共查询到20条相似文献,搜索用时 62 毫秒
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本文阐述了竖窑石灰生产的尾气除尘方法,分析了存在的问题,同时对此双膛窑尾气除尘的成功经验,提出了解决竖窑尾气除尘的措施。 相似文献
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论述了密闭电石炉尾气回收利用的必然性,通过对尾气干法处理工艺和湿法处理工艺的比较,突出了电石炉尾气干法处理工艺的合理性.通过实际生产实践,取得了很好的节能降耗效果,为密闭电石炉尾气净化处理及与石灰窑的配套使用提供了很好的借鉴和指导. 相似文献
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介绍了炭黑生产中尾气治理的重要性,论述了昆明焦化制气厂回收炭黑尾气中硫的技术特点和效果,指出加强从原料油中脱硫,将是炭黑尾气脱硫技术的发展方向。 相似文献
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针对转炉煤气回收系统改造期间煤气平衡困难的现状,最大限度利用现有设施,适当增加少量必要设施,进行无气柜方式的转炉煤气回收,一定程度上缓解了三钢的煤气平衡的缺口,减少了因煤气平衡问题带来的压产损失,同时减少了向大气的排放. 相似文献
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针对磁氧式气体煤气分析仪故障率高、分析数据不稳定的现状,采用免维护的激光式气体分析仪进行技术升级改造。介绍了激光气体分析技术在煤气回收分析中的应用情况,利用半导体激光吸收光谱气体分析测量技术对煤气含氧量进行精确的在线测量,数据稳定,维护简单,确保了分析仪投运率100%和煤气回收设备的安全生产。系统自投用以来,性能稳定,满足了工艺设备要求,提高了系统可靠性,实现了先进技术与适用性的有效结合。 相似文献
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The high mortality associated with acute respiratory failure and further exacerbation of the lung injury by mechanical ventilation continues to pose a challenge in the management of critically ill patients. By providing total gas exchange and complete lung rest, extracorporeal membrane oxygenation (ECMO) has improved the survival rate of selected neonatal, pediatric, and adult patients. Arteriovenous carbon dioxide removal (AVCO2R) was developed as a less labor intensive, less costly, and less complex technique of extracorporeal gas exchange, allowing near total CO2 removal. 相似文献
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In vitro blood gas analysis requires limitation of the frequency of serial blood gas measurements for two major reasons--blood loss and cost. In vivo or ex vivo blood gas monitors eliminate these factors because the measurements are available continuously, or as frequently as deemed desirable, without permanently removing blood or imparting additional cost. For patients with arterial catheters in place, the propriety of blood gas monitors is obvious as long as there is no requirement to alter the size, location, or placement of the arterial catheter and the routine use of the arterial catheter system is unaffected. Further, personnel exposure to the patient's blood, and the risk of nosocomial infection from contaminated arterial catheters, should be reduced because the integrity of the arterial catheter and tubing system is not interrupted to obtain blood gas values. Blood gas monitors and point-of-care analyzers should significantly reduce therapeutic decision time (the interval from ordering the test to initiating a therapeutic action based on the test results), thereby enabling rapid titration of common therapeutic modalities such as oxygen administration, positive pressure ventilation, positive end-expiratory pressure, and manipulation of acid-base balance. The transfer of blood gas measurements from laboratory analyzers to the combination of blood gas monitors and point-of-care analyzers should have as profound an impact on acute care medicine as did the introduction of laboratory-based blood gas analysis over 30 years ago. In the current medico-economic environment, however, we must be certain that these devices are reliable, consistent, and cost beneficial in order to avoid widespread application of yet another technology that provides more data, greater costs, and only questionable patient benefits. 相似文献
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通过二维冷态物理模型对氧气高炉炉身喷吹煤气在炉内分布进行了实验研究,分别研究了炉身煤气总量、辅助风口直径以及炉身喷吹煤气量与炉身煤气总量之比对炉身喷吹煤气在炉内分布的影响.结果表明,炉身喷吹煤气量与炉身煤气总量之比对炉身喷吹煤气在炉身分布起决定性作用,而炉身煤气总量和辅助风口直径的影响较小.同时,在炉身煤气上升过程中涡流扩散效应的影响也较小.通过对根据实验数据绘制的炉身等浓度分布图进行研究发现,炉身煤气分布主要分为两个不同的区域,一个是炉身喷吹煤气主流区,另一个是从高炉下部产生的上升煤气主流区.在炉身等浓度分布图的基础上通过回归分析的方法推导出炉身喷吹水平喷吹煤气的渗透公式.此外,辅助风口被安装在炉身下部有利于铁矿石在炉身的间接还原. 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