Abrasion Resistant Membrane Structure and Method of Forming the Same
AssigneeHpd, LLC
InventorsBruce Bishop, Jeremy Cardin, Christopher B. Hoffman, Richard Higgins
Life of this patent
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Abstract
A membrane filtering device includes a substrate, a support membrane supported by the substrate, and a separation membrane supported by the support membrane. The separation membrane includes material that is substantially embedded into pores of the underlying support membrane. Optionally, the support membrane includes particles that are also substantially embedded into pores of the substrate.
Claims28
A filtration device for receiving a feedstock at a feed end and for separating the feedstock into a permeate, the filtration device comprising:
- a. a monolith formed of porous material;
- b. a plurality of feedstock passageways extending through the monolith from the feed end to an opposite end;
- c. respective feedstock passageways including a surrounding membrane structure comprising:
- i. a support membrane including inorganic particles bonded to the porous monolith;
- and
- ii. a separation membrane comprising material substantially embedded into the support membrane such that permeate flows through the separation membrane and the support membrane.
A method of forming a filtration device, comprising:
- a. forming a monolith of porous material;
- b. forming a plurality of feedstock passageways in the monolith wherein respective passageways include a membrane structure comprising a substrate including a portion of the porous material of the monolith, a support membrane bonded to the substrate and a separation membrane substantially embedded in the membrane support;
- c. wherein bonding the support membrane to the porous substrate includes coating the porous substrate with a composition including inorganic particles;
- d. after coating the porous substrate with the composition including inorganic particles, bonding the support membrane to the monolith;
- e. after bonding the support membrane to the porous substrate, substantially embedding the separation membrane into the support membrane;
- and
- f. bonding the separation membrane to the support membrane.
A filtration device for receiving a feed stock at a feed end and for separating the feed stock into a permeate, the filtration device comprising:
- a. a monolith formed of porous material;
- b. a plurality of feed stock passageways extending through the monolith from the feed end to an opposite end;
- c. respective feed stock passageways including a surrounding membrane structure comprising:
- i. a substrate formed in part at least by the porous material of the monolith, the substrate including pores formed therein;
- ii. a support membrane including inorganic particles where the particles of the support membrane are substantially embedded in the pores of the substrate and wherein the particles of the support membrane are bonded to the substrate;
- and
- iii. a separation membrane including material substantially embedded into pores formed in the support membrane such that permeate flows through the separation membrane and the support membrane as well as the substrate.
A method of forming a filtration device, comprising:
- a. forming a monolith of porous material;
- b. forming a plurality of feed stock passageways in the monolith wherein respective passageways include a membrane structure comprising
- i. a substrate that includes a portion of a porous material of a monolith;
- and
- ii. a support membrane including inorganic particles supported by the substrate and a separation membrane including inorganic particles supported on the membrane support;
- c. the method including substantially embedding the particles of the support membrane into the substrate and bonding the particles of the membrane support to the substrate;
- and
- d. embedding the material of the separation membrane into pores formed in the membrane support and bonding the separation membrane to the membrane support.
Dependencies are inferred from the claim text.