Concentration device and process for multi-quality hydrogen peroxide and application of device

The invention belongs to the technical field of hydrogen peroxide concentration, and in particular relates to a concentration device and process for multi-quality hydrogen peroxide and an applicationof the device. The device structurally comprises a first falling film evaporator and a second falling film evaporator, the first falling film evaporator and the second falling film evaporator are respectively installed on two sides of a rectification tower, and the first falling film evaporator and the second falling film evaporator are respectively equipped with three-stage liquid distribution equipment composed of a two-stage distributor and spray heads, wherein each two-stage distributor comprises a uniform distribution disk and a uniform distribution tank, the bottom surface of each uniform distribution tank is provided with liquid outlet holes, each uniform distribution disk is arranged below a liquid inlet pipe on the top of each falling film evaporator, and each uniform distributiontank is arranged below on