Thick pulp raw material sterilization system

The utility model discloses a thick pulp raw material sterilization system which comprises a sterilizer main machine, a pulp balance tank, a steam-water separator, a duplex filter, a delivery pump, a control cabinet, a valve block and a five-level expansion and silencing steam-water mixer, wherein the pulp balance tank is connected with a thick pulp raw material inlet pipe of the sterilizer main machine, and the steam-water separator is connected with the clean steam inlet end of the sterilizer; the duplex filter is arranged between the pulp balance tank and the sterilizer; the delivery pump is used for delivering the thick pulp raw material in the pulp balance tank into the sterilizer, and the control cabinet is used for controlling the start and stop of the delivery pump, the start and stop of signals of the whole system and the opening and closing of a pneumatic valve; one end of the valve block is connected with the hick pulp raw material outlet end of the sterilizer, and the other end of the valve block is connected with the material inlet end of the pulp balance tank; the five-level expansion and silencing steam-water mixer is connected with the pulp balance tank. The thick pulp raw material sterilization system has the advantages of simple structure, convenience in operation, high degree of automation and strong practicality, can carry out high temperature sterilization for thick pulp raw materials, and greatly reduces recognized intensity of labor. The sterilized sterilization system can be subjected to CIP cleaning.