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| Study on Reaction Characteristics and Engineering Application of Desulfurization with Electrolytic Purifying Waste Solution |
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Received:March 03, 2016
Revised:March 08, 2016
Accepted:March 09, 2016
Published Online:July 21, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.08.017 |
| KeyWord:electrolytic purifying waste solution; desulfurization; engineering application; desulfurizing tower |
| Author | Institution |
| SHI Wan-jing |
金川集团股份有限公司化工厂 |
| MAO Yan-li |
金川集团股份有限公司化工厂 |
| TANG Zhao-yong |
金川集团股份有限公司化工厂 |
| FANG Yong-shui |
金川集团股份有限公司化工厂 |
| WANG Hui |
金川集团股份有限公司化工厂 |
| WANG Jin-feng |
金川集团股份有限公司化工厂 |
| LI Ping-de |
金川集团股份有限公司化工厂 |
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| Abstract: |
| Key factors effecting desulfurization of low concentration SO2 flue gas with electrolytic purifying waste solution and the optimum technological conditions were explored. The results indicate that desulfurization efficiency was apparently affected by initial SO2 concentration of flue gas, pH value of absorption liquid, ratio of liquid to gas (L/G), and oxidation reaction time. Under small-scale field experiment conditions, the optimum desulfurization process conditions include inlet SO2 concentration of ≤4 000 mg/m3, pH value of absorption liquid of ≥6, L/G of 4.5 L/m3, and oxidation reaction time after desulfurization of 10 min. Based on the results, double medium desulfurization process was designed, in which electrolytic purifying waste solution was the main desulfurization medium and sodium hydroxide was the absorbing guarantee medium under abnormal condition, at the same time, desulfurization tower with binary system was designed and implemented. The absorption effect is remarkable and offgas meets standard all the time. |
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