Introduction to the structure and principle of activated carbon concentration catalytic combustion equipment

The equipment mainly consists of dry filtrationactivated charcoalComposed of adsorption bed, catalytic combustion desorption bed, supporting fan, electrical control, etc.

1. Dry filtration

In order to prevent a small amount of water vapor and dust from entering the adsorption and purification system due to exhaust gas, which may cause moisture and blockage of activated carbon, resulting in a decrease in adsorption efficiency. Through the thousand type dust removal process, to ensure that the air source cleanliness of the adsorption treatment system is 96%, the dry filter generally uses non-woven fabric material filter cotton to reduce the replacement cycle of activated carbon and reduce operating costs.

2. Activated carbon adsorption bed

The interior is equipped with an activated carbon layer and an airflow distributor to concentrate and purify organic gases, which is the main component and core process of the main cycle of the entire device. The activated carbon is installed in a male type grave, making replacement extremely convenient.Activated carbon adsorption boxThe designed air volume for a single bed is 15000-20000m ³/h, and an adsorption bed is set up for adsorption, followed by desorption.

3. Using activated carbon adsorbent material

Honeycomb shaped activated carbon has advantages in thermodynamic properties, low resistance, low consumption, and high adsorption rate compared to granular (rod-shaped) materials. It is highly suitable for use under high air flow conditions and has excellent adsorption performance. Its structure is a porous honeycomb with developed pore structure, large specific surface area, and low fluid resistance. This product is particularly suitable for the purification and treatment of organic waste gas in high air flow and low concentration factories, such as toxic and harmful substances such as formaldehyde, benzene, toluene, and xylene in factorieswaste gas treatmentAt present, the product has been widely used in factories in major cities in China and partially exported to the United States, Japan, North Korea, and other countries.

4. CCO catalytic purification device:

This device introduces concentrated organic waste gas into the main equipment. After the organic waste gas is separated from the activated carbon layer by an internal heating device, it is decomposed into water and carbon dioxide through the action of a catalyst, releasing energy simultaneously. The energy is replaced by a heat exchange device to maintain the energy source for equipment self ignition.

5. Catalyst

Using precious metals such as Pd and Pt as the main active components, precious metals platinum and palladium have high activity, high purification efficiency, high temperature resistance, and long service life.

6. Main exhaust fan

The other main component of the circulation system, which guides the exhaust gas to operate in a set channel through a desorption fan, is responsible for directing the hot gas flow to the adsorption box to desorb organic matter, while also introducing the organic matter into the catalytic combustion device for decomposition.

7. Pneumatic and electric valves

According to the operating conditions, it is necessary to control the detachment temperature of the entire equipment during pipeline switching and detachment under electrical control.

8. The central hub of the entire equipment in the electronic control section is controlled by PLC program and HM human-machine interface to ensure the normal automatic operation of each device, while also providing protection, control, and monitoring for each power point.

Working principle of catalytic combustion

working principle

This device is designed based on two basic principles: adsorption (high efficiency) and catalytic combustion (energy saving). It adopts dual gas path continuous operation, with one catalytic combustion chamber and two adsorption beds alternately used. Firstly, the organic waste gas is adsorbed onto activated carbon. When the activated carbon reaches saturation, the adsorption is stopped. Then, the organic matter is desorbed from the activated carbon using a hot air flow to regenerate the activated carbon; The detached organic matter has been concentrated (with a concentration several tens of times higher than before) and sent to the catalytic combustion chamber for catalytic combustion into carbon dioxide and water vapor, which are then discharged

catalytic combustion

When the concentration of organic waste gas reaches 2000Pm or above, the organic waste gas can maintain spontaneous combustion in the catalytic bed without external heating. Part of the exhaust gas after combustion is discharged into the atmosphere, while the majority is sent to the adsorption bed for activated carbon regeneration. This can meet the heat energy requirements for combustion and adsorption, achieving the goal of energy conservation. After regeneration, it can enter the next adsorption; During desorption, the purification operation can be carried out using another adsorption bed, which is suitable for both continuous and intermittent operations.

RC0 catalytic combustion

Suitable for organic waste gases and odorous gases emitted from various industries such as triphenyls, ketones, esters, aldehydes, phenols, etc. The principle is to thoroughly oxidize pollutants into CO2 and H2O through catalytic oxidation.

purpose

This purification device is mainly used for purifying harmful organic waste gases that evaporate or leak in painting, printing, electromechanical, home appliances, shoemaking, plastics, and various chemical workshops, as well as eliminating odors. It is most suitable for low concentration organic waste gases that are not suitable for direct combustion or catalytic combustion and adsorption recovery treatment, especially for high air volume treatment occasions, and can achieve satisfactory economic and social benefits

Technical performance and characteristics

1. The device is designed with advanced principles, unique materials, stable performance, simple structure, safe and reliable, energy-saving and labor-saving without secondary pollution. The equipment occupies a small area and is lightweight. The adsorption bed adopts a drawer type structure, which is easy to load and replace.

2. Adopting a new type of activated carbon adsorption material, a honeycomb shaped block of activated carbon, which is highly suitable for use under high air flow conditions

3. The catalytic combustion chamber adopts precious metal catalysts with honeycomb ceramic like carriers, which have low resistance and high activity. When the concentration of organic vapor reaches above 200FPn, spontaneous combustion can be maintained.

4. Low power consumption, due to the low resistance of the bed layer, it can work with a low-pressure fan, which not only consumes less power but also reduces noise. When burning, it needs to be heated and started. After the catalytic combustion of organic matter in the catalytic bed begins, its combustion heat can be sufficient to maintain the temperature required for its reaction. At this time, the electric heating stops, and the activated carbon bed that adsorbs organic waste gas is started for about 1 hour. The catalytic combustion waste gas is used for desorption regeneration, and the desorbed gas is sent to the catalytic combustion chamber for purification without external energy, with low operating costs and significant energy-saving effects.