Sulfur dioxide removal from flue gases by electrochemical absorption

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• 作者：&#xdc ; mran Tezcan &#xdc ; n ; A. Savas Koparal ; &#xdc ; lker Bakı ; r Ö ; ğ ; ü ; tveren
• 关键词：Air pollution ; SO₂ ; Flue gases ; Electrochemical oxidation ; Electrochemical absorption
• 刊名：Separation and Purification Technology
• 出版年：2007
• 期刊代码：78_13835866
• 类别：ce
• 出版时间：15 February 2007
• 卷：53
• 期：1
• 页码：57-63
• 文件大小：909 K

摘要

Electrochemical absorption and oxidation of SO₂ in aqueous solutions of sulfuric acid on Pt expanded mesh anode with the electrolyte recycle in a unique reactor design and electrode configuration has been investigated. Numerous experimental runs have been carried out in order to observe the performance of the reactor as a function of the operating conditions: the current density, temperature, volume flow rate of the electrolyte, the sulfuric acid concentration, volume flow rate of the gas, the components of gas mixture, and initial SO₂ concentration. The removal efficiency of >93%, which meets the regulations requirement in Turkey, was obtained with an energy consumption of 2.22 × 10⁻² kWh m⁻³ and current efficiency of 47%.