The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2012
Filed:
Oct. 09, 2008
Uwe Weiss, Sonnefeld, DE;
Michael Jacob, Weimar, DE;
Elin Sohlberg, Helsingborg, SE;
Ajse Sandqvist, Helsingborg, SE;
Fredrik Lauritzson, Ramlösa, SE;
Uwe Weiss, Sonnefeld, DE;
Michael Jacob, Weimar, DE;
Elin Sohlberg, Helsingborg, SE;
Ajse Sandqvist, Helsingborg, SE;
Fredrik Lauritzson, Ramlösa, SE;
Kemira Kemi AB, Helsingborg, SE;
Abstract
The present invention relates to a use of a two-way spray nozzle () with protective gas for manufacturing granular sodium percarbonate, said nozzle comprising a central tube () having an outlet for an aqueous hydrogen peroxide solution, an inner jacket tube () arranged coaxially around the central tube, and having an outlet for aqueous sodium carbonate solution, an outer jacket tube () arranged coaxially around the central tube and inner jacket tube, and having an outlet for a protective gas, a threaded ring slot () arranged around the central tube at a distance from the outlet of the central tube, wherein the threads of the ring slot are arranged at an angle α with respect of the direction of the longitudinal axis () of the central tube, and in which said protective gas is used at a pressure of less than 0.7 bar. The present invention also relates to a method for manufacturing granular sodium percarbonate.