GB215716A - Continuous process for the dehydration of organic liquids other than ethyl alcohol - Google Patents
Continuous process for the dehydration of organic liquids other than ethyl alcoholInfo
- Publication number
- GB215716A GB215716A GB1798/24A GB179824A GB215716A GB 215716 A GB215716 A GB 215716A GB 1798/24 A GB1798/24 A GB 1798/24A GB 179824 A GB179824 A GB 179824A GB 215716 A GB215716 A GB 215716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- distilling
- trichlorethylene
- glycerine
- toluene
- 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
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/36—Azeotropic distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
215,716. Soc. Ricard, Allenet, et Cie. May 9, 1923, [Convention date]. Alcoholic liquids, distilling; glycerine, concentrating. - Organic liquids are dehydrated by distilling in presence of a liquid which yields a vaporous mixture containing water vapour at a lower temperature than the boiling points of the constituents, forming, on condensation, a distillate which separates into two layers, the layer containing the greater proportion of the added liquid being returned to the distilling- apparatus. Suitable liquids are benzene, toluene, xylene, solvent naphtha, esters, hydrocarbons, and chlorinated derivatives such as trichlorethylene, and nitro compounds, such as nitrobenzene, nitrocyclohexane, and nitromethane. In dehydrating glycerine, toluene is placed on the plates of a column A heated by steam coils S', S<2>, S<3> to obtain a maximum temperature of 120‹ C., and glycerine is supplied by a pipe a. Vapours containing toluene and water pass at about 83.7‹ C. to a condenser C. The condensate separates into two layers in a vessel D. The lower layer of water is discharged through a pipe f and the upper layer of toluene is returned to the column by a pipe n. Dehydrated glycerine is withdrawn from the base of the column A through a cooler H. In dehydrating propyl alcohol by distilling in presence of trichlorethylene, both the upper and lower layers in the separating vessel D contain substantial proportions of propyl alcohol. The lower layer containing mainly trichlorethylene is returned to the column A, and the upper layer is passed in succession through two small distilling columns the first of which yields vapours mainly of trichlorethylene which are passed into the pipe b, and the second yields, as vapours, propyl alcohol which is passed to the column A, and, as residual liquid, water which is discharged from the base of the column. Specifications 159,880, 206,747, 213,985 and 214,581 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR578306T | 1923-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB215716A true GB215716A (en) | 1925-01-29 |
Family
ID=8955312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1798/24A Expired GB215716A (en) | 1923-05-09 | 1924-01-22 | Continuous process for the dehydration of organic liquids other than ethyl alcohol |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR578306A (en) |
| GB (1) | GB215716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597354A (en) * | 2015-11-16 | 2016-05-25 | 山东宝源化工股份有限公司 | Nitromethane reduced pressure distillation system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0902550B1 (en) * | 2009-01-05 | 2018-04-24 | Senai/dr-ba-serviço Nacional De Aprendizagem Industrial, Departamento Regional Da Bahia | BLOND GLYCERIN PURIFICATION PROCESS, FROM BIODIESEL TRANSESTERIFICATION |
-
1923
- 1923-05-09 FR FR578306D patent/FR578306A/en not_active Expired
-
1924
- 1924-01-22 GB GB1798/24A patent/GB215716A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597354A (en) * | 2015-11-16 | 2016-05-25 | 山东宝源化工股份有限公司 | Nitromethane reduced pressure distillation system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR578306A (en) | 1924-09-23 |
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