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硫酸钾是一种重要的农用化学钾肥。尤为众多的忌氯经济作物如烟草、茶、桑、柑桔、葡萄等所必需营养元素。我国历来依靠进口供应(1992年进口57万吨),而且价格昂贵,故硫酸钾生产国产化极待尽早解决。吴县复合肥厂引进上海化工研究院小试成果,采用硫酸铵与氯化钾复分解新工艺流程,并于1993年2月建成3000t/a 中试装置,经过半年的试产,表明该项工艺具有投资少、工艺流程先进、设备选型合理、无三废污染排放、能耗低以及副产品可供利用等
Potassium sulfate is an important agrochemical potash fertilizer. In particular, many of the necessary nutrient elements such as tobacco, tea, mulberry, citrus, grapes, etc., are not commercially available in the chlorine-tolerant crops. China has historically relied on imported supplies (imported 570,000 tons in 1992), and the price is high, so the domestic production of potassium sulfate is extremely urgent to be resolved as soon as possible. The Wu County Compound Fertilizer Plant introduced the results of a small test by the Shanghai Research Institute of Chemical Industry, and adopted a new process of ammonium sulfate and potassium chloride double decomposition. In February 1993, a 3000 t/a pilot plant was built. After six months of trial production, it showed that the process had Low investment, advanced technological process, rational equipment selection, no pollution discharge, low energy consumption, and by-products available for use