ES8401757A1 - Perfeccionamientos en un procedimiento de fabricacion de acido cianurico a partir de urea. - Google Patents

Perfeccionamientos en un procedimiento de fabricacion de acido cianurico a partir de urea.

Info

Publication number
ES8401757A1
ES8401757A1 ES520763A ES520763A ES8401757A1 ES 8401757 A1 ES8401757 A1 ES 8401757A1 ES 520763 A ES520763 A ES 520763A ES 520763 A ES520763 A ES 520763A ES 8401757 A1 ES8401757 A1 ES 8401757A1
Authority
ES
Spain
Prior art keywords
cyanuric acid
manufacture
melting point
temperature above
heating urea
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
ES520763A
Other languages
English (en)
Other versions
ES520763A0 (es
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.)
Orkem SA
Original Assignee
Chimique des Charbonnages SA
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 Chimique des Charbonnages SA filed Critical Chimique des Charbonnages SA
Publication of ES8401757A1 publication Critical patent/ES8401757A1/es
Publication of ES520763A0 publication Critical patent/ES520763A0/es
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/30—Only oxygen atoms
    • C07D251/32—Cyanuric acid; Isocyanuric acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO PARA LA FABRICACION DE ACIDO CIANURICO A PARTIR DE UREA, MEDIANTE CALENTAMIENTO DE UREA A UNA TEMPERATURA SUPERIOR A LA TEMPERATURA DE FUSION.COMPRENDE LAS SIGUIENTES OPERACIONES: EN UNA PRIMERA ETAPA SE CALIENTA A UNA TEMPERATURA COMPRENDIDA ENTRE 220 Y 280J, UREA FUNDIDA O EN FORMA DE SOLUCION ACUOSA SOBRE GRANULOS DE ACIDO CIANURICO BRUTO PREPARADOS PREVIAMENTE; SEGUNDA, LA RECICLACION DEL ACIDO CIANURICO BRUTO SE REALIZA EN UN APARATO ADECUADO, PUDIENDO REALIZARSE DE UNA FORMA EXTERNA O INTERNA Y POR ULTIMO, EN UNA SEGUNDA ETAPA, SE PURIFICA EL ACIDO CIANURICOBRUTO TRATANDOLES POR MEDIO DE UN ACIDO FUERTE EN FORMA DE SOLUCION DILUIDA, GENERALMENTE ACIDO SULFURICO, FOSFORICO O NITRICO.
ES520763A 1982-03-24 1983-03-18 Perfeccionamientos en un procedimiento de fabricacion de acido cianurico a partir de urea. Granted ES520763A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR828204960A FR2523968B1 (fr) 1982-03-24 1982-03-24 Perfectionnement au procede de fabrication de l'acide cyanurique par chauffage de l'uree a une temperature superieure a sa temperature de fusion

Publications (2)

Publication Number Publication Date
ES8401757A1 true ES8401757A1 (es) 1984-01-01
ES520763A0 ES520763A0 (es) 1984-01-01

Family

ID=9272313

Family Applications (1)

Application Number Title Priority Date Filing Date
ES520763A Granted ES520763A0 (es) 1982-03-24 1983-03-18 Perfeccionamientos en un procedimiento de fabricacion de acido cianurico a partir de urea.

Country Status (5)

Country Link
US (1) US4455423A (es)
BE (1) BE896250A (es)
ES (1) ES520763A0 (es)
FR (1) FR2523968B1 (es)
IT (1) IT1160758B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2103679A1 (es) * 1995-03-10 1997-09-16 Inquide S A Proceso e instalacion para la obtencion de acido cianurico de elevada pureza.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404873A1 (de) * 1984-02-11 1985-08-14 Hoechst Ag, 6230 Frankfurt Verfahren zur herstellung von cyanursaeure
CN111848530A (zh) * 2020-08-03 2020-10-30 山东兴达化工有限公司 一种节能低污染的氰尿酸制备方法
CA3265078A1 (en) 2022-10-07 2024-04-11 Casale Sa MELAMINE TREATMENT WITH TWO-STAGE PURIFICATION OF MELAMINE GAS EFFLUENTS
PT4349817T (pt) 2022-10-07 2025-07-08 Casale Sa Processo de melamina com purificação de duas etapas de gases de melamina

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1183672A (fr) * 1956-10-08 1959-07-10 Fmc Corp Procédé de fabrication de l'acide cyanurique en granules et produit conforme à celui obtenu
US3236845A (en) * 1963-04-26 1966-02-22 Grace W R & Co Production of cyanuric acid from urea
FR1346599A (fr) * 1963-01-11 1963-12-20 Monsanto Chemicals Procédé perfectionné de préparation d'acide cyanurique
NO129437B (es) * 1970-04-27 1974-04-16 Stord Bartz Industri As
NO122742B (es) * 1970-05-16 1971-08-02 Stord Bartz Industri As
JPS5341676B2 (es) * 1973-10-05 1978-11-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2103679A1 (es) * 1995-03-10 1997-09-16 Inquide S A Proceso e instalacion para la obtencion de acido cianurico de elevada pureza.

Also Published As

Publication number Publication date
IT8320271A0 (it) 1983-03-24
IT1160758B (it) 1987-03-11
BE896250A (fr) 1983-09-23
FR2523968B1 (fr) 1985-07-26
FR2523968A1 (fr) 1983-09-30
US4455423A (en) 1984-06-19
ES520763A0 (es) 1984-01-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001009