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火电厂电除尘器电控系统的节能改造 总被引:1,自引:0,他引:1
电除尘器是火力发电厂的高能耗设备,从细节入手,挖掘电除尘器节能潜力,利用原有设备进行改造,采用简易脉冲供电方式和临界反电晕供电方式可以提高电除尘器电能的利用率,大幅度地降低电除尘器的能耗,实现节能。通过对电除尘器电控系统改造实例的前后电场参数进行比较,说明这种改造方法是可行的,实现了经济、节能与环保三者的兼顾与统一。 相似文献
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解析电除尘烟温与粉尘特性的最佳结合点 总被引:2,自引:0,他引:2
分析了电除尘烟温对粉尘特性的影响,以及烟温对电除尘器效率的影响,从中找出烟温调节与粉尘特性的最佳结合点。利用烟温调节的理念,应用余热利用节能电除尘技术对电除尘器进行提效改造,通过实例证明,这既可扩大电除尘器适应性和提高电除尘效率、满足低排放要求,又可节省电煤消耗和降低电耗,具有环保与经济的双重效益。 相似文献
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随着国家环保标准的提高,低低温电除尘器已被更多厂家认同并成为了首选的改造提效方式,低低温改造是通过降低烟气温度来达到提高除尘器效率的目的,低低温电除尘器的烟气温度一般只有90℃,为防止酸露凝结,低低温电除尘器的灰斗、瓷套、瓷转轴及气化风等需加热,如采用电加热将消耗大量的电能,高效节能的电除尘器热风系统利用电厂0.5~1.0MPa的辅气对除尘器灰斗进行加热,再分别通入瓷套、瓷轴热风加热器和灰斗气化风加热器替代电加热,节能效益显著,大大降低了电除尘器的加热成本。 相似文献
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介绍了大型火电厂在电除尘器本体的基础上,通过对电除尘器极板极线进行水冲洗、专业化大修及对影响电除尘效率的因素进行综合治理,同时采用多种电除尘器改造技术的组合,克服和避免了电除尘器本身的技术局限性,能够满足不同锅炉燃烧工况,有效提高电除尘器的除尘效率,实现电除尘器烟尘达标排放。 相似文献
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电除尘器接地系统的设计和施工,不仅会直接影响电除尘器性能和效率,也会影响其它控制系统的正常工作。本文从电除尘器的工作特性出发,解读了电除尘器标准中有关接地的各项要求,并希望通过此文能对规范电除尘器接地系统的设计和施工有所帮助。 相似文献
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目前鞍钢在用的电除尘器大多采用侧部摇臂锤振打,存在振打机构故障率高、清灰效果逐渐下降的缺点。因而声波清灰作为辅助清灰可大大提高电除尘器的除尘效率,降低排放浓度,完全具备推广应用条件。 相似文献
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简介了湿式电除尘器的结构特点和工作原理,通过对燃煤电厂脱硫后湿式电除尘器的应用,提出了对湿式电除尘器在选型、应用上的建议,对湿式电除尘技术的发展前景进行了探讨。 相似文献
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Trametes versicolor decolorized 2000 mg L(-1) of the mono-azo substituted naphthalenic dye Amaranth with no dye sorption observed visually. The changes in the toxicity were assessed over a period of 30 d for the dye-treated viable culture, control (no dye added), and a boiled culture treated with dye, using the Microtox Acute Toxicity assay. Before dye addition, the culture filtrate had some toxicity, which increased after the dye addition. The toxicity of the dye-treated culture decreased during the treatment. The loss of toxicity occurred at the same time, with the loss of color suggesting that detoxification is associated with decoloration. The change in pH was due to natural metabolic processes and had a small effect on detoxification. Because the toxicity of the treatment was similar to that of the control at the end of the treatment, the effluent seems to be safe for release into the environment, potentially rendering this treatment suitable for industrial application. 相似文献
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泵站树状给水管网流量具有随机性,而这种随机性变化会直接影响管网的建设费用和动力费用.针对这-特点,应用随机规划原理,建立泵站树状给水管网机会约束模型,编写基于随机模拟的遗传算法程序求解该模型.机会约束模型能较客观地反映该管网的实际工况,使优化设计结果更符合实际. 相似文献
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城镇化是推动我国经济社会发展的重要动力,在高速发展的同时,带来大量污染排放,威胁乡村环境质量与可持续发展。在对乡村生态环境问题剖析的基础上,从战略、实施、方式等层面探索解决思路,围绕科学规划、发展方式、基础建设、管理机制、宣传教育等方面分析关键点,加强乡村环境保护,保障城镇化建设健康发展,为促进农村农业持续发展提供持久动力。 相似文献
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阐释了信息产业专门化街区的内涵,结合对合肥市黄山路信息产业专门化街区构成要素的分类及其邻近度的分析,分别从空间结构演化、景观演化、功能演化三方面阐述了合肥市黄山路由"电子一条街"向"信息产业专门化街区"的总体演化阶段,探讨了信息产业专门化街区的未来发展趋势。 相似文献
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Günay Kocasoy 《Environmental management》1989,13(4):469-475
The increase in the number of tourists visiting a coast is desired by most of the countries for economic reasons. However, this increase in tourism may cause pollution of the sea. This can be only avoided by proper planning and by predicting the carrying capacity of the coast in terms of sea pollution. This is especially important for developing countries where part of the wastewater is discharged without any treatment into the sea.In the present study the beaches were classified according to their use — and consequently the amount of waste discharged into the sea — into four groups: (1) coasts that are used only for swimming and recreational purposes; (2) coasts used simultaneously for dwelling, swimming, and recreational purposes; (3) coasts along which only dwellings exist; and (4) natural and man-made harbors, i.e., coasts used as shelters. During the survey,40,320 observations were made between December 1985 and February 1988 to determine the effect of the number of tourists on seawater quality. The results obtained were analyzed by a multilinear regression program to obtain an empirical equation giving the extent of the sea pollution in terms of coliform concentration as a function of population density and some other environmental factors.The equations derived in this study enable the determination of the carrying capacity of a beach in terms of pollution as well as the expected degree of pollution corresponding to a given population density. Furthermore, it allows the prediction of the extra carrying capacity that can be obtained by improving the waste-disposal conditions. 相似文献
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燃煤二氧化硫控制技术应用概况 总被引:1,自引:0,他引:1
由燃煤引起的二氧化硫污染已成为大气环境中最主要的污染因子。为解决这个问题,我国结合国外的技术成果,进行了各种脱硫技术的研究。介绍了各种治理技术应用情况,并结合实际经验对其中应注意的问题给予评述。 相似文献