ES426753A1 - Purification of phosophoric acid by means of organic solvents - Google Patents
Purification of phosophoric acid by means of organic solventsInfo
- Publication number
- ES426753A1 ES426753A1 ES426753A ES426753A ES426753A1 ES 426753 A1 ES426753 A1 ES 426753A1 ES 426753 A ES426753 A ES 426753A ES 426753 A ES426753 A ES 426753A ES 426753 A1 ES426753 A1 ES 426753A1
- Authority
- ES
- Spain
- Prior art keywords
- phosphoric acid
- boiling point
- solvent
- water
- mixture
- 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
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
Abstract
Process for purifying phosphoric acid, especially phosphoric acid obtained according to a wet process, by extracting phosphoric acid from its aqueous solution with the help of an organic solvent that is not miscible with water or is limitedly miscible in it and is capable of dissolve phosphoric acid, separation of phosphoric acid dissolved in the organic solvent from the extraction residue, and recovery of phosphoric acid from the organic solution, characterized in that the doped aqueous phosphoric acid is mixed in a reaction proportion in volume 1: 3 to 1:30, with a solvent whose boiling point is above the boiling point of water or the azeotropic mixture that is formed from water and the solvent, and the mixture consisting of phosphoric acid and in the solvent it is heated to temperatures between the boiling point of water or the boiling point of the azeotropic mixture, on the one hand, and the boiling point of the solvent, on the other hand, until substantially all of the uncombined water has been removed from the mixture by distillation, before the anhydrous solution is separated from the residue formed resulting from phosphoric acid in the organic solvent. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2334019A DE2334019C3 (en) | 1973-07-04 | 1973-07-04 | Process for the purification of contaminated aqueous phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES426753A1 true ES426753A1 (en) | 1976-07-16 |
Family
ID=5885915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES426753A Expired ES426753A1 (en) | 1973-07-04 | 1974-05-29 | Purification of phosophoric acid by means of organic solvents |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS5239799B2 (en) |
| AT (1) | AT351492B (en) |
| BE (1) | BE817018A (en) |
| BR (1) | BR7405372A (en) |
| CA (1) | CA1020725A (en) |
| CH (1) | CH603488A5 (en) |
| DD (1) | DD112420A5 (en) |
| DE (1) | DE2334019C3 (en) |
| DK (1) | DK350174A (en) |
| EG (1) | EG11909A (en) |
| ES (1) | ES426753A1 (en) |
| FI (1) | FI190074A (en) |
| FR (1) | FR2235876B1 (en) |
| GB (1) | GB1463742A (en) |
| IL (1) | IL45043A (en) |
| IT (1) | IT1018704B (en) |
| NL (1) | NL178408C (en) |
| PH (1) | PH12113A (en) |
| SE (1) | SE397332B (en) |
| SU (1) | SU589902A3 (en) |
| TR (1) | TR19869A (en) |
| ZA (1) | ZA743713B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1436113A (en) * | 1972-04-26 | 1976-05-19 | Albright & Wilson | Purification of phosphoric acid |
| DE2538720C2 (en) * | 1975-08-30 | 1982-11-18 | Giulini Chemie Gmbh, 6700 Ludwigshafen | Process for purifying wet process phosphoric acid |
| FR2447348A1 (en) * | 1979-01-24 | 1980-08-22 | Rhone Poulenc Ind | PROCESS FOR THE PURIFICATION OF AN IMPURE PHOSPHORIC ACID |
| DE3246415A1 (en) * | 1982-12-15 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PURIFYING WET METHOD PHOSPHORIC ACID |
| JPS60155513A (en) * | 1984-01-23 | 1985-08-15 | Mitsui Toatsu Chem Inc | Concentration of phosphoric acid solution |
| DE19703884C2 (en) | 1997-02-03 | 1999-04-29 | Bk Giulini Chem Gmbh & Co Ohg | Process for purifying wet process phosphoric acid |
| JP6143808B2 (en) * | 2015-05-28 | 2017-06-07 | 曽田香料株式会社 | Extraction method of solute components in aqueous solution |
| DE102016212242B4 (en) | 2016-07-05 | 2019-02-07 | Technische Universität Bergakademie Freiberg | Process for the production of phosphoric acid from phosphorus-containing primary and secondary raw materials |
| CN108862223A (en) * | 2018-09-07 | 2018-11-23 | 云南云天化股份有限公司 | A kind of effective method for extending the Phosphoric Acid Concentration system equipment cleaning frequency |
| CN110316891A (en) * | 2019-03-25 | 2019-10-11 | 华颢控股（集团）有限公司 | A kind of preparation method of H acid waste water extraction process and modified aliphatic water reducing agent |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE884358C (en) * | 1951-09-20 | 1953-07-27 | Gerardo Collardin | Process for the purification of technical phosphoric acid |
-
1973
- 1973-07-04 DE DE2334019A patent/DE2334019C3/en not_active Expired
-
1974
- 1974-05-24 NL NLAANVRAGE7407025,A patent/NL178408C/en not_active IP Right Cessation
- 1974-05-29 ES ES426753A patent/ES426753A1/en not_active Expired
- 1974-05-30 CH CH740074A patent/CH603488A5/xx not_active IP Right Cessation
- 1974-06-11 ZA ZA00743713A patent/ZA743713B/en unknown
- 1974-06-14 GB GB2647274A patent/GB1463742A/en not_active Expired
- 1974-06-16 IL IL45043A patent/IL45043A/en unknown
- 1974-06-20 FI FI1900/74A patent/FI190074A/fi unknown
- 1974-06-21 SU SU742035160A patent/SU589902A3/en active
- 1974-06-24 PH PH15977A patent/PH12113A/en unknown
- 1974-06-25 EG EG244/74A patent/EG11909A/en active
- 1974-06-26 AT AT530074A patent/AT351492B/en not_active IP Right Cessation
- 1974-06-27 TR TR19869A patent/TR19869A/en unknown
- 1974-06-27 FR FR7422510A patent/FR2235876B1/fr not_active Expired
- 1974-06-27 SE SE7408508A patent/SE397332B/en unknown
- 1974-06-27 JP JP49073758A patent/JPS5239799B2/ja not_active Expired
- 1974-06-28 CA CA203,698A patent/CA1020725A/en not_active Expired
- 1974-06-28 BE BE146016A patent/BE817018A/en not_active IP Right Cessation
- 1974-06-28 IT IT51807/74A patent/IT1018704B/en active
- 1974-06-28 DD DD179576A patent/DD112420A5/xx unknown
- 1974-06-28 BR BR5372/74A patent/BR7405372A/en unknown
- 1974-06-28 DK DK350174*A patent/DK350174A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FI190074A (en) | 1975-01-05 |
| CH603488A5 (en) | 1978-08-15 |
| FR2235876B1 (en) | 1980-05-23 |
| TR19869A (en) | 1980-03-21 |
| PH12113A (en) | 1978-11-02 |
| ZA743713B (en) | 1975-06-25 |
| GB1463742A (en) | 1977-02-09 |
| JPS5038696A (en) | 1975-04-10 |
| BE817018A (en) | 1974-12-30 |
| DE2334019C3 (en) | 1982-11-04 |
| SU589902A3 (en) | 1978-01-25 |
| CA1020725A (en) | 1977-11-15 |
| DK350174A (en) | 1975-03-17 |
| AT351492B (en) | 1979-07-25 |
| SE397332B (en) | 1977-10-31 |
| DD112420A5 (en) | 1975-04-12 |
| NL178408C (en) | 1986-03-17 |
| ATA530074A (en) | 1979-01-15 |
| BR7405372A (en) | 1976-03-03 |
| JPS5239799B2 (en) | 1977-10-07 |
| DE2334019B2 (en) | 1976-11-04 |
| EG11909A (en) | 1979-12-31 |
| IL45043A0 (en) | 1974-09-10 |
| SE7408508L (en) | 1975-01-07 |
| FR2235876A1 (en) | 1975-01-31 |
| IT1018704B (en) | 1977-10-20 |
| NL7407025A (en) | 1975-01-07 |
| IL45043A (en) | 1977-10-31 |
| DE2334019A1 (en) | 1975-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19930201 |