BIPOLAR ELECTRODIALYZER AND PURIFICATION METHOD FOR AMINE FLUID USING SAME
First Claim
1. An electrodialyzer for regenerating an amine, comprising:
- a negative electrode;
a positive electrode opposing the negative electrode;
at least one bipolar membrane; and
anion exchange membranes,wherein one of the at least one bipolar membrane on the negative-electrode side and one of the anion exchange membranes in a position so as to face each other, form a compartment having an amine purification function,a pair of the anion exchange membranes in which each membrane opposes the other, form a compartment having an amine recovery function,another of the anion exchange membranes on the negative-electrode side and the positive electrode or another of the at least one bipolar membrane in a position so as to face each other, form a compartment having an acid recovery function, andbetween the negative electrode and the positive electrode, the compartment having an amine purification function, the compartment having an amine recovery function and the compartment having an acid recovery function are arranged in a direction from the negative electrode to the positive electrode.
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Accused Products
Abstract
Provided is an electrodialyzer for regenerating amines, comprising a negative electrode, a positive electrode, a bipolar film, and an anion exchange film. The electrodialyzer includes a chamber having an amine purification function, a chamber having an amine recovery function, and a chamber having an acid recovery function, between the facing negative electrode and positive electrode and in order in the direction from the negative electrode towards the positive electrode. The chamber having the amine purification function is surrounded by the bipolar film arranged on the negative electrode side and the anion exchange film arranged at a position facing the bipolar film. The chamber having the amine recovery function is surrounded by a set of facing anion exchange films, and the chamber having an acid recovery function is surrounded by the anion exchange film arranged on the negative electrode side, and the positive electrode or bipolar film arranged at a position facing the anion exchange film.
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Citations
9 Claims
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1. An electrodialyzer for regenerating an amine, comprising:
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a negative electrode; a positive electrode opposing the negative electrode; at least one bipolar membrane; and anion exchange membranes, wherein one of the at least one bipolar membrane on the negative-electrode side and one of the anion exchange membranes in a position so as to face each other, form a compartment having an amine purification function, a pair of the anion exchange membranes in which each membrane opposes the other, form a compartment having an amine recovery function, another of the anion exchange membranes on the negative-electrode side and the positive electrode or another of the at least one bipolar membrane in a position so as to face each other, form a compartment having an acid recovery function, and between the negative electrode and the positive electrode, the compartment having an amine purification function, the compartment having an amine recovery function and the compartment having an acid recovery function are arranged in a direction from the negative electrode to the positive electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification