DE418322C - Process for the oxidation of nitrogen compounds - Google Patents

Process for the oxidation of nitrogen compounds

Info

Publication number
DE418322C
DE418322C DEV17774D DEV0017774D DE418322C DE 418322 C DE418322 C DE 418322C DE V17774 D DEV17774 D DE V17774D DE V0017774 D DEV0017774 D DE V0017774D DE 418322 C DE418322 C DE 418322C
Authority
DE
Germany
Prior art keywords
oxidation
nitrogen compounds
ratio
sulfuric acid
absorption
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
DEV17774D
Other languages
German (de)
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.)
Ver Chemische & Metallurgische
Original Assignee
Ver Chemische & Metallurgische
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 Ver Chemische & Metallurgische filed Critical Ver Chemische & Metallurgische
Priority to DEV17774D priority Critical patent/DE418322C/en
Application granted granted Critical
Publication of DE418322C publication Critical patent/DE418322C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00Nitrogen; Compounds thereof
    • C01B21/20Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/24Nitric oxide (NO)
    • C01B21/26Preparation by catalytic or non-catalytic oxidation of ammonia

Description

Verfahren zur Oxydation von Stickstoffverbindungen. Es ist bekannt, daß die Absorption der im Schwefelsäurebetrieb wichtien Stickstoffverbindungen in Schwefelsäure' nur dann in der für die rationelle Durchführung des Schwefelsäureprozesses notwendigen Zeit und mit wirtschaftlich entsprechenden Einrichtungen durchführbar ist, wenn die Volumina, in welchen NO und VO. im Gase vorliegen, ungefähr im Verhältnis i:i stehen. Da nun zunächst die Stickstoffverbindungen als NO vorhanden sind, so ergibt sich die Aufgabe, die Absorption dann vorzunehmen, wenn durch teilweise Oxydation des NO zu NO. ein Verhältnis N O zu NO.., von ungefähr i : i erreicht ist. Es ist ferner bekannt, daß, sobald dieses Verhältnis merklich überschritten wird, d. h. sobald NO., in überschuß vorhanden ist, der optimale Absorptionseffekt v erlorengeht. Um die NO-haltigen Gase aufzuoxydieren, bedarf es aber relativ großer Räume, was mit erheblichen Unkosten verknüpft ist.Process for the oxidation of nitrogen compounds. It is known, that the absorption of the nitrogen compounds important in sulfuric acid operation Sulfuric acid 'only in that for the rational implementation of the sulfuric acid process necessary time and feasible with economically appropriate facilities is when the volumes in which NO and VO. are present in gases, roughly in proportion i: i stand. Since the nitrogen compounds are now initially present as NO, so the task arises to undertake the absorption if by partial oxidation of NO to NO. a ratio of NO to NO .., of approximately i: i is reached. It is also known that as soon as this ratio is exceeded noticeably, i. H. as soon as NO. is available in excess, the optimal absorption effect is lost. In order to oxidize the NO-containing gases, however, relatively large spaces are required, what is associated with considerable expenses.

Es hat sich nun gezeigt, daß der zur Oxydation nötige Reaktionsraum auf ein äußerst geringes Maß herabgesetzt werden kann, wenn als Reaktionsbeschleuniger hochaktive, zweckmäßig getrocknete Kohle benutzt wird. Der Prozeß läßt sich so durchführen, daß die gesamte Gasmenge bei geeigneter Temperatur über die Kohle geführt wird oder aber auch so, daß von der zu behandelnden Gasmenge ein Teil abgezweigt und bis zur fast vollständigen Umwandlung des in diesem Gasteil vorhandenen NO in NO. der beschleunigenden Wirkung der Kohle ausgesetzt wird. Das letztere hat den Vorteil, daß man dann das NO. im gewünschten Verhältnis dem unbehandelten Gasstrom zusetzen kann, so daß dann mit Sicherheit das für die Absorption in Schwefelsäure wünschenswerte optimale Verhältnis erreicht wird.It has now been shown that the reaction space required for oxidation can be reduced to an extremely low level when used as a reaction accelerator highly active, appropriately dried coal is used. The process can be carried out that the entire amount of gas is passed over the coal at a suitable temperature or but also so that a part of the amount of gas to be treated is branched off and up to almost complete conversion of the NO present in this gas part into NO. the accelerating Effect of the coal is exposed. The latter has the advantage that you can then NO. can add the untreated gas stream in the desired ratio, so that then certainly the optimum ratio desirable for absorption in sulfuric acid is achieved.

Claims (1)

PATENT-ANsPRÜci3E: i. Verfahren zur Oxydation von NO, dadurch gekennzeichnet, daß 1N0-haltige Gase der Einwirkung hochaktiver Kohle ausgesetzt werden. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Oxydation unterbrochen wird, sobald das Verhältnis von NO zu NO@ ungefähr i : i beträgt.PATENT CLAIMS: i. Process for the oxidation of NO, characterized in that that 1N0-containing gases are exposed to the action of highly active coal. z. procedure according to claim i, characterized in that the oxidation is interrupted as soon as the ratio of NO to NO @ is approximately i: i.
DEV17774D 1922-09-16 1922-09-16 Process for the oxidation of nitrogen compounds Expired DE418322C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV17774D DE418322C (en) 1922-09-16 1922-09-16 Process for the oxidation of nitrogen compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV17774D DE418322C (en) 1922-09-16 1922-09-16 Process for the oxidation of nitrogen compounds

Publications (1)

Publication Number Publication Date
DE418322C true DE418322C (en) 1925-08-27

Family

ID=7576595

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV17774D Expired DE418322C (en) 1922-09-16 1922-09-16 Process for the oxidation of nitrogen compounds

Country Status (1)

Country Link
DE (1) DE418322C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040003B (en) * 1955-08-18 1958-10-02 Ruhrchemie Ag Process for the treatment of residual gases from nitric acid production to separate the nitrogen oxides contained therein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040003B (en) * 1955-08-18 1958-10-02 Ruhrchemie Ag Process for the treatment of residual gases from nitric acid production to separate the nitrogen oxides contained therein

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