|
Abstract The processes of antipyrine recovery from antipyrine mother liquor after crude oil crystallization includ concentration, decolorization, cooling crystallization, recrystallization, purification, centrifugation and drying.The method could not only make full use of the mother liquor after crystallization, but also ensure the quality of analgin,and was simple,had high recovery rate and high purity of antipyrine product.
|
