共查询到20条相似文献,搜索用时 78 毫秒
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国外烟气脱硫脱硝技术开发近况 总被引:21,自引:3,他引:21
综述了80年代下半叶以来国外正在开发的一些脱硫脱硝工艺。包括NOXSO、SNOX、DESONOX、E-SOx、尿素、Coolside、LBL、phoSNOX,海水,EL-sorb等新方法,目前使用最多的烟气脱硫技术脸是以石灰/石灰石为吸收剂的各种改进技术。 相似文献
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某化工总厂脱硫工段原有4台LR80型罗茨鼓风机用来输送半水煤气,后因生产能力扩大,罗茨鼓风机房移位,新增加1台R603型罗茨鼓风机,其风量为200m3/min。新风机投运后噪声很大,且随管道辐射到厂房外,噪声的声压级高达98dB(A),使得整个合成氨... 相似文献
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意大利艾索格玛公司〔ISOLGOMMA〕生产隔声卷材和隔振板材已有30余年历史。最近上海得善贸易有限公司取得了该公司在中国的独家代理权,并于2000年9月22日在上海召开了产品介绍会,会上意大利工程师讲解了该种材料的性能、规格、用途、特点等。新型隔声卷材和隔振板材的基料是被打碎的废橡胶轮胎,再添加软木、树脂、乳液聚脂化合物等,制成R型和S型毡状卷材以及M型和MAV型板状块体,可广泛应用于建筑物、道路、地铁、铁路等方面的隔声、隔振设备。R型隔声卷材可以铺放在结构层地面上,不需要钉子和胶水粘结,可降低噪声24~26分贝… 相似文献
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大型燃用贫煤和烟煤锅炉NOx排放特性的研究 总被引:6,自引:0,他引:6
针对两台分别燃用贫煤和烟煤的300MW锅炉(均采用WR型燃烧器)NOx排放特性,分析辽两台锅炉在满负荷和低负荷时NOx排放量的差别,并指出了燃用贫煤的锅炉比燃用烟煤的锅炉NOx排放量高的原因。 相似文献
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在分析了电站锅炉送风机主要噪声源及频谱、噪声特性的基础上,应用噪声控制理论,设计并实施了噪声控制方案,达到了预期的治理效果。电站锅炉风机及管路系统均为中低频噪声,其特点为振动和空气流体混合噪声,噪声衰减慢,传播远。SDR型阻尼吸隔声材料为多层复合分子材料,内设不同孔径、孔型的声学结构。适用于风机、管道、球磨机等壳体结构的减振降噪。使用阻尼胶粘剂粘贴在声源设备壳体表面,辅加吸音棉材料和彩钢外壳约束固定。主要应用于电站锅炉一次风机、吸风机、送风机及其管道减振降噪方面。该技术的特点是在风机和管道等声源表面形成一个吸隔声体,使噪声在声腔内部被吸收和隔绝对外传播。 相似文献
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介绍了中型氮肥厂造气离心风机,脱硫罗茨风机的脱碳罗茨风机的噪声特性,消声,隔声,吸声综合治理的措施和治理效果。 相似文献
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辽宁轮胎厂对动力站噪声进行分步进行治理,通过采取吸声、消声和隔声措施,使动力站的混响噪声得到了大幅度下降,达到了国家标准,取得了预期的效果。 相似文献
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Satoshi Saitoh Albrecht Melber Hiroshi Ohbayashi Satoshi Nakai Masakuni Matsuoka Masaaki Hosomi 《Journal of Material Cycles and Waste Management》2008,10(1):71-78
We discuss the use of the Schmidt graphical method to calculate the time required to heat a polychlorinated biphenyl (PCB)-contaminated
capacitor in the vacuum thermal recycling process to the processing temperature of 400°C, and we evaluate the results of the
heating time calculation by comparing the calculated values with the corresponding experimental values. The thermal conductivity
and specific heat of the insulating paper and the carbonized paper in the capacitor were unknown, so we determined their values
from experimental data obtained during the vacuum thermal recycling process. The capacitor element is a multilamination of
aluminum foil and insulating paper, so we used an equation for a multilayer plane wall to calculate the value of the thermal
conductivity. For the thermal conductivity and specific heat of the insulating paper impregnated with PCBs, we used values
calculated from the mass ratios and thermal conductivities and specific heats of the individual materials. In addition, the
physical properties vary according to the treatment because of the evaporation of PCBs and the carbonization of the insulating
paper, so we modified the values of the thermal conductivity, specific heat, and density at the boiling point of the PCB and
the carbonization point of the insulating paper before performing the calculations. Our calculated heating times were almost
the same as, or were above, the experimental values, so we concluded that our method can be used as a simple calculation of
the heating time. 相似文献
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《Waste management & research》1989,7(3):249-258
Accident risks in waste treatment were studied at five sanitary landfills, two plants using mainly manual sorting and one incineration plant in southern Finland. Work hazards were detected by means of safety analysis. In addition, accident statistics were used. Work safety problems were found at all work stages. At the sanitary landfills, the major safety problems were posed by operation of the compactor or other machinery and by hazardous wastes. In waste sorting, common problems are odour and dust, lacerations and back injuries. Falling into the waste compactor or paper silos may cause fatal injury and its probability was also high. The highest noise level measured was 97 dB(A). In waste incineration, the most serious hazards were caused by fires, clogging of the funnels and cleaning of the grate. Most deficiencies in work safety can be remedied at a moderate price. The corrective measures involve technical solutions, working methods, supervision, training and occupational health services. The accident rates for workers in the four waste treatment plants were slightly lower than the average for industry. 相似文献