Patent ID: 6116260
Filing Date: 2000-09-12
Classification: B01J,C01B,Y10T

Abstract:
A liquid material supplying method for supplying a liquid material from a vessel to a vaporizer by feeding a pressure gas from a pressure gas supply to said vessel, using said liquid material supplying apparatus, said method comprising:a step of, when the liquid material in said vessel becomes smaller than a predetermined amount, stopping supply from said vessel,a step of changing the inside of said material line connection pipe, a portion of said discharge pipe, said gas line connection pipe, and a portion of said gas inlet pipe connected to said vessel into a reduced pressure state by said vacuum pump,a step of introducing the pressure gas into the inside of said material line connection pipe, the portion of said discharge pipe, said gas line connection pipe, and the portion of said gas inlet pipe connected to said vessel to change the inside into a pressurized state,a step for replacing said vessel with a new vessel filled with the liquid material, anda step of starting supply from said new vessel.