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1.
间隙自补偿漏风控制系统是提高空气预热器运行效率与经济效益的重要设施,对现有的空气预热器进行密封改造,使其漏风率得到有效控制,即成为现阶段企业发展的关键所在。文章就间隙自补偿漏风控制系统在空气预热器密封改造中的应用进行分析,并总结出间隙自补偿漏风系统的主要优势及其在空气预热器密封改造中的主要应用措施与方案。  相似文献   

2.
本文以三分仓回转式宅预器为例,通过对漏风大的原因进行分析,同时从设计、安装、运行、检修维护等角度提出降低漏风的政策建议,进而在一定程度上为治理火电厂回转式空预器的漏风提供参考依据。  相似文献   

3.
随着环境压力的逐步加大,火力发电厂增加脱硝装置已势在必行,在脱硝改造中,需进行空预器及引风机系统的配套改造。文章结合汕尾电厂1、2号机组的改造实例,探讨了SCR烟气脱硝技术、空预器密封及防腐技术、联合风机技术在改造中的应用,为燃煤机组的风机设置提供更为合理的借鉴参考。  相似文献   

4.
滕志毅 《企业技术开发》2010,29(6):98-98,102
文章介绍了300 MW火电机组锅炉回转式空预器低温腐蚀及堵灰情况。结合广州华润热电1#机组介绍了空预器堵灰的危害,分析了造成空预器堵灰的主要原因,给出了针对性的预防和处理措施,保证了机组安全、稳定、经济运行。  相似文献   

5.
王雲海 《科技与企业》2014,(16):203-203
通过对迷宫梳齿密封与接触式蜂窝汽封的优缺点和工作原理进行比较说明,介绍了接触式蜂窝汽封在汽轮机组上的应用情况,以及进行汽封改造后所取得的效果。  相似文献   

6.
空气预热器是回收烟气余热的主要设备,预热器漏风与堵塞对锅炉燃烧影响较大,且不可避免.文章结合梅山能源公司2号锅炉在2009年6月份的大修,分析了锅炉空气预热器漏风及堵塞的原因以及对锅炉燃烧效率的影响,并找出处理的方法.  相似文献   

7.
空气预热器是回收烟气余热的主要设备,预热器漏风与堵塞对锅炉燃烧影响较大,且不可避免。文章结合梅山能源公司2号锅炉在2009年6月份的大修,分析了锅炉空气预热器漏风及堵塞的原因以及对锅炉燃烧效率的影响,并找出处理的方法。  相似文献   

8.
本文分析了锅炉管式空气预热器常见故障,如飞灰碰撞形成磨损穿孔、预热器管孔堵塞、硫化物腐蚀,通过分析故障的现象、成因、机理和过程、指出了常见故障不同的检修方法;在此基础上结合生产实际,对管式空气预热器检修工艺方法、注意事项及更换进行了阐述和说明,进而对管式空气预热器的制作、拆除和安装进行了进一步总结,得出了加强锅炉管式空气预热器常风故障及检修工艺分析重要性的结论.  相似文献   

9.
对于老水泥圆库的收尘改造,在搞好密封的同时设法两两相连,用一台小型收尘器即可实现废气和粉尘的收集功能,并与送料设备电气联锁,最大限度节约能耗成本.  相似文献   

10.
《价值工程》2015,(28):166-168
采用双端面机械密封面对面布置,设计适合压力过滤机特点的机械密封。对原进口机械密封进行了研究分析,在此基础上进行了国产化改造。实际应用表明,采用平衡型双端面密封成功替代了原进口密封,保证了设备长周期安全运转。  相似文献   

11.
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.  相似文献   

12.
Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.  相似文献   

13.
Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.  相似文献   

14.
NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.  相似文献   

15.
There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.  相似文献   

16.
Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.  相似文献   

17.
We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.  相似文献   

18.
A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.  相似文献   

19.
We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.  相似文献   

20.
杨明 《价值工程》2012,31(7):16-17
物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。  相似文献   

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