Acquisition system for collecting particles of different particle size discharged by fire coal

The invention relates to an acquisition system for collecting particles of different particle size discharged by fire coal. The acquisition system comprises a flue gas collecting box, a flue gas pipeline, a slide plate with wheels, a civil coal-fired furnace, a blower, a frequency converter, a condenser tube, a temperature sensor, a MCI sampler and a MOUDI sampler. The flue gas collecting box, the flue gas pipeline and the slide plate with wheels are made of stainless steel; the civil coal-fired furnace is put inside the flue gas collecting box; the blower can blow air into the flue gas collecting box to dilute flue gas and provide oxygen for combustion; and the particles in the air are filtered by a filter cloth of 120 meshes at the blower air inlet. The apparatus in the invention avoids the defects that original particles in the air cannot be purified to enter the acquisition system, dilution multiple of fire coal flue gas cannot be calculated and flue gas temperature cannot be adjusted, the original apparatus is not convenient for carrying and condensation enters into sampler flue gas etc. The experiment result shows that the effect of collecting particles of different particle size that are discharged by fire coal is obvious and the sampling operation is simple.