摘要
在实验室条件下通过镁渣和粉煤灰的水合反应,制备了可用于循环流化床锅炉的脱硫剂。采用热重分析方法对不同水合条件下的脱硫剂的钙转化率进行了研究;借助X射线衍射分析研究了水合前后以及脱硫前后物质的变化,并分析水合以及脱硫反应的原理。在此基础上研究了水合过程中不同添加剂的影响。结果表明,在最佳水合条件下,所制备的脱硫剂的钙转化率可达36.70%,最佳的脱硫反应温度为920℃。水合过程添加乙二酸或氢氧化钠,脱硫剂钙转化率最大可以进一步提高至73.7%。
Under the condition in a laboratory,prepared was a desulfurization agent used for circulating fluidized bed boilers through a hydration reaction between the magnesium slag and the pulverized coal ash. The calcium conversion rate of the desulfurization agent was studied under various hydration conditions by using the thermogravimetric analytic method. Changes of substances before and after the hydration and desulfurization were analyzed and studied with the help of the X-ray diffraction and the principle governing the hydration and desulfurization reaction was analyzed. On this basis,the influence of various additives on the hydration process was studied. It has been found that under the optimum hydration condition,the calcium conversion rate of the desulfurization agent thus prepared can reach 36. 70% with the optimum desulfurization reaction temperature being 920 ℃ . If acetic acid or sodium hydroxide is added during the hydration process,the calcium conversion rate of the desulfurization agent can further increase to 73. 7% .
出处
《热能动力工程》
CAS
CSCD
北大核心
2013年第4期415-419,440-441,共5页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金资助项目(51077142)
山西省高等学校留学回国人员科研资助项目(2011-15)
山西省研究生优秀创新项目(2012-21)
关键词
镁渣
粉煤灰
水合参数
钙转化率
添加剂
magnesium slag
pulverized-coal ash
hydration parameter
Bezier function
calcium conversion rate
additive
