Control method of hydrogen peroxide concentration cascade system

The invention provides a control method of a hydrogen peroxide concentration cascade system, which comprises the following steps: under the condition that a concentration system is about to run, controlling a heat supply pipeline to run and controlling a heat supply device not to run; after the heat supply pipeline operates for a preset duration, the working states of a return valve, an inlet pressure control valve and a steam flow control valve of the compressor are selectively adjusted; obtaining the operation pressure of a rectification device, the temperature of hydrogen peroxide in a first channel and the evaporation pressure of a first heat exchange medium in a second heat exchanger; and according to the operation pressure, the hydrogen peroxide temperature and the evaporation pressure of the first heat exchange medium, the starting time of the compressor is determined. According to the method, a heat source is provided for replacing most steam, electric energy is used for replacing steam, the operation