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Following SO2, NOx, the volatile organic compounds (VOCs) due to air pollution become another focus of world attention. How to achieve a low concentration of the organic flow of exhaust gas deal effectively aroused widespread discussion and research. In this paper, counter-flow catalytic combustion technology and adsorption on activated carbon fiber method, two methods focus on the advantages of selecting both toluene and benzene as the processing target VOCs typically tested to study the adsorption characteristics of carbon fiber and counterflow catalytic combustion handling characteristics, and presents two techniques combined with the process envisaged, the main contents are as follows: First, the use of nitrogen adsorption, scanning electron microscopy, 'X-ray diffraction on carbon fiber microstructure, micro surface morphology, surface elements for the detection and analysis. The results show that carbon fibers having a large number of micro-structures, the larger the specific surface area, and the surface is rich in oxygen-containing functional groups that carbon fiber is a good adsorbent. And then to design and build a test bench for ACF toluene and benzene adsorption characteristics and properties of the adsorbent desorption regeneration. The results show that carbon fiber toluene and benzene adsorption and desorption speed, good effect on the adsorption of toluene in benzene, for trace organic waste also have a higher adsorption capacity, inlet concentration, flow rate and other factors on equilibrium adsorption capacity than big impact. With hot air saturated with carbon fibers on the adsorption desorption experiments carried out. The results show that with the increase of temperature and flow rate, the faster the desorption, the higher the efficiency of activated carbon fiber regenerated adsorption times at 90%, with good cycle performance. Then on the adsorption process mechanism was analyzed, and applied three commonly used isotherm fit the experimental data to the contrary of the structure and adsorption properties of the adsorbent, which Langmuir adsorption isotherm equation for the best fit, indicating adsorption In monolayer adsorption mainly, but also verify the microporous structure contains a lot of carbon fiber. Then in a variety of operating conditions and under different conditions, the use of counter-flow catalytic combustion technology for low concentrations of benzene gas treatment were studied. The results show that the reactor axial temperature distribution of each measuring point is periodically increased with reverse flow fluctuations; total thermal effect of the reactor with the reaction exotherm is the combined result of system cooling, concentration, and the commutation period average wind speed operating conditions the reactor can be changed thermal effect, affect the actual treatment effect. Within the experimental study of benzene purification rate almost 99% or more, indicating the application of the reactor, low concentrations of benzene in the exhaust gas treatment is better. Finally, the activated carbon fiber adsorption and catalytic combustion reactor countercurrent processes associated with vision, combined with 100000 m3 / h Benzene Projects carried out theoretical calculations and conduct a feasibility analysis, economic analysis and advantage analysis. The results show that the proposed design of activated carbon fiber adsorption and catalytic combustion reaction associated with the process has a better idea of ??the feasibility, practicality and economy. Keywords: carbon fiber, VOCs, dynamic adsorption and desorption regeneration, counterflow combustion, combined with process
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