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Organic Exhaust Gas Treatment System

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Organic Exhaust Gas Treatment System

The Organic Exhaust Gas Purification System offers significant advantages in high purification efficiency, low operating costs, and wide applicability, especially suitable for low-concentration, large-airflow VOCs treatment scenarios.

Technical Advantages

High-Efficiency VOCs Adsorption: Adsorption materials (activated carbon, activated carbon fiber, zeolite rotor) remove over 90% of organics (aromatics, ketones, alcohols), up to 95–99% for some systems.
Solvent Recovery Capability: Desorption-condensation process recovers adsorbed organics for reuse, reducing raw material costs for industries with solvent recycling needs.
Low Energy Consumption & Stable Operation: Adsorption operates at room temperature (no heating/catalysis required), more energy-efficient than combustion methods; high automation, easy maintenance.
Modular Design & Flexible Combination: Standalone use or integration with catalytic combustion/RTO for "adsorption concentration + incineration" process to improve overall efficiency.
Small Footprint & Easy Installation: Compact adsorption units (honeycomb activated carbon, zeolite rotor) ideal for space-limited workshops.

Industry Applications

Industry	Application Scenarios	Main Treated Pollutants	Typical Adsorption Materials
Coating/Spraying	Automotive, furniture, machinery spraying lines	Benzene, toluene, xylene, esters	Activated carbon, zeolite rotor
Printing & Packaging	Gravure printing, lamination processes	Ethyl acetate, toluene, acetone	Activated carbon fiber, honeycomb activated carbon
Electronic Component Manufacturing	Cleaning, photolithography, drying processes	Isopropanol, acetone, VOC precursors	Activated carbon, molecular sieve
Chemical/Pharmaceutical Industry	Reactor exhaust, solvent recovery	Alcohols, ethers, halogenated hydrocarbons	Activated carbon, activated carbon fiber
Rubber/Plastics Industry	Extrusion, injection molding, vulcanization	Non-methane hydrocarbons, styrene	Granular activated carbon, honeycomb carbon
Food/Fragrance Industry	Distillation, extraction tail gas	Natural organics, aldehydes	Activated carbon, clay adsorbent

Ideal for complex working conditions with continuous/intermittent emissions, medium-low concentration large airflow, and multi-component organics.

Process Principle

The Activated Carbon Adsorption Process is a core environmental technology that removes organic pollutants from exhaust gas/wastewater using activated carbon’s porous structure and large specific surface area via physical/chemical adsorption, widely used in VOCs treatment and water treatment.
It primarily relies on activated carbon’s physical adsorption (Van der Waals force/London dispersion force) to trap organic molecules in micropores; chemical adsorption via surface functional groups enhances removal of polar pollutants.

Key influencing factors:

Iodine Value: Critical indicator of adsorption capacity; granular carbon ≥800 mg/g, honeycomb carbon ≥650 mg/g
Pore Structure: Micropores adsorb small-molecule VOCs; meso/macropores act as diffusion channels
Operating Parameters: Superficial velocity (honeycomb carbon ≤1.2 m/s), residence time (0.5–1 s), packing thickness (honeycomb carbon ≥600 mm) directly affect purification efficiency

Activated Carbon Type Comparison

Type	Advantages	Disadvantages	Application Scenarios
Honeycomb Activated Carbon	Low wind resistance, anti-clogging, regular packing	Low strength, difficult regeneration, high cost	Large-airflow low-concentration exhaust gas
Granular Activated Carbon	Easy regeneration, low cost, stable quality	High pressure loss, large footprint	Medium-small airflow, solvent recovery needs
Activated Carbon Fiber	Ultra-high adsorption capacity (20–40× carbon)	High cost, prone to oxidation	Low-concentration refractory VOCs

System Composition & Operation Flow

Pre-Treatment: Water spray + dry filtration removes dust/moisture to prevent carbon layer clogging
Adsorption Stage: Exhaust gas passes through activated carbon layer via fan; VOCs are trapped, purified gas discharged
Desorption & Regeneration: Hot air (TSA) or steam desorption releases high-concentration organics for recovery or catalytic combustion
Safety Monitoring: Differential pressure gauges, temperature sensors, and fire dampers installed; inlet temperature ≤40°C, automatic shutdown at over-temperature (65–80°C)

Organic Exhaust Gas Treatment System

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