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为了研究焦炉烟气SO2排放,并提出整改措施,介绍了目前研究较多的焦炉烟气处理技术.建议焦化企业加强SO2和NOx排放的源头控制和过程控制.对通过加强管理难以达到排放标准的企业,应考虑采用末端处理技术,使焦炉烟气排放达到国家排放标准的要求. 相似文献
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研究了几种类型水泥窑SO2污染的状况,硫在原燃料中的存在形式时对其逸放的影响,并对目前水泥窑SO2污染的防治问题进行讨论。 相似文献
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我国至2010年末已拥有新型干法水泥生产线 1 200余条,年产熟料逾9.5亿吨,窑尾烟气排放量如按2m3/kg计(标态,以下同),NOx排放平均按 1 000mg/m3计,全年仅新型干法窑的总排量即达190万吨,严重威胁着人类赖以生存的环境。水泥行业不仅要在节能降耗、整治粉尘污染上下功夫,也要把烟气中NOx的治理任务提上日程。烟气脱氮技术研究已有几十年历史,特别是火电工业,其锅炉烟气NOx对大气的污染危害促进了各种脱氮技术的研发并逐渐实用化。水泥工业的脱氮技术,与电力工业的脱氮技术有很多相似之处,本文在借鉴电力工业脱氮技术的基础上,结合水泥工业自身特点,对水泥工业可以采用的几种脱氮技术进行介绍,以期早日实现水泥工业脱氮技术的产业化。 相似文献
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通过在水泥厂现场的实际测量和工业试验,发现水泥厂窑尾废气中SO2的来源,并根据SO2的初始排放浓度找到相应的解决办法。 相似文献
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通过在水泥厂现场的实际测量和工业试验,发现水泥厂窑尾废气中SO2的来源,并根据SO2的初始排放浓度找到相应的解决办法。 相似文献
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A spouted bed of binary particle mixture was applied to a low temperature desulfurization process in order to develop a new type of semidry flue gas desulfurization (FGD) technology. We investigated the effects of operating parameters, such as type of SO2 sorbent, diameter of SO2 sorbent particles, apparent residence time of gas in the bed, approach to saturation temperature and Ca/S molar ratio, on SO2 removal in a bench-scale powder-particle spouted bed. We also investigated the utilization rate of SO2 sorbent and ways to enhance the efficiency of SO2 removal and SO2 sorbent utilization. The experimental results showed that SO2 removal is significantly affected by the approach to saturation temperature and Ca/S molar ratio, and that a high SO2 removal efficiency and effective sorbent utilization can be obtained under appropriate operating conditions. Thus, this new simple process of flue gas desulfurization is highly efficient and has little impact on the environment. 相似文献
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Jadwiga Tilly Zbigniew Tomaszewski Jacek Toczkowski 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1991,52(3):311-315
Absorption of SO2 and SO3 in the solutions of waste ferrous sulfate (so-called ‘green salt’) and in the spent acid after TiO2 hydrolysis, at H2SO4 concentrations ranging from 0–5 to 15 g/m3 (STP), was studied. The rate of SO3 absorption has been found to rise linearly with increasing SO3 concentration in the gas and to be independent on H2SO4 concentration in solution. The SO2 absorption also rises linearly with increasing SO2 content in the gas, but diminishes as H2SO4 concentration increases—an upper limit of 100 g H2SO4/kg H2O is indicated. The initial concentration of the solution must not be higher than 40 g H2SO4/kg H2O. 相似文献
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概要介绍了水泥生产过程中SO2产生、自固、循环富集及逃逸的机制。对行业应用较多的氨法脱硫、熟石灰干法脱硫、FDG湿法脱硫作了介绍,并比较了其工程实际应用效果。从减少投资、简化管理及绿色运行角度考虑,干法脱硫具有一定的优势,如能利用分解炉本身煅烧生成的高活性氧化钙制备脱硫剂则有助于进一步降低脱硫成本。 相似文献
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