CN101607177A - Photochemistry food and drink oil smoke deodorizing method and use therein photochemistry food and drink oil smoke odor eliminator - Google Patents
Photochemistry food and drink oil smoke deodorizing method and use therein photochemistry food and drink oil smoke odor eliminator Download PDFInfo
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- CN101607177A CN101607177A CNA2009100414218A CN200910041421A CN101607177A CN 101607177 A CN101607177 A CN 101607177A CN A2009100414218 A CNA2009100414218 A CN A2009100414218A CN 200910041421 A CN200910041421 A CN 200910041421A CN 101607177 A CN101607177 A CN 101607177A
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Abstract
Photochemistry food and drink oil smoke deodorizing method of the present invention and use therein photochemistry food and drink oil smoke odor eliminator belong to atmosphere and urban and rural residents living environment resist technology field.Described deodorizing method is respectively with ultraviolet ray irradiation and photocatalyst catalysis with oil smoke.Described odor eliminator comprises the oil smoke inlet and the oil smoke outlet of shell, the formed cavity of shell and cavity, also respectively is provided with some ultraviolet source devices and photocatalyst catalytic unit in the cavity.Method of the present invention is with ultraviolet ray, ozone and photocatalyst three and usefulness, the associating of ozone and various active free radical strong oxidizer is also used simultaneously, mutual synergy between them has played the comprehensive catalytic effect that multiplies each other, accelerate photodissociation, oxidizing reaction rate greatly, the purification work course of photodissociation, oxidation is less than 0.1 time in second, increased substantially the efficient of the poisonous and smell substance purified treatment of food and drink oil smoke.
Description
[technical field]
The present invention relates to a kind of method and use therein equipment and system thereof that is used to purify food and drink and food processing industry oil smoke noxious material and peculiar smell, belong to atmosphere and urban and rural residents living environment resist technology field.
[background technology]
Reform and open up to the outside world town and country food and drink since 30 years, food-processing industry obtained tremendous development, living standards of the people are greatly improved, and produce a large amount of oil smoke and peculiar smell in the stir-fry process but cook, and peculiar smell is diffusion everywhere towards periphery, pungent unpleasant, severe contamination atmosphere and both urban and rural residents's living environment.
In general the catering trade flue gas is formed complicated component by kitchen range burnt gas and cooking fume two parts Combination pollutant.According to the study, have 200～300 kinds of chemical substances, 74 kinds of poisonous chemical compositions are wherein arranged.The kitchen range burnt gas is one group of Combination pollutant, and dust, soot, moisture and all cpds are arranged, and compound mainly contains aldehyde, ketone, hydrocarbon, alcohol, ester, aromatic compound etc.Wherein contain mutagen and carcinogenic substances such as benzo [a] pyrene (B[a] P), heterocyclic amine compound.
Cooking fume be edible oil or food under hot conditions, take place a series ofly to change the back and form.Will begin to occur low smoke when being heated to 170 ℃ as edible oil, along with the rising of temperature, the decomposition rate of oil is accelerated, and a large amount of cooking fumes can occur when reaching 250 ℃, and during people's cooking common oily temperature all about 250 ℃.Cooking fume also is one group of Combination pollutant, mainly from moving (planting) thing oil, fish, meat, vegetables and various condiment in the gastronomical process fry in shallow oil at high temperature, explode, thermal response when frying, as thermal oxidative reaction, heat polymerization, thermal oxide polymerisation, heat scission reaction and hydrolysis etc., generate some than some bigger materials of normal plants oil molecule (triglyceride) polarity, as oxidation products, thermal polymerization product, thermal oxide polymerizate, the hydrolysate (free-fat etc.) of triglyceride class.What is more, and the oil temperature is fried in big fire soon can produce carcinogenic substances such as volatile nitrosamine and Ppolynuclear aromatic in time more than 270 ℃, and typical poisonous carcinogenic substance is exactly nitro polycyclic aromatic hydrocarbons (PAH) DNP.
In the blast pipe in restaurant, a large amount of greases, dust, soot and moisture are arranged in the effluent, these materials can and remove in the wet goods operation and remove in smoke abatement and dust control, but also contain multiple noxious material in the waste gas of discharging and peculiar smell is difficult for removing, and endanger very big.In addition, also contain venomous injurants such as bacterium, virus in the exhaust in restaurant.Caused negative effect not only for peripheral resident living environment, working environment, and the grievous injury people's is healthy, contains multiple poisonous chemical composition in the cooking fume, human body is had lungs toxicity, immunotoxicity, genetoxic and potential carcinogenicity.Hong Kong Department of Health proposes the toxicity evidence: confirm certain toxic material DNP in the food and drink oil smoke, oil smoke causes lung cancer, and DNP is No.1 killer, and meal kitchen personnel boil a meal, and sucking the DNP total amount is outdoor 188 times! The people who lives in for a long time in such environment easily suffers from lung cancer and other disease.Poisonous, smell pollution thing in the oil smoke and venomous injurants such as bacterium, virus are also suddenly treated efficiently to purify and remove.The scholar advises that compatriots do improvement more as far as possible on mist extractor equipment!
In the past, people attempt to make method treatment and purification peculiar smell such as water flushing and activated carbon filtration, absorption, have not also caused secondary pollution but effect is not only good.The somebody adopts the method for the biological biological fluids that eliminates the unusual smell, with taste removal working solution atomizing, be sprayed near the space kitchen, allow smell substance molecule in the taste removal working solution droplet absorption oil smoke, the smell substance molecule and the taste removal working solution that are adsorbed react, the also very high secondary pollution in addition of poor effect that the result not only eliminates the unusual smell but also cost.
[summary of the invention]
The present invention aim to provide a kind of can be with quick photochemical photochemistry food and drink oil smoke deodorizing method and the use therein photochemistry food and drink oil smoke odor eliminator that is decomposed into small-molecule substance of the poisonous and smell substance in the food and drink oil smoke.
Photochemistry food and drink oil smoke deodorizing method of the present invention, it shines oil smoke and photocatalyst catalysis with ultraviolet ray respectively.
In a preferred embodiment, described ultraviolet ray irradiation and photocatalyst catalytic step carry out simultaneously.
In another preferred embodiment, be to carry out photocatalyst catalysis earlier, carry out the ultraviolet ray irradiation again, and repeatedly repeatedly.
In another preferred embodiment, described ultraviolet wavelength is 100～200nm.
Photochemistry food and drink oil smoke odor eliminator of the present invention comprises the oil smoke inlet and the oil smoke outlet of shell, the formed cavity of shell and cavity, also respectively is provided with some ultraviolet source devices and photocatalyst catalytic unit in the cavity.
In a preferred embodiment, the ultraviolet wavelength of described ultraviolet source device generation is 100～200nm.
In another preferred embodiment, described photocatalyst catalytic unit reticulates and is arranged on the orientation vertical with the oil smoke flow direction.
In another preferred embodiment, on the outer casing inner wall of oil smoke inlet side, be provided with equal wind guiding device.
In another preferred embodiment, the distance that enters the mouth greater than the photocatalyst catalytic unit and the oil smoke of the most close oil smoke inlet of the distance of ultraviolet source device of the most close oil smoke inlet and oil smoke inlet.
Method of the present invention makes the poisonous and smell substance of food and drink oil smoke carry out quick photochemical reaction, promptly with oxygen and poisonous and smell substance in the ultraviolet ray irradiation food and drink oil smoke, make the oxygen ozonize, simultaneously to poisonous, there is the polymer substance of peculiar smell that quick photolysis takes place, make poisonous and peculiar smell polymer substance molecular chain rupture, be decomposed into little molecular radical, in photocatalyst catalysis and ozone also under the mutual synergy of usefulness quick oxidation reaction takes place simultaneously, and then be oxidized to water, small-molecule substances such as carbon dioxide, thus reach the decomposition noxious material, remove peculiar smell, the purpose of purifying oil fume.In addition, with ultraviolet ray irradiation bacterium, virus, after the DNA in its cell (DNA), ribonucleic acid (RNA) and nucleoprotein absorb ultraviolet ray, cause the fracture of DNA chain, cause the crosslinked of nucleic acid and albumen to break, kill the biologically active of nucleic acid, reach the sterilization purpose.Wherein the ozone of Chan Shenging is extremely short pilot process product of life-span, and it can not discharged with waste gas.
Method of the present invention is with ultraviolet ray, ozone and photocatalyst three and usefulness, the associating of ozone and various active free radical strong oxidizer is also used simultaneously, mutual synergy between them has played the comprehensive catalytic effect (seeing Table 1) that multiplies each other, accelerate photodissociation, oxidizing reaction rate greatly, the purification work course of photodissociation, oxidation is less than 0.1 time in second, increased substantially the efficient of the poisonous and smell substance purified treatment of food and drink oil smoke.
Table 1: variety of way in water or gas separately or and the key reaction form of time spent
| ??O 3(ozone) is independent | UV (ultraviolet ray) is independent | ??UV+O 3(ultraviolet ray+ozone) | UV (ultraviolet ray)+O 3(ozone)+photocatalyst |
| ??O 3(strong oxidizing force) | ??H 2O+UV--OH. (strong oxidizing force) UV (strong decomposing force) | ??UV+O 2---O 2 -(strong oxidizing force) O 2 -+H 2O-H 2O 2(strong oxidizing force) H 2O 2+ UV---2OH. (strong oxidizing force) (O 2 -Constantly produce, OH. is doubled and redoubled, and concentration ratio ultraviolet ray as a result is high separately a lot, and reaction speed is O 310-100 in the time of separately doubly) | ??H 2O-e (UV+ photocatalyst)-OH. (strong oxidizing force) O 2+ e (UV+ photocatalyst)-O 2 -(super oxygen) O 2 -+H +-HO 2. (superpower activity) HO 2+O 2 -+H +-H 2O 2(strong oxidizing force) HO 2+HO 2-H 2O 2(strong oxidizing force) H 2O 2+ UV---2OH. (superpower oxidizing force) (O 2 -Produce in rapid succession, CH. sharply is doubled and redoubled, and concentration ratio ultraviolet ray as a result is high separately a lot, reaction speed |
| Be O 3100-10000 in the time of separately doubly) |
In addition, in preference, select ultraviolet ray (Ultraviolet radiation) the irradiation oil smoke of 100～200nm for use, make wherein ozoniferous while of oxygen molecule can not follow the generation of pernicious gases such as NOx, this is because form triple bond between N2 molecule N and N atom, i.e. two π key one σ keys, bond energy is powerful, and the ultraviolet photon energy of this patent has only below the 650KJ/mol, is not enough to separately N2 molecule triple bond.
And general ozoniferous method is with gas molecule method in the electrion ionized air, air was breakdown after high pressure acquired a certain degree, airborne gas is ionized, oxygen molecule wherein is ionized the back and produces oxygen atom and then be combined into ozone molecule, and nitrogen molecule also may be ionized to nitrogen-atoms and then be oxidized to NOx simultaneously.So just can follow the generation of pernicious gases such as NOx when having only with the ozoniferous generator generation of electrion process ozone.This point detects NOx concentration by the entrance and exit in photochemistry food and drink oil smoke taste removal system respectively with Saltzman method (GB/T15435-95) and is confirmed, and testing result is that outlet NOx concentration is not higher than inlet NOx concentration.
In addition, according to research is arranged, the titanium base film can also carry out oxidative degradation to existing NOx gas phase under photocatalysis, so odor eliminator not only can not produce NOx, also can carry out certain degradation to the original NOx that exists in the flue gas environment.
Photochemistry food and drink oil smoke odor eliminator of the present invention has following technique effect:
1, both can eliminate noxious material and peculiar smell in the oil smoke flue gas, can also sterilize simultaneously.
2, with most greases, noxious material with the smell substance molecule becomes carbon dioxide and hydrone is taken away by air draft, residual, do not produce secondary pollution, quartz burner does not place in the closed system so radiationless pollution meets environmental protection and modern management requirement.
3, the photocatalyst catalytic unit not only has powerful catalytic capability, and himself does not decompose, and almost can permanently bring into play its oxidation, catalytic action.
[description of drawings]
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the vertical view of Fig. 1;
Structural representation when Fig. 3 is embodiment one use.
[specific embodiment]
Embodiment one
Fig. 1 and Fig. 2 are the structural representation of different angles of a preferred embodiment of photochemistry food and drink oil smoke odor eliminator 17 of the present invention, as seen from the figure, photochemistry food and drink oil smoke odor eliminator 17 is provided with shell 6, the formed cavity of shell, oil smoke inlet 7 and oil smoke outlet 11, on oil smoke enters the mouth shell 6 inwalls of 7 one sides, be provided with equal wind guiding device 5, support solid cryopreservation device 8 by ultraviolet source respectively in the cavity and photocatalyst catalytic unit fixed part 4 respectively is fixed with some ultraviolet source devices 2 and netted photocatalyst catalytic unit 3.Wherein, photocatalyst catalytic unit 3 is to be arranged on the direction vertical with the oil smoke flow direction.Ultraviolet source device 2 is that the ultraviolet lamp tube of 100～200nm and electric ballast etc. are formed by wavelength, and quartz burner becomes columnar arrangement in the basal plane vertical with the oil smoke direction; Also be provided with the special protector 1 of fluorescent tube on the device, quartz burner row forms a clean unit with photocatalyst catalytic unit 3 both alternate layouts, and each clean unit is formed the integrated array shape, and the unit group is several to be determined according to actual demands of engineering.Ultraviolet source supports solid 8 pairs of ultraviolet lamp tubes of cryopreservation device and plays a supportive role, annexes such as electric ballast are played the effect of depositing admittedly, and electric ballast can also be connected separately with fluorescent tube by anti-thermal wire and exist in the electric cabinet admittedly.Be furnished with accessories such as various electric switches, indicator lamp and overload protection, short-circuit protection, open-phase protection, warning in the electric cabinet, the certain operations panel also is installed on the electric cabinet face, man-machine interface etc. are with handled easily.Access door 9 easy accesses also can be set on shell, and it is fixing by bolt 10.
During use, oil smoke evenly enters in the photochemistry food and drink oil smoke odor eliminator 17 by the equal wind guiding device 5 in the odor eliminator, then the food and drink oil flue waste gas is by the prostatitis photocatalyst catalytic unit 3 in the odor eliminator, catalytic unit is held back a small amount of oil droplet earlier, get rid of the obstacle that influences quartz burner work, realize purifying task.Under ultraviolet source device 2 sent ultraviolet ray irradiation, the poisonous and peculiar smell polymer substance of the part in the food and drink oil flue waste gas was excited and begins to take place photodissociation, the fracture of molecule marriage chain, and poisonous and peculiar smell polymer substance is broken down into little molecular radical after the photodissociation; This ultraviolet source device 2 sends ultraviolet ray and partial oxygen molecule in the oil flue waste gas also is excited be decomposed into oxonium ion, be oxidized to ozone O with another part oxygen molecule simultaneously
3, realize purifying task.Be solidified with nanoscale at the ultraviolet irradiation lower surface and contain under the effect of photocatalyst catalytic unit 3 of vanadium titanium class material, the water in the oil flue waste gas is converted into hydrogen peroxide, and then forms active extremely strong hydroxyl radical free radical OH-, hydroperoxyl free radical HO
2-, ultra-oxygen anion free radical O
2-isoreactivity free radical, meanwhile, in the food and drink oil flue waste gas as yet not poisonous the and peculiar smell polymer substance of photodissociation continue the photodissociation that is excited, all be decomposed into little molecular radical, these living radicals and ozone life-span that the photocatalyst catalytic action produces are extremely short, and oxidation activity is extremely strong, and oxidation reaction successively takes place for ozone and these living radical double actions little molecular radical after the catalysis photodissociation very fast, generate small-molecule substances such as water, carbon dioxide, realize purifying task.Follow-up photodissociation, oxidation reaction all realize, finish the purification task.
These purify task and carry out across mutually; Bacterium, virocyte material molecule also with in the oil flue waste gas poisonous, the photodissociation of peculiar smell polymer substance is the same, after the absorption ultraviolet ray of DNA in its cell (DNA), ribonucleic acid (RNA) and nucleoprotein, cause the fracture of DNA chain, cause the crosslinked of nucleic acid and albumen to break, biologically active is killed, and reaches the sterilization purpose.
Embodiment two
The structural representation that Fig. 3 uses in a photochemistry food and drink oil smoke taste removal system for the preferred photochemistry food and drink of the present invention oil smoke odor eliminator, as seen from Figure 3, photochemistry food and drink oil smoke taste removal system is removed oil sprayer 15, reducer pipe 16, photochemistry food and drink oil smoke odor eliminator 17 of the present invention, tube connector 18, blower fan 19 and discharge pipe 20 and is formed by the enclosure 12 that is communicated with successively, swan neck 13, side's change pipe 14, static.
During use, food and drink oil smoke (comprising cooking fume and kitchen range burnt gas) sucks through enclosure 12 under force ventilated condition, enter elbow, side's change pipe, static except that oil sprayer 15, after static removes oil sprayer 15 preliminary preliminary treatment, then enter photochemistry food and drink oil smoke odor eliminator 17 through reducer pipe 16, through after ultraviolet ray irradiation and the light catalase catalytic action purification, oil smoke material generation photodissociation, oxidation reaction are broken down into materials such as little molecule such as carbon dioxide and water in odor eliminator.The fracture of the DNA chain in the bacterial cell simultaneously causes the crosslinked of nucleic acid and albumen to break, and its biologically active is killed, and flue gas after treatment is nontoxic, free from extraneous odour, pollution-free, after tube connector 18, blower fan 19, discharge pipe 20 back dischargings.
Claims (9)
1, photochemistry food and drink oil smoke deodorizing method is characterized in that oil smoke respectively with ultraviolet ray irradiation and photocatalyst catalysis.
2, deodorizing method as claimed in claim 1 is characterized in that ultraviolet ray irradiation and photocatalyst catalytic step carry out simultaneously.
3, deodorizing method as claimed in claim 1 is characterized in that carrying out earlier photocatalyst catalysis, carries out the ultraviolet ray irradiation again, and repeatedly repeatedly.
4,, it is characterized in that described ultraviolet wavelength is 100～200nm as claim 1 or 2 or 3 described deodorizing methods.
5, a kind of photochemistry food and drink oil smoke odor eliminator that uses in the method for claim 1, comprise the oil smoke inlet (7) and the oil smoke outlet (11) of shell (6), the formed cavity of shell and cavity, it is characterized in that also respectively being provided with in the cavity some ultraviolet source devices (2) and photocatalyst catalytic unit (3).
6, photochemistry food and drink oil smoke odor eliminator as claimed in claim 5, the wavelength that it is characterized in that described ultraviolet source device (2) is 100～200nm.
7,, it is characterized in that described photocatalyst catalytic unit (3) reticulates to be arranged on the direction vertical with the oil smoke flow direction as claim 5 or 6 described photochemistry food and drink oil smoke odor eliminators.
8, photochemistry food and drink oil smoke odor eliminator as claimed in claim 7 is characterized in that being provided with equal wind guiding device (5) on shell (6) inwall of oil smoke inlet (7) one sides.
9, photochemistry food and drink oil smoke odor eliminator as claimed in claim 8, a ultraviolet source device (2) that it is characterized in that the most close oil smoke inlet (7) and the distance of oil smoke inlet (7) are greater than the most close oil smoke the enter the mouth distance of (7) of a photocatalyst catalytic unit (3) and the oil smoke of (7) that enter the mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100414218A CN101607177A (en) | 2009-07-27 | 2009-07-27 | Photochemistry food and drink oil smoke deodorizing method and use therein photochemistry food and drink oil smoke odor eliminator |
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| CNA2009100414218A CN101607177A (en) | 2009-07-27 | 2009-07-27 | Photochemistry food and drink oil smoke deodorizing method and use therein photochemistry food and drink oil smoke odor eliminator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920393A (en) * | 2014-04-22 | 2014-07-16 | 桂林理工大学 | Treatment method for performing solid phase catalytic oxidation on cooking oil fume through camellia shell carbon-fenton-like reagent |
| CN112169514A (en) * | 2020-09-30 | 2021-01-05 | 佛山市顺德区金磊环保科技有限公司 | Combined type oil smoke purifier |
-
2009
- 2009-07-27 CN CNA2009100414218A patent/CN101607177A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920393A (en) * | 2014-04-22 | 2014-07-16 | 桂林理工大学 | Treatment method for performing solid phase catalytic oxidation on cooking oil fume through camellia shell carbon-fenton-like reagent |
| CN103920393B (en) * | 2014-04-22 | 2016-04-06 | 桂林理工大学 | The processing method of oil-tea camellia husks charcoal-Fenton-type reagent solid catalysis oxidation kitchen fumes |
| CN112169514A (en) * | 2020-09-30 | 2021-01-05 | 佛山市顺德区金磊环保科技有限公司 | Combined type oil smoke purifier |
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Open date: 20091223 |