Fe2(SO4)3溶液吸收H2S废气工艺研究

报道了一种新型的硫化氢废气处理工艺，包括化学吸收和空气氧化两步。硫化氢被转化为单质硫。通过探讨废气流量、入口H2S浓度、吸收液初始Fe^3 ]、F3^2 ]、pH值、吸收液体积、温度等因素对脱硫率的影响，确定了硫酸铁体系适宜的反应条件。在实验室有限条件下脱硫率达92％以上。工业上进一步强化气液传质，脱硫率可望达98％以上。采用常压空气氧化法再生Fe^3 ，建立了“吸收-再生-吸收”循环体系。

Study on Abatement of H2S by Absorption in Ferric Solution

A novel process for abatement of hydrogen sulfide from gas streams is introduced, based on the combined action of a chemical absorption step and an oxidation step.In this process,H 2S is converted to sulfur. In order to determine the operating conditions of the system, effects of waste-gas flow, inlet H 2S concentration, concentration and volume of ferric solution, pH values, reacting temperature on desulfurization efficiency were investigated. The removal rate can reach 92 per cent under the laboratory condition, and can be further increased to more than 98 per cent in industry. Regenerating ferric ion by air oxidation under normal pressure, we established the recycle system of Absorption-Regeneration-Absorption.