Air Quality Control in Asphalt Manufacturing Process

Asphalt is generally produced from petroleum: oil wells provide petroleum to refineries, where it is divided into different fractions, one being asphalt. It can be altered in numerous ways. Asphalt for paving goes through a mixing process in either a drum mix plant, which is a large-output and continuously operating facility, or a batch plant, which is a smaller-output plant that mixes in batches.

Concrete is an extremely important part of the modern life infrastructure and its production is a growing sector. Asphalt has many different application, most commonly in the construction of highways and roads. A variety of mixtures can be used to manufacture concrete, some of which include hot mix, cold mix, cut-back, and mastic. The main components are sand, gravel, crushed stone, slag, rock dust, powder, or asphalt binder. The production process includes heating and drying the aggregate, heating of the binder, heating of the mixture and its application, which results in a lot of dust, as the aggregate is often composed of natural rock, fly ash, bottom ash, steel slag, crumb rubber, etc. The components used in asphalt concrete production often turn into dust during the mixing part of the manufacturing process.

The dust that can be inhaled generated from concrete contains significant quantities of quartz dust since crystalline silica, primarily in the form of quartz, is a key ingredient of concrete. Workers at the production facilities are exposed to a silicosis hazard which is a fatal lung disease caused by breathing in small particles of crystalline silica. Moreover, the dust may disrupt the manufacturing process and cause premature equipment aging, failure, and more.

Dust and pollution control at production facilities is essential to prevent dangerous conditions that are detrimental to workers health and premature equipment failure. Dry dust collectors are the most common way of dust removal at concrete plants; however, this method has significant drawbacks. One of the most significant ones is their inability to operate at high temperatures that often occur during asphalt production. Dry dust collectors can be easily clogged by moisture present in a gas stream. Wet air scrubbers can function under all these circumstances without becoming blocked or diminishing the efficiency of air scrubbing.

Wet air scrubbers typically do not top the engineers’ list of emission control equipment because of resistance to shift from familiar dust collection techniques. Nonetheless, the enhancement will lead to considerable advancements in dust management, increased treatment quality, and better operational expenses.

A new type of wet air scrubber, multi-vortex wet air scrubber provides improved air treatment quality and can be used for both particles matter and gas collection. The treatment quality of multi-vortex wet air scrubber is generally 99.95-99.99% for both types of pollutants. Besides high efficiency, multi-vortex wet air scrubber possesses a number of advantages over conventional wet scrubbers – multi-vortex wet air scrubber is compact, omnivorous, eco-friendly, economical, and low-maintenance.

If you are interested in purchasing multi-vortex wet air scrubber, please contact us at info@rdwd.tech

 

 

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