The present invention relates to the technical field of sterilization, and provides a steam-assisted preheating shell-and-tube heat exchange sterilization
system and a sterilization control method. A first auxiliary preheating
pipe section is added to the feed pipeline between the first preheating
pipe section and the
homogenizer, and the first steam preheating module is used to perform heat exchange on the first auxiliary preheating
pipe section and the first preheating pipe section, so as to stabilize the preheating temperature of the material, especially stabilize the preheating temperature of the material entering the
homogenizer in the low-temperature sterilization mode, so as to meet the homogenization temperature requirement during low-temperature sterilization, thereby facilitating the improvement of the homogenization effect, and further improving the sterilization effect of the material; during high-temperature sterilization, since the
water temperature in the liquid pipeline can meet the heat exchange requirement of the first heat exchange preheating pipe section, the steam supply to the first steam
heat exchanger can be stopped, so that the water flowing out from the second heat exchange sterilization pipe section after heat exchange enters the heat exchange circulation pipeline of the first heat exchange preheating pipe section for preheating to meet the homogenization temperature requirement, thereby meeting different sterilization temperature requirements.