660 MW燃煤电厂的生物质气化耦合技术研究与应用

文章针对湖北某电厂进行生物质气化耦合发电进行技术研究,提出了:(1)660 MW燃煤电厂的生物质气化耦合应用技术方案,分析了660 MW燃煤电厂生物质气化耦合的可行性;(2)掺烧改造方案通过在主燃区前后墙各布置2只生物质燃气燃烧器,能实现锅炉掺烧生物质气化燃气的目的;(3)通过分析生物质气化耦合发电对2#锅炉的影响,得出生物质气化耦合发电对锅炉动力场、对流换热、排烟温度影响非常小,能降低NO_x污染物、SO_x污染物排放并且能作为基础负荷与660 MW机组深度调峰相结合。     

生物质耦合发电项目综合效益分析

正目前,关于生物质耦合发电项目财务评价大多停留在其经济性分析上,对环境效益重视度不够。现借鉴国内外学者对于环境效益的研究,提出利用环境价值方法将环境效益量化,建立以环境效益为主、发电供热效益为辅的项目评价体系,以期从全面的、可持续发展的角度对生物质耦合发电项目进行评价,提高项目的经济可行性和竞争力。     

生物质能发电厂的实践与思考

正近年来,生物质能作为一种清洁能源逐步受到重视,生物质能发电是生物质能高效利用的主要方式之一。生物质发电具有良好的社会效益和生态效益。但是,生物质发电行业仍然存在着制约行业发展的诸多问题。在公布的《中国农村地区生物质发电项目最终报告》中显示,我国生物质发电厂绝大多数亏损,这严重制约了生物质发电产业的进一步发展。A生物质发电厂发展现状分析A生物质发电厂基本情况A生物质能2×12兆瓦项目从     

我国生物质发电的发展环境分析

论述了国内生物质发电项目的发展情况,根据多项生物质发电工程前期工作研究和评审经验,在国家有关主管机构要求完成相关课题研究和调研的基础上,对生物质发电项目对生态环境的影响进行了分析,对目前亟待重视的问题和政策进行了讨论研究,以期为我国生物质发电产业的健康快速发展提供借鉴。     

我国生物质能发展现状与展望

"十三五"我国生物质能发展现状生物质发电在我国,生物质发电主要包括城镇生活垃圾焚烧发电、农林生物质发电、沼气发电。"十三五"以来,我国生物质发电规模逐年上涨。根据国家能源局数据,截至2019年底,全国已投运生物质发电项目1094个,累计并网装机容量2254万千瓦,其中,垃圾焚烧发电1202万千瓦,农林生物质发电973万千瓦,沼气发电79万千瓦。     

加快推进生物质发电市场建设

2011年8月，迄今为止全世界单机容量及总装机容量最大的纯燃生物质发电项目——广东粤电湛江生物质发电项目1号机组正式投入商业运行。该项目规划总装机容量为4×5万千瓦生物质发电机组。一期工程建设2×5万千瓦生物质发电机组,     

数字

正25亿元2021年生物质发电中央补贴资金总额为25亿元国家发改委、国家财政部、国家能源局印发《2021年生物质发电项目建设工作方案》。《方案》提出,2021年生物质发电中央补贴资金总额为25亿元,推动生物质发电有序建设,生物质发电项目须纳入国家、省级专项规划。纳入2021年中央补贴范围的竞争配置项目,应在2023年底前全部机组建成并网,实际并网时间每逾期一个季度,并网电价补贴降低0.03元/千瓦时。     

可再生能源电价附加资金补助目录公布

正6月15日,财政部、国家发展改革委、国家能源局联合发布了《关于公布可再生能源电价附加资金补助目录(第七批)的通知》(以下简称《通知》)。其中包括:可再生能源发电项目,公用独立系统项目,非自然人分布式光伏发电项目和可再生能源发电项目。其中,非自然人分布式光伏发电项目作为可再生能源中唯一的单列项目进行公布。《通知》要求,现有农林生物质发电、生活垃圾焚烧发电和沼气发电国家电价支持政策之外的,包括燃煤与农林生物质、生活垃圾等混燃发电在内的其他生物质发电项目,不纳入国家可再生能源电价附加资金补助目录,由地方制定出台相关政策措施,解决补贴资金问题。     

三部委要求加强生物质发电项目环评

国家环境保护部、国家发改委员会、国家能源局昨日下发通知要求，要进一步加强生物质发电项目环境影响评价管理工作，要求生物质发电项目必须依法开展环境影响评价。     

生物质直燃发电项目投资分析

本文通过对多个已投产的典型生物质直燃发电项目的投资分析,希望能够达到有效控制工程造价,提高投资效益,促进生物质直燃发电在我国持续健康发展的目的.     

增强Linux系统安全性的措施

L inux系统的安全取决于系统管理员如何来管理它。本文探讨了一系列可以增强安全性的技巧与策略 ,包括 :系统安装原则、BIOS安全、口令安全策略、设计帐户自动注销功能、文件系统和日志安全策略、使用 SSH及 TCP-WRAPPERS,隐藏系统信息、删除所有特殊帐户、关闭控制台程序、限制系统中的 SUID/ SGID程序等。本文最后向 L inux系统管理员提出了一些安全管理方面的建议     

CIS与现代企业管理美学

概括性介绍了 ＣＩＳ（Ｃｏｒｐｏｒａｔｅ Ｉｄｅｎｔｉｔｙ Ｓｙｓｔｅｍ）的三大基本组成，并阐述了它与现代企业管理密不可分的相互联系及所处的举足轻重的地位，指出导入ＣＩＳ是现代企业谋求发展的重要手段。     

Divergent patterns of engagement in Internet standardization: Japan,Korea and China

This article analyzes the engagement of Japanese, Korean and Chinese participants in the development of Internet standards at IETF on the basis of four quantitative metrics: attendance, patenting, authorship and leadership. The results are strikingly divergent. Japanese involvement in Internet standardization began early and Japan was, for many years, second only to the U.S. in terms of IETF participation. Though Japanese participation has declined since the early 2000s, Japan remains a major contributor to IETF standardization. Korean involvement in IETF has always been significant, but below the levels of Japan and major European countries. Korean participation in IETF has also declined over the past decade, and has been dominated by one firm, Samsung. Though meaningful Chinese involvement in IETF did not begin until the mid-2000s, it has rapidly expanded in recent years. Today, China is a major player in numerous areas of Internet standardization in terms of three metrics (participation, patenting and leadership), and is rapidly gaining in terms of document authorship as well. Most of China׳s recent IETF involvement can be attributed to Huawei, though other Chinese firms have recently begun to increase their participation in the organization. Thus, contrary to some views that China׳s engagement with standardization is primarily one of indigenous innovation and “catching up”, China׳s experience with IETF demonstrates deliberate and effective engagement with a major Western standards-development organization on its own terms.     

Comparing FTTH access networks based on P2P and PMP fibre topologies

There is an ongoing discussion in the market which Next Generation Access (NGA) architecture best suits future needs and which investment and cost differences exist. The discussion can be subsumed as P2P vs. GPON, which is somewhat misleading as this article reveals. The discussion is driven by the fact that the high capital cost and the long asset life time of fibre mean that the technology choices made today will dominate the opportunities for telecommunication business of all market players, incumbents, competitors, content providers and business and residential users for many years in the future.The paper analyzes the cost and other differences between Fibre-to-the-Home (FTTH) access network architectures and their related different wholesale approaches by using the well-known and understood steady state approach applied in other NGA analyses in the past. In addition to the steady state analysis a dynamic cost evaluation is included taking into account the different investment behaviour of the FTTH architectures over time. The results describe investment and cost differences between architectures, incumbents and wholesale based competitive operators. The analysis has been performed for different geotypes (clusters) of decreasing population density in a representative European settlement structure.     

快速成形技术的应用及热点分析

基于快速成形技术的原理,展示了快速成形技术在快速模具制造、金属零件直接成形、反求工程等领域的广泛应用,总结了快速成形制造技术研究的热点,即研发新材料和新设备、提高成形精度、建立RPM的反求工程系统、建立成形技术的统一标准和扩大成形技术的应用领域。     

Whose Image is it Anyway?: Some Considerations of the Curricular Importance of Subject Image in Secondary School Design and Technology Education

This paper explores the idea that a sense of school subject image is a necessary feature of curriculum management and a potent force for change. The discussion centres on the view that all school subjects have an image and that if those intimately involved with the subject do not control the image then someone else does! In such circumstances the image is the product of past encounters and old euphemisms and is unlikely to hold the changed realities.The UK developments in Design and Technology education (the term Design and Technology is used to denote the school subject defined under this heading by the UK National Curriculum, 1995) have created something of an image problem which has interesting international parallels. Some of these problems are due to clearly discernible internal tensions and an ambiguous relationship with other subject areas.Through greater attention to subject image internal controversies might be acknowledged and resolved, relationships with other subject areas can be more meaningfully understood and practitioners can be helped to make sense of curriculum change.     

Diffusion and usage of public e-services in Europe: An assessment of country level indicators and drivers

We analyze the state of the art of indicators on e-government, e-health, e-procurement and e-participation. We survey the main methodological properties of these indicators, and highlight their heuristic potential. Further, we address empirically the issue of the explanation of the availability scores, i.e. how the supply of the various e-services in each country is affected by political, institutional and socio-economic differences, and is followed by actual usage. The econometric analysis uncovers the importance of broadband penetration and higher education as drivers for most of the types of e-services and users (citizens and businesses). Moreover, a corruption-free and agile public sector proves to be an important pre-condition for more effective supply and usage. Despite data limitations and the complexity of the underlying diffusion phenomena, our study is the first truly longitudinal contribution aimed at disentangling the common drivers of such an important phenomenon – the e-services availability and usage across European countries. As such, this work appears useful to inform the policy debate and practice, in a phase characterized by a prospective reorientation of the public e-services provision and policy agenda.     

一种高精度的频率标准比对系统

频率标准源可以提供精确的标准频率,在测定频率标准源的各项性能指标时,要求测试系统必须具有很高的比对精度。所设计的频率标准比对系统采取多级倍频 混频方式使频率偏差逐级扩大后再测量,从而避免了直接进行高次倍频的困难,提高了测量精度,可以对高精度的频率标准的准确度、长短期频率稳定度进行快速测量,是一种高精度时畴参数测量系统。     

Indigenous peoples’ nutrition transition in a right to food perspective

In indigenous communities the nutrition transition characterized by a rapid westernization of diet and lifestyle is associated with rising prevalence of chronic disease. Field work and literature reviews from two different policy environments, Argentina (Jujuy) and Canada (Nunavut), identified factors that add to indigenous peoples’ disease risk. The analytical framework was the emerging human right to adequate food approach to policies and programmes. Indigenous peoples’ chronic disease risk tends to increase as a result of government policies that infringe on indigenous peoples’ livelihoods and territories, undermining their economic system, values and solidarity networks. Policies intended to increase food security, including food aid, may also fuel the nutrition transition. There is a need to explore further the connection between well-intended policies towards indigenous peoples and the development of chronic diseases, and to broaden the understanding of the role that different forms of discrimination play in the westernization of their lifestyles, values and food habits. Food policies that take due account of indigenous peoples’ human rights, including their right to enjoy their culture, may counteract the growth of chronic disease in these communities.     

HSE走进中国石油

企业管理水平的好坏直接影响着企业的经济效益,运用HSE管理能提高企业管理水平,HSE管理模式将健康,安全,环境三者视为一个有机的整体。HSE管理认为人的安全是第一位的,人是创造财富的原动力,是企业的最大财产,HSE管理体系强调的是“蝴蝶效应”。