IT951067B - Procedimento per produrre acido pirofosforico - Google Patents
Procedimento per produrre acido pirofosforicoInfo
- Publication number
- IT951067B IT951067B IT4851272A IT4851272A IT951067B IT 951067 B IT951067 B IT 951067B IT 4851272 A IT4851272 A IT 4851272A IT 4851272 A IT4851272 A IT 4851272A IT 951067 B IT951067 B IT 951067B
- Authority
- IT
- Italy
- Prior art keywords
- procedure
- producing
- pyrophosphoric acid
- pyrophosphoric
- acid
- 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
- C01B25/24—Condensed phosphoric acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2108857A DE2108857C3 (de) | 1971-02-25 | 1971-02-25 | Verfahren zur Herstellung kristallisierter Pyrophosphorsäure |
Publications (1)
Publication Number | Publication Date |
---|---|
IT951067B true IT951067B (it) | 1973-06-30 |
Family
ID=5799731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT4851272A IT951067B (it) | 1971-02-25 | 1972-02-23 | Procedimento per produrre acido pirofosforico |
Country Status (7)
Country | Link |
---|---|
US (1) | US3853486A (it) |
CA (1) | CA968926A (it) |
DE (1) | DE2108857C3 (it) |
FR (1) | FR2126368B1 (it) |
GB (1) | GB1338986A (it) |
IT (1) | IT951067B (it) |
NL (1) | NL169858C (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1066020A (en) * | 1975-05-15 | 1979-11-13 | John D. Jernigan | Process for obtaining pure orthophosphoric acid from superphosphoric acid |
US4619819A (en) * | 1981-01-07 | 1986-10-28 | James C. Barber And Associates, Inc. | Phosphoric acid composition |
US4655789A (en) * | 1985-05-08 | 1987-04-07 | Freeport Research And Engineering Company | Phosphoric acid crystallization process |
US4655790A (en) * | 1985-05-08 | 1987-04-07 | Freeport Research And Development Company | Phosphoric acid crystallization process |
US4657559A (en) * | 1985-05-08 | 1987-04-14 | Freeport Research And Engineering Company | Process for seed crystal preparation for phosphoric acid crystallization |
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 |
CN113896693B (zh) * | 2021-09-08 | 2024-01-02 | 云南云天化股份有限公司 | 一种聚磷酸哌嗪的制备方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451786A (en) * | 1922-04-19 | 1923-04-17 | William H Ross | Process for the purification of commerical phosphoric acid by crystallization |
DE925465C (de) * | 1944-11-21 | 1955-03-21 | Henkel & Cie Gmbh | Verfahren zur Herstellung von kristallisierter Pyrophosphorsaeure |
US3371992A (en) * | 1965-03-24 | 1968-03-05 | Monsanto Co | Formation of crystalline pyrophosphoric acid |
US3547825A (en) * | 1965-03-24 | 1970-12-15 | Monsanto Co | Crystalline pyrophosphoric acid composition |
US3453075A (en) * | 1966-03-01 | 1969-07-01 | Monsanto Co | Process for manufacture of crystalline pyrophosphoric acid |
-
1971
- 1971-02-25 DE DE2108857A patent/DE2108857C3/de not_active Expired
-
1972
- 1972-02-03 NL NL7201428A patent/NL169858C/xx active Search and Examination
- 1972-02-15 GB GB696172A patent/GB1338986A/en not_active Expired
- 1972-02-23 IT IT4851272A patent/IT951067B/it active
- 1972-02-23 US US22877272 patent/US3853486A/en not_active Expired - Lifetime
- 1972-02-23 FR FR7206155A patent/FR2126368B1/fr not_active Expired
- 1972-02-24 CA CA135,440A patent/CA968926A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2126368B1 (it) | 1977-01-07 |
DE2108857C3 (de) | 1973-09-13 |
GB1338986A (en) | 1973-11-28 |
NL7201428A (it) | 1972-08-29 |
DE2108857A1 (de) | 1972-08-31 |
US3853486A (en) | 1974-12-10 |
FR2126368A1 (it) | 1972-10-06 |
NL169858C (nl) | 1982-09-01 |
CA968926A (en) | 1975-06-10 |
DE2108857B2 (de) | 1973-02-01 |
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