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发明公开
CN105294704A 一种氨法氢氧化镁工艺中副产物氯化铵再利用的方法 无效 - 驳回

一种氨法氢氧化镁工艺中副产物氯化铵再利用的方法
摘要：
本发明公开了一种氨法氢氧化镁工艺中副产物氯化铵再利用的方法，包括下列步骤：(S1100)收集步骤：收集由氯化镁溶液和液氨反应生成的副产物氯化铵；(S1200)蒸氨步骤：将氧化钙和步骤(S1100)收集得到的所述氯化铵通过蒸氨工艺制得氨气；(S1300)缩合反应步骤：将步骤(S1200)制得的所述氨气与甲醛反应形成反应液；(S1400)提浓步骤：蒸发所述反应液，以形成高浓度的反应液；(S1500)除湿步骤：干燥所述高浓度的反应液，得到乌洛托品成品。本发明提供的氨法氢氧化镁工艺中副产物氯化铵再利用的方法至少能够有效回收并利用氨法氢氧化镁工艺中副产物氯化铵。
摘要（英）：

The invention discloses a reutilization method of a by-product ammonium chloride from ammonia process to produce magnesium hydroxide. The comprises the following steps: (S1100) collecting by-product ammonium chloride generated from reaction of magnesium chloride and liquid ammonia; (S1200) ammonia distillation: preparing ammonia from calcium oxide and the ammonium chloride collected in (S1100) through an ammonia evaporation process; (S1300) condensation reaction: reacting ammonia obtained in the (S1200) and formaldehyde to prepare a a reaction solution; (S1400) concentration: evaporating the reaction liquid to form a reaction solution of high concentration; and (S1500) dehumidification: drying the reaction solution of high concentration to obtain a urotropine finished product. The reutilization method of by-product ammonium chloride from ammonia process to produce magnesium hydroxide at least can effectively recycle and use the by-product ammonium chloride from ammonia process to produce magnesium hydroxide.

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