DE481927C - Process for the recovery of metallic catalysts poisoned by sulfur - Google Patents
Process for the recovery of metallic catalysts poisoned by sulfurInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/026—Obtaining nickel or cobalt by dry processes from spent catalysts
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/16—Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
- C22B3/1608—Leaching with acyclic or carbocyclic agents
- C22B3/1616—Leaching with acyclic or carbocyclic agents of a single type
- C22B3/165—Leaching with acyclic or carbocyclic agents of a single type with organic acids
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES74554D DE481927C (en) | Process for the recovery of metallic catalysts poisoned by sulfur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES74554D DE481927C (en) | Process for the recovery of metallic catalysts poisoned by sulfur |
Publications (1)
Publication Number | Publication Date |
---|---|
DE481927C true DE481927C (en) | 1929-09-04 |
Family
ID=7504727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES74554D Expired DE481927C (en) | Process for the recovery of metallic catalysts poisoned by sulfur |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE481927C (en) |
Cited By (2)
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 |
-
0
- DE DES74554D patent/DE481927C/en not_active Expired
Cited By (2)
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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