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本文研究了缓蚀剂R、添加剂C及温度对化学清洗的影响,并介绍了化学清洗的原理、炼钢用感应炉冷却系统化学清洗的操作程序和控制方法。 相似文献
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煤气压缩机循环冷却水系统结垢处理 总被引:1,自引:0,他引:1
济钢能源动力厂煤气管控中心压缩机组循环冷却水系统管道内壁结垢严重,影响了煤压机的运行效率。通过投加有机复合化学清洗剂,对该系统进行不停车情况下的杀菌剥离、化学清洗、渗透侵润除垢、预膜等清洗工作,取得了较理想的清洗效果。 相似文献
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本文介绍了CENTAC空压机空气冷却器的结构形式,冷却水的循环过程,结垢的产生原因,化学清洗的技术准备,技术要求,技术方案及技术操作规定,重点阐述了空气冷却器结垢的产生原因及其危害,为化学清洗提供可靠科学依据的铜试片、密封胶圈、冷却水水质及垢质等试验结果;复合清洗剂的构成及配制以及化学清洗过程中的操作注意事项。今年8月2日应用本钢复合清洁剂对CENTAC空压机空气冷却器进行化学清洗,达到预期的目的,取得令人满意的效果,该项化学清洗技术为设备清洗开创了新的空间。 相似文献
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介绍了马钢第一烧结厂石灰回转窑余热锅炉化学清洗的全过程,并着重叙述了锅炉结垢的危害,以及化学清洗的工艺条件、过程控制和清洗效果。 相似文献
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概述了常用的管道清理技术的特点,针对双流法碱液套管预热器的结构特点,选择化学方法对其结垢进行清洗,通过试验确定了清洗剂的配方。介绍了清洗方案、控制条件及清洗效果。 相似文献
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脱硫尾渣中硫酸铵及锰离子的洗涤回收 总被引:2,自引:0,他引:2
以自来水为洗涤剂,采用间歇式逆流二级的洗涤方式对软锰矿浆烟气脱硫与电解金属锰循环工艺中所产生的尾渣中的硫酸铵及锰离子进行洗涤回收。研究不同的洗涤比例(自来水与尾渣的质量之比)及洗涤时间对硫酸铵铵及锰离子洗出率的影响。实验结果表明,洗涤时间达到2min后洗涤过程即可平衡,控制洗涤比例在4:1~1:4之间,锰离子洗出率可达97.7%-69.7%,硫酸铵洗出率可达97.5%~69.2%,由此可知洗涤效果主要受洗涤比例的影响,同时确定最佳洗涤比例为4:3.此时锰离子的洗出率为91.0%,硫酸铵的洗出率为91.9%。 相似文献
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The effect of various hand washing regimens on transfer of bacterial contaminants from the hands to a hydrogel contact lenses was evaluated. Each of 47 subjects performed 5 different hand washing procedures, and then handled a new, sterile hydrogel contact lens. The lenses were cultured to determine colony-forming units (CFUs) and microbial identity. Median CFUs on lenses handled after washing with water, soap and water, or soap and water followed by towel drying were higher than the median CFU for lenses handled after no hand washing. The median CFU for lenses handled after soap and water washing followed by an alcohol wipe was not different from the no washing group. The majority of the contaminants were identified as Staphylococcus epidermidis. These results show that ordinary hand washing alone does not decrease, and may even increase, the amount of contaminants transferred from the hands to a hydrogel lens. Use of an alcoholic wipe after hand washing reverses this effect. Hand washing is still recommended in contact lens hygiene for removal of more pathogenic contaminants. 相似文献
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随着阴极铜产品质量要求越来越严格,技术人员对影响阴极铜质量的因素进行分析,最终找到了导致阴极铜板面附着酸性杂质的原因。技术人员通过对剥片洗涤机组增加二次洗涤系统,自动夹边条校边装置,优化一次洗涤系统等设备改造,同时规范了工艺操作过程,明确了对喷嘴和洗涤水的清洁要求,通过实践的开展有效地避免机组洗涤后的阴极铜板面附酸的现象,有力地提升了阴极铜产品质量。 相似文献
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本文介绍了宝钢205Omm热轧机精轧机组CVC液压系统利用系统本身设备采用高压大流量冲洗新工艺,在提高冲洗精度、缩短冲洗时间和降低劳动强度等方面都取得了较好的效果。 相似文献
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A Golz A Netzer B Angel-Yeger ST Westerman LM Gilbert HZ Joachims 《Canadian Metallurgical Quarterly》1998,119(6):695-699
The use of washing machines was investigated in two remote Aboriginal communities in the Anangu Pitjantjatjara homelands. The aim was to look both at machine reliability and to investigate the health aspect of washing clothes. A total of 39 machines were inspected for wear and component reliability every three months over a one-year period. Of these, 10 machines were monitored in detail for water consumption, hours of use and cycles of operation. The machines monitored were Speed Queen model EA2011 (7 kg washing load) commercial units. The field survey results suggested a high rate of operation of the machines with an average of around 1,100 washing cycles per year (range 150 and 2,300 cycles per year). The results were compared with available figures for the average Australian household. A literature survey, to ascertain the health outcomes relating to washing clothes and bedding, confirmed that washing machines are efficient at removal of bacteria from clothes and bedding but suggested that recontamination of clothing after washing often negated the prior removal. High temperature washing (> 60 degrees C) appeared to be advantageous from a health perspective. With regards to larger organisms, while dust mites and body lice transmission between people would probably be decreased by washing clothes, scabies appeared to be mainly transmitted by body contact and thus transmission would be only marginally decreased by the use of washing machines. 相似文献
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大极板高纯阴极铜动态喷洗技术的研究与应用 总被引:1,自引:0,他引:1
黄湘 《有色冶金设计与研究》2005,26(3):5-7
分析了阴极铜的洗涤难点,介绍了大极板电铜机组在研制开发中,应用动态喷洗技术,提高阴极铜洗涤质量的研究工作及其实效。 相似文献
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制氧机冷却循环水系统不停车在线清洗预防空分带水的技术应用 总被引:1,自引:0,他引:1
介绍了制氧厂冷却循环系统在线清洗时空分易带水的原因,有效处理了清洗中出现的异常情况,并对各清洗阶段清洗终点进行了判断和效果评定。 相似文献
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贾明镜 《金属材料与冶金工程》2010,38(4):25-28,31
热镀锌清洗通常包括碱液刷洗和电解脱脂,它可清除冷轧钢板表面上的铁屑和油污等杂质,对生产热镀锌产品的表面质量和镀层结合力的影响至关重要。热镀锌机组清洗段包括碱液喷淋洗、碱液刷洗、电解清洗、热水刷洗、热水漂洗和干燥,可以把带钢表面的残油和残碳总量控制在20 mg/m2以下,能达到热镀锌板对清洗质量的要求。 相似文献