Product Introduction

The Active Carbon Tower is an air pollution control facility that adsorbs high concentrations of volatile organic compounds (VOCs) onto activated carbon to remove them. This device inhales volatile organic compounds and passes them through the inside of the carbon-filled adsorption tower to eliminate them. It is particularly useful when the gaseous pollutants are non-combustible or when the concentration of pollutants is low, and it can also remove odors. Depending on the type and characteristics of the pollutants, adsorbents other than activated carbon, such as zeolite, silica gel, and alumina, can be used, making it applicable in various work environments.

Key Features

• Uses a large amount of activated carbon to purify air

  • Physically and chemically absorbs and adsorbs VOCs and odors by passing them through equipment filled with activated carbon.
  • Activated carbon is a carbonaceous material made from the shells of palm fruits chemically and physically heat-treated at 600-900°C, having an internal surface area of about 1,200 m² per gram.
  • Due to its excellent adsorptive properties through its internal surface area, activated carbon is commonly used for air purification.

Key Design Factors

• • The design ensures that gases drawn into the adsorption tower pass through the activated carbon at an average velocity of 0.3-0.5 m/sec, ensuring that gases remain in contact with the activated carbon for at least 1.0 sec.
  • If dust, moisture, or corrosive substances are present in the gas, they are first removed in a separate pretreatment facility before being introduced into the adsorption tower.
  • If the temperature is high, desorption of the adsorbed pollutants from the activated carbon occurs, so if the gas temperature exceeds 54°C, it must be cooled below 40°C using a heat exchanger.
  • Adsorbents other than activated carbon can be used, selecting the appropriate one based on the type and characteristics of the gaseous pollutants.

  Table

  Adsorbent	Purpose
  Activated carbon	Solvent recovery, odor removal, gas purification (most commonly used)
  Alumina	Drying of gases, air, and liquids
  Bouxite	Oil removal from petroleum, drying of gases and solutions
  Zeolite	Separation of substances with different polarity or saturation of hydrocarbons
  Bone char	Decolorization of sugar
  Decoloring carbon	Removal of oil, dyes, fats, and waxes, decolorization of beverages
  Fuller's earth	Refinement of lubricating oils, fats, waxes
  Magnesia	Refinement of gasoline, fats, waxes
  Silicagel	Removal of impurities from caustic soda solutions
  Strontium sulfate	Drying and purification of gases, removal of iron from caustic soda solutions

Application

• • Facilities using organic solvents, paint facilities, semiconductor factories, PCB factories, plating factories, food factories, paint manufacturing, printing plants, petrochemical factories, wastewater treatment plants and other gas emission facilities
  • Air pollutant emission facilities subject to environmental permits and licenses
  • Businesses required to submit hazardous risk prevention plans