Invention Grant
- Patent Title: Method for producing urea fertilizer with low moisture absorption tendencies
- Patent Title (中): 生产低吸湿倾向的尿素肥的方法
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Application No.: US13822541Application Date: 2011-08-31
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Publication No.: US08945271B2Publication Date: 2015-02-03
- Inventor: Paul Niehues , Harald Franzrahe , Matthias Potthoff , Luc Albert Vanmarcke
- Applicant: Paul Niehues , Harald Franzrahe , Matthias Potthoff , Luc Albert Vanmarcke
- Applicant Address: NL NW Roermond
- Assignee: Uhde Fertilizer Technology B.V.
- Current Assignee: Uhde Fertilizer Technology B.V.
- Current Assignee Address: NL NW Roermond
- Agency: Brooks Kushman P.C.
- Priority: EP10009615 20100915
- International Application: PCT/EP2011/004398 WO 20110831
- International Announcement: WO2012/034650 WO 20120322
- Main IPC: C05C9/00
- IPC: C05C9/00 ; C05C3/00 ; C05G3/00

Abstract:
A method for producing urea granules having low moisture absorption capacity, with a urea granulator, having a granule flow inlet side and oppositely a granule flow outlet side, forming an axis alongside which granules from a urea solution and a urea/ammonium salt-stream are formed, whereby the solution and the salt-stream are sprayed as a mixture or separately via a feed system unit via various nozzles into the granulator onto a seed material. In this process the highest amount of the salt-stream is sprayed into the granulator at the granule flow inlet side and the amount of the salt-stream is decreased alongside the axis of the granulator from the granule flow inlet side to the granule flow outlet side.
Public/Granted literature
- US20130319060A1 METHOD FOR PRODUCING UREA FERTILIZER WITH LOW MOISTURE ABSORPTION TENDENCIES Public/Granted day:2013-12-05
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