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针对新建投产的130 t转炉,利用自产蒸汽,成功替代密封转炉氧枪口氮气,解决了蒸汽密封替代氮气密封的技术问题,使得炉子在检修时两路汽源相互共存交替使用,从而实现了转炉工序负能炼钢降耗的目的。 相似文献
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本文主要结合碳钢薄板厂炼钢工序三座120t转炉在线生产的实际运行情况和氧枪口氮气封实际密封效果,通过分析改造密封用气源,节约冶炼成本,增强了氧枪在冶炼时的密封效果,提高了安全生产,减少了烟尘外泄对环境造成的污染。 相似文献
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研究转炉中压蒸汽供应RH精炼炉真空处理和氧枪孔密封技术,实现了转炉与RH能源匹配的工艺模式,降低了转炉蒸汽放散率,满足节能减排的要求,并产生了显著的经济效益,提高了转炉蒸汽的综合利用效益。 相似文献
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煤气发生炉生产煤气用的气化剂蒸汽主要由煤气发生炉炉夹套产生的自产蒸汽和外来蒸汽组成,由于外来蒸汽压力比自产蒸汽压力高,当外来蒸汽管道和自产蒸汽管道串联时,使煤气发生炉的汽包长期处于超压状态,自产蒸汽没有得到有效利用。通过对煤气发生炉外来蒸汽和自产蒸汽管道进行改造,可达到自产蒸汽全部用于煤气发生炉生产的目的。本文介绍了改造方案和改造效果。 相似文献
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针对转炉经过汽化烟道冷却后产生蒸汽,在蒸汽生产不连续,蒸汽用量减少后只有放散,造成浪费现象。为了节约能源提高蒸汽的使用效率,通过充分的技术论证,成功开发出把转炉余热蒸汽应用到RH炉上进行抽真空使用。提高了转炉自产蒸汽的使用量,实现了节能减排,同时也创造了经济效益。 相似文献
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试析企业"招聘难"与毕业生"就业难" 总被引:1,自引:0,他引:1
近年来,企业“招聘难”与毕业生“就业难”已经成为一个愈演愈烈的问题,本文对“两难”产生的原因进行了分析,并提出了相应的对策。 相似文献
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We examined the accounts of 27 survivors of the Marchioness ferry sinking, using cross-validation of accounts to search for instances of motivated forgetting. In order to identify objective items that could be validated, we focused the analysis on subjects' statements of whom they were with at various stages of the disaster. We compared these findings with an informal recall of a non-traumatic event after an interval of a few days. The main finding was that recall was reasonably good for both traumatic and non-traumatic events. Specifically, in the Marchioness sample, among those 86 statements that could have been confirmed in the accounts of other informants, 74 were in fact confirmed. Of the remaining 12 unconfirmed statements, only one involved a contradiction. We conclude that for a disaster of this kind, and with this particular sample of individuals, motivated forgetting was extremely rare. 相似文献