A test bench was built to study the dynamic characteristics of a binary ice vacuum system. The tests started with the same initial temperature and preset pressure but different jet flow. By collecting the indoor parameters of the flash such as temperature

pressure and so on

the influence of flow and solid adsorption module on the dynamic binary ice preparation process was analyzed qualitatively. The results showed that of the higher the flow rate

the lower the equilibrium pressure

while indoor balance temperature of the flash basically remained unchanged

maintaining at about 0℃. Through measuring the content of ice

it was found that the high flow rate was not favorable to the formation of ice crystals

while the low injection rate was relatively good for it. With adsorption it was more likely to achieve the dynamic balance and to maintain the balance at low pressure.