海水烟气脱硫的实验与机理研究

Experimental and mechanism studies on seawater flue gas desulfurization.

作者信息

Zhao Yi, Shuang-Chen M A, Wang Xiano-Ming, Qiong Zhang

机构信息

Department of Environmental Engineering, North China Electric Power University, Baoding 071003, China.

出版信息

J Environ Sci (China). 2003 Jan;15(1):123-8.

PMID:12602616

Abstract

Seawater flue gas desulfurization (Seawater FGD) process has a number of advantages, but the study on mechanism of seawater FGD is little. The effects of absorbing efficiency of SO2 by the constant component and part of trace transition elements in seawater are studied by the experiment. The results indicate that the effect factors of absorption of SO% by seawater are alkaline, ion intensity, catalysis of Cl- and transition metal ions Fe2+ Mn(2+). The degree of effect is alkaline > the catalysis of Cl-, Fe2+ and Mn2+ > ion intensity. The mechanisms of catalysis oxidation for S( IV) by Cl -, Fe2+ and Mn2 are discussed. According to the results, some measures can be used to improve the capability of desulfurization.

摘要

海水烟气脱硫（Seawater FGD）工艺具有诸多优点，但关于海水烟气脱硫机理的研究较少。通过实验研究了海水中常量成分及部分微量过渡元素对SO₂吸收效率的影响。结果表明，海水吸收SO₂的影响因素有碱度、离子强度、Cl⁻及过渡金属离子Fe²⁺、Mn²⁺的催化作用。影响程度为碱度＞Cl⁻、Fe²⁺和Mn²⁺的催化作用＞离子强度。探讨了Cl⁻、Fe²⁺和Mn²⁺对S(IV)的催化氧化机理。根据研究结果，可采取一些措施来提高脱硫能力。