Abstract: Against the shortages of existing technologies for the recycling of yellow phosphorous tail gas, a novel continuous process was developed by combining the resources recycling of yellow phosphorous tail gas with formic acid production, which makes phosphoric acid acidification method as the core and can produce formic acid with high quality and low cost on the basis of considering the high and variable viscosity of system and the rationality of energy utilization. At the same time, a multilevel acidification reactor was also designed by integrating the reaction, heating and condensation reflux, which is divided into several reaction regions and equipped with different stirrers. The novel acidification reactor as the core equipment of novel process has the advantages of compact structure, energy conservation and wide adaptability.

Key words: yellow phosphorous tail gas, formic acid, continuous process, acidification reactor

摘要： 针对现有黄磷尾气回收利用技术的不足，开发了将黄磷尾气资源化回收与甲酸生产相结合的新型连续化工艺，该工艺以甲酸钠磷酸酸化法为核心，充分考虑了物系的高粘变粘特性和系统用能的合理性，能生产高品质低成本的甲酸产品。同时开发了多级酸化反应器，它采用反应、加热、冷凝回流于一体的集成式结构，分室操作且配置了与介质粘度相匹配的不同类型的搅拌器，具有结构紧凑、节能高效、适应面广的特点。

关键词: 黄磷尾气, 甲酸, 连续化工艺, 酸化反应器