CH462123A - Verfahren zur Herstellung von Cyansäure aus Harnstoff - Google Patents

Verfahren zur Herstellung von Cyansäure aus Harnstoff

Info

Publication number
CH462123A
CH462123A CH1626564A CH1626564A CH462123A CH 462123 A CH462123 A CH 462123A CH 1626564 A CH1626564 A CH 1626564A CH 1626564 A CH1626564 A CH 1626564A CH 462123 A CH462123 A CH 462123A
Authority
CH
Switzerland
Prior art keywords
urea
fluidized bed
cyanic acid
gas
acid
Prior art date
Application number
CH1626564A
Other languages
German (de)
English (en)
Inventor
Alfred Dr Schmidt
Ferdinand Dr Weinrotter
Walter Dr Mueller
Original Assignee
Chemie Linz 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
Priority claimed from AT23664A external-priority patent/AT244345B/de
Priority claimed from AT23564A external-priority patent/AT258881B/de
Application filed by Chemie Linz Ag filed Critical Chemie Linz Ag
Publication of CH462123A publication Critical patent/CH462123A/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/20—Thiocyanic acid; Salts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/70—Carbohydrates; Sugars; Derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/10—Venturi scrubbers
    • 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
    • B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
    • B01J10/02—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor of the thin-film type
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2435—Loop-type reactors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/001—Preparation by decomposing nitrogen-containing organic compounds, e.g. molasse waste or urea
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/185—Details relating to the spatial orientation of the reactor vertical

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medicinal Chemistry (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH1626564A 1964-01-14 1964-12-17 Verfahren zur Herstellung von Cyansäure aus Harnstoff CH462123A (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT23664A AT244345B (de) 1964-01-14 1964-01-14 Verfahren und Vorrichtung zur Gewinnung von reinem Melamin
AT23564A AT258881B (de) 1964-01-14 1964-01-14 Verfahren zur Herstellung eines cyanursäurearmen Cyansäure-Ammoniak-Gasgemisches aus Harnstoff

Publications (1)

Publication Number Publication Date
CH462123A true CH462123A (de) 1968-09-15

Family

ID=25591967

Family Applications (2)

Application Number Title Priority Date Filing Date
CH1626564A CH462123A (de) 1964-01-14 1964-12-17 Verfahren zur Herstellung von Cyansäure aus Harnstoff
CH26665A CH475265A (de) 1964-01-14 1965-01-08 Verfahren zur Gewinnung von reinem Melamin

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH26665A CH475265A (de) 1964-01-14 1965-01-08 Verfahren zur Gewinnung von reinem Melamin

Country Status (7)

Country Link
US (1) US3388533A ( )
BE (3) BE621602A ( )
CH (2) CH462123A ( )
FR (1) FR1419370A ( )
GB (2) GB1024057A ( )
NL (3) NL6500131A ( )
SE (1) SE320378B ( )

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397214B (de) * 1992-03-30 1994-02-25 Chemie Linz Gmbh Vorrichtung zur abscheidung von melamin
AT403475B (de) * 1994-07-22 1998-02-25 Chemie Linz Gmbh Verfahren zur herstellung von cyanursäure
AU2001234172A1 (en) * 2000-02-25 2001-09-03 Ebara Corporation Method and apparatus for electromagnetic irradiation of liquid
CN112934156A (zh) * 2021-03-22 2021-06-11 贺好 一种多腔联动式反应釜系统及其使用方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755887A (en) * 1956-07-24 Melamine purification
US3161638A (en) * 1964-12-15 Filter
US2863869A (en) * 1958-12-09 Melamine purification process
BE603714A ( ) * 1960-05-12
BE603712A ( ) * 1960-05-12
US3112352A (en) * 1960-05-18 1963-11-26 Svenska Flaektfabriken Ab Distribution channel for supplying washing liquid
US3315442A (en) * 1964-10-05 1967-04-25 American Cyanamid Co Quenching of crude melamine gases

Also Published As

Publication number Publication date
NL6500131A ( ) 1965-07-15
BE658204A ( ) 1965-07-12
BE658205A ( ) 1965-07-12
FR1419370A (fr) 1965-11-26
NL6500270A ( ) 1965-07-15
GB1054502A ( )
CH475265A (de) 1969-07-15
SE320378B ( ) 1970-02-09
US3388533A (en) 1968-06-18
GB1024057A (en) 1966-03-30
NL282311A ( )
BE621602A ( ) 1963-02-21

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