EP0714497B1 - Verwendung eines hydrophoben filters in einem verfahren zum entfernen und oxidieren organischer bestandteile von küchendünsten - Google Patents
Verwendung eines hydrophoben filters in einem verfahren zum entfernen und oxidieren organischer bestandteile von küchendünsten Download PDFInfo
- Publication number
- EP0714497B1 EP0714497B1 EP94926872A EP94926872A EP0714497B1 EP 0714497 B1 EP0714497 B1 EP 0714497B1 EP 94926872 A EP94926872 A EP 94926872A EP 94926872 A EP94926872 A EP 94926872A EP 0714497 B1 EP0714497 B1 EP 0714497B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- organic components
- catalyst
- exhaust air
- heated
- 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.)
- Expired - Lifetime
Links
- 239000003517 fume Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 8
- 230000002209 hydrophobic effect Effects 0.000 title claims description 6
- 239000003054 catalyst Substances 0.000 claims description 32
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 230000003197 catalytic effect Effects 0.000 description 18
- 239000010457 zeolite Substances 0.000 description 17
- 238000003795 desorption Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 230000001590 oxidative effect Effects 0.000 description 8
- 229910021536 Zeolite Inorganic materials 0.000 description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 7
- 239000000470 constituent Substances 0.000 description 6
- 238000006555 catalytic reaction Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- 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
- F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
- F24C15/205—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft with means for oxidation of cooking fumes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/36—Kitchen hoods
Definitions
- the invention relates to the use of a hydrophobic filter separated from the heated catalyst in a process for removing and oxidizing organic components of kitchen fumes from an exhaust air stream by passing the Exhaust air flow through a filter so that the organic components of the Filters are adsorbed, and then desorbing the filter by applying heat outside the adsorption phase, the desorbed components the kitchen vapors are catalytically converted using a heated catalyst become.
- the device known from DE-A-23 63 820 has an assembly of one Filters and a heated catalyst through which the organic Components contaminated exhaust air is passed through after pre-filtering, the organic components alternately adsorbed by the filter and desorbed by the application of heat and afterburned catalytically.
- the disadvantage this device is that the filter has to be desorbed frequently, preferably after each suction process. Given a high percentage of The filter is despite water vapor and water droplets in kitchen vapors of an upstream grease filter is no longer receptive after a short time. In addition comes that desorbing water because of the high specific heat and heat of vaporization of water a high energy expenditure for the Heating of the filter and the catalyst is required.
- the invention is therefore based on the object, the method of the aforementioned Kind to design and develop in such a way that the energy expenditure for the desorbing and catalytic conversion of the adsorbed components Kitchen fumes is reduced.
- This task is characterized by the characteristics of the solved only claim.
- a hydrophobic filter is used. That has the advantage, that the organic components of the kitchen vapors are selectively adsorbed, but not the water vapor or water droplets contained in the kitchen vapors, so that the filter of the water, which it does not even adsorb, also does not have to be freed again.
- the filter is regenerated by supplying heat and the catalyst is only timed limited and therefore energy-saving for the catalytic oxidation of the organic Heated components. This is possible because the organic components of the kitchen vapor is not constantly subjected to catalysis, but initially adsorbed by the filter and cached and from time to time Time to be reacted on the heated catalyst, including the organic components desorbed from the filter - if it is in front of the catalytic converter - by heating become.
- the desorption phase is carried out at the latest when the filter with organic Components is saturated.
- the catalytic oxidation of the organic Components then also take place, preferably when the kitchen operation is stopped is, for example at night.
- zeolites exhibit because of their specific chemical and physical properties in a wide range A particularly high range can be modified in their manufacture Adsorption capacity, especially for gaseous substances.
- zeolites When filtering For air vents that contain kitchen vapors, zeolites are suitable that are hydrophobic Have properties and therefore selectively the organic components of kitchen fumes adsorb, but not adherent to kitchen fumes Steam.
- Zeolites can be in the form of a powder bed, a bed of granules or a monolithic body.
- zeolites Preferably be Granulate fillings are used because they are better than the powder bed Have flowability and cheaper compared to the monolithic body are to be produced.
- a special property of zeolites is their reversible adsorption capacity, i.e. she give the previously adsorbed organic components when the temperature rises again.
- the desorption temperature depends on the one hand on the characteristic Properties of the zeolite, especially its optionally modified surface properties and the nature of the adsorbed organic components yourself. Suitable desorption temperatures are in the range of 150 ° C to 300 ° C, being a higher temperature leads to an advantageous high desorption rate, however the upper limit of the desorption temperature to avoid unwanted carburizing, what the regeneration ability of the zeolite and would affect the filter.
- Zeolites or filters as described above, when heat is applied desorb the organic components again hereinafter referred to as "desorbing zeolites" or “desorbing Filter ".
- zeolites has compared to that in kitchens otherwise used, hardly desorbable adsorption filter the advantage of activated carbon or nonwoven mats, to be thermally more resilient.
- One way to modify the specific Properties of the zeolite is that Surface of the zeolites with, among other things, catalytic effective and the organic components with the addition of oxygen to provide oxidizing substances, in particular with precious metal salts.
- the catalytic effect of the zeolite and thus of the filter Heat supply activated.
- the one before adsorbing zeolite is expediently at Temperatures from 200 ° C to 900 ° C operated as a catalyst. Preferably in the range of 200 ° C to 450 ° C.
- Filters and zeolites that are the previously absorbed organic Components with the application of heat catalytically oxidize are further referred to as "oxidizing zeolites" or "oxidizing filter” called.
- the filter can be heated in a number of ways.
- the filter can be directly, in particular by means of be heated by an electric heating device.
- the filter can also be designed as a heat exchanger be, for example, according to the cross-flow principle, any waste heat to heat the filter to be able to use.
- the filter can be heated indirectly by giving him, for example, a heater is connected upstream, which heats the exhaust air flow, before entering the filter.
- the heater can, for example, in turn be operated electrically or as a heat exchanger be designed.
- the inventive method can be carried out as a filter a "desorbable filter", in particular a zeolite, is used and the catalytic Oxidation in a separate but fluidically connected and heated catalyst is carried out.
- a "desorbable filter” in particular a zeolite
- the filter is also a catalyst, as was the case with the "oxidizing zeolite” described. This reduces the number of components and the device to carry out the method can be made more compact overall become.
- the advantage of a catalyst separated from the "desorbing filter” is that the catalyst, for example, several filters during which Desorption phases can be assigned simultaneously or at different times.
- one of the Filter separate catalyst can be arranged in a branch line, which in the Adsorption phase is not flowed through, so that the catalyst in the adsorption phase is not burdened, especially not with water vapor.
- the catalyst downstream of the desorbing filter can be heated are heated directly or indirectly, the type of heating preferably is electrical.
- Heaters of a "desorbing filter” and a downstream catalyst as well as an “oxidizing filter” can be assigned by them Switching devices regardless of the assigned and the exhaust air flow generating fan are switched so that when they reach the Saturation of the filter or can be operated earlier if required.
- the heaters of the "desorbing filter” and the downstream catalyst also be designed as a common heating device or a common one Have switching device because the desorption and the catalytic oxidation in the catalyst downstream of the filter takes place almost simultaneously. By certain circuitry precautions can be ensured that the Catalyst is heated to its operating temperature immediately before the Filter is heated and the desorption is started.
- the suspend the exhaust air flow leaving the filter is advantageously realized in that the catalyst is bypassed and shut-off devices in the bypass and / or through the bypass section of the exhaust air duct are provided with the catalyst and for example are designed as controllable valves.
- the in the gaseous carrier medium after the catalytic Oxidation of the organic components stored Heat can at least partially desorb or fed to catalysis. This can happen, for example, in such a way that the heated one Exhaust air if necessary as a cross-flow heat exchanger designed filter or a heat exchanger that is upstream of the filter and the supplied to the filter Exhaust air should be heated, is supplied. It is also possible that part of the catalyst escaping and heated exhaust air in the filter entering, colder exhaust air is added to to heat them, but with a minimum oxygen content not in the exhaust air supplied to the filter may fall below, otherwise the following catalytic oxidation is incomplete.
- the device consists of a hydrophobic filter 2, a catalyst 3 and a fan 4 which generates an exhaust air flow 5, the filter 2, the catalyst 3 and the fan 4 being arranged downstream in terms of flow and connected via the exhaust air duct.
- the exhaust air duct 6 branches in front of the catalytic converter 3 into a bypass 7, which bridges the catalytic converter 3 and opens again into the exhaust air duct 6 in front of the fan 4.
- a first controllable shut-off device 8 is arranged in the bypass 7.
- a second controllable shut-off device 9 is provided in front of the catalytic converter 3.
- a heating device 10 or 11 is integrated in the filter 2 or the catalytic converter 3 and can be switched independently of one another and independently of the fan 4.
- the shut-off device 8 is open and the shut-off device 9 is closed, so that the exhaust air stream 5 is directed past the catalyst 3.
- the heating devices 10 and 11 are switched off and the filter 2 and the catalyst 3 are at a low temperature T 0 , where T 0 is less than 100 ° C.
- T 0 is less than 100 ° C.
- the organic constituents 1 located in the exhaust air stream 5 adsorb in the filter 2.
- the exhaust air purified in this way is drawn off via the bypass.
- the catalyst 3 is heated to its operating temperature T 2 (for example 350 ° C.) by means of the second electrical heating device 11.
- the second shut-off device 9 is opened and then the first shut-off device 8 is closed.
- the first heating device 10 then brings the filter 2 to its desorption temperature T 1 (for example 200 ° C.).
- T 1 for example 200 ° C.
- the organic constituents 1 released from the filter during the desorption phase (FIG. 2) are transported to the catalytic converter 3 by means of the exhaust air flow 5 via the exhaust air duct 6. There, the desorbed organic constituents 1 are directly catalytically oxidized before they leave the device via the fan 4.
- the first heating device 10 and the second heating device 11 are switched off again, the first shut-off device 8 is opened again and the second shut-off device 9 is closed again.
- the filter 2 is now in a regenerated form and, after cooling to T 0, can again adsorb new organic constituents 1 from the exhaust air stream 5.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
- Figur 1
- zeigt die Blockdarstellung einer Vorrichtung zum Entfernen und Oxidieren organischer Bestandteile 1 von Küchendünsten in der Phase der Adsorption,
- Figur 2
- zeigt die Blockdarstellung der Vorrichtung aus Figur 1 in der Phase der Desorption und Katalyse, und
- Figur 3
- zeigt die Blockdarstellung der Vorrichtung aus Figur 1 am Schluß der Desorptionsphase.
Claims (1)
- Verwendung eines hydrophoben, vom beheizten Katalysator (3) getrennten Filters (2) in einem Verfahren zum Entfernen und Oxidieren organischer Bestandteile (1) von Küchendünsten aus einem Abluftstrom (5) durch Hindurchleiten des Abluftstroms (5) durch den Filter (2), so daß die organischen Bestandteile (1) von dem Filter (2) adsorbiert werden, und anschließendes Desorbieren des Fitters durch Wärmezufuhr außerhalb der Adsorptionsphase, wobei die desorbierten Bestandteile (1) der Küchendünste mittels eines beheizten Katalysators (3) katalytisch umgesetzt werden.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4328405A DE4328405A1 (de) | 1993-08-24 | 1993-08-24 | Verfahren und Vorrichtung zum Entfernen und Oxidieren organischer Bestandteile von Küchendünsten |
| DE4328405 | 1993-08-24 | ||
| PCT/EP1994/002796 WO1995006227A1 (de) | 1993-08-24 | 1994-08-24 | Verfahren und vorrichtung zum entfernen und oxidieren organischer bestandteile von küchendünsten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0714497A1 EP0714497A1 (de) | 1996-06-05 |
| EP0714497B1 true EP0714497B1 (de) | 1999-07-28 |
Family
ID=6495873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94926872A Expired - Lifetime EP0714497B1 (de) | 1993-08-24 | 1994-08-24 | Verwendung eines hydrophoben filters in einem verfahren zum entfernen und oxidieren organischer bestandteile von küchendünsten |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5858316A (de) |
| EP (1) | EP0714497B1 (de) |
| DE (2) | DE4328405A1 (de) |
| WO (1) | WO1995006227A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19730292C1 (de) * | 1997-07-15 | 1999-03-11 | Daimler Benz Ag | Anlage zur Entfernung gasförmiger organischer Stoffe aus der Luft |
| US7094388B2 (en) * | 2000-04-21 | 2006-08-22 | Dte Energy Technologies, Inc. | Volatile organic compound abatement through a fuel cell |
| FR2886869B1 (fr) * | 2005-06-14 | 2007-08-31 | Saint Gobain Ct Recherches | Structure et filtre catalytique pour la filtration d'un gaz comprenant un ciment hydrophobe ou oleophobe |
| EP2893967A1 (de) * | 2014-01-10 | 2015-07-15 | Berbel Ablufttechnik Gmbh | Vorrichtung und Verfahren zur Beseitigung von Gerüchen |
| CN104728893A (zh) * | 2015-03-30 | 2015-06-24 | 宁波博业环保科技有限公司 | 一种厨房油烟处理系统 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2658742A (en) * | 1950-01-09 | 1953-11-10 | Harold R Suter | Catalytic fume incineration |
| GB1206829A (en) * | 1968-01-26 | 1970-09-30 | Carr Fastener Co Ltd | Means for cleaning air or gases in domestic cooking ovens |
| DE2363820C3 (de) * | 1973-12-21 | 1980-02-21 | Licentia-Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Küchendunstfiltervorrichtung |
| JPS5096178A (de) * | 1973-12-24 | 1975-07-31 | ||
| US4235220A (en) * | 1979-06-07 | 1980-11-25 | Hepner Robert J | Cooking stove exhaust air filtration system |
| DE3447481A1 (de) * | 1984-12-27 | 1986-07-03 | Küppersbusch AG, 4650 Gelsenkirchen | Bratroehre mit selbsttaetiger beseitigung von geruchs- u. verschmutzungsteilchen in der bratroehrenluft |
| DE3636250A1 (de) * | 1986-10-24 | 1988-04-28 | Josef Dr Muschawek | Verfahren und vorrichtung zur beseitigung von gasfoermigen verunreinigungen aus einem rohgas |
| DE3715598A1 (de) * | 1987-05-09 | 1988-11-24 | Licentia Gmbh | Herd mit pyrolytischer selbstreinigung des bratraumes |
| JPH0615016B2 (ja) * | 1988-09-09 | 1994-03-02 | トヨタ自動車株式会社 | 自動車排気ガス浄化装置 |
| JPH03141816A (ja) * | 1989-10-27 | 1991-06-17 | Toyota Motor Corp | 排気ガス浄化装置 |
| DE4142336A1 (de) * | 1991-12-20 | 1993-06-24 | Bosch Siemens Hausgeraete | Wrasenleitung |
-
1993
- 1993-08-24 DE DE4328405A patent/DE4328405A1/de not_active Withdrawn
-
1994
- 1994-08-24 WO PCT/EP1994/002796 patent/WO1995006227A1/de not_active Ceased
- 1994-08-24 EP EP94926872A patent/EP0714497B1/de not_active Expired - Lifetime
- 1994-08-24 US US08/596,377 patent/US5858316A/en not_active Expired - Lifetime
- 1994-08-24 DE DE59408549T patent/DE59408549D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995006227A1 (de) | 1995-03-02 |
| US5858316A (en) | 1999-01-12 |
| DE59408549D1 (de) | 1999-09-02 |
| DE4328405A1 (de) | 1995-03-02 |
| EP0714497A1 (de) | 1996-06-05 |
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