JPS55164680A - Preparation of trioxane - Google Patents

Preparation of trioxane

Info

Publication number
JPS55164680A
JPS55164680A JP7160779A JP7160779A JPS55164680A JP S55164680 A JPS55164680 A JP S55164680A JP 7160779 A JP7160779 A JP 7160779A JP 7160779 A JP7160779 A JP 7160779A JP S55164680 A JPS55164680 A JP S55164680A
Authority
JP
Japan
Prior art keywords
vapor
trioxane
liquid
solvent
distillation column
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.)
Granted
Application number
JP7160779A
Other languages
Japanese (ja)
Other versions
JPS6340791B2 (en
Inventor
Akitoshi Sugio
Akira Amamiya
Tadashi Kunii
Takeo Suzumori
Mutsuhiko Takeda
Katsumasa Tanaka
Toshikazu Umemura
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP7160779A priority Critical patent/JPS55164680A/en
Publication of JPS55164680A publication Critical patent/JPS55164680A/en
Publication of JPS6340791B2 publication Critical patent/JPS6340791B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the title high-purity compound capable of being directly used for preparation of (co)polymerization without the deposition of polymers, by vaporizing a formaldehyde solution having a specific methanol concentration under heating, supplying a distillation column having a partial condenser with the vapor, and by extracting trioxane in the vapor-liquid equilibrium contact with water.
CONSTITUTION: A formaldehyde aqueous solution having a methanol concentration of 0.8wt% and a formaldehyde concentration of 40W75wt% as a raw material is vaporized in the presence of an acid catalyst to prepare distilled vapor from a reactor. The vapor is introduced to a distillation column with a partial condenser, the distilled vapor from the distillation column is fed to a vapor-liquid contact device and brought into contact with a water-insoluble or slightly soluble solvent in a vapor-liquid equilibrium phase so that water in the vapor is partially removed as an azeotrope with the solvent and trioxane in the vapor is extracted with the solvent. Trioxane extracted solution taken out from the bottom of the vapor-liquid contact device is separated through distillation into the solvent and trioxane. The interior of the partial condenser is maintained at high temperatures and wet with the liquid, and the interior of the vapor liquid contact device is kept in vapor- liquid equilibrium at high temperature so that deposit phenomenon never occurs.
COPYRIGHT: (C)1980,JPO&Japio
JP7160779A 1979-06-07 1979-06-07 Preparation of trioxane Granted JPS55164680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7160779A JPS55164680A (en) 1979-06-07 1979-06-07 Preparation of trioxane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7160779A JPS55164680A (en) 1979-06-07 1979-06-07 Preparation of trioxane

Publications (2)

Publication Number Publication Date
JPS55164680A true JPS55164680A (en) 1980-12-22
JPS6340791B2 JPS6340791B2 (en) 1988-08-12

Family

ID=13465500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7160779A Granted JPS55164680A (en) 1979-06-07 1979-06-07 Preparation of trioxane

Country Status (1)

Country Link
JP (1) JPS55164680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013496A1 (en) * 1994-10-27 1996-05-09 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing trioxane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928197A (en) * 1972-07-13 1974-03-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928197A (en) * 1972-07-13 1974-03-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013496A1 (en) * 1994-10-27 1996-05-09 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing trioxane
US5962702A (en) * 1994-10-27 1999-10-05 Asahi Kasei Kogyo Kabushiki Kaisha Process for production of trioxane
CN1059676C (en) * 1994-10-27 2000-12-20 旭化成工业株式会社 Process for producing trioxane

Also Published As

Publication number Publication date
JPS6340791B2 (en) 1988-08-12

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