-
1.发明公开CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES 审中-公开化学方法用于生产盐酸和氯化钠免费混合硫酸钾肥料含或其他金属的硫酸盐
公开(公告)号：EP2188211A1
公开(公告)日：2010-05-26
申请号：EP08763571.0
申请日：2008-06-15
发明人： FINKELSHTEIN, Leonid
摘要： A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MClx) and oleum. MClx and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H2SO4, yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture. This method provides high-purity, low-chlorine sulfates, including the novel potassium sulfate double salts K3(NH4)(SO4)2, 3K2SO4*MgSO4 and 3K2SO4*CanMg2-nSO4.
搜索结果
1 条记录 (耗时 0.007 秒)
筛选
AND
AND
过滤
NOT
NOT
扫码加群
