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Title: Method for verification of constituents of a process stream just as they go through an inlet of a reaction vessel

A method for validating a process stream for the presence or absence of a substance of interest such as a chemical warfare agent; that is, for verifying that a chemical warfare agent is present in an input line for feeding the agent into a reaction vessel for destruction, or, in a facility for producing commercial chemical products, that a constituent of the chemical warfare agent has not been substituted for the proper chemical compound. The method includes the steps of transmitting light through a sensor positioned in the feed line just before the chemical constituent in the input line enters the reaction vessel, measuring an optical spectrum of the chemical constituent from the light beam transmitted through it, and comparing the measured spectrum to a reference spectrum of the chemical agent and preferably also reference spectra of surrogates. A signal is given if the chemical agent is not entering a reaction vessel for destruction, or if a constituent of a chemical agent is added to a feed line in substitution of the proper chemical compound.
 [1];  [2];  [3]
  1. (North Augusta, SC)
  2. (Aiken, SC)
  3. (Martinez, GA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) SRS
Patent Number(s):
US 5412465
Contract Number:
Research Org:
Country of Publication:
United States
method; verification; constituents; process; stream; inlet; reaction; vessel; validating; presence; absence; substance; chemical; warfare; agent; verifying; input; line; feeding; destruction; facility; producing; commercial; products; constituent; substituted; proper; compound; steps; transmitting; light; sensor; positioned; feed; enters; measuring; optical; spectrum; beam; transmitted; comparing; measured; reference; preferably; spectra; surrogates; signal; entering; added; substitution; input line; feed line; chemical agent; transmitting light; process stream; light beam; reaction vessel; sensor positioned; warfare agent; beam transmitted; optical spectrum; chemical warfare; chemical compound; chemical products; chemical product; producing commercial; /356/110/702/