Patent ID: 6979362
Filing Date: 2005-12-27
Classification: C01B,F25J

Abstract:
1. Carbon dioxide purification apparatus comprising: a vertically oriented cylindrical high-pressure equalization tank having an inlet; a vertically oriented cylindrical expander-concentrator tube disposed within the equalization tank, the expander-concentrator tube including upper and lower end sections having heat-exchanging surfaces interconnected with an enlarged expansion tube; a three way valve, a first connection pipe for fluidly connecting the bottom of the high-pressure equalization tank with the three way valve and a second connection pipe for fluidly connecting the lower end of the expander concentrator tube with the three way valve, a heat exchanger having an inlet side and an outlet side, a first vapor transfer pipe fluidly connecting the upper end of the expander-concentrator tube to the inlet side of the heat exchanger; a filter interposed in the first vapor transfer pipe between the expander-contractor tube and the heat exchanger; a compressor pump interposed in the first vapor transfer pipe between the filter and the heat exchanger; a condenser pipe fluidly connecting the outlet of the heat exchanger with the equalization tank; a second vapor transfer pipe for fluidly connecting the equalization tank to the inlet side of the heat exchanger.