DE3422779C2 - - Google Patents

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Publication number
DE3422779C2
DE3422779C2 DE19843422779 DE3422779A DE3422779C2 DE 3422779 C2 DE3422779 C2 DE 3422779C2 DE 19843422779 DE19843422779 DE 19843422779 DE 3422779 A DE3422779 A DE 3422779A DE 3422779 C2 DE3422779 C2 DE 3422779C2
Authority
DE
Germany
Prior art keywords
mountains
production
coal
flotation
ceramic
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
Application number
DE19843422779
Other languages
German (de)
Other versions
DE3422779A1 (en
Inventor
Heinz Dipl.-Ing. Hoelter
Heinrich Dipl.-Ing. 4390 Gladbeck De Igelbuescher
Heinrich Ing.(Grad.) 4600 Dortmund De Gresch
Heribert Dipl.-Ing. 4390 Gladbeck De Dewert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19843422779 priority Critical patent/DE3422779A1/en
Priority to DE19843446706 priority patent/DE3446706A1/en
Publication of DE3422779A1 publication Critical patent/DE3422779A1/en
Application granted granted Critical
Publication of DE3422779C2 publication Critical patent/DE3422779C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines keramischen Katalysatorträgers, insbesondere zur Her­ stellung von Katalysatoren für die Umwandlung von NOx in molekularen Stickstoff.The invention relates to a method for producing a ceramic catalyst support, in particular for the manufacture of catalysts for the conversion of NO x into molecular nitrogen.

Durch die DE-OS 26 31 875 ist ein keramischer Cordierit- Verbundkörper sowie ein Verfahren zu seiner Herstellung bekannt. Das Verfahren zur Herstellung eines derartigen Verbundkörpers ist dadurch gekennzeichnet, daß ein An­ satz aus Talk, Ton und Aluminiumhydroxid und/oder Alu­ miniumoxid in solchen Mengen hergestellt wird, daß der Ansatz eine chemische Zusammensetzung von 42-52 Gew.-% Siliciumdioxid, 34-48 Gew.-% Aluminiumoxid und 10- 18 Gew.-% Magnesiumoxid hat, daß der Ansatz weichgemacht wird, in die Gestalt eines Verbundkörpers bzw. einer Wabe bzw. eines zellenförmigen Produktes verformt wird und daß der so gebildete Verbundkörper getrocknet und gebrannt wird.DE-OS 26 31 875 is a ceramic cordierite Composite body and a method for its production known. The process for producing such Composite body is characterized in that an set of talc, clay and aluminum hydroxide and / or aluminum minium oxide is produced in such quantities that the Approach a chemical composition of 42-52 wt .-% Silicon dioxide, 34-48% by weight aluminum oxide and 10- 18 wt .-% magnesium oxide has softened the approach is in the form of a composite body or a honeycomb or a cellular product is deformed and that the composite body thus formed is dried and fired becomes.

Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, welches in einfacher und wohlfeiler Weise die Herstellung eines harten, keramischen Trägers mit einer für einen Katalysator erwünschten porösen Oberfläche er­ möglicht.The invention is based on this prior art  the task is based on a method of the aforementioned Way of creating which in a simple and inexpensive way the production of a hard, ceramic carrier with a for a catalyst desired porous surface he possible.

Erfindungsgemäß wird dies dadurch erreicht, daß gemahlene Waschberge, insbesondere Flotationsberge aus dem Stein­ kohle- und/oder Erzbergbau, durch Erhitzen auf eine Tem­ peratur von 800 bis 950 Grad C keramisiert werden.According to the invention this is achieved in that ground Wash mountains, especially flotation mountains made of stone coal and / or ore mining, by heating to a tem temperature of 800 to 950 degrees C.

Es wurde überraschend gefunden, daß Flotationsberge, die bei den Kohlewäschen im Kohlebergbau als ein Abfallpro­ dukt anfallen und deponiert werden müssen, hervorragende keramische Eigenschaften besitzen und als Trägermaterial zur Herstellung von Katalysatoren für die NOx-Abscheidung oder sonstige Aufgaben besonders geeignet sind. Auf eine Temperatur zwischen 800 und 950 Grad C erhitzt, kerami­ sieren die Flotationsberge und bilden je nach vorheri­ ger Formgebung einen harten keramischen Körper mit einer für einen Katalysator besonders geeigneten porösen Ober­ fläche.It has surprisingly been found that flotation mountains, which occur in the coal washes in coal mining as a waste product and have to be deposited, have excellent ceramic properties and are particularly suitable as a support material for the production of catalysts for NO x separation or other tasks. Heated to a temperature between 800 and 950 degrees C, the flotation peaks ceramize and, depending on the previous shape, form a hard ceramic body with a porous surface that is particularly suitable for a catalyst.

Die poröse Oberfläche des Materials kann dadurch günstiger beeinflußt oder gestaltet werden, indem den Flotations­ bergen noch zusätzlich 2-10 Gew.-% Kohlenstaub zuge­ mischt werden.The porous surface of the material can be cheaper be influenced or designed by the flotations  contain an additional 2-10% by weight of coal dust to be mixed.

Die Festigkeit bzw. Härte des Trägermaterials kann positiv durch Zugabe von 0,5-10 Gew.-% Natriummetasilikat . 5-Hy­ drat zu den Flotationsbergen beeinflußt werden.The strength or hardness of the carrier material can be positive by adding 0.5-10% by weight sodium metasilicate. 5-Hy be influenced to the flotation mountains.

Die zur Anwendung kommenden Flotationsberge enthalten in der Regel Kohlenstoff mit teilweise bis zu 2000 kcal, welcher bei der Keramisierung energetisch genutzt wird und zur Herstellung eines preisgünstigen Trägermaterials für Kata­ lysatoren beiträgt. Dies gilt in gleicher Weise auch für den zugemischten Kohlenstaub.The flotation mountains used include in the Usually carbon with up to 2000 kcal, which is used energetically in the ceramization and for Production of an inexpensive carrier material for kata contributes to the analyzer. This also applies in the same way to the mixed coal dust.

Claims (2)

1. Verfahren zur Herstellung eines keramischen Katalysator­ trägers, insbesondere zur Herstellung von Katalysatoren für die Umwandlung von NOx in molekularen Stickstoff, dadurch gekennzeichnet, daß gemahlene Waschberge, insbesondere Flotationsberge aus dem Steinkohle- und/oder Erzbergbau, durch Erhitzen auf eine Temperatur von 800 bis 950 Grad C keramisiert werden.1. A process for the production of a ceramic catalyst carrier, in particular for the production of catalysts for the conversion of NO x into molecular nitrogen, characterized in that milled washing mountains, in particular flotation mountains from hard coal and / or ore mining, by heating to a temperature of 800 can be ceramized up to 950 degrees C. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß den Waschbergen 2-10 Gew.-% Kohlenstaub und/oder 0,5-10 Gew.-% Natriummetasilikat . 5-Hydrat zugesetzt werden.2. The method according to claim 1, characterized in that that the washing mountains 2-10 wt .-% coal dust and / or 0.5-10% by weight sodium metasilicate. 5-hydrate added will.
DE19843422779 1984-06-20 1984-06-20 Use of ceramicising substrate compositions for producing catalysts Granted DE3422779A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19843422779 DE3422779A1 (en) 1984-06-20 1984-06-20 Use of ceramicising substrate compositions for producing catalysts
DE19843446706 DE3446706A1 (en) 1984-06-20 1984-12-21 Process for precipitating dust with simultaneous reduction in NOx and SO2, preferably downstream of coal-fired power stations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843422779 DE3422779A1 (en) 1984-06-20 1984-06-20 Use of ceramicising substrate compositions for producing catalysts

Publications (2)

Publication Number Publication Date
DE3422779A1 DE3422779A1 (en) 1985-12-19
DE3422779C2 true DE3422779C2 (en) 1988-10-13

Family

ID=6238747

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843422779 Granted DE3422779A1 (en) 1984-06-20 1984-06-20 Use of ceramicising substrate compositions for producing catalysts

Country Status (1)

Country Link
DE (1) DE3422779A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523356A1 (en) * 1984-11-08 1987-01-08 Hoelter Heinz Preparation of catalysts for NOx reduction, preferably downstream of fossil-fuel power stations, by ceramicising the composition with the exclusion of air
DE3440808A1 (en) * 1984-11-08 1986-05-07 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Catalyst for NOx production, preferably downstream of fossil-fuel power stations
CN110508257A (en) * 2019-08-23 2019-11-29 煤炭科学技术研究院有限公司 A kind of use in waste water treatment charcoal-porous ceramic composite adsorption filtrate and its preparation method and application

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602270B2 (en) * 1976-04-08 1985-01-21 日本碍子株式会社 Cordierite ceramic honeycomb and its manufacturing method
JPS5932180B2 (en) * 1976-11-27 1984-08-07 三井化学株式会社 Catalyst for reduction of nitrogen oxides

Also Published As

Publication number Publication date
DE3422779A1 (en) 1985-12-19

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