Process and apparatus for determining water content of materials

Details Process and apparatus for determining water content of materials Process and apparatus for determining water content of materials

1989-04-17

1990-06-19

Shoap, Allan N.

Measuring and testing

Moisture content or absorption characteristic of material

73 291, 73 38, 73 611R, 422 83, 422 89, 436 39, 436176, G01N 1508, G01N 3100

Patent

active

049341820

ABSTRACT:
A device and process to measure the water content of a material or the water permeability of a membrane by stably humidifying a carrier gas stream and passing it through calcium carbide to convert the water content of the stream to acetylene, then producing a spectrographic or equivalent trace establishing the stable acetylene value of the carrier gas, then passing carrier gas into contact with the material whose water content is to be measured to evaporate water from it and passing the carrier gas through the calcium carbide whereby the water content of the material is represented by the area between the stable acetylene value and the spectrographic trace caused by the added water.

REFERENCES:
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Knight, H. S. et al., "Determination of Traces of Water in Hydrocarbons," Analytical Chemistry, vol. 34, No. 7 (Jun. 1962).
Jenke, D. R. et al., "Determination of Moisture and Volatile Content in Coal by Pressure Change and Gas Chromatography," Analytical Chemistry, vol. 54, pp. 843-845 (Apr. 1982).
Forbes, J. W., "Trace Water Determination by Infrared Spectrometry," Analytical Chemistry, vol. 37, No. 9 (Aug. 1962).

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