Method for chemically plating metal catalyst on inner wall of tube pass of continuous flow reaction module

The invention discloses a method for chemically plating a metal catalyst on the inner wall of a tube pass of a continuous flow reaction module, which comprises the following steps: introducing a plating solution into the tube pass of the continuous flow reaction module by using a metering pump, heating to 75-95 DEG C, setting the flow of the metering pump, cooling the plating solution flowing outof the tube pass of the continuous flow reaction module, carrying out circulating chemical plating, closing the metering pump so that compressed air is introduced into the tube pass of the continuousflow reaction module to empty the liquid, keeping the temperature at 75-95 DEG C for 5-10 minutes, stopping introducing of the compressed air, cooling the continuous flow reaction module 1, introducing an ethanol aqueous solution for cleaning, emptying by using the compressed air, and cooling to room temperature, so that a chemical plating metal catalyst is tightly attached to the inner wall of the tube pass of the continu