β-甲基萘醌废液制备氧化铬绿工艺研究

发布时间：2018-02-03 07:02

  本文关键词： β-甲基萘醌 三氧化二铬 葡萄糖　出处：《无机盐工业》2017年12期 　论文类型：期刊论文

【摘要】：β-甲基萘醌生产过程产生大量含铬废液,传统方法是将其制成铬粉,但由于铬粉市场疲软因而限制了该方法的生产,同时影响了β-甲基萘醌的生产。研究了β-甲基萘醌废液制备氧化铬绿的工艺,主要包括还原、除酸、洗涤、煅烧等工序,对比了还原剂加入量、除酸量、洗涤次数对产品质量及成本的影响。结果表明:β-甲基萘醌废液与葡萄糖在110℃反应,用氧化钙除酸至p H=3,所得氢氧化铬经7次洗涤再经煅烧,制得的氧化铬绿产品三氧化二铬质量分数99%,其余各项指标均符合GB/T 20785—2006《氧化铬绿颜料》的要求。
[Abstract]:A large amount of chromium-containing waste liquid is produced during the production of 尾 -methylnaphthoquinone. The traditional method is to make chromium powder, but the market of chromium powder is weak, which limits the production of this method. At the same time, the production of 尾 -methylnaphthoquinone was affected. The process of preparing chromium oxide green from 尾 -methylnaphthoquinone waste liquid was studied, including reduction, acid removal, washing, calcining and so on. The amount of reducing agent and acid removal were compared. The effect of washing times on product quality and cost. The results showed that 尾 -methylnaphthoquinone waste liquor reacted with glucose at 110 鈩，

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