CN114082286A - Method for treating ozone based on microwave - Google Patents

Method for treating ozone based on microwave Download PDF

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Publication number
CN114082286A
CN114082286A CN202010858977.2A CN202010858977A CN114082286A CN 114082286 A CN114082286 A CN 114082286A CN 202010858977 A CN202010858977 A CN 202010858977A CN 114082286 A CN114082286 A CN 114082286A
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ozone
microwave
gas
target
reducing agent
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马中发
王露
阮俞颖
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Shaanxi Qinglang Wancheng Environmental Protection Technology Co Ltd
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Shaanxi Qinglang Wancheng Environmental Protection Technology Co Ltd
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Priority to CN202010858977.2A priority Critical patent/CN114082286A/en
Publication of CN114082286A publication Critical patent/CN114082286A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75Multi-step processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007Separation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/66Ozone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/76Gas phase processes, e.g. by using aerosols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8671Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • B01D53/8675Ozone
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Dispersion Chemistry (AREA)
  • Toxicology (AREA)
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Abstract

The invention provides a method for treating ozone based on microwaves, which is applied to equipment for treating ozone by microwaves and is characterized by comprising the following steps: acquiring a first characteristic parameter of gas at a gas inlet; wherein the characteristic parameters comprise the flow rate of ozone and the concentration of ozone; determining a target number of parts of the reducing agent based on the first characteristic parameter; treating ozone based on the target fraction reducing agent, the target microwave power and the electrodeless ultraviolet lamp; and discharging the treated gas from the gas outlet. The invention treats ozone and waste gas based on the actions of microwave, reducing agent and electrodeless ultraviolet lamp, realizes high-efficiency decomposition of ozone, and has simple equipment structure, low equipment energy consumption and long-term stable operation.

Description

Method for treating ozone based on microwave
Technical Field
The invention relates to the technical field of odor treatment, in particular to a method for treating ozone based on microwaves.
Background
With the increase of urbanization speed, environmental pollution becomes serious, and especially water pollution and atmospheric pollution seriously harm human health. Studies have shown that the limiting concentration of acceptable ozone in humans within one hour is 260. mu.g/m 3. A1 h activity in 320 ug/m 3 ozone environment resulted in cough, dyspnea and decreased lung function. Ozone can also participate in the reaction of unsaturated fatty acid, amino and other proteins in organisms, so that people who directly contact high-concentration ozone for a long time have the problems of fatigue, cough, chest distress and pain, skin wrinkling, nausea and headache, accelerated pulse, memory deterioration, visual deterioration and the like.
In the prior art, the elimination of ozone mainly comprises: the activated carbon adsorption method, the thermal decomposition method, the electromagnetic wave radiation decomposition method, the catalytic decomposition method and the like have certain effects in the ozone elimination technology.
However, the prior art methods for eliminating ozone have problems of high cost, high energy consumption and applicability to low-concentration ozone, so that there is an urgent need for a method which has a low treatment cost, a high ozone decomposition rate and can be stably operated for a long time.
Disclosure of Invention
The present invention aims at providing a method for treating ozone based on microwave to solve the problems of high cost, high energy consumption and suitability for low concentration ozone.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, the present invention provides a microwave-based method for treating ozone, comprising:
acquiring characteristic parameters of the gas in the inner cavity; wherein the characteristic parameters comprise the temperature of the gas, the ammonia concentration and the pressure of the inner cavity;
adjusting the microwave source power based on the characteristic parameter;
treating the urea in the inner cavity based on the microwave source;
and discharging the treated gas from a gas outlet.
Optionally, the adjusting the power of the microwave source based on the characteristic parameter includes:
judging the relation between the temperature and a preset temperature;
if the temperature is greater than or equal to the preset temperature, adjusting the microwave power;
correspondingly, the treatment of the urea in the inner cavity based on the microwave source comprises:
and treating the urea in the inner cavity based on the adjusted microwave power.
Optionally, the urea in the inner cavity is treated based on the adjusted microwave power, and then the method further includes:
obtaining treated gas obtained by treating urea in the inner cavity based on the adjusted microwave power;
discharging the treated gas from the gas outlet.
Optionally, the adjusting the power of the microwave source based on the characteristic parameter further includes:
judging the relation between the ammonia gas concentration and a preset concentration;
and if the ammonia gas concentration is greater than or equal to the preset concentration, adjusting the microwave power and increasing the water spraying amount.
Optionally, the method further includes:
if the ammonia gas concentration is greater than or equal to the preset concentration, adjusting the microwave power and increasing the rotating speed of a fan; wherein, the fan is used for discharging the gas.
Optionally, the adjusting the power of the microwave source based on the characteristic parameter further includes:
judging the relation between the inner cavity pressure and a preset pressure;
and if the pressure is less than or equal to the preset pressure, increasing the content of urea in the reaction cavity, and adjusting the microwave power dust.
In a second aspect, the invention also discloses a microwave-based ozone treatment device, which comprises: the microwave reactor comprises a reaction cavity, a microwave source, a feed hopper, an air inlet, a pump, an air outlet, an inner cavity, a heat insulation layer, a spray head and a pressure sensor;
wherein the microwave sources are arranged on two opposite side walls of the reaction cavity; a heat insulation layer is arranged between the inner cavity and the inner wall of the reaction cavity; the feed hopper is arranged at the top of the reaction cavity; and urea enters the reaction cavity from the feed hopper, is decomposed under the action of the microwaves and the spray head, and is discharged from the gas outlet.
In a third aspect, the invention also discloses a device for treating ozone based on microwave, which comprises: an acquisition module, an adjustment module, a processing module and an output module,
the acquisition module is used for acquiring characteristic parameters of the gas in the inner cavity; wherein the characteristic parameters comprise the temperature of the gas, the ammonia concentration and the pressure of the inner cavity;
the adjusting module is used for adjusting the power of the microwave source based on the characteristic parameters;
the treatment module is used for treating the urea in the inner cavity based on the microwave source;
and the output module is used for discharging the treated gas from a gas outlet.
In a fourth aspect, the present invention also discloses an electronic device, including: comprising a processor, a memory for storing instructions, the processor being configured to execute the instructions stored in the memory to cause the apparatus to perform the microwave-based ozone treatment apparatus as described above in relation to the first aspect.
In a fifth aspect, the present invention also discloses a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the instructions are executed, the computer is caused to execute the microwave-based ozone treatment apparatus according to the first aspect.
The invention has the beneficial effects that: the invention provides a method for treating ozone based on microwaves, which comprises the following steps: acquiring characteristic parameters of the gas in the inner cavity; wherein the characteristic parameters comprise the temperature of the gas, the ammonia concentration and the pressure of the inner cavity; adjusting the microwave source power based on the characteristic parameter; treating the urea in the inner cavity based on the microwave source; the treated gas is discharged from a gas outlet. That is, the invention treats ozone and waste gas based on the action of microwave, reducing agent and electrodeless ultraviolet lamp, realizes high-efficiency decomposition of ozone, and has simple equipment structure, low equipment energy consumption and long-term stable operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow diagram of an apparatus for microwave-based ozone treatment according to an embodiment of the present invention;
FIG. 2 is a schematic view of an apparatus for microwave-based ozone treatment according to another embodiment of the present invention;
FIG. 3 is a schematic view of an apparatus for microwave-based ozone treatment according to another embodiment of the present invention;
FIG. 4 is a schematic view of an apparatus for treating ozone based on microwaves according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a schematic flow chart of a microwave-based method for treating ozone according to an embodiment of the present invention; FIG. 2 is a schematic view of an apparatus for microwave-based ozone treatment according to another embodiment of the present invention; FIG. 3 is a schematic view of an apparatus for microwave-based ozone treatment according to another embodiment of the present invention; FIG. 4 is a schematic view of an apparatus for treating ozone based on microwaves according to another embodiment of the present invention. The process for treating ozone based on microwaves provided by the embodiment of the present invention will be described in detail below with reference to fig. 1 to 4.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in FIG. 1, a schematic flow chart of a microwave-based ozone treatment method is provided for an embodiment of the present invention, and the method is applied to an apparatus for microwave treatment of ozone. The steps involved in the method are described in detail below with reference to fig. 1.
Step 101: a first characteristic parameter of the inlet gas is acquired.
Wherein the characteristic parameters comprise the flow rate of ozone and the concentration of ozone;
in the embodiment of the invention, the gas inlet of the microwave ozone treatment equipment is provided with the sensor, and the first characteristic parameter of the gas at the gas inlet is detected based on the sensor. The gas entering the gas inlet can comprise a variety of gases, for example, gas inlet gases including VOCs, carbon dioxide, hydrogen sulfide, carbon monoxide, ammonia, and the like. The embodiment of the invention mainly provides a method for removing ozone. The first characteristic parameter is the flow rate of ozone per unit time and the concentration of ozone detected by the sensor.
Step 102: a target fraction of reducing agent is determined based on the first characteristic parameter.
In the embodiment of the present invention, the target part of the reducing agent refers to the amount of the reducing agent for eliminating ozone. A controller in the ozone treatment equipment acquires a first parameter of ozone, and determines the amount of the reducing agent to be added according to the concentration and the flow rate of the ozone.
In the embodiment of the present invention, step 102 determines the target number of parts of the reducing agent based on the first characteristic parameter, which may specifically be implemented by the following steps:
step 1021: based on the first characteristic parameter, a first fraction of the reducing agent is determined.
In the embodiment of the invention, the first characteristic parameter refers to the concentration of ozone at the air inlet and the flow rate of the ozone in unit time. The first fraction is the amount of reducing agent that the controller determines from the concentration and flow rate of the inlet ozone. The air inlet and the air outlet of the ozone treatment equipment are respectively provided with a sensor for detecting the flow and the concentration of ozone and sending collected data to the controller in real time, and the controller determines the first part of the reducing agent according to the characteristic parameters.
Step 1022: and acquiring a second characteristic parameter of the gas at the gas outlet.
In the embodiment of the invention, the second characteristic parameter refers to the concentration of ozone at the air outlet and the flow rate of the ozone in unit time.
Step 1023: and adjusting the first part number according to the second characteristic parameter to obtain the target part number of the reducing agent.
Step 103: and treating the ozone based on the target fraction reducing agent, the target microwave power and the electrodeless ultraviolet lamp.
In the embodiment of the invention, the target microwave power refers to the finally determined power of the microwave in the process of treating the ozone equipment. The target power can be such that the microwave treatment of ozone does not generate secondary pollutant power. The electrodeless ultraviolet lamp is worth 254nm, and further, under the irradiation of the 254nm electrodeless ultraviolet lamp, ozone molecules are cracked to generate oxygen atoms and oxygen.
Illustratively, after entering the microwave ozone treatment equipment, ozone is mixed with a reducing agent in a mixing cavity, so that the ozone generates oxidation-reduction reaction for the first time, the ozone is eliminated, the gas after reaction passes through an ozone catalyst again, the ozone content is further reduced, then the ozone is further decomposed under the irradiation of microwaves and 254nm electrodeless ultraviolet lamps, and after the ozone is decomposed for multiple times, the decomposed odorless and harmless gas is finally discharged from a gas outlet.
In the embodiment 103 of the present invention, the treatment of ozone based on the target fraction of the reducing agent, the target microwave power and the electrodeless ultraviolet lamp further includes:
and 103a, acquiring a second characteristic parameter of the gas at the gas outlet.
And 103b, adjusting the power of the microwave source based on the second characteristic parameter to obtain the target microwave power.
In the embodiment of the present invention, step 103b adjusts the power of the microwave source based on the second characteristic parameter to obtain the target microwave power, which can be implemented in the following two ways.
And in the first mode, if the second characteristic parameter is greater than or equal to the preset threshold value, reducing the power of the microwave source to obtain the target microwave power.
In the embodiment of the invention, the controller determines that the ozone concentration of the air inlet is greater than the preset threshold value according to the ozone concentration and the ozone flow information sent from the air inlet and the air outlet, and then increases the flow of the reducing agent or controls the air inlet to reduce the flow of the entering ozone.
And secondly, if the second characteristic parameter is smaller than the preset threshold value, keeping the power of the microwave source as the target microwave power.
In the embodiment of the invention, the controller determines that the concentration of ozone at the air port is greater than a preset threshold value, reduces the power of the microwave source, and increases the flow of the reducing agent to determine that the microwave power after the power of the microwave source is reduced is the target power. Further, the controller determines that the gas port ozone concentration is greater than a preset threshold, or controls the gas inlet to reduce the flow of the entering ozone.
And 103c, treating the ozone based on the target fraction reducing agent, the target microwave power and the electrodeless ultraviolet lamp.
In the embodiment of the invention, the controller controls the ozone treatment equipment to perform multiple times of strengthening treatment on the ozone according to the determined target parts of the reducing agent, the adjusted target microwave power and the 254nm electrodeless ultraviolet lamp.
Step 104: and discharging the treated gas from the gas outlet.
In the embodiment of the invention, the treated gas comprises carbon dioxide, water and ammonia gas, and the treated gas is discharged from the gas outlet. Furthermore, a filter screen is arranged at the outlet of the microwave urea hydrolysis equipment and used for filtering particles generated after the reaction of the waste gas molecules to be treated. Wherein, the filter screen is replaceable to be convenient for later maintenance.
In the embodiment of the invention, the method for treating ozone based on microwave in the invention is a urea hydrolysis device based on microwave, and comprises the following steps: acquiring characteristic parameters of the gas in the inner cavity; wherein the characteristic parameters comprise the temperature of the gas, the ammonia concentration and the pressure of the inner cavity; adjusting the power of the microwave source based on the characteristic parameters; treating the urea in the inner cavity based on a microwave source; the treated gas is discharged from the gas outlet. Namely, the urea is hydrolyzed under the action of the microwave source, so that the urea is efficiently decomposed, the energy consumption required in the urea decomposition process is reduced, and the urea hydrolysis device is energy-saving and environment-friendly.
In another possible embodiment, the present invention also provides an apparatus for treating ozone based on microwaves, as shown in fig. 2, the apparatus comprising: the method comprises the following steps: reaction chamber 1, microwave source 2, feed inlet 3, air inlet 4, mixing chamber 5, agitator 6, fluorescent tube 7, support 8, catalyst 9 and gas outlet 10.
In the embodiment of the invention, the ozone has strong oxidizing property, is an oxidant stronger than oxygen, and can perform an oxidation reaction at a lower temperature, such as oxidizing silver into silver peroxide, oxidizing lead sulfide into lead sulfate, and reacting with potassium iodide to generate iodine. Turpentine, coal gas and the like can spontaneously combust in ozone. Ozone is a powerful bleaching agent in the presence of water. Ozonides are also readily formed at low temperatures with unsaturated organic compounds. Used as strong oxidant, bleaching agent, fur deodorizer, air purifier, disinfectant, and drinking water. Ozone can be used to replace many catalytic oxidations or high-temperature oxidations in chemical production, simplifying the production process and increasing the productivity. However, when a human inhales an excessive amount of ozone at a high concentration, fatigue, cough, chest distress and pain, skin wrinkles, nausea and headache, acceleration of pulse, memory deterioration, visual deterioration, and the like may occur.
In the embodiment of the present invention, the stirrer 6 is used for uniformly mixing the reducing agent entering from the inlet port 3 and the ozone entering from the inlet port 4. Illustratively, the reductant can be methanol, hydrogen, carbon monoxide, methane, or the like. The reducing agent enters the mixing cavity 5 from the feed inlet 3 at a preset flow rate, the ozone enters the mixing cavity 5 in the reaction cavity 1 from the air inlet 4, and the reducing agent and the ozone are mixed under the action of the stirrer 6.
Optionally, the lamp tube 7 is an electrodeless ultraviolet lamp with a wavelength of 254 nm.
In the embodiment of the present invention, the lamp tube 7 is uniformly disposed on the bracket 8. Under the irradiation of an electrodeless ultraviolet lamp with the wavelength of 254nm, ozone is decomposed, so that the ozone is efficiently treated.
Optionally, a catalyst 9 is disposed between the regions of the adjacent uniform arrays of light tubes 7, wherein the catalyst 9 is an ozone catalyst, and the ozone catalyst is attached to the frame. The frame is made of a material that does not absorb microwaves.
In the embodiment of the invention, an electrodeless ultraviolet lamp with the wavelength of 254nm is fixed on the bracket 8. Optionally, every n 254nm electrodeless ultraviolet lamps are used as a reaction zone, wherein n is a positive integer greater than 5 and less than 20. Therefore, a plurality of ultraviolet lamp reaction zones are arranged in the reaction cavity, and a catalyst is arranged among the reaction zones. Is made of a material which does not absorb microwaves. For example, the frame may be polytetrafluoroethylene.
Optionally, the microwave source comprises a plurality of microwave sources, and the plurality of microwave sources are arranged on the top of the reaction cavity in an array manner.
In the embodiment of the present invention, the reaction chamber 1 is made of metal, and the metal is made of high temperature resistant metal. The microwave source 2 refers to a device for generating microwave energy, referred to as a microwave source. Here, the microwave source 2 includes a plurality of microwave sources 2, and the plurality of microwave sources 2 are distributed in an array on the top of the reaction chamber. The microwave is an electric wave having a frequency of 300 mhz to 300 ghz, and water molecules in the heated medium material are polar molecules. Under the action of a rapidly changing high-frequency point magnetic field, the polarity orientation of the magnetic field changes along with the change of an external electric field. The effect of mutual friction motion of molecules is caused, at the moment, the field energy of the microwave field is converted into heat energy in the medium, so that the temperature of the material is raised, and a series of physical and chemical processes such as thermalization, puffing and the like are generated to achieve the aim of microwave heating.
The microwave heating has the following advantages: the heating time is short; the heat energy utilization rate is high, and energy is saved; heating uniformly; the microwave source is easy to control, and the microwave can also induce the catalytic reaction.
The microwave is generated by a microwave source, which is mainly composed of a high-power magnetron. The magnetron is a device which completes energy conversion by utilizing the movement of electrons in vacuum and can generate high-power microwave energy, for example, a 4250MHz magnetic wave tube can obtain 5MHz, and a 4250MHz klystron can obtain 30MHz, so that the microwave technology can be applied to the technical field of wastewater treatment.
Optionally, the apparatus for removing ozone by microwave further comprises a sensor for detecting the flow rate and concentration of the air inlet and the air outlet.
In the embodiment of the invention, an ozone flow detection sensor and an ozone concentration detection sensor are arranged at the air inlet 4 of the reaction cavity 1. Correspondingly, an ozone flow detection sensor and an ozone concentration detection sensor are arranged at the air outlet 10 of the reaction chamber 1.
Optionally, the apparatus for microwave removal of ozone further comprises a controller for adjusting the power of the microwave source 2 according to the flow rate and/or concentration.
In the embodiment of the invention, the information of the ozone concentration and the ozone flow detected at the air inlet 4 and the air outlet 10 is transmitted to the controller in real time, and when the controller determines that the ozone concentration of the air inlet 4 is greater than a first preset threshold value, the flow of the reducing agent is increased, or the air inlet 4 is controlled to reduce the flow of the entering ozone. The controller determines that the concentration of ozone in the gas port 10 is greater than a second predetermined threshold, reduces the power of the microwave source, and increases the flow of the reducing agent. Further, the controller determines that the gas inlet 10 ozone concentration is greater than a second predetermined threshold, or controls the gas inlet 4 to reduce the flow of ozone into the gas inlet.
In the embodiment of the invention, the metal nets are respectively arranged at the air inlet 4 and the air outlet 10 of the microwave ozone eliminating equipment to prevent the microwave from leaking. Furthermore, the aperture of the metal net is less than or equal to 3 mm. Here, in order to prevent the microwave leakage. When the human body is very close to the microwave radiation source for a long time, the phenomena of dizziness, sleep disorder, hypomnesis, bradycardia, blood pressure reduction and the like are caused by excessive radiation energy. When the microwave leakage reaches 1mw/cm2, the eyes suddenly feel dazzled, the vision is degraded, and even cataract is caused. In order to ensure the health of users, metal nets are arranged at the inlet and the outlet of the reaction cavity, and the corners can generate microwave discharge under the action of microwaves, so that dangerous accidents are easy to happen. The metal mesh can block microwave leakage, reduce the damage of microwave to human body and improve the safety of the system.
In the embodiment of the invention, in order to uniformly heat the reaction cavity 1 under the action of the microwave sources 2, a plurality of microwave sources 2 are arranged at the top of the reaction cavity 1. It should be noted that under the action of the external alternating electromagnetic field, the polar molecules in the material are polarized and alternate orientation is achieved along with the change of the polarity of the external alternating electromagnetic field, so that the electromagnetic energy is converted into heat energy due to frequent friction loss among a plurality of polar molecules.
Wherein, the microwave source 2 is arranged at the top of the reaction cavity 1; the lamp tube 7 in the reaction chamber 1 is fixed on the bracket 8; the stirrer 6 is arranged in the mixing cavity 5; ozone enters the reaction cavity 1 from the gas inlet, and treated gas is discharged from the gas outlet 10 under the action of the reducing agent, the microwave source 2 and the lamp tube 7.
In the embodiment of the invention, ozone enters the mixing cavity 5 from the air inlet 4 of the reaction cavity 1, and the reducing agent enters the mixing cavity 5 from the feed hopper 3, and the reducing agent in the mixing cavity 5 is mixed with the ozone under the action of the stirrer 6. Further, the mixed gas is subjected to ozonolysis through an ozone catalyst 9 layer, the decomposed gas is subjected to multistage treatment, namely is decomposed under the combined action of microwaves and 254nm electrodeless ultraviolet lamps for many times, and finally the decomposed oxygen and other harmless gases are discharged out of the reaction cavity 1 from the gas outlet 10.
Furthermore, the air outlet 10 of the device for eliminating ozone based on microwave can be provided with a filter screen, and the filter screen is used for filtering particulate matters generated after the ozone molecules to be treated react. Wherein, the filter screen is replaceable to be convenient for later maintenance.
The embodiment discloses a device based on microwave elimination ozone, a device based on microwave elimination ozone includes: the microwave catalytic reactor comprises a reaction cavity 1, a microwave source 2, a feed inlet 3, a gas inlet 4, a mixing cavity 5, a stirrer 6, a lamp tube 7, a bracket 8, a catalyst 9 and a gas outlet 10; wherein, the microwave source 2 is arranged at the top of the reaction cavity 1; the lamp tube 7 in the reaction chamber 1 is fixed on the bracket 8; the stirrer 6 is arranged in the mixing cavity 5; ozone enters the reaction cavity 1 from the gas inlet 4, and treated gas is discharged from the gas outlet under the action of the reducing agent, the microwave source and the lamp tube. That is, the invention treats ozone and ozone based on the action of microwave, reducing agent and electrodeless ultraviolet lamp, realizes high-efficiency decomposition of ozone, and has simple equipment structure, low equipment energy consumption and long-term stable operation.
Fig. 3 is a schematic diagram of a microwave-based urea hydrolysis apparatus according to another embodiment of the present invention. The device includes: an acquisition module 301, a determination module 302, a processing module 303 and an output module 304,
an obtaining module 301, configured to obtain a first characteristic parameter of gas at a gas inlet; .
Wherein the characteristic parameters comprise the flow rate of the ozone and the concentration of the ozone.
A determination module 302 for determining a target fraction of the reducing agent based on the first characteristic parameter.
And the processing module 303 is used for processing the ozone based on the target fraction of the reducing agent, the target microwave power and the electrodeless ultraviolet lamp.
And the output module 304 is used for discharging the treated gas from the gas outlet.
It should be noted that, for the descriptions of the same steps and the same contents in this embodiment as those in other embodiments, reference may be made to the descriptions in other embodiments, which are not described herein again.
In an embodiment of the present invention, an apparatus for treating ozone based on microwave in the present invention includes: the device comprises an acquisition module 301, a determination module 302, a processing module 303 and an output module 304, wherein the acquisition module 301 is used for acquiring a first characteristic parameter of gas at a gas inlet; wherein the characteristic parameters comprise the flow rate of ozone and the concentration of ozone; a determination module 302 for determining a target fraction of the reducing agent based on the first characteristic parameter; the processing module 303 is used for processing ozone based on the target fraction of the reducing agent, the target microwave power and the electrodeless ultraviolet lamp; and the output module 304 is used for discharging the treated gas from the gas outlet. That is, the invention treats ozone and waste gas based on the action of microwave, reducing agent and electrodeless ultraviolet lamp, realizes high-efficiency decomposition of ozone, and has simple equipment structure, low equipment energy consumption and long-term stable operation.
FIG. 4 is a schematic diagram of a urea hydrolysis plant based on microwave, which is integrated in a terminal device or a chip of the terminal device, according to another embodiment of the present invention.
The device includes: memory 401, processor 402.
The memory 401 is used for storing programs, and the processor 402 calls the programs stored in the memory 401 to execute the embodiment of the device for treating ozone based on microwaves. The specific implementation and technical effects are similar, and are not described herein again.
Preferably, the invention also provides a program product, such as a computer-readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (9)

1. A method for treating ozone based on microwave is applied to equipment for treating ozone by microwave, and is characterized by comprising the following steps:
acquiring a first characteristic parameter of gas at a gas inlet; wherein the characteristic parameters comprise the flow rate of ozone and the concentration of ozone;
determining a target portion of reducing agent based on the first characteristic parameter;
treating the ozone based on the target fraction of reducing agent, target microwave power and electrodeless ultraviolet lamps;
and discharging the treated gas from a gas outlet.
2. The microwave-based method for treating ozone according to claim 1, wherein the determining a target portion of reducing agent based on the first characteristic parameter comprises:
determining a first fraction of the reducing agent based on the first characteristic parameter;
acquiring a second characteristic parameter of the gas at the gas outlet;
and adjusting the first part number according to the second characteristic parameter to obtain the target part number of the reducing agent.
3. The microwave-based method for treating ozone as claimed in claim 1, wherein the treating of the ozone based on the target fraction of reducing agent, the target microwave power and electrodeless ultraviolet lamps further comprises:
acquiring a second characteristic parameter of the gas at the gas outlet;
adjusting the power of the microwave source based on the second characteristic parameter to obtain target microwave power;
treating the ozone based on the target fraction of reducing agent, the target microwave power, and the electrodeless ultraviolet lamp.
4. The method of claim 3, wherein adjusting the power of the microwave source based on the second characteristic parameter to obtain a target microwave power comprises:
and if the second characteristic parameter is larger than or equal to a preset threshold value, reducing the power of the microwave source to obtain the target microwave power.
5. The microwave-based method for treating ozone as claimed in claim 4, wherein the method further comprises:
and if the second characteristic parameter is smaller than a preset threshold value, keeping the power of the microwave source as the target microwave power.
6. An apparatus for treating ozone based on microwaves, comprising: the device comprises a reaction cavity, a microwave source, a feed inlet, an air inlet, a mixing cavity, a stirrer, a lamp tube, a bracket, a catalyst and an air outlet;
wherein the microwave source is arranged at the top of the reaction cavity; the lamp tube in the reaction cavity is fixed on the bracket; the stirrer is arranged in the mixing cavity; ozone enters the reaction cavity from the gas inlet, and treated gas is discharged from the gas outlet under the action of the reducing agent, the microwave source and the lamp tube.
7. An apparatus for microwave-based treatment of ozone, the apparatus comprising: an acquisition module, a determination module, a processing module and an output module,
the acquisition module is used for acquiring a first characteristic parameter of gas at the gas inlet; wherein the characteristic parameters comprise the flow rate of ozone and the concentration of ozone;
the determining module is used for determining the target number of parts of the reducing agent based on the first characteristic parameter;
the processing module is used for processing the ozone based on the target fraction of the reducing agent, the target microwave power and the electrodeless ultraviolet lamp;
and the output module is used for discharging the treated gas from a gas outlet.
8. An electronic device, characterized in that the electronic device comprises: comprising a processor, a memory for storing instructions, the processor for executing the instructions stored in the memory to cause the apparatus to perform the microwave-based method of treating ozone according to any one of claims 1 to 5.
9. A computer-readable storage medium having computer-executable instructions stored therein, which when executed, cause a computer to perform the microwave-based ozone treatment method of any one of claims 1 to 5.
CN202010858977.2A 2020-08-24 2020-08-24 Method for treating ozone based on microwave Pending CN114082286A (en)

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Publication number Priority date Publication date Assignee Title
CN105170150A (en) * 2015-10-12 2015-12-23 重庆科技学院 Supported metallic oxide catalyst for assisting microwave denitration and preparation method and using method thereof
CN106582284A (en) * 2016-12-14 2017-04-26 河南华润电力古城有限公司 Automatic control method and system of thermal-power-unit SCR denitration ammonia spraying
CN107321147A (en) * 2017-06-29 2017-11-07 西北农林科技大学 A kind of device for eliminating Ozone in Atmosphere
CN108392981A (en) * 2018-05-08 2018-08-14 陕西青朗万城环保科技有限公司 A kind of ozone abater
CN212942238U (en) * 2020-08-24 2021-04-13 陕西青朗万城环保科技有限公司 Device for eliminating ozone based on microwave

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105170150A (en) * 2015-10-12 2015-12-23 重庆科技学院 Supported metallic oxide catalyst for assisting microwave denitration and preparation method and using method thereof
CN106582284A (en) * 2016-12-14 2017-04-26 河南华润电力古城有限公司 Automatic control method and system of thermal-power-unit SCR denitration ammonia spraying
CN107321147A (en) * 2017-06-29 2017-11-07 西北农林科技大学 A kind of device for eliminating Ozone in Atmosphere
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