Treatment of dioxins..

I’m not sure what industry the original poster works in – how were the dioxins produced by you? For the removal of these toxic substances, it might be more effective to integrate this approach with your original device. Generally, the measures for dealing with dioxins include: ① Capture technologies: including electric furnace dust collectors and bag filters, as well as activated carbon adsorption. ? ② Decomposition techniques: incineration, thermal decomposition, photodecomposition, chemical decomposition, ozone decomposition, supercritical water decomposition, biological decomposition, catalytic oxidative decomposition, etc. The pyrolysis method for treating municipal and industrial waste as well as sludge requires higher technical standards and stricter operational control conditions compared to incineration, which results in higher costs for equipment and treatment. However, pyrolysis offers significant advantages over incineration: it not only recovers heat but also generates gas. Additionally, since pyrolysis operates under anaerobic conditions, there is less waste gas and dust generated, thereby helping to reduce the release of dioxins into the atmosphere. This method is widely used in countries such as Japan. ? ③ Corona discharge in an electrostatic precipitator can break down dioxins by severing the chemical bonds within their molecules, thereby completely removing these pollutants. ④The catalytic oxidation decomposition method is a purification technique that uses catalysts to lower the ignition temperature of pollutants in exhaust gases, thereby enabling their oxidation and decomposition at lower temperatures. With the addition of a catalyst, dioxins can be decomposed at 250–350°C, which reduces energy consumption and the requirements for the material of the reactor. A Japanese company has developed a catalyst that can rapidly degrade dioxins, which is mainly used in municipal waste incinerators and industrial waste burners. It enables the rapid degradation of dioxins in gases (to 99%), and this catalyst and device are effective when installed at any location in the exhaust system. This post was last edited by lxq700918 on 2009-4-19 15:00.]

Treatment of dioxins: Appropriate measures can be taken during waste incineration to deal with dioxins. ①Collection technologies: include electric furnace dust collectors and bag filters, as well as activated carbon adsorption. ②Decomposition techniques: incineration, thermal decomposition, photodecomposition, chemical decomposition, ozone decomposition, supercritical water decomposition, biological decomposition, catalytic oxidative decomposition, etc. 　The pyrolysis method for treating municipal and industrial waste as well as sludge requires higher technical standards and stricter operational control conditions compared to incineration, which results in higher costs for equipment and treatment. However, pyrolysis offers significant advantages over incineration: it not only recovers heat but also generates gas. Additionally, since pyrolysis operates under anaerobic conditions, there is less waste gas and dust generated, thereby helping to reduce the release of dioxins into the atmosphere. This method is widely used in countries such as Japan. Corona discharge in an electrostatic precipitator can break down dioxins by severing the chemical bonds within their molecules, thereby completely removing the pollutants. The catalytic oxidation decomposition method is a purification technique that uses a catalyst to lower the ignition temperature of pollutants in exhaust gases, thereby enabling their oxidation and decomposition at lower temperatures (see Figure 2). With the addition of a catalyst, dioxins can be decomposed at 250–350°C, which reduces energy consumption and the requirements for the material of the reactor. A Japanese company has developed a catalyst that can rapidly degrade dioxins, which is mainly used in municipal waste incinerators and industrial waste burners. It enables the rapid degradation of dioxins in gases (to 99%), and this catalyst and device are effective when installed at any location in the exhaust system. In a bag filter, dust-containing gases can be filtered through the dust layer, thereby reducing the concentration of dioxins in the fly ash resulting from waste incineration; the process is shown in Figure 3. The principle and apparatus of supercritical water oxidation are shown in Figure 4.

We are in the waste incineration industry.

This year, our company collaborated with a ## waste incineration power plant, mainly for the decomposition of dioxins. Since our rotary kilns are fully sealed and maintained under a nitrogen atmosphere, the materials are decomposed at high temperatures inside those kilns, and further processing is carried out using other equipment. This collaboration was a great success; they even featured details of it in the ##Evening News! QQ3 59595234