GB1217442A - Process for producing high analysis ammonium polyphosphates - Google Patents
Process for producing high analysis ammonium polyphosphatesInfo
- Publication number
- GB1217442A GB1217442A GB1022269A GB1022269A GB1217442A GB 1217442 A GB1217442 A GB 1217442A GB 1022269 A GB1022269 A GB 1022269A GB 1022269 A GB1022269 A GB 1022269A GB 1217442 A GB1217442 A GB 1217442A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- superphosphoric
- ammonium polyphosphates
- acids
- ammonium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/06—Alkali and alkaline earth meta- or polyphosphate fertilisers
-
- 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
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
-
- 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
- C01B25/26—Phosphates
- C01B25/38—Condensed phosphates
- C01B25/40—Polyphosphates
- C01B25/405—Polyphosphates of ammonium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
1,217,442. Ammonium polyphosphates. TENNESSEE CORP. 26 Feb., 1969, No. 10222/69. Heading C1A. Solid ammonium polyphosphates are prepared from superphosphoric acids, defined as acids containing polyphosphoric acids and water, by (a) feeding superphosphoric acid containing water, to a reactor, (b) reacting the acid with anhydrous NH 3 below 210‹ F. (99‹ C.) and (c) drawing off as vapour the water produced. The superphosphoric acid may be prediluted, inhibiting the resultant hydrolysis to orthophosphoric acid by keeping the time between dilution and ammoniation below 3 minutes and the temperature of the acid not above 135‹ F. The reacting superphosphoric acid preferably has the concentration of 60- 80% based on P 2 O 5 , or if prediluted 49-60%. The bed of the reactor is preferably below 185‹ F. Impurities, from the phosphoric acid, are soluble in ammonium polyphosphate solutions but not in ammonium orthophosphate solutions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1022269A GB1217442A (en) | 1969-02-26 | 1969-02-26 | Process for producing high analysis ammonium polyphosphates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1022269A GB1217442A (en) | 1969-02-26 | 1969-02-26 | Process for producing high analysis ammonium polyphosphates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1217442A true GB1217442A (en) | 1970-12-31 |
Family
ID=9963862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1022269A Expired GB1217442A (en) | 1969-02-26 | 1969-02-26 | Process for producing high analysis ammonium polyphosphates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1217442A (en) |
-
1969
- 1969-02-26 GB GB1022269A patent/GB1217442A/en not_active Expired
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