| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate adverse effects of sulfur accumulated in an electrolytic cell for electrolyzing sulfuric acid. <P>SOLUTION: An electrolysis apparatus 1 is equipped with: the electrolytic cell 2 into and from which a sulfuric acid solution can be introduced and discharged; electrodes composed of conductive diamond electrodes; a solution sending means for sending the sulfuric acid solution to the electrolytic cell; a power supply part 3 for applying a voltage between an anode and a cathode of the electrodes; and a power supply control part 4 that controls the power supply part for applying the forward-direction voltage between the anode and the cathode at normal electrolysis and, under a prescribed condition, carrying out polarity reversal whereby the voltage applied between the anode and the cathode is reversed. During normal operation, the apparatus 1 carries out the electrolysis by applying the forward-direction voltage between the anode and the cathode. Between normal operations, the apparatus 1 carries out polarity reversal whereby the voltage applied to the anode and the cathode is reversed so as to dissolve a sulfur deposit, which is produced inside the electrolytic cell during the normal operation, in the sulfuric acid solution during the polarity reversal operation, thereby enabling stable, continuous electrolysis. <P>COPYRIGHT: (C)2012,JPO&INPIT |
