GB493716A - Process for the recovery of ammonia from used cuprammonium artificial silk precipitation liquors - Google Patents
Process for the recovery of ammonia from used cuprammonium artificial silk precipitation liquorsInfo
- Publication number
- GB493716A GB493716A GB10422/37A GB1042237A GB493716A GB 493716 A GB493716 A GB 493716A GB 10422/37 A GB10422/37 A GB 10422/37A GB 1042237 A GB1042237 A GB 1042237A GB 493716 A GB493716 A GB 493716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steam
- pipe
- ammonia
- liquor
- passes
- 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
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/10—Separation of ammonia from ammonia liquors, e.g. gas liquors
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
- D01F2/04—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts from cuprammonium solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
<PICT:0493716/III/1> Ammonia is recovered from the waste cuprammonium precipitation liquors used in the manufacture of artificial silk, by passing the warm liquor through a countercurrent of steam having a pressure corresponding to the temperature of the liquor, and condensing the mixture of steam and ammonia. The liquor enters the countercurrent apparatus 3 by a pipe 1 and meets the steam supplied through pipes 7 by evaporators 5a, 5b, into which the spent liquor from 3 passes. The steam is drawn off from 5a, 5b by compressors fed with steam by pipes 71, and the mixture of steam and ammonia passes by pipe 8 to a condenser 9, and then to an absorber 10, cooled by fresh precipitation liquor fed thereto by pipe 19. This heated fresh liquor passes by pipe 20 to the pipe 22 leading to the artificial-silk apparatus. The ammonia solution may pass by a heat-exchanger 13 to a rectifying column 14 supplied with steam by a pipe 21 and leading to an end condenser 16.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE493716X | 1936-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493716A true GB493716A (en) | 1938-10-12 |
Family
ID=6544607
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10422/37A Expired GB493716A (en) | 1936-04-11 | 1937-04-12 | Process for the recovery of ammonia from used cuprammonium artificial silk precipitation liquors |
| GB27581/37A Expired GB503550A (en) | 1936-04-11 | 1937-10-11 | Improvements in or relating to the recovery of ammonia from used cuprammonium artificial silk precipitation liquors |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27581/37A Expired GB503550A (en) | 1936-04-11 | 1937-10-11 | Improvements in or relating to the recovery of ammonia from used cuprammonium artificial silk precipitation liquors |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB493716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2707671A (en) * | 1952-11-27 | 1955-05-03 | Asahi Chemical Ind | Ammonia recovery from cuprammonium rayon waste liquors |
| CN111494977A (en) * | 2020-05-19 | 2020-08-07 | 上海盛剑环境系统科技股份有限公司 | Stripping waste liquid recovery system and recovery method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3428426A (en) * | 1966-11-30 | 1969-02-18 | Dixie Chem Products Co | Ammonia stripping process |
-
1937
- 1937-04-12 GB GB10422/37A patent/GB493716A/en not_active Expired
- 1937-10-11 GB GB27581/37A patent/GB503550A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2707671A (en) * | 1952-11-27 | 1955-05-03 | Asahi Chemical Ind | Ammonia recovery from cuprammonium rayon waste liquors |
| CN111494977A (en) * | 2020-05-19 | 2020-08-07 | 上海盛剑环境系统科技股份有限公司 | Stripping waste liquid recovery system and recovery method |
| CN111494977B (en) * | 2020-05-19 | 2023-08-25 | 上海盛剑环境系统科技股份有限公司 | Stripping waste liquid recovery system and recovery method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB503550A (en) | 1939-04-11 |
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