CH617672A5 - Process for reducing the biuret content in urea - Google Patents

Process for reducing the biuret content in urea Download PDF

Info

Publication number
CH617672A5
CH617672A5 CH674574A CH674574A CH617672A5 CH 617672 A5 CH617672 A5 CH 617672A5 CH 674574 A CH674574 A CH 674574A CH 674574 A CH674574 A CH 674574A CH 617672 A5 CH617672 A5 CH 617672A5
Authority
CH
Switzerland
Prior art keywords
urea
biuret
resin
solution
ion exchange
Prior art date
Application number
CH674574A
Other languages
English (en)
Italian (it)
Inventor
Ramon Xutgla Marin
Jose Cabello Fuentes
Original Assignee
Mexico Guanos
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
Priority claimed from IT2416173A external-priority patent/IT987491B/it
Application filed by Mexico Guanos filed Critical Mexico Guanos
Publication of CH617672A5 publication Critical patent/CH617672A5/it

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
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C07C273/16—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
CH674574A 1973-05-16 1974-05-16 Process for reducing the biuret content in urea CH617672A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2416173A IT987491B (it) 1973-05-16 1973-05-16 Procedimento per ridurre il con tenuto di biureto nella urea
GB2327273A GB1404098A (en) 1973-05-16 1973-05-16 Process for reducing the biuret content in urea

Publications (1)

Publication Number Publication Date
CH617672A5 true CH617672A5 (en) 1980-06-13

Family

ID=26256424

Family Applications (1)

Application Number Title Priority Date Filing Date
CH674574A CH617672A5 (en) 1973-05-16 1974-05-16 Process for reducing the biuret content in urea

Country Status (18)

Country Link
AR (1) AR213610A1 (no)
AT (1) AT344723B (no)
BE (1) BE815096A (no)
BG (1) BG21603A3 (no)
BR (1) BR7403961D0 (no)
CA (1) CA1019344A (no)
CH (1) CH617672A5 (no)
CS (1) CS203001B2 (no)
DD (1) DD113897A5 (no)
EG (1) EG11437A (no)
FR (1) FR2229690B1 (no)
GB (1) GB1404098A (no)
IN (1) IN142126B (no)
LU (1) LU70102A1 (no)
NL (1) NL7406618A (no)
SE (1) SE420196B (no)
SU (1) SU953978A3 (no)
ZA (1) ZA743136B (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753985B2 (en) 2004-02-05 2010-07-13 Uhde Gmbh Reduction of biuret and free ammonia during a method for producing fertilizer granulates containing urea
WO2021004713A1 (de) 2019-07-10 2021-01-14 Thyssenkrupp Industrial Solutions Ag Reduzierung der biuretgeneration in der harnstoffproduktion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4345099A (en) * 1981-08-10 1982-08-17 Union Oil Company Of California Method of selectively removing biuret from urea and compositions for use therein
RU2472777C1 (ru) * 2011-11-23 2013-01-20 Фарид Алекович Батуллин Способ получения кристаллического карбамида высокой очистки

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753985B2 (en) 2004-02-05 2010-07-13 Uhde Gmbh Reduction of biuret and free ammonia during a method for producing fertilizer granulates containing urea
WO2021004713A1 (de) 2019-07-10 2021-01-14 Thyssenkrupp Industrial Solutions Ag Reduzierung der biuretgeneration in der harnstoffproduktion

Also Published As

Publication number Publication date
SU953978A3 (ru) 1982-08-23
DD113897A5 (no) 1975-07-05
ATA406174A (de) 1977-12-15
LU70102A1 (no) 1976-04-13
ZA743136B (en) 1975-08-27
BR7403961D0 (pt) 1974-12-24
FR2229690B1 (no) 1976-12-24
BG21603A3 (no) 1976-07-20
CS203001B2 (en) 1981-02-27
SE420196B (sv) 1981-09-21
FR2229690A1 (no) 1974-12-13
NL7406618A (no) 1974-11-19
AU6904674A (en) 1975-11-20
EG11437A (en) 1977-08-15
GB1404098A (en) 1975-08-28
AT344723B (de) 1978-08-10
BE815096A (fr) 1974-11-18
IN142126B (no) 1977-06-04
CA1019344A (en) 1977-10-18
AR213610A1 (es) 1979-02-28
DE2423890B2 (de) 1976-04-15
DE2423890A1 (de) 1974-12-12

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