초록 ▼

An apparatus for sequentially pyrolyzing a plurality of samples held in sample tubes comprises a substantially vertical passage through which tubes carrying the samples may be passed; an upper gas-tight valve for closing off the upper end of the passage; a lower gas-tight valve for holding a sample

An apparatus for sequentially pyrolyzing a plurality of samples held in sample tubes comprises a substantially vertical passage through which tubes carrying the samples may be passed; an upper gas-tight valve for closing off the upper end of the passage; a lower gas-tight valve for holding a sample tube in the passage; a distribution valve directing purge gas and carrier gas to the top end of the passage and for passing pyrolyzed sample from the bottom of the passage to an analytical device; and an electrical heating element for heating the passage to temperatures at which a sample will be pyrolyzed.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for sequentially pyrolyzing a plurality of samples held in sample tubes for analysis in an analytical device comprising:means for defining a substantially vertical passage through which the tubes carrying the samples may be passed;an upper gas-tight valve for cl

[ What is claimed is:] [1.] Apparatus for sequentially pyrolyzing a plurality of samples held in sample tubes for analysis in an analytical device comprising:means for defining a substantially vertical passage through which the tubes carrying the samples may be passed;an upper gas-tight valve for closing off the upper end of the passage in a closed position and passing a sample tube in an open position;a lower gas-tight valve for holding the sample tube in the passage when in a closed position and for passing the sample tube in an open position;a distribution valve having inlets for receiving purge gas and carrier gas for, in alternate positions, directing purge gas and carrier gas to the top end of the passage and for passing pyrolyzed sample from the bottom of the passage to said analytical device;an electrical heating element for heating the passage to temperatures at which the sample in the sample tube positioned therein will be pyrolyzed; andmeans to control the upper, lower, and distribution valves and the heating element to sequentially move the sample tube into the vertical passage, pyrolyze the sample therein and eject the sample tube after pyrolysis has taken place.