Rhone-poulenc S.a.

Michel Salmon

Jacques Baudet

Bernard Vogt

Andre Sausse

Xavier Marze

Bernard Favre

Michel Rochet

Gilbert Christen

Jean Roget

Rene Thuillier

Hollow fibre fluid fractionating apparatus in which the hollow fibres are twisted together to form cords which are assembled in a bundle in a fluid fractioning apparatus. The twists in the hollow fibres tend to break up boundary layers around the hollow fibres and improve the fractionating.

Fluid treatment apparatus

A gas/liquid heat exchanger is provided which comprises means for circulating gas and/or liquid and a plurality of hollow fibres, adapted to receive said gas or said liquid, said fibres being of polymeric material which is inert with respect to said liquid and are permeable to said liquid. Such a heat exchanger considerably improves the efficiency/volume ratio of the appratus, largely as a result of the liquid which permeates through the fibres vaporizing.

Process for carring out a gas/liquid heat-exchange

A hollow fiber is provided possessing a continuous longitudinally extending channel free from macromolecular material, said fiber consisting essentially of a copolymer of acrylonitrile and an olefinically unsaturated comonomer containing an optionally salified sulphonic acid group, and possessing micropores of average diameter less than about 100 A, between 40% and 80% of walls of the fiber being empty space. This fiber can be prepared by injecting a solution of a copolymer of acrylonitrile and an olefinically unsaturated comonomer containing an optionally salified sulphonic acid group in at least one polar organic solvent into a spinneret with an annular orifice, and immediately coagulating the inside and the outside of the nascent hollow fibre issuing from the spinneret with a coagulating fluid which is selected from:

Hollow fibres

A unit cell for fluid fractionating apparatus, fractionating apparatus including such cells and methods of making the cells in which a plurality of hollow fibers are arranged linearly in at least one groove formed in a core, the groove or grooves supporting all or part of the hollow fibers and acting as a bed for said fibers, two end walls of hardened glue securing the hollow fibers to one another and at their ends these walls being firmly secured to the core. The core may be for example of channel shaped, H-shaped, cross-shaped or star-shaped cross-section, and the cell may be enclosed in a jacket having at least one fluid inlet and at least one fluid outlet passage. The construction of the cells makes for easy manufacture by winding the fibers or bundling the fibers and placing them in the grooves of the core and securing them in place by the hardened glue end walls.

Fluid fractionation apparatus and method of manufacturing the same

An assembly of hollow fibers for use in fluid treatment apparatus and apparatus incorporating such assemblies, in which a primary frame is provided with a central window defined by edges at least two of the opposite edges being thinned down to form hollows. A web of hollow fibers is placed in the hollows and is secured in place, and the fibers secured to one another, by a mass of hardened resin material in at least one of the hollows. The assemblies are mounted in a container, through which a first fluid is caused to flow, the fluid passing around the fibers and through the windows before leaving the container. The interiors of the hollow fibers are connected to the exterior of the container so that either fluid permeate flows out of the apparatus via the interiors of the fibers or a second fluid is caused to flow through the interiors of the fibers if some form of fluid exchange is desired.

Hollow fiber assembly for use in fluid treatment apparatus

Hollow fiber fluid fractionating apparatus in which the hollow fibers are twisted together to form cords which are assembled in a bundle in a fluid fractioning apparatus. The twists in the hollow fibers tend to break up boundary layers around the hollow fibers and improve the fractionating.

Fluid fractionating apparatus and a unit for use therein, the unit being positionable in a jacket having at least one fluid inlet and at least one fluid outlet, the unit including at least one leakproof band wound up in the form of a spiral cylinder, the turns of which are radially spaced from one another. A multiplicity of hollow fibres are wound around the turns of the spiral cylinder and extend therebetween. Two end walls extend perpendicular to the axis of the spiral cylinder, and may be formed of a solidified glue, the walls being located one at each end of the cylinder and firmly fixed to the leakproof band of the hollow fibres, at least some of the fibres crossing right through at least one of the end walls and opening on the side thereof outside the spiral cylinder. An opening, which may be provided with a hollow mandrel extending into the interior of the innermost turn of the spiral, is used for feeding the fluid thereto or removing it therefrom. The unit element may be formed by winding a plurality of hollow fibres around a leakproof band, coiling the leakproof band together with the hollow fibres into a cylindrical spiral, gluing the ends of the spiral cylinder thus produced and cutting the ends of the hollow fibres.

Growing community of inventors

Mions, France

Michel Salmon