转炉煤气无气柜回收的成功实践

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.     

转炉煤气无气柜回收

针对转炉煤气回收系统改造期间煤气平衡困难的现状，在分析了原回收系统中气柜作用的基础上，提出了无气柜回收方式．通过增加PLC控制系统及用于控制压力上限的放散管等少量必要设施并充分利用现有设施，确定了压力上、下限等相关技术参数，解决了安全问题．实现了转炉煤气的无气柜方式回收．     

煤气设施带气堵漏常用方法及实践

包钢燃气厂煤气柜、煤气管网及附属设施运行多年,经常出现冲刷、腐蚀泄漏现象,通过对煤气泄露部位堵漏方法和实践经验的归类总结,根据泄漏设施不同情况,介绍了几种较为实用的带煤气堵漏作业的方法。     

煤气安全防护设施升级改造

为有效防止高炉系统煤气设施意外泄漏,便于煤气泄漏后及时发现处理,对煤气检测系统实施在线监测集中监控。监控系统以西门子PLC系统为控制核心,核心数据传输采用工业以太网技术,将老式煤气排水器更换成新型防泄漏型煤气排水器。改造实施后,解决了煤气系统自身缺陷,杜绝了煤气泄漏,提高了设备本质安全化水平。     

提高煤气综合利用率,努力实现煤气零放散

完善和优化煤气系统的配套设施,加大系统的调节功能,建立能源管理目标和信息沟通平台,提高煤气综合利用率,实现煤气零放散是可行的。     

优化煤气系统动态平衡

通过分析重钢煤气系统的动态平衡,探讨了利用大、中修改造设备,优化用气设施,将煤气产出与产电相结合,优化煤气系统的动态平衡,煤气放散的措施。     

一起煤气爆炸事故的原因分析及防范措施

煤气是一种易燃易爆的气体，在煤气区域或煤气设施上进行动火作业的危险性较大，柳钢为此制定出一套比较严格的煤气动火管理制度。在煤气区域动火要向有关管理部门申请办理动火许可证；在煤气设施（煤气管道、加压机等）上动火，必须先堵肓板，再用氮气或蒸汽进行吹扫，经防护站人员现场检测合格，并在动火许可证上签字同意后，方可开始动火作业。多年来，柳钢没有发生过重大的煤气爆炸事故，取得了一定的成绩，但仍没有杜绝煤气爆炸事故的发生。     

转炉煤气回收系统的腐蚀与防腐问题探讨

针对转炉煤气设施腐蚀比较严重的问题,通过对煤气腐蚀性成分、腐蚀物样品进行分析,并采用了实验室加速模拟试验、现场挂片试验等多种实验手段对选定的防腐蚀手段的优劣及合理性进行了比较和验证;提出了转炉煤气设施腐蚀防护的综合解决方案.     

煤气设施检修过程安全管理分析

针对煤气设施检修重点,介绍了煤气停、送、动火作业、带煤气作业以及管网故障处理的安全管理措施,为企业长周期稳定运行提供保障。     

某钢厂COREX炉搬迁配套公辅设施方案分析

合理利用COREX副产煤气和供氧是提高COREX经济性的重要因素,针对某北方钢厂提出了一种COREX炉搬迁配套公辅设施建设方案。该方案利用副产COREX煤气产生高温高压蒸汽驱动制氧空压机并进行发电、供热。介绍了该方案的系统配置及启动方案,并分析了该方案对全厂煤气、氧气、蒸汽综合平衡的影响。     

冶金设备经济寿命与报废判定数学模型的应用

根据设备寿命经济价值的定义,构建出了设备经济寿命的数学模型,介绍了数学模型中有关数据获得方法,并结合济钢设备运行实际,对设备经济寿命数学模型进行了应用分析。     

配备辅助通风的高温矿井采掘区温度分布数值模拟

巷道高温是制约深部开采的一个重要因素。为了更好地发挥辅助通风设施的作用,提高短距离高温矿井的通风降温效果,采用数值模拟方法研究辅助通风设施对巷道降温效果。通过建立数值模型,设置有无辅助通风设施、不同辅助通风设施长度、不同辅助通风设施与墙壁之间的距离以及不同进气道风速等条件,分析掘进巷道的冷却情况。结果表明:无辅助通风设施的巷道仅靠增加进气道风速无法获得显著的冷却效果;在增加辅助通风设施的情况下,随着辅助通风设施长度的增加,掘进巷道的冷却效果越来越好,当辅助通风设施长度增加到一定程度后通风降温效果开始下降;增加辅助通风设施与墙壁之间的距离可显著提高通风降温效果;在辅助通风设施长度和辅助通风设施与墙壁之间距离固定的前提下,增加进气道风速可改善冷却效果,但随着风速增加,冷却效果改善越来越不明显。     

Assessing the physical and architectural features of sheltered care settings

The Physical and Architectural Features Checklist (PaF) measures the physical resources of sheltered care settings in terms of nine conceptually unified and empirically derived dimensions. The development of the PAF is described, and psychometric characteristics, based on data from 93 representative facilities, are presented. These data show that facilities which have more physical resources are seen as attractive by outside observers and pleasant by residents. Larger facilities are more likely to provide barrier-free environments, more flexible physical settings, and more staff facilities. Cost is not related to any PAF dimension; however, nonprofit facilities score higher on several dimensions than do proprietary facilities. Richer physical settings tend to offer residents more policy resources. They are more selective, provide more privacy, allow residents a higher degree of influence and choice, and have clearer policies. Sample profiles illustrate the usefulness of this instrument for describing and comparing facilities; additional uses are discussed.     

Integrated Development of Facilities Design and Services

Leading manufacturers are shifting towards innovation strategies where goods and associated services are developed jointly. A similar approach to construction would imply stronger input from facilities management into design. The purpose is to investigate paths for integrating the development of facilities design and services, assuming that the determining force is economic efficiency from the viewpoint of facility owners. Current organizational contexts for facilities managers are identified. Design is seen to reconcile supportive and protective features of facilities. Transaction cost reduction, as caused by the progress in technologies that allow remote monitoring of systems and components, is highlighted as an integrating force for manufacturers and service providers. Integration possibilities associated with current information technology tools related to computer aided design, building automation and computer aided facilities management are reviewed. Integration often has to handle portfolios of old and new buildings in multiple locations. Finally, the need for a strong design element in the education of future facilities managers is identified.     

A survey of nucleic acid services in core laboratories

Core facility services related to DNA synthesis and sequencing were surveyed by the Association of Biomolecular Resource Facilities. Responses from 85 facilities offering DNA synthesis and 37 facilities offering DNA sequencing were obtained. Data on instrumentation, volume, number of users, cost, methodology and a number of other criteria were obtained. The volume of work performed by these centralized core facilities was quite substantial (combined synthesis output of 4 million bases per year and a combined sequencing output of 35 million bases per year). The large number of users supported by these facilities and the high sample throughput make these core resource facilities good indicators of technological trends.     

三山岛金矿新立分矿选矿厂磨矿分级系统改造与应用

为了进一步挖掘磨矿系统的潜力,提高磨矿处理量,在原有设备设施的基础上,通过增大一段磨矿的通过能力并且对二段磨矿作业进行扩容改造,利用原有的浮选及配套设施,达到提高磨矿处理矿量300 t/d 以上的目标。如此改造不仅工艺简单、投资减少,而且最大限度的提高了一段磨矿的磨机利用系数及附属设施的利用效率,效益明显。     

成膜胺在机组停备用保养期间的应用

描述了热力设备在停备用期间存在的腐蚀情况，介绍了十八烷基胺的主要理化特征及其在热力机组停备用保养期间的实施应用和注意事项，其效果明显优于传统的热力设备停备用保养方法。     

浅论除尘设施经济运行之途径

本文探讨了除尘设施实现经济运行的途径和方法,提出了在除尘设施设计与运行管理中应该把握的原则,介绍了几种新的节能技术。     

提高设备综合效率途径的探讨

从如何提高设备综合效率的角度提出出加强设备管理，延长设备检修周期，进行设备技术改造等措施，使设备创造出最佳经济效益。     

Reducing staff turnover: a case study of dialysis facilities

A multivariate logistic analysis of 42 Texas dialysis facilities indicated that younger, white, short tenure, an LVN/LPN, with less support from family and friends for emotional concerns, and less supervisor support significantly increased the likelihood of turnover (p < or = .05) in dialysis facilities. The high annual staff turnover of these dialysis facilities increases costs and impedes the delivery of quality patient care. Managerial strategies to increase staff retention are suggested.