An apparatus for removing dust and offensive
odor generated from ascon includes: a centrifugal dust collection unit which forcibly sucks offensive
odor-causing materials, harmful gas and dust generated from the ascon, produced in an ascon producing unit, via a
pipe so as to
discharge the dust having a relatively
large particle size via a hopper provided at the lower end thereof to the outside by means of a
rotary valve while conveying air and relatively fine dust to a
filtration-type dust collection unit via a
pipe provided at the upper side thereof; the
filtration-type dust collection unit for filtering the offensive
odor-causing materials, harmful gas and fine dust having passed through the centrifugal dust collection unit by means of a filter while discharging the remaining fine dust or the like to the outside by a screw provided at the lower end of the hopper; a first cooling unit for condensing the harmful gas and offensive odor-causing materials of 150° C., supplied from the
filtration-type dust collection unit, by cooling the same to 40˜50° C. using a
cooling tower and thus removing and separating the
moisture and the offensive odor-causing materials; a second cooling unit for condensing the offensive odor-causing materials and harmful gas of 40˜50° C., having passed through the first cooling unit, by re-cooling the same to 20° C. or lower by a condenser and thus removing and separating the
moisture and offensive odor-causing materials so as to prevent a white plume phenomenon; an adsorption unit for removing volatile organic compounds (VOCs) by adsorbing and filtering the offensive odor-causing materials and harmful gas of 20° C., having passed through the second cooling unit, using a
active carbon filter; and a
discharge unit configured such that spray pipes are provided therein in stages so as to remove water-soluble offensive odor-causing materials in the air, from which the volatile organic compounds (VOCs) have been removed via the adsorption unit, by spraying water via a plurality of spray nozzles provided at each of the spray pipes, and a
discharge pipe is provided at the upper side thereof so as to discharge
fresh air, wherein a turbo fan is provided between the filtration-type dust collection unit and the first cooling unit, and wherein an oil-water separation tank and a
water collection tank are additionally provided between the first cooling unit and the second cooling unit such that the oil-water separation tank separates harmful oil and water from each other by discharging the cooled and condensed
moisture and offensive odor-causing materials via pipes, and the
water collection tank collects only water separated from the oil-water separation tank. The apparatus of the present invention can prevent environmental
pollution by removing or minimizing the offensive odor and dust by a batch
system, wherein
air pollutants or any other harmful dust generated in the ascon producing unit is removed or minimized regardless of ducted emission and fugitive emission. Particularly, according to the offensive odor prevention plan, the step for mixing AP oil and heated aggregate and the step for loading the ascon onto a
truck, which are considered to be the main steps for generating the offensive odor, are preformed when producing the ascon by using a new aggregate, while the AP oil vapor is condensed so as to be removed by the first cooling unit, and untreated materials are removed by the second cooling unit in consideration of the physical and chemical properties of the AP oil during re-generation of the waste ascon. Therefore, the apparatus of the present invention is mounted at the rear end of an existing
asphalt plant collection facility such that the moisture which is evaporated in the step for
drying the AP oil vapor and the aggregate is first condensed and collected, and the volatile organic compounds (VOCs) and the moisture are secondarily condensed and collected by the condenser, the untreated offensive odor-causing materials are collected in the adsorption unit and the discharge unit. Thus, effects of decreasing offensive odor and preventing a white plume phenomenon are exhibited.