一种新型双碱法烟气脱硫剂的研究  

Study of the novel dual-alkali flue gas desulfurization reagent

作　　者：王振平 WANG Zhenping(Shenmu Branch of Shaanxi Coal and Chemical Industry New Energy Group Co.Ltd.,Yulin 719300,China)

机构地区：[1]陕西煤业化工新型能源有限公司神木分公司,陕西榆林719300

出　　处：《选煤技术》2020年第5期34-37,共4页Coal Preparation Technology

摘　　要：我国大型化工企业对SO2排放的控制主要采用石灰石/石膏法或MgO法。研究综合上述两种脱硫技术的优点,利用MgO、CaO与碱性固体废弃物制备了一种新型双碱法烟气脱硫剂,并对比分析了MgO与该脱硫剂在不同温度下的溶解性、不同初始浓度的硫化物对MgO水溶液与该脱硫剂水溶液pH值的影响。结果表明:在常温条件下,含硫废水中硫化物的初始浓度越低,MgO和该脱硫剂与硫化物的反应速率越快,且在3 min之内,该脱硫剂与硫化物几乎反应完全,是一种高效的烟气脱硫试剂。Limestone/gypsium or MgO is predominantly used by large chemical sectors for control of SO2 emission in China.By incorporating the special merits of the above-mentioned two technologies,a novel dual-alkali desulfurization reagent prepared with MgO,CaO and some basic solid waste is developed.The effect of temperature on solubility of MgO and the novel desulfurization agent,and the effect of initial concentration of sulfides on pH value of aqueous solutions of MgO and the novel agent are explored through comparison and analysis.Result of study indicates that at normal temperature,the lower the initial concentration of sulfides in sulfurous wastewater,the faster the reaction rate of MgO and desulfurization agent with sulfides,and their reaction can be completed within 3 minutes.The novel agent proves to be a high-efficiency flue gas desulfurization reagent.

关 键 词：烟气脱硫 双碱法烟气脱硫剂 MgO脱硫法 反应速率 

分 类 号：TD94[矿业工程—选矿] X701.3[环境科学与工程—环境工程]