DE856344C - Process for the removal of carbon monoxide from gases containing olefins - Google Patents

Process for the removal of carbon monoxide from gases containing olefins

Info

Publication number
DE856344C
DE856344C DEB7537D DEB0007537D DE856344C DE 856344 C DE856344 C DE 856344C DE B7537 D DEB7537 D DE B7537D DE B0007537 D DEB0007537 D DE B0007537D DE 856344 C DE856344 C DE 856344C
Authority
DE
Germany
Prior art keywords
carbon monoxide
removal
gases containing
containing olefins
nickel
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
DEB7537D
Other languages
German (de)
Inventor
Hans Dr Haeuber
Werner Dr Hagen
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB7537D priority Critical patent/DE856344C/en
Application granted granted Critical
Publication of DE856344C publication Critical patent/DE856344C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10KPURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00Purifying combustible gases containing carbon monoxide
    • C10K1/08Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/12Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
    • C10K1/124Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors containing metal compounds other than alkali- or earth-alkali carbonates, hydroxides- or oxides- or salts of inorganic acids derived from sulfur
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00Purification; Separation; Use of additives
    • C07C7/11Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Separation By Absorption (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

Verfahren zur Entfernung von Kohlenoxyd aus olefinhaltigen Gasen Es ist bekannt, daß man Kohlenoxyd aus Gasgemischen durch Waschen mit Lösungen bestimmter .Metallsalze, insbesondere mit Kupfer-(i)-salzlösungen, entfernen kann. Die bisher verwendeten Metallsalzlösungen sind jedoch nicht für die Abtrennung von Kohlenoxyd aus olefinhaltigen Gasen geeignet, weil mit ihnen auch Olefine herausgelöst werden.Process for the removal of carbon monoxide from gases containing olefins Es it is known that carbon dioxide can be obtained from gas mixtures by washing with solutions . Can remove metal salts, especially with copper (i) salt solutions. So far However, the metal salt solutions used are not for the separation of carbon monoxide suitable from olefin-containing gases because olefins are also leached out with them.

Es wurde nun gefunden, daß man aus olefinhaltigen Gasen auch sehr geringe Spuren Kohlenoxyd entfernen kann, ohne daß in meßbarer Menge Olefine herausgelöst werden, wenn man sie mit Lösungen von Doppelcyaniden des einwertigen Nickels mit anderen Metallen, vorzugsweise solchen des Nic.kel-(i)-cyanids mit Alkalicyaniden, wäscht.It has now been found that olefin-containing gases also produce a lot can remove small traces of carbon monoxide without leaching out any measurable amount of olefins if one uses them with solutions of double cyanides of monovalent nickel other metals, preferably those of Nic.kel- (i) -cyanids with alkali cyanides, washes.

Diese Lösungen können durch Reduktion der entsprechenden Doppelcyanide des zweiwertigen Nickels hergestellt werden, wobei man zweckmäßig vor, während oder nach der Reduktion nicht oxydierend wirkende Schwermetallverbindungen zusetzt, die nichtkomplex gebundenes Cyanid zu binden vermögen, wobei als Schwermetallverbindung bevorzugt andere Nickelverbindungen als Doppelverbindungen der Nickelcyani-de verwendet werden. Schon verdünnte Lösungen der erwähnten Doppelcyani.de des einwertigen Nickels vermögen Kohlenoxyd kräftig zu absorbieren; konzentrierte Lösungen sind aber vorteilhafter, weil sie eine höhere Aufnahmefähigkeit für das Kohlenoxyd besitzen; auch mit ihnen werden keine meBbaren Mengen Olefine aus den Gasen herausgelöst.These solutions can be obtained by reducing the corresponding double cyanides of divalent nickel are produced, with one expedient before, during or heavy metal compounds which do not have an oxidizing effect are added after the reduction Able to bind non-complexly bound cyanide, being used as a heavy metal compound preferred nickel compounds other than double compounds of nickel cyanide used will. Even dilute solutions of the aforementioned Doppelcyani.de des Monovalent nickel can strongly absorb carbon monoxide; concentrated solutions but are more advantageous because they have a higher capacity for the carbon dioxide own; Even with them, no measurable amounts of olefins are released from the gases.

Auch bei sehr geringen Kohlenoxydmengen im Gas ist die' Abtrennung praktisch vollständig. Das Verfahren eignet sich deshalb besonders zur Reinigung von Gasen mit nur geringem Gehalt an Kohlenoxyd (von etwa i °/o oder weniger). Diolefine werden ebenso wie die !Monoolefine, wie z. B. Äthylen, Propylen usw., von den genannten Lösungen nicht aufgenommen. Das Kohlenoxyd wird von den genannten Lösungen bereits ibei gewöhnlichem Druck absorbiert; höhere Drücke sind aber vorzuziehen, weil hierbei ,die Absorptiohsgeschwindigkeitgrößer ist als unter gewöhnlichem Druck.,Man wäscht vorzugsweise bei gewöhnlicher Temperatur, kann aber auch bei höheren oder niedrigeren Temperaturen arbeiten. Beispiel i Durch 30o ccm einer Lösung, die im Liter 5 g einwertiges Nickel als komplexes Natriumnickel-(i)-cyanid enthält, werden stündlich unter gewöhnlichem Druck 12 1 eines Gasgemisches gedrückt, das aus etwa 30 % Äthylen und etwa 70 % Wasserstoff besteht und o,o2 % Kohlenoxyd enthält. Das gewaschene Gas enthält weniger als o,ooi % Kohlenoxyd.Even with very small amounts of carbon monoxide in the gas, the separation is practically complete. The process is therefore particularly suitable for the purification of gases with only a low content of carbon oxide (of about i% or less). Diolefins, like the monoolefins, such as B. ethylene, propylene, etc., not included in the solutions mentioned. The carbon monoxide is already absorbed by the solutions mentioned at ordinary pressure; However, higher pressures are to be preferred because here the rate of absorption is greater than under normal pressure. It is preferable to wash at normal temperature, but it is also possible to work at higher or lower temperatures. Example i Through 30o ccm of a solution containing 5 g of monovalent nickel per liter as complex sodium nickel (i) cyanide, 1 2 liters of a gas mixture consisting of about 30% ethylene and about 70% hydrogen are forced every hour under normal pressure and contains o, o2% carbon oxide. The scrubbed gas contains less than 0.01% carbon oxide.

Beispiel e Durch 41 einer in einen Autoklaven gefüllten Lösung mit 30 9 je Liter als Natriumnickel-(i)-cyanid gebundenem Nickel schickt man stündlich 6oo Normalliter eines auf 3o at komprimierten, durch thermische Spaltung von Äthan gewonnenen Spaltgases mit etwa 32 % Äthylen, das neben unverändertem Äthan noch 'Methan, Wasserstoff und o,o5 % Kohlenoxyd enthält, und aus dem in an sich bekannter Weise Acetylen entfernt worden ist. Das aus dem Autoklaven austretende Gasgemisch ist frei von Kohlenoxyd (dessen Gehalt ist geringer als o,oooi %).EXAMPLE e Through 41 of a solution filled in an autoclave with 30 9 per liter of nickel bound as sodium nickel (i) cyanide, 600 normal liters per hour of a cracked gas with about 32% ethylene, compressed to 30 atm and obtained by thermal cracking of ethane, are sent in addition to unchanged ethane, it also contains methane, hydrogen and 0.05% carbon oxide, and from which acetylene has been removed in a manner known per se. The gas mixture emerging from the autoclave is free of carbon oxide (its content is less than o, oooi%).

Claims (1)

PATENTANSPRUCH: Verfahren zur Entfernung von Kohlenoxyd aus olefinhaltigen Gasen, dadurch gekennzeichnet, daB man diese mit Lösungen von Doppelcyaniden des einwertigen Nickels, insbesondere dessen Doppelcyaniden mit Alkalien, Wäscht.PATENT CLAIM: Process for the removal of carbon monoxide from olefin-containing Gases, characterized in that they can be mixed with solutions of double cyanides of Monovalent nickel, especially its double cyanides with alkalis, washes.
DEB7537D 1942-09-24 1942-09-24 Process for the removal of carbon monoxide from gases containing olefins Expired DE856344C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB7537D DE856344C (en) 1942-09-24 1942-09-24 Process for the removal of carbon monoxide from gases containing olefins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB7537D DE856344C (en) 1942-09-24 1942-09-24 Process for the removal of carbon monoxide from gases containing olefins

Publications (1)

Publication Number Publication Date
DE856344C true DE856344C (en) 1952-11-20

Family

ID=6955441

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB7537D Expired DE856344C (en) 1942-09-24 1942-09-24 Process for the removal of carbon monoxide from gases containing olefins

Country Status (1)

Country Link
DE (1) DE856344C (en)

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