FR2159050A5 - Urea particles prodn - in a fluidized bed utilizing heat of crystallization to evaporate water - Google Patents

Urea particles prodn - in a fluidized bed utilizing heat of crystallization to evaporate water

Info

Publication number
FR2159050A5
FR2159050A5 FR7238328A FR7238328A FR2159050A5 FR 2159050 A5 FR2159050 A5 FR 2159050A5 FR 7238328 A FR7238328 A FR 7238328A FR 7238328 A FR7238328 A FR 7238328A FR 2159050 A5 FR2159050 A5 FR 2159050A5
Authority
FR
France
Prior art keywords
urea
bed
soln
nuclei
crystallization
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
FR7238328A
Other languages
English (en)
French (fr)
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.)
AIRPROCESS AG
Original Assignee
AIRPROCESS AG
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 AIRPROCESS AG filed Critical AIRPROCESS AG
Application granted granted Critical
Publication of FR2159050A5 publication Critical patent/FR2159050A5/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • 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
    • B01J2/04—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 in a gaseous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fertilizers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glanulating (AREA)
FR7238328A 1971-10-27 1972-10-27 Urea particles prodn - in a fluidized bed utilizing heat of crystallization to evaporate water Expired FR2159050A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7114771A NL7114771A (da) 1971-10-27 1971-10-27

Publications (1)

Publication Number Publication Date
FR2159050A5 true FR2159050A5 (en) 1973-06-15

Family

ID=19814340

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7238328A Expired FR2159050A5 (en) 1971-10-27 1972-10-27 Urea particles prodn - in a fluidized bed utilizing heat of crystallization to evaporate water

Country Status (5)

Country Link
JP (1) JPS4852551A (da)
DE (1) DE2252112A1 (da)
FR (1) FR2159050A5 (da)
IT (1) IT972104B (da)
NL (1) NL7114771A (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2393779A1 (fr) * 1977-06-09 1979-01-05 Azote Sa Cie Neerlandaise Procede ameliore pour la granulation de l'uree
FR2481948A1 (fr) * 1980-05-12 1981-11-13 Azote Sa Cie Neerlandaise Procede de fabrication de granules obtenus a partir d'un noyau que l'on entoure d'une enveloppe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2393779A1 (fr) * 1977-06-09 1979-01-05 Azote Sa Cie Neerlandaise Procede ameliore pour la granulation de l'uree
FR2481948A1 (fr) * 1980-05-12 1981-11-13 Azote Sa Cie Neerlandaise Procede de fabrication de granules obtenus a partir d'un noyau que l'on entoure d'une enveloppe

Also Published As

Publication number Publication date
JPS4852551A (da) 1973-07-24
DE2252112A1 (de) 1973-05-03
NL7114771A (da) 1973-05-02
IT972104B (it) 1974-05-20

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Legal Events

Date Code Title Description
ST Notification of lapse