Method and apparatus for producing a foam from a viscous liquid

Details Method and apparatus for producing a foam from a viscous liquid Method and apparatus for producing a foam from a viscous liquid

B - Operations, Transporting

05

C

222/69, 222/69.1

B05C 5/00 (2006.01) B01F 3/04 (2006.01) B27G 11/00 (2006.01) B29B 7/74 (2006.01)

Patent

CA 1100450

METHOD AND APPARATUS FOR PRODUCING A FOAM FROM A VISCOUS LIQUID Abstract of the Disclosure A method and apparatus for producing a coherent output stream of viscous liquid containing a foam-forming dispersed gas. The liquid is pressurized and delivered to apparatus having an internal chamber which presents a flow space for the flow of the liquid through it as an integral stream. A gas is introduced under pressure into the liquid, through an opening to the chamber across which the liquid sweeps, to form a mixture of the gas in the liquid. The gas and liquid mixture is maintained under pressure while it flows from the chamber to a restricted outlet orifice which can be closely adjacent to the chamber. At the outlet the pressure on the gas and liquid mixture is suddenly reduced by forcibly ejecting the mixture through the restricted orifice. A coherent stream of the gas/liquid mixture is produced wherein the gas subsequently expands to form a foam.

336590

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