CS209425B2 - Method of contemporary concentration and cleaning of waterous solution of the phosphoric acid - Google Patents
Method of contemporary concentration and cleaning of waterous solution of the phosphoric acid Download PDFInfo
- Publication number
- CS209425B2 CS209425B2 CS761232A CS123276A CS209425B2 CS 209425 B2 CS209425 B2 CS 209425B2 CS 761232 A CS761232 A CS 761232A CS 123276 A CS123276 A CS 123276A CS 209425 B2 CS209425 B2 CS 209425B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- phosphoric acid
- acid
- enclosure
- solution
- water
- 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
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
- C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S159/00—Concentrating evaporators
- Y10S159/19—Acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Removal Of Specific Substances (AREA)
- Silicon Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7505791A FR2302275A1 (fr) | 1975-02-25 | 1975-02-25 | Procede de concentration et d'epuration simultanees de l'acide phosphorique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS209425B2 true CS209425B2 (en) | 1981-12-31 |
Family
ID=9151686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS761232A CS209425B2 (en) | 1975-02-25 | 1976-02-25 | Method of contemporary concentration and cleaning of waterous solution of the phosphoric acid |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4086069A (nl) |
| BE (1) | BE838367A (nl) |
| CS (1) | CS209425B2 (nl) |
| DD (1) | DD123592A5 (nl) |
| DE (1) | DE2606490A1 (nl) |
| DK (1) | DK137230B (nl) |
| ES (1) | ES445520A1 (nl) |
| FR (1) | FR2302275A1 (nl) |
| GB (1) | GB1529264A (nl) |
| GR (1) | GR58530B (nl) |
| IT (1) | IT1058341B (nl) |
| LU (1) | LU74327A1 (nl) |
| NL (1) | NL7601953A (nl) |
| PL (1) | PL98067B1 (nl) |
| RO (1) | RO68896A (nl) |
| SE (1) | SE415471B (nl) |
| YU (1) | YU34476A (nl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915569A (zh) * | 2021-03-30 | 2021-06-08 | 云南磷化集团有限公司 | 一种用于湿法磷酸渣酸脱氟的泡罩塔及其脱氟方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3276510A (en) * | 1966-10-04 | Concentration op phosphoric acid | ||
| CA600810A (en) * | 1960-06-28 | E. Tynan Donald | Defluorination of phosphoric acid | |
| US3397123A (en) * | 1965-06-03 | 1968-08-13 | Hooker Chemical Corp | Purifying aqueous acid phosphate solutions containing fluorine impurities |
| US3544269A (en) * | 1967-02-27 | 1970-12-01 | Whiting Corp | Method for producing defluorinated phosphoric acid |
| US3718729A (en) * | 1971-03-15 | 1973-02-27 | American Cyanamid Co | Defluorination of wet process phosphoric acid |
| US3764658A (en) * | 1972-01-26 | 1973-10-09 | United States Steel Corp | Production of fluosilicic acid |
-
1975
- 1975-02-25 FR FR7505791A patent/FR2302275A1/fr active Granted
-
1976
- 1976-01-30 GR GR49900A patent/GR58530B/el unknown
- 1976-02-09 US US05/656,466 patent/US4086069A/en not_active Expired - Lifetime
- 1976-02-09 BE BE1007191A patent/BE838367A/xx not_active IP Right Cessation
- 1976-02-11 LU LU74327A patent/LU74327A1/xx unknown
- 1976-02-11 SE SE7601542A patent/SE415471B/xx unknown
- 1976-02-13 YU YU00344/76A patent/YU34476A/xx unknown
- 1976-02-14 RO RO7684822A patent/RO68896A/ro unknown
- 1976-02-18 DE DE19762606490 patent/DE2606490A1/de not_active Withdrawn
- 1976-02-19 GB GB6674/76A patent/GB1529264A/en not_active Expired
- 1976-02-20 IT IT20397/76A patent/IT1058341B/it active
- 1976-02-23 DD DD191425A patent/DD123592A5/xx unknown
- 1976-02-24 DK DK76276AA patent/DK137230B/da not_active IP Right Cessation
- 1976-02-24 PL PL1976187447A patent/PL98067B1/pl unknown
- 1976-02-25 NL NL7601953A patent/NL7601953A/nl not_active Application Discontinuation
- 1976-02-25 ES ES445520A patent/ES445520A1/es not_active Expired
- 1976-02-25 CS CS761232A patent/CS209425B2/cs unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK76276A (nl) | 1976-08-26 |
| DD123592A5 (nl) | 1977-01-05 |
| BE838367A (fr) | 1976-08-09 |
| GR58530B (en) | 1977-10-31 |
| LU74327A1 (nl) | 1976-12-31 |
| FR2302275A1 (fr) | 1976-09-24 |
| DK137230C (nl) | 1978-07-03 |
| NL7601953A (nl) | 1976-08-27 |
| DK137230B (da) | 1978-02-06 |
| RO68896A (ro) | 1980-12-30 |
| GB1529264A (en) | 1978-10-18 |
| US4086069A (en) | 1978-04-25 |
| ES445520A1 (es) | 1977-06-01 |
| PL98067B1 (pl) | 1978-04-29 |
| SE415471B (sv) | 1980-10-06 |
| FR2302275B1 (nl) | 1978-02-03 |
| DE2606490A1 (de) | 1976-09-02 |
| SE7601542L (sv) | 1976-08-26 |
| IT1058341B (it) | 1982-04-10 |
| YU34476A (en) | 1982-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3969485A (en) | Process for converting silicon-and-fluorine-containing waste gases into silicon dioxide and hydrogen fluoride | |
| CN100537416C (zh) | 烷基化废硫酸经高温裂解生产硫酸处理工艺 | |
| US3878291A (en) | Process for the production of metal free chlorosilane by the chlorination or hydrochlorination of ferrosilicon | |
| MXPA03006112A (es) | Preparacion de pentafluoruro de fosforo. | |
| US3104952A (en) | Process for recovering elemental phosphorus | |
| US2631083A (en) | Production of calcium fluoride and silica | |
| US3386892A (en) | Purification of fluosilicic acid solution by distillation with phosphoric acid solution | |
| US2280848A (en) | Making alkali metal phosphates | |
| US20100143236A1 (en) | Preparation of hydrogen fluoride from calcium fluoride and sulfuric acid | |
| CS209425B2 (en) | Method of contemporary concentration and cleaning of waterous solution of the phosphoric acid | |
| US3193350A (en) | Method of producing higher polyphosphoric acids | |
| US3258308A (en) | Process for the treatment of waste gases | |
| US3219410A (en) | Method for recovering hydrogen fluoride from waste gases | |
| US2708620A (en) | Production of phosphoric acid | |
| US1514912A (en) | Process for the fixation of phosphoric acid | |
| US3058803A (en) | Waste recovery process | |
| US2886414A (en) | Process for producing finely-divided silica | |
| US3397123A (en) | Purifying aqueous acid phosphate solutions containing fluorine impurities | |
| US3507614A (en) | Process for production of phosphoric acid | |
| US3157469A (en) | Controlled process for producing alkali metal bifluoride and substantially anhydrous gaseous hydrogen fluoride | |
| DE4116925A1 (de) | Verfahren zur aufbereitung von destillationsrueckstaenden der direkten synthese von chlor- und/oder organochlorsilanen | |
| US3522833A (en) | Production of phosphoric acids | |
| US3246977A (en) | Treatment of waste gases | |
| US2941868A (en) | Purification of crude sulfur | |
| US2026519A (en) | Apparatus for making phosphoric acid |