GB654153A - Preparation of phenol by distillation of products of hydrolysis of monochlorobenzene - Google Patents
Preparation of phenol by distillation of products of hydrolysis of monochlorobenzeneInfo
- Publication number
- GB654153A GB654153A GB17774/47A GB1777447A GB654153A GB 654153 A GB654153 A GB 654153A GB 17774/47 A GB17774/47 A GB 17774/47A GB 1777447 A GB1777447 A GB 1777447A GB 654153 A GB654153 A GB 654153A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- grm
- water
- phenol
- chlorobenzene
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
- C07C37/78—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
- C07C37/02—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis by substitution of halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0654153/III/1> In the preparation of phenol by hydrolysis of chlorobenzene in the presence of cuprous chloride as catalyst, the reaction products comprising phenol, hydrogen chloride and unchanged chlorobenzene and water, are introduced into a distillation column together with further quantities of chlorobenzene and water, the amount of water and conditions of the column being such that vapours of both the binary azeotrope C6H5Cl/H2O and the ternary azeotrope C6H5Cl/H2O/HCl are given off from the top of the column; these vapours are returned to the hydrolyser, preferably after passing through molten cuprous chloride, while phenol and hydrochloric acid are withdrawn from the base of the column. In the example the head of distillation column 2 is maintained at 97 DEG C. and the overhead vapours contain chlorobenzene (13290 grm.), water (5180 grm.) and hydrogen chloride (22 grm.). These vapours are bubbled through molten cuprous chloride in bath 7 and are then introduced into hydrolyser 1 which contains a metal silicate impregnated with cuprous chloride and is maintained at 450 DEG C. Chlorobenzene (1329 grm.) and water (213 grm.) are added at a and b to the vapours leaving the hydrolyzer, and the mixture is then introduced into column 2 which also receives 1769 grm. of water at c. The mixture withdrawn from the base of the column contains phenol (1000 grm.), hydrogen chloride (431 grm.) and water (1768 grm.). This mixture is cooled to atmospheric temperature in decanter 3 where it separates into two layers. The upper layer is introduced into column 4 and the lower layer into column 5; the top of each column being maintained at 107 DEG C. The condensed distillates from columns 4 and 5, which both contain phenol, hydrogen chloride and water, are brought together in decanter 6 where they divide into two layers: the upper layer is refluxed to column 4 and the lower layer to column 5. Phenol is withdrawn from the base of column 4, and hydrochloric acid from the base of column 5. In a second example, decanter 6 is dispensed with, and the distillates from columns 4 and 5 are passed to decanter 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE654153X | 1946-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB654153A true GB654153A (en) | 1951-06-06 |
Family
ID=3876873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17774/47A Expired GB654153A (en) | 1946-07-23 | 1947-07-04 | Preparation of phenol by distillation of products of hydrolysis of monochlorobenzene |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES178978A1 (en) |
| GB (1) | GB654153A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2988573A (en) * | 1958-10-06 | 1961-06-13 | Union Carbide Corp | Process for producing phenol |
| US3221063A (en) * | 1961-08-25 | 1965-11-30 | Hooker Chemical Corp | Distillation in raschig-phenol process |
-
1947
- 1947-07-04 GB GB17774/47A patent/GB654153A/en not_active Expired
- 1947-07-17 ES ES178978A patent/ES178978A1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2988573A (en) * | 1958-10-06 | 1961-06-13 | Union Carbide Corp | Process for producing phenol |
| US3221063A (en) * | 1961-08-25 | 1965-11-30 | Hooker Chemical Corp | Distillation in raschig-phenol process |
Also Published As
| Publication number | Publication date |
|---|---|
| ES178978A1 (en) | 1947-09-16 |
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