UST102201I4 - Granulation of urea phosphate from urea and merchant-grade phosphoric acid - Google Patents
Granulation of urea phosphate from urea and merchant-grade phosphoric acid Download PDFInfo
- Publication number
- UST102201I4 UST102201I4 US06/322,096 US32209681A UST102201I4 US T102201 I4 UST102201 I4 US T102201I4 US 32209681 A US32209681 A US 32209681A US T102201 I4 UST102201 I4 US T102201I4
- Authority
- US
- United States
- Prior art keywords
- urea
- granulation
- phosphate
- merchant
- 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
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title abstract 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 4
- 239000004202 carbamide Substances 0.000 title abstract 4
- 238000005469 granulation Methods 0.000 title abstract 4
- 230000003179 granulation Effects 0.000 title abstract 4
- DZHMRSPXDUUJER-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;dihydrogen phosphate Chemical compound NC(N)=O.OP(O)(O)=O DZHMRSPXDUUJER-UHFFFAOYSA-N 0.000 title abstract 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 title abstract 2
- 238000000034 method Methods 0.000 abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000003337 fertilizer Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 235000019837 monoammonium phosphate Nutrition 0.000 abstract 1
- 239000006012 monoammonium phosphate Substances 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- ZJHHPAUQMCHPRB-UHFFFAOYSA-N urea urea Chemical compound NC(N)=O.NC(N)=O ZJHHPAUQMCHPRB-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B15/00—Organic phosphatic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B19/00—Granulation or pelletisation of phosphatic fertilisers, other than slag
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for direct granulation of unpurified urea phosphate from urea or urea solution and merchant or filter grade wet-process phosphoric acid to produce a product with exceptional satisfactory physical and chemical properties for direct application to the soil or for use in production of fluid fertilizers. The process involves the utilization of sweep air in both the reactor and the granulator to remove water from the heat sensitive urea phosphate mixture to cause granulation of the product. The requirement for product drying with applied heat after granulation is eliminated. The process may be used for producing urea-urea phosphate provided certain precautions are taken to minimize hydrolysis of urea to prevent the resultant ammonia which in turn will react with the acid to form monoammonium phosphate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/322,096 UST102201I4 (en) | 1981-11-16 | 1981-11-16 | Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
| US06/605,345 US4512793A (en) | 1981-11-16 | 1984-04-30 | Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/322,096 UST102201I4 (en) | 1981-11-16 | 1981-11-16 | Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/605,345 Continuation-In-Part US4512793A (en) | 1981-11-16 | 1984-04-30 | Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST102201I4 true UST102201I4 (en) | 1982-09-07 |
Family
ID=23253395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/322,096 Pending UST102201I4 (en) | 1981-11-16 | 1981-11-16 | Granulation of urea phosphate from urea and merchant-grade phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST102201I4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554004A (en) | 1983-10-19 | 1985-11-19 | J. R. Simplot Company | Process for granulation of fertilizer materials |
| CN111689875A (en) * | 2020-07-07 | 2020-09-22 | 中化云龙有限公司 | Method for producing feed-grade urea phosphate by using wet-process phosphoric acid residues |
-
1981
- 1981-11-16 US US06/322,096 patent/UST102201I4/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4554004A (en) | 1983-10-19 | 1985-11-19 | J. R. Simplot Company | Process for granulation of fertilizer materials |
| CN111689875A (en) * | 2020-07-07 | 2020-09-22 | 中化云龙有限公司 | Method for producing feed-grade urea phosphate by using wet-process phosphoric acid residues |
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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 |