GB164001A - A process for the treatment of the residuary ammonium chloride lyes derived from the manufacture of sodium carbonate by the ammonia process - Google Patents
A process for the treatment of the residuary ammonium chloride lyes derived from the manufacture of sodium carbonate by the ammonia processInfo
- Publication number
- GB164001A GB164001A GB14900/21A GB1490021A GB164001A GB 164001 A GB164001 A GB 164001A GB 14900/21 A GB14900/21 A GB 14900/21A GB 1490021 A GB1490021 A GB 1490021A GB 164001 A GB164001 A GB 164001A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonate
- liquor
- ammonium
- ammonium chloride
- sodium chloride
- 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
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
- C01D7/18—Preparation by the ammonia-soda process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Residual liquor from the ammonia-soda process containing principally ammonium chloride and carbonates and sodium chloride, is heated to near its boiling point until all the carbonate and free carbon-dioxide are evolved. The ammonium carbonate or mixture of carbonate and bicarbonate is collected in the solid condition; preferably carbon dioxide is introduced if necessary so that all the ammonium is in the form of bicarbonate. The liquor is concentrated to one-third to two-thirds its volume and cooled to below 25 DEG C. when technically pure ammonium chloride crystals are obtained. After filtration, the mother-liquor is again concentrated at its boiling point to one-third to two-thirds its volume, in order to separate sodium chloride. The latter is removed as nearly as possible at 110 DEG C., the boiling point of the solution. The liquor now contains ammonium chloride and sodium chloride in approximately the same proportion as the original solution, and may be treated as above described, but preferably fresh residual liquor is first added. The ammonium chloride contains only small quantities of sodium chloride and may be purified by re-crystallization or sublimation.ALSO:Residual liquor from the ammonia-soda process containing principally ammonium chloride and carbonate and sodium chloride is heated to near its boiling-point until all the ammonium carbonate and free carbon-dioxide are evolved. The ammonium carbonate or mixture of carbonate and bi-carbonate is collected in the solid condition; preferably carbon dioxide is introduced if necessary so that all the ammonium is in the form of bi-carbonate. The liquor is concentrated to one-third to two-thirds its volume and cooled to below 25 DEG C. when technically pure ammonium chloride crystals are obtained. After filtration, the mother-liquor is again concentrated at its boiling point to one-third to two-thirds its volume, in order to separate sodium chloride. The latter is removed as nearly as possible at 110 DEG C., the boiling point of the solution. The liquor now contains ammonium chloride and sodium chloride in approximately the same proportion as the original solution and may be treated as above described, but preferably fresh residual liquor is first added.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH164001X | 1920-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB164001A true GB164001A (en) | 1922-06-08 |
Family
ID=4417032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14900/21A Expired GB164001A (en) | 1920-05-29 | 1921-05-28 | A process for the treatment of the residuary ammonium chloride lyes derived from the manufacture of sodium carbonate by the ammonia process |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR535981A (en) |
| GB (1) | GB164001A (en) |
-
1921
- 1921-05-25 FR FR535981D patent/FR535981A/en not_active Expired
- 1921-05-28 GB GB14900/21A patent/GB164001A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR535981A (en) | 1922-04-24 |
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