IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0519152
(2011-01-20)
|
등록번호 |
US-8876365
(2014-11-04)
|
국제출원번호 |
PCT/US2011/021838
(2011-01-20)
|
§371/§102 date |
20120626
(20120626)
|
국제공개번호 |
WO2011/091123
(2011-07-28)
|
발명자
/ 주소 |
- Pollard, Maria
- Strand, Steven R.
- Eversdyk, David A.
- Schaefer, Matthias
|
출원인 / 주소 |
- Dow Global Technologies LLC
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
13 |
초록
▼
The invention provides a mixing system comprising the following: A) at least one extensional flow mixer comprising:a generally open and hollow body having a contoured outer surface and having:a single entrance port and a single exit port;a design for compressing a bulk stream, anda design for broade
The invention provides a mixing system comprising the following: A) at least one extensional flow mixer comprising:a generally open and hollow body having a contoured outer surface and having:a single entrance port and a single exit port;a design for compressing a bulk stream, anda design for broadening the bulk stream and the at least one injected additive stream;B) a flow conductor; andC) a primary additive stream injector, as described herein; andwherein the extensional flow mixer is followed by D) a first helical static mixing element that is at least one half “flow conductor diameter (D1)” downstream of the exit port of the extensional flow mixer; andwherein the mixing system comprises at least four helical static mixing elements, placed such that the leading edge of the first helical static mixing element is located perpendicular to the main axis (major axis) of the exit port of the extensional flow mixer.
대표청구항
▼
1. A mixing system comprising the following: A) at least one extensional flow mixer comprising:a generally open and hollow flow mixer body having a contoured outer surface and having:a single entrance port and a single exit port;a means for compressing a bulk stream flowing through the generally ope
1. A mixing system comprising the following: A) at least one extensional flow mixer comprising:a generally open and hollow flow mixer body having a contoured outer surface and having:a single entrance port and a single exit port;a means for compressing a bulk stream flowing through the generally open and hollow body in a direction of flow, and at least one injected additive stream introduced at the single entrance port in the direction of flow; anda means for broadening the bulk stream and the at least one injected additive stream, such that an interfacial area between the bulk stream and the at least one injected additive stream is increased as the bulk stream and the at least one injected additive stream flow through the generally open and hollow flow mixer body in the direction of flow to promote mixing of the bulk stream and the at least one injected additive stream;B) a flow conductor having a longitudinal axis and having a the generally open and hollow flow mixer body secured therein; andC) a primary additive stream injector positioned at the entrance port of the generally open and hollow flow mixer body, wherein the primary additive stream injector injects an additive stream into the interior of the flow mixer in the direction of flow, when the bulk stream is flowing through the generally open and hollow flow mixer body, to allow for compression and broadening of the bulk stream and the additive stream together within the extensional flow mixer, to facilitate mixing of the bulk stream and the primary additive stream at an exit of the extensional flow mixer; andwherein the extensional flow mixer is followed by D) a first helical static mixing element that is at least one half “flow conductor diameter (D1)” downstream of the exit port of the extensional flow mixer; andwherein the mixing system comprises at least four helical static mixing elements, placed such that the leading edge of the first helical static mixing element is located perpendicular to a main axis (major axis) of the exit port of the extensional flow mixer. 2. The mixing system of claim 1, wherein the means for compressing and the means for broadening each includes a plurality of contoured lobes, each lobe having a substantially contoured surface, and wherein the plurality of contoured lobes in the means for compressing decrease in size in the direction of flow, and the plurality of contoured lobes in the means for broadening increase in size in the direction of flow. 3. The mixing system of claim 1, wherein the means for compressing lie in a compression plane, and the means for broadening lie in a broadening plane perpendicular to the compression plane. 4. The mixing system of claim 1, wherein the means for compressing decreases in size along the compression plane in the direction of flow, and the means for broadening simultaneously increases in size along the broadening plane in the direction of flow. 5. The mixing system of claim 1, wherein the first helical mixing element is not more than “four flow conductor diameters (4D1)” downstream of the exit port of the extensional flow mixer. 6. The mixing system of claim 1, further comprising of at least one high-shear, high-pressure drop static mixing element, comprising an array of crossed bars arranged at an angle of 45° against the axis, and arranged in such a way, that consecutive mixing elements are rotated by 90° around the axis, and placed downstream of the first helical static mixing element. 7. The mixing system of claim 1, wherein the primary additive stream injector is positioned at the center of the entrance port. 8. The mixing system of claim 1, wherein the primary additive stream injector is positioned along a longitudinal axis of the generally hollow flow mixer body. 9. The mixing system of claim 8, wherein the additive stream injector is further positioned at the center of the single entrance port. 10. The mixing system of claim 1, wherein the bulk stream received by the single entrance port comprises at least one of a polymer and a polymer solution. 11. The mixing system of claim 1, wherein the additive stream received by the single entrance port comprises at least one of a monomer and a monomer solution. 12. The mixing system of claim 11, wherein the additive stream comprises a monomer solution, and wherein the monomer solution is ethylene dissolved in solvent. 13. The mixing system of claim 1, wherein the additive stream received by the single entrance port comprises at least one of an additive or additive in solution. 14. The mixing system of claim 13, wherein the additive stream received by the single entrance port is selected from a group consisting of antioxidants, acid scavengers, catalyst kill agents, and solutions thereof. 15. The mixing system of claim 1, wherein the means for compressing comprises a compression region, which comprises two compression region lobes that meet at a constricted central entrance portion, and the broadening region comprises two broadening region lobes that meet at a constricted central exit portion. 16. The mixing system of claim 1, wherein the first helical static mixing element is located at a distance from “one half the diameter of the flow conductor (½ D1)” to “twice the diameter of the flow conductor (2 D1)” downstream of the exit port of the extensional flow mixer. 17. The mixing system of claim 1, wherein the flow conductor is a cylinder that has a length to diameter ratio (L1/D1) greater than, or equal to, 7. 18. The mixing system of claim 1, wherein the system comprises at least ten helical static mixing elements, followed by at least one high shear, high pressure drop static mixing element. 19. The mixing system of claim 1, wherein the system comprises at least eight helical static mixing elements, followed by at least one high-shear, high pressure drop static mixing element.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.