A gravel circulation dry electrostatic precipitator includes: a drying unit (S1) which conveys and uniformly mixes, heats, and dries recycled aggregates, containing a large amount of moisture, among the materials of asphalt-concrete; a first dust collection and purification unit (S2); a second dust collection and purification unit (S3) in which fine dust, remaining after the odor-inducing substances, harmful gases, and dust that have passed through the first dust collection and purification unit (S2) are filtered by a filter, is discharged to the outside by a screw(S) provided at the lower end of a hopper, and a discharge unit (S4) which uses a turbo fan (F) to forcibly suction fresh air that has passed through the second dust collection and purification unit (S3), thereby discharging same via an outlet (400).
B03C 3/38 - Postes de chargement ou d'ionisation des particules, p. ex. utilisant des décharges électriques, des radiations radioactives ou des flammes
B01D 53/32 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par effets électriques autres que ceux prévus au groupe
The present invention relates to a gravel circulation dry electrostatic precipitator comprising: a drying unit (S1) which conveys and uniformly mixes, heats, and dries recycled aggregates, containing a large amount of moisture, among the materials of asphalt-concrete; a first dust collection and purification unit (S2) which collects and purifies odor-inducing substances, harmful gases, and dust, which are generated in the drying unit (S1), by forcibly suctioning same through a pipe provided on the upper side; a second dust collection and purification unit (S3) in which fine dust, remaining after the odor-inducing substances, harmful gases, and dust that have passed through the first dust collection and purification unit (S2) are filtered by a filter, is discharged to the outside by a screw (S) provided at the lower end of a hopper; and a discharge unit (S4) which uses a turbo fan (F) to forcibly suction fresh air that has passed through the second dust collection and purification unit (S3), thereby discharging same via an outlet (400).
B03C 3/04 - Installations alimentées en électricité de l'extérieur du type par voie sèche
F26B 11/14 - Machines ou appareils à mouvement non progressif pour le séchage d'un matériau solide ou d'objets dans des tambours ou autres récipients quasi fermés, fixes, avec dispositifs agitateurs mobiles le dispositif agitateur se déplaçant dans un plan horizontal ou légèrement incliné
F26B 25/04 - Dispositifs d'agitation, de brassage ou de raclage
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B03C 3/38 - Postes de chargement ou d'ionisation des particules, p. ex. utilisant des décharges électriques, des radiations radioactives ou des flammes
B07B 9/02 - Combinaisons d'appareils semblables ou différents, pour séparer les solides, par utilisation de courants de gaz
The present invention relates to an apparatus for removing dust and odor generated from asphalt concrete by using a typical corona discharge, comprising: a drying and heating part for drying, uniformly mixing and heating coarse aggregates and fine aggregates, which contain a large amount of moisture, among materials of the asphalt concrete; a centrifugal dust collecting part forcibly sucking, through a pipe, odor induction substances, harmful gas and dust generated from the drying and heating part, so as to discharge, to the outside by means of a rotary valve, the dust, of which particles are relatively large among the dust particles, through a hopper provided at the lower end thereof and convey the dust, of which the particles are relatively small, and air, to a dust filtering and collecting part through a pipe provided at the upper side thereof; the dust filtering and collecting part for discharging, to the outside by means of a screw provided at the lower end of the hopper, the remaining dust, of which the particles are relatively large, while filtering, by means of a filter, the odor induction substances, the harmful gas and the dust, which have passed through the centrifugal dust collecting part; a corona discharge and catalyst purification part comprising a corona reaction part for firstly removing air pollutants, which are the remaining odor induction substances, the harmful gas and the dust, by corona discharging the odor induction substances, the harmful gas and the dust, which flow from the dust filtering and collecting part through an inflow port, and a catalyst purification part provided at the lower part of the corona reaction part and receiving, from the corona reaction part, the air pollutants which are the odor induction substances, the harmful gas and the dust not having been completely filtered, so as to secondly remove the same; and a discharging part for forcibly sucking fresh air, having passed through the corona discharge and catalyst purification part, by means of a turbo fan so as to discharge the same to a discharge port, wherein the corona reaction part comprises: an upper housing; a dust collecting part provided at the lower part of the upper housing; a lower housing provided at the lower part of the dust collecting part; and a high voltage applying device, inside the upper housing, for applying voltage to an electrode plate, and the dust collecting part includes an upper insulating part and a lower insulating part supporting the upper and lower parts, of each of a plurality of discharge electrodes, which perform corona discharge by using power supplied from the high voltage applying device, so as to electrically insulate the discharge electrodes from the upper housing, the lower housing and the dust collecting part.
The present invention relates to a powder absorbent supply apparatus for preventing air pollution and, more particularly, to a powder absorbent supply apparatus for preventing air pollution and bad smell, which is configured to be connected to a duct in a dust collecting apparatus connected from a generation source which generates gas-type pollution material to the duct, so that, when pollution gas and a powder absorbent, which move into the dust collecting apparatus, are introduced inside a dust collecting facility, the pollution gas and the powder absorbent are stuck on the surface of a filter bag to absorb and remove air pollution material and bed smell material. Further, before the filter bag reaches a break-through point, the apparatus separates the powder absorbent from the surface of the filter bag, on which the powder absorbent and a particle-type material are coupled and attached and thus the size of the coupled particle is increased, and falls the separated powder together with dust, by automatic circulation pulsing of the filter bag. Therefore, the present invention can greatly increase the dust collecting efficiency thereof.
B01D 53/02 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p. ex. chromatographie préparatoire en phase gazeuse
B01D 53/74 - Procédés généraux pour l'épuration des gaz résiduairesAppareils ou dispositifs spécialement adaptés à ces procédés
5.
APPARATUS FOR REMOVING DUST AND OFFENSIVE ODOR GENERATED FROM ASCON
The present invention is for removing dust and offensive odor generated in the process of manufacturing ascon (asphalt-concrete), and more specifically, relates to an apparatus for removing dust and offensive odor generated from the ascon wherein the air pollutants or other harmful dust particles discharged from an ascon manufacturing part is removed or minimized using a single integrated apparatus so as to remove or minimize the offensive odor and the dust, thereby preventing environmental pollution. The specific means of the present invention comprises: "a centrifugal dust collection part which forcedly sucks offensive odor induction substances, harmful gas, and dust generated from the ascon, manufactured in an ascon manufacturing part, via a pipe so as to discharge dust of which particles are relatively large via a hopper provided at the lower end to the outside by means of a rotary valve while conveying relatively fine dust and air to a filtering-collection part via a pipe provided at the upper side; the filtering-collection part for filtering the offensive odor induction substances, the harmful gas and the fine dust which have passed through the centrifugal dust collection part by means of a filtering filter while discharging the remaining or the like to the outside by a screw provided at the lower end of the hopper; a first cooling part for condensing the harmful gas and the offensive odor induction substances of 150℃, introduced from the filtering-collection part, by cooling the same to 40~50℃ using a cooling tower and removing and separating the moisture and the offensive odor induction substances; a second cooling part for condensing the harmful gas and the offensive odor induction substances of 40~50℃, having passed through the first cooling part, by re-cooling the same to 20℃ or lower by a condenser and removing and separating the moisture and the offensive odor induction substances so as to prevent a white plume phenomenon; an adsorption part for removing volatile organic compounds (VOCs) by adsorbing and filtering the offensive odor induction substances and the harmful gas of 20℃ having passed through the second cooling part; and a discharge part having spray pipes provided in stages so as to remove water-soluble offensive odor induction substances in the air from which the volatile organic compounds (VOCs) have been removed via the adsorption part by spraying water via a plurality of spray nozzles, and a discharge pipe provided at the upper side so as to discharge air, wherein a turbo fan is provided between the filtering-collection part and the first cooling part, and an oil separator and a water collection tank are additionally provided between the first cooling part and the second cooling part such that the oil separator separates harmful oil and water from each other by discharging the cooled and condensed moisture and the offensive odor induction substances by cooling via pipes and the water collection tank collects only water from the oil separator". The present invention structured as above may prevent environmental pollution by removing or minimizing the offensive odor and the dust by a single integrated apparatus, wherein the air pollutants or any other harmful dust generated in the ascon manufacturing part is removed or minimized regardless of the ducted emission and the fugitive emission. Particularly, according to the offensive odor prevention plan, a step for mixing AP oil and heated aggregates and a step for loading the ascon onto a truck, which are considered to be the main steps for generating the offensive odor, are removed when manufacturing the ascon by using new aggregates, while the AP oil vapor is condensed so as to be removed by the first cooling part and untreated materials are removed by the second cooling part 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 a step for drying the AP oil vapor and the aggregates 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 induction substances are collected in the adsorption part and the discharge part. Thus, effects of decreasing the offensive odor and preventing the white plume phenomenon are exhibited.
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