The targeting of ultrasonic equipment also needs to be further strengthened; the cavitation and thermal effects of ultrasound also promote a series of abnormal side reactions, and how to reduce the occurrence of side reactions is one of the difficulties in research; although ultrasound is in petrochemical industry Important achievements have been made in the field, but the realization of industrialized production still lacks certain theoretical basis and scale-up experimental research. Therefore, in-depth study of the operation process of ultrasonic experiments, optimization of experimental parameters, and the development of scale-up experiments are currently difficult problems to be solved and future research One of the key points.