Sparger
AssigneeMinnesota Mining and Manufacturing Company
InventorDouglas W. Voegeli
Life of this patent
Estimating the term…
Abstract
A sparger useful for producing bubbles of uniform size in liquids is formed from a body comprised of a cured, thermosetting resin matrix enclosing spherical particles of substantially uniform size and containing numerous interconnecting passageways formed by the interstices between said enclosed particles.
Claims6
A sparger comprising a porous body provided with gas inlet means, said body consisting of a matrix of cured thermosetting resin containing and connecting a mass of uniformly sized, solid, substantially spherical particles of a size in the range of about 30 to 900 microns in diameter, said resin being present in amount of 10 to 15 parts by weight for each 100 parts by weight of particles, said body being formed by consolidation of the resin coating said particles and confluent at the points of contact of said particles which particles are uniformly coated over their entire surfaces with said resin in solid state and are adhered in the presence of an inert lubricant under pressure just sufficient to adhere the coated particles at points of contact with each other without causing flow of resin to fill the interstices between coated particles, the surfaces of said joined particles being coated with said resin to substantially the same thickness as originally deposited thereon and the cured resin defines a unitary matrix surrounding each of said spherical particles and containing numerous interconnecting passageways therethrough formed by the interstices between said resin-coated particles which passageways function as means for conducting gaseous flow from the said inlet means through said porous body to the surfaces thereof.
A sparger comprising a porous body provided with gas inlet means in the form of a central opening into said body, said body being composed of a mass of solid, substantially spherical particles of substantially uniform diameter in the range of 30 to 900 microns uniformly coated with and adhered to each other by a layer of cured thermosetting resin in amount of about 10 to 15 parts by weight for each 100 parts of particles, the said resin extending over the entire surface of each of said particles and confluent at the points of contact of said particles thus forming a rigid, uniformly porous body with the interstices between said coated particles forming numerous interconnecting passageways throughout said body and extending from said central opening to the outer surface thereof and functioning as a means for conducting gases from said inlet means through said porous body to the outer surface of said body.
Dependencies are inferred from the claim text.