Chemical industry is a major power consumer in today's industrial enterprises. At present, my country is the largest developing country in the world. The degree of dependence on natural resources accounts for more than 60%. The energy problem is a serious challenge. There are two ways to fundamentally solve the energy problem. : First, open source, and second, energy saving. Frequency conversion energy-saving technology is a high-efficiency energy-saving new technology with wide application, quick effect and short payback period. Various industries have been widely used.