电站锅炉神经网络燃烧诊断系统应用研究

先进的燃烧诊断技术可以有效地提高电站锅炉运行的经济性和安全性,本文通过对炉膛火焰的图像采集,利用计算机数字图像处理技术及人工神经网络模型分析方法,开发了永安电厂5号炉的火焰图像燃烧诊断系统。该系统为运行人员提供了有意义的定量化特征参数,并对燃烧状况辩识的机理进行了富有成效的探索,为电站锅炉的燃烧诊断和优化控制提供新方法和新途径。     

铜分子筛协同等离子体脱除氮氧化物的实验研究

利用填充有催化剂颗粒的低温等离子体反应器来脱除氮氧化物(NOx)是一种高脱硝率、应用前景广阔的技术，研究其脱除特性对于选择合适的催化剂和运行条件非常重要．建立了低温等离子体一催化协同脱除NO的实验系统，通过实验研究了Cu分子筛、等离子体的作用与O2、温度、水蒸气等因素之间的相互影响规律．结果表明，Cu分子筛催化剂是一种有效的催化剂，它对NO的等离子体脱除效率有很大促进作用；Cu分子筛能够促进NO的等离子体氧化脱除；温度对Cu分子筛和等离子体所起的作用相反；Cu分子筛能够促进水蒸气的等离子体化，提高脱硝率．     

Coal Liquefaction by Using Dielectric Barrier Discharge Plasma

An innovative method for coal liquefaction by using dielectric barrier discharge (DBD) plasma in a short reaction time was developed. Using tetralin as the reaction medium, DBD plasma as the energy source, and a reaction time of 10 min at 140 o C, up to 10% of coal was converted to liquid material. The results showed the feasibility of coal’s liquefaction by DBD plasma under relatively moderate conditions. Simultaneously, it was clarified that the effect of DBD plasma treatment was opposed to the thermal effect of heating. An acid plasma sheath could be formed on the coal powder surface in DBD conditions, liquefied reactions could be carried out in the absence of inorganic acid, and the products were nearly neutral and with low causticity.     

等离子体射流在磁场作用下的特性模拟

磁流体发电是一种高效、低污染的发电技术。相对于其他发电方式，磁流体发电具有输出功率大、结构紧凑的优点，在高功率电源应用领域有不可替代的性能优势。文中提出采用非平衡等离子体射流的方式产生等离子体，进行磁流体发电的设想。通过数值模拟研究了等离子体射流在横向磁场作用下的特性，并通过试验对模型计算结果进行了验证。模拟研究说明横向磁场对等离子体射流有阻滞作用，在没有外电流回路的情况下，射流气体的动能转化为热，随外加磁场强度的增加，阻滞作用越强，速度减慢越明显；等离子体射流在磁场作用下电流密度主要集中在射流出口附近，并随着外加磁场强度增大而增大。     

钠在煤燃烧初期释放特性的多元相关分析

煤燃烧时钠的释放是造成增压流化床（PFBC）烟机腐蚀及锅炉尾部烟道结垢的主要原因。应用多元相关分析参数方法中的偏相关系数法对钠在煤燃烧初期的释放特性进行了研究，结论为钠的各种存在形式之间在煤燃烧初期存在着线性相关性，而这种线性相关性在不同的煤种温度和气氛下有所不同。同时应用回归方法对这种线性相关性进行了描述。     

等离子体技术转化煤的应用

介绍等离子体的发生机理和等离子体技术在煤炭转化领域的应用,包括煤的热解、气化、液化、发电及煤的脱硫脱硝等,介绍该技术的应用研究现状、存在问题及发展前景,指出等离子煤转化是一种高效、洁净的技术,在煤化工等领域具有巨大的应用空间。     

等离子体脱硫脱硝研究

文中综述了等离子体脱硫脱硝的重要成果,总结了国内外应用等离子体技术脱硫脱硝的反应机理,特性及其发展,最后对该技术的前景作一展望。     

管内气液两相流动的绕流圆柱压差-涡轮流量测量

提出了绕流圆柱压差-涡轮联合测量气液两相流的方法,研究了管内气液两相流的绕流圆柱压差-涡轮流量测量特性。以计算机为检测手段,进行了容积含气率分别为0、0.3、0.5、0.8和1.0两相流工况的测量,在分析实验数据的基础上,建立了气液两相流的绕流圆柱压差-涡轮流量测量方程,获得了气液两相流的绕流圆柱压差-涡轮流量测量方程的特性。     

Mechanism and Kinetics Analysis of NO/SO2/N2/O2 Dissociation Reactions in Non-Thermal Plasma

The kinetics mechanism of the dissociation reactions in a NO/SO2/N2/O2 system was investigated in consideration of energetic electrons＇ impacts on a non-thermal plasma. A model was derived from the Boltzmann equation and molecule collision theory to predict the dissociation reaction rate coefficients. Upon comparison with available literature, the model was confirmed to be acceptably accurate in general. Several reaction rate coefficients of the NO/SO2/N2/O2 dissociation system were derived according to the Arrhenius formula. The activation energies of each plasma reaction were calculated by quantum chemistry methods. The relation between the dissociation reaction rate coefficient and electron temperature was established to describe the importance of each reaction and to predict relevant processes of gaseous chemical reactions. The sensitivity of the mechanism of NO/SO2/N2/O2 dissociation reaction in a non-thermal plasma was also analysed.     

利用爆炸能发电的研究进展

介绍了利用爆炸能发电的研究进展，概述了其原理及发电装置。