GB910087A - A method for the vapour phase synthesis of vinyl acetate - Google Patents

A method for the vapour phase synthesis of vinyl acetate

Info

Publication number
GB910087A
GB910087A GB2083060A GB2083060A GB910087A GB 910087 A GB910087 A GB 910087A GB 2083060 A GB2083060 A GB 2083060A GB 2083060 A GB2083060 A GB 2083060A GB 910087 A GB910087 A GB 910087A
Authority
GB
United Kingdom
Prior art keywords
temperature
reactor
reaction temperature
reaction
starting material
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
GB2083060A
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.)
Kurashiki Rayon Co Ltd
Original Assignee
Kurashiki Rayon 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 Kurashiki Rayon Co Ltd filed Critical Kurashiki Rayon Co Ltd
Publication of GB910087A publication Critical patent/GB910087A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1836—Heating and cooling 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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00044—Temperature measurement
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00176—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles outside 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
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement
    • B01J2219/00063—Temperature measurement of the reactants
    • 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
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00164—Controlling or regulating processes controlling the flow

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

<PICT:0910087/III/1> Vinyl acetate is synthesized by the vapour phase reaction of acetylene and acetic acid in a fluidized catalytic reaction apparatus 1 wherein the reaction temperature is controlled by regulating the temperature of the starting material entering the reactor in response to the variation of the reaction temperature so as to maintain the reaction temperature substantially constant. In one method of operation, the starting material mixture 3, comprising acetylene gas from a blower and acetic acid vapour from an evaporator, is passed through a cooler or preheater 4 and a by-pass 5 in parallel and the proportion which passes through either path is regulated by valves 6 and 61 controlled in response to variations in the reaction temperature whereby the temperature of the starting material mixture entering the reactor is adjusted so as to maintain the reaction temperature substantially constant. In the apparatus shown, in which the reactor is large, two instruments 7 and 8 form a compound controlling system in which 7 measures the internal temperature (a) of the reactor 1 and will give a command to 8 corresponding to the variation of temperature whilst 8 will measure the temperature (b) and operate the valves 6 and 61 to make temperature (b) vary by an amount equal to the command given by 7. In a smaller apparatus, the instrument 7 can be used to control 6 and 61 directly. The catalyst may be powdered active carbon impregnated with zinc acetate and dried.ALSO:<PICT:0910087/IV (b)/1> Vinyl acetate is synthesized by this vapour phase reaction of acetylene and acetic acid in fluidized catalytic reaction apparatus 1 wherein the reaction temperature is controlled by regulating the temperature of the starting material entering the reactor in response to the variation of the reaction temperature so as to maintain the reaction temperature substantially constant. In one method operation, the starting material mixture 3, comprising acetylene gas from a blower and acetic acid vapour from an evaporator, is passed through a cooler or preheater 4 and a bypass 5 in parallel and the proportion which passes through either path is regulated by valves 6 and 61 controlled in response to variations in the reaction temperature whereby the temperature of the starting material mixture entering the reactor is adjusted so as to maintain the reaction temperature substantially constant. In the apparatus shown, in which the reactor is large, two instruments 7 and 8 form a compound controlling system in which 7 measures the internal temperature (a) of the reactor 1 and will give a command to 8 corresponding to the variation of the temperature, whilst 8 will measure the temperature (b) and operate the valves 6 and 61 to make the temperature (b) vary by an amount equal to the command given by 7. In smaller apparatus, the instrument 7 can be used to control 6 and 61 directly. The catalyst may be powdered active carbon impregnated with zinc acetate and dried.
GB2083060A 1959-09-04 1960-06-14 A method for the vapour phase synthesis of vinyl acetate Expired GB910087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2815359 1959-09-04

Publications (1)

Publication Number Publication Date
GB910087A true GB910087A (en) 1962-11-07

Family

ID=12240800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2083060A Expired GB910087A (en) 1959-09-04 1960-06-14 A method for the vapour phase synthesis of vinyl acetate

Country Status (3)

Country Link
DE (1) DE1230013B (en)
FR (1) FR1262344A (en)
GB (1) GB910087A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT162578B (en) * 1940-12-27 1949-03-10 Lonza Ag Process for the production of vinyl esters

Also Published As

Publication number Publication date
DE1230013B (en) 1966-12-08
FR1262344A (en) 1961-05-26

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