转炉工艺参数变化与除尘效率分析

通过对转炉扩容后冶炼工艺参数的变化的计算,以及对OG除尘系统能力的重新核算,分析了转炉一次除尘效率低的原因,指出转炉扩容后装入量增加及供氧强度提高,扩容前的OG湿法除尘系统已完全不能满足冶炼工艺变化。结合国内转炉一次除尘技术的发展方向,根据转炉扩容后工艺参数的实际变化情况,对今后转炉一次除尘的改进方向做了探讨,提出了改进建议。     

转炉二次除尘新技术在改造项目中的应用

介绍了转炉二次除尘新技术的研发背景,结合宝钢二炼钢转炉除尘系统改造项目介绍了转炉二次除尘新技术在改造项目中的应用情况。从除尘风量的确定、集尘罩的形式、管路系统的布置以及转炉三次除尘等方面进行了具体分析,对比传统转炉二次除尘系统的不足,提出了转炉二次除尘新技术的优势,为大中型转炉二次除尘系统在线改造提供参考。     

提高本钢转炉一次除尘效率的研究与实践

本钢转炉一次除尘系统烟气流量超过设计能力,系统结垢严重,影响转炉一次除尘效果。经过计算原材料产生的烟气量,优化转炉工艺操作,增加石灰筛分工艺减缓结垢速度,提高了转炉除尘效率。     

炼钢厂二次除尘系统改造

针对型钢炼钢厂转炉扩容后二次除尘效果下降的状况,提出了烟气净化除尘系统改造方案。通过改造原有转炉二次除尘设备,同时新增配套二次烟气处理设施,使炼钢厂二次除尘效果得到了有效改善。     

迁钢炼钢工程210t转炉二次除尘设计

简述了迁钢炼钢工程210t转炉二次除尘和散料除尘设计，着重介绍了转炉二次除尘系统一期和二期工程的良好结合，和散料除尘应用双通道脉冲布袋除尘器，解决除尘系统中的定风量和变风量的组合问题。并探讨了存在的问题和解决方法。     

50t转炉一次除尘系统改造实践

文章针对泉州闽光转炉一次除尘系统除尘效果不佳的问题进行了诊断,使用排查管道系统、分析烟气产生原理、复核运行数据等手段,找出问题原因并提出改进方案。经过实施改进方案,解决了除尘系统效果不佳的问题,烟尘排放满足国家标准。     

转炉二次除尘气力输灰

介绍福建三明钢厂100t转炉二次除尘系统采用气力输灰的工艺，减少了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问题。     

宣钢高炉、转炉除尘系统的优化改进

对宣钢1800m^3和2500m^3高炉出铁场除尘系统、百吨炉区3×120t转炉二次除尘系统存在的问题进行了剖析,阐述了除尘系统优化和改进的措施及效果,为同行业高炉、转炉除尘系统优化改造提供借鉴。     

可编程控制器在转炉二次除尘系统的应用

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。     

干法除尘在攀钢西昌基地200t转炉上的成功应用

攀钢西昌基地转炉一次除尘在借鉴攀枝花本部转炉一次除尘采用传统OG法、新型OG法的经验基础上引进了LT干法除尘技术,该除尘系统主要由蒸发冷却器、静电除尘器和煤气冷却器等组成.一年来攀钢西昌基地转炉干法除尘系统运行稳定、阻损小、费用低、净化效率高(烟气含尘量小于10 mg/Nm3),与湿法除尘系统相比取得了更好的经济效益和环境效益.     

Latest developments for dry and wet dedusting systems for converter steel making

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.     

静电布袋复合除尘器在转炉一次除尘系统的应用

静电布袋复合除尘是基于静电除尘和布袋除尘两种成熟的除尘理论而提出的一种新型的除尘技术。它结合了静电除尘器和布袋除尘器的优点,将其应用于转炉一次除尘系统能够实现处理后的转炉煤气含尘量≤10 mg/m3,除尘系统运行可靠,减少投资费用和占地面积,并对超细颗粒（如PM2.5）有较好的捕集效果,在新建和改造的转炉一次除尘项目中具有良好的应用前景。     

单光路激光气体分析仪在转炉煤气回收中的应用

针对转炉煤气回收柜前、干法除尘工艺中电除尘装置后煤气浓度分析的重要性和目前分析系统的不足,结合冶金行业大力推行节能减排、绿色炼钢的可持续发展模式,介绍济南钢铁股份有限公司第三炼钢厂新炼钢转炉的煤气浓度分析仪,详细说明激光分析仪工作原理,重点介绍单光路激光气体分析仪在转炉干法除尘中的应用问题。实践证明激光分析仪能够满足在转炉煤气回收利用中煤气浓度的监测功能要求。     

150t转炉一次除尘效果及节能研究

150 t转炉一次除尘系统的喷嘴,喷水量比较大、供水压力低,而且喷嘴易堵塞,导致除尘有盲点,除尘效果不好,烟囱时常有冒黄烟、黑烟现象,对周围环境影响很大。另外,由于用水量较大,煤气洗涤的水泵常处在超负荷工作状态,耗能高,效率低。对此进行研究并采取了改进措施。     

转炉煤气干法除尘技术

简要介绍了国内外转炉煤气干法除尘技术及应用情况,重点介绍了系统运行中出现的问题及采取的控制措施。通过采取优化转炉吹炼操作及配置静电除尘器,保证蒸发冷却器喷嘴雾化效果,开发应用粉尘冷压块等工艺降低了回收成本,干法除尘系统运行稳定。国内外钢铁企业运行结果表明,采用干法除尘后,回收煤气含尘量可以控制在10mg/m3以下,与湿法除尘技术指标对比,干法除尘具有能耗低、投资回收期短等优点。     

炼钢厂转炉二次除尘和顶吸除尘系统应用

对福建三安炼钢厂转炉二次除尘系统的改造实践进行了详细的介绍。对旧二次除尘系统改造和增加炉顶吸尘系统后,彻底解决了转炉兑铁、冶炼过程烟尘外溢以及厂房顶部冒烟尘的问题,减少了空气污染,改善了自然环境。     

转炉除尘技术发展及改进展望浅析

介绍了目前转炉除尘几种方法的特点,并根据转炉烟尘处理的要求和除尘技术发展现状,对转炉除尘发展和现有技术改造进行了展望。     

高压变频器在转炉一次除尘风机中的应用

介绍了完美无谐波高压变频器原理、性能及在转炉一次除尘风机电机中的应用情况.实践证明,转炉一次除尘风机电机应用高压变频控制后,在节能、环保等方面取得了较好的技术与经济效果.