DE2460784B1 - Processing residues contg carboxylate salt - from olefin hydroformylation and hydrogenation by mineral acid treatment and phase sepn. - Google Patents
Processing residues contg carboxylate salt - from olefin hydroformylation and hydrogenation by mineral acid treatment and phase sepn.Info
- Publication number
- DE2460784B1 DE2460784B1 DE19742460784 DE2460784A DE2460784B1 DE 2460784 B1 DE2460784 B1 DE 2460784B1 DE 19742460784 DE19742460784 DE 19742460784 DE 2460784 A DE2460784 A DE 2460784A DE 2460784 B1 DE2460784 B1 DE 2460784B1
- Authority
- DE
- Germany
- Prior art keywords
- residues
- residue
- alcohols
- hydroformylation
- hydrogenation
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/49—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
- C07C45/50—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/02—Preparation of carboxylic acids or their salts, halides or anhydrides from salts of carboxylic acids
Abstract
Description
Der Erfolg des erfindungsgemäßen Verfahrens ist nach den bisherigen Beobachtungen unabhängig von den Bedingungen der Hydroformylierung und der Hydrierung, so daß sich nähere Angaben hierzu erübrigen. Das gleiche gilt für die Aufarbeitung der primär anfallenden Rückstände, aus denen zunächst noch restliche Mengen an Alkoholen durch Verseifung mit Alkalilaugen gewonnen werden. Zur Be- The success of the method according to the invention is similar to the previous one Observations independent of the hydroformylation and hydrogenation conditions, so that further details are not necessary. The same applies to the work-up the primary residues from which initially still residual amounts of alcohols can be obtained by saponification with alkaline solutions. For loading
handlung des hieraus resultierenden, carbonsaure Salze enthaltenden Rückstandes verwendet man vorzugsweise Salzsäure oder Schwefelsäure. Sofern diese Säuren als Abfallsäuren verfügbar sind, wirkt sich dies naturgemäß zusätzlich kostensenkend aus.treatment of the resulting carboxylic acid salts containing The residue is preferably used hydrochloric acid or sulfuric acid. Unless this If acids are available as waste acids, this naturally has an additional cost-cutting effect the end.
Es empfiehlt sich, die Säurebehandlung unter intensiver Durchmischung und unter Normalbedingungen vorzunehmen, wobei die Temperatur infolge der Neutralisationswärme vorübergehend leicht ansteigt. Die Phasentrennung erfolgt zweckmäßigerweise bei erhöhter oder leicht erhöhter Temperatur - etwa 30 bis 700 C - da sie hierbei schneller verläuft. It is recommended that the acid treatment with intensive mixing and under normal conditions, the temperature being due to the heat of neutralization temporarily increases slightly. The phase separation is expediently carried out at increased or slightly increased temperature - about 30 to 700 C - because they do this faster runs.
Ebenso wie die Hydroformylierung und die Hydrierung kann die Rückstandsaufbereitung unschwer kontinuierlich gestaltet werden, da die Zusammensetzung des Rückstandes und der sich daraus ergebende Bedarf an Säure und Wasser im wesentlichen konstant bleiben. Schwankungen können durch einen mittels des pH-Wertes gesteuerten Regelkreis ausgeglichen werden. Just like hydroformylation and hydrogenation, residue processing can be used can easily be designed continuously, since the composition of the residue and the resulting demand for acid and water is essentially constant stay. Fluctuations can be controlled by a control circuit controlled by the pH value be balanced.
Beispiel 1 Bei der Herstellung von n- und iso-Butanol durch Hydroformylierung von Propylen in Gegenwart von Cobaltkatalysatoren und anschließende Hydrierung der zunächst entstehenden n- und iso-Butyraldehyde mit Hilfe von Nickelkontakten fielen nach der Verseifung der Butylbutyrate mit Natronlauge und der Verdampfung des Wassers pro 100 kg Reinbutanol 4,9 kg eines Rückstandes an, der im wesentlichen aus 3,0 kg Natriumbutyraten und 1,9 kg nicht-salzartigen sonstigen organischen Substanzen bestand. Example 1 In the production of n- and iso-butanol by hydroformylation of propylene in the presence of cobalt catalysts and subsequent hydrogenation of the n- and iso-butyraldehydes initially formed fell with the help of nickel contacts after saponification of the butyl butyrate with sodium hydroxide solution and evaporation of the water per 100 kg of pure butanol 4.9 kg of a residue consisting essentially of 3.0 kg sodium butyrates and 1.9 kg non-salty other organic substances duration.
Dieser Rückstand wurde unter intensiver Durchmischung mit 3 kg 400/obiger Abfallschwefelsäure versetzt, wobei sich ein pH-Wert von 2,3 einstellte. Das Gewichtsverhältnis Buttersäure zu Wasser betrug 1: 2,6. This residue was with intensive mixing with 3 kg 400 / above Waste sulfuric acid was added, a pH of 2.3 being established. The weight ratio Butyric acid to water was 1: 2.6.
Organische und wäßrige Phase wurden danach in einem beheizten (400 C) Abscheider getrennt. Die wäßrige Phase enthielt außer den anorganischen Salzen nur noch 0,70/0 der ursprünglichen organischen Substanz (also abzüglich der Kationen). Organic and aqueous phases were then in a heated (400 C) Separator separated. In addition to the inorganic salts, the aqueous phase contained only 0.70 / 0 of the original organic matter (minus the cations).
Aus der organischen Phase wurden durch Destillation 1,7 kg n-Buttersäure und 0,4 kg iso-Buttersäure gewonnen. Der Rest wurde verbrannt. 1.7 kg of n-butyric acid were obtained from the organic phase by distillation and 0.4 kg isobutyric acid obtained. The rest were burned.
Verglichen mit der herkömmlichen Rückstandsaufbereitung (Extraktion der Natriumbutyrate mit Wasser, Klärung des Wassers und Verbrennung der restlichen organischen Substanzen), deren Kosten mit 100 ovo angesetzt seien, ergab sich eine Kostensenkung um 740/0, wobei der Wert der Buttersäure noch nicht berücksichtigt wurde. Compared to conventional residue treatment (extraction the sodium butyrate with water, clarifying the water and burning the remaining organic substances), the cost of which is estimated at 100 ovo, resulted in a Cost reduction by 740/0, whereby the value of butyric acid is not yet taken into account became.
Unter sonst gleichen Bedingungen, jedoch mit 5,1 kg Wasser pro Kilogramm Buttersäure gingen 890/0 der Buttersäure in die organische Phase. Verglichen mit dem herkömmlichen Verfahren stiegen hierbei die Kosten infolge der zusätzlichen Verwendung der Schwefelsäure sogar leicht an. All other things being equal, but with 5.1 kg of water per kilogram Butyric acid went 890/0 of the butyric acid into the organic phase. Compared to the conventional method thereby increased the cost due to the additional Use of sulfuric acid even slightly.
Ebenfalls unter den Bedingungen dieses Beispiels, jedoch mit nur 0,3 kg Wasser pro Kilogramm Carbonsäure, bildete sich unter Salzabscheidung eine Emulsion, die sich selbst nach Wasserzusatz ohne längeres Erhitzen nicht mehr in ihre Phasen trennte. Also under the conditions of this example, but with only 0.3 kg of water per kilogram of carboxylic acid, a formed with salt separation Emulsion that, even after adding water, does not turn into separated their phases.
Ansäuerung auf den tieferen pH-Wert von 1,1 brachte keine Erhöhung der Buttersäureausbeute, erschwert jedoch die Abwasseraufbereitung. Ergebnislos blieb ferner die zu schwache Ansäuerung (pH 5). Acidification to the lower pH value of 1.1 did not result in an increase the butyric acid yield, however, makes wastewater treatment more difficult. Unsuccessful the acidification was too weak (pH 5).
Beispiel 2 Ein aus der Propanolherstellung durch Hydroformylierung von Äthylen und Hydrierung des Propionaldehyds stammender, bereits der Verseifung unterworfener Rückstand, der im wesentlichen je zur Hälfte aus nicht-ionischen Verbindungen und Natriumpropionat bestand, wurde analog Beispiel 1 mit 380/oiger Abfall-Salzsäure behandelt, wobei der pH-Wert auf 2,3 gestellt wurde und das Gewichtsverhältnis Propionsäure zu Wasser 1: 2,4 betrug. Example 2 One from the production of propanol by hydroformylation originating from ethylene and hydrogenation of propionaldehyde, already from saponification subject residue, essentially half of which consists of non-ionic compounds and sodium propionate existed, was analogous to Example 1 with 380% waste hydrochloric acid treated, the pH being adjusted to 2.3 and the weight ratio propionic acid to water was 1: 2.4.
Das Abwasser enthielt neben den anorganischen Salzen nur noch 0,4 O/o der ursprünglich vorhandenen Carbonsäuren. Der Großteil der Propionsäure wurde in reiner Form isoliert, so daß auch in diesem Fall die Rückstandsaufbereitung mit wesentlich weniger Kosten und geringerer Umweltbelastung verlief. In addition to the inorganic salts, the wastewater only contained 0.4 O / o of the carboxylic acids originally present. Most of the propionic acid was made isolated in pure form, so that also in this case the residue processing with significantly lower costs and lower environmental impact.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742460784 DE2460784C2 (en) | 1974-12-21 | 1974-12-21 | Process for the treatment of residues containing carboxylic acid salts from the synthesis of alcohols via the hydroformylation of ethylene or propylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742460784 DE2460784C2 (en) | 1974-12-21 | 1974-12-21 | Process for the treatment of residues containing carboxylic acid salts from the synthesis of alcohols via the hydroformylation of ethylene or propylene |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2460784B1 true DE2460784B1 (en) | 1976-04-29 |
DE2460784C2 DE2460784C2 (en) | 1976-12-16 |
Family
ID=5934205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742460784 Expired DE2460784C2 (en) | 1974-12-21 | 1974-12-21 | Process for the treatment of residues containing carboxylic acid salts from the synthesis of alcohols via the hydroformylation of ethylene or propylene |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2460784C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011120587A1 (en) * | 2011-12-08 | 2013-06-13 | Oxea Gmbh | Process for recovering aliphatic monocarboxylic acids from distillation residues |
-
1974
- 1974-12-21 DE DE19742460784 patent/DE2460784C2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011120587A1 (en) * | 2011-12-08 | 2013-06-13 | Oxea Gmbh | Process for recovering aliphatic monocarboxylic acids from distillation residues |
US9018417B2 (en) | 2011-12-08 | 2015-04-28 | Oxea Gmbh | Process for recovering aliphatic monocarboxylic acids from distillation |
Also Published As
Publication number | Publication date |
---|---|
DE2460784C2 (en) | 1976-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
8330 | Complete disclaimer |