DE2802238C2 - - Google Patents

Info

Publication number
DE2802238C2
DE2802238C2 DE2802238A DE2802238A DE2802238C2 DE 2802238 C2 DE2802238 C2 DE 2802238C2 DE 2802238 A DE2802238 A DE 2802238A DE 2802238 A DE2802238 A DE 2802238A DE 2802238 C2 DE2802238 C2 DE 2802238C2
Authority
DE
Germany
Prior art keywords
zone
catalyst
reactor
urea
temperature
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
DE2802238A
Other languages
German (de)
English (en)
Other versions
DE2802238A1 (de
Inventor
Rudolf Van Geleen Nl Hardeveld
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.)
Koninklijke DSM NV
Original Assignee
Stamicarbon BV
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 NLAANVRAGE7700509,A external-priority patent/NL184318C/xx
Priority claimed from NL7700553A external-priority patent/NL184319C/xx
Application filed by Stamicarbon BV filed Critical Stamicarbon BV
Publication of DE2802238A1 publication Critical patent/DE2802238A1/de
Application granted granted Critical
Publication of DE2802238C2 publication Critical patent/DE2802238C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
    • B01J8/28—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations the one above the other
    • 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
    • C07D251/40—Nitrogen atoms
    • C07D251/54—Three nitrogen atoms
    • C07D251/56—Preparation of melamine
    • C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
DE19782802238 1977-01-19 1978-01-19 Verfahren zur herstellung von melamin Granted DE2802238A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NLAANVRAGE7700509,A NL184318C (nl) 1977-01-19 1977-01-19 Werkwijze voor het bereiden van melamine.
NL7700553A NL184319C (nl) 1977-01-20 1977-01-20 Bereiding van melamine uit ureum.

Publications (2)

Publication Number Publication Date
DE2802238A1 DE2802238A1 (de) 1978-07-20
DE2802238C2 true DE2802238C2 (en, 2012) 1989-02-23

Family

ID=26645276

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782802238 Granted DE2802238A1 (de) 1977-01-19 1978-01-19 Verfahren zur herstellung von melamin

Country Status (23)

Country Link
US (1) US4156080A (en, 2012)
JP (1) JPS5390279A (en, 2012)
AR (1) AR220116A1 (en, 2012)
AT (1) AT359512B (en, 2012)
BG (1) BG31650A3 (en, 2012)
BR (1) BR7800294A (en, 2012)
CA (1) CA1085393A (en, 2012)
CS (1) CS202004B2 (en, 2012)
DD (1) DD133666A5 (en, 2012)
DE (1) DE2802238A1 (en, 2012)
EG (1) EG12834A (en, 2012)
ES (1) ES466103A1 (en, 2012)
FR (1) FR2378021A1 (en, 2012)
GB (1) GB1560527A (en, 2012)
HU (1) HU180934B (en, 2012)
IN (1) IN146260B (en, 2012)
IT (1) IT1103254B (en, 2012)
MX (1) MX5805E (en, 2012)
NO (1) NO154347C (en, 2012)
PL (1) PL116547B1 (en, 2012)
RO (1) RO74590A (en, 2012)
SE (1) SE438148B (en, 2012)
YU (1) YU40025B (en, 2012)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7903473A (nl) * 1979-05-03 1980-11-05 Stamicarbon Werkwijze voor het bereiden van melamine.
NL8001874A (nl) * 1980-03-29 1981-11-02 Stamicarbon Inrichting voor het versproeien van een vloeistof met behulp van een gas.
NL8201479A (nl) * 1982-04-07 1983-11-01 Stamicarbon Werkwijze voor het bereiden van melamine.
IT1270577B (it) * 1993-02-22 1997-05-06 Wladimiro Bizzotto Reattore melamina ad alta pressione
US5384404A (en) * 1993-11-05 1995-01-24 Lee; Jing M. Process for manufacturing melamine from urea
NL1012466C2 (nl) * 1999-06-29 2001-01-02 Dsm Nv Werkwijze voor de bereiding van melamine uit ureum.
NL1022414C2 (nl) * 2003-01-17 2004-07-20 Dsm Nv Werkwijze voor het onttrekken van energie uit rookgassen.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158611A (en) * 1964-11-24 Converting urea to melamine in the gas phase over
US3152128A (en) * 1964-10-06 Preparation of melamine
US3095416A (en) * 1963-06-25 Urea to melamine process
DE1209570B (de) * 1964-03-28 1966-01-27 Basf Ag Verfahren zur Herstellung von Melamin
US3332947A (en) * 1965-09-14 1967-07-25 American Cyanamid Co Production of melamine
US3723430A (en) * 1970-10-28 1973-03-27 Nissan Chemical Ind Ltd Method for reclamation of melamine waste gas
US3895007A (en) * 1972-04-28 1975-07-15 Basf Ag Manufacture of melamine

Also Published As

Publication number Publication date
NO780190L (no) 1978-07-20
ES466103A1 (es) 1978-10-01
US4156080A (en) 1979-05-22
JPS5390279A (en) 1978-08-08
FR2378021B1 (en, 2012) 1983-08-26
YU8778A (en) 1982-10-31
EG12834A (en) 1979-12-31
DD133666A5 (de) 1979-01-17
BG31650A3 (en) 1982-02-15
ATA19878A (de) 1980-04-15
YU40025B (en) 1985-06-30
CA1085393A (en) 1980-09-09
DE2802238A1 (de) 1978-07-20
IT7847689A0 (it) 1978-01-18
NO154347C (no) 1986-09-03
RO74590A (ro) 1981-08-30
NO154347B (no) 1986-05-26
IN146260B (en, 2012) 1979-04-07
IT1103254B (it) 1985-10-14
PL116547B1 (en) 1981-06-30
BR7800294A (pt) 1978-09-05
HU180934B (en) 1983-05-30
GB1560527A (en) 1980-02-06
SE7800613L (sv) 1978-07-20
FR2378021A1 (fr) 1978-08-18
CS202004B2 (en) 1980-12-31
AT359512B (de) 1980-11-10
AR220116A1 (es) 1980-10-15
SE438148B (sv) 1985-04-01
PL204064A1 (pl) 1979-06-04
MX5805E (es) 1984-07-26

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DSM N.V., HEERLEN, NL

8328 Change in the person/name/address of the agent

Free format text: ZUMSTEIN, F., DIPL.-CHEM. DR.RER.NAT. KLINGSEISEN, F., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee