Liquid purification or separation – Casing divided by membrane into sections having inlet – Energy recovery from treated liquid
Patent
1980-11-05
1982-09-07
Spear, Jr., Frank A.
Liquid purification or separation
Casing divided by membrane into sections having inlet
Energy recovery from treated liquid
210356, B01D 3100
Patent
active
043482830
ABSTRACT:
A reciprocating dialyzer is described for use as an artificial kidney or other extracorporeal mass transfer device. A dialyzer unit includes a membrane package having an aligned pair of thin semi-permeable membranes forming a chamber between the interior faces to receive fluid (such as blood) to be treated, and spacing elements in dialyzate chambers at the exterior faces of the membranes which contact the membrances and limit their expansion, while allowing chemical transfer to the dialyzate slurry. A plurality of such treatment units received between spaced plates comprises a dialyzer. Blood flow into and out of the membrane packages is through a central conduit, with free slurry being introduced and withdrawn from the dialyzate chamber at the periphery of each unit. The spacing elements are flexible and of plastic with molded, porous or mesh material modified to provide central and rim seals as well as membrane engaging faces designed to limit membrane displacement and cause formation of a thin blood column while not unduly masking the membrane surfaces and allowing slurry flow at all times including when the blood chamber is filled with blood. Certain spacing elements also allow emptying of blood from the dialyzer without need for positive pressure on the fluid outside the dialyzer.
REFERENCES:
patent: 3362540 (1968-01-01), Bluemle, Jr.
patent: 3411630 (1968-11-01), Alwall et al.
patent: 3412865 (1968-11-01), Lontz et al.
patent: 4071444 (1978-01-01), Ash et al.
patent: 4132649 (1979-01-01), Croopnick et al.
Harris Robert E.
Nesbitt John R.
Purdue Research Foundation
Spear, Jr. Frank A.
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