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1.
电除雾器是硫酸生产过程中净化烟气的关键设备。目前,电除雾器的阳极管材质主要有铅和塑料两种。20世纪80年代,贵溪冶炼厂从日本引进了一套卧式水平流板式导电玻璃钢电除雾器。随后,自行研制开发了立式垂直流方管型导电玻璃钢电除雾器。我厂新建的蜂窝型导电玻璃钢电除雾器,既具有板式和方管式电除雾器沉淀极内、外表面都被利用的特点,又具有圆管式较均匀的气流分布,其电场情况优于方管型。现将C.F.WEP-272蜂窝型导电玻璃钢电除雾器的结构及运行情况介绍如下。  相似文献   

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介绍了NWESP的研制、技术创新及在脱硫脱硝深度净化中的应用。为确保装置在高气速下高效稳定运行,设计采用了电晕极线双向固定框架、蜂窝状排列导电玻璃钢阳极管和改良型高效芒刺电晕极线,引入了连续冲洗雾粒凝并技术,并改进了绝缘保护系统。实际运行情况表明效果良好。  相似文献   

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参照美国标准ASTM C581,采用加速试验的方法对拉挤、手糊、缠绕工艺生产的导电玻璃钢管样块,在质量浓度为50%、温度为80℃的硫酸水溶液中进行28 d的浸泡试验,并周期性地测试其弯曲强度和弯曲模量,基于弯曲强度保留率指标对不同工艺生产的阳极管的耐腐蚀性能进行研究。  相似文献   

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综述了近年来国内外固体氧化物燃料电池复合导电性能(MIEC)单相氧化物阳极材料的研究进展。阐述了钙钛矿结构、立方萤石结构以及其它诸如烧绿石结构的单相氧化物阳极材料的导电性能以及应用于电池阳极的发电性能。指出了阳极材料研究亟待解决的问题及发展方向。  相似文献   

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介绍了38DD350型离子膜电解槽复极元件的结构。提出各种情况下复极元件的修复方法:重涂阴极、阳极;修补阴、阳极网断丝;修补复极元件内漏;修补导电柱的损坏;修补密封面;修复进出料管腐蚀仪及处理密封玻璃胶和阴极支撑网锈垢。  相似文献   

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本文结合玻璃钢井管的诸多优点及实际项目情况,较为详细地介绍了玻璃钢井管的设计、材料选择、接头方式、制作工艺等,有益于玻璃钢井管的应用推广。  相似文献   

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导电塑料缆性阳极研制   总被引:2,自引:0,他引:2  
介绍导电塑料缆性阳极的制备及其性能,研究不同导电炭黑,加工助剂,其它助剂及其用量对阳极电缆导电塑料包覆层性能的影响。结果表明,柔性的导电塑料层具有良好的力学性能、耐化学药品性及导电性,能保护铜芯免受腐蚀并将电流传导至被保护物;所研制的导电塑料缆性阳极能满足外加电流阴极保护工程的需要。  相似文献   

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石油专用玻璃钢的质量检验标准及其评价技术介绍   总被引:1,自引:0,他引:1  
本文从玻璃钢管的实际应用出发,主要介绍了美国石油专用玻璃钢管的系列标准、方法及内容,简要分析和讨论了石油专用玻璃钢管的质量检验特点及其与钢管检验的不同之处,概述了针对油田现场工况环境进行玻璃钢管质量评价的必要性及其性能评价技术,最后提出了石油专用玻璃钢管检测的有关建议。  相似文献   

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这种垢的防止装置包括:一个复合电极,由按照水流过的方向安装的阳极和阴极组成,水流过阳极和阴极之间的空间:填充碳材料导电颗粒的床位于阳极一侧,填充非导电颗粒的床位于阴极一侧,导电和不导电颗粒的界限通过水流方向与阳极隔离。  相似文献   

10.
由地质部水文地质技术方法研究队、建材部玻璃钢研究所和四季青玻璃钢厂联合主办的玻璃钢井管、滤水管及其他玻璃钢制品展销会于1980年1月21日至23日在北京召开。 参加这次展销会的有来自全国18个省市、6个部委的53个单位105名代表。会议期间,代表们听取了关于玻璃钢井管、滤水管的研制过程和使用情况的报告以及销售价格的介绍;参观了四季青玻璃钢厂和四季青玻璃钢厂展出的各种规格的玻璃钢井管、滤水管及其他玻璃钢制品。  相似文献   

11.
Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.  相似文献   

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Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.  相似文献   

16.
收集了2005年7月~2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、通用热固性树脂(酚醛、聚氨酯、不饱和树脂、环氧树脂)、特种工程塑料(聚苯硫醚、液晶聚合物、聚醚醚酮)的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。  相似文献   

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收集了2007年7月~2008年6月世界塑料工业的相关资料,介绍了2007~2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.  相似文献   

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Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.  相似文献   

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Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.  相似文献   

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