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1. 发明授权

US08088266B2 Electrodialysis method for purifying of silicate-containing potassium hydroxide etching solution 有权
标题翻译：用于纯化含硅酸盐的氢氧化钾蚀刻溶液的电渗析方法
公开(公告)号：US08088266B2
公开(公告)日：2012-01-03
申请号：US12389676
申请日：2009-02-20
申请人： Curtis Douglas Dove , Goang Cheng Chang , Wei-Liang Yang
发明人： Curtis Douglas Dove , Goang Cheng Chang , Wei-Liang Yang
IPC分类号： B01D61/44
CPC分类号： B01D61/422 , B01D61/46 , C02F1/4693 , C02F2103/346
摘要： An electrodialysis method for the treatment of silicate-containing potassium hydroxide etching waste solution is provided. The method comprises: providing a reaction tank including a cathode, an anode, and two cation dialysis membranes, wherein the reaction tank is divided by the cation dialysis membranes into a cathode chamber, an anode chamber and a waste solution disposing chamber located therebetween; filling a sulfuric acid solution into the anode chamber; filling a potassium hydroxide solution into the cathode chamber; introducing a silicate-containing potassium hydroxide etching waste solution into the waste solution disposing chamber; and applying a voltage and a current density to each of the chambers to render potassium ions to transport from the waste solution chamber through the cation dialysis membrane to the cathode chamber.
摘要翻译：提供了一种用于处理含硅酸盐的氢氧化钾蚀刻废液的电渗析方法。该方法包括：提供包括阴极，阳极和两个阳离子透析膜的反应槽，其中反应槽被阳离子透析膜分成阴极室，阳极室和位于其间的废溶液处理室; 将硫酸溶液填充到阳极室中; 将氢氧化钾溶液填充到阴极室中; 将含硅酸盐的氢氧化钾蚀刻废液引入废液处理室; 以及向每个室施加电压和电流密度以使钾离子从废溶液室通过阳离子透析膜输送到阴极室。

2. 发明授权

US08721918B2 Method for purifying fluoride etching solution by using hydroxide compound and ion exchange resin absorption 有权
标题翻译：通过使用氢氧化物化合物和离子交换树脂吸收来净化氟化物蚀刻溶液的方法
公开(公告)号：US08721918B2
公开(公告)日：2014-05-13
申请号：US13102549
申请日：2011-05-06
申请人： Curtis Douglas Dove , Kehchyn Ho
发明人： Curtis Douglas Dove , Kehchyn Ho
IPC分类号： C09K13/00
CPC分类号： C09K13/00
摘要： A method for purifying fluoride etching solution is provided. The method begins with a reaction by hydroxide gas or solution to achieve a balance pH condition for the fluoride etching solution. Subsequently, the treated etching solution can be fed by constant velocity pump to a basic anion exchange resin column(s). The basic anion exchange resins remove various contaminants resulting in a saleable product to a wide range of industrial applications. The final solution is collected in a finished product storage tank. The degree of purification by basic anion exchange resin can be verified, if needed at all, thereby making ammonium fluoride (AF), ammonium bifluoride (ABF), anhydrous hydrogen fluoride (AHF) and fluoride mixture to meet the application of industries or different market's application. Further, the ion exchange resins can be regenerated as needed to extend the useful life and system capacity.
摘要翻译：提供氟化物蚀刻液的净化方法。该方法开始于通过氢氧化物气体或溶液的反应以实现氟化物蚀刻溶液的平衡pH条件。随后，经处理的蚀刻溶液可以通过恒速泵送入碱性阴离子交换树脂柱。碱性阴离子交换树脂除去各种污染物，导致可广泛应用的产品。最终的溶液被收集在成品储罐中。如果需要，可以验证碱性阴离子交换树脂的纯化度，从而使氟化铵（AF），氟化铵（ABF），无水氟化氢（AHF）和氟化物混合物满足工业或不同市场的应用应用。此外，离子交换树脂可以根据需要再生，以延长使用寿命和系统容量。

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