Filter separator for separating a composite fluid

Details Filter separator for separating a composite fluid Filter separator for separating a composite fluid

1991-05-09

1995-12-12

Manoharan, Virginia

Liquid purification or separation

Sectional chamber press type

210262, 210294, 210298, 2103801, 210415, B01D 3300

Patent

active

054746752

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a filter separator for decomposing into its various components a fluid consisting of a liquid mixture containing solid components.
In numerous technical applications there occurs the problem of decomposing fluids containing solid components and liquids of different molecular structure, specifically of separating the solid components therefrom and the different liquid components from one another. Fluids of this type may for instance originate from sewages, sewage sludges, mashes, pharmaceutical liquids, from the fruit juice industry and generally from the food industry as well as from washing installations. Fluids of this type contain solid components of different kinds and compositions such as synthetic and natural fibres, soot, lubricant residues, toxides, oils, dissolved heavy metal compositions as well as detergents, surfactants and the like employed in washing processes. Fluids contaminated in this manner cannot be discharged into the sewage system nor can they be employed in subsequent production steps, but have rather to be decontaminated or decomposed. In many cases it is also desirable to reclaim the solid and liquid components of such fluids for renewed use or further processing and/or to concentrate the solid components for space-saving storage or disposal or as required for subsequent processing. This treatment should if possible be carried out in a contamination-free manner so as to avoid environment pollution. Installations capable of solving these problems and of being accommodated in a limited space, for instance in existing sewage disposal or treatment plants, car wash installations and various industrial installations, and additionally capable of high production or through-put rates, have not as yet become known. Up to the present the treatment of such fluids rather required intricate and voluminous installations with relatively extended filter surface areas, and the separation of sufficient amounts of clear filtrates required high pumping pressures for overcoming sediment-induced resistances.
It is an object of the invention to provide a filter separator of the type defined above, which is of compact construction and capable of separating the solid components from a composite fluid and of separating the liquid components thereof from one another.


SUMMARY OF THE INVENTION

The invention permits fluids containing solid components and composed of liquids having different molecular structures to be decomposed into their various components either in a continuous or charge-wise operation, and achieves this purpose with a compact construction which is readily serviceable, operates with economical energy consumption and is readily capable of being adapted to prevailing operative requirements by the proper selection of its dimensions and the filter media to be employed. In the filter separator according to the invention, the decomposition of solids-containing fluids into their components occurs in two different sections of the apparatus, namely, in a first section in which the solid components are concentrated by filtration of the fluid, proper selection of the filter medium employed in this first section also permitting at the same time one of the liquid components to be retained, and a second section in which the filtered fluid from the first section is decomposed into the remaining liquid components of different molecular structure.
According to the invention, respective rotary speed may be suitably controlled to thereby create transverse fluid flows of different speeds adjacent individual filter surfaces of the separator, these fluid flows being directed substantially tangential to the surface of the respective filter media and effective to prevent the filter media from being prematurely clogged by retained components, so that higher filtrate through-put rates and manifold increased product output can be achieved with a dynamically operated apparatus of relatively small dimensions.
For the generation of transverse fluid flows it was formerly customary to employ disc-

REFERENCES:
patent: 3497060 (1970-02-01), Tra et al.
patent: 4062771 (1977-12-01), Saupe
patent: 4714549 (1987-12-01), DiLeo
patent: 4935002 (1990-06-01), Gordon
patent: 5154825 (1992-10-01), Kupka
patent: 5234589 (1993-08-01), Sussich et al.
Ullmann's Encyclopedia of Industrial Chemistry, Edition 1988, vol. B2, pp. 10-48 to 10-54.

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