IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0025325
(2004-12-29)
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발명자
/ 주소 |
- Landis,Charles R.
- Oaks,Danny
- Rothermel,Ricky P.
- Harvey,Robert A.
- Gray,Steven Reed
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출원인 / 주소 |
- Halliburton Energy Services, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
20 |
초록
▼
Compositions including pellets of alum, a smectite mineral material, and optionally sodium or calcium carbonate, that can be delivered to a phosphate impoundment located at or near the bottom of a body of water. The pellets of alum, smectite mineral material and optionally sodium or calcium carbonat
Compositions including pellets of alum, a smectite mineral material, and optionally sodium or calcium carbonate, that can be delivered to a phosphate impoundment located at or near the bottom of a body of water. The pellets of alum, smectite mineral material and optionally sodium or calcium carbonate are dropped in a body of water, and the alum is released over time, as the pellet descends to the bottom of the body of water.
대표청구항
▼
What is claimed is: 1. A composition for treating phosphate in a body of water comprising: a) alum; and b) a smectite mineral material; which composition, when added to a body of water, retains at least about 90 percent of the integrity of its form for at least about two minutes; and which composit
What is claimed is: 1. A composition for treating phosphate in a body of water comprising: a) alum; and b) a smectite mineral material; which composition, when added to a body of water, retains at least about 90 percent of the integrity of its form for at least about two minutes; and which composition has a density sufficient to allow the composition to settle to a sediment water interface in the body of water and release alum at the sediment water interface. 2. A composition according to claim 1, wherein the smectite mineral material is selected from the group consisting of: bentonite, attapulgite, saponite, hectorite, sepiolite and fullers earth. 3. A composition according to claim 1, comprising from about 30 to about 99 percent by weight of alum and from about 1 to about 70 percent by weight of the smectite mineral material. 4. A composition according to claim 1, which composition is in a form selected from a tablet, extruded noodle, pellet, briquette and ribbon. 5. A composition according to claim 4, wherein the selected form of the composition has a diameter of from about 쩌 to about 24 inches. 6. A composition according to claim 1, wherein the composition has a density of from about 1.0 to about 2.0 gm/cm3. 7. A composition according to claim 1, further comprising a pH buffer selected from the group consisting of: sodium carbonate and calcium carbonate. 8. A composition according to claim 7, wherein the composition further comprises up to about 30 percent by weight of the pH buffer. 9. A composition according to claim 1, further comprising a water soluble resin material selected from corn starch, guar gum, alginates, polyvinyl alcohol and partially hydrolyzed polyacrylamides. 10. A composition according to claim 9, which composition, when added to a body of water, retains about 90 percent of the integrity of its form for a period of time in the range of about 2 minutes to about 24 hours. 11. A composition according to claim 9, wherein the composition further comprises up to about 5 percent by weight of the water soluble resin. 12. A composition according to claim 1, having a moisture content of from about 1 to about 15 percent by weight. 13. A composition comprising: a) alum; and b) a smectite mineral material; which composition is in a form selected from a tablet, extruded noodle, pellet, briquette and ribbon; which composition, when added to a body of water, retains at least about 90 percent of the integrity of the selected form for at least about two minutes; and which composition has a density sufficient to allow the composition to settle to a sediment water interface in the body of water and release alum at the sediment water interface. 14. A composition according to claim 13, which composition is a time-release sorbent that sorbs phosphate from the body of water. 15. A composition according to claim 13, comprising from 30 to 99 percent by weight of alum and from 1 to 70 percent by weight of the smectite mineral material. 16. A composition according to claim 13, further comprising a coating, which coating comprises a water soluble resin material selected from the group consisting of corn starch, guar gum, alginates, polyvinyl alcohol and partially hydrolyzed polyacrylamides. 17. A composition according to claim 16, which composition, when added to the body of water, retains at least about 90 percent of the integrity of the selected form for a period of time in the range of about 2 minutes and to about twenty-four hours. 18. A composition according to claim 16, comprising up to about 5 percent by weight of the water soluble resin material. 19. A composition according to claim 13, wherein the selected form of the composition has a diameter of from about 쩌 to about 24 inches. 20. A composition according to claim 13, wherein the composition has a density of from about 1.0 to about 2.0 gm/cm3. 21. A composition comprising a) alum, in an amount of from about 30 to about 99 percent by weight; b) a smectite mineral material, in an amount of from about 1 to about 70 percent by weight; and having a moisture content of from about 1 to about 15 percent by weight, which composition, when added to a body of water, retains at least about 90 percent of the integrity of the selected form for at least about two minutes; and which composition has a density sufficient to allow the composition to settle to sediment water interface in the body of water and release alum at the sediment water interface. 22. A composition according to claim 21, wherein the smectite mineral material is selected from the group consisting of: bentonite, attapulgite, saponite, hectorite, sepiolite and fullers earth. 23. A composition according to claim 21 wherein the composition is in a form selected from a tablet, extruded noodle, pellet, briquette and ribbon. 24. A composition according to claim 23, wherein the selected form of the composition has a diameter of from about 쩌 to about 24 inches. 25. A composition according to claim 21, wherein the composition has a density of from about 1.0 to about 2.0 gm/cm3. 26. A composition according to claim 21, further comprising a pH buffer in an amount up to about 30 percent by weight. 27. A composition according to claim 26, wherein the pH buffer is selected from the group consisting of sodium carbonate and calcium carbonate. 28. A composition according to claim 21, further comprising a coating comprising a water soluble resin material selected from corn starch, guar gum, alginates, polyvinyl alcohol and partially hydrolyzed polyacrylamides. 29. A composition according to claim 28, which composition, when added to a body of water, retains at least about 90 percent of the integrity of its form for a period of time in the range of about 2 minutes to about twenty-four hours.
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