二季戊四醇和季戊四醇分离结晶动力学研究

Study on Crystallization Kinetics for Separating Dipentaerythritol and Pentaerythritol

从结晶粒径与晶核数密度关系,晶体生长速率与成核速率关系着手,研究了二季戊四醇和季戊四醇的结晶动力学特性。通过对两种不同物质结晶特征的分析,成功地从季戊四醇废渣中结晶分离二季戊四醇,一次结晶纯度达到90%以上。

crystallization kinetics was studied for dipentaerythritol and pentaerythritol by analyzing the nexus of crystal size and crystal population density and the nexus of crystal growth rate and nucleation rate.The dipentaerythritol crystal of more than 90% in purity from pentaerythtitol waste residue can be achieved by analyzing the different crystal characteristic of two materials.