AT67745B - Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts. - Google Patents

Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts.

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Publication number
AT67745B
AT67745B AT67745DA AT67745B AT 67745 B AT67745 B AT 67745B AT 67745D A AT67745D A AT 67745DA AT 67745 B AT67745 B AT 67745B
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AT
Austria
Prior art keywords
oxidation
catalysts
ammonia
nitrogen oxides
preparation
Prior art date
Application number
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German (de)
Original Assignee
Basf Ag
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 Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT67745B publication Critical patent/AT67745B/en

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  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Catalysts (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Stickoxyden durch Oxydation von Ammoniak in Gegenwart von Katalysatoren. 



   Bei der Oxydation von Ammoniak zu Stickoxyden mit Sauerstoff bzw. Luft unter Verwendung von Katalysatoren der Platingruppe beobachtet man. sofern da.   s bereits   gereinigte und staubfreie Gas auf seinem Weg zum Katalysator Leitungen oder Apparatenteile, z. B. aus Eisen oder Kupfer, berührt, dass die Wirkung des Kontakts mehr oder 
 EMI1.1 
   lässt,   wenn man das   Gasgemisch   vor seinem Zutritt zum Katalysator einer erneuten mechanischen Reinigung, z. B. durch Filtration, unterwirft. Hiedurch werden, wie sich 
 EMI1.2 
 Material der Leitungen usw. an die Gase   abgegeben werden und weiche schon   in   ge-     ringen   Mengen die Wirksamkeit des Katalysators beeinträchtigen.

   Selbstredend kann man in diesem Falle auch von einer vorherigen Befreiung der Gase von staubförmigen Beimengungenabschen. 



   Man kann eine dauernd gute Wirksamkeit   im Dal1prbetricb   auf Grund obiger Erkenntnis auch in der Weise erreichen, dass man die Leitungen und Apparatentfile, welche von den Gasen auf ihrem Weg zum Katalysator berührt werden, aus solchen Metallen herstellt, welche an die Gase keine stubförmigen Teilchen abgeben. Solche Metalle sind z. B. Nickel, hochwertige Nickellegierungen und dgl. In diesem Falle ist natürlich dafür Sorge zu tragen, dass das Gasgemisch oder seine Bestandteile, vor allem die Oxydations- 
 EMI1.3 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts.



   The oxidation of ammonia to nitrogen oxides with oxygen or air using catalysts of the platinum group is observed. provided there. s already cleaned and dust-free gas on its way to the catalyst pipes or parts of the apparatus, e.g. B. made of iron or copper, that the effect of the contact more or more touches
 EMI1.1
   leaves if the gas mixture is subjected to renewed mechanical purification, e.g. B. by filtration, subjected. How to become, how to become
 EMI1.2
 Material of the pipes etc. are released into the gases and which, even in small quantities, impair the effectiveness of the catalyst.

   In this case, of course, it is also possible to remove dust-like additions from the gases beforehand.



   On the basis of the above knowledge, one can also achieve a consistently good effectiveness in testing operations by making the lines and apparatus outlets which are touched by the gases on their way to the catalyst from metals which do not give off any dust-like particles to the gases . Such metals are e.g. B. nickel, high-quality nickel alloys and the like. In this case, of course, care must be taken that the gas mixture or its components, especially the oxidation
 EMI1.3
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von Stickoxyden durch Oxydation von Ammoniak in Gegenwart von Katalysatoren, dadurch gekennzeichnet, dass man. sofern die Leitungen und Apparate aus einem Material bestehen, welches staubförmige Teilchen an die Gase abgibt, diese vor dem Zutritt zum Katalysator einer Reinigung unterwirft, oder dass man die bereits gereinigten Gase vor dem Eintritt in den Katalysator nur mit solchen Metallen in Berührung bringt, welche keine staubförmigen Verunreinigungen an sie abgeben. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts, characterized in that one. provided that the lines and apparatus are made of a material that emits dusty particles to the gases, that they are subjected to a cleaning process before entering the catalyst, or that the already cleaned gases are only brought into contact with those metals before entering the catalyst do not give them any dusty contaminants. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT67745D 1913-01-30 1913-10-30 Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts. AT67745B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE67745X 1913-01-30

Publications (1)

Publication Number Publication Date
AT67745B true AT67745B (en) 1915-01-25

Family

ID=5634066

Family Applications (1)

Application Number Title Priority Date Filing Date
AT67745D AT67745B (en) 1913-01-30 1913-10-30 Process for the preparation of nitrogen oxides by oxidation of ammonia in the presence of catalysts.

Country Status (1)

Country Link
AT (1) AT67745B (en)

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