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Experimental Study on Electrochemical Desulphurization of Three-dimensional System

Author: PengWeiHua
Tutor: HuJiangJun
School: Wuhan University
Course: Environmental Engineering
Keywords: Three - dimensional electrode Desulfurization SO2 Activated carbon fiber
CLC: X701.3
Type: Master's thesis
Year: 2004
Downloads: 165
Quote: 2
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Abstract


Flue gas the SO 2 is one of the major pollutants that cause air pollution, our SO 2 caused by acid rain area is growing in recent years, so the flue gas desulfurization is inevitable line. In recent years, indicators of controlling the emission of gaseous pollutants increasingly stringent, but suitable for industrial applications flue gas desulfurization technology in controlling small boiler emissions of SO 2 aspects are still some problems. Electrochemical desulfurization technology has some advantages in this regard, but electrochemical desulfurization research in China is still in the preliminary stage of the study, the technology is not mature. Strengthen research in this area is necessary. In addition, the electrochemical flue gas desulfurization technology research is focused by means of indirect oxidation, few studies on the direct electrochemical oxidation desulfurization technology, on the other hand, three-dimensional electrode technology, represented a new electrochemical techniques in power applied research in the chemical desulphurization technology is still in the blank stage. Conduct a study on the feasibility of self-designed test apparatus, the three-dimensional electrode FGD. First pilot study on three-electrode electrochemical desulfurization, desulfurization effect whether the electrolysis process and whether the electrode filler, and then compare the different electrode filler desulfurization effect of the three-electrode system, filter out the best in several electrode filler activated carbon fiber electrode filler. The electrode filler on the basis of experiments in the above, further treated with activated carbon fiber as a three-dimensional electrode, analyzes the the desulfurization effect under different experimental conditions, and analysis of the various experimental factors influence on the test results. Experimental studies have shown that: (1) electrochemical reaction can promote SO 2 in the acid absorption liquid absorption capacity. (2) three-dimensional electrode system can improve the the SO 2 the absorption effect, the electrode filler can improve the absorption process gas - liquid mass transfer interface, but also increases the effective reaction area of ??the electrochemical reaction, and can be greatly shorten the charge transfer distance. (3) Activated carbon fiber is a good three-dimensional the electrode packing medium, has a good effect for three-dimensional electrode desulfurization. (4) of activated carbon fibers on the adsorption of ions in the solution. (5) reaction of the electrolysis voltage, the concentration of the electrolyte solution, the height of the filler layer, have a greater impact SO 2 of the inlet concentration, desulfurization effect. (6) under the best conditions, flue gas desulfurization efficiency can reach above 80%, three-dimensional electrode system better desulfurization performance.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Exhaust gas processing and utilization > Desulfurization and desulfurization
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