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高速外滤式脉冲清灰布袋除尘工艺用于高炉煤气的除尘 ,因其过滤风速高 ,清灰效果好 ,布袋寿命长 ,除尘效率高 ,改造投资少 ,见效快 ,优于的传统的内滤式加压反吹布袋除尘工艺 ,适合于现有内滤式布袋除尘器的改造 ,具有显著的环境效益、经济效益 .文章着重介绍该工艺设备的性能特点及系统的改造及应用状况 ,并对运行效果进行分析 相似文献
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介绍了苏钢集团转炉厂两座转炉二次除尘系统运用可编程控制器,实现了全程自动化控制;采用布袋清灰的工艺,减少转炉二次除尘积灰二次扬尘对环境的污染,解决除尘灰循环再利用的问题。 相似文献
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1050m3高炉煤气干法除尘技术应用 总被引:6,自引:1,他引:5
外滤式脉冲清灰布袋除尘工艺用于高炉煤气的除尘,以其节水节能成效显著,占地面积少,清灰效果好,布袋寿命长,除尘效率高,投资少见效快,优于传统的湿法洗涤除尘工艺,是国家大力推广的清洁生产技术。文章以福建三钢1050m^3高炉采用干法脉冲除尘为例,着重介绍BDC装置的工艺流程、技术指标、系统应用状况,并分析了运行使用的节能及环保效益,提出系统性能必须具备温度控制、耐压防漏防爆、检测监控、处理冗余度等实践总结。 相似文献
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太钢4号高炉喷煤站从1990年起采用MFD-Ⅲ型脉动反吹式布袋除尘器。这种除尘器采用脉动式反吹清灰设施,合理布置布袋间距,布袋支撑骨架及选用针呢材质的布袋,过滤面积大,反吹清灰效果好,设备运行平稳,除尘效率高达99.8%,排放浓度小于10mg/m^3,故障率低。 相似文献
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一、前言武钢是一个粉尘污染较严重的企业,为了消除粉尘污染,保护工人身体健康,安装了许多除尘设备,其中数量最大的是布袋除尘器,粗略统计有近百台,以耐火厂为最多。这些除尘设备均属六十年代的技术水平,代表其技术水平的关键装置之一——反吹清灰,是采用过时的定时程序控制,它不能随除尘系统运行参数的变化自行改变反吹周期。不论入口粉尘浓度的高低,布袋阻力 相似文献
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介绍了高压变频器的系统原理及性能特点,设计了转炉除尘风机变频调速系统的控制方案,从节能、高效、环保等方面分析了高压变频器应用在炼钢厂高压除尘风机上的良好经济效益和社会效益。 相似文献
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介绍了水浴洗涤式除尘器用于除尘和脱硫的机理,并对此除尘系统的除尘效率和阻力特性进行了试验研究。结论表明:水浴洗涤式系统简单,除尘器除尘效果好,阻力低,还可对烟气脱硫,在工业小型工业锅炉中有应用前景。 相似文献
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宝钢4#高炉炉前除尘技术的进步 总被引:1,自引:0,他引:1
高炉出铁场作为炼铁厂主要污染源,其除尘节能工作非常重要,通风除尘是高炉除尘的主要方式.宝钢分公司4#高炉的除尘系统在总结前3座高炉经验的基础上从工艺流程、风量分配等方面做出多项改进和创新.铁口区域除尘设计时加强密封性能,缩小除尘空间,采用了新型铁口区顶吸罩以及龙卷风式除尘,合并一、二次除尘,从而达到"铁口强力抽风"的效果;摆动流嘴采取两侧对角抽吸的方式;在关键部位选择安装调节阀,通过控制开度实现风量在不同铁口间和不同除尘点间的精细调节.运行一年来效果良好. 相似文献
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《Baosteel Technical Research》2010,(Z1):133
Environmental requirements world wide and in the P.R.of China in particular have increased and authorities are increasing the pressure on steelmakers to comply with always more stringent limits and standards. Modern converter steel making goes along with the innovation and new developments not only for the primary converter process itself but even more for the dedusting technologies.This paper describes the benefits and latest development of advanced off gas cleaning and recovery systems based on dry type cleaning with electrostatic precipitation and wet type gas cleaning based on wet scrubbers.Modern converter dedusting is based on suppressed combustion systems in order to reduce off gas amounts and to be able to use the gas for gas recovery.The dry type primary off gas treatment system based on electrostatic precipitator technology is the most advanced environmental solution available for converter steel making.Dry dedusting has been introduced in China successfully with a significant contribution by Siemens VAI being the market leader for converter dry dedusting systems.Siemens VAI has introduced several design improvements over the last years such as CFD modeling of flow conditions in evaporation cooler,design of chains for dust conveyors,design of ESP inlet,design and thickness of discharge electrodes and operation in energy saving mode.Additionally the DDS process has been successfully implemented in China for the De-P process.The gas recovery system for DDS has been optimized over the years with high quality equipment and integrated automation and control systems.Wet type dedusting for converter gas is a well proven technology for many years and is still widely used due to the simplicity of the process and the lower investment costs.SVAI has continuously improved it’s wet dedusting technologies to provide highly energy efficient systems which can achieve lowest levels of clean gas dust while still maintaining a moderate water and energy consumption with simplified process control and standardized process control packages.Main design and process improvements include expansion joints for connection of scrubber to cooling stack,new type of droplet separator,advanced hood pressure control package,ID fan washing system,ID fan speed control system etc.The focus for wet type gas recovery systems is still on maximum safety and reliability.SVAI has also successfully improved the technological packages for converter gas recovery for wet type dedusting systems.The comparison between the two system shows the advantages of dry dedusting mainly being the lowest clean gas dust content, lower operating costs,easier handling for recycling of residuals and no need for a water treatment plants.Wet type dedusting has it’s main advantages in the simple process and operation of the system,the flexible layout solutions inside the steel shop as well as generally lower investment costs.An overview on the numerous reference installations for dry- and wet type dedusting systems in China as well as world wide is given. 相似文献
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目前高炉袋式除尘器基本采用煤气加压反吹清灰系统,氮气脉冲反吹清灰系统用于大中型高炉煤气干法除尘尚处于试验阶段。对比了煤气加压反吹除尘器与氮气脉冲反吹除尘器的优缺点。展望了氮气脉冲反吹清灰系统的应用前景。 相似文献
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介绍了宣钢转炉干法除尘控制系统存在的问题、工艺优化与控制过程.通过对干法除尘电场控制系统进行改造、增设远程站、增加切换站放散杯阀伺服油路和换向油路切换功能组,实现了除尘管道自动吹扫,降低了设备故障,保证了系统安全稳定运行. 相似文献