Oxygen analyzer

Patent · Tue Jul 22 00:00:00 EDT 1986

OSTI ID:5333239

Benner, W H

An oxygen analyzer is described which consists of: a pyrolysis tube, a temperature programmed oven through which the pyrolysis tube extends, a pyrolysis oven into which the pyrolysis tube extends, a quantity of granular carbon located in a portion of the pyrolysis tube within the pyrolysis oven and adapted to be heated to a temperature of about 1135/sup 0/C by the pyrolysis oven, means for moving a sample of material to be analyzed through the pyrolysis tube so as to position a sample of material to be analyzed in either the temperature programmed oven or the pyrolysis oven, a computer operatively connected to the temperature programmed oven for increasing the temperature of the oven as a function of time, detector means operatively connected to the pyrolysis oven to receive gaseous material from the oven, the computer also being operatively connected to the detector means so as to receive input signals from the detector means relative to measurement of gaseous material directed through the detector means, and means for backflushing the pyrolysis tube with nitrogen gas, whereby, a sample of oxygen containing material is decomposed and converted to carbon monoxide within at least one of the ovens for subsequent detection such that microgram quantities of oxygen in a sample being analyzed can be determined.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4601882
• OSTI ID: 5333239
• Resource Relation: Patent File Date: Filed date 8 May 1984
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
47 OTHER INSTRUMENTATION
OXYGEN
CHEMICAL ANALYSIS
OXYGEN METERS
DESIGN
OPERATION
CARBON
CARBON MONOXIDE
CHEMICAL REACTORS
COMPUTERIZED CONTROL SYSTEMS
GRANULAR MATERIALS
HEATING
NITROGEN
PYROLYSIS
SIGNALS
TEMPERATURE CONTROL
VERY HIGH TEMPERATURE
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
CONTROL SYSTEMS
DECOMPOSITION
ELEMENTS
MATERIALS
MEASURING INSTRUMENTS
METERS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
400201* - Chemical & Physicochemical Properties
440300 - Miscellaneous Instruments- (-1989)