Activated carbon adsorption
Release Date:2023-11-15 Number of views:419
Activated carbon adsorption and concentration-CO catalytic combustion device
Waste gas treatment equipment activated carbon adsorption concentration-CO catalytic combustion device, using PLC automatic control system, through the acquisition and transmission temperature, pressure parameter commissioned signal to control adsorption-stripping-combustion and automatic control of safety protection function, through the key equipment in the purification system, the key point of temperature and pressure monitoring, ensure the safe, stable and efficient production, realize the automatic control of processing process. Anhui Yangtze River Delta Environmental Protection Technology Co., Ltd. focuses on waste gas treatment of industrial enterprises, design and production and engineering installation and construction one-stop service, free solutions, intelligent energy saving and reliable, lifelong maintenance.
The process of activated carbon adsorption concentration-CO catalytic combustion device is as follows:
1. Pretreatment
In order to keep the adsorption activity of activated carbon and reduce the resistance of gas passing through the bed, it is necessary to set up waste gas pretreatment device. In addition, the pre-treatment device also has the role of cooling, for higher concentrations of organic gases, pre-treatment and sometimes condensation process to pre-remove high boiling point, high concentration of ingredients. The pre-treatment usually adopts wet water washing or dry filter dust removal. Suitable selection can be made according to filtration requirements, particulate matter characteristics, pressure loss and equipment structure.
When filtering the exhaust gas with high dust content, it is necessary to install differential pressure gauges on both sides of the filter device to monitor the pressure drop of the filter device at any time to prevent the whole system from overpressure caused by blockage.
2.Adsorption apparatus
Activated carbon adsorption concentration-catalytic combustion system adsorption bed is usually a fixed bed or rotary adsorption device, in the use of general fixed bed adsorbent, the use of honeycomb activated carbon as an adsorbent. The structure of the adsorption device is mostly designed as a square vertical adsorber, the equipment is provided with a front wind cover, a rear wind cover, a gas distributor, an adsorption layer and a desorption inlet and outlet air main pipe, the adsorbent layer is composed of a frame with a staggered layer structure and an adsorbent container arranged on the frame, wherein the adsorbent container is provided with an adsorbent.
The characteristics of activated carbon adsorption devices are affected by many factors, such as operating temperature, air velocity of empty bed, composition and concentration of VOCs, particulate matter in emission stream, etc. . The inlet gas temperature is not higher than 45 ° C, the air velocity in the empty bed is 1.2-1.8 m/s, and the particle concentration is not higher than 1 mg/m3. The organic components with high boiling point should be removed before entering the adsorption bed.
During desorption, the temperature of desorption inlet is controlled below 120 ° C, and the air velocity of empty bed is 0.2 ~ 0.4 m/s.
3.Catalytic combustion device
The catalytic combustion device is a combined structure composed of a heater, a heat exchanger and a reactor. The reactor is composed of stainless steel catalyst support, honeycomb ceramic catalyst, catalyst cross-dislocation installation. Heater electric heating or light fuel burner heating. The purification rate of catalytic combustion unit is affected by operating temperature, space velocity, catalyst properties, composition and concentration of VOCs, and the toxicity of catalyst in exhaust gas.
The operating temperature of the catalytic combustion unit should be controlled below 400 ° C, and the air speed should be 10000-40000h-1. The concentration of organic matter in the exhaust gas entering the catalytic combustion unit should be less than 1/4 of the lower explosive limit.
During the use of the catalyst, the activity of the catalyst may be reduced or disappeared because of the impurities in the reaction material or the by-products themselves, such as sulfur, halogen compounds, heavy metals, etc. , when choosing a catalyst, one should carefully consider its ability to resist the toxicity of pollutants.
4.Control system
Activated carbon adsorption concentration-CO catalytic combustion system using PLC automatic control system, through collecting and transmitting the parametric signal of temperature and pressure, the safety protection function of auto-control adsorption-desorption-combustion and auto-control linkage is achieved, by monitoring the running state of the key equipment, temperature and pressure of the key point in the purification system, the safety, stability and efficiency of production are ensured, and the automatic control of the process is realized.
Activated carbon adsorption and concentration-CO catalytic combustion device
Waste gas treatment equipment activated carbon adsorption concentration-CO catalytic combustion device, using PLC automatic control system, through the acquisition and transmission temperature, pressure parameter commissioned signal to control adsorption-stripping-combustion and automatic control of safety protection function, through the key equipment in the purification system, the key point of temperature and pressure monitoring, ensure the safe, stable and efficient production, realize the automatic control of processing process. Anhui Yangtze River Delta Environmental Protection Technology Co., Ltd. focuses on waste gas treatment of industrial enterprises, design and production and engineering installation and construction one-stop service, free solutions, intelligent energy saving and reliable, lifelong maintenance.
The process of activated carbon adsorption concentration-CO catalytic combustion device is as follows:
1. Pretreatment
In order to keep the adsorption activity of activated carbon and reduce the resistance of gas passing through the bed, it is necessary to set up waste gas pretreatment device. In addition, the pre-treatment device also has the role of cooling, for higher concentrations of organic gases, pre-treatment and sometimes condensation process to pre-remove high boiling point, high concentration of ingredients. The pre-treatment usually adopts wet water washing or dry filter dust removal. Suitable selection can be made according to filtration requirements, particulate matter characteristics, pressure loss and equipment structure.
When filtering the exhaust gas with high dust content, it is necessary to install differential pressure gauges on both sides of the filter device to monitor the pressure drop of the filter device at any time to prevent the whole system from overpressure caused by blockage.
2.Adsorption apparatus
Activated carbon adsorption concentration-catalytic combustion system adsorption bed is usually a fixed bed or rotary adsorption device, in the use of general fixed bed adsorbent, the use of honeycomb activated carbon as an adsorbent. The structure of the adsorption device is mostly designed as a square vertical adsorber, the equipment is provided with a front wind cover, a rear wind cover, a gas distributor, an adsorption layer and a desorption inlet and outlet air main pipe, the adsorbent layer is composed of a frame with a staggered layer structure and an adsorbent container arranged on the frame, wherein the adsorbent container is provided with an adsorbent.
The characteristics of activated carbon adsorption devices are affected by many factors, such as operating temperature, air velocity of empty bed, composition and concentration of VOCs, particulate matter in emission stream, etc. . The inlet gas temperature is not higher than 45 ° C, the air velocity in the empty bed is 1.2-1.8 m/s, and the particle concentration is not higher than 1 mg/m3. The organic components with high boiling point should be removed before entering the adsorption bed.
During desorption, the temperature of desorption inlet is controlled below 120 ° C, and the air velocity of empty bed is 0.2 ~ 0.4 m/s.
3.Catalytic combustion device
The catalytic combustion device is a combined structure composed of a heater, a heat exchanger and a reactor. The reactor is composed of stainless steel catalyst support, honeycomb ceramic catalyst, catalyst cross-dislocation installation. Heater electric heating or light fuel burner heating. The purification rate of catalytic combustion unit is affected by operating temperature, space velocity, catalyst properties, composition and concentration of VOCs, and the toxicity of catalyst in exhaust gas.
The operating temperature of the catalytic combustion unit should be controlled below 400 ° C, and the air speed should be 10000-40000h-1. The concentration of organic matter in the exhaust gas entering the catalytic combustion unit should be less than 1/4 of the lower explosive limit.
During the use of the catalyst, the activity of the catalyst may be reduced or disappeared because of the impurities in the reaction material or the by-products themselves, such as sulfur, halogen compounds, heavy metals, etc. , when choosing a catalyst, one should carefully consider its ability to resist the toxicity of pollutants.
4.Control system
Activated carbon adsorption concentration-CO catalytic combustion system using PLC automatic control system, through collecting and transmitting the parametric signal of temperature and pressure, the safety protection function of auto-control adsorption-desorption-combustion and auto-control linkage is achieved, by monitoring the running state of the key equipment, temperature and pressure of the key point in the purification system, the safety, stability and efficiency of production are ensured, and the automatic control of the process is realized.
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