DE1164392B - Process for the production of shelf stable, non-caking urea - Google Patents
Process for the production of shelf stable, non-caking ureaInfo
- Publication number
- DE1164392B DE1164392B DEB70639A DEB0070639A DE1164392B DE 1164392 B DE1164392 B DE 1164392B DE B70639 A DEB70639 A DE B70639A DE B0070639 A DEB0070639 A DE B0070639A DE 1164392 B DE1164392 B DE 1164392B
- Authority
- DE
- Germany
- Prior art keywords
- urea
- production
- shelf stable
- caking
- sulfur
- 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 12
- 239000004202 carbamide Substances 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 title claims 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 B. sulfur flowers Chemical compound 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- ZJHHPAUQMCHPRB-UHFFFAOYSA-N urea urea Chemical compound NC(N)=O.NC(N)=O ZJHHPAUQMCHPRB-UHFFFAOYSA-N 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Description
Verfahren zur Herstellung von lagerbeständigem, nicht zusammenbackendem Harnstoff Harnstoff wird in zunehmendem Maße als Düngemittel verwendet. Dabei wird großer Wert auf gute Lagerbeständigkeit und Streubarkeit gelegt. Da jedoch Harnstoff stark zum Zusammenbacken neigt, wird er zur Verbesserung seiner Lagerbeständigkeit häufig mit inerten Stoffen, wie Kieselgur, Ton, Kreide oder Talkum, eingepudert. Es ist auch bekannt, zur Erhöhung der Lagerbeständigkeit den Harnstoff mit Fettsäureamiden, Aldehyden, Harnstoff-Formaldehyd-Kondensationsprodukten zu behandeln. Mit diesen Zusatzstoffen wird zwar teilweise eine Verbesserung der Lagereigenschaften erreicht, die zugesetzten Stoffe sind jedoch als Dünger oder als Mittel für die Bodenverbesserung wertlos.Method of making shelf stable, non-caking Urea Urea is increasingly used as a fertilizer. It will Great emphasis is placed on good storage stability and spreadability. However, since urea is highly prone to caking, it will improve its shelf life often powdered with inert substances such as kieselguhr, clay, chalk or talc. It is also known to increase the shelf life of urea with fatty acid amides, To treat aldehydes, urea-formaldehyde condensation products. With these Additives partially improve the storage properties, however, the added substances are used as fertilizers or as means for soil improvement worthless.
Es wurde gefunden, daß man sehr gut lagerbeständigen und gut streubaren Harnstoff erhält, wenn man ihn in geringen Mengen mit feinverteiltem Schwefel einpudert. It has been found that they are very storable and easy to spread Urea is obtained when it is powdered in small quantities with finely divided sulfur.
Dieses Pudermittel hat gegenüber den bereits bekannten Pudermitteln den Vorteil, daß es gleichzeitig, insbesondere wenn der Harnstoff bei der Düngung von schwefelarmen Böden eingesetzt wird, als Bodenverbesserungsmittel wirkt. Im allgemeinen genügen Zusätze in einer Menge von 10,1 bis 2 Gewichtsprozent an feinverteiltem Schwefel, z. B. Schwefelblumen, zur Erzielung einer ausreichenden Wirkung. This powdering agent has compared to the already known powdering agents the advantage of being at the same time, especially when the urea is used in fertilization used by low-sulfur soils, acts as a soil improver. in the Generally, additives in an amount of 10.1 to 2 percent by weight of finely divided material are sufficient Sulfur, e.g. B. sulfur flowers, to achieve a sufficient effect.
Beispiel a) 99,5 Gewichtsteile kristallisierter Harnstoff werden mit 0,5 Gewichtsteilen Schwefelblumen in einer Mischtrommel eingepudert. Der Puderstoff haftet sehr gut an dem Harnstoff, der auch nach längerer Lagerzeit frei rieselnd bleibt, während unbehan- delter kristallisierter Harnstoff schon in kurzer Zeit stark zusammenbackt. b) 99 Gewichtsteile granulierter Harnstoff werden, wie unter a) angegeben, mit 1 Gewichtsteil Schwefel blumen eingepudert. Der so behandelte Harnstoff bleibt auch nach längerer Lagerzeit frei rieselnd. Example a) 99.5 parts by weight of crystallized urea become powdered with 0.5 parts by weight of sulfur flowers in a mixing drum. The powder adheres very well to the urea, which trickles freely even after a long period of storage remains while untreated Delter crystallized urea strongly in a short time cakes. b) 99 parts by weight of granulated urea are, as indicated under a), powdered with 1 part by weight of sulfur flowers. The urea treated in this way remains Free flowing even after a long period of storage.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB70639A DE1164392B (en) | 1963-02-06 | 1963-02-06 | Process for the production of shelf stable, non-caking urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB70639A DE1164392B (en) | 1963-02-06 | 1963-02-06 | Process for the production of shelf stable, non-caking urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1164392B true DE1164392B (en) | 1964-03-05 |
Family
ID=6976732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB70639A Pending DE1164392B (en) | 1963-02-06 | 1963-02-06 | Process for the production of shelf stable, non-caking urea |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1164392B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561235A3 (en) * | 1992-03-18 | 1993-11-03 | Chemie Linz Gmbh | Urea granules coated with melanin powder |
-
1963
- 1963-02-06 DE DEB70639A patent/DE1164392B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561235A3 (en) * | 1992-03-18 | 1993-11-03 | Chemie Linz Gmbh | Urea granules coated with melanin powder |
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