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公开(公告)号：US5141563A
公开(公告)日：1992-08-25
申请号：US452861
申请日：1989-12-19
摘要： A method is now utilized for stripping costly electrocatalytic coatings from valve metal substrates while maintaining excellent integrity of the substrate metal. The removed metal may also be conveniently recovered. A molten salt bath of alkali metal hydroxide and alkali metal salt of an oxidizing agent is employed. Careful electrode to bath contact times and bath temperatures are observed. Additionally, a dilute mineral acid rinse and water rinse, with scrubbing in one of the rinses follows such molten salt bath contact for the electrode. Solids recovered from the rinses are combined.
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公开(公告)号：US06395153B1
公开(公告)日：2002-05-28
申请号：US09655967
申请日：1999-09-10
申请人： Rudolf C. Matousek , Mark L. Arnold , Barry L. Martin , Eric J. Rudd , Lynne M. Ernes , Zoilo J. Colon , Gary F. Wyman , Joseph J. Chance
发明人： Rudolf C. Matousek , Mark L. Arnold , Barry L. Martin , Eric J. Rudd , Lynne M. Ernes , Zoilo J. Colon , Gary F. Wyman , Joseph J. Chance
IPC分类号： C25B900
摘要： The present invention pertains to electrolytic diaphragm cells, particularly for the electrolysis of brine to produce chlorine and caustic. The innovation resides generally in the discovery that electrolytic cell operation can be desirably enhanced by compressing the diaphragm between anode and cathode. This compression of the diaphragm reduces the diaphragm thickness from an original thickness, e.g., from an original thickness of a diaphragm freshly deposited on a cathode. The reduced thickness of the diaphragm provides for cell operation that is less than zero gap operation. By maintaining the diaphragm under compression and in a reduced thickness, the cell operates with a narrower interelectrode gap and consequently at a desirably reduced cell voltage.
摘要翻译： 本发明涉及电解隔膜电池，特别是用于电解盐水以产生氯和苛性碱。 该创新通常在于通过在阳极和阴极之间压缩膜片可以期望提高电解池操作的发现。 隔膜的这种压缩使隔膜厚度从原始厚度减小，例如从刚刚沉积在阴极上的隔膜的原始厚度。 膜片的减小的厚度提供小于零间隙操作的电池操作。 通过将隔膜保持在压缩和减小的厚度下，电池以更窄的电极间间隙运行，并因此以期望的电池电压降低。
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