共查询到20条相似文献,搜索用时 140 毫秒
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结合某铜业公司多台转炉的供风控制的实际情况,对转炉的作业方式调整为3H2B后的供风控制的典型方案进行比较,对风机与转炉的对应工作模式进行分析.实践证明,通过增加1台风机及少量阀门、管路,充分发挥了原有设备的最佳潜能,使转炉工序的生产能力得到了大幅提升. 相似文献
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空气压缩机的喘振使风机叶轮产生了强烈振动,并使压缩机壳内温度急剧升高,持续喘振会损坏空压机.介绍了邢钢BPRT同轴机组在现有防喘振阀的气源系统中新加一路压缩空气气源作为备用气源,同时设计一气源自动切换装置实现两路气源的无扰切换的实践,对防喘振阀和高炉压缩机的安全稳定运行有着十分重大的现实意义,有一定的推广应用价值. 相似文献
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为稳定上塔压力和塔内组分,保持再生污氮气流量的稳定,采用CS3000控制系统,实现了分子筛吸附装置自动切换程序控制、均压阀缓开、缓关等调节控制功能,保证了空分系统工况稳定,减少因控制系统故障造成的设备停机时间。 相似文献
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采用时间序列预测模型建模方法,包括时间序列模型阶次判定、参数估计、模型检验,对莱钢高炉煤气总发生量进行预测。结果表明,模型预测准确,平均误差为1.8748%,对煤气发生量的短期趋势预报有一定参考价值,能够为制定合理的煤气使用计划提供依据,可提高钢铁企业节能降耗水平。 相似文献
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京唐炼铁余热余能占炼铁工序能耗的60%左右,分布于热风炉、高炉煤气除尘、炉前除尘、渣处理和高炉本体冷却水等系统。重点分析现有工艺技术流程,通过高炉煤气回收、干式TRT和热风炉烟气预热空煤气及制粉三项利用技术,已实现炼铁主要余热余能回收80.8%,指出热风炉烟气和高炉煤气物理显热利用率仅为30%~40%,还有待进一步提高。同时,以末端温度为基础分析了各项低品位余热潜力尚有65.9kgce/t,并提出有效利用放散高炉煤气、热风炉烟气和冲渣水余热等措施和建议,为余热梯级回收和合理高效利用提供依据。 相似文献
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Flooding processes occurring on alluvial fans are considerably different from those occurring along single thread rivers with well defined floodplains. Active erosion, rapid sedimentation, and the uncertainty in flow path make the prediction of flood evolution and extent difficult. Based on a large scale experiment, this study investigates the long term evolution of the flow on a steep, noncohesive sediment surface resembling a complex of merged alluvial fans. The results are pertinent to the assessment of flooding hazard on alluvial fans. At any given time, the average flow occupancy was 21% of the surface. However, the flow was characterized by active channel switching and overflow processes. The percentage of the surface remaining dry was found to decay harmonically with time. A reworking time was defined as the time at which half of the surface that was initially dry remained dry, whereas the other half was inundated at least once. An empirical expression was developed in which reworking time is proportional to the average cross sectional area of flow and inversely proportional to the sediment supply. 相似文献
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针对天铁高炉新型液动炉顶放散阀在生产中经常出现的开关不到位、密封面不严等问题进行研究,发现阀体自身运转机理及阀座阀盖密封面受热膨胀等因素导致了休风放散阀不能正常使用。经分析后对高炉炉顶休风放散阀系统进行了改进。改进后效果良好,提高了炉顶休风放散阀的使用效率。 相似文献
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高炉煤气干法除尘具有良好的节能效果,但高炉煤气除尘改干法除尘后,煤气的腐蚀性普遍增强,给煤气管道带来严重的腐蚀问题。宝钢1号高炉大修设计中就采用了干法工艺,并遇到了这种腐蚀和泄露问题。该文就高炉干法除尘的机理进行分析,并对腐蚀问题给出了相应对策。 相似文献
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《Baosteel Technical Research》2010,(Z1):133
The gas resource in iron & steel factory is very rich.One of gas utilization routes is methanol synthesization using gas,including BFG,LDG and COG,and in this way both the CO2 reduction and the chemical products with high value can be obtained at the same time.In this paper,the technique route of BFG utilization for resource is put forward,and the environment and economy evaluation models are set up to analyze and estimate the CO2 reduction and economic benefit of methanol synthesization by BFG and by gas off full- oxygen blast furnace. 相似文献
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马钢热电厂依靠技术进步节约能源 总被引:1,自引:1,他引:0
马钢热电厂为了多烧高炉煤气多发电,对200t/h煤粉锅炉实行了动力配煤,对高炉煤气烧嘴和给煤系统、汽轮机进行了改造,使高炉煤气用量达到2万m3/h,机组能力由5万kWh增加到6万kWh. 相似文献