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小麦制粉厂的新建是一个系统工程。从项目的可行性分析,到选址、选择设计院进行工艺、土建、给排水及电气等设计,是一个很复杂的系统工程。土建完成后,现场工艺设备安装调试也是一个至关重要的工序,安装调试是从土建施工开始起,从工艺预埋件的预埋到最后的调试成功投产为止。下面是本人参加多次的现场安装调试过程中的一些心得,与同行共享。 相似文献
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ABB项目管理技术在华泰PM12电气控制系统调试中的应用 总被引:1,自引:1,他引:0
在山东华秦PM12纸机前期的安装过程中,由于华泰与纸机主体设备供应商配合密切,整个项目的安装工作提前完成,因此华泰寻求提前投产的可行性。由于ABB提供了电机控制中心(MCC)、传动和自动化系统,因此该项目能否提前投产,关键就在于ABB电气控制系统的调试。ABB运用先进的项目管理技术,缩短了调试时间,使得项目提前投产。 相似文献
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8月17日上午,记者来到江苏博汇纸业有限公司二期项目现场,采访了项目的进展情况。目前,该项目的土建工程已基本结束,进入安装调试阶段。据公司总经理郑先山介绍,目前主机设备安装进度已达到50%,将在10月安装结束。电器自动化将在11月安装结束,12月进行整体的单机和联动调试。项目计划2019年投产。二期工程全面投产后,包括一期产能在内,博汇的白卡纸市场份额将位居世界前三行列,产品远销美国、加拿大、英国、法国、挪威等地。 相似文献
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介绍了压缩制冷系统的原理和发展现状.汇总了系统常见的各类故障,分析了故障原因并介绍了解决方法.总结了实际运转中故障应对的经验,并提出了压缩制冷系统运行优化控制的建议. 相似文献
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分析了用丙纶热轧非织造布生产线生产涤纶非织造布时所面临的一系列技术工艺问题,提出了对其生产设备的改造方案,并介绍了在梳理机针布,导热油箱和润滑系统上的一些改造措施。 相似文献
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Three main types of rodent filth (rodent excreta pellets, gnawing, and nesting material) are described and identification procedures are listed. Suspect excreta pellets that may be encountered in foods from various animals are described in detail and presented in a dichotomous key for comparison and identification. The physical features associated with the excreta pellets (color, shape, size, weight, surface, and matrix composition) are listed for the insects and animals found in the key. Rodent gnawing and rodent nesting materials are defined and the importance of the paired incisor marks, scalloping along edges and the appearance of the building materials are described. The importance of urine, rodent excreta, hairs and/or parasites when defining nesting material, are discussed, along with the key elements used to recognize the gnawing direction by the rodents. Historical data on rodents and health/safety concerns when handling rodent filth exhibits are addressed. 相似文献
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Methods are described for the extraction and quantitation of endogenous barley thiols and disulphides. Thiols and disulphides, together with added internal standards, are extracted from ground barley tissues (embryos or degermed grains) and the thiols in the extract are trapped on columns of beaded p-hydroxymercuribenzoyl-agarose (p-HMB-agarose). After elution they are derivatised with 5,5′-dithiobis (2-nitrobenzoic acid) and the derivatives are separated and quantified by hplc. The disulphides in the effluent from the p-HMB-agarose column are collected on a silica-based ion exchange material. After elution they are reduced to thiols and, after derivatisation, they are assayed by hplc. Dry barley embryos contain substantial quantities of glutathione, progressively lesser quantities of oxidised glutathione, cystine and cysteine and traces of γ-glutamyl cysteine and cysteinyl glycine. 相似文献
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关于发展我国生态纺织品的建议 总被引:13,自引:7,他引:6
介绍了国际生态纺织品的标准动态,OKo-Tex Stiandard100标准的主要特点以及规定的主要检测项目与有害物质,并按照国际标准,分析了我国纺织工业存在的主要差距,并就此提高出发展我国生态纺织品的措施。 相似文献
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制浆造纸废水生化处理工程应用 总被引:1,自引:0,他引:1
对几种制浆造纸废水采用的生化工艺进行了分阶段说明,指出设计中常用的参数以及实际运行中的注意事项。对好氧生化工艺中关键的曝气设备进行了比较和分析。 相似文献
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Susmit A. Ilame 《Critical reviews in food science and nutrition》2015,55(7):964-987
Fruit and vegetable juices are used due to convenience. The juices are rich in various minerals, vitamins, and other nutrients. To process the juices and their clarification and/or concentration is required. The membranes are being used for these purposes. These processes are preferred over others because of high efficiency and low temperature. Membranes and their characteristics have been discussed in brief for knowing suitability of membranes for fruit and vegetable juices. Membrane separation is low temperature process in which the organoleptic quality of the juice is almost retained. In this review, different membrane separation methods including Microfiltration, Ultrafiltration, and Reverse osmosis for fruit juices reported in the literature are discussed. The major fruit and vegetable juices using membrane processes are including the Reverse osmosis studies for concentration of Orange juice, Carrot juice, and Grape juice are discusses. The Microfiltration and Ultrafiltration are used for clarification of juices of mosambi juice, apple juice, pineapple juice, and kiwifruit juice. The various optimized parameters in membranes studies are pH, TAA, TSS, and AIS. In this review, in addition to above the OD is also discussed, where the membranes are used. 相似文献
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对归纳*-半环和弱归纳*-半环进行更深入的研究.通过引入UF-归纳*-半环和UF-弱归纳*-半环的定义,给出了这两类半环的性质,讨论了它们之间的关系.并研究了这两类半环上的形式幂级数半环与矩阵半环,获得了一些结果.所得结果丰富了*-半环并推广*-半环上的一些重要理论. 相似文献