UREA GRANULATION PROCESS WITH SCRUBBING SYSTEM

Urea granulation process with scrubbing system including at least one gaseous waste stream for removal of dust and ammonia whereby this waste stream is processed through a combination of the following process steps comprising (a) washing the dust and ammonia laden stream 4 with water and/or an aqueo...

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Bibliographische Detailangaben
Hauptverfasser:	FRANZRAHE, Harald, VANMARCKE, Luc, Albert, POTTHOFF, Matthias
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY FERTILISERS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MANUFACTURE THEREOF METALLURGY NITROGENOUS FERTILISERS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Urea granulation process with scrubbing system including at least one gaseous waste stream for removal of dust and ammonia whereby this waste stream is processed through a combination of the following process steps comprising (a) washing the dust and ammonia laden stream 4 with water and/or an aqueous urea solution whereby a dust-laden liquid stream 26 and a dust-reduced stream 5 is generated, and (b) reacting the dust-reduced stream 5 with formaldeyhde 7 to form a stream 8 comprising hexamethylenetetramine and urea-formaldehyde and clean off-gas 6 wherein the gas stream is directed first through process step (a) and then through process step (b).