煤层H_(2)S与煤脱硫协同治理研究  

Investigation into the synergistic treatment of H_(2)S in coal seams and coal desulfurization

作　　者：高飞[1,2] 张芸鸣[1] 杨玉龙 侯渊 申佳琦 GAO Fei;ZHANG Yunming;YANG Yulong;HOU Yuan;SHEN Jiaqi(School of Safety Science and Engineering,Liaoning Technical University,Huludao 125100,Liaoning,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Liaoning Technical University,Huludao 125100,Liaoning,China;Shanxi Hequ Jinshen Ciyaogou Coal Industry Co.,Ltd.,Xinzhou 036500,Shanxi,China;Yantai Gem Chemicals Co.,Ltd.,Yantai 264000,Shandong,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛125100 [2]矿山热动力灾害与防治教育部重点实验室,辽宁葫芦岛125100 [3]山西省忻州市河曲县晋神能源有限公司,山西忻州036500 [4]烟台九目化学股份有限公司,山东烟台264000

出　　处：《安全与环境学报》2024年第8期3116-3125,共10页Journal of Safety and Environment

基　　金：国家自然科学基金项目(51874161)。

摘　　要：为研究煤层H_(2)S与煤脱硫的协同治理,自制装置对复配碱液进行H_(2)S吸收和煤脱硫试验。采用离子色谱法、X射线光电子能谱、形态硫测试对吸收液和煤样进行表征,分析协同治理机理,利用响应面法分析各因素对H_(2)S吸收和煤脱硫的影响程度。结果显示:单一碱液均可吸收H_(2)S,但脱硫效果微弱;添加NaClO后,协同治理效果显著且能避免H_(2)S二次逸散,其中NaOH+NaClO协同治理效果最优。在反应后,H_(2)S及煤中低价态硫噻吩、硫醇和硫醚减少,吸收液中SO_(4)^(2-)及煤中高价态硫(亚)砜增加,表明NaOH为元素硫歧化提供碱性条件,元素硫继而被NaClO氧化。NaOH质量浓度对H_(2)S吸收影响最大,NaClO质量浓度对煤脱硫影响最大,NaOH和NaClO交互对煤脱硫与H_(2)S吸收影响显著。利用Design-Expert软件确定最佳参数:NaOH质量浓度为54 g/L、NaClO质量浓度为54 g/L、温度为21.4℃。To investigate the synergistic treatment of H_(2)S and sulfide in coal seams,coal samples from Shaping coal mine were selected for experimentation.A self-designed experimental apparatus was employed to conduct H_(2)S absorption and coal desulfurization experiments using mixed alkali solutions with varying compositions and concentrations.The coal samples were subjected to speciation sulfur testing and X-ray photoelectron spectroscopy before and after the experiment.The absorbents used in the experiment were characterized using ion chromatography.The study delved into the reaction mechanism involved in H_(2)S absorption and coal desulfurization by mixed alkali solutions.Response surface methodology was employed to analyze the influence of various reaction factors on the efficiency of H_(2)S absorption and coal desulfurization.The findings revealed that individual alkali solutions exhibited effective H_(2)S absorption in coal seams,albeit with a weak coal desulfurization effect.However,the addition of NaClO to alkali solutions notably enhanced both H_(2)S absorption and coal desulfurization efficacy,while mitigating the secondary dispersion of H_(2)S.Among several commonly used alkali solutions,NaOH supplemented with NaClO exhibited optimal H_(2)S absorption and coal desulfurization effects.Under alkaline conditions,NaClO oxidized H_(2)S and sulfide in coal.Following the reaction,reductions were observed in H_(2)S and low-valence sulfur compounds in coal,such as mercaptan,thioether,and thiophene,while there was an increase in SO_(4)^(2-)in absorbents and high-valence sulfur in coal,such as sulphone(sulfoxide).Among the factors including NaOH concentration,NaClO concentration,and reaction temperature,it was found that NaOH concentration exerted the most significant influence on H_(2)S absorption efficiency,whereas NaClO concentration had the greatest impact on coal desulfurization efficiency.The interaction between NaOH concentration and NaClO concentration exerted a more pronounced effect on both coal desulfurizatio

关 键 词：安全工程 煤炭脱硫 硫化氢吸收 碱性次氯酸钠溶液 响应面方法 最佳参数选择 

分 类 号：X936[环境科学与工程—安全科学]