GB1248686A - Ammonium polyphosphate production - Google Patents
Ammonium polyphosphate productionInfo
- Publication number
- GB1248686A GB1248686A GB741269A GB741269A GB1248686A GB 1248686 A GB1248686 A GB 1248686A GB 741269 A GB741269 A GB 741269A GB 741269 A GB741269 A GB 741269A GB 1248686 A GB1248686 A GB 1248686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- product
- mixing
- pumped
- reactor
- ammonium polyphosphate
- 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)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
1,248,686. Ammonium polyphosphate; purifying H 3 P0 4 . SWIFT AGRICULTURAL CHEMICALS CORP. 11 Feb., 1969 [25 March, 1968 (2)], No. 7412/69. Heading C1A. Ammonium polyphosphate containing at least 20% non-orthophosphate and 64-85% nitrogen plus P 2 O 5 is produced by mixing NH 3 and H 3 PO 4 under conditions providing a Reynolds number of at least 5000 at a temperature sufficiently high to keep the product molten. The reactants are preferably ananhydrous NH 3 and wet process H 3 PO 4 . As shown in the Figure, H 3 PO 4 at at least 250‹ F. and 200-400 p.s.i.g. and NH 3 at at least 100‹ F. are pumped to a mixing line 3. More NH 3 may be added by line 2<SP>1</SP>. The pressurized mixture is flashed through orifice 3<SP>1</SP> causing intense mixing in reactor 3<SP>11</SP>, this mixing being increased by vibrating blade 3<SP>111</SP>. Reactor 3<SP>11</SP> is at 350-600‹ F. The product is then fed to vessel 5 which releases steam and increases polyphosphate content. The product may be removed or pumped to a heat exchanger 7 to reduce the temperature to about 400‹ F. before transfer to ammoniator 9 where it is reacted with liquid NH 3 at 350‹ F. to 500‹ F. The product of reactor 9 is pumped to a solidifier/granulator 11. The fines from the final stage screening are recycled to the granulator. The Specification refers to the purification of wet process H 3 PO 4 by addition of KCl, KNO 3 or KH 2 PO 4 to precipitate Fe and Al present as M 3 KH 14 (PO 4 ) 8 .4H 2 O and addition of CaCl 2 or CaCO 3 to precipitate SO 4 present as CaSO 4 .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71583568A | 1968-03-25 | 1968-03-25 | |
| US71583468A | 1968-03-25 | 1968-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1248686A true GB1248686A (en) | 1971-10-06 |
Family
ID=27109426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB741269A Expired GB1248686A (en) | 1968-03-25 | 1969-02-11 | Ammonium polyphosphate production |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE730421A (en) |
| DE (1) | DE1909438A1 (en) |
| FR (1) | FR2004643A1 (en) |
| GB (1) | GB1248686A (en) |
| NL (1) | NL6904444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179354A (en) * | 2018-11-23 | 2019-01-11 | 中化重庆涪陵化工有限公司 | A kind of ammonium phosphate of slurry concentration process neutralization reaction system |
| CN114249309A (en) * | 2021-12-30 | 2022-03-29 | 瓮福达州化工有限责任公司 | Preparation system and process of high-hygroscopicity polymerized phosphate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT380229B (en) * | 1984-01-30 | 1986-04-25 | Mikhail Vasilievich Lykov | METHOD FOR THE PRODUCTION OF LIQUID COMPLEX fertilizers FROM WET PHOSPHORIC ACID AND GASEOUS AMMONIA |
-
1969
- 1969-02-11 GB GB741269A patent/GB1248686A/en not_active Expired
- 1969-02-25 DE DE19691909438 patent/DE1909438A1/en active Pending
- 1969-03-21 NL NL6904444A patent/NL6904444A/xx unknown
- 1969-03-21 FR FR6908401A patent/FR2004643A1/en not_active Withdrawn
- 1969-03-25 BE BE730421D patent/BE730421A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179354A (en) * | 2018-11-23 | 2019-01-11 | 中化重庆涪陵化工有限公司 | A kind of ammonium phosphate of slurry concentration process neutralization reaction system |
| CN109179354B (en) * | 2018-11-23 | 2023-06-23 | 中化重庆涪陵化工有限公司 | Slurry method ammonium phosphate neutralization reaction system |
| CN114249309A (en) * | 2021-12-30 | 2022-03-29 | 瓮福达州化工有限责任公司 | Preparation system and process of high-hygroscopicity polymerized phosphate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1909438A1 (en) | 1969-11-13 |
| NL6904444A (en) | 1969-09-29 |
| BE730421A (en) | 1969-09-25 |
| FR2004643A1 (en) | 1969-11-28 |
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