无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2016, Vol. 48 ›› Issue (10): 47-.

• 论文 • 上一篇    下一篇

铬酸钠制备六水三氯化铬工艺研究

李先荣,陈 宁,董明甫,王方兵,黄玉西,袁小超   

  1. 四川省银河化学股份有限公司,四川绵阳 622656
  • 出版日期:2016-10-10 发布日期:2016-10-08

Research on preparation technology of chromium(Ⅲ) chloride hexahydrate by sodium chromate

LI  Xian-Rong, CHEN   Ning, DONG  Ming-Fu, WANG  Fang-Bing, HUANG  Yu-Xi, YUAN  Xiao-Chao   

  1. Sichuan Yinhe Chemical Co.,Ltd.,Mianyang 622656,China
  • Online:2016-10-10 Published:2016-10-08

摘要: 现有六水三氯化铬工业生产方法为铬酸酐还原法,生产成本高,且生产环境恶劣,工序流程长。采用铬酸钠经反应直接制备六水三氯化铬,研究考察了反应熟化时间、盐酸加入量、不同还原剂及还原剂加入量对反应效果的影响。结果表明:当熟化时间为4 h,还原剂为甲醇,盐酸加入量为理论用量的1.5倍时,制备出的六水三氯化铬质量可以达到行业优等品要求,且成本较铬酸酐法大幅降低。

关键词: 铬酸钠, CrCl3·, 6H2O, 甲醇

Abstract: The payable production process of CrCl3·6H2O is a reduction method with using chromic anhydride.It has many disadvantages,such as high cost,heavy pollution,and cockamamie process flow.The chromium(Ⅲ) chloride hexahydrate was prepared by sodium chromate directly.The influences of maturation time,quantity of hydrochloric acid,reductant,and its quantity on reaction effect were investigated.Results showed that when maturation time was 4 h,reductant was methanol,the quantity of hydrochloric acid was 1.5 times as great as theory quantity,the quality of chromium(Ⅲ) chloride hexahydrate could meet the quality requirement of professional premium grade of industry standard,and the cost can be decreased greatly amplitude as the cost of preparation by chromic anhydride.

Key words: sodium chromate;CrCl3·, 6H2O;methanol

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