Thermodynamic analysis of improvement of converter gas by injecting pulverized coal into vaporization cooling flue

In order to improve the calorific value and the recovery yield of converter gas during the steelmaking process, a novel and thermodynamically admissible process was proposed. This method involved injecting pulverized coal into the vaporization cooling flue of a converter, and the approach was developed based on an industrial 30 t converter. The effects of temperature, O2 content, and the volumetric ratio of CO to CO2 on the conversion of the mixed components of gas were analyzed using thermodynamic calculations. Furthermore, the effect of the injection rate on the quality and quantity of gas was investigated. The results show that the O2 and CO2 components of flue gas decrease as the injection rate increases, whereas the CO and H2 components synchronously increase. With the injection rate of 30 kg min-1, the 02 and CO2 components of the gas decreased by 64.12 and 41.19%, respectively, while the CO and H2 increased by 20.09 and 236.84%, respectively, and the recovery time of gas increased by 11.61%, compared to non-injection.

国产化转炉一次烟气干法净化回收系统研究与应用

介绍了转炉一次烟气干法净化回收系统应用背景,重点介绍了由中国重型机械研究院对该系统的研究开发成果及成功应用于冶金、有色等行业的相关烟气净化回收处理系统中的情况。根据应用于不同工况,其系统工艺及系统控制更应适应各工况特点,应不断完善其系统工艺及系统控制功能,使国产化干法净化回收系统运行更加稳定、可靠。

通钢120t转炉烟气净化与回收

介绍了通钢120t转炉的除尘设计方案的确定,烟气净化与回收的工艺流程,及其主要设备、自控系统、安全措施和应用效果等。

转炉一次烟气湿式净化与回收系统升级改造

本文对转炉一次烟气湿式净化与回收系统升级改造进行了阐述,针对不同厂房条件提出相应的改造方案,新增防爆型圆筒湿式电除尘器进行精除尘,文中详细描述了其性能及技术特点。改造后烟尘排放指标≤15 mg/Nm^3,煤气含尘浓度≤10 mg/Nm^3,可实现转炉煤气综合回收利用。本文对钢铁企业全面实现转炉一次烟气净化回收达标提供了可行性解决方案。

转炉一次烟气干法净化与回收系统爆炸原因浅析

转炉一次烟气干法净化回收系统作为环保节能的一项新技术,越来越多的被国内钢厂所采用;然而该系统中的爆炸一直以来备受人们所关注。本文从转炉一次烟气干法净化回收系统的工艺流程说起,结合炼钢中吹炼脱碳的过程特点,分析了的不同阶段爆炸产生的原因;为了避免爆炸对企业带来的巨大损失,总结以往实际项目中的经验,给出了一些行之有效的预防措施。

本钢120t转炉煤气净化回收系统的完善与分析

介绍了本钢第二炼钢厂为解决１２０ｔ氧气顶吹转炉煤气净化回收系统在运行过程中从炉口大量冒出烟气、火焰的问题所进行的分析和采取的技术改造措施，１２１６炉的冶炼表明，基本控制住了烟气、火焰从炉口大量外溢现象的发生，使生产得以顺利进行。