FR2293974A1 - Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln. - Google Patents

Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln.

Info

Publication number
FR2293974A1
FR2293974A1 FR7307591A FR7307591A FR2293974A1 FR 2293974 A1 FR2293974 A1 FR 2293974A1 FR 7307591 A FR7307591 A FR 7307591A FR 7307591 A FR7307591 A FR 7307591A FR 2293974 A1 FR2293974 A1 FR 2293974A1
Authority
FR
France
Prior art keywords
liq
vapour
satd
soln
granulating
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.)
Granted
Application number
FR7307591A
Other languages
French (fr)
Other versions
FR2293974B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7307591A priority Critical patent/FR2293974A1/en
Priority to DE2409695A priority patent/DE2409695A1/en
Priority to JP2408074A priority patent/JPS5025483A/ja
Publication of FR2293974A1 publication Critical patent/FR2293974A1/en
Application granted granted Critical
Publication of FR2293974B1 publication Critical patent/FR2293974B1/fr
Granted 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Glanulating (AREA)

Abstract

Granulation of fusible materials (I) passing the molten material in the form of spherical particles successively through a cooling medium present in the vapour phase and in the liq. phase respectively in a closed vessel and having a temp. in the liq. phase below the m.pt. of the material (I), is improved by (a) allowing the molten droplets to fall through a gas layer, e.g. air, of (height 2-50 cm, which is inert towards (I) and is situated above a liq. cooling medium column of height pre-determined experimentally as a function of (I) and its solidifying temp., (b) withdrawing, the solidified granulate, and (c) slightly emulsifying the cooling liq.
FR7307591A 1973-03-02 1973-03-02 Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln. Granted FR2293974A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7307591A FR2293974A1 (en) 1973-03-02 1973-03-02 Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln.
DE2409695A DE2409695A1 (en) 1973-03-02 1974-02-28 Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln.
JP2408074A JPS5025483A (en) 1973-03-02 1974-03-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7307591A FR2293974A1 (en) 1973-03-02 1973-03-02 Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln.

Publications (2)

Publication Number Publication Date
FR2293974A1 true FR2293974A1 (en) 1976-07-09
FR2293974B1 FR2293974B1 (en) 1977-07-22

Family

ID=9115720

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7307591A Granted FR2293974A1 (en) 1973-03-02 1973-03-02 Granulating fusible solids - with two-stage cooling using the vapour and liq. of a non-solvent liq. or satd. soln.

Country Status (1)

Country Link
FR (1) FR2293974A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754177A1 (en) * 1996-10-07 1998-04-10 Sanofi Sa VALPROIC ACID PHARMACEUTICAL MICROSPHERES FOR ORAL ADMINISTRATION

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227429B (en) * 1964-10-23 1966-10-27 Basf Ag Process for granulating molten salts by spraying

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227429B (en) * 1964-10-23 1966-10-27 Basf Ag Process for granulating molten salts by spraying

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754177A1 (en) * 1996-10-07 1998-04-10 Sanofi Sa VALPROIC ACID PHARMACEUTICAL MICROSPHERES FOR ORAL ADMINISTRATION
WO1998015268A1 (en) * 1996-10-07 1998-04-16 Sanofi Pharmaceutical microspheres of valproic acid for oral administration

Also Published As

Publication number Publication date
FR2293974B1 (en) 1977-07-22

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