IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0328248
(2006-01-10)
|
등록번호 |
US-7261284
(2007-08-28)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A process for effecting mass transfer between a liquid phase and a gaseous phase in a filled-type column comprising an external shell which accommodates at least one filler-containing basket wherethrough the phases are caused to flow in countercurrent relationship, advantageously comprises the step
A process for effecting mass transfer between a liquid phase and a gaseous phase in a filled-type column comprising an external shell which accommodates at least one filler-containing basket wherethrough the phases are caused to flow in countercurrent relationship, advantageously comprises the step of feeding the gaseous phase to the at least one basket through a gas-permeable surface thereof which is larger than the basket cross-section, preferably in a prevailing radial flow direction.
대표청구항
▼
What is claimed is: 1. Filled-type column for mass transfer between a liquid phase and a gaseous phase, comprising: an external shell (2) substantially cylindrical in shape; at least one basket (3a-3c) for containing the filler (4) disposed inside said shell (2), coaxially therewith and provided wi
What is claimed is: 1. Filled-type column for mass transfer between a liquid phase and a gaseous phase, comprising: an external shell (2) substantially cylindrical in shape; at least one basket (3a-3c) for containing the filler (4) disposed inside said shell (2), coaxially therewith and provided with plane opposite sidewalls (19,20), which are gas-permeable, said at least one basket (3a-3c) being through-penetrated by said phases in countercurrent relationship with said liquid phase in a substantially axial flow direction; respective means (5,6) for feeding said liquid phase and said gaseous phase into said column; respective means (7,8) for extracting said liquid phase and said gaseous phase from said column; first and second free spaces (21,22), located opposite to each other and defined between an inner wall (2a) of said shell (2) and said sidewalls (19,20) of the basket (3a-3c), said free spaces having a means (19a, 20a, 23) for causing at least a major portion of said gaseous phase to flow through said at least one basket (3a-3c), from said first free space (21) to said second free space (22) or the other way round characterized in that said at least one of said basket sidewalls (19,20) comprises, at a top end of said at least one basket (3a-3c), respectively at a top end of each zone (3a-3c), a gas-impermeable portion (19a,20a) of predetermined length. 2. Column according to claim 1, characterized in that said at least one basket (3a-3c) is open-ended at the top. 3. Column according to claim 1, characterized in that said at least one basket (3a-3c) comprises a gas-impermeable cover (17) at its top end. 4. Column according to claim 1, characterized in that said at least one basket (3) is divided into a plurality of contiguously superimposed zones (3a-3c), said means (19a, 20a, 23) for causing at least a major portion of said gaseous phase to flow through the basket (3) from said first free space (21) to said second free space (22), or the other way round, being provided at each of said zones (3a-3c). 5. Column according to claim 1, characterized in that the length of said gas-impermeable portion (19a,20a) is different length for either basket sidewalls (19,20). 6. Column according to claim 5, characterized in that said gas-impermeable portion (19a,20a) stretches over 5% to 30% of the length of said sidewalls of the basket (3a-3c), respectively of the length of said zone (3a-3c). 7. Colunm according to any one of claim 1, characterized in that said at least one basket (3a-3c), respectively each of said zones (3a-3c), comprises gas-impermeable closure means (23) for said free spaces disposed at said first and said second free space (21,22). 8. Column according to claim 7, characterized in that said closure means comprise a gas-impermeable baffle (23) disposed at a bottom end of said first free space (21), respectively of said zones (3a-3c), and a gas-impermeable baffle (23) disposed at a top end of said second free space (22), respectively of said zones (3a-3c), or a gas-impermeable baffle (23) disposed at a top end of said first free space (21), respectively of said zones (3a-3c), and a gas-impermeable baffle (23) disposed at a bottom end of said second free space (22), respectively of said zones (3a-3c). 9. Column according to claim 1, characterized in that it comprises a plurality of baskets (3a-3c) for containing the filler (4) which are superimposed and disposed coaxially within said shell (2). 10. Column according to claim 9, characterized in that said baskets (3a-3c) have a perforated bottom (13). 11. Column according to claim 10, characterized in that said perforated bottom (13) is suitably sized to deflect the gaseous phase in radial direction, respectively crosswise direction, and/or to collect and re-distribute the liquid phase between successive baskets (3a-3c). 12. Column according to claim 9, characterized in that baskets (3a-3c) are contiguous with one another and/or different in length.
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