A dust collecting facility according to the present invention comprises: a main dust collection apparatus which collects dust particles in gas; and a dust load reduction apparatus which is installed in front of the main dust collection apparatus to reduce dust load of the main dust collection apparatus. The dust load reduction apparatus comprises: a main body including an inlet in which gas flows, a first outlet which enables a portion of gas flowing in from the inlet to flow out to the main dust collection apparatus, a second outlet which is spaced apart from the first outlet, and enables the rest of the gas flowing in to flow out to a sub dust collection apparatus, a first passage which enables the inlet and the first outlet to be communicated with each other, and a second passage which is branched from the first passage to enable the first passage and the second outlet to be communicated with each other; and a dust separation part which is installed within the main body, and guides the dust particles in gas such that the separately collected dust particles are discharged to the first outlet and the second outlet respectively by separately collecting dust particles contained in the gas according to inertial mass after increasing flow rate of gas flowing in. Therefore, a dust collecting facility according to the present invention is capable of obtaining an effect of increasing capacity of the dust collecting facility accordingly by installing the dust load reduction apparatus in front of the main dust collection apparatus without constructing an additional dust collecting facility with respect to an increase in dust and primarily partially collecting the dust through the dust load reduction apparatus, thereby reducing dust load of the main dust collection apparatus.;COPYRIGHT KIPO 2016
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