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一种基于高盐卤水脱硝制备元明粉的加工方法
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8Claims · 1 independent
§ Ⅰ
Dossier Overview
Inventor
宦魏; 季连强; 周正业; 单士全; 刘堂利
IPC Classification
C01D 5/00 (2006.01)C01D 5/16 (2006.01)C01B 32/324 (2017.01)C01B 32/348 (2017.01)
本发明公开了一种基于高盐卤水脱硝制备元明粉的加工方法,涉及元明粉制备技术领域,包括以下步骤:向高盐卤水中加入助滤剂,搅拌过滤,加入碳酸钠和氯化镁,调节pH值至11‑11.2,搅拌过滤,调节滤液pH至7‑7.2,用改性活性炭过滤,得到高盐卤水粗液;向高盐卤水粗液中加入阻垢剂,并用改性阴离子交换树脂进行吸附脱硝,收集滤液,得到低硝卤水;对低硝卤水进行蒸发浓缩,待硫酸钠质量浓度上升至80‑100g/L后,预冷并梯度降温,真空干燥,得到元明粉。
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