季戊四醇生产废液中甲酸钠回收工序的工艺改进

Technological Improvement on Sodium Formate Recovery From Waste Liquid of Pentaerythrite

介绍了从季戌四醇生产废液中回收甲酸钠的工艺改进：用温别法代替电渗析法分离甲酸钠，用沉降分离代替原设计的板框分离，用先回收甲酸钠工艺代替先回收季戊四醇工艺，并对新工艺路线进行工艺参数选优，经过改进使甲酸钠回收工序流程更简单合理，产品收率明显增加。

The article mainly introduces the tcchnological improvementon rccovcry of sodium formate from waste liquid of pcntaerythrite,including temperature-differcncc process replacing clectrodialysis.settling process replacing plate-and-frame, sodium formate recovcry first replacing pcntacrythritc first. In addition optimization is applied in this new tcchnological line. After the improvement thc process of sodium formate rccovery becomes easier and more reasonable. Therefore the rate of product recovcry increascs remarkably.