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浙江省电力行业燃煤锅炉烟气脱硫工程已经起动,有杭州热电厂220t/hCFB锅炉一台、宁波中华纸业有限公司动力中心220t/h炉二台、镇海电石热电厂三台,都采用炉内喷钙技术,它们的脱硫粉剂都需要一定的级配粒径组成。杭州热电厂须符合美国奥斯龙公司技术所提供的曲线要求生产脱硫粉剂,杭州西湖矿粉有限公司就是为杭州热电厂新建循环流化床CFB锅炉脱硫工程提供所需粉剂。新建的民营企业,利用大学的高科技,开发容积为1200L高强度振动棒磨机,代替进口粉磨机,如四川内江热电厂用美国7572型棒磨机;镇海石化电厂与宁波中华纸业有限公司用美… 相似文献
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石化热电厂NID脱硫工艺 总被引:1,自引:0,他引:1
结合某石化热电厂烟气脱硫工程,本文详细介绍了NID技术各工艺系统和主要设备选型。锅炉烟气脱硫后,SO2和粉尘排放大幅降低,达到国家第5时段排放标准,并有显著的经济效益。文章建议采用电石渣作为脱硫剂,可降低运行成本。 相似文献
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一、循环流化床锅炉烟尘的基本特点循环流化床锅炉(CirculatingFluidized-BedBoiler,简称为CFB)燃煤适应性强,炉内喷钙脱硫率高达90%以上,由于炉内温度较低,NOx很少形成,排放可基本达标。另外,它能在低负荷下正常运行,特别适用于中、小型机组、热电厂和调峰机组使用。正因为如此,它被称为环保节能型新式锅炉。目前世界上正在大力推广应用。但由于炉内掺钙脱硫而较大幅度地降低了烟气中SO2的含量,同时烟尘中钙的化合物含量大量增加,这都导致烟尘比电阻增高。由于掺钙和脱硫,增加了大量的粉尘,使得烟气的含尘量大幅度地… 相似文献
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一、NID法与传统钙法脱硫工艺比较我国两控区内地、市二级的二氧化硫综合防治规划已基本完成,即将进入实施阶段,众多大型锅炉特别是电站的烟气脱硫将是一场攻坚战,对规划目标的完成起到举足轻重作用。十余年来,电力部门为寻找经济适用的脱硫技术花了大量人力。物力,但自行开发的磷铵法等还在中试阶段不能应急;工业规模的二套湿法、二套半干法都是钙基抛弃法,大量脱硫渣令电站望而生畏;化工系统的三套简易湿法,只是用未脱硫的热烟气掺脱过硫的冷烟气来抬升高度;炉内喷钙虽免了喷雾器,但又必需加比脱硫塔还大的防锈增湿塔,使投… 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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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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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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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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