提高焦炉除尘系统稳定性和除尘效率的措施

莱钢焦化厂为提高除尘风机系统稳定性和除尘效率,风机轴盘材质改用铸钢,加强焊接质量,对风机叶轮镀层,改善除尘系统运行管理模式。通过采取以上措施,除尘风机故障率显著降低,运行稳定性大幅度提高,焦炉除尘效率由前期的99.46%提高到现在的99.91%。     

高压变频器在除尘风机上的应用

介绍了高压变频器在除尘风机上的应用,分析了变频器的原理、控制及应用效果。实践证明高压变频器具有降低除尘风机的电耗、稳定可靠等优点,在除尘风机的应用方面具有明显的节能效果,在除尘系统中值得推广应用。     

高炉除尘风机变频器经济运行分析

<正>1前言炼铁厂高炉炉前除尘风机已基本使用变频器调节控制除尘风量。通过按高炉出铁实际情况合适地调整除尘高压电机转速,降低除尘风机的输出功率,既能使现场除尘风量与除尘效果达到最优控制,又能进一步节能降耗,还可以减少除尘风机的运行损耗。本文总结实施措施及其效果。     

湿式除尘风机改造

SCF-6湿式除尘风机是引进英国恩加特公司技术制造的一种用于矿山井下的抽尘净化设备,实践表明,该湿式除尘风机不能很好地适应我国矿山的特点,给现场使用和维护带来一定的困难。为此,煤炭科学研究总院南京研究所和兖州矿业（集团）公司南屯煤矿对除尘风机进行了改造。改造后的除尘风机主要由风机、电机和新型湿式除尘器组成。改造中保留了原有的风机和主电机,     

汽动轴流风机冷却水串用的分析与研究

根据现场轴流风机冷却水系统的具体情况,通过二台风机冷却水的串用,降低2#风机冷却水进水温度,提高2#风机真空,并且在进口温度较低时,循环水泵由二台减少至一台,降低电耗;用控制极限碳酸盐硬度指标经验公式,判断2#风机在低循环倍率下冷却水不进行水质化学处理的可能性与条件．同时节约水资源,不增加新水消耗。     

大型高炉除尘风机变频PLC控制系统开发

某大型高炉手动控制除尘系统,控制方式和工艺需求不匹配,除尘风机处于24 h全负荷运行状态,设备系统无法适应实际生产工艺需求造成大量电能浪费。介绍了高炉出铁工艺流程和特点,分析了高炉除尘风机控制系统结构,详细论述了基于PLC变频控制系统实现除尘风机节能的关键技术。实践证明,大型高炉除尘风机变频PLC控制系统能更好地匹配工艺生产需求,保证安全、可靠、稳定生产的同时避免了能源浪费。     

汽动轴流风机冷却水串用的分析与研究

根据现场轴流风机冷却水系统的具体情况，通过两台风机冷却水的串用，降低2^#风机冷却水进水温度。提高2^#风机真空，在进口温度较低时，循环水泵由两台减少至一台，降低电耗；用控制极限碳酸盐硬度指标经验公式，判断2^#风机在低循环倍率下冷却水不进行水质化学处理的可能性与条件，同时节约水资源。     

除尘风机异常振动的诊断与消除

文章对造成除尘风机异常振动的有关因素进行了分析。通过利用声振测试技术及分析技术、测温技术诊断除尘风机的异常振动。采取提高风机叶轮动平衡水平、风机联轴器较直水平消除异常振动。保证了除尘风机的稳定运行。     

天钢120 T转炉一次除尘风机振动原因分析与改进

一次除尘风机是转炉一次除尘系统的关键设备。在使用一段时间后,一次除尘风机振动加大,直至导致连锁停机。分析了一次除尘风机振动的产生原因。通过采取重新调配供水管路、优化除尘水的喷嘴、使用陶瓷涂层技术对转子内外表面进行处理、改进叶轮冲洗水喷嘴、提高转子安装精度等措施措施,使一次除尘风机振动得到了有效的控制,满足了生产使用要求。     

除尘风机节能优化控制技术研究及应用

利用基于烟尘量计算模型的除尘风机节能优化控制方法,根据烟尘发生量采用交流变频调速装置对除尘风机的速度进行动态调节,实现除尘风机较大幅度的节能,可获得节能15%~70%的效果。     

Acceleration of Electricity Reform Brings Benefit to Big Electricity Users,Aluminum Manufacturers Can Save Costs Up to Several Hundred Million

<正>Recently the National Commission of Development and Reform again assembled experts to solicit opinions,and discussed new electricity reform program.According to information disclosed by experts attending the meeting,in the future electricity reform will undergo top-down design,possibly a     

Qinghai's Aluminum Processing Capacity to Rise at the End of the Year

正Since the release of Implementation Opinions on Carrying out‘Guiding Opinions of the State Council on Resolving Serious Production Overcapacity Conflicts’,according to the actual situation of industry,Qinghai has focused on electrolytic aluminum,cement,ironsteel(including iron alloy and silicon carbide),     

Recent Trends in China's Copper Scrap Market-Part Ⅱ

<正>2.Tianjin Scrap Metal Market In Tianjin,we mainly visited Jinghai Ziy Town scrap market and Binhai New Area’some copper scrap enterprises and enterprise using copper scrap.In Ziya we felt the coppe scrap market was particularly deserted,mos copper scrap enterprises in the town wer closed,industry insiders said in 2012 the plac here was bustling with activity.According to     

Shanghai Clearing House to Roll out Renminbi-denominated Copper Clearing Operations in Free Trade Zone

正Clearing House Financial Markets Co.,Ltd.(Shanghai Clearing House)General Manager Xie Zhong told the media recently at the briefing of the international symposium of"Reform Deepening and Mechanism Innovation of the Post-crisis Kerb Market",Shanghai Clearing House will explore the feasibility of carrying out bond business in     

Development and Application of New Materials for Copper Processing in China

正After over 60 years of developmnt,a system for RD and production of copper processing materials has already taken shape in China.After the reform and opening-up,the application of copper processing materials has gradually expanded from the military industry to civil field.The annual output of copper     

China’s Mineral Exploration Market Downturn Causes Decline of Investment in Bauxite

<正>According to a survey report conducted recently by China Geological Survey Development Research Center,in the first half of 2014,China’s mineral exploration market continued to decline,with the investment in exploration of non-fuel minerals dropping by13.7%and drilling workload dropping by21.7%.According to statistical analysis of the Center,     

Chinalco and China National Administration of Coal Geology Jointly Built Guangxi Rare Earth Industrial Base

正On June 3,Chinalco and China National Administration of Coal Geology signed cooperation agreement for strategic cooperationcooperation agreement between Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory.According to the agreement,both sides would jointly support Chinalco Guangxi Nonferrous Rare Earth Development Company and Xuzhou Jin Shi Pengyuan Rare Earth Material Factory to carry out comprehensive cooperation covering rare     

Aluminium Production by Province or City in 2014

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Fabricated Copper Production by Province or City in 2014

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Zinc Production by Province in 2014

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