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密相半干法低温同时脱硫脱硝影响因素

Keywords: 钙基吸收剂,含氧量,含湿量,氮硫比,胶凝反应

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Abstract:

针对90~160℃的低温条件下,SO2对钙基吸收剂吸收NOx的影响进行了实验研究,分析了烟气温度T、含氧率、含湿量等对SO2促进钙基吸收剂吸收NOx的影响。实验结果表明,当烟气中SO2浓度的升高可促进钙基吸收剂对NOx的吸收;同时,维持反应系统在9.2%的含湿量;保证烟气温度在结露点以上,使系统在90~100℃的温度区间;控制系统漏风率,防止含氧率的升高;保证前端电除尘效率的同时,将一部分电除尘捕集到的灰尘作为钙基脱硫剂的添加剂,并使之参与脱硫反应器内的钙基吸收剂循环过程中;可较多地脱除烟气中的污染物质。

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