Techniques for promoting current efficiency in electrochemical separation systems and methods

摘要

An electrochemical separation system may be modular and may include at least a first modular unit and a second modular unit. Each modular unit may include a cell stack and a frame. The frame may include a manifold system. A flow distribution system in the frame may enhance current efficiency. Spacers positioned between modular units may also enhance current efficiency of the system.

主权项

1. An electrochemical separation system, comprising:
a first electrode; a second electrode; a first electrochemical separation modular unit including a plurality of alternating depleting compartments and concentrating compartments positioned between the first and second electrodes; and a second electrochemical separation modular unit including a plurality of alternating depleting compartments and concentrating compartments, the second electrochemical separation modular unit arranged in cooperation with the first electrochemical separation modular unit and positioned between the first electrochemical separation modular unit and the second electrode; wherein each of the first and second electrochemical separation modular units includes a cell stack defining the plurality of alternating depleting compartments and concentrating compartments, and a support system configured to maintain vertical alignment of the cell stack, the support system comprising a frame surrounding the cell stack, and wherein the frame includes a manifold system and a flow distribution system in fluid communication with the manifold system, the flow distribution system comprising at least one bypass path configured to reduce current loss within the system.