Development of Test Equipment for the Performance Evaluation of a Dust Monitor Used in Soot and Smoke Generating Facilities

Abstract

A dust monitor is a device that measures dust concentration continuously in a flue gas. In Europe, a certification system has been established by TÜV and MCERT, and if formal certification is obtained by those system, it will be legally recognized as a continuous monitoring system of dust concentration from the facilities. In Japan, emission regulations have been introduced under the Air Pollution Control Act to monitor the emission of dust from facilities. Although the Act does not currently permit the use of dust monitors for dust concentration measurements, the related JIS standards have promoted above method’s introduction. In this work, flue test equipment aiming at the construction of a performance evaluation system of various dust monitors was developed to secure accurate dust concentration measurements for dust monitor management. As a result, increase in the diameter of the flue, optimization of rectification and dust generation, and improvement of the evaluation component made it possible to respond to the evaluation of dust monitors. The device was equipped to generate gas containing dust with any concentration in a constant velocity flow. It could evaluate the correlation between the analysis values of JIS Z 8808: 2013 and those of various dust monitors.