The Dow Chemical Company

Hiep D Dang

Richard N Beaver

John R Pimlott

Gregory J Morris

Sandor Grosshandler

Roy L Hicks

Joel F Leathers

Mark J Hazelrigg

Frank W Spillers

Gary L Gardner, Sr

H Gene Newton

Gerald L Shoults

A membrane hanger device which secures a membrane and facilitates the handling of a membrane during installation and removal from an electrolytic cell. The installation time of the membrane is reduced because of better handling of the membrane.

Electrolysis cell membrane hanger

An electrolysis flat plate cell frame separating device for changing out one or more cells, gaskets and/or membranes from a stack in a flat plate membrane cell electrolyzer without having to shift other cells one at a time and a method of use.

Flat plate electrolysis cell frame separator and method

Method for forming a titanium lined electrochemical cell

A flat plate bipolar electrolytic cell frame unit has a plurality of connectors removably attachable to the centerboard. Anode and cathode plate supports or ribs have outer plate supporting edges and are cooperable with the connectors, when the latter are secured to the centerboard, to enable adjustment of the ribs to preselected positions whereat their edges define preselected planes, such that when the anode and cathode plates are subsequently welded to said edges and assembled with the connectors to the centerboard, the anode and cathode plates of adjacent bipolar cell units are parallel and closely spaced by a predetermined distance. The connectors are removably secured to the centerboard and the ribs are welded at their adjusted positions to their respective connectors. Thereafter the welded together connectors and ribs are removed from the centerboard to enable unencumbered welding of the anode and cathode plates to said edges of the anode and cathode ribs respectively. The connectors, with the ribs welded thereto and with the anode and cathode plates welded to their respective anode and cathode ribs, are then reassembled to the centerboard.

Flat plate bipolar cell

The invention is an electrochemical article suitable for use in monopolar or bipolar electrochemical cells comprising:

Plastic electrochemical cell terminal unit

The invention is an electrolytic unit comprised of a plurality of parts connected in a manner to form a substantially planar electrolytic unit comprising:

Fabricated electrochemical cell

The invention is a structural frame adapted for use in an electrochemical cell comprising:

Structural frame for an electrochemical cell

The invention is a method for making an electrolytic unit having

Method for making an electrolytic unit from a plastic material

An electrochemical cell structure frame and cell utilizing same comprising an organic plastic member having electrically conductive inserts extending through annular shoulders on respective coplanar surfaces of the plastic member. Electrically conductive, hydraulically impermeable anolyte and catholyte resistant covers matingly contact each respective coplanar surface of the plastic member. An electrically conductive, hydraulically permeable current collector is positioned substantially coplanar with and contacts at least a portion of one of the covers. An electrically conductive, hydraulically permeable, resilient mattress is positioned substantially coplanar with and contacts at least a portion of a side of the current collector opposite the side of the current collector which contacts the cover. A catalytically active electrode is positioned substantially coplanar with and contacts at least a portion of a side of the mattress opposite the side of the mattress which contacts the current collector.

A structural frame adapted for use in a solid polymer electrochemical cell, which comprises a generally planar organic plastic member having a plurality of horizontally and vertically spaced-apart shoulders protruding outwardly from opposing generally coplanar anolyte and catholyte surfaces of the plastic member. Electrically conductive, hydraulically impermeable, anolyte and catholyte corrosion resistant covers are matingly affixed to the respective surfaces of the plastic member. A hydraulically permeable, electrically conductive, current collector is contacting and positioned adjacent the catholyte cover. An ion exchange membrane, having an electrically conductive, electrocatalytic material bonded to or embedded in the surface of the membrane is positioned adjacent and in contact with the current collector. The frames are removably and sealably positioned in coplanar relationship, each plastic member being spaced apart by an anode on one side and a cathode on the other.

Structural frame for a solid polymer electrolyte electrochemical cell

The present invention is a structural frame particularly suitable for use in an electrochemical cell. The frame comprises an organic plastic member with a plurality of horizontally and vertically spaced-apart shoulders protruding outwardly from opposing generally coplanar anolyte and catholyte surfaces of the plastic member. Each of the shoulders annularly encircles and supports an electrically conductive insert extending from an exterior face of a shoulder on the catholyte surface of the plastic member, through the plastic member, to an exterior face of a shoulder on the anolyte surface of the plastic member. An electrically conductive substantially completely hydraulically impermeable anolyte cover is matingly affixed to the anolyte surface of the plastic member and adapted to minimize contact between the anolyte and the plastic member. The anolyte cover is resistant to the corrosive effects of the anolyte. An electrically conductive catholyte substantially completely hydraulically impermeable cover is matingly affixed to the catholyte surface of the plastic member and adapted to minimize contact between the catholyte and the plastic member. The catholyte cover is a metal resistant to the corrosive effects of the catholyte. The invention further includes an electrochemical cell ultilizing a plurality of the above described structural frames removably and sealably positioned in a generally coplanar relationship with each other and with each of the plastic members being spaced apart at least by an anode on one side of the plastic member and a cathode on an opposing side of the plastic member.

A tentering apparatus for tensioning a sheet-like member, for example, a membrane used in an electrolyzer. The apparatus includes four clamping assemblies arranged in a frame-shape configuration within an outer frame member, and a fastener, such as a threaded bolt and wing unit, for fastening the clamping assemblies to the outer frame members and for tensioning the sheet-like member.

Tentering frame for sheet-like members

The invention is an electrochemical terminal unit suitable for use in monopolar or bipolar electrochemical cells comprising: an electric current transmission element in the form of a substantially planar, continuous electrically conductive body having a plurality of bosses on at least one face of electric current transmission element; a metal liner having a profile matching the face of the electric current transmission element having the plurality of bosses; wherein said metal liner is made from a corrosion resistant metal and disposed over the opposite surfaces of said electric current transmission element; foraminous electrode components disposed over said liner and resting over said raised portions, said electrode components and said metal liner being connected together at least a portion of said bosses; and an electrical connection means for connecting a pole of an electric current power supply on at least one of the edges of said electric current transmission element.

Monopolar or bipolar electrochemical terminal unit having a novel

A tentering apparatus for tensioning a sheet-like member, for example, a membrane used in an electrolyzer. The tentering apparatus includes four clamping assemblies arranged in a picture frame shape configuration with four corner members and a connector member for connecting the clamping assemblies to the corner members and adapted for tensioning the sheet-like member.

A bipolar electrolytic cell assembly of the filter press-type comprising a first frame member, a second frame member, a separator interposed between the first and second frames to space apart an anode and cathode and a pre-compressed seal means interposed between at least the first or second frame member and the separator.

Growing community of inventors

Lake Jackson, TX, United States of America

Hiep D Dang