共查询到20条相似文献,搜索用时 62 毫秒
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随着国家对氮氧化物排放的控制越来越严格,选择性催化还原(SCR)烟气脱硝技术在燃煤电厂脱硝工程中被广泛应用。文章介绍了我国烟气脱硝催化剂的产生及回收利用情况,并对现有的回收利用工艺进行了分析,重点介绍了一种可促进烟气脱硝催化剂资源利用最大化、避免造成二次环境污染的脱硝催化剂回收利用工艺。 相似文献
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燃煤电厂SCR脱硝装置失效催化剂处理方案探讨 总被引:1,自引:0,他引:1
随着燃煤电厂SCR脱硝装置的建设,失效的催化剂的量将急剧增长。本文通过分析燃煤电厂SCR脱硝装置使用的催化剂成分和使用过程中失效的原因,初步探讨了失效催化剂的再生和回收利用方案。认为应该对失效催化剂进行规范合理处置。 相似文献
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从废催化剂中回收铂钯的工艺研究 总被引:2,自引:0,他引:2
利用N-正丁基异辛酰胺(BioA)及二烷基亚砜(MSo)对废汽车催化剂浸出液中的铂、钯进行了萃取研究,提出MSO低酸度二级错流萃取Pd,BioA高酸度二级错流苹取Pt的Pd-Pt分离工艺流程,Pt、Pd的革取率能达到99%以上. 相似文献
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选择性催化还原(SCR)是目前控制氮氧化物排放的主要技术。本文介绍了锅炉炉后脱硝系统的布置位置及工艺条件、已经工业化的氨选择性高温还原钒催化剂的特点,以及近年来低温脱硝催化剂的研究现状。指出我国脱硝催化剂应提高还原剂的选择性,开发新型低温催化剂应重点考察烟气中的水、二氧化硫及硫酸氢铵等对催化剂的影响。 相似文献
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Huan Liu Yangwen Jia Cunwen Niu Yongde Gan 《Journal of the American Water Resources Association》2019,55(5):1349-1366
Water resources have become a barrier hampering socioeconomic development. Changes in the spatial distribution of water use profile have direct impacts to regional water use efficiency. However, the related research is inadequate, and a more suitable way to analyze regional water use profile is necessary. The Gini coefficient and location quotient, two reliable methods commonly used in discussing the spatial distribution of elements, were introduced and calculated. Taking Gansu Province as the study area, the concentration effect of industrial water use was the strongest, followed by domestic, environmental, and agricultural water use. However, a balanced distribution of agricultural water use failed to be coordinated with the production conditions, the center of Gansu’s grain production should be established to enhance the scale effect of agricultural production. The industrial agglomeration effect remained weak, and each region’s dominant industries need to be developed vigorously. Gansu’s domestic water use was consistent with its population distribution, but it is necessary to reduce the water use gap between urban and rural areas. With a growing awareness of environmental protection, environmental water use exhibited a more balanced distribution. Overall, the methods are simple and have good applicability, and the results can provide a reference in water use optimization. 相似文献
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建设项目竣工环保验收存在的问题及对策建议 总被引:2,自引:0,他引:2
建设项目竣工环境保护验收是我国环境保护管理的重要手段,是环境监测依法为环境管理提供技术支持、技术监督和技术服务的直接途径,也是落实"三同时"管理制度的重要环节.结合实际工作,对新疆境内建设项目竣工环保验收中存在的问题进行了分析,并有针对性地提出了对策和建议. 相似文献