基于改进络合铁法的含硫化氢尾气处理工艺模拟与优化  

Simulation and optimization of hydrogen sulfide-containing tail gas treatment process based on improved complex iron method

作　　者：张瑞祥[1] 谢若涵 马晓珑[1] 范峥[2] 李长海[1] 刘姝延 刘锋[1] 胡杨[1] ZHANG Ruixiang;XIE Ruohan;MA Xiaolong;FAN Zheng;LI Changhai;LIU Shuyan;LIU Feng;HU Yang(Xi′an Thermal Power Research Institute Co.,Ltd,Xi′an,Shaanxi,China;College of Chemistry&Chemical Engineering,Xi′an Shiyou University,Xi′an,Shaanxi,China;School of Resources and Environment,Northwest A&F University,Yangling,Shaanxi,China)

机构地区：[1]西安热工研究院有限公司 [2]西安石油大学化学化工学院 [3]西北农林科技大学资源环境学院

出　　处：《石油与天然气化工》2024年第2期1-8,共8页Chemical engineering of oil & gas

基　　金：中国国家留学基金“高能效化工过程中的气液污染控制”(201908610135)。

摘　　要：目的有效处理含硫尾气,确保装置“安、稳、长、满、优”运行。方法采用Aspen Plus V11软件基于Peng-Robinson热力学模型对改进络合铁装置的H_(2)S处理过程进行了全流程模拟,并根据Box-Behnken Design对其进行了响应面设计,得到了最佳H_(2)S脱除率及其对应的优化操作参数。结果此模拟流程能够较好地反映改进络合铁装置的实际运行情况,可以作为后续优化研究的基础模型。当循环溶液温度为47.2℃、循环溶液中Fe^(3+)质量分数为8.4100%、循环溶液体积流量为3.12 m^(3)/h、电解槽电压为0.64 V时,改进络合铁装置的H_(2)S脱除率高达99.999988%。此时,外排气中H_(2)S质量浓度为9.5 mg/m^(3),完全可以满足外排气中H_(2)S质量浓度不大于10 mg/m^(3)的约束条件;t检验结果表明,采用响应面法优化得到的预测值和验证值之间不存在显著差异,其准确度一致。结论该研究结果可为进一步提升含H_(2)S尾气处理水平提供准确、可靠的理论支撑和数据来源。Objective The aim is to effectively treat hydrogen sulfide-containing tail gas and ensure safe,stable,long,full,and excellent operation of the plant.Methods Based on the Peng-Robinson thermodynamic model,Aspen Plus V11 software was used to simulate the whole process of hydrogen sulfide treatment in the improved complex iron device,and the response surface design was executed according to Box-Behnken Design to obtain the optimal hydrogen sulfide removal rate and its corresponding optimized operating parameters.Results The simulation process could better reflect the actual operation of the improved complex iron device and could be used as a basic model for subsequent optimization studies.When the circulating solution temperature was 47.2℃,the Fe^(3+)mass fraction in circulating solution was 8.4100%,the circulating solution volume flow rate was 3.12 m^(3)/h,and electrolytic tank voltage was 0.64 V,the hydrogen sulfide removal rate of the improved complex iron device was as high as 99.999988%.At this time,the mass concentration of hydrogen sulfide in the external exhaust was 9.5 mg/m^(3),which could fully satisfy the constraint that the mass concentration of hydrogen sulfide in the external exhaust was not more than 10 mg/m^(3).The t-test results showed that there was no significant difference between the predicted value optimized by the response surface methodology and the verification value,and the accuracy was consistent.Conclusions The results of this study can provide accurate and reliable theoretical support and data sources for further improving the level of the hydrogen sulfide-containing tail gas treatment.

关 键 词：含硫化氢尾气 改进络合铁法 热力学模型 流程模拟 响应面法 参数优化 

分 类 号：X701[环境科学与工程—环境工程]