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一、前言随着工业和科学技术的发展,给碘开辟了广阔的新市场。譬如:用作饮水消毒剂,以避免用氯气消毒生成致癌物质的危险①;在煤液化工艺和热分解反应从水中制氢工艺上用作催化剂等等①。因而国际上对碘的需求量急剧地增加。在国内由于制碘工艺水平低,资源匮泛其产量远跟不上国内的需要。所以合理使用资源,改造现有工艺来提高碘的收率是制碘工业当务之急。提高收率的关键之一是控制氯水或氯气的用量,防止氧化不足
I. Introduction With the development of industry and science and technology, iodine has opened up a vast new market. For example: as a drinking water disinfectant to avoid the risk of carcinogenic substances with chlorine disinfection ①; in the coal liquefaction process and the thermal decomposition of hydrogen from the water process used as a catalyst, etc. ①. As a result, the international demand for iodine has dramatically increased. Due to the low level of iodine process in the country, the output of its scarce resources far can not keep up with the domestic needs. Therefore, the rational use of resources, the transformation of existing processes to increase the yield of iodine is a priority for iodine industry. One of the keys to improving yields is to control the amount of chlorine or chlorine to prevent under-oxidation