GB1197743A - Hydrazine. - Google Patents
Hydrazine.Info
- Publication number
- GB1197743A GB1197743A GB1620067A GB1620067A GB1197743A GB 1197743 A GB1197743 A GB 1197743A GB 1620067 A GB1620067 A GB 1620067A GB 1620067 A GB1620067 A GB 1620067A GB 1197743 A GB1197743 A GB 1197743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl ethyl
- ethyl ketone
- hydrazine
- sump
- hydrazone
- 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
- 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)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,197,743. Methyl ethyl ketone. FISONS INDUSTRIAL CHEMICALS Ltd. 25 March, 1968 [8 April, 1967], No. 16200/67. Heading C2C. [Also in Division C1] In the preparation of hydrazine and methyl ethyl ketone a two-phase mixture of 1À5-2À5 parts by weight of water and 1 part by weight of methyl ethyl ketone azine is fed to an inlet point of a fractionating column (operated at 3-15 atmos. above atmospheric pressure and at 150-200‹ C.) to form a mixture of methyl ethyl ketazine, methyl ethyl ketone, hydrazine and methyl ethyl ketone hydrazone, the methyl ethyl ketone being recovered from above the feed point and the remaining azine and hydrazone being stripped from the column by steam, at 6-8 theoretical plates below the feed point, to leave an aqueous solution of N 2 H 4 in the sump, the residence time in the sump (preferably 1-2 hours) being sufficient to allow conversion of residual ketazine and hydrazone to hydrazine. Preferably the 2-phase mixture is heated to 150-200‹ C. before feeding to the column, and the aqueous solution is withdrawn from the sump and distilled to recover the hydrazine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1620067A GB1197743A (en) | 1967-04-08 | 1967-04-08 | Hydrazine. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1620067A GB1197743A (en) | 1967-04-08 | 1967-04-08 | Hydrazine. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1197743A true GB1197743A (en) | 1970-07-08 |
Family
ID=10072978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1620067A Expired GB1197743A (en) | 1967-04-08 | 1967-04-08 | Hydrazine. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1197743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2787437A1 (en) * | 1998-12-22 | 2000-06-23 | Atochem Elf Sa | Fabrication of hydrazine by hydrolysing an azine |
-
1967
- 1967-04-08 GB GB1620067A patent/GB1197743A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2787437A1 (en) * | 1998-12-22 | 2000-06-23 | Atochem Elf Sa | Fabrication of hydrazine by hydrolysing an azine |
| WO2000037357A1 (en) * | 1998-12-22 | 2000-06-29 | Atofina | Method for making a hydrazine by hydrolysing an azine |
| US6759023B1 (en) | 1998-12-22 | 2004-07-06 | Atofina | Method for making a hydrazine by hydrolysing an azine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |