GB1034404A - Production of monomeric formaldehyde - Google Patents
Production of monomeric formaldehydeInfo
- Publication number
- GB1034404A GB1034404A GB1585364A GB1585364A GB1034404A GB 1034404 A GB1034404 A GB 1034404A GB 1585364 A GB1585364 A GB 1585364A GB 1585364 A GB1585364 A GB 1585364A GB 1034404 A GB1034404 A GB 1034404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paraformaldehyde
- formaldehyde
- weight
- inert organic
- monomeric formaldehyde
- 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
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
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
-
- 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
-
- 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
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/55—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of oligo- or polymeric oxo-compounds
-
- 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
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
-
- 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
- B01J2219/00164—Controlling or regulating processes controlling the flow
- B01J2219/00166—Controlling or regulating processes controlling the flow controlling the residence time inside the reactor vessel
-
- 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
- B01J2219/182—Details relating to the spatial orientation of the reactor horizontal
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
Monomeric formaldehyde is prepared by conveying a mixture of pulverulent paraformaldehyde and from 1 to 10% by weight, based on the paraformaldehyde, of an inert organic substance, which has a boiling point of 250 DEG to 300 DEG C. and is liquid at 100 DEG to 160 DEG C., by means of a screw conveyer through a heating zone of 100 DEG to 160 DEG C. and discharging, at the end of said zone, gaseous monomeric formaldehyde and 2 to 20% by weight, based upon the supplied paraformaldehyde, of unreacted polymeric formaldehyde. Specified inert organic substances, which are preferably non-solvents for paraformaldehyde, are paraffins, waxes, fats, stearins, fatty acids and fatty alcohols. The pyrolysis may be effected at atmospheric or under reduced pressure and, preferably, the formaldehyde partial pressure is maintained below 300 mm. Hg.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF39604A DE1181191B (en) | 1963-04-27 | 1963-04-27 | Process and device for the continuous production of monomeric formaldehyde |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1034404A true GB1034404A (en) | 1966-06-29 |
Family
ID=7097848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1585364A Expired GB1034404A (en) | 1963-04-27 | 1964-04-16 | Production of monomeric formaldehyde |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE646755A (en) |
DE (1) | DE1181191B (en) |
GB (1) | GB1034404A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3459621A1 (en) * | 2017-09-20 | 2019-03-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for generating formaldehyde monomer vapor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5024940B1 (en) * | 1965-05-12 | 1975-08-20 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR960873A (en) * | 1945-05-01 | 1950-04-27 | ||
US3000960A (en) * | 1959-02-24 | 1961-09-19 | Celanese Corp | Formaldehyde production |
DE1106749B (en) * | 1959-04-21 | 1961-05-18 | Basf Ag | Process for the production of pure formaldehyde |
FR1284203A (en) * | 1961-03-07 | 1962-02-09 | Stamicarbon | Process for the preparation of very pure formaldehyde |
-
1963
- 1963-04-27 DE DEF39604A patent/DE1181191B/en active Pending
-
1964
- 1964-04-16 GB GB1585364A patent/GB1034404A/en not_active Expired
- 1964-04-20 BE BE646755D patent/BE646755A/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3459621A1 (en) * | 2017-09-20 | 2019-03-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for generating formaldehyde monomer vapor |
Also Published As
Publication number | Publication date |
---|---|
DE1181191B (en) | 1964-11-12 |
BE646755A (en) | 1964-08-17 |
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