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http://dx.doi.org/10.7842/kigas.2019.23.4.28

Characteristics of methane and propane leaking gas images  

Park, Suri (Dept. of Chemical Engineering, Soongsil University)
Han, Sang-wook (Dept. of Chemical Engineering, Soongsil University)
Kim, Byung-jick (Dept. of Chemical Engineering, Soongsil University)
Publication Information
Journal of the Korean Institute of Gas / v.23, no.4, 2019 , pp. 28-39 More about this Journal
Abstract
In this paper is image characteristics of main gas can be a basic data for the identification of the type of leaking gas and the estimation of the emission quantity in OGI(Optical Gas Image) technology. The purpose of this research is to observe the differences of leaking gas images of the two important hydrocarbons of methane and propane in the industry. We fabricated a wind shield of quartz-based with infrared-permeable properties was prepared and methane and propane were simultaneous emission and then photographed with an infrared OGI camera and we are analyzed it. We have a stable image with windbreak of quartz-based minimizes the effect of wind. As a result of analyzing the image of two hydrocarbons with a leakage gas reference value of 1 L/min, an easily recognizable distances by OGI camera were 6 m for methane and 9 m for propane. In the distances range of 1 to 10 m between the infrared camera and the leaking gas point, the gas plume size of the propane gas was larger and clear than that of the methane gas plume. Compared with the number of points in the image, propane was 3.8 times more than methane.
Keywords
leaking gas; quartz; emission quantity; quantification; OGI;
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