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Non-fouling flow through capacitor system
| Details |
Inventors: Andelman, Marc D.;
Assignee:
Primary Examiner: Therkorn; Ernest G.
Assistant Examiner:
Attorney, Agent or Firm: Crowley; Richard P.
A foul-resistant, flow-through capacitor, a system employing the capacitor and a method of separation is disclosed wherein the capacitor has at least one anode and cathode electrode pair. The electrodes are formed of high surface area, electrically conductive material and have an open, preferably straight, fluid flow-through path. Typically, the flow path is formed by a plurality of straight, parallel, spaced apart electrodes with the flow path not greater than one of the X-Y-Z distance components of the capacitor. The flow-through capacitor avoids fouling in use and may be employed with saturated waste or other streams. |
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DETAILED DESCRIPTION The invention relates to a foul-resistant capacitor, system and method, and in particular, a capacitor, system and method for the separation of solutes or fluids which tend to clog or foul the capacitor.
The invention comprises a flow-through capacitor having at least one anode and at least one cathode adapted to be connected to a power supply, the capacitor arranged and constructed for use in the separation, electrical purification, concentration, recovery or electrochemical treatment or breakdown of solutes or fluids, particularly solutes and fluids which are saturated or substantially saturated and which tend to foul the capacitor.
The capacitor includes one or more spaced apart pairs of anode and cathode electrodes incorporating a high surface area electrically conductive material and characterized by an open, short solute or fluid flow path, which flow paths are in direct communication with the outside of the capacitor.
The fouling-resistant, flow-through capacitor of the invention is able to treat saturated solutions.
The flow-through capacitor takes into account that subsequent formation of fouling precipitates and crystals from a super-saturated solution is a kinetic process.
Therefore, the flow-through capacitor design is configured such that the fluid flow path through the capacitor is short, generally straight and open.
To allow optimal and unobstructed wash out of solids in the capacitor, it is also desirable for this flow path to be open directly to the outside of the capacitor and not have to pass directly through multiple holes or constrictions.
Therefore, the open channels created by the spaced apart electrodes communicate directly with the outside surface of the capacitor.
These channels are not circumscribed by a gasket, but preferably have one dimension completely free of obstruction to flow.
Where possible, it is also preferable to make the flow path wide.
A short, straight, open flow path, communicating directly with the outside surface of the capacitor has many advantages
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Metal Working 
