CR6226A - Metodo para formar urea fluida con bajo contenido de biuret - Google Patents

Metodo para formar urea fluida con bajo contenido de biuret

Info

Publication number
CR6226A
CR6226A CR6226A CR6226A CR6226A CR 6226 A CR6226 A CR 6226A CR 6226 A CR6226 A CR 6226A CR 6226 A CR6226 A CR 6226A CR 6226 A CR6226 A CR 6226A
Authority
CR
Costa Rica
Prior art keywords
crystals
urea
forming fluid
content
biuret content
Prior art date
Application number
CR6226A
Other languages
English (en)
Inventor
E Eimer Kenneh
G Nelson Harold
P Valpiani Sante
E Chandler Douglas
c anderson Mark
Original Assignee
Coastal States Man Corp
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 Coastal States Man Corp filed Critical Coastal States Man Corp
Publication of CR6226A publication Critical patent/CR6226A/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/005—Post-treatment
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

Un método para producir urea con bajo contenido de biurina, el cual incluye: suministrar cristales sólidos de urea con un contenido de biurina menor al 0.25% por peso, y transformar dichos cristales sólidos de urea, mediante compactación mecánica, en masas discretas. Los cristales sólidos se obtienen extrayendo los cristales de urea de un licor madre y secando dichos cristales extraídos a una temperatura que oscila entre 55-95°C.
CR6226A 1999-08-10 2000-08-08 Metodo para formar urea fluida con bajo contenido de biuret CR6226A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/371,560 US6277311B1 (en) 1999-08-10 1999-08-10 Method of forming flowable urea having low biuret content

Publications (1)

Publication Number Publication Date
CR6226A true CR6226A (es) 2002-05-07

Family

ID=23464469

Family Applications (1)

Application Number Title Priority Date Filing Date
CR6226A CR6226A (es) 1999-08-10 2000-08-08 Metodo para formar urea fluida con bajo contenido de biuret

Country Status (8)

Country Link
US (1) US6277311B1 (es)
AU (1) AU756914B2 (es)
BR (1) BR0003481A (es)
CR (1) CR6226A (es)
GT (1) GT200000129A (es)
HN (1) HN2000000176A (es)
MX (1) MXPA00007705A (es)
NZ (1) NZ506098A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026602A1 (en) * 1999-10-13 2001-04-19 Novo Nordisk A/S Method for producing an elongated drug formulation
US20050163911A1 (en) * 2004-01-28 2005-07-28 Cargill, Inc. Animal feed product containing crushed urea
US20090312428A1 (en) * 2008-06-13 2009-12-17 Fernando Figueredo Biocide Compositions Comprising Quaternary Ammonium and Urea and Methods for Their Use
PE20142000A1 (es) * 2011-10-14 2014-12-20 Stamicarbon Metodo de acabado de urea
DE102018215427A1 (de) * 2018-09-11 2020-03-12 Skw Stickstoffwerke Piesteritz Gmbh Pelletierter Harnstoff in zylindrischer Form als Schüttgut und Methode zur Herstellung davon

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU34031B (en) 1969-05-29 1978-10-31 Snam Progetti Process for melting carbamide crystals in order to obtain pelleted carbamide of a low biuret content
US4069253A (en) 1970-07-01 1978-01-17 Mitsui Toatsu Chemicals, Incorporated Process for the production of water-free molten urea
US3689607A (en) 1970-10-26 1972-09-05 Union Oil Co Urea prilling
US3819310A (en) 1971-01-08 1974-06-25 I Mavrovic Apparatus for prilling urea
US3933956A (en) 1972-05-22 1976-01-20 Ivo Mavrovic Process for prilling urea
US3903158A (en) 1973-05-16 1975-09-02 Mexico Guanos Process for reducing the biuret content in urea
US4190622A (en) 1978-05-04 1980-02-26 Standard Oil Company (Ohio) Process for prilling urea
NL8001876A (nl) 1980-03-29 1981-11-02 Unie Van Kunstmestfab Bv Werkwijze voor het maken van ureumprils en ureumprils verkregen met deze werkwijze.
US4525198A (en) 1981-05-13 1985-06-25 Compagnie Neerlandaise De L'azote Process for the production of urea granules
US4654442A (en) 1983-12-30 1987-03-31 Union Oil Company Of California Methods for removing biuret from urea
US4997469A (en) 1990-01-10 1991-03-05 Harmony Products, Inc. High integrity, low odor, natural based nitrogenous granules for agriculture

Also Published As

Publication number Publication date
AU756914B2 (en) 2003-01-23
GT200000129A (es) 2002-01-30
HN2000000176A (es) 2001-02-01
AU5187700A (en) 2001-02-15
BR0003481A (pt) 2001-04-03
US6277311B1 (en) 2001-08-21
NZ506098A (en) 2001-09-28
MXPA00007705A (es) 2002-06-04

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal (granting procedure)