I. Core Definitions and Working Principles

Activated Carbon Adsorption 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 retained in the pores. Clean gases then pass through the carbon layer and are released. For example, benzene compounds in paint spray waste and VOCs (volatile organic compounds) in printing waste can be efficiently adsorbed.
2. Regeneration processOnce activated carbon adsorption reaches saturation, its adsorption capacity can be restored through thermal regeneration (vaporizing pollutants with high-temperature baking at 300°C) or cold regeneration (gas flow rate and composition control to gasify pollutants at low temperatures), thereby achieving recycling.

Section 2: 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-volume applications, such as industrial painting lines.
• Modular designSupports rapid scaling to meet various processing requirements.

1. Material Selection：

• CasingCarbon 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 airflow scenarios).

1. Corrosion protection treatmentThe interior of the box is coated with epoxy resin or fiberglass, extending the lifespan of the equipment.