综述了以卤盐和硫酸盐废盐为原料制碱的工艺路线及进展,对比分析不同废盐制碱工艺的现状和潜在问题。卤盐制碱工艺相对成熟,但仍然存在能耗较高和流程复杂等不足;利用硫酸盐制碱为废盐制碱提供了一条新思路,可与碳利用相结合,使生产过程更经济、更清洁,促进双碳目标的实现。总结并展望以硫酸钠和CO₂为原料制碱的发展前景。

The process routes and progress for soda ash production using brine and spent sulfates as raw materials are reviewed,and the current situation and potential problems of different spent salts to soda ash production processes are compared and analyzed.The brine to soda ash production process is relatively mature,but there are still shortcomings such as high energy consumption and complex process.Using sulfates to produce soda ash provides a new idea for spent salts to soda ash,which can be combined with carbon dioxide utilization to make the production process more economical and cleaner,and promote the achievement of "carbon dioxide emission peaking and carbon neutrality" goal.The development prospects are proposed for soda ash production using sodium sulfate and CO₂ as raw materials.

曹俊雅(1981-),女,博士,副教授,研究方向为环境化工,通讯联系人,caojy@cumtb.edu.cn。