DE481927C - Process for the recovery of metallic catalysts poisoned by sulfur - Google Patents

Process for the recovery of metallic catalysts poisoned by sulfur

Info

Publication number
DE481927C
DE481927C DES74554D DES0074554D DE481927C DE 481927 C DE481927 C DE 481927C DE S74554 D DES74554 D DE S74554D DE S0074554 D DES0074554 D DE S0074554D DE 481927 C DE481927 C DE 481927C
Authority
DE
Germany
Prior art keywords
recovery
sulfur
temperature
metallic catalysts
catalyst
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
DES74554D
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.)
GEWERKSCHAFT KOHLENBENZIN
Original Assignee
GEWERKSCHAFT KOHLENBENZIN
Publication date
Priority to DES74554D priority Critical patent/DE481927C/en
Application granted granted Critical
Publication of DE481927C publication Critical patent/DE481927C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00Obtaining nickel or cobalt
    • C22B23/04Obtaining nickel or cobalt by wet processes
    • C22B23/0453Treatment or purification of solutions, e.g. obtained by leaching
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00Obtaining nickel or cobalt
    • C22B23/02Obtaining nickel or cobalt by dry processes
    • C22B23/026Obtaining nickel or cobalt by dry processes from spent catalysts
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/16Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
    • C22B3/1608Leaching with acyclic or carbocyclic agents
    • C22B3/1616Leaching with acyclic or carbocyclic agents of a single type
    • C22B3/165Leaching with acyclic or carbocyclic agents of a single type with organic acids
    • 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
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Wiedergewinnung durch. Schwefel vergifteter metallischer Katalysatoren Die vorliegende Erfindung hat ein Verfahren zur Wiedergewinnung metallischer; durch Schwefel vergifteter Katalysatoren zum Gegenstand. Das Verfahren eignet sich besonders für Fälle, in denen die aus Metallen oder Oxyden bestehenden Katalysatoren im einer Anlage zur synthetischen Herstellung leichter Kohlenwasserstoffe unter Benutzung von weniger wertvollen, kohlenstoffhaltigen Substanzen, wie Braunkohle, Torf u. dgl., als Ausgangsmaterial verwendet werden.' Das Verfahren ermöglicht die vollständige Wiedergewinnung der Katalysatoren, ohne diese irgendwie handhdben oder bearbeiten zu müssen; sie bleiben unberührt in den Apparaten, in denen sie ihre katalytischen Wirkungen ausgeübt haben. Die gesamte Anlage bleibt im Zustand des normalen Betriebes, und die ganze 'Behandlung erfordert alles in allem lediglich das Drehen einiger Hähne.Procedure for recovery by. Metallic sulfur poisoned Catalysts The present invention has a process for the recovery of metallic; sulfur-poisoned catalysts. The procedure is suitable especially for cases where the catalysts made of metals or oxides in a plant for the synthetic production of light hydrocarbons Use of less valuable, carbonaceous substances, such as lignite, Peat and the like can be used as the starting material. ' The procedure enables the complete recovery of the catalysts without any handling or handling having to edit; they remain untouched in the apparatus in which they hold theirs exerted catalytic effects. The entire system remains in the state of the normal operation, and the whole 'treatment requires all in all only turning some taps.

Gemäß der Erfindung läßt man auf die vergifteten Katalysatoren in trockenem Zustande die Dämpfe einer organischen Säure, wie z. B. Essigsäure, Ameisensäure o. dgl., einwirken, und zwar bei einer Temperatur, bei der sich (unter Freiwerden des Schwefelwasserstoffes aus den Sulfiden) die entsprechenden organischen Salze bilden können.According to the invention one lets on the poisoned catalysts in dry the vapors of an organic acid, such as. B. acetic acid, formic acid o. the like., at a temperature at which (with release of the hydrogen sulfide from the sulfides) the corresponding organic salts can form.

Sobald die Entwicklung der Schwefelwasserstof£säure beendigt ist, wird die Temperatur in den Katalysationskammern, die während des Prozesses möglichst niedrig, bei etwa i oo°, gehalten wurde, von neuem auf etwa iSo° gebracht. Bei dieser Temperatur zersetzen sich die organischen Salze (Acetate, Formiate usw.), wodurch der Katalysator an Ort und Stelle regeneriert wird und dabei in trockenem und festem Zustand bleibt.As soon as the evolution of hydrogen sulfide has ceased, is the temperature in the catalytic chambers, which is possible during the process was kept low, at about 100 °, brought anew to about 50 °. At this Organic salts (acetates, formates, etc.) decompose at high temperature, causing the catalyst is regenerated on the spot and in the process in dry and solid State remains.

Das Verfahren läßt sich in folgender Weise durchführen, wobei nach diesem Beispiel Ameisensäure benutzt werden wird.The method can be carried out in the following manner, with formic acid will be used in this example.

Ein Rohr T, das einen Katalysator, beispielsweise aus Nickel, enthält, wirdvoneinem Gemisch von Öldämpfen und hydriereriden Gasen durchstrichen, die durch die Rohre C und B mit Hähnen b und c zugeleitet werden. Die Öldämpfe werden in Gegenwart des Katalysators hydriert, und man fängt die leichten Produkte in dem Behälter E auf.A pipe T containing a catalyst, for example made of nickel, is swept by a mixture of oil vapors and hydrogen chloride gases which are fed through pipes C and B with taps b and c. The oil vapors are hydrogenated in the presence of the catalyst and the light products are collected in container E.

An das Rohr T ist an dem einen Ende ein Rohr A finit Hahn a angeschlossen, das mit einem Kessel H verbunden ist. Während des Arbeitsganges sind die Hähne b und C offen, während der Hahn a geschlossen ist. Will man nun den Katalysator regenerieren, so schließt man die Hähne b und c und füllt den Kesse1H mit Ameisensäure, öffnet dann den Hahn a und bringt däs Rohr T auf eine Temperatur von ungefähr ioo°. Die Ameisensäuredämpfe, die sich aus dem Kesse1H infolge dessen Erwärmung entwickeln, gelangen in das Rohr T und führen Nickel in Nickelformiat über dadurch, d_aß der an Nickel gebundene Schwefel oder Sauerstoff ersetzt und an Wasserstoff gebunden wird, wie man am Ende F des Rohrs T durch das Vorhandensein von H,S feststellen kann. Die überschüssige Ameisensäure kondensiert in dem Kühler R und wird dann in E oder in einem anderen, nicht dargestellten Gefäß aufgefangen. Sobald die Entwicklung von H2S beendet ist, schließt man den Hahn a und bringt dann das Rohr T auf eine Temperatur von ungefähr i5o°. Bei dieser Temperatur wird nun das Nickelformiat seinerseits zersetzt, so daß fies reduziertes Nickel ergibt, und man erzielt auf diese Weise einen neuen Katalysator, der wieder zur Einwirkung bereit ist. Die hierbei ausgetriebene Ameisensäure kann in dem gleichen Gefäß aufgefangen werden, das, wie vorhin erwähnt, die überschüssige Ameisensäure aufzunehmen hat.At one end of the pipe T a pipe A finite cock a is connected, which is connected to a boiler H. During the operation the taps are b and C open while valve a is closed. If you want to regenerate the catalyst, so you close the taps b and c and fill the kettle 1H with formic acid, open it then the tap a and brings the tube T to a temperature of about 100 °. the Formic acid vapors that develop from the boiler 1H as a result of its heating, get into the tube T and lead nickel in nickel formate over thereby, the Replaced sulfur or oxygen bound to nickel and bound to hydrogen will be how to determine at the end F of the tube T by the presence of H, S. can. The excess formic acid condenses in the condenser R and is then in E or collected in another, not shown vessel. Once the development of H2S is finished, one closes the valve a and then brings the tube T to one Temperature of about 150 degrees. At this temperature, the nickel formate is in turn decomposed to give nasty reduced nickel, and thus achieved a new catalyst ready to act again. The here expelled Formic acid can be collected in the same vessel that, as mentioned earlier, which has to absorb the excess formic acid.

Claims (1)

PATENTANSPRUCH: Verfahren zur Wiedergewinnung durch Schwefel vergifteter metallischer Katalysatoren, dadurch gekennzeichnet, da.ß die organische Säure als Dampfstrom in die $atalysationsapparate nach Abkühlen des 'Katalysators auf eine Temperatur vonetwa ioo° eingeführt wird, wonach der Katalysator durch Zersetzung des vorher gebildeten organischen Salzes mittels einfacher Temperaturerhöhung an Ort und Stelle in den metallischen Zustand übergeführt wird.PATENT CLAIM: Process for the recovery of sulfur poisoned metallic catalysts, characterized in that the organic acid as Steam flow into the atalysation apparatus after the catalyst has cooled down to a Temperature of about 100 ° is introduced, after which the catalyst by decomposition of the previously formed organic salt by simply increasing the temperature Is converted into the metallic state on the spot.
DES74554D Process for the recovery of metallic catalysts poisoned by sulfur Expired DE481927C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES74554D DE481927C (en) Process for the recovery of metallic catalysts poisoned by sulfur

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DES74554D DE481927C (en) Process for the recovery of metallic catalysts poisoned by sulfur

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DE481927C true DE481927C (en) 1929-09-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491694A (en) * 1944-12-30 1949-12-20 Du Pont Process of desulfurizing spent nickel-aluminum catalysts
DE1038540B (en) * 1953-08-19 1958-09-11 Peter Spence & Sons Ltd Process for the production of cobalt oxide-molybdenum oxide carrier catalysts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491694A (en) * 1944-12-30 1949-12-20 Du Pont Process of desulfurizing spent nickel-aluminum catalysts
DE1038540B (en) * 1953-08-19 1958-09-11 Peter Spence & Sons Ltd Process for the production of cobalt oxide-molybdenum oxide carrier catalysts

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