DE513755C - Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter - Google Patents

Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter

Info

Publication number
DE513755C
DE513755C DEI30022D DEI0030022D DE513755C DE 513755 C DE513755 C DE 513755C DE I30022 D DEI30022 D DE I30022D DE I0030022 D DEI0030022 D DE I0030022D DE 513755 C DE513755 C DE 513755C
Authority
DE
Germany
Prior art keywords
recovery
organic matter
alkaline solutions
caustic alkalis
oxygen
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
DEI30022D
Other languages
German (de)
Inventor
Dr Friedrich August Henglein
Dr Friedrich Wilhelm Stauf
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI30022D priority Critical patent/DE513755C/en
Application granted granted Critical
Publication of DE513755C publication Critical patent/DE513755C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation
    • C01D1/36—Purification; Separation by oxidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Wiedergewinnung von Ätzalkalien aus mit organischer Substanz verunreinigten Alkalilaugen Es ist bekannt, daß man aus mit organischen Substanzen verunreinigten Alkalilaugen das Ätzalkali dadurch wiedergewinnen kann, daß man die Laugen unter gleichzeitiger Oxydation so weit eindickt, daß die organische Substanz sich unter Verkohlung ausscheidet und in bekannter @Veise durch Filtration oder Dekantation von der Laue getrennt ,wird.Process for the recovery of caustic alkalis from with organic Substance contaminated alkaline solutions It is known that one can get out with organic Substances contaminated with alkaline solutions which caustic alkali can thereby recover, that the lyes are thickened, with simultaneous oxidation, to such an extent that the organic Substance is precipitated with charring and in the known way by filtration or decantation is separated from the lukewarm.

Es ist weiterhin bekannt, daß man mit organischen Substanzen verunreinigte Alkalilaugen mit Oxydationsmitteln bei Anwesenheit von Katalysatoren reinigen kann, wobei man durch die Oxydation Alkalicarbonat erhält und dieses in -bekannter Weise entfernt. Die hierbei als Oxydationsmittel dienenden Substanzen sind feste Körper, die nach Abgabe ihres Sauerstoffs Rückstände hinterlassen (z. B. NaC103, welches in NaCI .übergeht, NaN03 usw.). Außerdem müssen bei diesem Verfähren zur Oxydation stets Katalysatoren (Metall oder Metallverbindungen, insbesondere Kupfer) verwendet werden.It is also known to contaminate with organic substances Can clean alkaline solutions with oxidizing agents in the presence of catalysts, whereby alkali metal carbonate is obtained by the oxidation and this in a known manner removed. The substances used as oxidizing agents are solid bodies, which leave residues after the release of their oxygen (e.g. NaC103, which converts to NaCl, NaN03, etc.). This process also requires oxidation Catalysts (metal or metal compounds, especially copper) are always used will.

Es wurde nun gefunden, daß man die Oxydation der organischen Substanzen zu Kohlensäure mit Sauerstoffgas bzw. sauerstoffhaltigen Gasen ohne Katalysatoren in höchst einfacher Weise ausführen kann, wenn man Temperaturen über ioo° und zweckmäßig Sauerstoffdrucke von über i Atm. anwendet. Dieses Verfahren hat vor den bisher bekannten den weiteren Vorteil, daß nur ein Gas zur Oxydation dient, wodurch keine neuen Verunreinigungen. wie die oben beschriebenen, in die Laue hineinkommen. Das sich bei dem neuen Verfahren bildende Alkalicarbonat (z. B. Soda) kann durch lall: in bekannter ZVeise leicht in das entsprechende Hy droxyd übergeführt «erden. Die Laugen können dabei alle möglichen Konzentrationen haben; zweckmäßig geht man jedoch nicht unter S- bis I o oEIo 1g e Lauge.It has now been found that the oxidation of organic substances to carbonic acid with oxygen gas or oxygen-containing gases without catalysts can be carried out in the most simple way, if you have temperatures above 100 ° and expediently Oxygen pressures in excess of 1 atm. applies. This method has ahead of the previously known the further advantage that only one gas is used for oxidation, which means that no new impurities are created. like those described above, get into the tepid. This is the case with the new procedure Forming alkali carbonate (e.g. soda) can easily be achieved by lall: in the known way transferred to the corresponding hydroxide. Anyone can do the lye have possible concentrations; however, it is not advisable to go under S to I o oEIo 1g e lye.

Beispiel Eine i 5 o'oige Abfallauge enthielt pro Liter i i g organischer Substanz (a- und ß-Cellulose). In einem Autoklaven wurde sie bei io Atm. Sauerstoffdruck auf i8o° erhitzt. Nach dem Versuch war die Lauge vollkommen frei von orL-anischer Substanz.EXAMPLE One 15% waste eye contained i i g of organic per liter Substance (a- and ß-cellulose). It was placed in an autoclave at 10 atm. Oxygen pressure heated to 180 °. After the experiment, the lye was completely free of organic substances Substance.

Claims (1)

PATENTANSPRUCH Verfahren zur Wiedergewinnung von Ätzallcalien aus mit organischer Substanz verunreinigten Allcalilaugen durch Behandlung der Laugen mit Sauerstoff oder sauerstoffhaltigen Gasen bei Temperaturen oberhalb ioo-, dadurch gekennzeichnet, daß ein Sauerstoffdruck von mehr als i Atm. zur Anwendung kommt, worauf das entstandene Alkalicarbonat in bekannter `V eise zweckmäßig mit Kalk iii das Hydroxyd übergeführt wird. PATENT CLAIM A process for the recovery of caustic alkalis from allcal leaches contaminated with organic matter by treating the lyes with oxygen or oxygen-containing gases at temperatures above 100, characterized in that an oxygen pressure of more than 1 atm. is used, whereupon the resulting alkali metal carbonate is converted into the hydroxide in a known way, expediently with lime iii.
DEI30022D 1927-01-15 1927-01-15 Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter Expired DE513755C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI30022D DE513755C (en) 1927-01-15 1927-01-15 Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI30022D DE513755C (en) 1927-01-15 1927-01-15 Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter

Publications (1)

Publication Number Publication Date
DE513755C true DE513755C (en) 1931-12-14

Family

ID=7187501

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI30022D Expired DE513755C (en) 1927-01-15 1927-01-15 Process for the recovery of caustic alkalis from alkaline solutions contaminated with organic matter

Country Status (1)

Country Link
DE (1) DE513755C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434626A (en) * 1945-01-22 1948-01-13 Salvo Chemical Corp Process for making vanillin
US2516827A (en) * 1945-07-09 1950-07-25 Ontario Paper Co Ltd Method of producing vanillin
DE1027501B (en) * 1953-11-12 1958-04-03 Sterling Drug Inc Process for the production of an alkaline sulphide liquor from black liquor
DE1259299B (en) * 1959-12-31 1968-01-25 Sterling Drug Inc Process for the removal of vaporous oxidizable organic substances of an acidic nature from water vapor or gas mixtures containing water vapor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434626A (en) * 1945-01-22 1948-01-13 Salvo Chemical Corp Process for making vanillin
US2516827A (en) * 1945-07-09 1950-07-25 Ontario Paper Co Ltd Method of producing vanillin
DE1027501B (en) * 1953-11-12 1958-04-03 Sterling Drug Inc Process for the production of an alkaline sulphide liquor from black liquor
DE1259299B (en) * 1959-12-31 1968-01-25 Sterling Drug Inc Process for the removal of vaporous oxidizable organic substances of an acidic nature from water vapor or gas mixtures containing water vapor

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