Gas monitoring system and method
First Claim
Patent Images
1. A monitored gas system, comprising:
- a source gas;
a gas sensor constructed and arranged to monitor the source gas for detection of phosgene and/or chlorine dioxide therein; and
a filter for removal of hydrogen sulfide and/or chlorine 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.
8 Assignments
0 Petitions
Accused Products
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.
17 Citations
25 Claims
-
1. A monitored gas system, comprising:
-
a source gas;
a gas sensor constructed and arranged to monitor the source gas for detection of phosgene and/or chlorine dioxide therein; and
a filter for removal of hydrogen sulfide and/or chlorine 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. 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 hydrogen sulfide and/or chlorine from the source gas prior to its exposure to the gas sensor, said filter comprising a support impregnated with Ag2O.
-
-
14. A method of monitoring a source gas for phosgene and/or chlorine dioxide therein, comprising:
-
filtering the source gas to remove hydrogen sulfide and/or chlorine 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 phosgene and/or chlorine dioxide therein;
wherein when said source gas contains chlorine dioxide, chlorine is present in said source gas prior to filtering thereof. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
Specification