GB1008191A - Manufacture of benzoic acid - Google Patents

Manufacture of benzoic acid

Info

Publication number
GB1008191A
GB1008191A GB3411861A GB3411861A GB1008191A GB 1008191 A GB1008191 A GB 1008191A GB 3411861 A GB3411861 A GB 3411861A GB 3411861 A GB3411861 A GB 3411861A GB 1008191 A GB1008191 A GB 1008191A
Authority
GB
United Kingdom
Prior art keywords
benzoic acid
oxidation
liquid
oxidation zone
withdrawn
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
GB3411861A
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.)
Standard Oil Co
Original Assignee
Standard Oil 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 Standard Oil Co filed Critical Standard Oil Co
Publication of GB1008191A publication Critical patent/GB1008191A/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
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B01J19/006—Baffles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00101—Reflux columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00103—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor in a heat exchanger separate from the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00164—Controlling or regulating processes controlling the flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00761—Details of the reactor
    • B01J2219/00763—Baffles
    • B01J2219/00765—Baffles attached to the reactor wall
    • B01J2219/00777—Baffles attached to the reactor wall horizontal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Benzoic acid is made by a continuous process which comprises reacting a monoalkylbenzene with molecular oxygen in an oxidation zone in the presence of liquid benzoic acid and a heavy metal oxidation catalyst at a temperature above the oxidation potential threshold temperature of the monoalkylbenzene, removing heat of reaction by indirect heat exchange between reaction mixture and a cooling medium, withdrawing liquid reaction mixture from the oxidation zone, recycling the major portion of the withdrawn liquid reaction mixture to the oxidation zone, and removing a minor portion of the withdrawn reaction mixture for the recovery of benzoic acid therefrom. The oxidation may be effected adiabatically or isothermally. In one adiabatic method, a portion of the resulting reaction liquid, mainly benzoic acid, is withdrawn from the oxidation zone and passed through an external heat removal loop and the cooled liquid reactor effluent is returned to the oxidation zone. A slip stream of the liquid in the external loop is withdrawn, preferably before the heat removal, and processed to recover benzoic acid. Make-up monoalkyl benzene is preferably added to the cooled recycled stream. In another embodiment, an isothermal oxidation zone is in indirect heat exchange relationship with a cooling medium for heat removal, for example by using a tubular coil or bundle of tubes or elongated cylinder surrounded by the cooling medium, preferably water. The effluent is passed to a gas-liquid separator, the liquid is withdrawn from the separator, a major portion being recycled with make-up monoalkylbenzene to the oxidation zone, and a minor portion being processed to recover benzoic acid. Suitable forms of apparatus for the oxidation of monoalkylbenzene and the recovery of benzoic acid are described. The oxidation temperature is preferably 300-400 DEG C. manganese and/or cobalt compounds are preferred as the heavy metal catalysts but nickel, chomium, vanadium, molybdenum, tungsten, tin and cerium can be used. The catalyst preferably contains bromine in ionic, elemental or covalent combined form. Detailed examples are given. Specification 1,008,192 is referred to.
GB3411861A 1960-09-23 1961-09-22 Manufacture of benzoic acid Expired GB1008191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5811660A 1960-09-23 1960-09-23

Publications (1)

Publication Number Publication Date
GB1008191A true GB1008191A (en) 1965-10-27

Family

ID=22014784

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3411861A Expired GB1008191A (en) 1960-09-23 1961-09-22 Manufacture of benzoic acid
GB2514765A Expired GB1008192A (en) 1960-09-23 1961-09-22 Oxidation apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2514765A Expired GB1008192A (en) 1960-09-23 1961-09-22 Oxidation apparatus

Country Status (2)

Country Link
GB (2) GB1008191A (en)
NL (1) NL269509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209122A1 (en) * 2000-11-24 2002-05-29 Degussa AG Process for continuous oxidation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209122A1 (en) * 2000-11-24 2002-05-29 Degussa AG Process for continuous oxidation
WO2002042202A1 (en) * 2000-11-24 2002-05-30 Degussa Ag Continuous oxidation method
US6426057B1 (en) 2000-11-24 2002-07-30 Degussa Ag Process for continuous oxidation

Also Published As

Publication number Publication date
GB1008192A (en) 1965-10-27
NL269509A (en)

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