Abstract:

Liquid-continuous impinging streams（LIS）have the excellent features of enhancing micromixing，strong pressure fluctuation and promoting process kinetics，which are extremely valuable for processes occurring on molecular scale. The authors investigated these features；and also studied the preparation of several“ultrafine”and nano materials experimentally by reaction-precipitation in LIS，and obtained products of smaller particles with narrower size distribution and controlled appearance. Several devices employing LIS for reaction and crystallization have been developed and applied，and the flow configuration，working principles and industrial application status of such devices are described.