The stainless steel annealing and pickling process can product large quantity of waste mixed acid(HF/HNO3) that must be treated through acid purification system.
不锈钢生产退火酸洗过程会产生大量废混酸（HF/HNO3），通过酸净化系统对废酸进行处理。
Proposed is a process for purification of yellow humic acid by heterophase cation-exchange membrane. After electrophoresis, its purity was up to 95% and recovery, 88.47%.
研究了一种新的黄腐酸提纯工艺方法，采用异相离子交换膜进行黄腐酸的电渗析提纯，黄腐酸经电渗析后的纯度可达95% ，收率为88.47% ；
The working process of resin bed and working principle of acid purification unit and flowchart are described particularly. Making comparison of acid consumption of using it before and after.
详细介绍了树脂床工作过程和酸净化装置的工作原理及工艺流程，对酸净化装置投入前后的酸耗量做了对比。
This paper deals with the treatment of arsenic_containing waste water in the purification section of sulfuric acid unit, and its process and mechanism are also introduced.
对硫酸生产中净化工序废水进行处理，根据其含砷量多少，介绍其处理方法、工艺流程及机理，经处理后的污水均可达到国家排放标准。
The article deals with the BESA phosphoric acid process by wet purification.
着重介绍了BESA湿法磷酸的净化工艺。
A standing and layering process for the regenerated acid purification is described. The treating agent ANPA is added in regenerated acid and stood after agitation to purify it through layering.
介绍了净化再生酸的静置分层法，将处理剂anpa加入再生酸中，搅拌后静置，使再生酸分层分离而得到净化。
Three-tower continuous distillation process of ethyl acetate from aldehyde condensation and purification by gas-phase oxidation of acetic acid and ethylene were also discussed.
加恒沸剂共沸蒸馏和乙酸萃取反应精馏过程。乙醛缩合法生产乙酸乙酯的三塔连续精馏过程以及乙烯与乙酸气相催化反应的加水精制工艺过程。
The present invention has the advantages of simple process and saving in alcohol and precipitant, and may be applied in refining and purification of hyaluronic acid.
本发明用于分离透明质酸外，也可用于透明质酸的精制和纯化过程。
A purification process of wet-process phosphoric acid, which is used for the production of toothpaste-grade calcium hydrogen phosphate, was studied.
以湿法磷酸为原料制取牙膏级磷酸氢钙的关键在于解决湿法磷酸的净化与脱氟问题。
Six, in phosphoric acid purification, help wet-process phosphoric acid process gypsum separation. 7, used for water in rivers of water works water treatment flocculant.
在磷酸提纯中，有助于湿法磷酸工艺中石膏的分离。7、用于以江河水源的自来水厂的水处理絮凝剂。
This paper deals with using emulsion liquid membrane technique to remove magnesium which is a new technique for wet-process phosphoric acid purification.
采用乳化液膜技术对湿法磷酸进行脱镁净化是一种净化湿法磷酸的新途径。
Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.
为对湿法磷酸进行净化脱氟 ，用胺类溶剂作萃取剂 ，煤油作稀释剂 ，对湿法磷酸进行了溶剂萃取脱氟的工艺研究。
Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.
为对湿法磷酸进行净化脱氟 ，用胺类溶剂作萃取剂 ，煤油作稀释剂 ，对湿法磷酸进行了溶剂萃取脱氟的工艺研究。
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