I. Core Definition and Working Principle

A活性炭 box is a dry waste gas treatment equipment that utilizes the physical adsorption characteristics of the highly porous structure and high specific surface area of activated carbon to remove organic pollutants, odors, and toxic chemicals from waste gases. Its working principle is divided into two stages:

1. Adsorption processWaste gases are drawn into the chamber by the fan's negative pressure. As they pass through the activated carbon layer, pollutants are captured by the attractive forces of unsaturated molecules on the carbon surface or by chemical bonding, coalescing and remaining trapped in the pores. Clean gases then pass through the carbon layer and are released. For instance, benzene compounds in paint-spraying waste gases and VOCs (volatile organic compounds) in printing waste gases can be efficiently adsorbed.
2. Regeneration processOnce activated carbon reaches吸附 saturation, its adsorption capacity must be restored through thermal regeneration (volatilizing pollutants at a high temperature of 300℃ by baking) or cold regeneration (gaseous pollutants are sublimated at low temperatures by controlling gas flow rate and composition), to achieve recycling.

II. Structural Design and Material Selection

1. Structural form：

• Drawer-style structureEasier for activated carbon replacement, commonly found in small to medium-sized equipment.
• Fixed bed structureSuitable for high airflow applications, such as industrial painting lines.
• Modular designSupports rapid scalability to meet various processing requirements.

1. Material Selection：

• BoxCarbon steel (economy), 304/316 stainless steel (corrosion-resistant, suitable for chemical industry)
• Activated CarbonCoconut shell activated carbon (high adsorption efficiency, suitable for low concentration waste gas), coal-based activated carbon (low cost, suitable for high concentration waste gas), honeycomb activated carbon (low resistance, ideal for high air volume applications).

1. Corrosion-resistant treatmentThe interior wall of the box is coated with epoxy resin or glass fiber reinforced plastic, extending the lifespan of the equipment.