878737U
Application number: CN202220176632.3U
Authority: CN
Inventors: 周彦; 康生; 孙金峰
Original assignee: Huaxia Fukang Environmental Technology Co ltd
Current assignee: Huaxia Fukang Environmental Technology Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-05
Anticipated expiration: 2032-01-21

Abstract

A photo-oxygen ion waste gas processor comprises an air inlet pipe, a processing module and an air outlet pipe; one end of the air inlet pipe is connected with the waste gas exhaust outlet, the other end of the air inlet pipe is connected with the inlet of the processing module, and the air outlet pipe is connected with the outlet of the processing module; the processing module comprises an electrodeless lamp, a nano semiconductor photocatalysis machine and an ozone removing and catalyzing module, and the electrodeless lamp, the nano semiconductor photocatalysis machine and the ozone removing and catalyzing module are sequentially connected. The utility model aims to develop a high-efficiency low-resistance light hydrogen ion air processor which can purify waste gas discharged from laboratories, animal feeding houses, fermentation workshops and the like and has multiple effects of dust removal, sterilization and deodorization.

Description

Light oxygen ion exhaust-gas treatment machine

Technical Field

The utility model belongs to the technical field of waste gas treatment devices, and particularly relates to a photo-oxygen ion waste gas treatment machine.

Background

The multi-component, high-concentration and high-harm waste gas generated by facilities such as pharmaceutical workshops, laboratory animal rooms and biochemical and physical laboratories mainly comprises micromolecular air pollutants such as TVOCs, malodorous gas, hydrogen sulfide and ammonia, and biological pollutants such as bacteria and viruses, so that the places and the surrounding air are polluted, and the health of operators, surrounding residents and animals is influenced. The current processing techniques and their limitations are analyzed as follows:

1 catalytic combustion process

The combustion temperature of the combustion chamber is kept by adopting a gas or electric heating mode, noble metals such as platinum, palladium and ruthenium are used as catalysts, pollutants in the consumed waste gas are decomposed by combustion, and almost all TVOCs, malodorous gases and pathogenic microorganisms can be treated. However, the catalytic combustion method requires a complicated reactor to be built on the ground, requires a specially-assigned person to take charge of operation and maintenance, uses expensive noble metal catalyst which is easy to inactivate when processing high-concentration organic matters, and consumes a large amount of energy during operation, so that the construction, operation and maintenance costs are high. In addition, although the low temperature combustion technology currently employed can reduce emissions, it still emits large amounts of carbon dioxide greenhouse gases and small amounts of nitrogen oxides.

2 adsorption method

The waste gas is treated by using a substance with adsorption capacity, such as activated carbon, zeolite molecular sieve and other materials, to concentrate pollutant components in the waste gas on the surface of the adsorbent so as to separate the pollutant components from the air. The adsorbent can be regenerated and recycled, and can be reused after organic pollutants are desorbed by means of calcination and the like. The adsorption method has wide treatment range and is particularly suitable for large-flow and low-concentration gas-phase pollutants. However, the adsorption method is easy to saturate when treating high-concentration TVOCs, the adsorbent regeneration consumes manpower and energy, and the adsorbent cannot be reactivated after being regenerated for many times to form solid pollutants, thereby causing more serious secondary pollution. In addition, the particulate matters in the exhaust gas can block the pores on the surface of the adsorbent to inactivate the adsorbent, small-molecule pollutants can still pass through the filter material and are not adsorbed, and microorganisms can proliferate on the adsorbent after being adsorbed, and even reversely propagate into a facility. Meanwhile, the air resistance of the activated carbon adsorption method is large, and high requirements are put forward on the pressure of an exhaust unit.

3 absorption method

Absorption methods have two physical and chemical modes. The physical absorption is to dissolve harmful components in the waste gas by the absorbent through a washing device, and then to analyze the difference of the physical properties of the organic molecules and the absorbent; the physical absorption method has low absorption rate and poor removing effect on insoluble or indissolvable gas phase pollutants, and is not suitable for occasions with large gas amount and high purification requirement. The chemical absorption is a process of separating harmful components in the waste gas through chemical reaction between pollutants in the waste gas and active components in the adsorbent; the chemical absorption method has greatly improved absorption rate but poor treatment effect on organic matters, and is generally used for treating inorganic waste gas such as desulfurization. In addition, the absorption method has high requirements on construction site conditions, and the washing solution or the reaction solution needs to be replaced regularly, so that the construction and operation cost is high. In addition, when the chemical washing device is installed in the northern region, the washing liquid and the liquid inlet and outlet pipelines are easy to freeze and crack in winter, so that the equipment cannot normally run, the equipment box body, the water inlet pipe and the water outlet pipe are generally required to be electrically assisted and heated for heat preservation, the heat preservation cost is extremely high, the electric power is larger when the electric auxiliary heating is started, and the running cost is extremely high.

4 microbial oxidation process

The method is to transfer the pollutants from a gas phase to a liquid phase, and decompose and convert organic matters into biomass and inorganic matters through the metabolism of microorganisms in the liquid. The microbial oxidation method has low investment and operation cost and no secondary pollution, and is suitable for treating low-concentration and easily biodegradable organic matters. But the microbial degradation rate is low, specific living conditions are required, and the adaptability to climate change is poor, so that the popularization and the application are limited.

5 photocatalytic method

The photocatalytic treatment technology is characterized in that the TiO2 catalyst is irradiated by ultraviolet rays with specific wavelengths to generate active oxygen ions with strong oxidation effect, so that H-C and H-S of organic molecules are broken, and the effects of sterilizing and degrading TVOCs are achieved. The photocatalysis technology has simple structure and low investment and operation cost, and is the development direction of waste gas treatment. However, the current photocatalytic technology is not as high as 20-40% in catalytic efficiency, and generates a large amount of ozone to form a new pollution source, so that the current photocatalytic technology is not a mainstream air purification technology.

6 low-temperature plasma technology

The low-temperature plasma is a conceptual air purification technology, and utilizes the active groups of electrons, ions, free radicals and the like generated by a gas medium in the discharge process to oxidize and decompose pollutants in the waste gas, thereby achieving the purpose of purifying the waste gas. The low-temperature plasma has wide application range, theoretically has effects on all malodorous gases, but at present, sufficient evidence for the purification efficiency and reliability of the malodorous gases is lacked, and high-voltage discharge has potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photo-oxygen ion waste gas processor to solve the problems.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a photo-oxygen ion waste gas processor comprises an air inlet pipe, a processing module and an air outlet pipe; one end of the air inlet pipe is connected with the waste gas exhaust outlet, the other end of the air inlet pipe is connected with the inlet of the processing module, and the air outlet pipe is connected with the outlet of the processing module;

the processing module comprises an electrodeless lamp, a nano semiconductor photocatalysis machine and an ozone removing and catalyzing module, and the electrodeless lamp, the nano semiconductor photocatalysis machine and the ozone removing and catalyzing module are sequentially connected.

Furthermore, the processing module also comprises a first processing pipeline and a second processing pipeline; the first processing pipeline is hermetically connected with the second processing pipeline; the electrodeless lamp and the nano semiconductor photocatalysis machine are arranged in the first processing pipeline, and the ozone removing and catalyzing module is arranged in the second processing pipeline.

Furthermore, the junction of the first processing pipeline and the second processing pipeline is a divergent section.

Further, the electrodeless lamp is an electrodeless lamp for generating 180nm electrodeless microwave, and the electrodeless lamp is annularly arranged in the first processing pipeline.

Further, the nano semiconductor photocatalyst comprises a plurality of vacuum ultraviolet lamps and a MnOx-TiO2 catalyst, and the plurality of vacuum ultraviolet lamps irradiate the MnOx-TiO2 catalyst.

Further, the ozone removing and catalyzing module is a filter screen coated with an ozone decomposition catalyst.

Further, the filter mesh coated with the ozone decomposition catalyst is arranged in a pocket shape.

Furthermore, a wind pressure sensor is arranged on the air inlet pipe, and an exhaust gas concentration sensor is arranged on the air outlet pipe.

Furthermore, a control module is further arranged on the processing module, and the wind pressure sensor and the waste gas concentration sensor are both connected to the control module and used for controlling the start and stop of the processor.

Further, the control module is a DDC control system.

Compared with the prior art, the utility model has the following technical effects:

the utility model is composed of a wind pressure sensor, an electrodeless lamp, a nano semiconductor photocatalysis system, an ozone removing and catalyzing module, an exhaust gas concentration sensor and an intelligent control module. The system is butted with the tail ends of exhaust ports of facilities such as a pharmaceutical workshop, an experimental animal room, a biochemical laboratory and the like, waste gas is led into the system and then passes through the wind pressure sensor, an electric signal is generated and transmitted to the integrated control system, and after the system receives a pressure signal, the whole photo-hydrogen ion waste gas treatment machine can be automatically started. The titanium dioxide catalytic plate irradiated by the electrodeless lamp can generate a large amount of hydroxyl free radicals OH and superoxide ion free radicals O2-, has strong oxidizing capability, generates active oxygen components by the ionization principle, removes microorganisms in waste gas through the strong oxidizing characteristic, carries out oxidative decomposition on TVOC and odor molecules, and then enters the nano semiconductor photocatalysis system along with the waste gas, thereby greatly improving the purification efficiency of the nano semiconductor photocatalysis. The nano semiconductor photocatalysis system can generate ozone during operation, the ozone enters the clip-shaped ozone removal catalysis module to decompose the ozone generated by the nano semiconductor photocatalysis system, and meanwhile, the module adopts a unique clip-shaped structural design, so that the filtering speed of the module is greatly increased. We install exhaust gas concentration sensor at the air outlet of equipment, exhaust gas concentrations such as on-line measuring ammonia, hydrogen sulfide, TVOC, detect data can feed back intelligent control module, can control nanometer semiconductor photocatalysis's photocatalysis fluorescent tube quantity according to the concentration of discharging size to the electric power energy consumption of the whole equipment of more accurate control, when the lower time quantum of laboratory exhaust emission, can avoid the equipment fluorescent tube to open entirely and the energy that leads to is extravagant.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Wherein:

1. a wind pressure sensor; 2. an electrodeless lamp; 3. a nano semiconductor photocatalyst; 4. an ozone removal catalysis module; 5. an exhaust gas concentration sensor; 6. a control module; 11. an air inlet pipe; 12. a first process conduit; 13. a second process conduit; 14. and an air outlet pipe.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1, the high-efficiency low-resistance light oxygen ion exhaust gas treatment machine is composed of 6 parts, such as a wind pressure sensor 1, an electrodeless lamp 2, a nano semiconductor photocatalytic system 3, an ozone removal catalytic module 4, an exhaust gas concentration sensor 5, an intelligent control module 6 and the like. The system is butted with the tail ends of exhaust ports of facilities such as a pharmaceutical workshop, an experimental animal room, a biochemical laboratory and the like, waste gas is led into the system and then passes through the wind pressure sensor 1, an electric signal is generated and transmitted to the integrated control system 6, and after the system receives a pressure signal, the whole light hydrogen ion waste gas treatment machine can be automatically started. The electrodeless lamp 2 can generate a large amount of hydroxyl free radicals OH and superoxide ion free radicals O2-when irradiating the titanium dioxide catalytic plate, the electrodeless lamp has strong oxidizing capability, active oxygen components are generated by an ionization principle, microorganisms in waste gas are removed by the strong oxidizing characteristic of the active oxygen components, TVOC and odor molecules are subjected to oxidative decomposition, and then the TVOC and the odor molecules enter the nano semiconductor photocatalysis system 3 along with the waste gas, so that the purification efficiency of nano semiconductor photocatalysis is greatly improved. Sodium (A)The rice semiconductor photocatalytic system can generate ozone during operation, and according to the relevant requirements of environmental air quality standard GB3095-2012, the concentration of the ozone around the discharge port of the equipment must be less than or equal to 200 mug/m³Therefore, a rectangular ozone removing and catalyzing module 4 is designed at the rear end of the equipment to decompose the ozone generated by the nano semiconductor photocatalysis system, so that the concentration of the ozone in the treated waste gas is less than or equal to 160 mu g/m³Meanwhile, the module adopts a unique square-shaped structural design, so that the wind filtering speed of the module is greatly increased, generally the wind filtering speed is less than or equal to 0.3m/s, and the wind resistance is less than or equal to 100 pa. We install exhaust gas concentration sensor 5 at the air outlet of equipment, exhaust gas concentrations such as on-line measuring ammonia, hydrogen sulfide, TVOC, detect data can feed back intelligent control module 6, can control nanometer semiconductor photocatalysis's photocatalysis fluorescent tube quantity according to discharging concentration size to the electric power energy consumption of the whole equipment of more accurate control, when the lower time quantum of laboratory exhaust emission, can avoid the equipment fluorescent tube to open entirely and the energy that leads to is extravagant. The specific constitution and the working principle are introduced as follows:

1 wind pressure sensor

Can detect the pressure sensor of the wind pressure total pressure, precision 0.1pa is more stable than air velocity transducer, and the feedback is more sensitive, and the critical point accessible intelligent control module 6 of feedback adjusts, and this module mainly realizes the linkage with exhaust fan set, and exhaust fan set on-off equipment is opened, and exhaust fan set closes, and equipment is closed, great the energy waste of having avoided.

2 electrodeless lamp 2

An electrodeless microwave electrodeless lamp with the dominant wavelength of 180nm is used for generating a plurality of active oxygen components of O3, O2 and OH, the active oxygen components are fully mixed with waste gas under the drive of waste gas flow, oxidation pretreatment is carried out, the waste gas after oxidation pretreatment enters equipment for nano semiconductor photocatalysis, and the catalytic efficiency can be improved by 50-200%.

3 nanometer semiconductor photocatalysis

Irradiation of the MnOx-TiO2 catalyst by a 365nm vacuum ultraviolet lamp generates electron-hole pairs, the electrons combine with O2 to generate O2, and the holes combine with H2O to generate OH. The hydroxyl free radical OH and superoxide free radical O2-generated by the reaction have strong oxidizing ability, wherein the reaction energy of the hydroxyl free radical is 402.8MJ/mol, which is enough to destroy bonds such as C-C, C-H, C-N, C-O, N-H in inorganic matters and organic matters, so that organic pollutants are completely oxidized to CO2 and H2O under the action of the OH and O2-. Therefore, the method can effectively remove main pollutants in a laboratory such as alcohol, ketone, hydrocarbon, benzene, ammonia, hydrogen sulfide and the like, has the functions of deodorization and sterilization, and produces harmless substances. The third party organization detects that the removal rate of NH3 is more than 95 percent, the removal rate of formaldehyde is more than 90 percent, and the removal rate of benzene is more than 85 percent. In 2016, the technology obtained the national invention patent number: ZL 201410132224.8.

4 ozone removal catalysis module

The industrial ozone decomposition filter screen is a filter screen which is used for purifying air by coating an ozone decomposition catalyst on a specific carrier such as aluminum honeycomb/sponge and accelerating the decomposition and reduction of ozone in the air into oxygen through contact with the ozone in the air. Under the same working condition, the larger the specific surface area of the carrier is, the more sufficient the opportunity of contacting with ozone is; the longer the air residence time, the higher the decomposition efficiency obtained. Through the specific design of the square-shaped structure, the contact area of waste gas passing through the ozone removing and catalyzing module is increased by 2-3 times, the filtering wind speed is less than or equal to 0.3m/s, the module wind resistance is less than or equal to 100pa, the ozone removing efficiency is increased by 2-3 times, and the ozone removing rate is more than or equal to 99 percent generally.

5 exhaust gas concentration sensor

The exhaust gas concentration sensor adopting the electrochemical principle has the detection precision of 0.01mg/m³At least one waste gas concentration sensor is usually installed according to the main gas composition discharged by the laboratory, the detection data can be fed back to the intelligent control module 6, the quantity of the nano semiconductor photocatalysis light-catalyzed tubes can be controlled according to the discharge concentration, so that the electric power energy consumption of the whole device can be controlled more accurately, and when the laboratory waste gas discharge is in a lower time period, the waste of energy caused by the full opening of the light-catalyzed light-.

6 intelligent control system

The DDC control system is provided with a touch screen, the linkage and real-time energy-saving operation of the equipment are mainly fed back and controlled, and the operation state and related technical parameters of the equipment, such as whether the equipment is started, the number of opened ultraviolet lamp tubes, the concentration of waste gas at an air outlet and the like, can be displayed on the touch screen.

Through laboratory tests, the equipment has the advantages of 94 percent of ammonia removal rate, 98 percent of hydrogen sulfide removal rate, 92 percent of dimethylbenzene removal rate, 95 percent of methanol removal rate, 99 percent of candida albicans removal rate and no more than 160 mu g/m of ozone concentration at an air outlet³And the integral wind resistance of the equipment is less than or equal to 150 pa. Can obviously improve the subjective odor feeling of the exhaust gas in pharmaceutical workshops, laboratory animal rooms and biochemical laboratories.

The utility model aims to develop a high-efficiency low-resistance light hydrogen ion air processor which can purify waste gas discharged from laboratories, animal feeding houses, fermentation workshops and the like and has multiple effects of dust removal, sterilization and deodorization.

The method has the advantages that firstly, air pollutants such as high-concentration malodorous gas, TVOCs (dozens of pollutants such as toluene, xylene and methanol) and the like generated in the pharmaceutical production process and the fermentation process are removed;

secondly, odor gases such as aldehydes, benzenes, amines, sulfides, nitrogen oxides and the like generated by a sewage station of a pharmaceutical factory are removed;

thirdly, waste gas generated by normal metabolism of experimental animals is removed, and main components of the waste gas include odor gases such as ammonia, hydrogen sulfide, methyl mercaptan, trimethylamine, styrene, acetaldehyde, methyl disulfide and the like, and also include pathogenic microorganisms and particles;

fourthly, removing air pollutants such as formaldehyde, dimethylbenzene, methanol, organic solvents, biochemical reagents and the like generated in scientific research and inspection operation processes such as medicine, biology, physics and chemistry and the like;

fifthly, odor gas, pathogenic microorganism and aerosol thereof generated in the fermentation culture process of the microorganism laboratory are removed.

Meanwhile, the device has the characteristics of compact structure, high efficiency, small ozone discharge amount, no wastewater discharge, no antifreezing, extremely low wind resistance and the like.

In fig. 1, the drawings illustrate: the high-efficiency low-resistance light oxygen ion waste gas treatment machine comprises 6 parts such as a wind pressure sensor 1, an electrodeless lamp 2, a nano semiconductor photocatalysis system 3, an ozone removal catalysis module 4, a waste gas concentration sensor 5, an intelligent control module 6 and the like. The arrow direction in the figure represents the flow direction of the waste gas in the equipment, the air flow speed of the whole equipment cavity is about 1.2m/s, the filtering air speed passing through the ozone removing catalytic module 4 is less than or equal to 0.3m/s, and the wind resistance of the whole equipment is less than or equal to 150 pa.

Claims

1. A photo-oxygen ion waste gas processor is characterized by comprising an air inlet pipe (11), a processing module and an air outlet pipe (14); one end of the air inlet pipe is connected with the waste gas exhaust outlet, the other end of the air inlet pipe is connected with the inlet of the processing module, and the air outlet pipe (14) is connected with the outlet of the processing module;

the treatment module comprises an electrodeless lamp (2), a nano semiconductor photocatalysis machine (3) and an ozone removal catalysis module (4), and the electrodeless lamp (2), the nano semiconductor photocatalysis machine (3) and the ozone removal catalysis module (4) are sequentially connected.

2. A photo-oxygen ion exhaust gas treatment machine according to claim 1, wherein the treatment module further comprises a first treatment duct (12) and a second treatment duct (13); the first processing pipeline (12) is hermetically connected with the second processing pipeline (13); the electrodeless lamp (2) and the nano semiconductor photocatalysis machine (3) are arranged in the first processing pipeline (12), and the ozone removing and catalyzing module (4) is arranged in the second processing pipeline (13).

3. A photo-oxygen ion exhaust gas processor according to claim 2, wherein the junction of the first processing duct (12) and the second processing duct (13) is a divergent section.

4. A photo-oxygen ion exhaust gas treating machine according to claim 2, wherein the electrodeless lamp (2) is an electrodeless lamp generating electrodeless microwaves of 180nm, the electrodeless lamp (2) being annularly arranged in the first treating pipe (12).

5. A photo-oxygen ion exhaust gas processor according to claim 2, characterized in that the nano semiconductor photo-catalytic machine (3) comprises a plurality of vacuum ultraviolet lamps and a MnOx-TiO2 catalyst, the plurality of vacuum ultraviolet lamps irradiating the MnOx-TiO2 catalyst.

6. A photo-oxygen ion exhaust gas processor as claimed in claim 1, wherein the ozone-removing catalytic module (4) is a sieve coated with an ozone decomposition catalyst.

7. The photo-oxygen ion exhaust gas treatment machine according to claim 6, wherein the filter screens coated with the ozone decomposition catalyst are arranged in a pocket shape.

8. A photo-oxygen ion exhaust gas processor according to claim 1, wherein the air inlet pipe (11) is provided with a wind pressure sensor (1), and the air outlet pipe (14) is provided with an exhaust gas concentration sensor (5).

9. A photo-oxygen ion exhaust gas processor according to claim 8, wherein the processing module is further provided with a control module, and the wind pressure sensor (1) and the exhaust gas concentration sensor (5) are both connected to the control module for controlling the start and stop of the processor.

10. The photo-oxygen ion exhaust gas processor of claim 9, wherein the control module is a DDC control system.