UST101901I4 - Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid - Google Patents
Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid Download PDFInfo
- Publication number
- UST101901I4 UST101901I4 US06/285,213 US28521381A UST101901I4 US T101901 I4 UST101901 I4 US T101901I4 US 28521381 A US28521381 A US 28521381A US T101901 I4 UST101901 I4 US T101901I4
- Authority
- US
- United States
- Prior art keywords
- percent
- phosphoric acid
- fluid
- ammonia
- product
- 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.)
- Pending
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Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/23—Solutions
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/27—Dispersions, e.g. suspensions or emulsions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Dispersion Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for the production of fluid fertilizers (suspensions and/or solution type) made from merchant-grade phosphoric acid (50-58 percent P2 O5), sulfuric acid, liquid anhydrous ammonia, and water, wherein liquid ammonia is heated in heat exchange means juxtaposed hot fertilizer product to form gaseous ammonia, which gaseous ammonia, along with phosphoric acid and sulfuric acid, is fed to a pipe-cross reactor wherein a melt of ammonium polyphosphate sulfate is formed, which melt is subsequently mixed with cooled recycled product to produce a fluid fertilizer with N:P2 O5 weight ratios ranging from about 0.3 to 1, which contains from about 10 to 60 percent of its P2 O5 values in the form of polyphosphates and 3 to 8 percent by weight sulfur. About 45 percent of the P2 O5 as polyphosphate is easily attainable in the product with ambient acid feed temperatures, i.e., about 50° F. to 100° F., versus prior-art teachings of only about 15 percent poly formation with preheat of the feed acids. It is a solution when it is produced, and when diluted with 10 percent by weight water, it can be stored at 40° F. without the formation of troublesome crystals. When gelling clay is added, it stores well as a suspension and remains fluid at temperatures as low as -25° F.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/285,213 UST101901I4 (en) | 1981-07-20 | 1981-07-20 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
| US06/336,662 US4377406A (en) | 1981-07-20 | 1982-01-04 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/285,213 UST101901I4 (en) | 1981-07-20 | 1981-07-20 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/336,662 Continuation-In-Part US4377406A (en) | 1981-07-20 | 1982-01-04 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST101901I4 true UST101901I4 (en) | 1982-06-01 |
Family
ID=23093262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/285,213 Pending UST101901I4 (en) | 1981-07-20 | 1981-07-20 | Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST101901I4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269757B1 (en) | 2000-08-03 | 2001-08-07 | Lauren J. Kiest | Method and apparatus for delivering fertilizer to the soil |
-
1981
- 1981-07-20 US US06/285,213 patent/UST101901I4/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269757B1 (en) | 2000-08-03 | 2001-08-07 | Lauren J. Kiest | Method and apparatus for delivering fertilizer to the soil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STPP | Information on status: patent application and granting procedure in general |
Free format text: DEFENSIVE PUBLICATION OR SIR FILE |