GB839414A - Process for working up dilute aqueous hydrazine solutions - Google Patents
Process for working up dilute aqueous hydrazine solutionsInfo
- Publication number
- GB839414A GB839414A GB24741/58A GB2474158A GB839414A GB 839414 A GB839414 A GB 839414A GB 24741/58 A GB24741/58 A GB 24741/58A GB 2474158 A GB2474158 A GB 2474158A GB 839414 A GB839414 A GB 839414A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetone
- hydrazine
- solution
- holding
- grams
- 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
- C07C251/00—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C251/72—Hydrazones
-
- 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
- B01D3/02—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in boilers or stills
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/16—Hydrazine; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0839414/III/1> A process for working up dilute aqueous hydrazine solutions comprises the steps of (1) holding an aqueous solution of hydrazine containing acetone for a finite time in the homogeneous liquid state, distilling at least part of said solution; (2) adding acetone to the distillate, holding this treated distillate for a finite time in the homogeneous liquid state and then distilling at least part thereof. In a preferred embodiment, a charging vessel 1 containing 2% hydrazine hydrate aqueous solution and 50 grams/litre of acetone, is held for at least 10 minutes before commencing operations. This solution is then supplied continuously to an upper column 2 and holding vessels 3a and 3b in which the solution may remain for a time, the holding vessels being constantly charged with acetone from vessels 7a and 7b respectively. Sump flask 6 is heated by a gas flame and a discharge substantially free from hydrazine and acetone is withdrawn at such a rate that the flask is always half full. The distillate consisting of 120-160 grams of hydrazine hydrate and 360-480 grams of acetone per litre is collected in the receiver 5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF23648A DE1048884B (en) | 1957-07-31 | 1957-07-31 | Process for the preparation of dilute aqueous hydrazine solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB839414A true GB839414A (en) | 1960-06-29 |
Family
ID=7090929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24741/58A Expired GB839414A (en) | 1957-07-31 | 1958-07-31 | Process for working up dilute aqueous hydrazine solutions |
Country Status (7)
Country | Link |
---|---|
US (1) | US3028316A (en) |
BE (1) | BE569859A (en) |
CH (1) | CH373360A (en) |
DE (1) | DE1048884B (en) |
FR (1) | FR1201027A (en) |
GB (1) | GB839414A (en) |
NL (2) | NL105668C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1174235A (en) * | 1966-03-12 | 1969-12-17 | Fisons Ind Chemicals Ltd Forme | Process and Apparatus for Separation of Acyclic Ketones and Azines |
DE1282617B (en) * | 1966-12-17 | 1968-11-14 | Bayer Ag | Process for the preparation of hydrazine from aqueous ketazine solutions |
DE1273503B (en) * | 1966-12-17 | 1968-07-25 | Bayer Ag | Process for the preparation of hydrazine from aqueous ketazine solutions |
US3520367A (en) * | 1968-10-28 | 1970-07-14 | Phillips Petroleum Co | Method of producing oil using steam condensate trapped in storage zone |
NL1007442C2 (en) * | 1997-11-04 | 1998-12-07 | Josephus Johannes Petrus Maria | Batch-Continuous counter-current equipment with superior performance. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537791A (en) * | 1946-08-17 | 1951-01-09 | Edwal Lab Inc | Method for production of hydrazine and/or hydrazine hydrate |
BE496059A (en) * | 1949-05-31 | |||
US2733195A (en) * | 1954-09-01 | 1956-01-31 | Process for concentrating aqueous |
-
0
- NL NL229958D patent/NL229958A/xx unknown
- NL NL105668D patent/NL105668C/xx active
- BE BE569859D patent/BE569859A/xx unknown
-
1957
- 1957-07-31 DE DEF23648A patent/DE1048884B/en active Pending
-
1958
- 1958-06-19 CH CH6080858A patent/CH373360A/en unknown
- 1958-07-28 US US751543A patent/US3028316A/en not_active Expired - Lifetime
- 1958-07-31 GB GB24741/58A patent/GB839414A/en not_active Expired
- 1958-07-31 FR FR1201027D patent/FR1201027A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR1201027A (en) | 1959-12-28 |
DE1048884B (en) | 1959-01-22 |
BE569859A (en) | |
CH373360A (en) | 1963-11-30 |
NL229958A (en) | |
US3028316A (en) | 1962-04-03 |
NL105668C (en) |
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