GB1037934A - Process for producing a highly concentrated solution of formal aldehyde - Google Patents

Process for producing a highly concentrated solution of formal aldehyde

Info

Publication number
GB1037934A
GB1037934A GB1419164A GB1419164A GB1037934A GB 1037934 A GB1037934 A GB 1037934A GB 1419164 A GB1419164 A GB 1419164A GB 1419164 A GB1419164 A GB 1419164A GB 1037934 A GB1037934 A GB 1037934A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
column
highly concentrated
gas mixture
producing
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
GB1419164A
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.)
Skanska Attikfabriken AB
Original Assignee
Skanska Attikfabriken AB
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 Skanska Attikfabriken AB filed Critical Skanska Attikfabriken AB
Publication of GB1037934A publication Critical patent/GB1037934A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Highly concentrated formaldehyde solutions are produced by feeding a gas mixture containing 3.5-7.5% by volume of formaldehyde and water vapour or steam in approximately the same percentage by volume, the remainder of the gas being substantially oxygen and nitrogen, at 100-300 DEG C. into an absorption column through which an aqueous solution of formaldehyde is circulated so that formaldehyde is absorbed in the circulating solution, maintaining the temperature of the gases leaving the column within the range 40-70 DEG C., and removing from the column an aqueous solution of formaldehyde containing at least 45% by weight of formaldehyde. If desired the formaldehyde in the gases leaving the column may be absorbed in a second absorption column. The gas mixture used as starting material may be the gas mixture from a reactor for the oxidation of methanol to formaldehyde, e.g. using a catalyst comprising molybdenum oxide and iron oxide.
GB1419164A 1963-04-08 1964-04-06 Process for producing a highly concentrated solution of formal aldehyde Expired GB1037934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE383663 1963-04-08

Publications (1)

Publication Number Publication Date
GB1037934A true GB1037934A (en) 1966-08-03

Family

ID=20262967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1419164A Expired GB1037934A (en) 1963-04-08 1964-04-06 Process for producing a highly concentrated solution of formal aldehyde

Country Status (6)

Country Link
JP (1) JPS4843484B1 (en)
BE (1) BE646089A (en)
DK (1) DK121705B (en)
FI (1) FI42710B (en)
GB (1) GB1037934A (en)
NL (1) NL6403694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000024699A1 (en) * 1998-10-27 2000-05-04 Basf Aktiengesellschaft Aqueous formaldehyde solutions with a low tetroxane content

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000024699A1 (en) * 1998-10-27 2000-05-04 Basf Aktiengesellschaft Aqueous formaldehyde solutions with a low tetroxane content
US6471928B1 (en) 1998-10-27 2002-10-29 Basf Aktiengesellschaft Aqueous formaldehyde solutions with a low tetroxane content

Also Published As

Publication number Publication date
NL6403694A (en) 1964-10-09
FI42710B (en) 1970-06-30
JPS4843484B1 (en) 1973-12-19
DK121705B (en) 1971-11-22
BE646089A (en) 1964-07-31

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