IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0850920
(2004-05-21)
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발명자
/ 주소 |
- Taylor,Eric P.
- Rinker,Edward B.
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
12 인용 특허 :
17 |
초록
▼
A porous composite block is provided that contains at least two groups of binding agent particles. The first binding agent particles have an average particle size between about 5 μm and 200 μm. The second binding agent particles have an average particle size no larger than half the average
A porous composite block is provided that contains at least two groups of binding agent particles. The first binding agent particles have an average particle size between about 5 μm and 200 μm. The second binding agent particles have an average particle size no larger than half the average particle size of the first binding agent particles and also between about 10 nm and 30 μm. The porous composite block can also contain active grains and active granules such that the granules are smaller than the grains. The grains and the granules can be capable of treating water. A method of forming a porous composite block and a water treatment system are also provided.
대표청구항
▼
We claim: 1. A porous composite block, comprising: first binding agent particles, having an average particle size between about 5 μm and 200 μm, said first binding agent particles primarily binding active grains together to form a matrix having void spaces throughout; and second binding a
We claim: 1. A porous composite block, comprising: first binding agent particles, having an average particle size between about 5 μm and 200 μm, said first binding agent particles primarily binding active grains together to form a matrix having void spaces throughout; and second binding agent particles, having an average particle size which is no larger than half the average particle size of the first binding agent particles and which is also between about 10 nm and 30 μ m, said second binding agent particles primarily binding active granules to form agglomerates that are trapped in the void spaces of the matrix; wherein the active grains, the first binding agent particles, the active granules and the second binding agent particles are dispersed homogeneously throughout the block. 2. A porous composite block, comprising: active grains and first binding agent particles, which form a matrix having void spaces throughout; and a plurality of active granules and second binding agent particles which form agglomerates that are dispersed homogeneously throughout the void spaces in the matrix; wherein the first binding agent particles have an average particle size, the second binding agent particles have an average particle size, and the average particle size of the first binding agent particles is at least twice as large as the average particle size of the second binding agent particles. 3. The block of claim 2 wherein the active grains and the active granules comprise different materials and are each selected from the group consisting of activated carbon, activated alumina, activated bauxite, fuller's earth, diatomaceous earth, sand, glass, clay, silica gel, calcium sulfate, magnesia, ceramic particles, zeolite particles, inert particles, silica, mixed oxides, surface charge-modified particles, cationic materials which may be bound to fibers, carbon fibers, metal oxides, metal hydroxides and mixtures thereof. 4. The block of claim 3 wherein the cationic materials are selected from the group of polymer consisting of polyaminoamides, polyethyleneimine, polyvinylamine, polydiallyld imethylammonium chloride, polydimethylamine-epichlorohydrin, polyhexamethylenebiguanide, and poly-[2-(2-ethoxy)-ethoxyethyl-guani-dinium chloride]. 5. The block of claim 3 wherein the fibers are selected from the group consisting of polyethylene, polypropylene, ethylene maleic anhydride copolymers, carbon, and glass. 6. The block of claim 2 wherein the first binding agent particles have an average particle size between about 5 μm and 200 μ m. 7. The block of claim 2 wherein the first binding agent particles have an average particle size between about 50 μm and 150 μm. 8. The block of claim 2 wherein the second binding agent particles have an average particle size which is between about 10 nm and 30 μm. 9. The block of claim 2 wherein the second binding agent particles have an average particle size which is between about 100 nm and 20 μm. 10. The block of claim 2 wherein the first binding agent particles comprise an organic material. 11. The block of claim 10 wherein the first binding agent particles comprise a first polymer and the second binding agent particles comprise a second polymer having a chemical structure different from the first polymer. 12. The block of claim 10 wherein the first binding agent particles comprise a polymer and the second binding agent particles comprise an inorganic material. 13. The block of claim 12 wherein the first binding agent particles comprise a polymer selected from the group consisting of polyethylene homopolymers, modified polyethylene homopolymers, ethylene copolymers, ethylene-based ion-containing copolymers, and combinations thereof. 14. The block of claim 12 wherein the second binding agent particles comprise an inorganic material selected from the group consisting of magnesium cements. 15. The block of claim 2 wherein the first binding agent particles and the second binding agent particles each comprise a material selected from the group consisting of polyethylene homopolymers, modified polyethylene homopolymers, ethylene copolymers, ethylene-based ion-containing copolymers, fluoropolymers, nylon, polypropylene, and magnesium cements. 16. The block of claim 2 wherein the first binding agent particles have a melt index less than about 1 gm/10 min at 190° C. with a 15 kg load. 17. The block of claim 2 wherein at least some binding agent particles are electrostatically charged. 18. The block of claim 17 wherein at least a portion of the second binding agent particles are electrostatically charged.
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