[특허]Spiral-wound hollow fiber membrane fabric cartridges and modules having flow-directing baffles

Spiral-wound hollow fiber membrane fabric cartridges and modules having flow-directing baffles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-063/02
출원번호	US-0095460 (1993-07-23)
발명자 / 주소	Prasad Ravi (Charlotte NC) Runkle Charles J. (Charlotte NC) Shuey Harry F. (San Dimas CA)
출원인 / 주소	Hoechst Celanese Corporation (Somerville NJ 02)
인용정보	피인용 횟수 : 47 인용 특허 : 0

초록 ▼

This invention provides spiral-wound hollow fiber membrane fabric-containing cartridges and modules for separations and other phase contact applications, in which the cartridges contain baffles that induce radial feed fluid flow in the shell side of the hollow fiber membrane bundle; and methods for

대표청구항 ▼

In a spiral-type hollow fiber membrane fabric-containing module, comprising: a. a plurality of hollow fiber membranes each having a lumen, said membranes being formed into a fabric-like array in which the hollow fibers substantially are mutually-parallel and constitute the fabric weft, and are held in spaced-apart relationship by filaments constituting the fabric warp; b. a hollow mandrel having a longitudinal axis and a cylindrical exterior surface, an axial bore, and perforations along the surface which communicate with the bore; c. the array being wound upon the axis such that the hollow fibers are substantially parallel to the axis, into a spirally-wound membrane bundle having two bundle ends and a cylindrical exterior surface; d. each of the two bundle ends being potted in resinous potting material serving to seal the bundle end into an adjacent monolithic tube sheet, a portion of the bundle between the two tube sheets being free from potting material to form a shell-side region, and the lumen ends of the hollow fibers constituting a first one of the bundle ends being exposed and communicating with the exterior of the bundle; e. a housing having first and second housing ends and a cylindrical housing interior and being suitably shaped to contain the membrane bundle, having means adjacent the first housing end sealing the tube sheet adjacent the first bundle end to the cylindrical housing interior, said housing which contains the bundle defining two regions mutually communicating through the membrane including (1) a shell-side space exterior to the portion of the bundle between the tube sheets and within the housing, and (2) a space including the hollow fiber lumens and the first bundle end; f. first end cap means adjacent the first housing end and suitably shaped, together with the cylindrical housing interior and the first bundle end, to seal the first housing end and define a first chamber communicating with the membrane lumens; g. second end cap means adjacent the second housing end and suitably shaped, together with the cylindrical housing interior and the second bundle end, to seal the second housing end and define a second chamber; and h. the housing having at least one port communicating with the first chamber, arranged to permit fluid injection and withdrawal therethrough; the improvement comprising: i. impermeable wrapping means covering the cylindrical exterior surface of the bundle; j. at least two axially-symmetrical axial sealing means formed within the shell-side region in a shape which is rotationally symmetrical about the axis, said axial sealing means being spaced apart from each other along the axis, each of said axial sealing means being in sealing engagement with the mandrel and extending to a perimeter which is located at a distance away from the cylindrical housing interior, each forming a perimeter sub-portion of the shell-side region between the cylindrical interior of the housing and the perimeter of the axial sealing means which is unobstructed to fluid flow, said axial sealing means dividing the shell-side region into a plurality of shell-side portions in mutual fluid communication through the perimeter sub-portions; k. means completely obstructing the axial bore at the point where each axial sealing means is in sealing engagement with the mandrel; l. at least one axially-symmetrical perimeter sealing means formed within the shell-side region in a shape which is rotationally symmetrical about the axis, said perimeter sealing means being interposed between two axial sealing means, and in sealing engagement with the impermeable wrapping means and extending to a distance away from the mandrel, forming an axial sub-portion of the shell-side region which is unobstructed to fluid flow, said perimeter sealing means dividing the shell-side region into two shell-side portions in mutual fluid communication through the axial sub-portion; and m. means completely obstructing the axial bore where the mandrel intersects the axial sub-portion.

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Spiral-wound hollow fiber membrane fabric cartridges and modules having flow-directing baffles 원문보기

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