Methods and apparatus for liquid phase separation
OwnerSheila H. DeWittinventor
Life of this patent
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Abstract
An apparatus and method for phase separation of two materials is disclosed. The two materials to be separated are positioned in an extraction cartridge and passed through a filter device, the filter device includes a filter disk member positioned adjacent at least one and preferably two frit members. A drying cartridge may be used to dry the separated liquid material after it leaves the extraction cartridge. The invention can be used for reaction workup, quenching, product isolation and purification.
Claims20
A method for reaction quench and liquid/liquid separation comprising the steps of:
- (a) providing an extraction cartridge, said extraction cartridge comprising an elongated container with a filter member and at least one porous support member positioned inside, said filter member being cup-shaped and made from a hydrophobic non-absorbing material, and said support member supporting said filter member in said container;
- (b) introducing a reaction mixture into the extraction cartridge container, said reaction mixture having a first liquid material and a second liquid material;
- (c) quenching said reaction mixture;
- and
- (d) separating said first liquid material from said second liquid material by passing said first liquid material through said filter member in said extraction cartridge.
A filter separation device comprising:
- a liquid/liquid separation cartridge member, said cartridge member having an elongated hollow body portion, a necked-down portion, and a smaller discharge portion,
- an elongated hollow cup-shaped hydrophobic filter member positioned inside said separation cartridge, and
- spacing and centering means on the exterior of said filter member for spacing said filter member from said cartridge member and for centering said filter member in said cartridge member.
A filter separation device comprising:
- an elongated hollow thin-walled container member having a substantially circular cross-sectional shape;
- and
- an elongated hollow cup-shaped filter member positioned inside said container member;
- said filter member being made from a hydrophobic non-absorbing material;
- said filter member having a non-circular cross-sectional shape with a plurality of planar side the circumference thereof, wherein said filter member only contacts the inside of said container member at a limited member of locations.
A method for two phase liquid/liquid separation comprising the steps of:
- proving a separation cartridge comprising an elongated hollow thin-walled container and a filter member positioned inside said container, said filter member being made from a hydrophobic non-absorbing material and having an elongated hollow cup-shape, and said filter member having spacing and centering means thereon for spacing said filter member from said container and for centering said filter member in said container, said container having an exit port;
- introducing a solution into said filter member in said container, said solution comprising a mixture of a first aqueous liquid and a second liquid which is an organic material immiscible in an aqueous liquid;
- separating said first liquid from said second liquid by passing said second liquid through said filter member and into said container while retaining said first liquid in said cup-shaped filter member, said second liquid passing from said filter member and into the space between said filter member and said container caused by said spacing and centering means;
- and
- exhausting said second liquid from said container through said exit port.
Dependencies are inferred from the claim text.