CN205683836U

CN205683836U - A kind of photocatalytic oxidation device

Info

Publication number: CN205683836U
Application number: CN201620368871.3U
Authority: CN
Inventors: 贠延滨; 常方; 梁志霞
Original assignee: Beijing Forestry University
Current assignee: Beijing Forestry University
Priority date: 2016-04-27
Filing date: 2016-04-27
Publication date: 2016-11-16
Anticipated expiration: 2026-04-27

Abstract

This utility model is a kind of photocatalytic oxidation device, is a kind of emission-control equipment.When waste gas enters in device by exhaust gas entrance with certain flow velocity, the O that Minisize ozone generator produces₃Also simultaneously enter device, be sufficiently mixed.Under the irradiation of uviol lamp, through the catalytic action of catalyst, waste gas generation chemical reaction purifies.Gas after treatment is separating with catalyst during two phase separator, and the final gas produced is discharged by outlet, and catalyst glides by inclined-plane again, until by carry out at catalyst port entrance air inlet again with.Additionally, there is a removable nanoscale filter screen at gas outlet, intercept catalyst.

Description

A kind of photocatalytic oxidation device

Technical field

This utility model is a kind of photocatalytic oxidation device, is a kind of emission-control equipment.

Background technology

Photocatalysis oxidation technique is a kind of advanced oxidation processes that recent decades grows up.It is by specific light source (as Ultraviolet light UV) and catalyst (TiO₂Deng) synergy carries out the process of degradation treatment to organic exhaust gas.TiO₂Chemical stability The advantages such as good, resistance to photoetch, therefore become most widely used catalyst.

Carrying out light-catalyzed reaction needs oxidant, current photocatalytic oxidation device to be mostly utilized in the side of inner side plated film Formula adds catalyst, and this method is the most relatively difficult, and makes catalyst insufficient contact with gas, and catalytic effect is poor. Additionally, in this condition, catalyst is difficult to recycling, causes a large amount of waste.

Therefore, for problem above, it would be desirable to provide a kind of cheap, and the photocatalytic-oxidation makeup of excellent catalytic effect Put.

Summary of the invention

The purpose of this utility model is to overcome the problem in the presence of above-mentioned existing equipment, it is provided that a kind of novel being easy to Recycle catalyst and the photocatalytic oxidation device of reaction capable of circulation, reach to improve catalytic effect, recycling catalyst, Reduce the purpose of cost.

The technical scheme that this utility model realizes above-mentioned purpose is as follows.

A kind of photocatalytic oxidation device, through the dried waste gas of gas dryer with certain flow velocity entrance device, meanwhile, The O that Minisize ozone generator produces₃Together enter device, be sufficiently mixed.

At waste gas and O₃Individual nanocatalyst is had, when gas is through out-of-date, due to flow velocity at the mixed gas air inlet of composition Excessive, catalyst can be driven to enter together in reaction unit.

Be equipped with a fixing uviol lamp as light source at reaction unit centre bit, waste gas under the irradiation of uviol lamp, warp The catalytic action crossing catalyst is reacted.Owing to urceolus, inner core all have the light transmission of 100%, gas is in two phase separator Photocatalytic oxidation all can be carried out during circulation.In addition.During whole, when gas flow rate declines, catalyst is certainly By landing.

Catalyst after landing keeps falling along with smooth bevel, until arriving bottom, inclined-plane, then passes through catalyst Port falls, and enters at the air inlet of mixed gas, waits recycling.

Exit has removable filter screen, the catalyst that interception is discharged, and purified gas meeting with purified gas Enter smoothly in air.

Further illustrate with the detailed description of the invention present invention below in conjunction with the accompanying drawings.

Accompanying drawing explanation

This utility model will illustrate by example and with reference to the appended drawing.

Fig. 1 is the structure chart of a kind of photocatalytic oxidation device.

Fig. 2 is the top view of a kind of photocatalytic oxidation device.

Fig. 3 is the sectional drawing of a kind of photocatalytic oxidation device.

In figure, 1. nanoscale filter screen, 2. gas outlet, 3. two phase separator, 4. fix post, 5. outer wall, 6. urceolus, 7. in Cylinder, 8. uviol lamp, 9. smooth bevel, 10. air intake, 11. Minisize ozone generators, 12. catalyst ports, 13. gases are done Dry device, 14. exhaust gas entrances.

Detailed description of the invention

Any feature disclosed in this specification (including any accessory claim, summary and attached), unless specifically stated otherwise, All can be by other equivalences or there is the alternative features of equal similar purpose replaced.I.e., unless specifically stated otherwise, each feature is only It it is an example in a series of equivalence or similar characteristics.

Embodiment.

A kind of new catalytic oxidation furnaces of the present embodiment, wherein inner core 7 is disjunct with two phase separator 3；And outward Cylinder 6 then links together with two phase separator 3；Fixing post 4 has 4, and its effect is fixing two phase separator 3；Inner core is with outer The material of cylinder has the light transmission of 100%, can be as a example by glass；Catalyst is with nano-TiO herein₂As a example by.

Waste gas first passes through entrance 14 and enters gas dryer 13 and be dried, and dried gas enters with certain flow velocity Enter reaction unit.Meanwhile, the O that Minisize ozone generator 11 produces₃Enter device；Nano-TiO is there is at both positions of mixing₂, Now gas flow rate is relatively big, when flowing through herein, can drive nano-TiO₂Together enter inner core 7, be sufficiently mixed.

In inner core 7, mixed gas is through the irradiation of uviol lamp 8, at nano-TiO₂Catalytic action under, react； When gas arrives inner core 7 top, being entered urceolus 6 by the stop of two phase separator 3, now the flow velocity of gas can decline, its In nano-TiO₂Arrival smooth bevel 9 can be constantly declined due to action of gravity；Gas in urceolus 6 can be transported downwards afterwards OK, when arriving bottommost, the outermost layer of device can be entered, nano-TiO during this₂Also can free fall to smooth bevel 9, Gas the most constantly rises, by outlet 2 effusion；Owing to the light transmission of inner core 7, urceolus 6 is all 100%, and in whole cyclic process In all have TiO₂Participation, so the gas in inner core 7, urceolus 6 and outer wall 5 can carry out photocatalysis oxidation reaction always, it is to avoid The problem that response time is too short.

There is a removable nanoscale filter screen 1 at its middle outlet 2, intercept the nano-TiO in gas₂.Now, two-phase divides Topmost from device 3 is smooth, the TiO after interception₂Fall to two phase separator 3, be then slipped to smooth bevel 9；And it is clean Gas after change is then entered in air by gas outlet 2.

It is scattered in the TiO on smooth bevel 9₂Gradually, when arriving the bottom on inclined-plane, by multiple catalyst ports 12 Drop at air inlet.As waste gas and O₃By time, again bring in device reuse.

Claims

1. a photocatalytic oxidation device, mainly by uviol lamp, Minisize ozone generator, two phase separator and smooth bevel structure Become, it is characterised in that: uviol lamp is positioned at device middle；Complete two phase separator is formed at outer layer and the top of uviol lamp； In device, there is a smooth bevel in lower floor, and its bottom exists multiple catalyst port；Device bottom is exhaust gas entrance, with air Exsiccator is connected；It is topmost gas outlet, at gas outlet, there is nanoscale filter screen；Minisize ozone generator is positioned at the bottom of device Portion, provides O for device₃。

2. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: device bottom is deposited at gas access, both sides respectively At gas dryer and Minisize ozone generator, Main Function is dry waste gas and produces O₃So that it is the most mixed in device Close.

3. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: there is nanocatalyst at air inlet, work as gas Body is through out-of-date, owing to flow velocity is excessive, catalyst can be driven to enter together in reaction unit.

4. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: it is equipped with one at reaction unit centre bit and fixes Uviol lamp as light source, waste gas is under the irradiation of uviol lamp, and the catalytic action through catalyst is reacted.

5. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: two phase separator is positioned at device top, effect For being separated with catalyst by gas in gas recycle process, gas enters urceolus and discharges, and owing to flow velocity declines, catalyst is freely Landing.

6. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: there is a smooth bevel in bottom of device, fall The catalyst fallen behind is scattering on smooth bevel downslide, by catalyst passage port, drops to air inlet, waits recycling.

7. photocatalytic oxidation device as claimed in claim 1, it is characterised in that: there is removable filter screen in exit, intercept with The catalyst that purified gas is discharged.