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环境污染治理技术及原理

摘要：提出了FeCu体系室温湿式催化氧化一步高效脱除H₂S废气的新方法,阐述了反应机理、实验装置和工艺流程;考察了Fe³⁺、Cu²⁺浓度和H₂S入口浓度对H₂S脱除效率的影响及Fe³⁺、H+与添加剂NaCl浓度对CuS氧化浸出的影响,分析了Fe³⁺、Cu²⁺、H+浓度和废气中O₂含量对Fe³⁺、Cu²⁺再生的影响;并进行了综合实验.结果表明,当废气中O₂体积分数为5%时,新方法中含40g·L^-1Cu²⁺及80g·L^-1Fe³⁺的吸收体系即能对体积分数为1000×10^-6的H₂S废气100%稳定脱硫,体系除消耗O₂外,过程不消耗任何原料,不产生二次污染,体系无降解问题.

Abstract：The wet catalytic oxidation under room temperature was invented with new type catalyst for H₂Sremoval, and the reaction mechanism, experimental condition and process diagram were also investigated. Not only the effects of the concentrations of Fe³⁺,Cu²⁺ and the inlet concentration of H₂Son the removal efficiency of H₂S, but also the effects of the concentrations of Fe³⁺, H⁺ and added agent NaCl on the oxidizing rate of CuSwere studied. Furthermore the comprehensive experiments were established, and the results showed that the removal efficiency of H₂Scould reach 100%. The removal of H₂S, production of sulfur and regeneration of Fe³⁺,Cu²⁺ could be accomplished in one equipment at the same time, when 5% O₂ was in exhaust gas under the conditions that the concentrations of Fe³⁺, Cu²⁺were 40g·L^-1 and 80g·L^-1 respectively in the absorbing agent. None raw material will be consumed except O₂ in the flue gas and the process has no secondary pollution and no problem of degradation.