电除尘器增效技术改造

通过对民除尘器振打结构、清灰机理和小分区供电技术的分析,采用顶部电磁锤振打式电除尘器技术对机械旋转挠臂锤振式电除尘器进行技术改造,可大大提高提高设备运行可靠性,改善除尘效率。     

BEL型双维振打式电除尘器的研发

文章介绍了一种顶打和侧打相结合的BEL型双维振打式电除尘器，该产品将电除尘器两种主要的振打清灰技术结合，适用于老除尘器的提效改造及新除尘器的制造等。     

振打扁形滤袋除尘器的创新及经济适用性

介绍了高效振打扁形滤袋除尘器的独有优势,并通过与现在广泛使用的脉冲反吹圆袋除尘器对比,指出振打扁形滤袋除尘器占地少、清灰和运行耗能低,各项技术经济指标先进。     

声波清灰系统在电除尘器的应用及分析

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。     

电晕极振打的理论模型及振动加速度的分析研究

电晕极是静电收尘器主要工作部分,其振动加速度的大小与直接影响收尘器的工作效率。本文建立了电收器电晕极振打清灰系统的理论模型,并对电晕极振打加速度进行了分析,研究的清灰系统中振动架质量、支承弹簧、电晕极、及拉紧弹簧等式构件对电晕极振动加速度的影响。提出了提高旋伞静电收尘器电晕极清灰效果的措施。     

高效电除尘在赤铁精矿烧结工艺中的应用

赤铁精矿烧结工艺粉尘由于其特殊性，治理难度较大，东鞍山烧结厂通过与科研单位进行工业试验研究及长期生产实践，掌握了烧结粉尘特性并探寻到与其适宜的高电压、宽间距、合理的极配型式与振打方式的高效静电除尘，实现了烧结工艺粉尘完全达标与治理设施稳定运行。     

不停炉条件下除尘器电场检修策略研究

随着国家对燃煤发电机组烟尘排放标准的日趋严格,电除尘器各电场的出力情况已成为制约机组实现烟尘达标排放的关键因素之一。文章介绍了某电厂在#2机组运行中处理电除尘器内部电场阴极绝缘击穿的过程,分析了引起电场运行中绝缘击穿的主要原因,结合顶部振打除尘器的结构,论证了在不停炉条件下处理电除尘阴极振打锥形绝缘轴击穿的可行性,根据除尘器顶部保温箱的特点制定了具体可行的实施方案,通过在线处理电除尘器故障电场绝缘,取得了良好效果,并提出了在阴极振打绝缘轴上方加装防水伞裙等防范电场阴极绝缘击穿再次发生的预防措施和优化方案。     

对声波助清技术在布袋除尘器中应用的认识

布袋除尘器发展过程主要体现在两个方面：一是滤料材质的发展；二是清灰方式的发展。声波助清灰是以声波清灰为辅，其它清灰方式(如反吹、振打等)为主，使粉尘易于清除的技术。本文在介绍了声波助清灰工作原理的基础上，浅析了声压级和频率对清灰效果的影响、声波助清灰技术中的一些关键问题，最后又提出了自己的几点看法。     

结合断电振打的BE5块板结构研究与应用

基于电控技术的发展,进行机电一体化技术研究,结合断电振打的应用,提出了BE5块板组排结构;通过对BEH型电除尘器5块板结构一系列的研究和验证,证明应用结合断电振打技术的BE5块板结构是可行的,能有效降低成本,保证性能,提高市场竞争力。     

机械冲击振打扁袋和脉冲圆袋除尘器性能对比

对脉冲对反吹圆袋除尘器和机械冲击振打扁袋除尘器进行了数字计算和分析对比,显示前者落后,后者先进,并对空气净化除尘及可预计的节能降耗目标进行了粗估。     

基于电动振动台的强化试验剖面参数计算与控制

在进行组件级产品振动试验时,传统试验方法存在产品的低阶振动模态激发能力较弱,试验结果重现性差,而采用低频特性优良的电动振动台及其控制仪进行应力加载则可克服RS机的缺陷.本文给出了基于电动振动台的随机振动试验剖面的数学描述,推导出应力量级和试验应力谱参数的解析关系,进而导出便于工程应用的剖面参数计算方法,并讨论了应力剖面的控制.最后在某导弹发射控制盒组件的振动强化试验中进行了应用,验证了该方法的有效性.     

栅控行波管栅网振动特性分析及材料优化

栅网是栅控行波管中抗振性能最薄弱的部件,其振动特性的分析尤其重要。本文采用ANSYS分析软件,构造了栅网的有限元模型,提取了栅网结构的固有频率和模态振型,并与模态试验结果进行比较和修正。在此基础上,对栅网材料进行了优化设计,对当今行波管生产单位选用新型的栅网材料具有参考作用。     

我国噪声与振动控制行业2012年发展综述

综述了2012年我国噪声与振动控制行业的发展环境以及行业的生产经营情况;阐述了行业总体技术进展、新技术的开发应用概况,以及行业市场特点及重要动态;分析了行业主要骨干企业的发展情况及企业的国内国际竞争力状况;针对行业发展中存在的主要问题,提出了解决对策和建议,并对行业的发展进行了展望。     

A nanocomposite of CoFe2O4-carbon microspheres for electrochemical energy storage applications

A carbon/CoFe₂O₄ composite was synthesized by precipitation method. The morphology of the composite was analyzed using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, Fourier Transform Infrared Spectra, and vibrating sample magnetometry. The electrocapacitive behaviors of the composite has been studies by cycle voltammogram and galvanic charge/discharge. The size of the nanoparticles carbon composite of CoFe₂O₄ was uniform and 209 nm. Due to a high percent of carbon, electrochemical measurements showed electrical double layer mechanism. Specifically, the carbon/cobalt ferrite electrode exhibited high specific capacitance of 102.5 F g^?1 at a current density of 0.16 A g^?1, and high rate capability with 30% retention of capacitance even up to 20 A g^?1, and excellent cycling stability with 81.5% retention of the initial capacitance after 6000 charge/discharge cycles, supporting that the carbon cobalt ferrite composite electrode could be a potential candidate for supercapacitor application.     

Catalytic degradation of toxic organic dye using an aluminum-doped Cu0.4Zn0.6-xAlxFe2O4 (x = 0.0, 0.2, 0.4, 0.6) spinel ferrite in a photo-Fenton system

Catalytic activity of spinel ferrite in breaking down toxic dye materials are promising due to their uniqueness. In this study, aluminum-doped copper zinc ferrite, Cu_0.4Zn_0.6-xAl_xFe₂O₄ (x = 0.0, 0.2, 0.4, 0.6), a catalyst for toxic dye degradation is synthesized through chemical co-precipitation route. The formation of the spinel ferrite catalyst is initially confirmed by Fourier transform infrared spectra, which shows the frequency of metal-oxygen bond vibration at 539 and 427 cm⁻¹ attributed to the tetrahedral and octahedral sites respectively. Higher intensity sharp peak of X-ray diffraction for (311) plane is the evidence for the phase purity and the formation of spinel ferrite. The crystallite size is found to decrease with the increase of Al³⁺ ion. The surface structure of the obtained particles is investigated using a scanning electron microscope. Analyses of the material's magnetic characteristics using a vibrating sample magnetometer (VSM) revealed that it is, in fact, a soft magnet, as evidenced by the loop of its hysteresis, which is narrow. The catalytic degradation of methylene blue dye under the mechanism of the photo-Fenton process is studied with the obtained spinel ferrites and the result is found to be as high as 96.5%. The process follows pseudo-second order kinetics and the Langmuir isotherm.     

BOOK REVIEWS

Book reviewed in this article:
The Coastline, R. S. K. Barnes, editor
Power Plant Siting, John V. Winter and David A. Conner.
Environmental Data Management, Carl H. Oppenheimer, Dorothy Oppenheimer, and William B. Brogden, editors.
Water Management in England and Wales, Elizabeth Porter
Measurement of Dissolved Oxygen, Michael L. Hitchman.
Processing and Synthesis of Hydrogeological Data, Alexandru Gheorghe.
California Water: A New Political Economy, Merrill R. Goodall, John D. Sullivan, and Timothy De Young.
Finite Elements in Water Resources, Proceedings of the 1st International Rmposium on Finite Elements in Water Resources, 1976, W. G. Gray, G. F. Pinder, and C. A. Brebbia, editors.     

BOOK REVIEWS

Books reviewed in this article:
Satellite Hydrology, Morris Deutsch, Donald R. Wiesnet, and Albert Rango (Editors). American Water Resources Association, Minneapolis, Minnesota. 1981. 730 pages. $85.00.
Land Into Water - Water Into Land, Nelson M. Blake. University Presses of Florida, Gainesville, Florida. 1980. 344 pages. $19.95.
California Water Planning and Policy: Selected Issues, Ernest Engelbert (Editor). Water Resources Center, University of California. 1979. 252 pages. $5.00.
The Infrared Handbook, William Wolfe and George Zissis (Editors). IRIA Center of the Environmental Research Institute of Michigan.
Scientific, Technological and Institutional Aspects of Water Resource Policy, Yacov Y. Haimes (Editor). AAAS Selected Symposium 49. Westview Press, Washington, D.C. 1980. 128 pages.
Environmental Impact Analysis: A New Dimension in Decision Making (2nd ed.), R. K. Jain, L. V. Urban, and G. S. Stacey. Van Nostrand Reinhold Company, New York, New York. 1981. 393 pages. $27.50.
A Policy Approach to Political Representation: Lessons From the Four Comer States, Helen M. Ingram, Nancy K. Laney, and John McCain. A Resources for the Future Book. Johns Hopkins Press. 1981.
Water Quality in Catchment Ecosystems, A. M. Gower (Editor). John Wiley and Sons, Somerset, New Jersey. 1980. 335 pages. $50.00.
Seepage and Groundwater Flow, K. R. Rushton and S. C. Red-shaw. John Wiley & Sons, Ltd., Chesire, England. 1979. 339 pages. $45.00.
Environmental Biology for Engineers - A Guide to Environmental Assessment, George Camougis. McGraw-Hill, Inc., New York, New York. 1981. 214 pages. $20.00.     

Book reviews

Ecological Politics in an Age of Risk. Ulrich Beck, translated by Amos Weisz, 1995 Cambridge, Polity Press, first published Germany 1988. ISBN 0 7456 077632, hb £39.50; ISBN 0 7456 13772, pk £12.95

Environmentally Sustainable Business: a local and regional perspective. Peter Roberts, 1995, London, Paul Chapman. ISBN 1 85396 240 6, price not given

Methods of Environmental Impact Assessment. Peter Morris & Riki Therivel (Eds) 1995, London, UCL Press, 378 pp. ISBN 1 85728 117 9, hb £45.00; 1 85728 118 7, pb £14.95

A Guide to Local Environmental Auditing. Hugh Barton & Noel Bruder, 1995, London, Earthscan, 370 pp. ISBN 1 85 383 2340, pb £18.95

Household Waste Recycling. Richard Waite, 1995, London, Earthscan, ISBN 1 8538 3 2421, hb £29.95

A Seed in Time: Proceedings of the 3rd International Conference on Urban and Community Forestry. Forestry Commission, 1994. ISBN 0 885 38 328 3, £9.50 inc p&p (Copies available from: Marcus Sangster, Forestry Commission, 231 Corstorphine Road, Edinburgh EH12 7AT)

Environmental Policy in New Zealand: the politics of clean and green? Tom Buhrs & Robert Bartlett, 1993, Auckland, Oxford University Press viii + 192 pp.

Green Politics. Stephen Rainbow, 1993, Auckland, Oxford University Press xv + 106 pp.

The Future of Community Lands: human resources. E. Ndione, P. DeLeener, M. Ndiaye, P. Jacolin & J.-P. Perier, 1995, London, Intermediate Technology, 236 pp. ISBN 1 339 2480, £14.95     

Plant growth and uptake of mineral elements at an oily sludge landfarming site in Kuwait

Oily sludge landfarmed in Kuwait soil contains higher concentrations of certain elements than that of the untreated of, soil, e.g. S, Cu, Cr, Zn, Pb, Ni, Mo and V. The growth and elemental content of three different plants grown on a sandy soil previously treated with different concentrations of oily sludge were studied. Tested plants differed in their response to landfarmed oily sludge; ryegrass was the least affected followed by oats, then barley. Uptake of elements differed both qualitatively and quantitatively between test plants. In barley, Zn increased in plants cultivated in soil treated with oily sludge, whereas other metal concentrations were reduced or not affected, namely, Cu, Pb, Ni, V. The uptake of P was greater in plants grown on treated soil compared with those on untreated soil, whereas Na, Ca, K, were either reduced or unaffected. In oats, Zn, Ni, Cu, Pb, V, were not significantly changed. Uptakes of K, Ca, P, and Na in plants from treated soil were higher than that of the control. In ryegrass, heavy metal concentrations were either reduced or remained the same as that of the control. In all cases, concentrations of essential heavy metals and other true elements under investigation were still lower than the levels considered to be sufficient for micronutrients. Thus, the oily sludge was a source of certain micro-nutrients which were deficient in the sandy soil. Further, it appears that uptake and distribution of elements in plant tissues were both highly variable according to the plant, species, and the soil characteristics.