GB999836A - Improvements in or relating to the production of acrylic acid - Google Patents

Improvements in or relating to the production of acrylic acid

Info

Publication number
GB999836A
GB999836A GB19862/63A GB1986263A GB999836A GB 999836 A GB999836 A GB 999836A GB 19862/63 A GB19862/63 A GB 19862/63A GB 1986263 A GB1986263 A GB 1986263A GB 999836 A GB999836 A GB 999836A
Authority
GB
United Kingdom
Prior art keywords
acrolein
acrylic acid
aqueous acrylic
aqueous
oxidation
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
GB19862/63A
Inventor
Frederick James Bellringer
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co Ltd
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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB19862/63A priority Critical patent/GB999836A/en
Priority to FR974639A priority patent/FR1393175A/en
Publication of GB999836A publication Critical patent/GB999836A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/03—Monocarboxylic acids
    • C07C57/04—Acrylic acid; Methacrylic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/20—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms
    • C07C47/21—Unsaturated compounds having —CHO groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C47/22—Acryaldehyde; Methacryaldehyde
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation

Abstract

Acrylic acid is made by reacting acrolein with molecular oxygen at elevated temperature in the vapour phase over an oxidation catalyst to give a reactor effluent containing acrylic acid and an amount of acrolein which is between 10 and 35% by weight of the acrolein originally fed to the reactor, quenching the gaseous reactions product with water or an aqueous acrylic acid solution to condense the acrylic acid and at least some of the acrolein, fractionally distilling the aqueous acrylic acid solution thus obtained to separate an overhead fraction comprising unreacted acrolein and a base product comprising aqueous acrylic acid substantially free from acrolein, and recycling the overhead acrolein fraction to the oxidation reaction. Preferred features of the process include recovering acrolein from the residual gases from the quenching stage and recirculation to the oxidation stage, for example by scrubbing with water and distilling the resultant aqueous solution to recover acrolein as an overhead fraction, or alternatively using aqueous acrylic acid as the scrubbing medium, the use as oxidation catalyst a molybdate of bismuth, cobalt, tin, vanadium, iron, antimony, cerium, titanium, nickel or tungsten. The reaction may be carried out in the presence of a diluent gas, for example nitrogen or a mixture of steam and nitrogen. The invention is described with reference to drawings accompanying the Provisional Specification (not shown) and an example is given containing comparative data of operation within the limits set forth by the claims and outside the scope of the claim.
GB19862/63A 1963-05-18 1963-05-18 Improvements in or relating to the production of acrylic acid Expired GB999836A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB19862/63A GB999836A (en) 1963-05-18 1963-05-18 Improvements in or relating to the production of acrylic acid
FR974639A FR1393175A (en) 1963-05-18 1964-05-15 Process for the production of unsaturated aliphatic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19862/63A GB999836A (en) 1963-05-18 1963-05-18 Improvements in or relating to the production of acrylic acid

Publications (1)

Publication Number Publication Date
GB999836A true GB999836A (en) 1965-07-28

Family

ID=10136436

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19862/63A Expired GB999836A (en) 1963-05-18 1963-05-18 Improvements in or relating to the production of acrylic acid

Country Status (1)

Country Link
GB (1) GB999836A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471556A (en) * 1964-12-07 1969-10-07 Nippon Kayaku Kk Production of unsaturated aliphatic acids
US3624146A (en) * 1965-08-25 1971-11-30 Grace W R & Co Process for the production of acrylic acid from propylene
US3717675A (en) * 1966-08-09 1973-02-20 Knapsack Ag Process for isolating acrylic acid from the reaction gases obtained by the oxidation of propylene or a acrolein

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3471556A (en) * 1964-12-07 1969-10-07 Nippon Kayaku Kk Production of unsaturated aliphatic acids
US3624146A (en) * 1965-08-25 1971-11-30 Grace W R & Co Process for the production of acrylic acid from propylene
US3717675A (en) * 1966-08-09 1973-02-20 Knapsack Ag Process for isolating acrylic acid from the reaction gases obtained by the oxidation of propylene or a acrolein

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