一、前言钛及其合金的比重小,比强度大,耐蚀性优异,尽管目前价格还较昂贵,但仍适宜于制造化工设备。钛材几乎完全耐各种类型氯化物、含氯介质、有机酸,以及含重金属离子的盐酸或硫酸腐蚀。为氯碱工业的几次重大设备改造,起到了关键性的作用。例如食盐电解槽石墨阳极改为钛涂钌阳极后,取得了显著的节电效果。在湿氯干燥系统中使用了钛制冷凝器,使得由直接喷淋干燥的老工艺改进为 I. INTRODUCTION The small proportion of titanium and its alloys, its specific strength and its excellent corrosion resistance are still suitable for the manufacture of chemical equipment, although the current prices are still relatively expensive. Titanium is almost completely resistant to all types of chlorides, chlorinated media, organic acids, and hydrochloric or sulfuric acid containing heavy metal ions. Chlor-alkali industry for several major equipment transformation, played a key role. For example, salt electrolyzer graphite anode to titanium coated ruthenium anode, achieved significant energy-saving effect. A titanium condenser was used in a wet chlorine drying system so that the old process by direct spray drying was improved to