| Summary: | 碩士 === 國立中興大學 === 環境工程學系所 === 94 === Continuous microwave radiation (CMWR) of this research , Repack via the home microwave oven. The experiment is to heat Fe3O4 fixed bed with the microwave power 760W, waste gas has flowed to deal with and include the entering of toluene; Heating fixed bed with the microwave, temperature can rise fast and final temperature is steady, there is a lot of spontaneous combustion temperature that has already gone beyond the general organic solvent, can abolish the organic pollution (toluene) in the air. Destroy and get rid of, it can be discharged to the atmosphere directly by the equipment of other prevention and cure of air pollution again that it produces and leaves the tail gas.
In the experimental result, in a situation that have not entered any gas, with the microwave (760W) heat fixed beds in succession, after starting the microwave heating device 12 minutes, Fe3O4 fixed bed can reach the temperature stable state, it is about 860 ℃ to measure the last steady temperature of H1/5 position, it is the most high-temperature place of the bed; If with the space velocity SV=4081hr-1 Microwave power 760W, heating the fixed bed and dealing with different toluene initial concentration, it is the better to find the concentration the higher and deal with the result, the DRE(%) are 2000ppmv > 1500ppmv > 1000ppmv > 500ppmv respectively, one degree of trends of temperature is watched with the bed, it is influenced that entered the concentration of flowing by the toluene too, the concentration the faster intensify high, it is the higher to stabilize temperature finally. In addition, space velocity will influence the fixed bed to deal with polution, the high space velocity (4081hr-1),looks than low space velocity (2040 hr-1), temperature changes more unstable, and it is relatively bad to DRE.
Different relative positions of the room in microwave oven, will is it to microwave fixed bed temperature cause influence, among the high position to heat, under the state not kept in touch with, stabilize temperature for being highest finally with high H1/5, secondly it is H2/5, H3/5, it is H4/5 to be the minimum; It is H3/5 (1.03 ℃sec-1) to intensify the speed >H2/5 (0.78 ℃ sec-1) >H1/5 (0.64 ℃ sec-1) >H4/5 (0.29 ℃ sec-1) .
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