摘要
磷的加工方式有湿法和热法2种。湿法磷加工使用硫酸分解磷矿来制备磷酸及其下游产品,该过程可产生磷石膏、氟硅酸等废弃物,对环境影响极大。热法磷加工使用电炉还原法将磷矿转化为黄磷,并使用黄磷来制备热法磷酸及其他一些下游产品,该过程消耗大量的电能,并会产生黄磷尾气、磷炉渣等废弃物,同样对环境产生极大影响。如何有效地回收利用湿法和热法磷加工过程中产生的废弃物、热能,降低加工过程的污染物排放和能耗,是实现磷化工产业可持续性发展的关键。通过对湿、热法磷加工的工艺特点和产业链的分析和研究,提出了通过湿法、热法磷加工体系的共生耦合的方式来实现废弃物、热能的有效回收利用的新思路,以期促进磷化工产业实现可持续性发展。
There are mainly two approaches for phosphorus processing ：wet method and thermal method.The sulfuric acid is used to decompose phosphate rock to produce phosphoric acid and downstream products in wet phosphorus processing system.The phosphogypsum,fluosilicic acid and other wastes are produced at the same time ,which have a great impact on the environment.The phosphate rock is converted to yellow phosphorus by electric furnace reduction method in thermal phosphorus processing system.The yellow phosphorus is used to produce thermal phosphoric acid and other downstream products.A lot of electricity is consumed and the yellow phosphorus tail gas, phosphorus slag and other wastes are produced at the same time,which also have a great impact on the environment.How to effectively recover the wastes and heat energy generated during the wet and thermal phosphorus processing and how to reduce the pollutant emissions and energy consumption in the processing is the key to achieve the sustainable development of the phosphorus chemical industry.Based on the study and analysis of technological characteristics and industrial chains of wet and thermal phosphorus processing systems,a new conception of achieving effective recovery and utilization of waste and heat energy and promoting the sustainable development of the phosphorus chemical industry through the symbiotic coupling of wet and thermal phosphorus processing systems was proposed.
作者
马航
冯霄
Ma Hang;Feng Xiao(School of Chemical Engineering ＆ Technology,Xi＇an Jiaotong University,Xi＇an 710049,China)
出处
《无机盐工业》
CAS
北大核心
2018年第11期1-6,共6页
Inorganic Chemicals Industry
基金
国家自然科学基金项目"反应-分离-传递网络递次联动机理与集成方法研究"(21736008)
关键词
磷资源
共生耦合
可持续发展
资源回收利用
热能回收
phosphorus resources
symbiotic coupling
sustainable development
resources recovery and utilization
heat energy recovery
