AT28606B - Process for separating ammonia from the gases of dry distillation of coal, wood, peat and the like. like - Google Patents

Process for separating ammonia from the gases of dry distillation of coal, wood, peat and the like. like

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Publication number
AT28606B
AT28606B AT28606DA AT28606B AT 28606 B AT28606 B AT 28606B AT 28606D A AT28606D A AT 28606DA AT 28606 B AT28606 B AT 28606B
Authority
AT
Austria
Prior art keywords
gases
ammonia
peat
coal
wood
Prior art date
Application number
Other languages
German (de)
Original Assignee
Franz Brunck Fa
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
Priority claimed from DE1903167022D external-priority patent/DE167022C/de
Application filed by Franz Brunck Fa filed Critical Franz Brunck Fa
Application granted granted Critical
Publication of AT28606B publication Critical patent/AT28606B/en

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

  

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  Verfahren zur Abscheidung des Ammoniaks aus den Gasen der trockenen Destillation von Kohle, Holz, Torf u. dgl. 



   Bei der trockenen Destillation von Kohle, Holz, Torf usw. erfolgte die Gewinnung von Ammoniak und Ammoniakverbindungen aus den   Destillationsgasen bisher durch Be-     handlung der letzteren mit   Wasser oder mit Säuren. Im letzteren Falle wurde die Säure, selbst wenn sie anfänglich im konzentrierten Zustande zur Verwendung gelangt, durch den hohen Gehalt der Destillationsgase an Wasserdampf sehr rasch verdünnt, indem der Wasserdampf bei der zur Anwendung gelangenden, gewöhnlichen Temperatur sich in der Saure kondensierte. 
 EMI1.1 
 der Säure der Absorption des Ammoniaks bald hinderlich werden dürfte. 



   Die den Gegenstand der Erfindung bildende Neuerung besteht nun darin, dass die Destillationsgase in feiner Verteilung durch geeignete   konzentrierte Sauren, 7. H. Schwefel-   säure von 60  Bé., bei einer solchen Temperatur geleitet werden, dass die Ammoniaksalze sich direkt in fester Form ausscheiden. Sie werden aus der heissen Flüssigkeit in bekannter Weise ausgeschöpft und der Zulauf frischer Säure wird nach Bedarf geregelt. Die er- 
 EMI1.2 
 Erweiterung angebrachten Einleitungskammern in die Schwefelsäure eintauchen. Bei diesem Prozesse, der bei einer hohen Temperatur verläuft - die Temperatur der Säure in den 
 EMI1.3 
   dampf   in erheblicher Menge nicht kondensiert, sondern mit dem grösseren Teile des Teeres weitergeführt.

   Ein Drittel des Teeres sammelt sich als Schicht auf der   Schwefelsäure   an   nnd wird zeitweilig   abgeschöpft und abgeschoben.   Das abgeschiedene oder abgeschöpfte     schwofelsaure Ammoniak   hat einen einfachen Waschprozess durchzumachen. 
 EMI1.4 
 

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   a) Die Ammoniakaatze werden unmittelbar in fester, nahezu reiner Form gewonnen. 



  Die erheblichen Kosten für das Eindampfen der verdünnten Lösungen behufs Ausscheidung   der festen Ammoniakverbindungen fallen weg. b) Im Vergleiche mit dem zur Zeit am meisten verbreiteten Verfahren, dem Waschen mit Wasser, sind die Vorteile noch wesentlich grösser, da zum vollständigen Auswaschen des Ammoniaks aus den Gasen grosse Wassermengen erforderlich sind. Diese müssen entweder, nachdem das freie Ammoniak an Säure gebunden ist, zur Ausscheidung der Ammoniakverbindungen stark eingedampft oder mit   Kalkzusatz destilliert   werden, um das Ammoniak vollständig auszutreiben und in Saure oder Wasser aufzufangen.



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  Process for separating ammonia from the gases of dry distillation of coal, wood, peat and the like. like



   In the dry distillation of coal, wood, peat, etc., ammonia and ammonia compounds have so far been obtained from the distillation gases by treating the latter with water or acids. In the latter case the acid, even if it was initially used in a concentrated state, was very rapidly diluted by the high water vapor content of the distillation gases, in that the water vapor was condensed in the acid at the usual temperature used.
 EMI1.1
 the acid would soon become a hindrance to the absorption of the ammonia.



   The innovation forming the subject of the invention consists in the fact that the distillation gases are finely divided through suitable concentrated acids, 7. H. sulfuric acid of 60 Bé., At such a temperature that the ammonia salts are precipitated directly in solid form . They are scooped out of the hot liquid in a known manner and the supply of fresh acid is regulated as required. Which he-
 EMI1.2
 Immerse the extension chambers in the sulfuric acid. In this process, which occurs at a high temperature - the temperature of the acid in the
 EMI1.3
   Steam does not condense in considerable quantities, but is carried on with the larger part of the tar.

   A third of the tar collects as a layer on the sulfuric acid and is temporarily skimmed off and pushed off. The separated or skimmed off ammoniacal sulfuric acid has to go through a simple washing process.
 EMI1.4
 

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   a) The ammonia cats are obtained immediately in a solid, almost pure form.



  The considerable costs for the evaporation of the dilute solutions for the separation of the solid ammonia compounds are eliminated. b) In comparison with the currently most widespread process, washing with water, the advantages are even greater, since large amounts of water are required to completely wash the ammonia out of the gases. After the free ammonia is bound to acid, these must either be evaporated to eliminate the ammonia compounds or be distilled with the addition of lime to drive off the ammonia completely and collect it in acid or water.

 

Claims (1)

PATIENT-ANSPRUCH : Vorfahren zur-Abscheidung des Ammoniaks aus den von der Vorlage kommenden heissen Gasen der trockenen Destillation von Kohle, Holz, Torf u. dgl. durch Behandlung der Gase mit konzentrierter Säure, dadurch gekennzeichnet, dass die heissen Rohgase durch die konzentrierte Säure hindurchgeleitet werden, das ausgeschiedene Ammoniaksalz zeit- weise ausgeschöpft und die verbrauchte Säure durch solche von der ursprünglichen Stärke ersetzt wird. PATIENT CLAIM: Ancestors for the separation of ammonia from the hot gases coming from the template of the dry distillation of coal, wood, peat, etc. The like. By treating the gases with concentrated acid, characterized in that the hot raw gases are passed through the concentrated acid, the ammonia salt which has separated out is temporarily exhausted and the acid used is replaced by those of the original strength.
AT28606D 1903-02-04 1905-11-20 Process for separating ammonia from the gases of dry distillation of coal, wood, peat and the like. like AT28606B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1903167022D DE167022C (en) 1903-02-04

Publications (1)

Publication Number Publication Date
AT28606B true AT28606B (en) 1907-05-25

Family

ID=5686290

Family Applications (1)

Application Number Title Priority Date Filing Date
AT28606D AT28606B (en) 1903-02-04 1905-11-20 Process for separating ammonia from the gases of dry distillation of coal, wood, peat and the like. like

Country Status (1)

Country Link
AT (1) AT28606B (en)

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