Activated Carbon Adsorption Desorption Condensation Recovery Equipment

Activated carbon adsorption desorption condensation recovery equipment is an organic waste gas treatment equipment that combines adsorption and condensation methods. Activated carbon adsorption desorption condensation recovery equipment gives full play to the advantages of both methods, has high purification efficiency, transforms the disadvantages of adsorption and condensation methods, regenerates the adsorbent, uses low-temperature water vapor for desorption, restores the activity of the adsorbent, and recycles the desorbed organic matter to achieve the purpose of purifying waste gas.

technology principle

The principle of activated carbon adsorption, desorption, condensation and recovery technology is to use granular or fibrous activated carbon to fully adsorb the molecules of organic components in the exhaust gas. When the adsorption reaches a certain saturation, the adsorption is stopped, and saturated low-pressure water vapor is used to heat the saturated activated carbon. The adsorbed organic components are activated and gasified and desorbed from the activated carbon. The activated carbon with restored activity can then re-adsorb the gas molecules of the organic components. Finally, the gas of the desorbed organic components is condensed, liquefied and automatically separated from the water for recovery.

Process flow

Pretreatment adsorption: The exhaust gas is pressurized by the fan and enters the activated carbon adsorber. The organic components are adsorbed when penetrating the activated carbon layer, and the gas after adsorption and purification is discharged from the top.

Desorption regeneration: The desorption recovery process uses water vapor to regenerate the activated carbon. The desorption steam enters from the top, heats the activated carbon bed, and desorbs organic matter. The humidity and temperature of the desorbed activated carbon are very high, and air needs to be blown into the adsorber to cool and dehumidify the activated carbon adsorption bed.

Condensation recovery: The mixed steam generated by desorption is recovered through the condenser to recover the liquid mixed liquid. The mixed liquid can recover organic matter by gravity stratification, distillation, rectification, etc.

EQUIPMENT COMPONENTS

Pretreatment device, activated carbon adsorption device, condensation recovery system.

Pretreatment device

Primary filter: The primary filter is mainly used to filter dust particles larger than 5μm. The primary filter has three styles: plate type, folding type, and bag type. It is made of pure white cotton folding type, and the removal efficiency of particles larger than 5μm can reach more than 95%.

Medium efficiency filter: The bag medium efficiency filter has a unique bag structure to ensure that the airflow fills the entire bag evenly. The unique hot melt technology can prevent excessive squeezing or leakage between bags, which reduces resistance and maximizes dust holding capacity. The "bag support grid" that acts as a reinforcement can prevent the filter from shrinking or bending in extremely poor working conditions. The filtration efficiency for particles ≥1.0μm is 65%.

High efficiency filter: Polypropylene filter paper is used as the filter material, separated by aluminum plates, the outer frame is aluminum alloy profiles, and sealed with environmentally friendly polyurethane sealant. The filtration efficiency for particles ≥0.5μm is 99.5%.

Activated carbon adsorption device

Columnar activated carbon: high adsorption efficiency and strong capacity; can treat multiple mixed organic waste gases at the same time; purification efficiency ≥ 95%; simple maintenance and management, low operating cost; adopts automatic control operation design, easy and safe operation; fully enclosed, can be used indoors and outdoors.

Condensation recovery system

Condenser: a component of the refrigeration system, a type of heat exchanger, can convert gas or steam into liquid, transfer the heat in the pipe to the air near the pipe in a very fast way, and take away the heat of the gas or steam.

Oil-water separator: uses the different densities of oil and water to achieve gravity separation of oil and water. Low investment, low operating costs, high oil removal efficiency, good effect, and no secondary pollution.

FEATURES

1. High solvent recovery value;

2. Waste gas treatment efficiency reaches 90%;

3. Steam desorption efficiency reaches 80%;

4. Low system temperature reduces safety hazards;

5. Can be operated intermittently or continuously;

6. Activated carbon regeneration saves operating costs;

Scope of application

It is used to treat medium and high concentration organic waste gas with large air volume generated in industries such as petroleum, chemical industry, plastics, rubber, pharmaceuticals, printing, furniture, textile printing and dyeing, coating, paint, semiconductor manufacturing, and synthetic materials. It can treat organic substances including benzene, phenols, aldehydes, ketones, ethers, esters, alcohols, hydrocarbons, etc.