DE504722C - Process for the absorption of acetic acid from the vapors containing acetic acid from charring - Google Patents

Process for the absorption of acetic acid from the vapors containing acetic acid from charring

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Publication number
DE504722C
DE504722C DEV20948D DEV0020948D DE504722C DE 504722 C DE504722 C DE 504722C DE V20948 D DEV20948 D DE V20948D DE V0020948 D DEV0020948 D DE V0020948D DE 504722 C DE504722 C DE 504722C
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DE
Germany
Prior art keywords
acetic acid
absorption
charring
acetate solution
vapors
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
DEV20948D
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German (de)
Inventor
Eduard Loew
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.)
VER fur CHEMISCHE IND AKT GES
Original Assignee
VER fur CHEMISCHE IND AKT GES
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 VER fur CHEMISCHE IND AKT GES filed Critical VER fur CHEMISCHE IND AKT GES
Priority to DEV20948D priority Critical patent/DE504722C/en
Application granted granted Critical
Publication of DE504722C publication Critical patent/DE504722C/en
Expired legal-status Critical Current

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Description

Verfahren zur Absorption von Essigsäure aus den essigsäurehaltigen Dämpfen der Holzverkohlung Zur Bindung der Essigsäure aus den essigsäurehaltigen Dämpfen der Holzverkohlung verwendete man bisher fast ausschließlich Kalkmilch. Daneben ist auch vorgeschlagen worden, die betreffenden Dämpfe durch mit stückigem kohlensauren Kalk gefüllte Türme hindurchströmen zu lassen. Hierbei wurde auch bereits darauf hingewiesen, daß die Verwendung einer Suspension von Calciumcarbonat in Wasser zur Absorption der essigsäurehaltigen Gase gegenüber der Benutzung von festem Calciumcarbonat gewisse Vorteile biete.Process for the absorption of acetic acid from the acetic acid-containing Steaming the charring To bind the acetic acid from the acetic acid-containing ones So far, milk of lime has been used almost exclusively to steam the charring. In addition, it has also been suggested that the vapors in question through with lumpy Let carbonated lime-filled towers flow through them. This has already been done advised that the use of a suspension of calcium carbonate in water for the absorption of the gases containing acetic acid compared to the use of solid calcium carbonate offers certain advantages.

Gemäß vorliegender Erfindung wird nun eine Suspension des bei der Acetonherstellung durch Erhitzung des essigsauren Kalkes entstehenden Abfallproduktes, der sogenannten Acetonasche, zur Bindung der Essigsäure benutzt. Die Verwendung dieser Art kohlensauren Kalkes bietet besondere Vorteile. Derselbe ist nicht nur ein billiges und in der Holzverkohlungsindustrie bisher unausgenutzt gebliebenes Abfallprodukt, sondern auch ein poröser Stoff, der, mit Koksteilchen durchsetzt, spezifisch sehr leicht ist, wodurch er als Suspensionskörper in der Absorptionsflüssigkeit leicht im Schwebezustand gehalten wird. Das sonst übliche Vermahlen des kohlensauren Kalkes zu feinem Pulver kann dabei erspart bleiben. Die Asche ist ohne weiteres in der bei der Acetonfabrikation anfallenden Form, beispielsweise in erbsengroßen oder auch in größeren Stücken, verwendbar, da sie in Säuren außerordentlich leicht löslich ist.According to the present invention, a suspension of the Acetone production by heating the lime-acetic waste product, the so-called acetone ash, used to bind acetic acid. The usage this type of carbonate of lime offers particular advantages. Not only is the same a cheap one that has so far remained unused in the charring industry Waste product, but also a porous substance that, interspersed with coke particles, specifically is very light, making it as a suspension body in the absorption liquid is easily kept in suspension. The usual grinding of the carbonic acid Limescale powder that is too fine can be spared. The ashes are without further ado in the form obtained in acetone production, for example in the size of a pea or in larger pieces, as they are extremely light in acids is soluble.

Beispiel Man leitet die essigsäurehaltigen Dämpfe und Gase aus den Retorten oder Blasen der Holzverkohlung durch genügend große Behälter, die mit heißem Wasser oder mit heißer Calciumacetatlösung beschickt sind, und fügt dann Acetonasche hinzu, die gegebenenfalls durch geeignete Vorrichtungen in der Flüssigkeit in Suspension gehalten wird. Zwei solcher hintereinandergeschalteter Absorptionskessel genügen zur vollständigen Absorption der Essigsäure, wenn man für die innige Berührung und Durchmischung der Dämpfe mit der Absorptionsflüssigkeit Sorge trägt. Die vorhandenen Wasserdämpfe und die vorhandenen Dämpfe von Holzgeist und 01 kondensieren sich in der heißen Absorptionsflüssigkeit nicht, so daß es gelingt, konzentrierte reine Lösungen von Calciumacetat zu erhalten.Example The vapors and gases containing acetic acid are discharged from the Retorts or bubbles of charring through large enough containers filled with hot Water or hot calcium acetate solution, and then add acetone ash added, optionally by suitable devices in the liquid in suspension is held. Two such absorption vessels connected in series are sufficient for complete absorption of acetic acid, if one is for intimate touch and Mixing the vapors with the absorption liquid takes care. The existing Water vapors and the existing vapors from Holzgeist and 01 condense in the hot absorption liquid does not, so that it is possible to concentrate pure Obtain solutions of calcium acetate.

Füllt man die Absorptionskessel mit einer fast gesättigten, zweckmäßig heißen Calciumacetatlösung und speist dieselben kontinuierlich mit Wasseroder Holzessig oder wäßriger Calciumacetatlösung und Acetonasche nach Bedarf, so fließt aus den Absorptionskesseln kontinuierlich eine fast gesättigte Acetatlösung ab.If you fill the absorption kettle with an almost saturated, expedient hot calcium acetate solution and feeds them continuously with water or wood vinegar or aqueous calcium acetate solution and acetone ash If necessary, an almost saturated one flows continuously from the absorption kettles Acetate solution.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Absorption% von Essigsäure aus den essigsäurehaltigenDämpfen. der Holzverkohlung durch in Wasser oder einer Calciumacetatlösung suspendierten kohlensauren Kalk, dadurch gekennzeichnet, daß man die Dämpfe durch eine Suspension von Acetonasche in Wasser oder Calciumacetatlösung hindurchleitet. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß man in dem Absorptionsgefäß eine fast gesättigte, zweckmäßig heiße Calciumacetatlösung vorlegt und ständig neues Wasser oder wäßrige Acetatlösung oder Holzessig und Acetonasche in den erforderlichen Mengen zuführt.PATENT CLAIMS: i. Method of absorption% of acetic acid from the vapors containing acetic acid. charring in water or a calcium acetate solution suspended carbonate of lime, characterized in that the vapors through a suspension of acetone ash in water or calcium acetate solution passes through it. a. Process according to Claim i, characterized in that the absorption vessel an almost saturated, expediently hot calcium acetate solution and constantly new Water or aqueous acetate solution or wood vinegar and acetone ash in the required Supplies quantities.
DEV20948D 1926-02-05 1926-02-05 Process for the absorption of acetic acid from the vapors containing acetic acid from charring Expired DE504722C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV20948D DE504722C (en) 1926-02-05 1926-02-05 Process for the absorption of acetic acid from the vapors containing acetic acid from charring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV20948D DE504722C (en) 1926-02-05 1926-02-05 Process for the absorption of acetic acid from the vapors containing acetic acid from charring

Publications (1)

Publication Number Publication Date
DE504722C true DE504722C (en) 1930-08-07

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Family Applications (1)

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DEV20948D Expired DE504722C (en) 1926-02-05 1926-02-05 Process for the absorption of acetic acid from the vapors containing acetic acid from charring

Country Status (1)

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DE (1) DE504722C (en)

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