GB1013618A - Improved process for recovery of adipic acid precursors - Google Patents

Improved process for recovery of adipic acid precursors

Info

Publication number
GB1013618A
GB1013618A GB36396/63A GB3639663A GB1013618A GB 1013618 A GB1013618 A GB 1013618A GB 36396/63 A GB36396/63 A GB 36396/63A GB 3639663 A GB3639663 A GB 3639663A GB 1013618 A GB1013618 A GB 1013618A
Authority
GB
United Kingdom
Prior art keywords
vessel
cyclohexane
passes
stripper
pipe
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
GB36396/63A
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.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Publication of GB1013618A publication Critical patent/GB1013618A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/313—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/48—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
    • C07C29/50—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups with molecular oxygen only
    • 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
    • C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
    • C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
    • 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
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/316—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with oxides of nitrogen or nitrogen-containing mineral acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

Abstract

<PICT:1013618/C2/1> In the manufacture of adipic acid by oxidizing cyclohexane with molecular oxygen in the liquid phase and further oxidizing the primary oxidation products so obtained, the primary oxidation products are mixed with water and then separated into an organic phase and an aqueous phase before they are further treated to produce a product suitable for further oxidation to adipic acid. The further oxidation is preferably effected in two stages with nitric acid. As shown, cyclohexane is oxidized in a vessel 2 with air supplied through a pipe 3 and the oxidation products are treated with water fed through a pipe 4. The mixture is separated in a decanter 6 into an organic layer and an aqueous layer, which pass to vessels 7, 8, respectively. The organic layer passes to a dry stripper 10, from which unoxidized cyclohexane is passed back to vessel 2 by pipe 13. The distillation residue from the dry stripper 10 passes to a wet stripper 18 to which water is supplied from a concentrator 35 (see below), and the distillate from the wet stripper is separated in decanter 14 into cyclohexane, which is returned to the vessel 2, and an aqueous layer which is sent to waste, wholly or in part, through pipe 15. The distillation residue from the wet stripper passes to the adipic acid precursor storage vessel 25. The aqueous portion of the cyclohexane oxidation produce collected in the vessel 8 passes to a concentrator 35, the distillate from which is fed to the wet stripper 18 (see above). The residue from the concentrator 35 passes to a crystallizer 27, from which the crystals pass to a filter 30, the filter cake being transferred to the vessel 25. Comparative experimental results are given. Specifications 1,013,617 and 1,013,619 are referred to.
GB36396/63A 1962-09-18 1963-09-16 Improved process for recovery of adipic acid precursors Expired GB1013618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22443462A 1962-09-18 1962-09-18

Publications (1)

Publication Number Publication Date
GB1013618A true GB1013618A (en) 1965-12-15

Family

ID=22840661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36396/63A Expired GB1013618A (en) 1962-09-18 1963-09-16 Improved process for recovery of adipic acid precursors

Country Status (8)

Country Link
JP (1) JPS5019532B1 (en)
CH (1) CH426761A (en)
DE (1) DE1468281A1 (en)
DK (1) DK114765B (en)
GB (1) GB1013618A (en)
LU (1) LU44451A1 (en)
NL (1) NL298066A (en)
SE (1) SE312331B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004043892A1 (en) * 2002-11-07 2004-05-27 E.I. Du Pont De Nemours And Company A process for the production of an aqueous solution of adipic acid, hydroxyhexanoic acid and oligomers thereof
WO2009053341A2 (en) * 2007-10-22 2009-04-30 Basf Se Method for the oxidation of cycloaliphatic alcohols, cycloaliphatic ketones, or mixtures thereof with aqueous nitric acid and treatment of the dicarboxylic acids

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352845U (en) * 1976-10-02 1978-05-06

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703331A (en) * 1953-11-06 1955-03-01 Du Pont Process for separating adipic acid precursors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004043892A1 (en) * 2002-11-07 2004-05-27 E.I. Du Pont De Nemours And Company A process for the production of an aqueous solution of adipic acid, hydroxyhexanoic acid and oligomers thereof
WO2009053341A2 (en) * 2007-10-22 2009-04-30 Basf Se Method for the oxidation of cycloaliphatic alcohols, cycloaliphatic ketones, or mixtures thereof with aqueous nitric acid and treatment of the dicarboxylic acids
WO2009053341A3 (en) * 2007-10-22 2009-09-03 Basf Se Method for the oxidation of cycloaliphatic alcohols, cycloaliphatic ketones, or mixtures thereof with aqueous nitric acid and treatment of the dicarboxylic acids

Also Published As

Publication number Publication date
DK114765B (en) 1969-08-04
NL298066A (en)
CH426761A (en) 1966-12-31
SE312331B (en) 1969-07-14
DE1468281A1 (en) 1968-12-19
JPS5019532B1 (en) 1975-07-08
LU44451A1 (en) 1964-03-17

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