210 t转炉干法除尘系统关键设备运行实践探索

包钢薄板厂于2006年完成对1#、2#转炉湿法除尘改干法除尘的工作。针对210 t转炉干法除尘系统设备存在故障和故障多发部位以及设备运行效率低下等问题,经过长期的摸索,找出了降低设备故障的措施和设备的运行规律,对部分设备进行了有效改进和改造,减少设备事故时间,提高除尘器运行效率。     

转炉一次除尘新OG法与LT法选择取向探析

介绍转炉新OG除尘、LT除尘系统流程、特点,对比300t转炉湿法除尘与干法除尘工艺流程、主要设备特性、系统水电汽能耗、总图布置、投资、及投资回收技术经济指标,就技术发展趋势等进行分析,比较论证两种方式的利弊所在,提出两种方式的选择取向参考意见。     

210t转炉干法除尘煤气净化回收分析

包钢薄板厂210t转炉一次除尘改造为干法除尘后,转炉煤气质量和煤气回收量相对于湿法除尘均有了明显的改善,介绍了干法除尘煤气回收系统的可靠性和安全性。     

转炉干法除尘煤气回收自动控制系统的应用和分析

介绍了菜钢120 t转炉干法除尘煤气净化回收自动控制系统的应用,详细叙述了莱钢120 t转炉干法除尘系统煤气回收的自动控制过程,并对影响煤气回收的几个因素进行了分析。     

转炉煤气半干法除尘系统工艺

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。     

中小型转炉湿法除尘OG系统设计探讨

1　概述　　根据不完全统计,我国中小型转炉,是指转炉公称容量小于100t的转炉,约有五六十座,约占全国转炉炼钢产量的40%;这些转炉大多数始建于70年代,转炉烟气净化除尘系统基本上是湿法除尘,其工艺流程与宝钢300t转炉烟气净化除尘系统相同或相近。通过20多年的实际运行,这些转炉烟气净化除尘系统都存在这样那样的问题。随着人们环保意识的提高,和国家对大气环境质量要求的标准越来越高,有必要对转炉湿法除尘系统进行全面的分析,找出存在的问题和解决的办法,为提高钢产量,增加经济效益及对转炉进行扩容改造,实现煤气回收,做好前期必要的工作…     

转炉干法除尘控制技术

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。     

转炉煤气除尘技术比较和新干法除尘技术探析

转炉煤气是高温高含尘烟气,不论湿法除尘还是干法除尘都要对其直接喷水降温,消耗大量冷却水,同时转炉煤气900℃以下显热能也白白浪费。介绍了现有转炉煤气除尘技术,包括湿法、干法以及半干法除尘技术,比较各自能量消耗。提出转炉煤气新干法除尘技术,该技术能显著减少系统冷却水消耗,并提高系统蒸汽回收量。     

蒸发冷却器与湿法除尘系统工艺结合的研究与应用

介绍了蒸发冷却器与湿法除尘系统结合的工艺流程、主要设备工作原理,及在莱钢炼钢厂120t转炉烟气净化与回收系统中的应用情况,并总结了此系统在实际生产中的应用实绩。     

迁钢210t转炉煤气干法除尘工艺生产实践

首钢迁钢第二炼钢厂210 t转炉烟气净化采用干法除尘工艺,采取多项措施对工艺及设备进行了优化,有效地提高了转炉煤气干法除尘系统的安全性。     

转炉煤气干法净化回收技术的运用

介绍了转炉煤气干法净化回收的工艺、设备等,并与OG湿法净化回收工艺进行比较,得出干法净化回收工艺在环保、节能、回收率等方面均有明显的优势。     

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.     

延长转炉一次除尘风机转子在线使用周期的措施

针对转炉一次除尘风机转子在线使用周期短的问题,2013年初唐山国丰钢铁有限公司第二炼钢厂通过对一次除尘系统中的半干式蒸发冷却塔、风机叶轮冲洗装置等设备进行改造,提高了除尘效率和叶轮冲洗效果,延长了风机转子在线使用周期和设备检修周期,节约了设备维修成本.     

邯宝250t转炉烟气干法除尘工艺的应用

邯宝公司炼钢厂2×250t转炉采用干法烟气净化回收工艺,系统运行稳定,净化后的烟气含尘量仅为6．8mg／m^3,且运行费用低。     

干式电除尘控制系统在转炉上的应用

介绍了干式电除尘控制系统应用在转炉烟气上的控制难点，以成功应用在唐山贝式体钢厂的转炉烟气干式电除尘控制系统为例，介绍了转炉烟气干式电除尘的工艺流程，干式电除尘控制系统硬件、软件构成，控制系统的理念、特点及优势。     

转炉煤气干法净化回收技术的应用现状和发展建议

转炉煤气干法净化回收技术是一项具有发展潜力的节能减排技术。概述了转妒煤气干法净化回收技术在国内的应用现状,并分析了存在问题。最后在此基础上,提出了能更加有效利用该系统的改进建议,包括加快关键设备和备件国产化进程、降低泄爆次数以及优化转炉工序操作等。     

大型转炉煤气干法与湿法净化回收工艺的技术经济比较

介绍代表现代化干法煤气净化与回收工艺的ＬＴ法和新一代ＯＧ法的技术经济特点。从基建投资、运转费用、净化效率、能源消耗、煤气及粉尘压块回收的再利用和环境保护等方面作了全面的分析与比较。     

邢钢30吨氧气顶吹转炉烟气净化回收实践

介绍了邢钢３０ｔ氧气顶吹转炉烟气净化及煤气回收系统装置及效果。     

RD文氏管喉口装置在安钢150t转炉中的应用

介绍了RD可调文氏管喉口装置在安钢第二炼轧厂150t转炉烟气净化及煤气回收系统中的应用。