RO69802B - Process for purifying phosphoric acid - Google Patents
Process for purifying phosphoric acidInfo
- Publication number
- RO69802B RO69802B RO85793A RO8579373A RO69802B RO 69802 B RO69802 B RO 69802B RO 85793 A RO85793 A RO 85793A RO 8579373 A RO8579373 A RO 8579373A RO 69802 B RO69802 B RO 69802B
- Authority
- RO
- Romania
- Prior art keywords
- phosphoric acid
- organic phase
- acid
- water
- concentration
- Prior art date
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
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- C01B25/463—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being a ketone or a mixture of ketones
-
- 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
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
-
- 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
-
- 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
- C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine
Abstract
Procedeu de purificare a acidului fosforic obtinut pe cale umeda, prin aducerea în contact a acidului cu un solvent organic nemiscibil cu apa si apoi aducerea în contact a acestei faze organice cu un mediu apos, caracterizat prin aceea ca acidul fosforic este adus în contact cu metilizobutilcetona într-o singura treapta, în raport de greutate de la 0,5 la 2,0 de preferinta, de 1,0 la 1,5:1 fata de acidul obtinut prin procedeul umed, obtinîndu-se o faza cetonica în care concentratia acidului fosforic este de 28...48%, apoi faza organica este spalata cu apa sau cu acid fosforic în concentratie de 30...50% fata de acidul fosforic prezent în faza organica, dupa care faza organica este adusa în contact cu apa sau cu o baza în solutie apoasa într-o singura treapta la temperatura de 20...40 degree C, în scopul de a scoate întreaga cantitate de acid fosforic din faza organica.A process for the purification of the wet-formed phosphoric acid by contacting the acid with a water-immiscible organic solvent and then bringing this organic phase into contact with an aqueous medium, characterized in that the phosphoric acid is contacted with methylisobutylketone in a single step, in a weight ratio of 0.5 to 2.0, preferably 1.0 to 1.5: 1, relative to the acid obtained by the wet process, obtaining a ketone phase in which the concentration of the acid phosphoric acid is 28 ... 48%, then the organic phase is washed with water or phosphoric acid in a concentration of 30 ... 50% relative to the phosphoric acid present in the organic phase, after which the organic phase is brought into contact with water or with a base in aqueous solution in a single step at a temperature of 20 ... 40 ° C, in order to remove the entire amount of phosphoric acid from the organic phase.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1947672A GB1436113A (en) | 1972-04-26 | 1972-04-26 | Purification of phosphoric acid |
| GB4538072 | 1972-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO69802B true RO69802B (en) | 1983-06-30 |
| RO69802A RO69802A (en) | 1983-07-07 |
Family
ID=26254071
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO7385793A RO69802A (en) | 1972-04-26 | 1973-04-26 | PROCESS FOR PURIFYING PHOSPHORIC ACID |
| RO7374626A RO67820A (en) | 1972-04-26 | 1973-04-26 | PROCESS FOR THE PURIFICATION OF PHOSPHORIC ACID |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO7374626A RO67820A (en) | 1972-04-26 | 1973-04-26 | PROCESS FOR THE PURIFICATION OF PHOSPHORIC ACID |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPS4999993A (en) |
| AU (1) | AU8599475A (en) |
| BE (1) | BE798737A (en) |
| CA (1) | CA1004828A (en) |
| CH (1) | CH613916A5 (en) |
| DD (1) | DD109362A5 (en) |
| DE (1) | DE2320877B2 (en) |
| ES (1) | ES414069A1 (en) |
| FI (1) | FI59077C (en) |
| FR (3) | FR2182055B1 (en) |
| GB (1) | GB1436113A (en) |
| IE (1) | IE37549B1 (en) |
| IN (1) | IN140334B (en) |
| MY (1) | MY7800085A (en) |
| NL (1) | NL7305765A (en) |
| NO (1) | NO137082C (en) |
| OA (1) | OA04403A (en) |
| RO (2) | RO69802A (en) |
| SE (1) | SE395263B (en) |
| TR (1) | TR18445A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL48207A (en) * | 1974-10-07 | 1978-12-17 | Pennzoil Co | Production of fluoride-free phosphates |
| CA1139956A (en) * | 1978-10-10 | 1983-01-25 | Mark A. Rose | Process for extracting uranium from crude phosphoric acids |
| DE3246416A1 (en) * | 1982-12-15 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PURIFYING WET METAL PHOSPHORIC ACID |
| DE3246415A1 (en) * | 1982-12-15 | 1984-06-20 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PURIFYING WET METHOD PHOSPHORIC ACID |
| JP2512429Y2 (en) * | 1993-07-12 | 1996-10-02 | 北陸電気工業株式会社 | High voltage resistance pack |
| IT1285694B1 (en) * | 1996-05-08 | 1998-06-18 | Azionaria Costruzioni Acma Spa | METHOD AND UNIT FOR THE TRAINING AND CONVEYANCE OF GROUPS OF PRODUCTS |
| DE19703884C2 (en) | 1997-02-03 | 1999-04-29 | Bk Giulini Chem Gmbh & Co Ohg | Process for purifying wet process phosphoric acid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL298968A (en) | 1963-10-08 | |||
| GB1142719A (en) * | 1968-10-24 | 1969-02-12 | Israel Mining Ind Inst For Res | Phosphoric acid recovery |
| DE2334019C3 (en) * | 1973-07-04 | 1982-11-04 | Hoechst Ag, 6000 Frankfurt | Process for the purification of contaminated aqueous phosphoric acid |
-
1972
- 1972-04-26 GB GB1947672A patent/GB1436113A/en not_active Expired
-
1973
- 1973-04-17 NO NO1639/73A patent/NO137082C/en unknown
- 1973-04-18 IE IE614/73A patent/IE37549B1/en unknown
- 1973-04-24 CA CA170,075A patent/CA1004828A/en not_active Expired
- 1973-04-25 TR TR18445A patent/TR18445A/en unknown
- 1973-04-25 SE SE7305814A patent/SE395263B/en unknown
- 1973-04-25 NL NL7305765A patent/NL7305765A/xx not_active Application Discontinuation
- 1973-04-25 IN IN966/CAL/73A patent/IN140334B/en unknown
- 1973-04-25 FR FR7314935A patent/FR2182055B1/fr not_active Expired
- 1973-04-25 DE DE2320877A patent/DE2320877B2/en not_active Ceased
- 1973-04-25 ES ES414069A patent/ES414069A1/en not_active Expired
- 1973-04-26 RO RO7385793A patent/RO69802A/en unknown
- 1973-04-26 BE BE130427A patent/BE798737A/en unknown
- 1973-04-26 DD DD170600A patent/DD109362A5/xx unknown
- 1973-04-26 JP JP48046871A patent/JPS4999993A/ja active Pending
- 1973-04-26 FI FI1342/73A patent/FI59077C/en active
- 1973-04-26 CH CH599273A patent/CH613916A5/en not_active IP Right Cessation
- 1973-04-26 OA OA54887A patent/OA04403A/en unknown
- 1973-04-26 RO RO7374626A patent/RO67820A/en unknown
-
1975
- 1975-10-24 AU AU85994/75A patent/AU8599475A/en not_active Expired
- 1975-12-11 FR FR7538022A patent/FR2289441A1/en active Granted
- 1975-12-11 FR FR7538023A patent/FR2289442A1/en active Granted
-
1978
- 1978-12-31 MY MY197885A patent/MY7800085A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD109362A5 (en) | 1974-11-05 |
| NL7305765A (en) | 1973-10-30 |
| NO137082C (en) | 1977-12-28 |
| BE798737A (en) | 1973-10-26 |
| IE37549B1 (en) | 1977-08-17 |
| FI59077B (en) | 1981-02-27 |
| RO67820A (en) | 1980-01-15 |
| FR2289442B1 (en) | 1979-02-02 |
| RO69802A (en) | 1983-07-07 |
| IN140334B (en) | 1976-10-16 |
| CH613916A5 (en) | 1979-10-31 |
| FR2182055A1 (en) | 1973-12-07 |
| DE2320877A1 (en) | 1973-11-15 |
| GB1436113A (en) | 1976-05-19 |
| IE37549L (en) | 1973-10-26 |
| CA1004828A (en) | 1977-02-08 |
| DE2320877B2 (en) | 1980-03-20 |
| FI59077C (en) | 1981-06-10 |
| FR2289442A1 (en) | 1976-05-28 |
| ES414069A1 (en) | 1976-05-16 |
| FR2289441B1 (en) | 1979-02-02 |
| FR2182055B1 (en) | 1977-01-07 |
| AU5488473A (en) | 1974-10-31 |
| OA04403A (en) | 1980-02-29 |
| JPS4999993A (en) | 1974-09-20 |
| SE395263B (en) | 1977-08-08 |
| NO137082B (en) | 1977-09-19 |
| AU8599475A (en) | 1975-12-18 |
| FR2289441A1 (en) | 1976-05-28 |
| TR18445A (en) | 1977-02-16 |
| MY7800085A (en) | 1978-12-31 |
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