氧化铁脱除H_2S的固定床反应器研究  

Study of Fixed Bed Reactor for Removing H_2S by Ferric Oxide

作　　者：侯璐达[1,2] 周立辉[3,4] 郑伟[2] 董锐锋[1,2] 罗恒[2] 李岩[3,4] 李云[2] 张早校[1,2] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049 [2]西安交通大学能源与动力工程学院,西安710049 [3]长庆油田油气工艺研究院,西安710018 [4]低渗透油气田勘探开发国家工程实验室,西安710018

出　　处：《西安交通大学学报》2010年第5期91-96,共6页Journal of Xi'an Jiaotong University

基　　金：西安交通大学"985工程"建设资助项目

摘　　要：原油在储存、输运过程中会产生油气挥发和H2S气体逸出,对周围环境影响严重,为此提出了采用氧化铁吸附脱除原油挥发气中H2S的工艺.针对氧化铁吸附脱除原油挥发气中H2S的固定床脱硫反应器建立了数学模型,利用COMSOL软件进行了求解,模拟计算出不同条件下固定床脱硫反应器的穿透曲线,并与实验值进行了对照,同时进一步探讨了吸附容量的影响因素.研究结果表明:采用的氧化铁脱硫剂在空速为1500h-1至4200h-1的范围内,穿透硫容随着空速的降低而增加;空速再度下降会导致穿透硫容减小;穿透时间和穿透硫容随温度的升高而增大.另外,在相同空速下,进料H2S浓度的变化只改变穿透时间,不影响硫容的变化.Hydrogen sulfide gas could escape from storage tank area in the process of crude oil storage and transportation,which can pollute the surrounding environment.According to the characteristics of crude oil tank area,a process with fixed bed reactors for removing volatile gas H2S from the crude oil by ferric oxide was proposed in this study.In order to understand the desulfurization process,a mathematical model of the fixed bed desulfurization reactor was established and the simulation was performed by using the COMSOL software.The simulation result shows that the breakthrough curves under different conditions are in reasonable agreement with the experimental data.Moreover,the investigation into the effect on the adsorption capacity indicates that the breakthrough capacity of the ferric oxide desulfurizing agent increases with the decrease of the space velocity in the range from 1 500 h-1 to 4 200 h-1.If the space velocity decreases further,the breakthrough capacity decreases.The breakthrough time and capacity increase with the increase of the temperature.In addition,the variation of the input H2S concentration changes the breakthrough time,but it has no influence on the variation of sulfur capacity under the same space velocity condition.

关 键 词：氧化铁 脱硫 固定床反应器 穿透硫容 

分 类 号：TQ051.5[化学工程]