GB669671A - Production of gaseous hydrogen chloride from an aqueous solution thereof - Google Patents
Production of gaseous hydrogen chloride from an aqueous solution thereofInfo
- Publication number
- GB669671A GB669671A GB25461/49A GB2546149A GB669671A GB 669671 A GB669671 A GB 669671A GB 25461/49 A GB25461/49 A GB 25461/49A GB 2546149 A GB2546149 A GB 2546149A GB 669671 A GB669671 A GB 669671A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- hydrogen chloride
- section
- solution
- steam
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Gases (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Gaseous hydrogen chloride is produced from an aqueous solution thereof containing a higher percentage of hydrogen chloride than an azeotropic mixture of the same by feeding the solution into the upper portion of a fractionating column wherein it is contacted with ascending steam which is <PICT:0669671/III/1> introduced or generated at the lower portion of the column and with an aqueous solution of a hygroscopic salt which is introduced at an intermediate portion of the column. The column 3 is constructed, e.g. of impervious carbon or graphite, reinforced resins, stoneware, or glass enamelled material and comprises a top packed section 5, a top open section 4, an intermediate packed section 6, an intermediate open section 7, a bottom packed section 8 and a reservoir 9 for effluent salt solution. Hydrogen chloride solution is fed into section 4 and falls via a distributer plate 10 into section 6 where hydrogen chloride gas is stripped out by ascending steam fed via a pipe 32 into a vapour space 11 above reservoir 9. The resultant substantially constant boiling point mixture drips through a perforated plate 12 onto a distributer plate 13 where it is mixed with a concentrated solution of a hygroscopic salt (e.g. calcium lithium, zinc, magnesium or ferric chloride) fed through a pipe 14 and as a result hydrogen chloride gas is salted out. The resultant salt and hydrogen chloride solution falls down section 8 where hydrogen chloride gas is stripped out by ascending steam and the diluted salt solution from reservoir 9 is withdrawn and recycled to the column via a neutralizing tank 16 and an evaporator 20. Hydrogen chloride gas and moisture are withdrawn from the top of the column via a pipe 23 and pass through a water-cooled condenser 24, a refrigerated after-cooler 25 and a mist separator 26 the condensed acid from which is fed back to the column via reflux lines 27 and 28. The column may be operated at sub- or super-atmospheric pressures, the preferred range being 10-60 p.s.i. absolute. If desired the steam introduced via pipe 52 may be steam from the evaporator 20. Alternatively steam may be generated within the column by placing heating surfaces, e.g. of tantalum, in the bottom of the column. U.S.A. Specification 2,357,095 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US669671XA | 1949-05-03 | 1949-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB669671A true GB669671A (en) | 1952-04-09 |
Family
ID=22072877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25461/49A Expired GB669671A (en) | 1949-05-03 | 1949-10-04 | Production of gaseous hydrogen chloride from an aqueous solution thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB669671A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2765049A (en) * | 1954-02-01 | 1956-10-02 | Columbia Southern Chem Corp | Production of hci |
WO2018002342A1 (en) * | 2016-06-30 | 2018-01-04 | Covestro Deutschland Ag | A method and a system for separating and treating impurities from a hydrogen chloride liquid mixture |
CN110510579A (en) * | 2019-07-15 | 2019-11-29 | 杭州众立化工科技有限公司 | A kind of device and technique parsing separating hydrogen chloride and water from hydrochloric acid |
US10494258B2 (en) | 2012-10-19 | 2019-12-03 | Sgl Carbon Se | Method and installation for concentrating aqueous hydrogen halide solutions |
WO2022018076A1 (en) | 2020-07-22 | 2022-01-27 | Sgl Carbon Se | High pressure desorption of hydrogen chloride gas |
-
1949
- 1949-10-04 GB GB25461/49A patent/GB669671A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2765049A (en) * | 1954-02-01 | 1956-10-02 | Columbia Southern Chem Corp | Production of hci |
US10494258B2 (en) | 2012-10-19 | 2019-12-03 | Sgl Carbon Se | Method and installation for concentrating aqueous hydrogen halide solutions |
EP2909132B1 (en) * | 2012-10-19 | 2020-06-17 | SGL Carbon SE | Method for concentrating aqueous hydrogen halide solutions |
WO2018002342A1 (en) * | 2016-06-30 | 2018-01-04 | Covestro Deutschland Ag | A method and a system for separating and treating impurities from a hydrogen chloride liquid mixture |
CN107556215A (en) * | 2016-06-30 | 2018-01-09 | 科思创聚合物(中国)有限公司 | The method and system of impurity is separated and handled from hydrogen chloride liquid mixture |
US11267703B2 (en) | 2016-06-30 | 2022-03-08 | Covestro Deutschland Ag | Method and a system for separating and treating impurities from a hydrogen chloride liquid mixture |
CN107556215B (en) * | 2016-06-30 | 2022-04-19 | 科思创德国股份有限公司 | Method and system for separating and treating impurities from hydrogen chloride liquid mixture |
CN110510579A (en) * | 2019-07-15 | 2019-11-29 | 杭州众立化工科技有限公司 | A kind of device and technique parsing separating hydrogen chloride and water from hydrochloric acid |
WO2022018076A1 (en) | 2020-07-22 | 2022-01-27 | Sgl Carbon Se | High pressure desorption of hydrogen chloride gas |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2081322A (en) | Process and apparatus for conducting chemical reactions | |
ES427147A1 (en) | Production of ethylene dichloride | |
US2381994A (en) | Production of anhydrous magnesium chloride | |
GB669671A (en) | Production of gaseous hydrogen chloride from an aqueous solution thereof | |
US3779870A (en) | RECOVERY OF ANHYDROUS HCl GAS BY EXTRACTIVE DISTILLATION WITH A HALIDE SALT | |
DK172421B1 (en) | Process for the synthesis of ferric chloride | |
GB948788A (en) | Improvements in or relating to sub-halide distillation process for aluminium | |
HUT71090A (en) | Process for pressurized producing alkanesulfonyl chloride and alkanesulfonic acid | |
US7919657B2 (en) | Process for dehydration of hexafluoroacetone hydrate | |
US3065280A (en) | Production of methyl chloroform | |
GB1123184A (en) | Improved method for recovering alumina from aluminate liquor | |
US1932674A (en) | Process for the manufacture of ammonium sulphate | |
US3527790A (en) | Continuous process for the production of esters of isopropanol | |
US3173963A (en) | Chlorinated hydrocarbon production | |
ES377113A1 (en) | Process for the production of vinyl chloride from 1,2-dichloroethane | |
US2740692A (en) | Manufacture of hydrazine | |
US2830070A (en) | Preparation of trimethyl borate | |
US2745868A (en) | Process for the production of trichloroacetonitrile | |
US2765049A (en) | Production of hci | |
GB788421A (en) | Production of gaseous hydrogen chloride from aqueous hydrochloric acid by distillation | |
US3105846A (en) | Process for producing aryl phosphate esters | |
GB648706A (en) | Improvements in or relating to the distillation of hydrochloric acid | |
GB817739A (en) | Process of concentrating nitric acid and apparatus therefor | |
US3763019A (en) | Process for dehydrating acid halide azeotropes with lithium salts | |
US2293772A (en) | Alpha-beta-dichloro-meta-tolylethane and process for making same |