Patent ID: 8585999
Filing Date: 2013-11-19
Classification: C02F,C25B

Abstract:
1. A method of forming a resin-impregnated monolithic graphite electrode, comprising: providing a first porous, monolithic plate comprising graphite and having a first surface, an opposite second surface, and an outer peripheral edge; contacting the first surface with a supply of a flowable, hardenable resin; causing a pressure differential across the first porous, monolithic plate such that the first surface is exposed to a first pressure, the second surface is exposed to a second pressure, and the first pressure is greater than the second pressure; causing the flowable, hardenable resin to flow through the first porous, monolithic plate from the first surface to the second surface to impregnate the first porous, monolithic plate and form a first impregnated monolithic plate; hardening the flowable, hardenable resin in the first impregnated monolithic plate, to form a first resin-impregnated monolithic graphite electrode; providing a second porous, monolithic plate comprising graphite and having a first surface, an opposite second surface, and an outer peripheral edge; providing an insulating spacer having an outside peripheral edge and an inside peripheral edge; constructing an electrolytic cell comprising an inlet and an outlet, the electrolytic cell comprising the first and second porous, monolithic plates spaced apart from one another by sandwiching the insulating spacer between the first surface of the first porous, monolithic plate and the first surface of the second porous, monolithic plate, such that the electrolytic cell has an interior cavity defined by the first surfaces of the first and second porous, monolithic plates and the inside peripheral edge of the insulating spacer, the interior cavity comprising an electrolytic reaction zone; contacting the first surface of the second porous, monolithic plate with a supply of a flowable, hardenable resin; causing a pressure differential across the second porous, monolithic plate such that the first surface of the second porous, monolithic plate is exposed to a first pressure, the second surface of the second porous, monolithic plate is exposed to a second pressure, and the first pressure is greater than the second pressure; causing the flowable, hardenable resin to flow through the second porous, monolithic plate from the first surface to the second surface to impregnate the second porous, monolithic plate and form a second impregnated monolithic plate; and hardening the flowable, hardenable resin in the second impregnated monolithic plate, to form a second resin-impregnated monolithic graphite electrode; wherein the contacting the first surfaces of the first and second porous, monolithic plates comprises filling the interior cavity of the electrolytic cell with the flowable, hardenable resin, under pressure.