GB1235055A - Process for drying urea solutions - Google Patents
Process for drying urea solutionsInfo
- Publication number
- GB1235055A GB1235055A GB5355769A GB5355769A GB1235055A GB 1235055 A GB1235055 A GB 1235055A GB 5355769 A GB5355769 A GB 5355769A GB 5355769 A GB5355769 A GB 5355769A GB 1235055 A GB1235055 A GB 1235055A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- heated
- solution
- tubes
- water
- 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
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,235,055. Evaporators, film type; removal of water from urea solutions. WHITLOCK MFG., CO. 31 Oct., 1969, No. 53557/69. Addition 1,193,221. Heading B1B. [Also in Division C2] In a process for drying an aqueous solution of urea, as claimed in parent Specification, wherein the solution is passed in film-form down the interior surface of vertically-disposed heated tubes and then flows downwardly through packing while a stream of heated inert gas, e.g. air, is passed upwardly through the packing and the tubes, the temperature range for heating the stream of inert gas is extended from 310‹ to 350‹F., and the temperature range to which the urea solution is heated is extended below 280‹ to 260‹F. In an example, a solution of urea containing 31% water is dried by passing it through tubes heated by steam at 295.6‹F., and introducing air at 340‹F into the apparatus. The urea discharged from the apparatus has a temperature of 279‹F and contains 0.29% water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5355769A GB1235055A (en) | 1967-01-20 | 1969-10-31 | Process for drying urea solutions |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61057267A | 1967-01-20 | 1967-01-20 | |
| GB5355769A GB1235055A (en) | 1967-01-20 | 1969-10-31 | Process for drying urea solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1235055A true GB1235055A (en) | 1971-06-09 |
Family
ID=26267288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5355769A Expired GB1235055A (en) | 1967-01-20 | 1969-10-31 | Process for drying urea solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1235055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002425A1 (en) * | 1979-05-01 | 1980-11-13 | Toyo Engineering Corp | Process for concentrating aqueous urea solution |
-
1969
- 1969-10-31 GB GB5355769A patent/GB1235055A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002425A1 (en) * | 1979-05-01 | 1980-11-13 | Toyo Engineering Corp | Process for concentrating aqueous urea solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |