GB1404098A - Process for reducing the biuret content in urea - Google Patents

Process for reducing the biuret content in urea

Info

Publication number
GB1404098A
GB1404098A GB2327273A GB2327273A GB1404098A GB 1404098 A GB1404098 A GB 1404098A GB 2327273 A GB2327273 A GB 2327273A GB 2327273 A GB2327273 A GB 2327273A GB 1404098 A GB1404098 A GB 1404098A
Authority
GB
United Kingdom
Prior art keywords
urea
lines
columns
resin
ion
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
GB2327273A
Other languages
English (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.)
MEXICO GUANOS
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
Application filed by MEXICO GUANOS filed Critical MEXICO GUANOS
Priority to GB2327273A priority Critical patent/GB1404098A/en
Priority claimed from IT2416173A external-priority patent/IT987491B/it
Priority to AR253709A priority patent/AR213610A1/es
Priority to EG175/74A priority patent/EG11437A/xx
Priority to BR3961/74A priority patent/BR7403961D0/pt
Priority to AT406174A priority patent/AT344723B/de
Priority to NL7406618A priority patent/NL7406618A/xx
Priority to CS743519A priority patent/CS203001B2/cs
Priority to LU70102A priority patent/LU70102A1/xx
Priority to DD178556A priority patent/DD113897A5/xx
Priority to DE19742423890 priority patent/DE2423890C3/de
Priority to CH674574A priority patent/CH617672A5/it
Priority to BG26705A priority patent/BG21603A3/xx
Priority to FR7417058A priority patent/FR2229690B1/fr
Priority to IN1069/CAL/1974A priority patent/IN142126B/en
Priority to SU742026956A priority patent/SU953978A3/ru
Priority to AU69046/74A priority patent/AU480560B2/en
Priority to SE7406519A priority patent/SE420196B/xx
Priority to BE144365A priority patent/BE815096A/xx
Priority to ZA00743136A priority patent/ZA743136B/xx
Priority to CA200,114A priority patent/CA1019344A/en
Publication of GB1404098A publication Critical patent/GB1404098A/en
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
    • 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)
GB2327273A 1973-05-16 1973-05-16 Process for reducing the biuret content in urea Expired GB1404098A (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
GB2327273A GB1404098A (en) 1973-05-16 1973-05-16 Process for reducing the biuret content in urea
AR253709A AR213610A1 (es) 1973-05-16 1974-05-13 Un procedimiento para eliminar todo contenido indeseado de biuret de urea contenida en una sustancia que comprende biuret y urea
EG175/74A EG11437A (en) 1973-05-16 1974-05-15 Process for reducing the buiret content in urea
BR3961/74A BR7403961D0 (pt) 1973-05-16 1974-05-15 Processo para reduzir o teor de biureto da ureia
CA200,114A CA1019344A (en) 1973-05-16 1974-05-16 Process for reducing the biuret content in urea
CH674574A CH617672A5 (en) 1973-05-16 1974-05-16 Process for reducing the biuret content in urea
IN1069/CAL/1974A IN142126B (de) 1973-05-16 1974-05-16
CS743519A CS203001B2 (en) 1973-05-16 1974-05-16 Method for reducing content of biuret or its metallic complex in urea solution
LU70102A LU70102A1 (de) 1973-05-16 1974-05-16
DD178556A DD113897A5 (de) 1973-05-16 1974-05-16
DE19742423890 DE2423890C3 (de) 1973-05-16 1974-05-16 Verfahren zur Gewinnung von Harnstoff mit vermindertem Biuretgehalt
AT406174A AT344723B (de) 1973-05-16 1974-05-16 Verfahren zur verminderung des biuretgehaltes von harnstoff
BG26705A BG21603A3 (de) 1973-05-16 1974-05-16
FR7417058A FR2229690B1 (de) 1973-05-16 1974-05-16
NL7406618A NL7406618A (de) 1973-05-16 1974-05-16
SU742026956A SU953978A3 (ru) 1973-05-16 1974-05-16 Способ очистки карбамида от примесей биурета
AU69046/74A AU480560B2 (en) 1973-05-16 1974-05-16 Process for reducing the biuret content in urea
SE7406519A SE420196B (sv) 1973-05-16 1974-05-16 Forfarande for minskning av biurethalten i karbamid
BE144365A BE815096A (fr) 1973-05-16 1974-05-16 Procede pour diminuer la teneur en biuret de l'uree
ZA00743136A ZA743136B (en) 1973-05-16 1974-05-16 Process for reducing the biuret content in urea

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
GB1404098A true GB1404098A (en) 1975-08-28

Family

ID=26256424

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2327273A Expired GB1404098A (en) 1973-05-16 1973-05-16 Process for reducing the biuret content in urea

Country Status (18)

Country Link
AR (1) AR213610A1 (de)
AT (1) AT344723B (de)
BE (1) BE815096A (de)
BG (1) BG21603A3 (de)
BR (1) BR7403961D0 (de)
CA (1) CA1019344A (de)
CH (1) CH617672A5 (de)
CS (1) CS203001B2 (de)
DD (1) DD113897A5 (de)
EG (1) EG11437A (de)
FR (1) FR2229690B1 (de)
GB (1) GB1404098A (de)
IN (1) IN142126B (de)
LU (1) LU70102A1 (de)
NL (1) NL7406618A (de)
SE (1) SE420196B (de)
SU (1) SU953978A3 (de)
ZA (1) ZA743136B (de)

Cited By (3)

* 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
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO131559A2 (ro) * 2011-11-23 2016-12-30 Farid Alekovich Batullin Metodă pentru obţinerea carbamidei cristaline cu puritate ridicată

Cited By (3)

* 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
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
BG21603A3 (de) 1976-07-20
IN142126B (de) 1977-06-04
DD113897A5 (de) 1975-07-05
AU6904674A (en) 1975-11-20
AR213610A1 (es) 1979-02-28
DE2423890A1 (de) 1974-12-12
NL7406618A (de) 1974-11-19
BR7403961D0 (pt) 1974-12-24
SE420196B (sv) 1981-09-21
LU70102A1 (de) 1976-04-13
FR2229690B1 (de) 1976-12-24
FR2229690A1 (de) 1974-12-13
DE2423890B2 (de) 1976-04-15
CS203001B2 (en) 1981-02-27
CH617672A5 (en) 1980-06-13
BE815096A (fr) 1974-11-18
CA1019344A (en) 1977-10-18
EG11437A (en) 1977-08-15
AT344723B (de) 1978-08-10
ATA406174A (de) 1977-12-15
ZA743136B (en) 1975-08-27

Similar Documents

Publication Publication Date Title
ES8601710A1 (es) Un procedimiento para separar un componente extracto de un componente refinado,contenidos en una mezcla de alimentacion
ES479575A1 (es) Metodo y aparato de cambio ionico del tipo de lecho en movi-miento.
IE812785L (en) Removal of urea, ammonia and carbon dioxide from aqueous¹solutions
GB1404098A (en) Process for reducing the biuret content in urea
KR890003724A (ko) 증류에 의한 테트라히드로푸란의 정제방법
ES480636A1 (es) Un procedimiento para la purificacion de liquidos o, la re- generacion de soluciones absorbentes.
GB1202718A (en) Method and apparatus for treating liquids
GB1413834A (en) Process for the continuous treatment of ion exchanger particles
GB1435936A (en) Method and apparatus for the purification of liquids
ES422495A1 (es) Un aparato filtrante, en especial para filtrar agua pota- ble.
ES486502A1 (es) Procedimiento y aparato para el contacto continuo en contra-corriente de una fase solida particulada con una fase liqui-da
MA19647A1 (fr) Procede pour isoler ou concentrer des substances aromatiques
DE3263386D1 (en) Hydrocarbon-hydrogenation process
ES449750A1 (es) Procedimiento para la clarificacion del mosto de cerveza.
KR100384917B1 (ko) 트리옥산의제조방법
US2599757A (en) Ion exchange system
GB1191958A (en) Three-Stage Hydrocracking Process
GB1310755A (en) Method and apparatus for mixed bed ion exchange treatment of water
GB1504384A (en) Ion exchange process
IE34128B1 (en) Method and plant for effecting mass transfer processes
Gold et al. Wastewater reuse by continuous ion exchange
GB1382450A (en) Continuous ion exchange process and apparatus
GB1449529A (en) Process for purifying chromic acid waste water containing chromate ions and recovering a chromic acid solution
JPS5528762A (en) Condensed water treating method
GB1019037A (en) An improved process for liquid purification

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee