DE392408C - Process for the production of synthetic ammonia - Google Patents

Process for the production of synthetic ammonia

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Publication number
DE392408C
DE392408C DEF51616D DEF0051616D DE392408C DE 392408 C DE392408 C DE 392408C DE F51616 D DEF51616 D DE F51616D DE F0051616 D DEF0051616 D DE F0051616D DE 392408 C DE392408 C DE 392408C
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DE
Germany
Prior art keywords
ammonia
water
gases
production
column
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
DEF51616D
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German (de)
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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
Application granted granted Critical
Publication of DE392408C publication Critical patent/DE392408C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/02Preparation, purification or separation of ammonia
    • C01C1/04Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Gewinnung von synthetischem Ammoniak. Die Erfindung betrifft ein Verfahren zur Gewinnung von synthetischem Ammoniak, bei welchem Kompre. soren verwendet werden, die mit Wasser geschmiert werden. Gemäß der Erfindung wird nun das zum Schmieren der Kompressoren dienende Wasser in der Folge zur Absorption des in de.° Synthesenkolonne aus dem komprimierten Stickstoff-Wasserstoff-Gemisch gebildeten Ammoniaks verwendet und weiterhin bei der Destillation der wässerigen Ammoniaklösung zum Zwecke der Gewinnung ,vasserfreien Ammoniaks die Wärme der au: der Synthesenkolorlne austretenden Gase nutzbar gemacht. Zweckmäßig dient hierbei die zur Abscheidung des Schinierwasserd aus den Kompressoren verwendete KOlJnrie gleichzeitig zur Absorption des in den katalysierten Gasen Enthaltenen Ammoniaks.Process for the production of synthetic ammonia. The invention relates to a process for the production of synthetic ammonia, in which Kompre. sensors that are lubricated with water can be used. According to the invention now the water used to lubricate the compressors is then used for absorption des in de. ° synthesis column from the compressed nitrogen-hydrogen mixture ammonia formed and continues to be used in the distillation of the aqueous Ammonia solution For the purpose of obtaining anhydrous ammonia, the warmth of the synthesis colors escaping gases made usable. In this case, it is expedient for the deposition to be used of the shipping water from the compressors was used by Kolinrie for absorption at the same time of the ammonia contained in the catalyzed gases.

Die zur Ausführung ;fieses Verfahrens dienende Einrichtung ist in der Zeichnung in einem Vertikalschnitt schematisch dargestellt.The institution serving to carry out this nasty procedure is in the drawing shown schematically in a vertical section.

Sie be3teht au; einem Kompress3r B, C, D, der gleichzeitig Gas und Waaäer auf sehr hohe Drucke (bis zu 5oo Atm. und darüber) komprimiert, einer Kilonne K für die Synthese, in welcher sich die komprimierten Gase beim Überleiten über einen geeigneten Katalysator teilweise in Ammoniak umwandeln, einer Absorption3kolonne F, in der die Abscheidung des gebildeten Ammoniaks stattfindet, einer Pumpe E, welche die Zirkulation der unter Druck stehenden Gase in den vorgenannten Apparaten besorgt, und schließlich einer Destilliervorrichtung 1' für die Austreibung des Ammoniaks aus der Ammoniaklösung, wobei die Wärme der au-. der Svnthe3enkolonne austretenden Gase ausgenutzt wird.She is on; a compressor B, C, D, which simultaneously compresses gas and waaäer to very high pressures (up to 500 atm. and above), one kilon K for the synthesis, in which the compressed gases are partially converted into ammonia when passing over a suitable catalyst convert, an absorption column F, in which the separation of the ammonia formed takes place, a pump E, which ensures the circulation of the pressurized gases in the aforementioned apparatus, and finally a distillation device 1 'for the expulsion of the ammonia from the ammonia solution, the Warmth of au-. the gases escaping from the Svnthe3enkolonne is exploited.

Die Wirkungsweise dieser Einrichtung ist folgende In das Gasansaugerohr 4 des Kompressors B, C, D führt man zugleich eine bestimmte Menge Wasser ein, die außer zum Schmieren des Kompressors auch zur Absorption de3 erzeugten Ammoniaks ausreicht. Hierin liegt der wesentliche Gegensatz der Erfindung zu den bekannten Arbeitsweisen, bei denen da3 Wa.;ser in die Absorptionskolonnen mittels hydraulischer Pumpen unter hohem Druck eingespritzt wird. Das Gemisch von Was per and Ga; (bestehend aus 1/i Stickstoff und :;/,s Wasserstoff) wird über die Pumpe E in die Absorptionskolonne F geleitet. Hier scheidet Sich das Wasser von den Gasen und sammelt sich auf dem Boden, während das Stickstoff-Wasserstoff-Gemisch von der Zirkulationspumpe E wieder angesaugt und auf dem in der Zeichnung angegebenen Weg in die Kolonne K zur L`berführung in Ammoniak geleitet wird. Nachdem das Gasgemisch den Katalysator passiert und sich teilweise zu Ammoniak vereinigt hat, wird es in dem Destillationsapparat P von starker Wärmeleitfähigkeit gekühlt, wobei die Wärme dieses Gasgemisches für die Erzielung wasserfreien Ammoniaks ausgenutzt wird.The mode of operation of this device is as follows: At the same time, a certain amount of water is introduced into the gas intake pipe 4 of the compressor B, C, D , which, in addition to lubricating the compressor, is also sufficient to absorb the ammonia generated. This is the essential contrast between the invention and the known modes of operation, in which the water is injected into the absorption columns by means of hydraulic pumps under high pressure. The mixture of Was per and Ga; (consisting of 1 / i nitrogen and:; /, s hydrogen) is fed into the absorption column F via the pump E. Here the water separates from the gases and collects on the floor, while the nitrogen-hydrogen mixture is sucked in again by the circulation pump E and fed into column K in the way indicated in the drawing, where it is converted into ammonia. After the gas mixture has passed the catalyst and partially combined to form ammonia, it is cooled in the still P of high thermal conductivity, the heat of this gas mixture being used to obtain anhydrous ammonia.

Die Gase gelangen dann zur Absorptionskolonne F, in die sie am Boden eintreten, wähiend von oben das Schmierwasser des Kompressors herabrieselt ; hierbei wird das in den Gasen enthaltene Ammoniak an das Was:er abgegeben. In dem Maße, wie die Konzentration des Ammoniaks in den Gasen abnimmt, sinkt auch die Konzentration des Ammoniak im Wasser, so daß man bei dem hohen Druck eine vollständige Absorption des Ammoniaks erreicht, welches sich am Boden der Kolonne ansammelt und durch eine Rohrleitung nach einem höher liegenden Gefäß S abgezapft werden kann. Die Gase, die nicht an der Reaktion teilgenommen haben, werden von der Zirkulationspumpe von neuem angesaugt und kehren in den Krei.Aauf zurü: k. Die Ammoniakflüssigkeit wird dem Pe-itillationsapparat 1', l), R zugeführt, wo durch Ausnutzung der Wärme der aus der Synthesenkolonne K austretenden Gase das Ammoniak wasserfrei gewonnen wird.The gases then reach the absorption column F, which they enter at the bottom, while the lubricating water of the compressor trickles down from above; here the ammonia contained in the gases is given off to what: it. As the concentration of ammonia in the gases decreases, so does the concentration of ammonia in the water, so that at the high pressure a complete absorption of the ammonia is achieved, which collects at the bottom of the column and through a pipeline to one The higher-lying vessel S can be tapped. The gases that did not take part in the reaction are sucked in again by the circulation pump and return to the circuit. The ammonia liquid is fed to the purification apparatus 1 ', 1), R , where the ammonia is obtained in anhydrous form by utilizing the heat of the gases emerging from the synthesis column K.

Claims (2)

PATENT-AxSPRÜCHE: i. Verfahren zur Gewinnung von synthetischem Ammoniak unter Verwendung von mit Wasser geschmierten Kompressoren, dadurch gekennzeichnet, daß das zum Schmieren der Kompressoren dienende Wasser auch zur Absorption des entstandeden Ammoniaks dient, und daß die Abtreibung der so erhaltenen wässerigen _1mmoniaklösung zum Zweck der Gewinnung wasserfreien Ammoniaks unter 'Nutzbarmachung der Wärme der aus der Synthesenkolonne austretenden Gase erfolgt. PATENT CLAIMS: i. Process for the production of synthetic ammonia using compressors lubricated with water, characterized in that that the water used to lubricate the compressors is also used to absorb the resulting water Ammonia is used, and that the abortion of the aqueous ammonia solution thus obtained for the purpose of obtaining anhydrous ammonia using the heat of the gases emerging from the synthesis column takes place. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die zur Abscheidung des Schmierwassers dienende Kolonne zugleich zur Absorption des in den katalysierten Gasen enthaltenen Ammoniaks dient.2. The method according to claim i, characterized in that the column serving to separate the lubricating water at the same time serves to absorb the ammonia contained in the catalyzed gases.
DEF51616D 1921-04-23 1922-04-22 Process for the production of synthetic ammonia Expired DE392408C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT392408X 1921-04-23

Publications (1)

Publication Number Publication Date
DE392408C true DE392408C (en) 1924-03-20

Family

ID=11246182

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF51616D Expired DE392408C (en) 1921-04-23 1922-04-22 Process for the production of synthetic ammonia

Country Status (1)

Country Link
DE (1) DE392408C (en)

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