TNSN86069A1 - Procede pour la preparation des semences de cristaux pour la cristallisation de l'acide phosphorique - Google Patents
Procede pour la preparation des semences de cristaux pour la cristallisation de l'acide phosphoriqueInfo
- Publication number
- TNSN86069A1 TNSN86069A1 TNTNSN86069A TNSN86069A TNSN86069A1 TN SN86069 A1 TNSN86069 A1 TN SN86069A1 TN TNSN86069 A TNTNSN86069 A TN TNSN86069A TN SN86069 A TNSN86069 A TN SN86069A TN SN86069 A1 TNSN86069 A1 TN SN86069A1
- Authority
- TN
- Tunisia
- Prior art keywords
- phosphoric acid
- cooled
- crystallization
- preparation
- present
- 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
-
- 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
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/222—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen
- C01B25/223—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen only one form of calcium sulfate being formed
- C01B25/226—Hemihydrate process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Saccharide Compounds (AREA)
- Fertilizers (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
L'INVENTION ACTUELLE A RELATION AU PROCEDE DE CRISTALLISATION DE L'ACIDE PHOSPHORIQUE PRENNANT COMME POINT DE DEPART L'ACIDE PHOSPHORIQUE ET ENSUITE AJOUTANT GRANDES QUANTITES DE SEMENCES DE CRISTAUX FINS ET RELATIVEMENT PURS A UN ACIDE SURGELE JUSQU'A SUPERSATURATION. LA CRISTALLISATION PROCEDE ENSUITE SOUS DES CONDITIONS QUI FAVORISENT D'UNE FACON SUBSTANTIELLE L'ACCROISSEMENT DES MOYAUX AJOUTES ET DEFAVORISENT LA FORMATION DE SEMENCES SECONDAIRES. L'INVENTION PRESENTE DECRIT PARTICULIEREMENT UN GENERATEUR DE SEMENCES DE CRISTAUX POUVANT ETRE UTILISE DANS LE PROCEDE SUIVANT DANS LEQUEL UN ACIDE PHOSPHORIQUE DE HAUTE PURETE CONTENANT DE 60 A 66 % P2 O5 EST REFROIDIT A UNE TEMPERATURE DE 5° A 10 °C SOUS LE ZERO OU MOINS, IL EST ENSUITE NUCLEE PENDANT UNE COURTE DUREE DE RESIDENCE PAR AGITATION
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/731,969 US4657559A (en) | 1985-05-08 | 1985-05-08 | Process for seed crystal preparation for phosphoric acid crystallization |
Publications (1)
Publication Number | Publication Date |
---|---|
TNSN86069A1 true TNSN86069A1 (fr) | 1990-01-01 |
Family
ID=24941655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TNTNSN86069A TNSN86069A1 (fr) | 1985-05-08 | 1986-05-08 | Procede pour la preparation des semences de cristaux pour la cristallisation de l'acide phosphorique |
Country Status (11)
Country | Link |
---|---|
US (1) | US4657559A (fr) |
EP (1) | EP0209919B1 (fr) |
JP (1) | JPS6230606A (fr) |
KR (1) | KR930006692B1 (fr) |
AT (1) | ATE44719T1 (fr) |
BR (1) | BR8602054A (fr) |
CA (1) | CA1265315A (fr) |
MA (1) | MA20678A1 (fr) |
PH (1) | PH23763A (fr) |
TN (1) | TNSN86069A1 (fr) |
ZA (1) | ZA863235B (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536792A1 (de) * | 1995-10-02 | 1997-04-03 | Basf Ag | Verfahren zur Stofftrennung aus einem flüssigen Gemisch durch Kristallisation |
FI105909B (fi) * | 1999-03-24 | 2000-10-31 | Kemira Chemicals Oy | Menetelmä fosforihapon laadun parantamiseksi |
US6280494B1 (en) | 1999-07-21 | 2001-08-28 | Imc-Agrico Co. | Method for producing fertilizer grade DAP having an increased nitrogen concentration in a spray column |
US6241796B1 (en) | 1999-07-21 | 2001-06-05 | Imc-Agrico Company | Method for producing fertilizer grade DAP having an increased nitrogen concentration from recycle |
GB2370004A (en) * | 2000-12-18 | 2002-06-19 | Elizabeth Acton | Reducing solids deposition from supercooled solutions using ultrasound |
KR100447941B1 (ko) * | 2001-11-21 | 2004-09-08 | 한국화학연구원 | 고순도 인산 결정 제조방법과 그 장치 |
KR100454101B1 (ko) * | 2002-03-15 | 2004-10-26 | 한국화학연구원 | 인산의 정제방법과 그 장치 |
TWI257915B (en) * | 2004-06-29 | 2006-07-11 | Yung-Hsiung Hsu | Processes for purifying phosphoric acid |
JP2008247733A (ja) | 2007-03-14 | 2008-10-16 | Niro Process Technology Bv | リン酸リッチストリームの精製 |
CN105366656A (zh) * | 2015-12-10 | 2016-03-02 | 四川蓝海化工(集团)有限公司 | 电容级磷酸的纯化方法 |
CN105366655B (zh) * | 2015-12-10 | 2018-01-02 | 四川蓝海化工(集团)有限公司 | 电容级磷酸晶体的制备方法 |
CN110255519A (zh) * | 2019-07-17 | 2019-09-20 | 南京化学试剂股份有限公司 | 一种药用级磷酸的纯化方法 |
CN113716537A (zh) * | 2021-08-31 | 2021-11-30 | 云南云天化股份有限公司 | 一种粉末状固体磷酸的制备方法 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1283398A (en) * | 1918-02-18 | 1918-10-29 | John N Carothers | Process for the direct preparation of crystallized phosphoric acid. |
US2857246A (en) * | 1952-07-16 | 1958-10-21 | Monsanto Chemicals | Process for the purification of phosphorous acid |
US2813777A (en) * | 1953-11-05 | 1957-11-19 | Norsk Hydro Elektrisk | Process for the crystallization of nitrate from a nitric acid solution of crude phosphate |
US2847285A (en) * | 1954-02-09 | 1958-08-12 | Fonte Electr S A | Process for manufacturing crystallized pure and anhydrous phosphoric acid, and installation for carrying out said process |
US3284171A (en) * | 1963-04-06 | 1966-11-08 | Harper Douglas Charles | Process for concentrating orthophosphoric acid with a miscible water entrainer and crystallizing |
US3333929A (en) * | 1966-04-04 | 1967-08-01 | Armour Agricult Chem | Clarification and concentration of wet process phosphoric acid |
JPS4414692Y1 (fr) * | 1966-12-15 | 1969-06-23 | ||
US3642439A (en) * | 1969-10-15 | 1972-02-15 | Allied Chem | Method of separating magnesium from wet-process phosphoric acid |
US3679374A (en) * | 1970-03-31 | 1972-07-25 | Procter & Gamble | Separation of phosphorus acid from mixtures of phosphorus acid and phosphoric acid by crystallization |
CS150818B1 (fr) * | 1970-11-14 | 1973-09-17 | ||
DE2108857C3 (de) * | 1971-02-25 | 1973-09-13 | Knapsack Ag, 5033 Huerth-Knapsack | Verfahren zur Herstellung kristallisierter Pyrophosphorsäure |
GB1436115A (en) * | 1972-10-02 | 1976-05-19 | Albright & Wilson | Crystallization process |
IL49211A (en) * | 1972-10-02 | 1977-07-31 | Albright & Wilson | Process for purifying wet process phorphoric acid |
GB1464536A (fr) * | 1973-02-07 | 1977-02-16 | ||
US3890097A (en) * | 1974-05-06 | 1975-06-17 | Agrico Chem Co | Method of purifying wet process phosphoric acid |
CA1066020A (fr) * | 1975-05-15 | 1979-11-13 | John D. Jernigan | Procede pour l'obtention d'acide phosphorique pur a partir d'acide polyphosphorique |
SU1126202A3 (ru) * | 1976-05-28 | 1984-11-23 | Институт Фор Атомэнерги (Фирма) | Способ непрерывной многостадийной кристаллизации из раствора |
US4299804A (en) * | 1978-03-09 | 1981-11-10 | Agrico Chemical Company | Removal of magnesium and aluminum impurities from wet process phosphoric acid |
US4296082A (en) * | 1978-04-26 | 1981-10-20 | Albright & Wilson Limited | Purification of wet process phosphoric acid |
US4215098A (en) * | 1978-04-26 | 1980-07-29 | Albright & Wilson Limited | Purification of wet process phosphoric acid |
US4243643A (en) * | 1978-10-25 | 1981-01-06 | Occidental Chemical Company | Metallic ion removal from phosphoric acid |
US4278648A (en) * | 1980-03-17 | 1981-07-14 | Johns-Manville Corporation | Method of improving siliceous filter aid dispersion in wet process orthophosphoric acid production systems |
GB2078694B (en) * | 1980-05-21 | 1984-06-13 | Albright & Wilson | Crystallizing phosphoric acid |
US4487750A (en) * | 1983-08-01 | 1984-12-11 | Freeport Minerals Company | Stabilization of wet process phosphoric acid |
-
1985
- 1985-05-08 US US06/731,969 patent/US4657559A/en not_active Expired - Lifetime
-
1986
- 1986-04-25 AT AT86200718T patent/ATE44719T1/de not_active IP Right Cessation
- 1986-04-25 EP EP86200718A patent/EP0209919B1/fr not_active Expired
- 1986-04-30 ZA ZA863235A patent/ZA863235B/xx unknown
- 1986-05-06 KR KR1019860003510A patent/KR930006692B1/ko active IP Right Grant
- 1986-05-07 PH PH33745A patent/PH23763A/en unknown
- 1986-05-07 CA CA000508612A patent/CA1265315A/fr not_active Expired - Lifetime
- 1986-05-07 BR BR8602054A patent/BR8602054A/pt unknown
- 1986-05-08 TN TNTNSN86069A patent/TNSN86069A1/fr unknown
- 1986-05-08 JP JP61105785A patent/JPS6230606A/ja active Pending
- 1986-05-08 MA MA20904A patent/MA20678A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
KR930006692B1 (ko) | 1993-07-22 |
JPS6230606A (ja) | 1987-02-09 |
ZA863235B (en) | 1987-01-28 |
EP0209919A1 (fr) | 1987-01-28 |
ATE44719T1 (de) | 1989-08-15 |
KR860008936A (ko) | 1986-12-19 |
US4657559A (en) | 1987-04-14 |
MA20678A1 (fr) | 1986-12-31 |
BR8602054A (pt) | 1987-01-06 |
CA1265315A (fr) | 1990-02-06 |
PH23763A (en) | 1989-11-03 |
EP0209919B1 (fr) | 1989-07-19 |
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