DE699125C - Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact - Google Patents

Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact

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Publication number
DE699125C
DE699125C DE1934B0171970 DEB0171970D DE699125C DE 699125 C DE699125 C DE 699125C DE 1934B0171970 DE1934B0171970 DE 1934B0171970 DE B0171970 D DEB0171970 D DE B0171970D DE 699125 C DE699125 C DE 699125C
Authority
DE
Germany
Prior art keywords
contact
ammonia
automatic regulation
arranged close
steam boiler
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
DE1934B0171970
Other languages
German (de)
Inventor
Dr Rudolf Wendlandt
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.)
BAYERISCHE STICKSTOFF WERKE AG
Original Assignee
BAYERISCHE STICKSTOFF WERKE 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 BAYERISCHE STICKSTOFF WERKE AG filed Critical BAYERISCHE STICKSTOFF WERKE AG
Priority to DE1934B0171970 priority Critical patent/DE699125C/en
Application granted granted Critical
Publication of DE699125C publication Critical patent/DE699125C/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Chimneys And Flues (AREA)

Description

Vorrichtung zur selbsttätigen Regulierung der Kontakttemperatur bei der katalytischen Verbrennung von Ammoniak durch Kontaktkühlung mittels eines dicht nach dem Kontakt angeordneten Dampfkessels Bei der katalytischen Oxydation von Ammoniak ist es bekannt, den Ammoniak-Sauerstoff-bzw. Ammoniak-Luft-Gemischen zur Vermeidung von Explosionen und zur Regelung der Temperatur an den Kontakten vorher Wasserdampf zuzusetzen. Hierbei wird in dem. Gasweg eine Kühlflüssigkeitsschicht vor den Kontakten angeordnet, durch die das Gasgemisch hindurchperlt. Hierdurch wird auch eine .gewisse Regulierung der Kontakttemperatur erzielt. Die bekannten Verfahren erfordern einen möglichst gleichmäßigen Betrieb, da sonst die Entfernung der Kühlflüssigkeit von den Kontakten bzw. die Zulaufsgeschwindigkeit der Küldflüssigkeit nicht mehr den günstigsten Betriebsbedingungen entspricht und daher umständliche oder nur schwer durchführbare Neueinstellungen erforderlich werden.Device for automatic regulation of the contact temperature at the catalytic combustion of ammonia by contact cooling by means of a dense Steam boiler arranged after the contact In the catalytic oxidation of ammonia it is known, the ammonia-oxygen or. Ammonia-air mixtures to avoid of explosions and to regulate the temperature at the contacts, water vapor beforehand to add. Here, in the. Gas path a layer of cooling liquid in front of the contacts arranged through which the gas mixture bubbles. This also creates a certain Regulation of the contact temperature achieved. The known methods require one Operation as evenly as possible, otherwise the removal of the coolant from the contacts or the inflow speed of the cooling liquid no longer the corresponds to the most favorable operating conditions and therefore cumbersome or difficult feasible new hires are required.

Alle diese Nachteile werden durch die neue Vorrichtung zur selbsttätigen Regulierung der Kontakttemperatur unter Kontaktkühlung mittels eines im Gasweg dicht nach dem Kontakt angeordneten Dampfkessels beseitigt, bei der eine unmittelbare Verbindung des Dampfraumes des Kessels mit dem Gaszuleitungsraum vor dem Kontakt hergestellt ist. Hierdurch wird nicht nur die Reaktionswärme des Kontaktnetzes bzw. die Abgaswärme der heißen Stickoxyde ausgenutzt, sondern auch in besonders einfacher Weise eine vollständig selbsttätig wirkende Regulierung der Kontäkttemperätur erzielt, ohne daß selbst bei Änderungen der Frischgasmenge oder -zusammensetzung innerhalb der in Betracht kommenden Grenzen irgendwelche Störungen eintreten. Werden die Kontakte zu heiß, so wird eine größere Wasserdampfmenge erzeugt, die ihrerseits nach Zumischung zum Frischgas durch ihre stärkere Kühlwirkung und Verdünnung der Gase eine unzulässige Steigerung der Kontakttemperatur verhindert. Abweichungen in der Zusammensetzung des Rohgemisches, z. B. bei nicht gleichmäßigen' Betrieb, wie bei wStörungen von Regel- oder Dosierapparaten, wirken sich,bei der erfindungsgemäßen Vorrichtung nicht schädlich auf die Kontakttemperatur aus, sondern -die Steuerung der gewünschten Arbeitstemperatur erfolgt selbst bei längere Zeit anhaltenden Ungleichmäßigkeiten vollkommen selbsttätig.All of these drawbacks are made automatic by the new device Regulation of the contact temperature with contact cooling by means of a tight in the gas path after the contact arranged steam boiler eliminated, in the case of an immediate Connection of the steam space of the boiler with the gas supply space before contact is made. This not only reduces the heat of reaction of the contact network or exploited the exhaust heat of the hot nitrogen oxides, but also in a particularly simple way Way a completely automatic regulation of the contact temperature is achieved, without even changing the amount or composition of fresh gas within any disturbances occur within the limits in question. Will the contacts too hot, a larger amount of water vapor is generated, which in turn after admixture to fresh gas due to its stronger cooling effect and dilution of the gases an impermissible Prevents increase in contact temperature. Deviations in the composition of the raw mixture, e.g. B. in the case of non-uniform 'operation, as in the case of malfunctions of Control or metering devices do not have any effect on the device according to the invention harmful to the contact temperature, but -the control of the desired Working temperature occurs even with long-term unevenness completely automatic.

An Stelle der Zumischung des erzeugten Wasserdampfes zum Frischgas vor den Kontakten kann dieser auch einer im Gasweg vor den Kontakten auf Siebfläcben oder porösen Platten befindlichen Flüssigkeitsschicht zugeführt werden. Wünscht man nicht den gesamten erzeugten Dampf zur Kontaktregu-. lierung heranzuziehen, so wird bei einer Abwandlung- der Erfindung in der Verbindungsleitung zwischen Dampfraum des Kessels--, und Gaszuleitungsraum vor dem Kontakt eine Abzweigung zur Abnahme eines Teiles, des Wasserdampfes angebracht. Auch hierbei tritt die vorteilhafte selbsttätige Regulierung der Arbeitstemperatur des Kontaktes ein, prozentual sogar noch in größerem Maße als bei Rückleitung der gesamten Dampfmenge.Instead of adding the generated water vapor to the fresh gas in front of the contacts this can also be one in the gas path in front of the contacts on sieve surfaces or porous plates located liquid layer fed will. If you do not want all of the steam generated to contact regu-. lation to be used, so in a modification of the invention in the connecting line a branch between the steam space of the boiler and the gas supply space in front of the contact attached to the removal of a part of the water vapor. Here, too, the advantageous one occurs automatic regulation of the working temperature of the contact, even as a percentage even to a greater extent than with the return of the entire amount of steam.

Claims (1)

PATENTANSPRZJCH: Vorrichtung zur selbsttätigen Reguliegung der'Kontakttemperatur bei der katalytischen Verbrennung von Ammoniak durch Kontaktkühlung mittels eines dicht nach dem Kontakt angeordneten Dampfkessels, gekennzeichnet durch Anordnung einer Verbindung des Dampfraumes des Kessels mit dem Gaszuleitung sraum vor dem Kontakt, die gegebenenfalls eine Abzweigung zur Ableitung eines Teiles des Wasserdampfes aufweist.PATENT APPLICATION: Device for automatic regulation of the contact temperature in the catalytic combustion of ammonia by contact cooling by means of a steam boiler arranged close to the contact, characterized by arrangement a connection of the steam chamber of the boiler with the gas supply room before Contact, which may be a junction to divert part of the water vapor having.
DE1934B0171970 1934-09-07 1934-09-07 Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact Expired DE699125C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1934B0171970 DE699125C (en) 1934-09-07 1934-09-07 Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1934B0171970 DE699125C (en) 1934-09-07 1934-09-07 Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact

Publications (1)

Publication Number Publication Date
DE699125C true DE699125C (en) 1940-11-22

Family

ID=7006904

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1934B0171970 Expired DE699125C (en) 1934-09-07 1934-09-07 Device for the automatic regulation of the Konon ammonia by contact cooling by means of a steam boiler arranged close to the contact

Country Status (1)

Country Link
DE (1) DE699125C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921022C (en) * 1952-03-16 1954-12-06 Basf Ag Process for carrying out hydrogenation reactions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921022C (en) * 1952-03-16 1954-12-06 Basf Ag Process for carrying out hydrogenation reactions

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