CAJ | 학술논문

以典型烟气循环流化床脱硫工艺所产生的脱硫灰为样品,采用理论分析、化学分析、电镜扫描、热重分析、X-衍射分析等手段,较系统地研究了脱硫灰的化学组成、外观形貌、物相组成等特性.研究表明:脱硫反应对原粉煤灰颗粒有侵蚀作用,脱硫塔内存在明显的团聚效应;脱硫灰的主要物相组成是:莫莱石、石英、Fe_2O_3等粉煤灰物相,以及CaSO _3·1/2H_2O、CaCO_3、CaSO_4等脱硫物相.值得注意的是CaSO_3·1/2H_2O是主要的含硫物相,且各灰样中CaCO_3含量较大.
이전형연기순배류화상탈류공예소산생적탈류회위양품,채용이론분석、화학분석、전경소묘、열중분석、X-연사분석등수단,교계통지연구료탈류회적화학조성、외관형모、물상조성등특성.연구표명:탈류반응대원분매회과립유침식작용,탈류탑내존재명현적단취효응;탈류회적주요물상조성시:막래석、석영、Fe_2O_3등분매회물상,이급CaSO _3·1/2H_2O、CaCO_3、CaSO_4등탈류물상.치득주의적시CaSO_3·1/2H_2O시주요적함류물상,차각회양중CaCO_3함량교대.
With the desulfurized ash produced in the typical desulfurization process in a flue gas circulating fluidized bed serving as a sample,by using such methods as theoretical analysis,chemical analysis,electronic telescope scanning,thermogravimetry analysis and X-ray diffraction analysis etc.,more or less systematically studied were such characteristics as the chemical composition,morphological appearance and physical phase composition etc. of the desulfurized ash. It has been found that the desulfurization reactions can play a role of eroding the raw ash particles from pulverized coal and there exists a conspicuous agglomeration effect in the desulfurization tower. The main physical phase composition of the desulfurized ash includes pulverized-coal-produced ash phase,such as mullite,quartz and Fe_2O_3 etc.,and desulfurization-produced physical phase,such as CaSO_31/2H_2O,CaCO_3 and CaSO_4 etc. It is worth paying attention to the fact that CaSO_31/2H_2O represents the main sulfur-containing physical phase and the CaCO_3 content in various ash samples is relatively big.