CN211274603U

CN211274603U - Baffling multi-pass type photocatalytic oxidation pollutant degradation processor

Info

Publication number: CN211274603U
Application number: CN201921027887.8U
Authority: CN
Inventors: 王文谨
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-08-18
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a baffling multipass formula light catalytic oxidation degradation pollutant treater, including lower floor's buffer chamber, upper buffer chamber, photocatalytic reactor, flow pipe, baffling board, the medium baffling of upper and lower unit buffering reservoir is realized through every layer of fixed position's baffling board. The purpose of the medium passing through the flow tube is to prolong the reaction time of the medium in the processor, thereby improving the processing efficiency. A siliceous porous spherical material with excellent adsorbability is used as a carrier of the catalyst. The ultraviolet light source and the catalyst adopt the arrangement mode of the tubular central light source circumferential radiation catalyst, a quartz glass tube with good light transmission is selected as a protective layer of the lamp outside the lamp tube, and the outer sleeve of the reactor is made of stainless steel material which is light-corrosion resistant material. The contact between the photocatalyst and the medium to be treated is designed by a baffling n-program treatment method in a unit space. The overall design is reasonable, the operation is simple and convenient, and the unit space treatment efficiency is high.

Description

Baffling multi-pass type photocatalytic oxidation pollutant degradation processor

Technical Field

The utility model relates to a baffling multithread formula light catalytic oxidation degradation pollutant treater is applied to the air circumstance and the water environment field that contain organic pollutant, VOC and particulate pollutant.

Background

With the continuous development of the industrialization process, the environmental pollution problem becomes more and more serious, and the environmental problem becomes a key problem influencing the survival and development of human beings. The environmental pollution is mainly reflected in water and air. The pollutants are mainly: the trace organic matters in the drinking water include phenols, benzenes, perchloric organic matters, various bacteria and the like. The industrial wastewater comprises various organic matters; the air contains NOx, COx, HC, VOCs, harmful particulate matters and the like.

At present, the technologies of adsorption treatment, biochemical treatment, filtration treatment, chemical treatment and the like are mostly adopted for treating pollutants in water bodies and pollutants in air. The biochemical treatment technology and the chemical treatment technology can decompose or degrade part of organic pollutants, and the treatment cost is high. Other treatments, while relatively low in cost, are not effective in degrading or eliminating organic materials. Taking drinking water purification treatment as an example, in the aspect of drinking water purification treatment, the membrane filtration purification treatment device is mainly installed at present to solve the problem of drinking water purification. This method is only a physical filtration treatment method, and organic substances in water are blocked at the outer side of the membrane, and it has no function of decomposing organic compounds, so it does not solve the problem that organic substances still exist. When the membrane reaches a certain load, it will completely lose its filtering effect. The same problem also exists in the indoor air purification treatment. At present, in the aspect of indoor air purification treatment, the purification effect is mainly achieved through an air purifier. The principle of operation of air purifiers is primarily filtration through the membrane, and airborne contaminants such as Volatile Organic Compounds (VOCs) are not removed. This is also a big difficulty in solving the problem of environmental pollution.

The photocatalytic oxidation technology is a novel method for removing VOCs and other organic compounds. The method utilizes strong oxidative hydroxyl free radicals and negative oxygen ions generated by a semiconductor photocatalyst under the irradiation of ultraviolet light, and a series of complex and interrelated free radical reactions are caused by the existence of the hydroxyl free radicals, and the reactions finally cause the mineralization and degradation of organic matters, so that the organic matters are oxidized and reduced into harmless inorganic matters. Thereby removing various pollutants in the air or water and achieving the purpose of purification. The catalyst is not subjected to any decrement loss, and is not poisoned, failed or replaced due to load problems. However, the photocatalytic oxidation technology is not widely popularized and applied at present. The main reasons are as follows: the method has the advantages that (1) no new breakthrough exists in selecting an effective and durable photocatalyst carrier, namely how to fix the solid powdery photocatalyst on an object resistant to ultraviolet light corrosion for a long time; (II) the optimal arrangement design problem of the ultraviolet light source and the catalyst in a limited space, namely the photocatalyst can be maximally irradiated by the light source, so that the oxidation reaction area of the photocatalyst and a treated medium is enlarged, and the treatment efficiency is improved; and (III) the reasonable design of the effective contact reaction process of the photocatalyst and the treated medium in the limited space.

SUMMERY OF THE UTILITY MODEL

Aiming at the practical problems, a baffling multi-pass processor for photocatalytic oxidation degradation of pollutants is provided through a large number of research experiments and combined with practical experimental application.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a baffling multi-pass processor for photocatalytic oxidation degradation of pollutants comprises a lower layer buffer chamber, an upper layer buffer chamber, a photocatalytic reactor, a flow tube and baffle plates,

the lower buffer chamber is divided into a plurality of independent lower unit buffer chambers without medium circulation by the baffle plate, the upper buffer chamber is divided into a plurality of independent upper unit buffer chambers without medium circulation by the baffle plate, the lower unit buffer chamber at one side is provided with a medium inlet, and the upper unit buffer chamber or the lower unit buffer chamber at the tail end of a medium flowing route is provided with a medium outlet;

a plurality of photocatalytic reactors are arranged side by side between the lower-layer buffer chamber and the upper-layer buffer chamber, each photocatalytic reactor comprises an inner sleeve, an outer sleeve and a photocatalyst-adsorbed carrier between the inner sleeve and the outer sleeve, the inner sleeve is a transparent quartz glass tube, the upper end face and the lower end face of the outer sleeve are provided with circulation holes for media to flow through the photocatalyst-adsorbed carrier from the lower unit buffer chamber and then flow into the corresponding upper unit buffer chamber, and the ultraviolet lamp is sealed in the inner sleeve and a sealing plug;

the flow tube is arranged between the lower layer buffer chamber and the upper layer buffer chamber and is used for conveying the medium between the upper unit buffer chamber and the lower unit buffer chamber.

Wherein the photocatalyst is nano-TiO₂Or ZnO, the carrier being a siliceous porous spherical material, e.g. SiO₂Micro-spheres, mixing nano-TiO₂Or preparing ZnO photocatalyst into colloidal solution, soaking the siliceous porous spherical carrier into the colloidal solution according to the amount, and air-drying for a certain time to obtain the practical photocatalyst.

Wherein, the ultraviolet lamp passes through the wire and connects the power, and the wire is accomodate in the wire tube at casing top.

Wherein, the shell, the flow tube, the baffle plate, the outer sleeve and the conduit are made of stainless steel.

The utility model has the advantages that: the medium baffling of the upper unit buffer storage chamber and the lower unit buffer storage chamber is realized by a baffle plate at a fixed position of each layer. The purpose of the medium passing through the flow tube is to prolong the reaction time of the medium in the processor, thereby improving the processing efficiency. A siliceous porous spherical material with excellent adsorbability is used as a carrier of the catalyst. An efficient photocatalytic reactor is designed by adopting an arrangement mode of a tubular central light source circumferential radiation catalyst for an ultraviolet light source and the catalyst. The reactor is tubular, the ultraviolet lamp light source is located in the tubular axis position, the quartz glass tube with good light transmission is selected as the protective layer of the lamp outside the lamp tube, and the outer sleeve of the reactor is made of stainless steel material which is light corrosion resistant material. The contact between the photocatalyst and the medium to be treated is designed by a baffling n-program treatment method in a unit space. The overall design is reasonable, the operation is simple and convenient, and the unit space treatment efficiency is high.

Drawings

Fig. 1 is a block diagram of a processor according to the present invention.

Detailed Description

The invention will be further explained with reference to specific embodiments.

As shown in fig. 1, a baffling multi-pass processor for photocatalytic oxidation degradation of pollutants comprises a lower layer buffer chamber, an upper layer buffer chamber, a photocatalytic reactor, a process pipe and baffle plates;

the lower buffer chamber is divided into a plurality of independent lower unit buffer chambers 9 without medium circulation by a baffle plate 14, wherein the chambers are respectively a chamber A, a chamber B and a chamber C, the upper buffer chamber is divided into a plurality of independent upper unit buffer chambers 10 without medium circulation by the baffle plate 14, the chambers are respectively a chamber a, a chamber B and a chamber C, the chamber A of the lower unit buffer chamber at one side is provided with a medium inlet 4, and the chamber C of the upper unit buffer chamber at the tail end of a medium flowing route is provided with a medium outlet 3;

a plurality of photocatalytic reactors are arranged side by side between the lower-layer buffer chamber and the upper-layer buffer chamber, each photocatalytic reactor comprises an inner sleeve 15, an outer sleeve 7 and a photocatalyst-adsorbed carrier 8 between the inner sleeve and the outer sleeve, the inner sleeve 15 is a transparent quartz glass tube, the upper end face and the lower end face of the outer sleeve are provided with circulation holes 12 for media to flow through the photocatalyst-adsorbed carrier from the lower unit buffer chamber and then flow into the corresponding upper unit buffer chamber, and the ultraviolet lamp 16 is sealed in the inner sleeve 15 and a sealing plug 6;

the flow pipe 13 is provided between the lower buffer chamber and the upper buffer chamber, and conveys the medium between the upper unit buffer chamber and the lower unit buffer chamber.

Ultraviolet lamp 16 is connected to power supply 2 via lead 5, which is housed in a conduit 17 at the top of the housing.

The shell 1, the process pipe 13, the baffle plate 14, the outer sleeve 7 and the conduit 17 are all made of corrosion-resistant 304 stainless steel materials.

The medium flows through the path as indicated by the arrow in fig. 1:

1. the medium to be treated should be mesh filtered before entering the present processor. The purpose is to prevent flocculent impurities and other larger impurities from entering the processor so as to avoid affecting the processing effect.

2. The medium after the primary filtration through the meshes enters a chamber A at the bottom of the processor. At this time, the chamber A of the bottom sealing storage layer is in a positive pressure state. The design pressure in the closed chamber is 0.2 Mpa.

Then the medium enters into the corresponding three reactors from the chamber A of the lower unit buffer chamber, enters into the gap of the catalyst carrier irradiated by light between the inner sleeve and the outer sleeve through the through hole 12 and enters into the chamber a of the upper unit buffer chamber. At this time, the upper unit buffer chamber a is in a positive pressure state. The design pressure in the upper unit buffer chamber a is 0.15 Mpa.

3. Under the action of positive pressure of 0.15Mpa, the medium enters the process pipe from the chamber a of the upper unit buffer chamber, and the medium enters the chamber B of the lower unit buffer chamber through the process pipe.

4. The medium enters the next group of reactors from the chamber B of the lower storage layer and then enters the next flow pipe from the chamber B of the upper unit buffer, and the medium enters the chamber C of the lower unit buffer through the flow pipe. The design pressure in the upper unit buffer chamber b was 0.1 Mpa.

5. The medium enters the last flow pipe from the chamber C of the lower unit buffer chamber, and the medium enters the chamber C of the upper unit buffer chamber through the flow pipe. Is discharged into the chamber through the medium outlet 3. The design pressure of the medium outlet is 0.03-0.05 Mpa.

The medium baffling of the upper unit buffer storage chamber and the lower unit buffer storage chamber is realized by the baffle plates at fixed positions of each layer. The purpose of the medium passing through the flow tube is to prolong the reaction time of the medium in the processor, thereby improving the processing efficiency. The medium after the first primary treatment and the four-fold five-way (depending on the specific treatment object, the fold process flow can be increased or decreased) photocatalytic oxidation treatment in the reactor contains organic compounds which are finally degraded into H₂O、CO₂And the like, harmless inorganic substances. When the processor is used for air purification, the power source of the processor is from an external air pump. When used for purifying drinking water, the power source is based on the pressure in the tap water systemTo implement its flow driving. The whole treatment process is carried out in a sealed state.

Claims

1. A baffling multi-pass processor for photocatalytic oxidation degradation of pollutants is characterized by comprising a lower layer buffer chamber, an upper layer buffer chamber, a photocatalytic reactor, a flow tube and baffle plates,

2. The baffled multipass photocatalytic oxidative degradation pollutant treating device of claim 1, wherein the photocatalyst is nano-sized TiO₂Or ZnO.

3. The baffled multipass photocatalytic oxidative degradation pollutant treating device of claim 1, wherein the support is a siliceous porous spherical material.

4. The baffled multipass photocatalytic oxidative degradation pollutant treating device of claim 1, wherein the ultraviolet lamp is connected to a power source through wires that are received within a wire tube at the top of the housing.

5. The baffled multipass photocatalytic oxidative degradation pollutant treating device of claim 1, wherein a quality detector probe is located in the upper unit buffer chamber or the lower unit buffer chamber near the media outlet.

6. The baffled multipass photocatalytic oxidative degradation pollutant treating device of claim 4, wherein the housing, flow tubes, baffles, outer sleeve, and conduit are made of stainless steel.