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发明授权
CN105858685B 一种烟气脱硫副产硫酸铵的深度除砷方法 有权

一种烟气脱硫副产硫酸铵的深度除砷方法
摘要：
本发明涉及一种烟气脱硫副产硫酸铵的深度除砷方法，属于环境工程技术领域。本发明设计出一种烟气脱硫副产硫酸铵的深度除砷工艺，并针对性开发出烟气脱硫副产硫酸铵的深度除砷系统，采用FeSO4‑Na2S联合工艺，配合精密过滤器进行多级过滤，对硫铵母液进行深度除砷，砷去除率达95%以上，并最终产出的硫酸铵含砷≤0.00005%、氮含量≥21%，其余杂质含量远高于《硫酸铵》国家标准第1号修改单GB 535‑1995/XG1‑2003的要求，同时，本发明工艺中药剂易购、工艺简单、操作方便。
摘要（英）：

The invention relates to a method for deep arsenic removal of flue gas desulfurization byproduct ammonium sulfate, and belongs to the technical field of environment engineering. According to the invention, a process for deep arsenic removal of flue gas desulfurization byproduct ammonium sulfate is designed, a system for deep arsenic removal of flue gas desulfurization byproduct ammonium sulfate is specially developed, a FeSO4-Na2S combined process is adopted, multistage filtration is performed by matching with a precision filter, deep arsenic removal is performed on ammonium sulfate mother liquor, the arsenic removal rate reaches 95% or higher, the finally produced ammonium sulfate contains less than or equal to 0.00005% of arsenic and more than or equal to 21% of nitrogen, and the content of other impurities is far higher than the requirement in No.1 amended list GB 535-1995/XG1-2003 of the national standard of ''Ammonia Sulfate''. Meanwhile, the agents are easy to purchase, the process is simple, and the operation is convenient in the method provided by the invention.

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