Analyzers's home

Increasing regulatory pressure has produced great interest in monitoring for hydrogen chloride (HCl) and chlorine (Cl2) in stacks and from other sources. Measurement of these gases has important process control implications as well. Traditional spectroscopic methods have been used in these applications, but have not always been found to be satisfactory. This paper describes the use of IMS in performing these measurements. This technique is shown to have distinct advantages over competing techniques. Both compounds can be measured in a single instrument, limits of detection are in the area of 0.5 ppb, and no interference is found at high humidity levels. Theory of operation, hardware design, sensitivity and specificity will be discussed.

Introduction Stack Analyzers
HCl and Cl2 are used or produced in a wide variety of chemical processes. They may also be