CN107715644A - A kind of oil smoke innocuity disposal system - Google Patents
A kind of oil smoke innocuity disposal system Download PDFInfo
- Publication number
- CN107715644A CN107715644A CN201710751722.4A CN201710751722A CN107715644A CN 107715644 A CN107715644 A CN 107715644A CN 201710751722 A CN201710751722 A CN 201710751722A CN 107715644 A CN107715644 A CN 107715644A
- Authority
- CN
- China
- Prior art keywords
- oil smoke
- module
- photodissociation
- disposal system
- ultraviolet lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/007—Separation 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/02—Separation 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 adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation 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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2057—Removing cooking fumes using a cleaning liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Abstract
A kind of oil smoke innocuity disposal system, including pretreatment module, photodissociation module and filtering module, pretreatment module connects photodissociation module, photodissociation module connects filtering module, pretreatment module includes atomizer and liquid waste collector, atomizer connects aqueduct, liquid waste collector connection blow-off line；Photodissociation module includes ultraviolet lamp；Filtering module includes filter screen and active carbon filter core；Pretreatment module is connected with oil smoke entrance, and filtering module is connected with oil smoke outlet, and oil smoke exit is provided with turbofan, and act on extraction oil smoke by turbofan is handled into the system.The present invention realizes the harmless treatment of soot gas, and the gas after processing meets discharge standard, advantageously reduces the content of haze in air.In addition, the present invention can be arranged at each big chop house, hotel etc., and be mountable to the gas flue exit of residential building, oil smoke caused by everyday home culinary art is handled, had wide range of applications.
Description
Technical field
The invention belongs to environment protection treatment field, is related to the processing of oil smoke, specially a kind of oil smoke innocuity disposal system.
Background technology
In recent years, each metropolitan haze getting worse, daily life culinary art is greatly just derived from wherein having
In caused oil smoke.In addition to the daily culinary art of family, it is each that the source of city oil smoke also has a large portion to come from
Big chop house, dining room and hotel, and often this part oil smoke is all directly discharged into air without any processing, turns into a weight
The air oil smoke source wanted.Therefore, how effectively caused oil smoke during this to be handled, had become at present urgently
One of solve the problems, such as.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of oil smoke innocuity disposal system.
The present invention is achieved by the following technical programs.
A kind of oil smoke innocuity disposal system provided by the invention, including pretreatment module, photodissociation module and filtering module,
Pretreatment module connect photodissociation module, photodissociation module connection filtering module, oil smoke successively by pretreatment module, photodissociation module and
Filtering module is handled, and pretreatment module includes atomizer and liquid waste collector, atomizer connection aqueduct, waste liquid
Collector connects blow-off line, and atomizer is located at the upper end of liquid waste collector, the downward water spray of atomizer, and water smoke passes through
Waste liquid is formed after oil smoke and enters liquid waste collector；Photodissociation module includes ultraviolet lamp；Filtering module includes filter screen and activated carbon
Filter core, filter screen are placed in active carbon filter core front end, and soot gas enter active carbon filter core after strainer filtering；Pretreatment module with
Oil smoke entrance is connected, and filtering module is connected with oil smoke outlet, and oil smoke exit is provided with air exhauster, is taken out by turbofan effect
Oil smoke is taken to be handled into the system.
The photodissociation module also includes air deflector, and air deflector is arranged at ultraviolet lamp front end, and oil smoke is by pretreatment mould
Enter air deflector after block processing, air deflector carries out water conservancy diversion to the oil smoke by pretreatment module processing.
The photodissociation module also includes cowling panel, and cowling panel is arranged at ultraviolet lamp rear end, is L-type metallic plate, to warp
The oil smoke for crossing the processing of ultraviolet lamp carries out rectification.
The filter screen is honeycomb metal filter screen, pore size 0.5-1mm.
Also porch is arranged at including a pumping blower fan.
The ultraviolet lamp is UV-C ultraviolet lamps.
4-8 ultraviolet lamp is uniformly distributed in the photodissociation module.
The system also includes a power supply, is ultraviolet lamp, pumping blower fan and air exhauster power supply.
The beneficial effects of the present invention are：The present invention is first pre-processed using water smoke to cooking fume, is gone in fume eliminating
Bulky grain suspension and dust etc., reuse ultraviolet lamp and fume molecules are handled, harmful fume molecules are decomposed
For harmless gas, finally filtered by filter screen and active carbon filter core, be finally discharged into again in air again, realize cooking fume
The harmless treatment of body, the gas after processing meet discharge standard, advantageously reduce the content of haze in air.In addition, this hair
It is bright to be arranged at each big chop house, hotel etc., and the gas flue exit of residential building is mountable to, everyday home is cooked
Oil smoke caused by preparing food is handled, and is had wide range of applications.
Brief description of the drawings
The system that Fig. 1 is the present invention forms schematic diagram.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
As shown in figure 1, a kind of oil smoke innocuity disposal system, including pretreatment module, photodissociation module and filtering module, in advance
Processing module connects photodissociation module, photodissociation module connection filtering module, and oil smoke passes through pretreatment module, photodissociation module and mistake successively
Filter module is handled, and pretreatment module includes atomizer and liquid waste collector, atomizer connection aqueduct, and waste liquid is received
Storage connects blow-off line, and atomizer is located at the upper end of liquid waste collector, the downward water spray of atomizer, and water smoke passes through oil
Waste liquid is formed after cigarette and enters liquid waste collector；Photodissociation module includes ultraviolet lamp；Filtering module includes filter screen and active carbon filtration
Core, filter screen are placed in active carbon filter core front end, and soot gas enter active carbon filter core after strainer filtering；Pretreatment module and oil
Cigarette entrance is connected, and filtering module is connected with oil smoke outlet, and oil smoke exit is provided with air exhauster, is acted on and extracted by turbofan
Oil smoke is handled into the system.
The photodissociation module also includes air deflector, and air deflector is arranged at ultraviolet lamp front end, and oil smoke is by pretreatment mould
Enter air deflector after block processing, air deflector carries out water conservancy diversion to the oil smoke by pretreatment module processing.Air deflector is funnel-form knot
Structure, soot gas enter at funnel osculum, are flowed out at big mouth, because soot gas are in disturbance state after water smoke is handled,
Increase air deflector and water conservancy diversion is carried out to the cooking fume by pretreatment, the soot gas that can make to handle by water smoke obtain preferable
Flow stability, it is easy to ultraviolet lamp to carry out photodissociation differentiation to it.
The photodissociation module also includes cowling panel, and cowling panel is arranged at ultraviolet lamp rear end, is L-type metallic plate, to warp
The oil smoke for crossing the processing of ultraviolet lamp carries out rectification.When cowling panel is set with oil smoke airflow direction in vertical direction, oil smoke is delayed
The flowing velocity of gas, rectification is carried out to cooking fume stream, fully contacted when facilitating access for filter screen with filter screen, obtain preferably filtering
Effect.
Pumping blower fan is provided with oil smoke porch.By setting pumping blower fan in system entrance, can preferably ensure
Soot gas uniformly enter, and ensure that the flowing velocity of soot gas in the system of the present invention keeps stable.
The ultraviolet lamp is UV-C ultraviolet lamps.Because the ultraviolet of UV-C wave bands is killed in all band ultraviolets
Bacterium disinfecting power is most strong, also has great destructiveness to the organic molecule similar to oil smoke, therefore use UV-C line ultraviolets
Light lamp is irradiated to oil smoke, is not only able to kill bacterium therein, moreover it is possible to makes the quilt within the section time of the oil gas molecule in oil smoke
Innocuous gas is decomposed into, and common ultraviolet lamp then needs longer irradiation time and bigger intensity of illumination to reach
Arrive.
4-8 ultraviolet lamp is uniformly distributed in the photodissociation module.Set in the air intake duct of lampblack absorber multiple ultraviolet
Linear light lamp is simultaneously evenly arranged, and can make oil smoke bigger ultraviolet irradiation time of acquisition when carrying out photodissociation, beneficial to oily in oil smoke
The decomposition of qi leel and the elimination of harmful mushroom.The quantity of ultraviolet lamp is arranged to 4-8, and it at most can be photodissociation module to cross
Excessively complicated, setting difficulty of the increase present invention in routine use is formed, if what is set is very few, is difficult to reach and passes through photodissociation
Break up the effect of fume molecules.
The filter screen is honeycomb metal filter screen, pore size 0.5-1mm.Because metallic surface temperature is often relatively low,
Using the filter screen of metal material, the caused moisture in photolysis step can be preferably set to be condensed on filter screen, and aperture is set
In 0.5-1mm, the contact area of filter screen soot gas can be increased, if what is set is too small, cooking fume can be made to pass through filter screen
Speed per hour is spent slowly, reduces purification efficiency, if what is set is excessive, the filter effect of soot gas can have a greatly reduced quality, and can not remove
The moisture in soot gas after photodissociation.
The system also includes a power supply, is ultraviolet lamp, pumping blower fan and air exhauster power supply.
During work, by the rotation of turbofan, pending soot gas are pumped into pretreatment module, atomizer will
Sprayed after water atomization in aqueduct, bulky grain dust and oil gas particle filtering contained in oil smoke are fallen, form waste liquid
Blow-off line is discharged into, then, the air deflector that soot gas enter in photodissociation module, by the processing of air deflector, ultraviolet lamp
Photodissociation processing is carried out to cooking fume, by the processing of ultraviolet, fume molecules are broken down into the nothings such as harmless water and carbon dioxide
Evil gas, filtered after cowling panel carries out rectification to gas into filter screen, at filter screen, most vapour molecule quilt
Filter out, finally enter active carbon filter core and further filtered, eventually form completely harmless gas and be discharged into air.
The present invention is first pre-processed using water smoke to cooking fume, bulky grain suspension and dust gone in fume eliminating etc.,
Reuse ultraviolet lamp to handle fume molecules, harmful fume molecules are decomposed into harmless gas, finally led to again
Screen pack and active carbon filter core are filtered, and are finally discharged into again in air, the harmless treatment of soot gas are realized, after processing
Gas meet discharge standard, advantageously reduce the content of haze in air.In addition, the present invention can be arranged at each size meal
Shop, hotel etc., and be mountable to the gas flue exit of residential building, to caused by everyday home culinary art at oil smoke
Reason, has wide range of applications.
Claims (8)
- A kind of 1. oil smoke innocuity disposal system, it is characterised in that：Including pretreatment module, photodissociation module and filtering module, in advance Processing module connects photodissociation module, photodissociation module connection filtering module, and oil smoke passes through pretreatment module, photodissociation module and mistake successively Filter module is handled, and pretreatment module includes atomizer and liquid waste collector, atomizer connection aqueduct, and waste liquid is received Storage connects blow-off line, and atomizer is located at the upper end of liquid waste collector, the downward water spray of atomizer, and water smoke passes through oil Waste liquid is formed after cigarette and enters liquid waste collector；Photodissociation module includes ultraviolet lamp；Filtering module includes filter screen and active carbon filtration Core, filter screen are placed in active carbon filter core front end, and soot gas enter active carbon filter core after strainer filtering；Pretreatment module and oil Cigarette entrance is connected, and filtering module is connected with oil smoke outlet, and oil smoke exit is provided with air exhauster, is acted on and extracted by air exhauster Oil smoke is handled into the system.
- 2. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：The photodissociation module also includes water conservancy diversion Device, air deflector are arranged at ultraviolet lamp front end, and oil smoke enters air deflector after pretreatment module is handled, and air deflector is to passing through The oil smoke of pretreatment module processing carries out water conservancy diversion.
- 3. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：The photodissociation module also includes rectification Plate, cowling panel are arranged at ultraviolet lamp rear end, are L-type metallic plate, and rectification is carried out to the oil smoke by the processing of ultraviolet lamp.
- 4. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：The filter screen is filtered for honeycomb metal Net, pore size 0.5-1mm.
- 5. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：Also it is arranged at including a pumping blower fan Porch.
- 6. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：The ultraviolet lamp is that UV-C is ultraviolet Linear light lamp.
- 7. oil smoke innocuity disposal system as claimed in claim 1, it is characterised in that：4- is uniformly distributed in the photodissociation module 8 ultraviolet lamps.
- 8. oil smoke innocuity disposal system as claimed in claim 5, it is characterised in that：The system also includes a power supply, is Ultraviolet lamp, pumping blower fan and air exhauster power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751722.4A CN107715644A (en) | 2017-08-28 | 2017-08-28 | A kind of oil smoke innocuity disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710751722.4A CN107715644A (en) | 2017-08-28 | 2017-08-28 | A kind of oil smoke innocuity disposal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107715644A true CN107715644A (en) | 2018-02-23 |
Family
ID=61205482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710751722.4A Pending CN107715644A (en) | 2017-08-28 | 2017-08-28 | A kind of oil smoke innocuity disposal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107715644A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844113A (en) * | 2018-09-06 | 2018-11-20 | 罗建民 | A kind of fluidized bed type fume treating device and application thereof |
| CN108954788A (en) * | 2018-09-29 | 2018-12-07 | 安顺市智汇家装饰装潢有限公司 | A kind of air cleaning unit for daily life room ventilation |
| CN112403233A (en) * | 2020-10-19 | 2021-02-26 | 潘庭庭 | House house flue gas environmental protection equipment |
| CN112495121A (en) * | 2020-12-21 | 2021-03-16 | 宜宾市远宏再生能源科技开发有限公司 | Environment-friendly used oil recovery device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327400A (en) * | 2008-07-18 | 2008-12-24 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN201357051Y (en) * | 2009-02-04 | 2009-12-09 | 王挺佳 | Kitchen fume and waste gas treatment device |
| US20140050643A1 (en) * | 2010-06-23 | 2014-02-20 | Baoquan Zhang | Flur-Gas purification and reclamation system and method thereof |
| CN104048333A (en) * | 2013-03-12 | 2014-09-17 | 天津德为环保工程设备有限公司 | Kitchen lampblack purification method |
| CN204134475U (en) * | 2014-08-21 | 2015-02-04 | 上海玖富环保科技有限公司 | A kind of water curtain photocatalysis combination fume treating device |
| CN206037174U (en) * | 2016-08-22 | 2017-03-22 | 北京中科宝洁环保科技有限公司 | Catering trade oil smoke clarification plant |
| CN106861394A (en) * | 2017-03-02 | 2017-06-20 | 合肥杰通环境技术有限公司 | A kind of processing method of kitchen fume |
-
2017
- 2017-08-28 CN CN201710751722.4A patent/CN107715644A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327400A (en) * | 2008-07-18 | 2008-12-24 | 清华大学 | Method and device for removing oil mist and volatile organic matter in oil smoke |
| CN201357051Y (en) * | 2009-02-04 | 2009-12-09 | 王挺佳 | Kitchen fume and waste gas treatment device |
| US20140050643A1 (en) * | 2010-06-23 | 2014-02-20 | Baoquan Zhang | Flur-Gas purification and reclamation system and method thereof |
| CN104048333A (en) * | 2013-03-12 | 2014-09-17 | 天津德为环保工程设备有限公司 | Kitchen lampblack purification method |
| CN204134475U (en) * | 2014-08-21 | 2015-02-04 | 上海玖富环保科技有限公司 | A kind of water curtain photocatalysis combination fume treating device |
| CN206037174U (en) * | 2016-08-22 | 2017-03-22 | 北京中科宝洁环保科技有限公司 | Catering trade oil smoke clarification plant |
| CN106861394A (en) * | 2017-03-02 | 2017-06-20 | 合肥杰通环境技术有限公司 | A kind of processing method of kitchen fume |
Non-Patent Citations (3)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委: "《注册环保工程师专业考试复习教材 大气污染防治工程技术与实践上 第4版》", 31 March 2017, 中国环境出版社 * |
| 奚正平: "《烧结金属多孔材料》", 31 January 2009, 冶金工业出版社 * |
| 陈月芳: "《环境工程专业实习实践指导书》", 31 July 2017, 北京冶金工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844113A (en) * | 2018-09-06 | 2018-11-20 | 罗建民 | A kind of fluidized bed type fume treating device and application thereof |
| CN108844113B (en) * | 2018-09-06 | 2023-09-05 | 罗建民 | Fluidized bed type oil fume treatment equipment and application thereof |
| CN108954788A (en) * | 2018-09-29 | 2018-12-07 | 安顺市智汇家装饰装潢有限公司 | A kind of air cleaning unit for daily life room ventilation |
| CN112403233A (en) * | 2020-10-19 | 2021-02-26 | 潘庭庭 | House house flue gas environmental protection equipment |
| CN112495121A (en) * | 2020-12-21 | 2021-03-16 | 宜宾市远宏再生能源科技开发有限公司 | Environment-friendly used oil recovery device |
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Application publication date: 20180223 |
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