FR2457116A2 - Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc. - Google Patents

Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc.

Info

Publication number
FR2457116A2
FR2457116A2 FR7912937A FR7912937A FR2457116A2 FR 2457116 A2 FR2457116 A2 FR 2457116A2 FR 7912937 A FR7912937 A FR 7912937A FR 7912937 A FR7912937 A FR 7912937A FR 2457116 A2 FR2457116 A2 FR 2457116A2
Authority
FR
France
Prior art keywords
seeding
centrifuge
magma
prodn
crystals
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.)
Pending
Application number
FR7912937A
Other languages
French (fr)
Inventor
Gerard Journet
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR7912937A priority Critical patent/FR2457116A2/en
Publication of FR2457116A2 publication Critical patent/FR2457116A2/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0063—Control or regulation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Peptides Or Proteins (AREA)
  • Saccharide Compounds (AREA)

Abstract

Process for the prodn. of crystallisation nuclei for seeding a soln. to be crystallised in a continuous crystalliser is claimed. A suspension of crystals in the soln. is centrifuged and crystals above a predetermined size are sepd., crushed and recycled into the centrifuge. The suspension fed into the centrifuge represents a fraction of the prod. delivered by the crystalliser. This fraction is mixed with the sepd., oversize, crushed crystals prior to recycling. The centrifuge drainings contg. the crystals below the predetermined size of sepn. are injected as seeding magma into the crystalliser. The viscosity of the suspension being centrifuged is pref. adjusted by additions of a sugar soln. The seeding magma is predp. without running it through a second centrifuge. This means that the plant installation is cheaper to purchase, install and maintain, as well as being simpler to operate.
FR7912937A 1979-05-22 1979-05-22 Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc. Pending FR2457116A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7912937A FR2457116A2 (en) 1979-05-22 1979-05-22 Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7912937A FR2457116A2 (en) 1979-05-22 1979-05-22 Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc.

Publications (1)

Publication Number Publication Date
FR2457116A2 true FR2457116A2 (en) 1980-12-19

Family

ID=9225710

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912937A Pending FR2457116A2 (en) 1979-05-22 1979-05-22 Prodn. of crystallisation nuclei - employs only one centrifuge to separate seeding magma, used for seeding sugar soln. etc.

Country Status (1)

Country Link
FR (1) FR2457116A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602153A1 (en) * 1986-08-01 1988-02-05 Fives Cail Babcock Process for the production of a seeding magma for a continuously operating crystalliser
EP0255786A1 (en) * 1986-08-01 1988-02-10 FIVES-CAIL BABCOCK, Société Anonyme Process and device for producing a magma of seed crystals for a continuous-crystallization apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374067A1 (en) * 1976-12-14 1978-07-13 Fives Cail Babcock PROCESS AND PLANT FOR THE PRODUCTION OF SELECTED CRYSTALLIZING GERM, APPLICABLE TO DISCONTINUOUS OR CONTINUOUS CRYSTALLIZING APPARATUS, PARTICULARLY FOR LOW SWEET PRODUCTS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374067A1 (en) * 1976-12-14 1978-07-13 Fives Cail Babcock PROCESS AND PLANT FOR THE PRODUCTION OF SELECTED CRYSTALLIZING GERM, APPLICABLE TO DISCONTINUOUS OR CONTINUOUS CRYSTALLIZING APPARATUS, PARTICULARLY FOR LOW SWEET PRODUCTS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602153A1 (en) * 1986-08-01 1988-02-05 Fives Cail Babcock Process for the production of a seeding magma for a continuously operating crystalliser
EP0255786A1 (en) * 1986-08-01 1988-02-10 FIVES-CAIL BABCOCK, Société Anonyme Process and device for producing a magma of seed crystals for a continuous-crystallization apparatus

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