UST104201I4 - Pressure reactor for producing diammonium phosphate - Google Patents
Pressure reactor for producing diammonium phosphate Download PDFInfo
- Publication number
- UST104201I4 UST104201I4 US06/538,714 US53871483A UST104201I4 US T104201 I4 UST104201 I4 US T104201I4 US 53871483 A US53871483 A US 53871483A US T104201 I4 UST104201 I4 US T104201I4
- Authority
- US
- United States
- Prior art keywords
- reactor
- pressures
- dap
- diammonium phosphate
- ammonia
- 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
- 239000005696 Diammonium phosphate Substances 0.000 title abstract 6
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 title abstract 6
- 229910000388 diammonium phosphate Inorganic materials 0.000 title abstract 6
- 235000019838 diammonium phosphate Nutrition 0.000 title abstract 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 5
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000003337 fertilizer Substances 0.000 abstract 1
- 239000002803 fossil fuel Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical class S(O)(O)(=O)=O QAOWNCQODCNURD-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
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Process for producing diammonium phosphate (DAP) fertilizer from phosphoric and sulfuric acids, anhydrous ammonia and water in a specially designed reactor operated at high pressures to granulate diammonium phosphate at low recycle ratios and with either no, or relatively small, fossil fuel requirement drying per ton of product. By operating at elevated pressures, it is possible to force ammonia into a high temperature (250° to 300° F.) melt without exceeding the recovery capacity of the acid fed to the scrubber. The high pressure slurry from the reactor is forced into the bed of materials in a rotary granulator. Previously operated reactors employed pressures ranging from 0 to 10 psig pressures. This reactor operates at 40 to 80 psig. The process substantially increases production in existing DAP granulation plants and has helped reduce grade deficiencies. Also, use of this reactor for DAP production results in about the same levels of ammonia loss to the scrubber as the prior-art tank preneutralizer, higher operating factors, less maintenance and no transfer pump plugging. Operation is at a temperature of 250° F. to 300° F., or more, while the tank preneutralizer operates normally at 240° F.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/538,714 UST104201I4 (en) | 1983-10-03 | 1983-10-03 | Pressure reactor for producing diammonium phosphate |
| US06/843,414 US4619684A (en) | 1983-10-03 | 1986-03-24 | Pressure reactor for producing diammonium phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/538,714 UST104201I4 (en) | 1983-10-03 | 1983-10-03 | Pressure reactor for producing diammonium phosphate |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/843,414 Continuation US4619684A (en) | 1983-10-03 | 1986-03-24 | Pressure reactor for producing diammonium phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST104201I4 true UST104201I4 (en) | 1984-05-01 |
Family
ID=24148107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/538,714 Pending UST104201I4 (en) | 1983-10-03 | 1983-10-03 | Pressure reactor for producing diammonium phosphate |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST104201I4 (en) |
-
1983
- 1983-10-03 US US06/538,714 patent/UST104201I4/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCF | Information on status: patent grant |
Free format text: PATENTED CASE |