Method for analyzing impurities in a gas stream
AssigneePraxair Technology, Inc.
InventorMark Leonard Malczewski
Life of this patent
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Abstract
A method of analyzing a sample gas for the presence of at least one gas impurity by combining a stream of sample gas with a stream of carrier gas to provide a combined stream of gas, directing the combined stream of gas through a column which preferentially removes the sample gas from the combined stream to produce a retentate stream of gas, and analyzing the retentate stream of gas for the presence of the at least one gas impurity.
Claims27
A method of analyzing a sample gas for the presence of at least one gas impurity in the sample gas, the method comprising the steps of:
- (a) combining a stream of a sample gas with a stream of a carrier gas to generate a combined stream of gas;
- (b) directing the combined stream of gas through a column which preferentially removes the sample gas from the combined stream to produce a retentate stream of gas;
- and
- (c) analyzing the retentate stream of gas by emission spectroscopy for the presence of at least one gas impurity.
A method of analyzing a sample gas for the presence of at least one gas impurity in the sample gas, the method comprising the steps of:
- (a) directing a stream of carrier gas through a column;
- (b) directing a stream of sample gas to the column which allows selective permeation of the at least one gas impurity from the stream of sample gas into the stream of carrier gas to produce a permeate stream of gas;
- and
- (c) analyzing the permeate stream of gas by emission spectroscopy for the presence of the at least one gas impurity.
Dependencies are inferred from the claim text.