How to achieve efficient VOCs treatment and mixed waste gas treatment safety through LQ-ADW-TO zeolite rotary concentrator + direct-fired high-temperature incineration equipment?

Working principle

1. Adsorption of zeolite rotary concentrator

Efficient adsorption of VOCs: The zeolite rotary concentrator in the LQ-ADW-TO Zeolite Rotary Concentrator (Cylindrical/Disc Type) + Thermal Oxidizer (TO) system is a core adsorption medium with extremely high adsorption efficiency. After entering the system, the waste gas containing VOCs first passes through a pre-filter to remove particulate matter, and then enters the adsorption area of ​​the zeolite rotary concentrator. In the adsorption area, the zeolite adsorbent can quickly capture VOCs in the waste gas, and the purified air is discharged from the rotary treatment section to ensure that harmful substances in the waste gas are effectively removed.

High concentration multiple: The adsorption capacity of the zeolite rotary concentrator enables low-concentration, high-volume waste gas to be concentrated into high-concentration, low-volume waste gas. This process can usually achieve a concentration multiple of 5-15 times, significantly reducing the energy consumption and cost of subsequent treatment and improving the operating efficiency of the entire system.

2. Thermal treatment desorption and concentration

Thermal treatment in the regeneration zone: After the zeolite rotor adsorbed with VOCs enters the regeneration zone, it is desorbed and concentrated by thermal treatment. In the regeneration zone, high-temperature gas is introduced to release the VOCs in the zeolite adsorbent again to form a high-concentration exhaust gas. This process not only achieves the concentration of VOCs, but also provides the necessary conditions for subsequent high-temperature incineration.

Treatment of exhaust gas after desorption: The high-concentration VOCs after desorption are sent to the heat exchanger for further heating to ensure that they reach the reaction temperature required by the direct-fired high-temperature incineration equipment. This process further improves the energy utilization efficiency of the system and reduces energy consumption through the efficient heat exchange of the heat exchanger.

3. Oxidative decomposition of direct-fired high-temperature incineration equipment

High-temperature combustion reaction: After entering the direct-fired high-temperature incineration equipment, the high-concentration combustible and harmful gases are heated to the reaction temperature through high-temperature combustion. Under high temperature environment, VOCs undergo oxidation and decomposition reaction to generate harmless carbon dioxide and water vapor, achieving effective removal of waste gas.

High removal rate: The purification efficiency of direct-fired high-temperature incineration equipment increases with the increase of furnace temperature, and the theoretical removal rate can reach more than 99%. This high removal rate ensures that the exhaust gas meets the national or regional environmental protection standards, and provides reliable technical guarantee for industrial waste gas treatment.

Safety of mixed waste gas treatment

1. Concentration monitoring and control

LEL monitoring: In order to prevent the risk of explosion, the mixed waste gas must be accurately monitored and controlled before entering the direct-fired high-temperature incineration equipment to ensure that it is within the range of less than 1/4 LEL (explosion limit). Through real-time monitoring and automatic control system, the exhaust gas concentration can be adjusted in time to ensure that it is within the safe range.

Safety control measures: On the basis of concentration monitoring, corresponding safety control measures need to be taken, such as setting up safety valves, alarm systems, etc., to deal with possible abnormal situations and ensure the safety of equipment operation.

2. Pretreatment measures

Filtration and separation: The exhaust gas should not contain dust particles or oil mist that cause blockage or flashback. Therefore, before the exhaust gas enters the incineration equipment, it is necessary to remove these particles and oil mist through pretreatment measures such as filtration and separation. The pretreatment equipment can effectively intercept the particles and oil mist in the exhaust gas, prevent it from entering the incineration equipment, and avoid the risk of blockage and flashback.

Selection of pretreatment equipment: The selection of pretreatment equipment should be based on the characteristics of the exhaust gas to ensure that it can effectively remove particles and oil mist in the exhaust gas. Common pretreatment equipment includes bag filters, cyclone separators, etc. These equipment can provide efficient pretreatment effects and ensure the safety of the exhaust gas when it enters the incineration equipment.

3. Treatment of corrosive components

Selection of corrosion-resistant materials: For exhaust gases containing corrosive components such as sulfur and chlorine, the equipment manufacturer must be informed during the selection so that corrosion-resistant materials (such as SUS2205 and above) can be used for equipment manufacturing. Corrosion-resistant materials can effectively resist the corrosive components in the exhaust gas, extend the service life of the equipment, and ensure the reliability of the equipment operation.

Post-treatment measures: In the post-treatment, waste gas containing corrosive components also needs to be specially treated, such as using neutralizers, adsorbents, etc., to prevent equipment corrosion and damage. These treatment measures can effectively reduce the corrosive components in the waste gas and ensure the safe operation of the equipment.

4. Nitrogen oxide emission control

Low-nitrogen combustion system: For areas where nitrogen oxide emissions need to be controlled, a low-nitrogen combustion system should be used when purchasing a burner. The low-nitrogen combustion system can effectively reduce the nitrogen oxides generated during the combustion process and reduce the impact on the environment.

Tail gas treatment equipment: The performance of the tail gas treatment equipment directly affects the removal effect of nitrogen oxides. When selecting equipment, it is necessary to pay attention to factors such as the removal efficiency, operation stability, and maintenance cost of the equipment to ensure that the equipment can operate stably and achieve the expected removal effect.