Gas monitoring system and method
OwnerElena Nikolskayainventor
Life of this patent
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Abstract
An apparatus and method for monitoring a source gas for detection of phosgene and/or chlorine dioxide therein, in which the source gas is filtered for removal of hydrogen sulfide and/or chlorine and/or hydrogen chloride prior to monitoring of the source gas by a gas sensor specific for phosgene or chlorine dioxide detection. The filter includes a support having Ag2O thereon, and when the source gas contains chlorine dioxide, chlorine also is present in the source gas prior to its filtration.
Claims25
A monitored gas system, comprising:
- a source gas;
- a gas sensor constructed and arranged to monitor the source gas for detection of at least one of phosgene and chlorine dioxide therein;
- and
- a filter for removal of at least one of hydrogen sulfide, chlorine and hydrogen chloride from the source gas prior to its monitoring by the gas sensor, said filter comprising a support having Ag2O thereon;
- wherein, when said source gas contains chlorine dioxide, chlorine is present in said source gas prior to filtration of said source gas by said filter.
A gas monitoring system for a source gas, comprising:
- a gas sensor constructed and arranged to detect phosgene in said source gas;
- and
- a filter for removal of at least one of hydrogen sulfide, chlorine and hydrogen chloride from the source gas prior to its exposure to the gas sensor, said filter comprising a support impregnated with Ag2O.
A method of monitoring a source gas for at least one of phosgene and chlorine dioxide therein, comprising:
- filtering the source gas to remove at least one of hydrogen sulfide, chlorine and hydrogen chloride therefrom and produce a filtered source gas, by contacting the source gas with a filter comprising a support having Ag2O thereon;
- and
- exposing the filtered source gas to a gas sensor constructed and arranged to detect at least one of phosgene and chlorine dioxide therein;
- wherein when said source gas contains chlorine dioxide, chlorine is present in said source gas prior to filtering thereof.
Dependencies are inferred from the claim text.