循环流化床锅炉低温过热器和省煤器防磨改造

东南电化股份有限公司热电厂两台CG－35／5．29MXD循环流化床锅炉,从投产后运行情况来看,锅炉的低温过热器和省煤器磨损严重,为此,我们从锅炉布置结构分析,找出低温过热器和省煤器磨损的主要原因,并提出了减轻磨损的措施,经运行实践证明,改造效果好,取得较好经济效益。     

浅谈我厂循环流化床锅炉的磨损及处理

本文主要谈谈福州二化热电分厂两台循环流化床（CFB）锅炉浓相区、分离器、低温过热器以及省煤器等部位的磨损情况及处理方式,同时提出三点防磨措施。     

浅谈小型流化床锅炉的受热面磨损与防磨措施应用

文章主要探讨了小型流化床锅炉的受热面(包括埋管、对流管、水冷壁管、过热器管、省煤器管)磨损的原因,磨损的机理,分析了控制和影响磨损的因素,受热面磨损的位置,以及如何从设计安装、运行维护、检修全过程进行防止和减轻锅炉受热面的磨损.同时,具体介绍了防磨技术措施在小型循环流化床锅炉上的应用.     

膜式叉排对流受热面的换热试验及其分析

膜式叉排对流受热面的换热试验及其分析孙道祥南京动力高等专科学校一、前言当前在电站锅炉运行中，尚存在许多影响锅炉设备可用率的因素，其中比较突出的有：过热器的超温爆管，省煤器的磨损泄漏和空气预热器的堵灰——腐蚀。直接影响着电站锅炉运行的经济性。事实证明，...     

循环流化床锅炉整体配合优化的重要性

循环流化床锅炉在技术和制造趋向于大型化、成熟化的今天，它的燃烧技术，对安装和运行、正确掌握和配合是一项在发展中的技术问题。因为目前迫切待解决过热器和省煤器管柬的磨损及爆管。     

大容量锅炉四管爆漏问题

大型锅炉“四管”爆漏是目前威胁安全运行,增大检修工作量的大故障。“四管”中以过热器管和省煤器管爆漏较多。爆漏原因甚多,本文突出谈外腐蚀和磨损问题,说明机理并提出防止措施。     

锅炉管子的飞灰磨损

根据Turow电厂OP-650—b型锅炉的几年运行经验可知,锅炉管子的飞灰磨损已是波兰发电机组中的突出问题。该电厂燃用褐煤,平均发热量为1900大卡/公斤,灰分为25%,但经常出现发热量下降至1300～1500大卡/公斤,而灰分上升到30%的现象。当煤的水分是50%时,这就意味着干燥煤的灰分达50%,在发热量低的煤中甚至达60%。省煤器运行15000小时(约2.5年)后首次爆管。飞灰对管子的最大磨损发生在锅炉后墙附近,主要在对流过热器和省煤器上排     

燃气冲击波吹灰系统用于循环流化床锅炉经济效益分析

我公司使用杭州锅炉集团生产的循环流化床锅炉（NG-130／5．3-M3），尾部竖井烟道由上到下依次布置了高温过热器、低温过热器，上、下级省煤器和上、下级空气预热器。锅炉为中温次高压，设计主汽温度450℃，排烟温度为135℃。配备使用膜片式声波吹灰器，控制气源由空气压缩机系统提供，     

直鳍式省煤器在220t/h锅炉上的应用

为解决排烟温度高、低温省煤器磨损严重的问题,扬子石化公司热电厂于2001年对5#锅炉低温省煤器进行改造。本文通过螺旋肋片式、鳍片式等改造方案对比分析,最终确定选用不扩大基管直径的直鳍式省煤器,并介绍了其实际应用效果。     

低温省煤器入口烟气流场数值模拟及优化设计

以某电厂1 000MW燃煤机组锅炉低温省煤器为研究对象,利用CFD(计算流体力学)软件进行数值模拟省煤器入口烟气流场,通过对烟道结构、导流板数量、位置及尺寸优化设计来改善流场的均匀性。模拟结果表明:优化设计可以明显改善烟气流场的均匀性,减少低温省煤器的飞灰磨损,在BMCR(锅炉最大蒸发量)工况下,锅炉省煤器三个烟道理论最大磨损速度可分别降低了20.76%、51.45%和87.65%。     

翻桩器液压系统设计浅析

介绍了翻桩器液压系统,该系统很好地解决了盖既能够奇快地开又能够很慢地开的矛盾,也解决了在锁已经打开的情况下,盖仍然能够有效得到支承等矛盾。实践证明,应用效果良好。     

机务计量测试管理系统的设计与实施

利用ASP技术和Web技术,把实际工作抽象为软件设计单元,设计与实施机务计量测试管理系统,针对性地解决了日常工作中出现的仪表和计量器具超期使用的问题,实现了机务计量测试管理工作规范化、科学化。     

Attraction of carbon investments to implement the solar energy thermal utilization projects

The possibilities for attracting investments of carbon funds to implement solar energy thermal projects using solar collectors under the Clean Development Mechanism are analyzed. Calculations are performed, and it is shown that under the now-existing prices, the investments attracted will amount to about 10% of the funds required for project implementation.     

配件实行寿命管理的现状与建议

要提高机车质量,实行配件寿命管理势在必行。将寿命期结束的配件下车报废,避免因继续使用导致故障发生,是机车配件寿命管理可以发挥的作用。就机车配件实行寿命管理制度进行了分析,提出了一些建议。     

Barriers to implement extensive green roof systems: A Hong Kong study

Air pollution problems caused from the development of infrastructures are getting serious, in which air flow is reduced and heat is trapped among high-rise buildings. In order to mitigate these problems, various methods have been developed in previous studies. Extensive green roof has been identified as one of the most important means to mitigate these problems and implement sustainable development principles in the building features. Governments world-wide have been introducing various policies and regulations for promoting extensive green roof particularly for building projects. However, the existing buildings in many large cities such as Hong Kong display few extensive green roof features. Hong Kong is one of the most densely populated cities with many high-rise buildings. This paper examines the major barriers encountered in promoting extensive green roof systems for the existing buildings in Hong Kong. Case study approach is adopted to investigate how and why the barriers can hinder the implementation of extensive green roof features. Research results show that lack of promotion and incentives from governments and the increase maintenance cost are identified as the top barriers to the implementation. The paper concludes by providing further suggestions and actions that can help mitigate these existing barriers.     

西班牙建筑技术规范中关于太阳能强制应用的分析

简要介绍西班牙建筑技术规范,重点描述了其中太阳能强制应用的相关规定,并对其实施后的影响进行了分析,最后提出了针对我国太阳能应用的借鉴意义。     

太阳电池板的建模仿真与微扰并网电流的MPPT实现

在Matlab/Simulink仿真环境下利用S函数,开发了太阳电池板的仿真模型,其通用性较强,仿真速度快.该模型可以模拟不同太阳辐射度、环境温度、以及不同串并联连接时的光伏阵列Ⅰ-Ⅴ特性,与实际太阳电池的工作特性非常接近,在光伏系统的理论分析和工程设计中能提供很大的方便.提出了一种基于微扰并网电流的最大功率点跟踪(MPPT)控制算法,并对此MPVT算法进行了验证和测试.     

浙江省资源综合利用企业(项目)认定实施办法

编者按 :为进一步贯彻落实《国务院批转国家经贸委等部门关于进一步开展资源综合利用意见的通知》(国发 [1 996 ]3 6号 ) ,促进浙江省资源综合利用企业的健康发展 ,根据国家经贸委《资源综合利用认定管理办法》(国经贸资源 [1 998]71 6号 )等文件精神 ,结合浙江省近两年来开展资源综合利用认定工作的实际 ,浙江省经贸委、浙江省国税局、浙江省地税局联合制定了《浙江省资源综合利用企业 (项目 )认定实施办法》 ,现全文刊登如下 ,要求浙江省辖区内企业单位认真贯彻执行     

Potential applicability of CNT and CNT/composites to implement ASEC concept: A review article

It is believed that the successful implementation of the Antenna Solar Energy Conversion (ASEC) to the commercial level would revolutionize the solar energy utilization. Screening suitable materials and technologies by analyzing potential pros and cones all the way to commercial level would conserve much time and resources. Here carbon nanotube (CNT) known as the material of the 21st century is evaluated concerning many aspects to implement ASEC concept. Thermomechanical and electrical properties of CNT as regards to ASEC, interaction of CNT and CNT arrays with optical spectrum and existing and future CNT technologies that have the potential to overcome possible future obstacles are discussed. The economic aspects which govern the future of ASEC concept, with CNT as a basic material are also discussed.     

ASEAN-EU energy cooperation: sharing best practices to implement renewable energy sources in regional energy grids

The promotion of the energy security condition is one of the main aim of the cooperation between ASEAN and EU within the Plan of Action 2018-2022. The implementation of a regional integrated energy market among Southeast Asian countries will be the main driver to realize the ASEAN Economic Community, providing regular energy supplies (without disruptions) in order to meet the growing energy demand which will support the expected economic growth in the ASEAN region.We can observe that ASEAN and EU share the same approach in terms of diversification of the energy mix and the development of a regional energy grid, mainly fuelled with renewable sources (RES): as a matter of fact, the project to create an ASEAN Power Grid follows the EU attempt to create an EU-Mediterranean electricity ring, developing regional interconnections and producing “clean electricity” through RES (mainly solar and wind). Moreover, ASEAN initiatives to increase energy interconnectivity through the implementation of the Trans-ASEAN Gas Pipeline and Liquefied Natural Gas (LNG) regasification terminals are conceived as a way to reduce their dependence on coal (using gas as a transit fuel) as well the promotion of clean coal technologies.The aim of this paper is to analyse the potential evolution of this ASEAN-EU cooperation in the energy field and how sharing best practices and promoting a bilateral dialogue will support ASEAN countries to enhance a long-term renewable energy cooperation. ASEAN has set a target of securing 23 percent of its primary energy from renewable sources by 2025 and the EU initiatives and policies on RES (which accounts for 17 percent of energy consumed and 30 percent of the energy mix necessary to produce electricity) will be an interesting framework to work together on the achievement of the common goal of combating climate change.