APPARATUS FOR SAMPLING DUST IN COMBUSTION EXHAUST GAS

PROBLEM TO BE SOLVED: To provide an apparatus for sampling dust from high temp. and high pressure combustion exhaust gas without requiring a stop valve especially withstanding high temp. and high pressure, and capable of using a stop valve of usual capacity. SOLUTION: A dust sampling apparatus includes a sampling pipe 1 extracting high temp. and high pressure combustion exhaust gas from a flue through which the exhaust gas passes, a stop valve 9 and a filter paper holder 2 connected on the downstream side of the sampling pipe 1 through a temp. regulating part, and a drain pot 4, pressure reducing valve 10, flow rate regulating valve 11 and an integrated frowmeter 12 connected on the downstream side of them through a communication pipe 3 as constitutional elements and a heating means is provided to a part outside the flue of the sampling pipe 1 and the filter paper holder 2.