CN101612522A

CN101612522A - A kind of apparatus and method of utilizing ozone, ultraviolet Combined Treatment foul gas

Info

Publication number: CN101612522A
Application number: CN200910041218A
Authority: CN
Inventors: 许加栋; 陈海萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-17
Filing date: 2009-07-17
Publication date: 2009-12-30

Abstract

The invention belongs to technical field of waste gas treatment, be specially a kind of apparatus and method of utilizing ozone, UV treatment foul gas.Apparatus of the present invention are made up of screen pack, ozone generator, forced mixer, ultraviolet photochemical oxidation reactor, deozonize tail gas unit and blower fan.Wherein the ultraviolet catalytic oxidation reactor is combined by some ultraviolet lamp tubes.Foul gas is through screen pack, particulates such as dust in the elimination gas, the ozone that enters the generation of forced mixer and ozone generator then is mixed together and carries out initial reaction, enter after the mixing in the ultraviolet catalytic oxidation reactor, under action of ultraviolet ray, excite ozone gas to produce active oxygen, produce a series of reaction with foul gas, last gas is handled ozone tail gas through the deozonize tail gas unit.Blower fan is placed on the device back, guarantees that reaction unit is in negative pressure state, avoids foul gas to leak.The present invention is big to the foul gas treating capacity, the treatment effeciency height.

Description

A kind of apparatus and method of utilizing ozone, ultraviolet Combined Treatment foul gas

Technical field:

The present invention relates to a kind of gas treatment equipment and method, especially a kind of apparatus and method of utilizing ozone, ultraviolet Combined Treatment foul gas belong to technical field of waste gas treatment.

Background technology:

Odor pollution is one of seven kinds of typical public hazards, is endangering the healthy of people and the peacefulness of living and comfortable.Up to now, the odorant with people's detected by scent has kind more than 4000.Foul gas can be divided into five classes according to its composition.The one, sulfur-containing compound is as hydrogen sulfide, thio-alcohol, thioether class etc.; The 2nd, nitrogen-containing compound is as ammonia, amine, acid amides, indoles etc.; The 3rd, halogen and derivative are as chlorine, halogenated hydrocarbons etc.; The 4th, hydro carbons is as alkane, alkene, alkynes, aromatic hydrocarbon etc.; The 5th, oxygen containing organic matter, as phenol, alcohol, aldehyde, ketone, organic acid etc.

Malodor source can be divided into artificial source and natural origin, the artificial source comprises industrial source and life source, and wherein more serious the and concentrated industry of odor pollution mainly contains: oil refining, coking, petrochemical industry, coal gas, pharmacy, chemical fertilizer, synthetic resin, synthetic fibers, rubber, process hides, printing, paint, food, breed and sewage disposal etc.Along with the enhancing of resident's environmental consciousness, the stench problem will more and more be paid close attention to, and become one of focus of resident's complaint at present.The smelly reason that causes of odorant mainly is the above feature osmophore that contains, and the scent molecule that contains osmophore acts on mutually with olfactory cell, transmits information through olfactory nerves to brain neuroblastoma, thereby finishes the discriminating to smell.Therefore stench is that the resident complains one of maximum environmental problem after noise, and it is very necessary to seek the stench of a kind of practical economical and practical again method in controling environment.

Advantages such as at present, the biological deodorizing method is that present foul smell is handled the most frequently used technology, has investment cost and economizes, and operating cost is low.But also there is the treatment effect instability in the biological deodorizing method, shortcomings such as floor space is big, startup difficulty, handle on the engineering if be applied to close on stenches such as the higher sewage treatment plant of factory, the environmental protection standard of residential block, sewage pumping station, public lavatory and ight soil transfer station, treatment effect often is not very desirable.

The foul gas coverage is wide, the intractability height, though deodorization technology is varied at present, but most of technology prematurity still and perfect, not that to exist accommodation little, the problem that treatment effect is low, floor space is big is exactly that investment is big, operating cost is high, bookkeeping is complicated, easily produce the drawback of secondary pollution.

Summary of the invention:

At above-mentioned the deficiencies in the prior art; the invention provides a kind of method of foul gas purified treatment; and form one and overlap treatment facility efficiently; to adapt to the purified treatment of the foul gas of variable concentrations and composition in the multiple industry; when reducing the pollutant processing cost, improve treatment effeciency, to reach the purpose of protection environment.

For achieving the above object, the technical solution used in the present invention is: a kind of device that utilizes ozone, ultraviolet Combined Treatment foul gas, connected to form successively by screen pack, forced mixer, ultraviolet catalytic oxidation reactor, deozonize tail gas unit and blower fan, ozone generator is connected with forced mixer; Wherein the ultraviolet catalytic oxidation reactor adopts some ultraviolet lamp tubes to form, and reactor wall scribbles the photocatalyst (TiO of anatase titanium dioxide ₂).Described deozonize tail gas unit is the ozone decomposition tail gas unit, is divided into reduction chamber and catalyst chamber, reduces the indoor reducing agent (as active carbon etc.) of putting into, and puts into catalyst (as manganese dioxide etc.) in the catalyst chamber.It is 80～100 orders that described screen pack adopts mesh, is used for the particulate matters such as dust of filtering gas.Described blower fan is connected with the deozonize tail gas unit, is arranged on package unit backmost.

A kind of method of utilizing ozone, ultraviolet Combined Treatment foul gas, its technological process may further comprise the steps:

(4) foul gas preliminary treatment: foul gas filters through screen pack, and the mesh of screen pack is generally 80～100 orders, is used for filtering the particulate matters such as dust of foul gas.Foul gas enters next process after filtering.

(5) ozone oxidation: the ozone mixing initial reaction that pretreated foul gas produces through forced mixer and ozone generator.Enter next procedure then.

(6) ultraviolet catalytic oxidation: by entering the ultraviolet catalytic oxidation reactor after the ozone oxidation, temperature is controlled between 0 ℃-50 ℃, and pressure is normal pressure, and the processing time was 5 to 10 seconds, and it is also different to be directed to the time that the foul smell of variable concentrations handles.Ozone behind the initial reaction in the mist has stronger oxidisability through the active group that ultraviolet lighting produces down, can will further purify removal in the foul gas.

(4) deozonize tail gas:, also have the remaining ozone of part could decompose in the mist through handling through after the series reaction.Therefore the deozonize tail gas unit of using among the present invention is divided into reduction chamber and catalyst chamber, reduces the indoor reducing agent (as active carbon etc.) of putting into, and puts into catalyst (as manganese dioxide etc.) in the catalyst chamber, can decompose redundant ozone.

(5) high altitude discharge: the gas high altitude discharge is gone out by blower fan.

Adopt apparatus and method of the present invention to handle foul gas, handles large-mindedly, the reaction time is short, and the efficient height is removed in deodorizing, and clean-up effect is ideal very.

Description of drawings:

Fig. 1 is the connection sketch for the treatment of apparatus of the present invention.

Fig. 2 is the structural representation of ultraviolet catalytic oxidation reactor.

Fig. 3 is the structural representation of deozonize tail gas unit

The specific embodiment:

As shown in Figure 1: the screen pack 1 of passing through after foul gas is collected is removed particulate matters such as dust, enter forced mixer 2 then and carry out initial reaction with the ozone that ozone generator 3 produces, make odorant that a series of reaction take place, make its decomposition and be converted into harmless or other odorless material; Enter together subsequently in the ultraviolet catalytic oxidation reactor 4, a small amount of unreacted odorant carries out single step reaction at ultraviolet catalytic oxidation reactor 4.Ozone gas in the mist produces ion-oxygen under ultraviolet lighting, further continue reaction with a small amount of unreacted odorant.Finally reach and eliminate the stench purpose, behind ultraviolet catalytic oxidation reactor 4, mist a part of ozone also decomposes through deozonize tail gas unit 5.At last by blower fan 6 high altitude discharges.Blower fan 6 is placed at last, guarantees reaction unit processing negative pressure state, avoids foul gas to leak.

As shown in Figure 2: ultraviolet catalytic oxidation reactor 4 adopts some ultraviolet lamp tubes 9 to form, and reactor wall scribbles the photocatalyst 10 (TiO of anatase titanium dioxide ₂).

As shown in Figure 3: deozonize tail gas unit 5 is divided into reduction chamber and catalyst chamber, reduces the indoor reducing agent (as active carbon etc.) of putting into, and puts into catalyst (as manganese dioxide etc.) in the catalyst chamber.

Claims

1, a kind of device that utilizes ozone, ultraviolet Combined Treatment foul gas, it is characterized in that: connected to form successively by screen pack, forced mixer, ultraviolet catalytic oxidation reactor, deozonize tail gas unit and blower fan, ozone generator is connected with forced mixer; Wherein be provided with ultraviolet lamp tube in the ultraviolet catalytic oxidation reactor, reactor wall scribbles the photocatalyst of anatase titanium dioxide; Described deozonize tail gas unit is the ozone decomposition tail gas unit, is divided into reduction chamber and catalyst chamber, reduces the indoor reducing agent of putting into, and puts into catalyst in the catalyst chamber; Described blower fan is connected with the deozonize tail gas unit, is arranged on package unit backmost.

2, a kind of device that utilizes ozone, ultraviolet Combined Treatment foul gas as claimed in claim 1, it is characterized in that: described reducing agent is an active carbon, described catalyst is a manganese dioxide.

3, a kind of device that utilizes ozone, ultraviolet Combined Treatment foul gas as claimed in claim 1 is characterized in that: it is 80～100 orders that described screen pack adopts mesh.

4, a kind of method of utilizing ozone, ultraviolet Combined Treatment foul gas is characterized in that technological process may further comprise the steps:

(1) foul gas preliminary treatment: foul gas filters through screen pack, and foul gas enters next process after filtering;

(2) ozone oxidation: the foul gas after the filtration enters next procedure then through forced mixer and the ozone mixing initial reaction that ozone generator produces;

(3) ultraviolet catalytic oxidation: foul gas enters the ultraviolet catalytic oxidation reactor after by ozone oxidation, and temperature is controlled between 0 ℃-50 ℃, and pressure is normal pressure, and the processing time was 5 to 10 seconds, and it is also different to be directed to the time that the foul smell of variable concentrations handles;

(4) deozonize tail gas:, the remaining ozone of part in the mist is decomposed by the reduction chamber and the catalyst chamber of deozonize tail gas unit;