申请人:FMC Corporation
公开号:EP0018635A2
公开(公告)日:1980-11-12
A method for controlling the concentration of dissolved thiosulfate byproduct which forms in a wet desulfurization process, by introducing a peroxygen chemical into its recirculating aqueous absorption medium. A peroxygen chemical such as aqueous hydrogen peroxide is introduced into the recirculating aqueous alkaline absorption medium, preferably after its regeneration, in an amount sufficient to maintain the concentration of thiosulfate byproduct below a saturation concentration. The method is applicable to cyclic wet desulfurization processes, used to recover elemental sulfur from H2S-containing gas streams, in which the absorption medium contains a regenerable oxidizing agent and is subject to thiosulfate byproduct buildup.
一种控制湿法脱硫工艺中形成的溶解硫代硫酸盐副产物浓度的方法,其方法是将过氧化学物引入其再循环的含水吸收介质中。将过氧化学品(如过氧化氢水溶液)引入循环水碱性吸收介质中,最好是在其再生之后,其引入量足以将硫代硫酸盐副产物的浓度维持在饱和浓度以下。该方法适用于循环湿法脱硫工艺,用于从含 H2S 的气流中回收元素硫,其中吸收介质含有可再生氧化剂,并受硫代硫酸盐副产物积聚的影响。