UST998001I4 - Production of urea-ammonium polyphosphates from urea phosphate - Google Patents
Production of urea-ammonium polyphosphates from urea phosphate Download PDFInfo
- Publication number
- UST998001I4 UST998001I4 US06/071,436 US7143679A UST998001I4 US T998001 I4 UST998001 I4 US T998001I4 US 7143679 A US7143679 A US 7143679A US T998001 I4 UST998001 I4 US T998001I4
- Authority
- US
- United States
- Prior art keywords
- urea
- phosphate
- polyphosphate
- ammonium
- percent
- 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
- 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 5
- 229920001276 ammonium polyphosphate Polymers 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000003337 fertilizer Substances 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 239000004114 Ammonium polyphosphate Substances 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229920000388 Polyphosphate Polymers 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- 235000019826 ammonium polyphosphate Nutrition 0.000 abstract 2
- 239000004202 carbamide Substances 0.000 abstract 2
- 239000012263 liquid product Substances 0.000 abstract 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 2
- 239000001205 polyphosphate Substances 0.000 abstract 2
- 235000011176 polyphosphates Nutrition 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 abstract 1
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract 1
- PPBAJDRXASKAGH-UHFFFAOYSA-N azane;urea Chemical compound N.NC(N)=O PPBAJDRXASKAGH-UHFFFAOYSA-N 0.000 abstract 1
- 238000010923 batch production Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011785 micronutrient Substances 0.000 abstract 1
- 235000013369 micronutrients Nutrition 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 238000000197 pyrolysis Methods 0.000 abstract 1
Images
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A batch process is disclosed for the production of relatively pure urea ammonium polyphosphate liquid fertilizers from crystalline urea phosphate made from wet-process acid and urea. Initially, crystalline urea phosphate is fed to a tank where it is combined with previously produced liquid product; the latter is added to provide fluidity for agitation. The mixture is then ammoniated batchwise in one stage to pyrolyze the urea phosphate to condense orthophosphate to polyphosphate and form molten urea-ammonium polyphosphates. Pyrolysis takes place at relatively low temperatures of 220° F. to 300° F. and heat from ammoniation of the urea phosphate crystals provides all the heat to effect the condensation. The molten pyrolyzate which contains mixtures of urea, ammonium orthophosphate, and ammonium polyphosphate is dissolved in an ammonia-water mixture to yield high-analysis liquid fertilizer that contains 10 to 15 percent nitrogen and 16 to 30 percent P2 O5 ; 10 to 50 percent of the phosphate is present as polyphosphate. The liquid fertilizer is then cooled. Supplementary micronutrient-containing materials may be incorporated in the liquid product. Total batch cycle time varies from about 20 to 45 minutes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/071,436 UST998001I4 (en) | 1979-08-31 | 1979-08-31 | Production of urea-ammonium polyphosphates from urea phosphate |
| US06/120,949 US4292067A (en) | 1979-08-31 | 1980-02-12 | Production of urea-ammonium polyphosphates from urea phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/071,436 UST998001I4 (en) | 1979-08-31 | 1979-08-31 | Production of urea-ammonium polyphosphates from urea phosphate |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/120,949 Continuation US4292067A (en) | 1979-08-31 | 1980-02-12 | Production of urea-ammonium polyphosphates from urea phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST998001I4 true UST998001I4 (en) | 1980-09-02 |
Family
ID=22101305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/071,436 Pending UST998001I4 (en) | 1979-08-31 | 1979-08-31 | Production of urea-ammonium polyphosphates from urea phosphate |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST998001I4 (en) |
-
1979
- 1979-08-31 US US06/071,436 patent/UST998001I4/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB997933A (en) | Solid ammonium phosphates | |
| US3713802A (en) | Reaction of phosphoric acid, urea, and ammonia | |
| US1856187A (en) | Process of producing calcium nitrate and ammonium salts from phosphate rock and like phosphate material | |
| UST998001I4 (en) | Production of urea-ammonium polyphosphates from urea phosphate | |
| US3241946A (en) | Ammonium phosphate fertilizer solids derived from anhydrous liquid phosphoric acid | |
| GB1153707A (en) | Treatment of Phosphoric Acid, Process, Apparatus & Product | |
| US2680679A (en) | Manufacture of fertilizers | |
| ES440910A1 (en) | Manufacture of solid ammonium phosphate | |
| US3243279A (en) | Ammonium phosphate solids derived from anhydrous liquid phosphoric acid | |
| US2002400A (en) | Fertilizer | |
| UST973004I4 (en) | Production of urea-ammonium polyphosphates from urea phosphate | |
| US4308048A (en) | Production of ammonium potassium polyphosphates | |
| US3687618A (en) | Recovery of ammonia from exit gases of an ammonium polyphosphate plant | |
| US3911086A (en) | Potassium ammonium polyphosphates | |
| US2611691A (en) | Process of producing a compound fertilizer | |
| US2057956A (en) | Production of monocalcium phosphate | |
| GB816573A (en) | Method of manufacturing fertilisers from calcium nitrate and urea | |
| US1889654A (en) | Fertilizer | |
| US3092487A (en) | Process for the manufacture of fertilizers and the like | |
| US3291595A (en) | High-nitrogen particulate fertilizer coated with neutralized superphosphoric acid | |
| US3562778A (en) | Process for the production of ammonium polyphosphate | |
| US3594150A (en) | Preparation of solid mixed fertilizers and ammonium nitrate | |
| US1965301A (en) | Process for producing mixed fertilizers | |
| US1355369A (en) | Nitrogenous phosphatic material and process of producing the same | |
| GB1035483A (en) | Fertilizer manufacture |