摘要
将采用季铵盐相转移催化剂生产溴化氢时产生的废液中的氢溴酸分离出来,在制取湿法磷酸的基础上合成出磷酸氢钙。该工艺成本低,产品氟化物含量低,达到饲料级标准,符合HG2636-94标准。
Calcium hydrogen phosphate is synthesized by using hydrobromic acid separation from waste liquid generated in the production of bromine hydride via quaternary ammonium salt phase trans-catalyst, based on preparing phosphoric acid by wet process. The cost of this process is low and fluoride content in the product is small, reaching feed-grade level and meeting HG2636-94 standard.
出处
《精细与专用化学品》
CAS
2000年第23期22-23,共2页
Fine and Specialty Chemicals
