Process and apparatus for agglomeration of powders
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0169788
(2000-01-12)
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국제출원번호 |
PCT/DK00/000009
(2000-01-12)
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§371/§102 date |
20021029
(20021029)
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국제공개번호 |
WO00/021654
(2000-04-20)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
7 인용 특허 :
4 |
초록
▼
A process and an apparatus for agglomeration of powders wherein the powder is brought into contact with an agglomeration fluid while being air-borne and collected on a surface all parts of which are moving at substantially the same speed, after which the agglomerated powder is moved away from the mo
A process and an apparatus for agglomeration of powders wherein the powder is brought into contact with an agglomeration fluid while being air-borne and collected on a surface all parts of which are moving at substantially the same speed, after which the agglomerated powder is moved away from the moving surface by means of a centrifugal acceleration of at least 50 m/s2.
대표청구항
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The invention claimed is: 1. A process for agglomeration of powders, comprising the following steps: providing a moving surface moving in a curvilinear motion with all parts of said moving surface moving at substantially the same speed; and bringing powder to be agglomerated into contact with an ag
The invention claimed is: 1. A process for agglomeration of powders, comprising the following steps: providing a moving surface moving in a curvilinear motion with all parts of said moving surface moving at substantially the same speed; and bringing powder to be agglomerated into contact with an agglomeration fluid while being directed towards the moving surface onto which the powder being agglomerated is collected and the powder being agglomerated subsequently moved away from the moving surface by influence of centrifugal force, wherein the agglomerated powder is moved away from the moving surface by means of a centrifugal acceleration of at least 50 m/s2, wherein the moving surface is a curved surface of a cylinder or drum rotating about its central axis. 2. A process according to claim 1, wherein the centrifugal acceleration is in the range from 50-5000 m/s2. 3. A process according to claim 1 or 2, wherein the moving surface is moving at a speed of at least 2.5 m/s. 4. A process according to claim 1, wherein the moving surface is substantially impervious to fluids. 5. A process according to claim 1, wherein the cylinder or drum has a diameter in the range from 0.25 m-1.50 m. 6. A process according to claim 1, wherein the cylinder or drum is rotating at a speed in the range from 80-2000 rpm. 7. A process according to claim 1, wherein the agglomerated powder is classified and fines recirculated for further agglomeration. 8. A process according to claim 1, wherein the powder is coffee and/or coffee substitute powder. 9. An apparatus (1) for agglomeration of powders, said apparatus comprising: a movable surface (4) for collection of the powder ( 5) being agglomerated means (3) for bringing the powder to be agglomerated into contact with one or more agglomeration fluids (8, 9) while being directed towards the movable surface (4); and means for moving the movable surface, wherein the movable surface (4) is configured such that the collected powder (5) being agglomerated is moved away from the moving surface by influence of centrifugal force when the apparatus is in operation, and wherein the movable surface (4) is configured such that all parts thereof are moving at substantially the same speed when the apparatus is in operation, and that the apparatus is adapted to provide the collected powder (5) being agglomerated with a centrifugal acceleration of at least 50 M/s2 so as to move it away from the moving surface, wherein the movable surface (4) is the curved surface of a cylinder or drum (2). 10. An apparatus according to claim 9, wherein the centrifugal acceleration in the range from 50-5000 m/s2. 11. An apparatus according to claim 9, wherein the movable surface (4) is substantially impervious to fluids. 12. An apparatus according to claim 9, wherein the cylinder or drum (2) has a diameter in the range from 0.25 m-1.50 m. 13. An apparatus according to claim 9, wherein the moving means rotates the cylinder or drum (2) at a speed in the range from 80-2000 rpm. 14. An apparatus according to claim 9, wherein the means ( 3) for bringing the powder to be agglomerated into contact with one or more agglomeration fluids (8, 9) while being directed towards the movable surface (4), comprises one or more tubings ( 7) having a substantially annular opening for introduction of the powder (5) to be agglomerated and a tubing (10) positioned centrally within each annular opening for introduction of the agglomeration fluid(s) and optionally an atomizing gas, the centrally positioned tubing (10) ending in an atomizing nozzle (11) at the level of the mouth of the annular opening. 15. An apparatus according to claim 14, wherein the atomizing nozzle (11) is a two fluid nozzle for atomization of a liquid with a gas. 16. An apparatus according to claim 14 or 15, wherein the atomizing nozzle (11) protrudes a small distance from the mouth of the annular opening. 17. An apparatus according to claim 9, wherein the means ( 3) for bringing the powder to be agglomerated into contact with one or more agglomeration fluids while being directed towards the movable surface, debouches at a distance of 0.10 m-1.00 m from the movable surface (4). 18. An apparatus according to claim 9, wherein the distance between the movable surface (4) and the mouth of the means ( 3) for bringing the powder to be agglomerated into contact with one or more agglomeration fluids while being directed towards the movable surface, is adjustable. 19. An apparatus according to claim 9, wherein the speed of the movable surface (4) is adjustable. 20. An apparatus according to claim 9, further comprising a fluid bed (16) for post-drying and cooling of the agglomerated powder. 21. An apparatus according to claim 9, further comprising a conveyer belt (17) for post-drying and cooling of the agglomerated powder.
이 특허에 인용된 특허 (4)
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Hansen Karl Erik (Copenhagen DK) Hansen Ove (Vaerlose DK), Method for producing agglomerated powders and apparatus for performing the method.
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Paulson Danton L. (Albany OR) Worthington Robert B. (Albany OR), Method of agglomerating fine powders.
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Buhler Marcel (Tolochenaz CHX) Darbyshire John (Yverdon CHX) Jaccard Michel (Orbe CHX), Process for agglomerating food products.
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Gergely Gerhard,ATX ; Tritthart Wolfram,ATX, Process for producing a granulated material.
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Beetz, Charles P.; Corbett, Robert; Salem, David, Methods and apparatus for low heat spray drying.
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Beetz, Charles P.; Corbett, Robert; Salem, David, Methods and apparatus for low heat spray drying.
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Beetz, Charles Pershing; Corbett, Robert; Salem, David, Methods and apparatus for low heat spray drying.
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Beetz, Charles Pershing; Beetz, Jason Andrew, Ultrahigh efficiency spray drying apparatus and process.
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Beetz, Charles Pershing; Beetz, Jason Andrew, Ultrahigh efficiency spray drying apparatus and process.
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Beetz, Charles Pershing; Beetz, Jason Andrew, Ultrahigh efficiency spray drying apparatus and process.
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Beetz, Charles Pershing; Beetz, Jason Andrew, Ultrahigh efficiency spray drying apparatus and process.
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