DE1545656A1 - Verfahren und Vorrichtung zur Trennung von Melamin - Google Patents

Verfahren und Vorrichtung zur Trennung von Melamin

Info

Publication number
DE1545656A1
DE1545656A1 DE1965C0035077 DEC0035077A DE1545656A1 DE 1545656 A1 DE1545656 A1 DE 1545656A1 DE 1965C0035077 DE1965C0035077 DE 1965C0035077 DE C0035077 A DEC0035077 A DE C0035077A DE 1545656 A1 DE1545656 A1 DE 1545656A1
Authority
DE
Germany
Prior art keywords
melamine
liquid
stream
gas
baffle
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.)
Pending
Application number
DE1965C0035077
Other languages
German (de)
English (en)
Inventor
Marten Jerome Herbert
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.)
Chemical Construction Corp
Original Assignee
Chemical Construction Corp
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 Chemical Construction Corp filed Critical Chemical Construction Corp
Publication of DE1545656A1 publication Critical patent/DE1545656A1/de
Pending 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • 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
    • B01J19/242—Tubular reactors in series
    • 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
    • B01J2219/00121—Controlling the temperature by direct heating or cooling
    • B01J2219/00123—Controlling the temperature by direct heating or cooling adding a temperature modifying medium to the reactants
    • B01J2219/00126—Cryogenic coolants
    • 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
    • B01J2219/00121—Controlling the temperature by direct heating or cooling
    • B01J2219/0013—Controlling the temperature by direct heating or cooling by condensation of reactants
    • 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
    • B01J2219/00132—Controlling the temperature using electric heating or cooling elements
    • B01J2219/00135—Electric resistance heaters
    • 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
    • B01J2219/0015—Controlling the temperature by thermal insulation means
    • B01J2219/00155—Controlling the temperature by thermal insulation means using insulating materials or refractories
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/54—Venturi scrubbers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Water Treatments (AREA)
DE1965C0035077 1964-02-11 1965-02-11 Verfahren und Vorrichtung zur Trennung von Melamin Pending DE1545656A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US344020A US3290308A (en) 1964-02-11 1964-02-11 Synthesis of pure melamine

Publications (1)

Publication Number Publication Date
DE1545656A1 true DE1545656A1 (de) 1969-06-26

Family

ID=23348700

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1965C0035077 Pending DE1545656A1 (de) 1964-02-11 1965-02-11 Verfahren und Vorrichtung zur Trennung von Melamin

Country Status (7)

Country Link
US (2) US3290308A (US06373033-20020416-M00071.png)
BE (1) BE659588A (US06373033-20020416-M00071.png)
DE (1) DE1545656A1 (US06373033-20020416-M00071.png)
FR (1) FR1451252A (US06373033-20020416-M00071.png)
GB (1) GB1101861A (US06373033-20020416-M00071.png)
NL (1) NL6501633A (US06373033-20020416-M00071.png)
SE (1) SE308117B (US06373033-20020416-M00071.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046195A1 (de) * 1980-08-18 1982-02-24 BASF Aktiengesellschaft Verfahren und Vorrichtung zur Abtrennung von flüssigem Harnstoff aus den Abgasen der Melaminsynthese
DE4211763A1 (de) * 1992-04-08 1993-10-14 Chemie Linz Deutschland Vorrichtung zur Abscheidung von Melamin

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6801577A (US06373033-20020416-M00071.png) * 1968-02-02 1969-08-05
US3593968A (en) * 1968-09-26 1971-07-20 Stone & Webster Eng Corp Rapid cooling for high-temperature gas streams
US3615247A (en) * 1968-12-23 1971-10-26 Phillips Petroleum Co Modified combustion zone in a thermally insulated apparatus
NL6919152A (US06373033-20020416-M00071.png) * 1969-12-20 1971-06-22
US3756580A (en) * 1972-01-31 1973-09-04 Peabody Engineering Corp Gas washing apparatus
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
AT397214B (de) * 1992-03-30 1994-02-25 Chemie Linz Gmbh Vorrichtung zur abscheidung von melamin
CN109529397B (zh) * 2018-12-28 2024-07-02 四川金象赛瑞化工股份有限公司 一种凝华结晶设备及结晶方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132143A (en) * 1964-05-05 Process for recovering melamine
US2918467A (en) * 1959-12-22 Production of melamine
US2575497A (en) * 1951-11-20 Sheetsxsheet i
US2755887A (en) * 1956-07-24 Melamine purification
US3310558A (en) * 1967-03-21 Melamine recovery
US2890999A (en) * 1955-11-22 1959-06-16 Exxon Research Engineering Co Quenching fluid coker vapors
US3057700A (en) * 1959-10-12 1962-10-09 Chemical Construction Corp Phosphoric acid process
US3116348A (en) * 1960-07-27 1963-12-31 Cottrell Res Inc Gas treating device
GB916187A (en) * 1960-09-05 1963-01-23 Stamicarbon Process for the preparation of pure melamine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046195A1 (de) * 1980-08-18 1982-02-24 BASF Aktiengesellschaft Verfahren und Vorrichtung zur Abtrennung von flüssigem Harnstoff aus den Abgasen der Melaminsynthese
DE4211763A1 (de) * 1992-04-08 1993-10-14 Chemie Linz Deutschland Vorrichtung zur Abscheidung von Melamin

Also Published As

Publication number Publication date
US3451787A (en) 1969-06-24
NL6501633A (US06373033-20020416-M00071.png) 1965-08-12
US3290308A (en) 1966-12-06
SE308117B (US06373033-20020416-M00071.png) 1969-02-03
GB1101861A (en) 1968-01-31
BE659588A (US06373033-20020416-M00071.png) 1965-08-11
FR1451252A (fr) 1966-01-07

Similar Documents

Publication Publication Date Title
DE2819218C2 (de) Verfahren zur Herstellung von Harnstoff
EP2125706B1 (de) Verfahren zur herstellung von acetoncyanhydrin und dessen folgeprodukten durch gezielte kühlung
DE69422039T2 (de) Verfahren zur herstellung von melamin
EP1781626A2 (de) Hochdruckverfahren zur herstellung von reinem melamin
EP2054369B1 (de) Verfahren und vorrichtung zur herstellung von methacrylsäurealkylestern
EP1461139B1 (de) Verfahren zur reinigung von offgasen einer melaminanlage
DE2348108A1 (de) Verfahren und vorrichtung zur absorption von so tief 3
DE1545656A1 (de) Verfahren und Vorrichtung zur Trennung von Melamin
DE3876156T2 (de) Verfahren zum abschrecken eines reaktionsproduktgases mit methacrylsaeureinhalt und verfahren zum behandeln der abgeschreckten fluessigkeit.
DE69908622T2 (de) Verfahren zur abschreckung gasförmiger acrylnitrilcyanid produktströme
DE69101022T2 (de) Verfahren zur Konzentrierung von Harnstofflösungen unter Vakuum.
DE1670422A1 (de) Verfahren zur Synthetisierung von Melamin
DE1670286A1 (de) Verfahren zur Aufarbeitung der bei der Melaminsynthese anfallenden Abgase
EP2054378B1 (de) Verfahren zur herstellung von cyanhydrinen sowie deren verwendung bei der herstellung von methacrylsäurealkylestern
DE4316320A1 (de) Verfahren zur Herstellung von Natriumperborat-monohydrat
DE2424618A1 (de) Verfahren zur herstellung von harnstoff aus ammoniak und kohlendioxyd
DE1301320B (de) Verfahren zur katalytischen Synthese von Melamin aus Harnstoff
DE2060929A1 (de) Verfahren zur Abtrennung von Melamin aus einer heissen Synthesemischung,die Melamindampf enthaelt
DE1468628A1 (de) Verfahren zur Herstellung von Harnstoff aus Kohlendioxyd und Ammoniak
DE3302833C2 (de) Verfahren zur Herstellung von Melamin
DE1277841B (de) Verfahren zur Herstellung von Harnstoffen
DE2525781A1 (de) Verfahren zur kuehlung der reaktionsabgase der melaminsynthese
DE1518466C3 (de) Verfahren zur Gewinnung und Rückführung von Ammoniak und Kohlendioxid in Harnstoffsyntheseabströmen
DE2222461A1 (de) Verfahren und Vorrichtung zur Zersetzung von Ammoniumkarbamat
AT258881B (de) Verfahren zur Herstellung eines cyanursäurearmen Cyansäure-Ammoniak-Gasgemisches aus Harnstoff