IE40576B1 - Purified phosphoric acid and its production - Google Patents
Purified phosphoric acid and its productionInfo
- Publication number
- IE40576B1 IE40576B1 IE19775A IE19775A IE40576B1 IE 40576 B1 IE40576 B1 IE 40576B1 IE 19775 A IE19775 A IE 19775A IE 19775 A IE19775 A IE 19775A IE 40576 B1 IE40576 B1 IE 40576B1
- Authority
- IE
- Ireland
- Prior art keywords
- phosphoric acid
- aqueous
- water
- organic
- organic solvent
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title abstract 22
- 229910000147 aluminium phosphate Inorganic materials 0.000 title abstract 10
- 239000003960 organic solvent Substances 0.000 abstract 4
- 239000000243 solution Substances 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 229910001868 water Inorganic materials 0.000 abstract 4
- 239000007864 aqueous solution Substances 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 2
- 239000008346 aqueous phase Substances 0.000 abstract 2
- 229910001424 calcium ion Inorganic materials 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 abstract 2
- 239000012074 organic phase Substances 0.000 abstract 2
- 239000010452 phosphate Substances 0.000 abstract 2
- -1 sulphate ions Chemical class 0.000 abstract 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 239000001506 calcium phosphate Substances 0.000 abstract 1
- 229910000389 calcium phosphate Inorganic materials 0.000 abstract 1
- 235000011010 calcium phosphates Nutrition 0.000 abstract 1
- 229940035429 isobutyl alcohol Drugs 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 229940085991 phosphate ion Drugs 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000001488 sodium phosphate Substances 0.000 abstract 1
- 229910000162 sodium phosphate Inorganic materials 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 1
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1472970 Purified phosphoric acid RHONEPOULENC INDUSTRIES 31 Jan 1975 [1 Feb 1974] 4336/75 Heading C1A Very pure phosphoric acid solutions are prepared by the-counter-current extraction of wetprocess phosphoric acid solution in the presence of sulphuric acid and water by means of a waterimmiscible organic solvent, contacting the resulting organic phosphoric acid solution with an aqueous solution containing phosphate and calcium ions (prepared from calcium phosphate, phosphoric acid and water such that the Ca<SP>2+</SP> content is from 2-6% by wt. as CaO), in order to precipitate the sulphate ions as suspension in the aqueous solution washing the phosphoric acid in organic solvent with water and separating the organic phase from the aqueous washing phase, and subjecting the organic phase to liquid-liquid contact with an aqueous phase to transfer purified phosphoric acid to the aqueous phase and separating off the organic solvent from the product. The second step is preferably performed continuously within a recycled flow of aqueous phosphate and calcium ion-containing solution. The organic solvent is generally a C 4 -C 8 aliphatic alcohol such as isobutyl alcohol, and it may be collected after the last step, possible purified, before recycling for the extraction step. After the washing step the organic extract may be treated either with water to produce an aqueous solution of phosphoric acid or with a neutralizing compound such as alkali metal or ammoniacal compound, to give a partially neutralized phosphoric acid, e.g. (mono) sodium phosphate.
[GB1472970A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7403399A FR2259787B1 (en) | 1974-02-01 | 1974-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE40576L IE40576L (en) | 1975-08-01 |
| IE40576B1 true IE40576B1 (en) | 1979-07-04 |
Family
ID=9134358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE19775A IE40576B1 (en) | 1974-02-01 | 1975-01-31 | Purified phosphoric acid and its production |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS50123595A (en) |
| BE (1) | BE825085A (en) |
| CA (1) | CA1043535A (en) |
| DD (1) | DD116446A5 (en) |
| DE (1) | DE2503843B2 (en) |
| ES (1) | ES434309A1 (en) |
| FR (1) | FR2259787B1 (en) |
| GB (1) | GB1472970A (en) |
| IE (1) | IE40576B1 (en) |
| IT (1) | IT1029423B (en) |
| NL (1) | NL7501173A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657189B2 (en) * | 1976-12-17 | 1980-02-07 | Hoechst Ag, 6000 Frankfurt | Process for the purification of NaB process phosphoric acid |
| US4197280A (en) * | 1978-10-02 | 1980-04-08 | Stauffer Chemical Company | Wet process phosphoric acid purification |
| IL69426A (en) * | 1983-08-03 | 1986-10-31 | Negev Phosphates Ltd | Process for the manufacture of purified phosphoric acid |
| DE3347421A1 (en) * | 1983-12-29 | 1985-07-11 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PRODUCING LOW FLUORINE ALKALIPHOSPHATE SOLUTIONS |
-
1974
- 1974-02-01 FR FR7403399A patent/FR2259787B1/fr not_active Expired
-
1975
- 1975-01-30 DE DE19752503843 patent/DE2503843B2/en not_active Ceased
- 1975-01-31 JP JP1326775A patent/JPS50123595A/ja active Pending
- 1975-01-31 CA CA219,158A patent/CA1043535A/en not_active Expired
- 1975-01-31 GB GB433675A patent/GB1472970A/en not_active Expired
- 1975-01-31 DD DD18394175A patent/DD116446A5/xx unknown
- 1975-01-31 NL NL7501173A patent/NL7501173A/en not_active Application Discontinuation
- 1975-01-31 IE IE19775A patent/IE40576B1/en unknown
- 1975-01-31 ES ES434309A patent/ES434309A1/en not_active Expired
- 1975-01-31 IT IT4794875A patent/IT1029423B/en active
- 1975-01-31 BE BE152973A patent/BE825085A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2503843B2 (en) | 1979-08-02 |
| FR2259787A1 (en) | 1975-08-29 |
| GB1472970A (en) | 1977-05-11 |
| AU7777475A (en) | 1976-08-05 |
| NL7501173A (en) | 1975-08-05 |
| FR2259787B1 (en) | 1977-09-16 |
| DD116446A5 (en) | 1975-11-20 |
| CA1043535A (en) | 1978-12-05 |
| IE40576L (en) | 1975-08-01 |
| IT1029423B (en) | 1979-03-10 |
| JPS50123595A (en) | 1975-09-29 |
| DE2503843A1 (en) | 1975-08-07 |
| BE825085A (en) | 1975-07-31 |
| ES434309A1 (en) | 1976-11-16 |
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