Method and apparatus for detecting and measuring a gas

Details Method and apparatus for detecting and measuring a gas Method and apparatus for detecting and measuring a gas

1979-04-20

1981-11-10

Smith, William F.

Chemistry: physical processes

Physical processes

Crystallization

23230A, 23230M, 422 91, G01N 2178

Patent

active

042995930

ABSTRACT:
A technique is described for continuously detecting or measuring a gas such as hydrogen cyanide in a gas stream. The gas stream is passed in counterflow relationship with a well defined stream of gas absorbing reagent liquid in an absorption cell through which the reagent flows under gravity feed. The exposed reagent is passed through a heater in which the color of the reagent is developed. The reagent is passed through the heater at a constant regulated flow rate with a flow controller operative between the absorption cell and the heater to provide a consistent color development. A stable and consistent detection and measurement of the amount of hydrogen cyanide in the gas stream is obtained.

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Reilly, D. A. "The Analysis of Combustion Gases: Development of a Continuous Analyzer for Hydrogen Cyanide" ICI Report. No. 82392 (2-76).
Buckley, P. S., Techniques of Process Control, John Wiley and Sons, Inc., New York, 1964, pp. 187.

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