GB1081892A - Improvements relating to the production of phosphoric acids - Google Patents
Improvements relating to the production of phosphoric acidsInfo
- Publication number
- GB1081892A GB1081892A GB2952364A GB2952364A GB1081892A GB 1081892 A GB1081892 A GB 1081892A GB 2952364 A GB2952364 A GB 2952364A GB 2952364 A GB2952364 A GB 2952364A GB 1081892 A GB1081892 A GB 1081892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- zone
- heating zone
- concentration
- content
- 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
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/24—Condensed phosphoric acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Phosphoric acids of high P2O5 content, i.e. not less than 68% w/w on an impurity-free basis, are prepared by continuously feeding a wet-process phosphoric acid to a first heating zone from which is continuously withdrawn a more concentrated acid having a P2O5 content of 67-72%, and passing this to a second heating zone, continuously withdrawing the final acid of high P2O5 concentration, e.g. not less than 76% P2O5. The temperatures of the heating zones are maintained at the boiling-points of the acids therein by releasing "hot combustion products" into the zones. Preferably, they are released into at least the second zone through a vertical dip tube so as to maintain a stable bubble thereof at its lower end, and the acid in the zone is preferably caused to flow in a toroidal path surrounding the bubble. The volume of liquid in at least the second heating zone is preferably related to the volumetric flow rate of the acid through it such that concentration of acid is rapidly effected.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2952364A GB1081892A (en) | 1964-07-21 | 1964-07-21 | Improvements relating to the production of phosphoric acids |
SE9644/65A SE312540B (en) | 1964-07-21 | 1965-07-21 | |
NO15904465A NO115654B (en) | 1964-07-21 | 1965-07-21 | |
DK374665A DK116275B (en) | 1964-07-21 | 1965-07-21 | Process for concentrating phosphoric acid. |
FR25484A FR1506267A (en) | 1964-07-21 | 1965-07-21 | Improvements in processes for the production of phosphoric acids with a high phosphorus pentoxide content |
FI175265A FI43183B (en) | 1964-07-21 | 1965-07-21 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2952364A GB1081892A (en) | 1964-07-21 | 1964-07-21 | Improvements relating to the production of phosphoric acids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1081892A true GB1081892A (en) | 1967-09-06 |
Family
ID=10292896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2952364A Expired GB1081892A (en) | 1964-07-21 | 1964-07-21 | Improvements relating to the production of phosphoric acids |
Country Status (5)
Country | Link |
---|---|
DK (1) | DK116275B (en) |
FI (1) | FI43183B (en) |
FR (1) | FR1506267A (en) |
GB (1) | GB1081892A (en) |
NO (1) | NO115654B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4215098A (en) | 1978-04-26 | 1980-07-29 | Albright & Wilson Limited | Purification of wet process phosphoric acid |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1601474A (en) * | 1977-04-12 | 1981-10-28 | Albright & Wilson | Purification of wet process phosphoric acid |
-
1964
- 1964-07-21 GB GB2952364A patent/GB1081892A/en not_active Expired
-
1965
- 1965-07-21 FI FI175265A patent/FI43183B/fi active
- 1965-07-21 FR FR25484A patent/FR1506267A/en not_active Expired
- 1965-07-21 DK DK374665A patent/DK116275B/en unknown
- 1965-07-21 NO NO15904465A patent/NO115654B/no unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4215098A (en) | 1978-04-26 | 1980-07-29 | Albright & Wilson Limited | Purification of wet process phosphoric acid |
Also Published As
Publication number | Publication date |
---|---|
FR1506267A (en) | 1967-12-22 |
DK116275B (en) | 1969-12-29 |
FI43183B (en) | 1970-11-02 |
NO115654B (en) | 1968-11-11 |
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