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介绍了转炉煤气干法除尘技术的工艺过程,比较了湿法除尘技术和干法技术的各种效能,指出了干法除尘技术更适合我国冶金行业的要求。重点说明了昆钢新区2*120 t转炉将采用的干法除尘的主要设备及自动控制技术的特点和控制方法。 相似文献
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比较塔文湿法除尘工艺与传统OG湿法除尘工艺的特点,找出萍钢萍乡炼钢厂转炉煤气含水量偏高的原因,提出了相应处理措施。 相似文献
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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. 相似文献
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介绍了一种新的转炉煤气净化工艺——半干法除尘系统。以实际生产中120 t转炉为例,将半干法除尘工艺与传统的湿法除尘工艺、干法除尘工艺进行了详细的经济效益比较,得出结论:半干法除尘工艺是一项值得大力推广的切实可行的技术。 相似文献
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《不锈(市场与信息)》2008,(12):6
2008年,一大批先进适用的节能技术将推进太钢实施升级置换改造的新跨越。焦炉将全部配备干熄焦装置;烧结机全部配备热废气回收及余热回收系统;高炉采用外燃式高风温热风炉,炉项均配备均压煤气回收及煤气余压透平发电装置(TRT),并采用全干法除尘;转炉将采用干法除尘,配备有汽化冷却装置,在回收转炉煤气的同时,加大蒸汽回收;轧钢加热炉配备汽化冷却装置, 相似文献
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八一钢铁公司炼铁分公司高炉分厂共有380m^3高炉6座,0^#-4^#高炉的煤气除尘采用湿法除尘工艺,高炉产生的荒煤气通过重力除尘、一二文串联除尘,然后汇总到半净煤气总管再进入三座电除尘塔进行精除尘,成为净煤气,向各个用户输送。5^#高炉的煤气除尘采用干法布袋除尘工艺。 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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结合具体案例,通过对过滤式除尘器的机理、常见过滤材料性能、转炉煤气的特性等方面的分析,发现采用布袋、塑烧板过滤除尘器存在一定的技术难点,探讨了采用多孔金属纤维材质滤料在转炉煤气干法净化回收系统应用的可行性,总结了存在的问题及有待解决的问题. 相似文献
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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。 相似文献
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介绍了干燥烟尘的性质,分析、比较了湿法除尘、电除尘、袋式除尘3种干燥烟尘除尘方式的优缺点。叙述了中原冶炼厂袋式除尘工艺的改造过程、措施及对除尘通风管道进行的优化设计。除尘器改造应用实践表明,精炼车间粉尘回收率大大增加,除尘效果良好。 相似文献
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高炉煤气干法滤袋除尘工艺在中小型高炉煤气净化系统中被广泛应用并在实践中不断地改进和更新,滤袋除尘器的形式有滤袋正压内和正压外滤式。在原有的工艺设计、实施的过程中,结合其他除尘工艺新技术的开发及应用。高炉煤气干法滤袋除尘工艺和设备也在进行不断的开拓和新技术移植,高炉煤气干法滤袋除尘工艺应用于大型高炉将为时不远。 相似文献
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重钢3×2500m~3高炉采用的新技术 总被引:1,自引:0,他引:1
重钢3座2500m~3高炉采用了多项新技术、新工艺,如铁水一罐制、全软水密闭循环冷却系统、综合长寿技术、改进型高风温顶燃式热风炉、改进型嘉恒水渣处理工艺、全干法煤气除尘技术、高炉操作专家系统等,为实现高炉高效、低耗、长寿、环保创造了有利条件。 相似文献
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从除尘原理、结构方面对高炉煤气布袋除尘工艺中滤袋方式、滤袋选择、反吹方式、输灰方式等主要配置进行分析,指出高炉煤气布袋除尘应优先采用外滤氮气脉冲反吹,气力输灰的除尘方案。 相似文献