DE2252112A1 - Verfahren und vorrichtung zur herstellung von harnstoffteilchen - Google Patents
Verfahren und vorrichtung zur herstellung von harnstoffteilchenInfo
- Publication number
- DE2252112A1 DE2252112A1 DE19722252112 DE2252112A DE2252112A1 DE 2252112 A1 DE2252112 A1 DE 2252112A1 DE 19722252112 DE19722252112 DE 19722252112 DE 2252112 A DE2252112 A DE 2252112A DE 2252112 A1 DE2252112 A1 DE 2252112A1
- Authority
- DE
- Germany
- Prior art keywords
- urea
- bed
- particles
- cores
- vessel
- 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
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 95
- 239000004202 carbamide Substances 0.000 title claims description 84
- 239000002245 particle Substances 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000007789 gas Substances 0.000 claims description 19
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000007771 core particle Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000009428 plumbing Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 23
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001495016 Loriidae Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fertilizers (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Glanulating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7114771A NL7114771A (enrdf_load_stackoverflow) | 1971-10-27 | 1971-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2252112A1 true DE2252112A1 (de) | 1973-05-03 |
Family
ID=19814340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722252112 Pending DE2252112A1 (de) | 1971-10-27 | 1972-10-24 | Verfahren und vorrichtung zur herstellung von harnstoffteilchen |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS4852551A (enrdf_load_stackoverflow) |
| DE (1) | DE2252112A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2159050A5 (enrdf_load_stackoverflow) |
| IT (1) | IT972104B (enrdf_load_stackoverflow) |
| NL (1) | NL7114771A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2825039A1 (de) * | 1977-06-09 | 1978-12-21 | Azote Sa Cie Neerlandaise | Verfahren zur herstellung von harnstoffkoernern |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL191557C (nl) * | 1980-05-12 | 1995-09-19 | Azote Sa Cie Neerlandaise | Werkwijze voor het vervaardigen van uit een kern en een omhulling opgebouwde korrels. |
-
1971
- 1971-10-27 NL NL7114771A patent/NL7114771A/xx not_active Application Discontinuation
-
1972
- 1972-10-24 DE DE19722252112 patent/DE2252112A1/de active Pending
- 1972-10-25 JP JP10757272A patent/JPS4852551A/ja active Pending
- 1972-10-26 IT IT972572A patent/IT972104B/it active
- 1972-10-27 FR FR7238328A patent/FR2159050A5/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2825039A1 (de) * | 1977-06-09 | 1978-12-21 | Azote Sa Cie Neerlandaise | Verfahren zur herstellung von harnstoffkoernern |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7114771A (enrdf_load_stackoverflow) | 1973-05-02 |
| FR2159050A5 (en) | 1973-06-15 |
| IT972104B (it) | 1974-05-20 |
| JPS4852551A (enrdf_load_stackoverflow) | 1973-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHA | Expiration of time for request for examination |