Preparation of High Thermal Conductivity Activated Carbon as a Supported Catalyst Suitable for Adsorption and Degradation of Dioxins

Abstract

The invention provides preparation of high-heat-conducting activated carbon suitable for a loading catalyst for adsorption degradation of dioxin. Rich mesopores are adopted, high thermal conductivityactivated carbon and composite catalysts with pore volumes greater than 1 cm<3> / g are adopted as raw materials, and high removal rate and high degradation rate of dioxin can be achieved by loading thecomposite catalyst V2O5-MoO3 / TiO2 onto activated carbon; the high thermal conductivity of the activated carbon matrix can avoid local overheating of adsorbent beds and can greatly improve regeneration performance of the adsorbent beds.

Description

technical field [0001] The invention relates to the preparation of a high thermal conductivity activated carbon suitable for adsorbing and degrading dioxin as a loaded catalyst. Background technique [0002] At present, domestic and foreign dioxin treatment technologies mainly include: selective catalytic reduction technology (SCR), catalytic filter cloth, plasma technology, activated carbon adsorption technology, etc. Activated carbon adsorption technology has the advantages of wide range of adsorbent sources, low cost, and good adsorption effect. As early as 1991, countries such as Japan and Europe had applied the method of activated carbon adsorption of dioxins in the process of waste incineration flue gas treatment. Since then, the application of activated carbon adsorption technology in this field has expanded rapidly. Activated carbon injection combined with bag dust removal technology (ACI+ BF) is currently the most widely used method for removing dioxins from tail g...

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Problems solved by technology

[0003] At present, the main problems of activated carbon treatment of dioxins: 1. At present, most of the commercial activated carbons are microporous activated carbons with developed specific surface area, while activated carbons for adsorbing dioxins need to be rich in small-scale mesopores in the range of 2-5nm pore size.

2. The adsorption of dioxin is generally carried out at a higher temperature, but the adsorption efficiency of ordinary activated carbon decreases at high temperature and it is easy to cause local overheating

3. The regeneration efficiency of activated carbon adsorbed dioxin is low, and it is easy to cause secondary pollution during the regeneration process

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