由硫酸铵和氯化钾制备硫酸钾溶剂法工艺及其相图研究 摘要 本文对硫酸铵和氯化钾制备硫酸钾溶剂法工艺及其相图进行了研究。考察了十种有机溶剂对反应过程氧化钾收率的影响,结果表明以甲醇为添加溶荆较为适宜;研究确定了拟四元交互体系K+、NH.+/,ICl一、S042一的恒温溶解度图作为溶剂法工艺的理论基础;运用单因素分析法考察了影响反应过程氧化钾收率的主要因素,并用正交试验设计法确定了反应的适宜工艺条件:,反应时间 %, 硫酸铵初始浓度20%.,反应温度 25℃ 氧化钾收率大于90%: 甲醇经两段蒸发回收后循环使用;。 关键词:硫酸钾,、溶剂法、硫-酸铵、氯化钾、氯化铵 √ √ ZY √ √ Study OR The Solvent Progress of Preparing Potassium Sulfate by Ammonium Sulfate and Potassium Chloride and Its Phase Graph ABSTRACT A study is done in this work on the progress conditions of potassium chloride and ammonium sulfate reacting anic solvents、the isothermal phase graphs of the reacting system:anic solvents are experimented and methanol of them is seIected out as the best solvent;The phase graphs are studied and protracted On the conditions which are the temperature(25℃)and methanol concentration(50%) of the reacting system K+、NH4+//CI一、SOl’,whi ch is theoretical basis to the solvent progress;The factors which impact on the receiving ratiO of potassium oxide are determined in the reacting by single-factor prope r conditions of this producing process are confi rmed by the orthogonal experiments: the reacting time 80min。methanol concentration:50%,the initiatory concentration of ammonium sulfate 20%,the reacting materials eonfecting ratio:,the reacting temperature 25℃;MethaneI is recycled by distiI]ation in tWO sector and is quality of potassium sulfate reaches to the fi rst rank in agricultural potassium sulfate and the quality of ammonium chloride reaches to eligibl e in industrial ammonium chloride. Key Words:potassium sulfate、solvent progress、ammonium sulfate、 potassium chloride、ammonium chloride 独创性声明 本人声明所呈交的学位论文是本人在导师指导下进行的研究工作及取得的研究成果。,论文中不包含其他人已经发表或撰写过的研究成果,也不包含为获得佥匿王些本堂或其他教育机构的学位或证书面使用过的材料。与我一同工作的同志对本研究所傲的任何贡献均已在论文中作了明确的说明并表示谢意。 学位论文作者签名: 签字日期: 年月 日 学位论文版权使用授权书 本
