循环流化床烧结烟气脱硫技术研究
文献类型：学位论文
| 作者 | 金婷 |
| 学位类别 | 硕士 |
| 答辩日期 | 2010-05-27 |
| 授予单位 | 中国科学院研究生院 |
| 授予地点 | 北京 |
| 导师 | 朱廷钰 |
| 关键词 | 烧结烟气脱硫 循环流化床 脱硫灰 |
| 其他题名 | Research on circulating fluidized bed sintering gas desulfurization system |
| 学位专业 | 环境工程 |
| 中文摘要 | 近年来，虽然在钢铁烧结烟气脱硫市场的有力牵动下，我国钢铁行业的烧结烟气脱硫技术发展较快，但整体上仍缺乏成熟可靠的脱硫技术。针对国内的钢铁企业发展现状和烧结行业的特点，循环流化床烟气脱硫技术为代表的半干法脱硫是烧结烟气脱硫合理的技术选择之一。本文利用课题组自主开发的内外双循环流化床烟气脱硫技术和较丰富的工程调试经验，设计并搭建了实验室规模的内外双循环流化床烧结烟气脱硫实验台。实验台采用模块化设计，不同单元模块的设备可便捷更换，能够完成冷、热态实验。针对实验过程中的各种问题，经过多次调试，对实验台各单元进行了整体优化，最终满足了内外双循环流化床烟气脱硫的冷、热态实验操作要求。在理论计算的基础上，通过实验并观察反应塔内物料流化状况，分析实验数据，最终确定了循环流化床的基本操作参数，为热态脱硫试验操作提供实验依据。此外，通过激光粒度分析仪、比表面分析仪、扫描电镜等仪器对循环流化床烧结烟气的脱硫产物进行分析，并与电厂脱硫灰进行了比较。研究表明与电厂脱硫灰相比，烧结烟气脱硫灰颗粒粒径较小，比表面积较大；颗粒形状不规则，多孔，结构疏松；晶相成分主要有亚硫酸钙、硫酸钙、碳酸钙等；其中钙、硫元素含量较高，且亚硫酸钙含量明显高于硫酸钙。本文工作为深入研究和开发循环流化床烧结烟气脱硫技术提供了一定实验支持，为下一步实验研究和工程系统设计提供依据。 |
| 英文摘要 | The development of sintering gas desulfurization of Chinese iron and steel enterprises was still in the development stage on the whole for lack of mature and reliable desulfurization technique. In order to meet the characteristics of the domestic sintering industry, especially for the sake of the existing site conditions and the development of integrated multi-component removal technology for sintering gas, circulating fluidized bed flue gas desulfurization (CFB-FGD) technology is one of the suitable technologies. In this paper, by use of the independent exploitation of "Inside and Outside Circulating Fluidized Bed Flue Gas Desulfurization Technology" (IOCFB-FGD) associated with abundant project experience, a laboratory scale unit of CFB flue gas desulfurization was designed and put up. The experiment system was designed based on modular ideology, thus making various systems equipments easy to change and the experiment operated either in cold or hot state. Through debugging, the systems were optimized to comply with the operation. By theoretical calculation and practical observation of the flow of the material conditions in the react tower, which is linked with the exploration of the rationality of the design, the basic operating parameters are significantly determined. In a word, all of these provide basis and guidance for desulfurization experiment. In addition, laser particle size analyzer, surface area analyzer, scanning electron microscope (SEM), X-ray diffraction (XRD), thermo gravimetric differential thermal analysis and x-ray fluorescence spectroscopy were employed to analyze the properties of desulfurization ash of CFB sintering flue gas. By comparison with power plant desulfurization ash, conclusion made that on the one hand, the particle diameter of the sintering flue gas desulfurization ash is smaller and specific surface area is higher. On the other hand, the sintering flue gas desulfurization ash not only shows different shapes and loose structure but also contains many small holes. It consists of calcium sulfite, calcium sulfate, calcium carbonate, et al. Moreover, it is confirmed that calcium and sulfur are more than other elements and the content of calcium sulfite is higher than that of calcium sulfate in desulfurization ash. The researches lay the foundation of the theoretical basis for the safe disposal and valorizations of sintering flue gas desulfurization ash, further facilitate the application of the CFB sintering flue gas desulfurization technology. To sum up, this paper provides fundamental data and experimental experience for further experimental research and the development of CFB sintering flue gas desulfurization technology. |
| 公开日期 | 2013-09-17 |
| 页码 | 71 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/1533]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 推荐引用方式 GB/T 7714 | 金婷. 循环流化床烧结烟气脱硫技术研究[D]. 北京. 中国科学院研究生院. 2010. |
入库方式： OAI收割
来源：过程工程研究所
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