一种利用镁基氧化物循环分解氯化铵制备盐酸和氨水的方法
Hydrochloric acid and ammonia are prepared by the cyclic reaction of magnesium-based oxides and ammonium chloride, which solves the problems of high energy consumption and low resource utilization in the treatment of high-concentration ammonium chloride wastewater, and realizes efficient and environmentally friendly resource recycling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU BAOTOU RARE EARTH TECH DEV CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for treating high-concentration ammonium chloride wastewater are energy-intensive, and using ammonium chloride as fertilizer can lead to soil compaction. Hydrochloric acid and ammonia water have low recycling rates, and the generated anhydrous calcium chloride is difficult to sell. Chemical precipitation methods have simple equipment but are costly and the products are difficult to sell.
Magnesium-based oxides are mixed with ammonium chloride and heated to produce ammonia and hydrogen chloride gas. Ammonia water and hydrochloric acid are then prepared by water absorption, and the magnesium-based oxides are recycled to improve reaction efficiency and product yield.
It achieves efficient decomposition of ammonium chloride to produce hydrochloric acid and ammonia for rare earth smelting, thereby improving resource utilization, reducing energy consumption and environmental pollution.