FR2165354A5 - Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals - Google Patents

Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals

Info

Publication number
FR2165354A5
FR2165354A5 FR7147875A FR7147875A FR2165354A5 FR 2165354 A5 FR2165354 A5 FR 2165354A5 FR 7147875 A FR7147875 A FR 7147875A FR 7147875 A FR7147875 A FR 7147875A FR 2165354 A5 FR2165354 A5 FR 2165354A5
Authority
FR
France
Prior art keywords
crystals
mother
particpentaerythritol
liquor
crystalliser
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
FR7147875A
Other languages
French (fr)
Inventor
Progil Rhone
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.)
Progil SARL
Original Assignee
Progil SARL
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 Progil SARL filed Critical Progil SARL
Priority to FR7147875A priority Critical patent/FR2165354A5/en
Application granted granted Critical
Publication of FR2165354A5 publication Critical patent/FR2165354A5/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0018—Evaporation of components of the mixture to be separated
    • B01D9/0022—Evaporation of components of the mixture to be separated by reducing pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A mother-liquid is made up comprising the crystal raw material, a solvent and, if necessary, a reagent to assist the reaction; the mother-liquor is fed into a crystalliser, e.g. a stenson type crystalliser with central draft tube baffle cylinder, and subjected to a vacuum corresp. to the vapour pressure of the solvent at a given operating temp., the crystallisation resulting from expansion of the mother-liquor. Regulated delivery of mother-liquor to the crystalliser controls size of crystals.
FR7147875A 1971-12-24 1971-12-24 Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals Expired FR2165354A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7147875A FR2165354A5 (en) 1971-12-24 1971-12-24 Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7147875A FR2165354A5 (en) 1971-12-24 1971-12-24 Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals

Publications (1)

Publication Number Publication Date
FR2165354A5 true FR2165354A5 (en) 1973-08-03

Family

ID=9088535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7147875A Expired FR2165354A5 (en) 1971-12-24 1971-12-24 Continuous vacuum crystallisation - giving regular crystals of controlled size, particpentaerythritol crystals

Country Status (1)

Country Link
FR (1) FR2165354A5 (en)

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Legal Events

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ST Notification of lapse