EP1085260A1 - Verdampfer - Google Patents
Verdampfer Download PDFInfo
- Publication number
- EP1085260A1 EP1085260A1 EP00118332A EP00118332A EP1085260A1 EP 1085260 A1 EP1085260 A1 EP 1085260A1 EP 00118332 A EP00118332 A EP 00118332A EP 00118332 A EP00118332 A EP 00118332A EP 1085260 A1 EP1085260 A1 EP 1085260A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporation
- liquid
- evaporation body
- evaporated
- evaporator
- 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.)
- Withdrawn
Links
- 238000001704 evaporation Methods 0.000 claims abstract description 45
- 230000008020 evaporation Effects 0.000 claims abstract description 41
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 27
- 239000000446 fuel Substances 0.000 claims description 18
- 239000007800 oxidant agent Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000002407 reforming Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01B—BOILING; BOILING APPARATUS ; EVAPORATION; EVAPORATION APPARATUS
- B01B1/00—Boiling; Boiling apparatus for physical or chemical purposes ; Evaporation in general
- B01B1/005—Evaporation for physical or chemical purposes; Evaporation apparatus therefor, e.g. evaporation of liquids for gas phase reactions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/22—Vaporising devices
Definitions
- the invention relates to a device for vaporizing Liquids according to the preamble of patent claim 1.
- DE 44 26 692 C1 is a two-stage evaporator unit known in the form of a plate heat exchanger in which Alternate plates with evaporator rooms and heat transfer rooms.
- the required heat of vaporization is transferred to the heat transfer medium using a heat transfer medium, for example a hot one Thermal oil, introduced.
- heat transfer medium for example a hot one Thermal oil, introduced.
- heat is known directly in the heat transfer medium through a catalytic Implementation of a fuel to generate.
- DE 197 20 294 C1 describes a reforming reactor known with an upstream, generic evaporator.
- the reactor comprises a surface of the reaction zone adjacent evaporation body with porous, thermally conductive Structure to provide the gas mixture to be reformed by mixing and evaporating the supplied Gas mixture components.
- an evaporator in the form of a porous, flowed over and directly catalytically heated evaporation body shows in terms of mass, volume and cost significant benefits. So you can add additional training Rooms for the provision of the necessary evaporation energy be completely dispensed with. Training as overflowing flat layer enables the integration of the Evaporator in known plate reactors.
- the porous body forms a high wettable surface that has a good Guaranteed heat input into the liquid. Because of the porous structure are the mechanical stresses that occur when evaporating less than, for example, a flat one massive sheet metal.
- the vertical arrangement of the surfaces and the introduction of the liquid to be evaporated in the upper area of the evaporation body has the advantage that gravity Distribution of the liquid to be evaporated within the Evaporation body can be used.
- the division of the Evaporation body into an upper evaporation layer and one lower heating layer has the advantage that the pores cannot fill the catalyst material with liquid, which would lead to an impairment of the function.
- the overall designated 1 device for vaporizing Liquids contains a porous, thermally conductive evaporation body 2. At least a surface 3 of the evaporation body 2 is gaseous Oxidizing agents, preferably air or oxygen, overflows. On the surface opposite surface 3 the evaporation body 2 has a gas impermeable Layer 4 on.
- the evaporation body 2 further contains catalyst material shown schematically as dots Liquid to be evaporated becomes the surface 3 of the evaporation body 2 fed. The necessary evaporation energy is caused by an exothermic reaction of a fuel with the diffusing into the evaporation body 2 Oxidizing agent on the catalyst material 5 contained therein provided.
- the fuel can be the Act liquid to be evaporated yourself. Alternatively, you can however, an additional fuel can also be supplied, and both in liquid and partially or completely in gaseous form. Since the evaporator body 2 on the Surface 3 opposite surface one has gas-impermeable layer 4, the resulting flows Gas back into the overflowing the evaporation body 2 Oxidizing agent and together with this from the Evaporator 1 removed.
- the evaporation body preferably has 2 macropores a size in the range of 0.1 to 10 microns. It can preferably by pressing catalyst material 5 into a thin one and large-area, highly compressed layer become. To the catalyst material 5 better mechanical Stability or an improved thermal conductivity to lend, the catalyst material 5 in a support structure be pressed. This is the support structure preferably a mesh-like matrix, which by mixing the catalyst material 5 with a metal powder and subsequently pressing this mixture can. The production of such a porous, catalyst material containing body is for example from the DE-A-19743673 known.
- the porous evaporation body 2 forms a high wettability Surface that has a good heat input into the liquid guaranteed. Because of the porous structure, the ones that occur mechanical stresses during evaporation less than, for example in a flat, solid sheet.
- the liquid to be evaporated can be anywhere be introduced into the evaporator 1. Alternatively it is possible the liquid already in the oxidant stream bring upstream of the evaporator 1. Preferably the liquid to be evaporated using an injection nozzle the surface 3 of the evaporation body 2 sprayed. In the Drawing only the principle of the evaporator 1 is shown. It lies in the area of professional skill, however suitable housing with supply and discharge lines for the media to provide. Furthermore, it is also possible to use several vaporization bodies 2 form a stacking arrangement as is generally from reactor technology and especially for pressed Catalyst disks from the unpublished patent application DE 198 32 625.4 of the applicant is known.
- an evaporation body 2 according to the invention Farther it is possible to use an evaporation body 2 according to the invention with other pressed catalyst layers, which are used to carry out other catalytic reactions are suitable, too to connect an entire system in the form of a plate reactor.
- Such an overall system is, for example, a gas generation system for fuel cell systems, in which a hydrogen-containing raw fuel is a hydrogen-rich one Gas is generated for use in fuel cells.
- a hydrogen-containing raw fuel is a hydrogen-rich one Gas is generated for use in fuel cells.
- high demands are made in mobile applications Relative to mass, volume, costs and dynamics. This Requirements can be met by an evaporator according to the invention to be fulfilled to an improved extent.
- the function of the evaporator 1 described can advantageously improved through the use of gravity become.
- the liquid supplied is namely the one shown in Fig. 1 arrangement shown by gravity from the surface 3 coming forth into the evaporation body 2.
- the hot and thus lighter gas that arises then flows against it of gravity towards the surface 3 and transmits already thermal energy on the inflowing Liquid.
- FIG. 3 Another preferred exemplary embodiment is shown in FIG. 3.
- the entire evaporation body 2 is not with catalyst material 5 provided, but the evaporation body 2 is divided into two layers 2a and 2b. Both layers 2a, 2b are porous.
- the adjacent to the surface 3 and Layer 2a designed as an evaporation layer has In contrast to that adjacent to the gas-impermeable layer 4
- Layer 2b has no catalyst material 5.
- Layer 2b serves here as a catalytic heating layer in which the oxidizing agent and the fuel for generating the required thermal energy is implemented. The heat is then on the one hand Heat conduction from Schuschciht 2b to the neighboring one Evaporation layer 2a transferred.
- a preferred application example for an inventive Evaporator is used in a gas generation system for mobile fuel cell systems.
- a gas generation system is, as already shown above, from a hydrogen-containing raw fuel is a hydrogen-rich gas generated for use in fuel cells.
- the evaporator 1 as the oxidant oxygen, preferably in the form of ambient air.
- hydrogenated Raw fuel is preferably methanol.
- any other fuels can also be used, in particular Hydrocarbons are used.
- Fuel can be used for the evaporator 1. That evaporated Methanol and the air emerge from the evaporator 1 and will be replaced by a partial oxidation reaction to a hydrogen-rich gas implemented.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Fuel Cell (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
- Fig. 1
- ein erstes Ausführungsbeispiel eines erfindungsgemäßen Verdampfers,
- Fig. 2
- ein zweites Ausführungsbeispiel eines erfindungsgemäßen Verdampfers unter Ausnützung der Schwerkraft, und
- Fig. 3
- ein drittes Ausführungsbeispiel eines erfindungsgemäßen Verdampfers mit einem in eine Verdampfungsschicht und eine Heizschicht aufgeteilten Verdampfungskörper zeigt.
Claims (5)
- Vorrichtung (1) zum Verdampfen von Flüssigkeiten mit einem porösen, wärmeleitfähigen Verdampfungskörper (2) ,
dadurch gekennzeichnet,
daß der Verdampfungskörper (2), welcher ein Katalysatormaterial (5) enthält, auf einer Oberfläche (3) von einem gasförmigen Oxidationsmittel überströmbar ist, daß der Verdampfungskörper (2) auf der gegenüberliegenden Oberfläche (4) gasundurchlässig ist, daß die zu verdampfende Flüssigkeit und gegebenenfalls ein zusätzliches Brennmittel über die Oberfläche (3) zum Verdampfungskörper (2) zuführbar ist, wobei die benötigte Verdampfungswärme durch eine exotherme Reaktion der Flüssigkeit oder gegebenenfalls des zusätzlichen Brennmittels mit dem gasförmigen Oxidationsmittel an dem Katalysatormaterial (5) bereitgestellt wird. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß die zu verdampfenden Flüssigkeit auf die Oberfläche (3) aufgesprüht wird. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß sich die Oberflächen (3, 4) in einer Betriebsposition in vertikaler Richtung erstrecken und daß die zu verdampfende Flüssigkeit im oberen Bereich des Verdampfungskörpers (2) auf die Oberfläche (3) aufgebracht wird, wobei die zu verdampfende Flüssigkeit aufgrund der Schwerkraft in den unteren Bereich des Verdampfungskörpers (2) strömt. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Verdampfungskörper (2) aus zwei Schichten (2a, 2b) besteht, wobei die der Oberfläche (3) benachbarte Schicht (2a) kein Katalysatormaterial (5) enthält und als Verdampfungsschicht ausgebildet ist und wobei die der gasundurchlässigen Oberfläche (4) benachbarte Schicht (2b) Katalystaormaterial (5) enthält und als katalytische Heizschicht ausgebildet ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Verdampfungskörper (2) Makroporen mit einer Größe im Bereich von 0,1 bis 10 µm aufweist.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19944184 | 1999-09-15 | ||
| DE19944184 | 1999-09-15 | ||
| DE19947923A DE19947923B4 (de) | 1999-09-15 | 1999-10-06 | Plattenreaktor eines Gaserzeugungssystems für ein Brennstoffzellensystem |
| DE19947923 | 1999-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1085260A1 true EP1085260A1 (de) | 2001-03-21 |
Family
ID=26054960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00118332A Withdrawn EP1085260A1 (de) | 1999-09-15 | 2000-08-24 | Verdampfer |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6644246B1 (de) |
| EP (1) | EP1085260A1 (de) |
| JP (1) | JP2001153469A (de) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2811589A1 (fr) * | 2000-07-11 | 2002-01-18 | Xcellsis Gmbh | Dispositif pour effectuer une reaction a catalyse sur solide |
| WO2006103998A3 (en) * | 2005-03-29 | 2007-04-26 | Casio Computer Co Ltd | Vaporizing device and liquid absorbing member |
| FR2896494A1 (fr) * | 2006-01-23 | 2007-07-27 | Renault Sas | Dispositif pour la production d'hydrogene |
| US7490580B2 (en) | 2002-07-11 | 2009-02-17 | Honda Motor Co., Ltd. | Vaporizer that vaporizes a liquid to generate vapor |
| WO2009071698A1 (de) * | 2007-12-06 | 2009-06-11 | Erk Eckrohrkessel Gmbh | Bauteil zur realisierung von wärmeübertragung und/oder technischen reaktionsführung sowie verfahren zur herstellung des bauteiles |
| DE10314483B4 (de) * | 2003-03-31 | 2010-02-25 | Forschungszentrum Jülich GmbH | Niedertemperatur-Brennstoffzelle sowie Verfahren zum Betreiben derselben |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10231883B4 (de) * | 2002-07-12 | 2008-01-17 | J. Eberspächer GmbH & Co. KG | Verdampferanordnung, insbesondere zur Erzeugung eines in einem Reformer zur Wasserstoffgewinnung zersetzbaren Kohlenwasserstoff/Mischmaterial-Gemisches |
| JP2004149402A (ja) * | 2002-10-10 | 2004-05-27 | Matsushita Electric Ind Co Ltd | 水素生成器とそれを備える燃料電池システム |
| JP5130684B2 (ja) * | 2006-09-27 | 2013-01-30 | カシオ計算機株式会社 | 反応装置及び電子機器 |
| JP4730348B2 (ja) * | 2007-07-17 | 2011-07-20 | 三菱マテリアル株式会社 | 液体浸透板および加熱気化装置 |
| US9486309B2 (en) * | 2014-04-25 | 2016-11-08 | Allergan, Inc. | Lighter weight implant |
| CN118370999B (zh) * | 2024-06-21 | 2024-09-03 | 湖南欧德环保科技有限公司 | 一种蒸发设备、智能反应催化系统及固定金属催化床 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069005A (en) * | 1976-03-16 | 1978-01-17 | Narayanaswami Palani | Method and apparatus for producing heat |
| US4089303A (en) * | 1975-06-03 | 1978-05-16 | Andre Brulfert | Boiler or vapor generator using catalytic combustion of hydrocarbons |
| US4273560A (en) * | 1978-08-30 | 1981-06-16 | Siemens Aktiengesellschaft | Method for operating combustion devices |
| US4388892A (en) * | 1981-01-26 | 1983-06-21 | Rody Marc P N | Process and apparatus for generation of steam via catalytic combustion |
| US4795618A (en) * | 1984-09-26 | 1989-01-03 | Michael Laumen | Heat exchanger |
| DE3729114A1 (de) * | 1987-09-01 | 1989-03-23 | Fraunhofer Ges Forschung | Katalytischer oxidationsreaktor fuer gasgemische |
| DE4426692C1 (de) | 1994-07-28 | 1995-09-14 | Daimler Benz Ag | Zweistufige Verdampfereinheit für einen Reaktant-Massenstrom und Verfahren zur Herstellung desselben |
| DE19720294C1 (de) | 1997-05-15 | 1998-12-10 | Dbb Fuel Cell Engines Gmbh | Reformierungsreaktor und Betriebsverfahren hierfür |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3364071A (en) * | 1963-04-10 | 1968-01-16 | Union Carbide Corp | Fuel cell with capillary supply means |
| DE1546717C3 (de) * | 1964-05-14 | 1974-06-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Elektrochemische Zelle |
| WO1984001264A1 (fr) | 1982-09-30 | 1984-04-12 | Dainippon Jochugiku Kk | Appareil de volatilisation thermique d'un agent medicinal |
| DE19743673C2 (de) | 1997-10-02 | 2002-05-08 | Xcellsis Gmbh | Vorrichtung zur Wasserstofferzeugung aus Kohlenwasserstoffen und Verfahren zur Herstellung eines Katalysators |
| DE19832625C2 (de) | 1998-07-21 | 2001-05-17 | Xcellsis Gmbh | Verfahren zur Herstellung eines Stapelreaktors und Stapelreaktor zur Wasserstofferzeugung aus Kohlenwasserstoffen |
| DE19847213C1 (de) | 1998-10-13 | 2000-02-10 | Dbb Fuel Cell Engines Gmbh | Verdampfereinheit |
-
2000
- 2000-08-24 EP EP00118332A patent/EP1085260A1/de not_active Withdrawn
- 2000-09-14 JP JP2000280779A patent/JP2001153469A/ja active Pending
- 2000-09-15 US US09/662,848 patent/US6644246B1/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089303A (en) * | 1975-06-03 | 1978-05-16 | Andre Brulfert | Boiler or vapor generator using catalytic combustion of hydrocarbons |
| US4069005A (en) * | 1976-03-16 | 1978-01-17 | Narayanaswami Palani | Method and apparatus for producing heat |
| US4273560A (en) * | 1978-08-30 | 1981-06-16 | Siemens Aktiengesellschaft | Method for operating combustion devices |
| US4388892A (en) * | 1981-01-26 | 1983-06-21 | Rody Marc P N | Process and apparatus for generation of steam via catalytic combustion |
| US4795618A (en) * | 1984-09-26 | 1989-01-03 | Michael Laumen | Heat exchanger |
| DE3729114A1 (de) * | 1987-09-01 | 1989-03-23 | Fraunhofer Ges Forschung | Katalytischer oxidationsreaktor fuer gasgemische |
| DE4426692C1 (de) | 1994-07-28 | 1995-09-14 | Daimler Benz Ag | Zweistufige Verdampfereinheit für einen Reaktant-Massenstrom und Verfahren zur Herstellung desselben |
| DE19720294C1 (de) | 1997-05-15 | 1998-12-10 | Dbb Fuel Cell Engines Gmbh | Reformierungsreaktor und Betriebsverfahren hierfür |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2811589A1 (fr) * | 2000-07-11 | 2002-01-18 | Xcellsis Gmbh | Dispositif pour effectuer une reaction a catalyse sur solide |
| US7490580B2 (en) | 2002-07-11 | 2009-02-17 | Honda Motor Co., Ltd. | Vaporizer that vaporizes a liquid to generate vapor |
| DE10314483B4 (de) * | 2003-03-31 | 2010-02-25 | Forschungszentrum Jülich GmbH | Niedertemperatur-Brennstoffzelle sowie Verfahren zum Betreiben derselben |
| WO2006103998A3 (en) * | 2005-03-29 | 2007-04-26 | Casio Computer Co Ltd | Vaporizing device and liquid absorbing member |
| US7712729B2 (en) | 2005-03-29 | 2010-05-11 | Casio Computer Co., Ltd. | Vaporizing device and liquid absorbing member |
| FR2896494A1 (fr) * | 2006-01-23 | 2007-07-27 | Renault Sas | Dispositif pour la production d'hydrogene |
| WO2009071698A1 (de) * | 2007-12-06 | 2009-06-11 | Erk Eckrohrkessel Gmbh | Bauteil zur realisierung von wärmeübertragung und/oder technischen reaktionsführung sowie verfahren zur herstellung des bauteiles |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001153469A (ja) | 2001-06-08 |
| US6644246B1 (en) | 2003-11-11 |
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