【摘要】 简要评述了氯化氢(氯气)保护气氛下脱水、氯气(氯化氢)熔融氯化脱水、合成钾(铵)光卤石脱水等几种传统脱水工艺,重点介绍了水氯镁石溶剂络合脱水的工艺研究进展。同传统工艺比较,溶剂络合脱水具有可实现低温脱水、较高的脱水效率及良好的工作环境等优点。同时指出了溶剂脱水工艺以后的研究重点应放在研究具有最优脱水效果的有机溶剂,进一步弄清楚溶剂脱水的机理,以及在保证脱水率高、脱水产物中MgO含量和炭含量低的前提下怎样缩短溶剂脱水流程、提高有机物及氨的回收率等方面。更多还原

【Abstract】 Several traditional bischofite dehydration technologies,including HC1 or Cl₂ atmosphere protection dehydration,synthetic carnallite （KC1 · MgCl₂· 6H₂O） or ammonium carnallite （NH₄Cl · MgCl₂ · 6H₂O） dehydration, and molten chloridizing dehydration are briefly reviewed. The study progress of the solvent complexation dehydration technology is emphatically introduced. Compared with the traditional dehydration technologies, solvent complexation dehydration technology possesses much more advantages due to the fact that it can be operated at lower temperature, with higher dehydration efficiency and better operation surrounding. Key points of future research in the solvent complexation dehydration are also pointed out. The future research work will be focused on researching high-efficiency dehydration solvent,further understanding the mechanism of solvent complexation dehydration,and shortening the technological process and improving the recovery rate of solvent and ammonia under maintaining the high dehydration efficiency and the lower magnesium oxide and carbon content in the dehydration product.更多还原