Patent ID: 6517686
Filing Date: 2003-02-11
Classification: C01B,C01C

Abstract:
An apparatus for purifying a liquid-phase mixture including a compound and at least one impurity, comprising:a first container for holding said liquid-phase mixture; a second container for holding purified compound; a first fluid line in fluid communication with said first container and with said second container for transferring gas-phase compound from said first container to said second container; a vacuum source in fluid communication with said first fluid line; a scrubber in fluid communication with said first fluid line; a temperature controller for maintaining a temperature differential between said first container and said second container, said temperature controller maintaining the compound in gas phase when said compound is transferred from said first container to said second container, and liquefying said compound when said compound is in said second container; and a heater in heat transfer communication with said first fluid line, wherein when gas-phase compound is being transferred through said first fluid line, said heater maintains said compound in gas phase until said gas-phase compound has entered said second container; whereby when said gas-phase compound is transferred from said first container to said second container, said at least one impurity is not transferred from said first container to said second container.