Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Semiconductor manufacture

Ultrafiltration-apparatus

Membrane separation of hydrocarbons

OF THE INVENTION As was previously discussed, the present invention relates to a process for the ...

Chromatographic separation method and associated apparatus

The present invention has met the above-described need by providing means for effectively ...

Nickel and cobalt alloys which contain tungsten aand carbon and have been processed by rapid solidification process and method

OF THE INVENTION In accordance with the present invention nickel and cobalt base alloys containing ...

Photomask blank and photomask

It is an object of this invention to overcome the problems encountered with respect to known hard ...

Fine screen and fine screen stack, their use and process for the manufacture of fine screens

The problem addressed by the invention is the creation of fine screens which combine the good ...

Inorganic porous membrane

What is claimed is: 1. A multilayer inorganic porous membrane consisting of a monolayer or ...

Spray-applied fluoropolymer films for gas separation membranes

What is claimed is: 1. A Process for preparing a gas separation membrane comprising a microporous ...

Gas drying apparatus and method

I have found that a certain arrangement of perforated plates will enhance the efficiency of ...

Integral honeycomb-like support of very thin single crystal slices

What is claimed is: 1. A method of forming very thin semiconductor slices which comprises the steps ...

Methods for producing hollow microspheres made from dispersed particle compositions

The present invention relates to hollow microspheres made from dispersed particle film forming ...

Ultrafiltration apparatus

Details

Inventors: Niesen, Lawrence J.;
Assignee:
Primary Examiner: Spear; Frank
Assistant Examiner:
Attorney, Agent or Firm: Kenyon & Kenyon

An ultrafiltration apparatus in which a plurality of support panels are arranged to form a stack, with panel faces each carrying a membrane for separating a base liquid into two fractions. Apertures are formed in the panels, and the stack is arranged so that these apertures are in registration to form ducts within the stack. Longitudinal ribs are formed in the panel faces, with longitudinal channels on either side of same. Transverse ribs are formed between adjacent longitudinal channels, with transverse channels between adjacent such ribs. Turbulence reduction flanges are inserted between selected panels within the stack to divide same into subassemblies, which direct fluid flow from the top of one subassembly to the bottom of the succeeding subassembly, providing bottom-to-top flow across the panel faces throughout the stack. The fraction of base fluid that flows through the membrane is collected in the transverse channels and thense flows in the longitudinal channels to a permeate extraction duct, where such permeate can be extracted.

DETAILED DESCRIPTION It is an object of this invention to provide an ultrafiltration apparatus that permits improved operation over a wide range of base liquid viscosities.
Another object of the invention is an improved membrane support for an ultrafiltration apparatus.
A further object of the invention is to provide a membrane support for an ultrafiltration apparatus that allows for uniform flow across the surface of the support.
Yet another object of the invention is the provision of an ultrafiltration apparatus that offers improved performance in reducing the turbulence associated with the transition from one stack subassembly to another such subassembly.
These and other objects are achieved in the present invention.
In a preferred embodiment, an ultrafiltration apparatus includes a plurality of support panels arranged to form a stack.
Each panel is generally flat and rectangular in shape, with two flat faces identically formed.
Raised edges run around the periphery of one face of each panel to allow base liquid to flow between adjacent panels in the stack.
Two apertures are formed near the periphery of each panel, preferably on opposite sides thereof.
Panels are stacked with these apertures in alignment, to form inlet and outlet ducts.
Two types of rings are carried around the perimeter of each aperture, with rings of the same type disposed on one panel face.
Distribution rings, include distribution apertures in the periphery of the ring to direct fluid flow in selected directions, and sealing rings have flat upper surfaces.
Panels are stacked with the distribution rings of one panel bearing against the sealing rings of the adjacent panel, effecting a seal within the duct.
A membrane is carried on each face of each panel, overlying the raised edges thereof, so that the clamping force exerted by such edges of adjacent panels forms a seal for the stack as a whole.
Longitudinal ribs, running from one aperture to the other and preferably spaced equidistantly, are formed in both faces of each panel, with longitudinal channels disposed on either side of each such rib

Related patents

	Uncooled far infrared thermal imaging system This invention is an uncooled system for converting a far-infrared image to a visible image or near-infrared image. The system includes a transducer onto one side of ...
	Method of forming a flash EEPROM device by employing polysilicon sidewall spacer as an erase gate What is claimed is: 1. A method of fabricating a Flash EEPROM device having an array of cells, the method comprising: 1) providing peripheral PMOS and NMOS transistors ...
	Etchant and array substrate having copper lines etched by the etchant Accordingly, the present invention is directed to an etchant and an array substrate having copper lines etched by the etchant that substantially obviates one or more of ...
	Micromechanical sensor We claim: 1. A micromechanical sensor comprising a plurality of cantilever sensing elements supported on a substrate at respective support regions, a first set of said ...
	Structure or construction for mounting a pressure detector The main object of the present invention is to solve the above-mentioned problem encountered when the diaphragm type pressure detector having the constitution shown in FI...
	Process for applying a composite insulative coating to a substrate What is claimed is: 1. A process for applying an adherent electrically insulative moisture-resistant composite coating to a substrate, the process comprising the steps ...
	Shielded energy transmitting surgical instrument and methods therefor Accordingly, it is a primary object of the present invention to overcome the above mentioned disadvantages of prior art instruments and methods of treating tissue with ...
	Separator for an alkaline cell and a method of producing the separator What is claimed is: 1. A method of producing a separator for an alkaline cell, comprising the steps of: winding a base paper for a separator to form a cylindrical body, ...
	Coatings for cutting implements We claim: 1. A method of treating an edged cutting implement which comprises depositing a coating of a refractory material on the implement by means of sputter ion ...
	Press-cushion sheet We claim: 1. A press-cushion sheet comprising a multiple-ply woven fabric having three- to six-ply weave structure and composed of warps and wefts consisting of heat-...

0.014
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved