生活垃圾焚烧发电项目环境影响评价要点研究

本文立足于生活垃圾焚烧发电项目要求,从多个角度详细介绍了项目环境影响评价的要点,包括污染源评价、选址要求等,并介绍了支持保障策略,希望能够为未来生活垃圾焚烧发电提供理论支持。     

Wind power potential assessment for three buoys data collection stations in the Ionian Sea using Weibull distribution function

The present article utilizes wind measurements from three buoys data collection stations in Ionian Sea to study the wind speed and power characteristics using the Weibull shape and scale parameters. Specifically, the site dependent, annual, and monthly mean patterns of mean wind speed, Weibull parameters, frequency distribution, most probable wind speed, maximum energy carrying wind speed, wind power density and wind energy density characteristics have been analyzed. The Weibull distribution was found to represent the wind speed distribution with more than 90% accuracy, in most of the cases. Moreover, the correlation between the percentages of times the wind speed was above cut-in-speed and the measured mean wind speed for the three selected sites, as the correlation between the aforementioned percentages and the scale parameter c were examined and were found linear. At all these sites, no definite increasing or decreasing trends in annual mean wind speed values could be detective over the data reporting period. The mean values of wind speed, scale parameter, most probable wind speed, maximum energy carrying wind speed, wind power and wind energy density values showed higher values during winter time and lower in summer time in Pylos and Zakynthos. Moreover, Pylos and Zakynthos were found to be the best sites from wind power harnessing point of view.     

燃煤电厂汞排放控制技术研究

近年来，燃煤电厂烟气中的汞成为继SO2、NOx和烟尘之后又一公认的大气环境污染物，我国已正式立法控制燃煤电厂汞排放，这使得燃煤电厂汞排放技术的研究迫在眉睫。不同形态汞的理化性质不同，元素态汞（ Hg0）较之氧化态汞（Hg2＋）和颗粒态汞（Hgp）更难去除，因此，脱汞的前提是提高Hg0的氧化率。介绍并简单分析了目前国内外已有的汞排放控制技术：燃烧前控制（清洁燃煤发电技术）、燃烧中控制（煤基添加剂技术和炉膛喷射技术），和燃烧后控制（利用现有的烟气控制设备协同控制），并对我国脱汞技术发展方向提出了展望。     

燃煤电厂脱硝还原剂选择原则及用量计算

面向燃煤烟气氮氧化物控制过程，详细阐述了燃煤电厂脱硝技术还原剂选择原则，对不同还原剂方案进行综合比较。根据SCR、SNCR和SCR／SNCR联合工艺三种不同工艺，重点对还原剂用量计算方法进行了综述，为工程技术人员提供参考。     

Indigenous Power Struggles in the Peruvian Amazon: A Spatio-cultural Analysis of Communication

It is well established that external national policies and internal ethnic politics contribute to indigenous power struggles that create a disharmonious indigenous voice. The purpose of this paper is to interrogate how such fissures intersect with internal, covert communication forces embedded in indigenous communities. Based on a case study of Peru’s national indigenous Amazonian organization Asociación Interétnica de Desarrollo de la Selva Peruana (AIDESEP or the Interethnic Association for the Development of the Peruvian Rainforest), the authors advance a geographical perspective of communication to interrogate the physical and social spaces that contribute to and fragment indigenous public spheres, drawing from a content analysis of interviews and news media reports. The aim is to analyse how power—influenced by the spatio-cultural effects on communication—divided a national indigenous voice following Peru’s 2009 Amazon conflict.     

Nuclear War Investigation Related to a Limited Nuclear Battle with Emphasis on Agricultural Impacts in the United States

A limited battle involving the nuclear arsenals of India and Pakistan would have significant climatic impacts upon agricultural crop production in the United States; corn, soybeans, and winter wheat yields would be significantly reduced in the Corn Belt region of the US. The most severe impacts would occur during the second year after the modeled nuclear battle.     

Local voices on renewable energy projects: the performative role of the regulatory process for major offshore infrastructure in England and Wales

There is currently a considerable emphasis on delivering major renewable energy infrastructure projects. Such projects will have impacts on local communities; some impacts may be perceived as positive but others will be viewed more negatively. Any just regulatory process for considering and permitting such infrastructure will need to heed the concerns that local communities voice. But what counts as a local voice? In this paper it is argued that the regulatory process plays a performative role, constructing what counts as a local voice. Furthermore, this has consequences for how regulatory deliberations proceed and the outcomes of regulatory processes. The empirical basis for this argument is a study of major offshore renewable energy infrastructure in England and Wales and the way that it is regulated through a specific regime – the Nationally Significant Infrastructure Projects (NSIPs) regime established by the Planning Act 2008. Through a detailed study of eight projects that have passed through the regime, the analysis unfolds the way that the voices of local residents, local businesses, local NGOs and local authorities are constructed in the key boundary object of the Examining Authority’s report; it then draws out the implications for the mitigation measures that are negotiated. The research suggests that what counts as a local voice is constrained by how the performative role of the NSIPs regulatory regime differentiates between interests and suggests that new ways of giving voice to local people are required.     

在线飞灰测碳仪在燃煤锅炉中的应用

介绍了在线飞灰测碳仪工作原理和系统结构，通过其在中石化某自备电厂燃煤锅炉的实际应用，说明了燃煤锅炉使用在线飞灰测碳仪后，锅炉司炉能随时掌握飞灰含碳量波动情况，及时调整风粉比，合理控制飞灰含碳量指标，从而降低了发电成本，提高了机组运行的经济性。     

中美燃煤火电厂空气污染物排放标准比较研究

本文对中美燃煤火电厂国家行业排放标准的内容设置、限值形式、监测、记录和报告规定,以及固定源排污许可证中如何执行排放标准进行了比较。相对于美国,中国燃煤火电厂国家行业排放标准文本内容过于简略,限值形式设置单一,主要采用全国统一的浓度限值而不是采用绩效限值;浓度限值的制定基于部分样本源而不是全部源的数据,很难体现行业的排放控制技术水平;达标判据不科学,也过于严格,小时均值的考核方式影响了火电厂的生产安排;排放标准中监测配套规定单薄,与环境监测的一般规定衔接性不佳,针对性差;记录和报告要求缺位,不能满足排污许可证管理的需求。建议参照美国行业排放标准的内容形式,排放限值采用绩效限值形式,并规定长平均周期的考核要求,将与之配套的监测、记录和报告要求纳入排放标准,以满足固定源排污许可证制度的需求。     

The effects of sinusoidal leading edge of turbine blades on the power coefficient of horizontal-axis wind turbine (HAWT)

In order to improve the aerodynamic performance of horizontal-axis wind turbine (HAWT), a sinusoidal shape is applied to turbine blade. In this study, four types of modified blades were chosen based on variations in amplitude and wavelength of protuberance along the leading edge. Compared with the baseline model, the power coefficients (C_p) of HAWT with modified blades were improved, especially at low tip speed ratios. At low wind speed (V = 6 m/s), blades with short wavelength obtain significant improvement in C_p compared with the baseline model. As wind speed increases, this improvement decreases. In addition, turbine blade with large amplitude and long wavelength obtains better C_p values at higher wind speeds than lower ones, which have a great potential to be more superior at relatively higher wind speeds.