UST104101I4 - Production of urea-ammonium nitrate suspension fertilizer - Google Patents
Production of urea-ammonium nitrate suspension fertilizer Download PDFInfo
- Publication number
- UST104101I4 UST104101I4 US06/448,568 US44856882A UST104101I4 US T104101 I4 UST104101 I4 US T104101I4 US 44856882 A US44856882 A US 44856882A US T104101 I4 UST104101 I4 US T104101I4
- Authority
- US
- United States
- Prior art keywords
- urea
- ammonium nitrate
- production
- nitrogen
- water
- 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
- 239000000725 suspension Substances 0.000 title abstract 4
- 239000003337 fertilizer Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 5
- 239000004202 carbamide Substances 0.000 abstract 5
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 abstract 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 239000004927 clay Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 2
- 230000008025 crystallization Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910001868 water Inorganic materials 0.000 abstract 2
- 229960000892 attapulgite Drugs 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052625 palygorskite Inorganic materials 0.000 abstract 1
- 239000012047 saturated solution Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Highly concentrated nitrogen suspension fertilizers which have excellent long-term storage and handling properties in both warm and severely cold weather are produced from urea, ammonium nitrate, water, and attapulgite clay and contain urea crystals suspended in a saturated solution containing urea and ammonium nitrate. The compositions must be maintained within a very narrow range to produce suspensions satisfactory for commercial use. This narrow composition range is such that the saturation temperatures and nitrogen contents of the products fall within specific ranges. Deviation from these ranges results in poor quality, commercially unusable products. If the saturation temperature or nitrogen content is too high, the product is too viscous to be pumped or applied to the soil. If the saturation temperature is too low, the product contains excessively large crystals which settle to the bottom of storage and shipping tanks and clog spray nozzles in suspension application equipment. The process consists of first heating the urea, ammonium nitrate, and water to an all solution state or combining hot urea and ammonium nitrate solutions from production. Then the solution is cooled in two or more stages with gelling-type clay added prior to crystallization and air cooling used in the crystallization stage(s).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/448,568 UST104101I4 (en) | 1982-12-10 | 1982-12-10 | Production of urea-ammonium nitrate suspension fertilizer |
| US06/485,785 US4439223A (en) | 1982-12-10 | 1983-04-18 | Production of urea-ammonium nitrate suspension fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/448,568 UST104101I4 (en) | 1982-12-10 | 1982-12-10 | Production of urea-ammonium nitrate suspension fertilizer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/485,785 Continuation US4439223A (en) | 1982-12-10 | 1983-04-18 | Production of urea-ammonium nitrate suspension fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST104101I4 true UST104101I4 (en) | 1984-04-03 |
Family
ID=23780832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/448,568 Pending UST104101I4 (en) | 1982-12-10 | 1982-12-10 | Production of urea-ammonium nitrate suspension fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST104101I4 (en) |
-
1982
- 1982-12-10 US US06/448,568 patent/UST104101I4/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCF | Information on status: patent grant |
Free format text: PATENTED CASE |