Method and device for solidifying fine snow grain

Application Number: 00106936
Application Date: 2000.04.21
Publication Number: 1273217
Publication Date: 2000.11.15
Priority Information: 1999/4/23 US 09/298526
International: B05B1/02;C01B31/22;F25J1/00
Applicant(s) Name: Praxair Technology Inc.
Inventor(s) Name: T. M. Luis;T.H. Garstjer;T. Terred
Patent Agency Code: 72001
Patent Agent: lu xinhua
Abstract The device forms snow from pressurized carbon dioxide fluids. A supply conduit delivers a flow of pressurized fluid. An expansion member attached to the supply conduit contains a plurality of channels for reducing pressure on the fluid and converting the fluid with reduced pressure into a mixed-phase stream of gas and fine snow particles. The channels have an average diameter and an average length of at least twice its average diameter. An agglomeration chamber attached to the plurality of channels agglomerates the fine snow particles by contacting the fine snow particles together.