B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
299/16
B05B 7/04 (2006.01) B05B 7/08 (2006.01) F23J 15/00 (2006.01)
Patent
CA 1207821
ABSTRACT The invention relates to a nozzle for the atomization of a liquid containing a suspension of solid particles with the aid of an atomizing gas, more specifically a two-phase nozzle of the internal-mix type that is primarily intended for atomization of an absorbent suspended in liqiuid in a plant for the removal of sulphur dioxide from flue gases according to the dry scrubbing method. The atomizing of large flows of such a liquid suspension entails difficult problems with clogging and non-uniform liquid distribution as well as nozzle wear. These problems are solved according to the invention by the fact that the nozzle (1) consists of a symmetric central body (2) with a cavity (3) into which a central liquid main (4) feeds, between three and ten mist orifices (5) arranged symmetrically around the central body, consisting of tubular housings (6) whose longitudinal axes (7) form an angle (v) of between 20 and 90° with the longi- tudinal axis (8) of the central body. Each mist orifice has a circular outlet opening (9) with a diameter of between 1 and 10 mm and with a radially symmetric atomizing zone (11) that is supplied individually with atomizing gas from a tubular gas orifice (12) installed upstream of the outlet opening (9), which is provided with a seat (13) and a wear protection liner (14). The gas orifices (12) are connected to a gas distribution line (15), which is concentrically arranged around the liquid main. The mist orifices (5) are designed for atomization of a liquid flow of between 0 and 20 000 kg/m2s with a gas flow of between 500 and 2 500 kg/m2s, figured over the area of the outlet opening (9), and with a pressure of between 2 and 12 bar in the gas and the liquid.
415112
Flakt Aktiebolag
Gowling Lafleur Henderson Llp
LandOfFree
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