利用工业分析值研究煤的燃烧特性

文中提出了一个基于工业分析的煤燃烧特性参数ＺＭ，利用该参数判别煤的燃烧特性与实验确定的实际燃烧情况极为一致，成与其它不同燃烧结论比较后，笔者认为；在纯氧气氛中煤的燃烧是以均相着火方式发生的，并且参数ＺＭ槿用来表生煤的均相着火性能，煤样在纯氧下的着火ｔｇ，ｉ和着火延迟时间τｉ均可通过经验公式予以计算。     

Fenton法在制革废水深度处理中的应用及实例

文章以广东省某皮革工业园集中污水处理厂为例进行废水处理工艺升级改造方案研究。在对该皮革工业园原有生产废水处理工艺调查和存在问题总结的前提下，经采用Fenton氧化法进行升级改造后，废水污染物去除效率明显提升，出水水质良好，能稳定达到《广东省污染物排放限值》（DB44／26—2001）一级排放标准的要求。     

Ignition control of methane fueled homogeneous charge compression ignition engines using additives

Homogeneous charge compression ignition is a new combustion technology that may develop as an alternative to diesel engines with high efficiency and low NO_x and particulate matter emissions. In this paper, the effect of additives such as dimethyl ether (DME), formaldehyde (CH₂O) and hydrogen peroxide (H₂O₂) for the control of ignition in natural-gas HCCI engines have been investigated numerically by adopting a single-zone zero-dimensional model. The chemical kinetic mechanism incorporated the GRI-3.0 mechanism that considers 53 species and 325 reactions together with the DME reaction scheme consisting of 79 species and 351 reactions. To simulate HCCI engine cycles, a variable volume computation has been performed by including a piston motion into the SENKIN code at a fixed equivalence ratio of 0.3 and initial mixture pressure of 1.5 bar. It was found that an additive-free mixture did not ignite for the intake temperature of 400 K. A mixture containing a small quantity of additives at the same temperature was ignited. For a fixed quantity of additive, it was found that H₂O₂ addition was effective in advancing the ignition timing as compared to the other two additives. It was found that the percentage of additives required to achieve a near TDC ignition timing increases linearly with the increase in the engine speed while decreases with the increase in the equivalence ratio with the superiority of H₂O₂. Furthermore, the addition of even 7% by volume of H₂O₂ could ignite a mixture at an intake temperature of 350 K, while at least the fractions of 12.5% and 35% by volume were needed for DME and CH₂O, respectively. It was also found that the mass fraction of NO with CH₂O addition was less than that with H₂O₂ addition. At the same time, however, a near TDC ignition timing resulted in a similar amount of NO for both additives. Overall, the enhanced reactivity of CH₄ in the presence of small amounts of additives could be used in HCCI engines fueled with methane to alleviate the high intake temperature requirements.     

PBT工程塑料概况及展望

综述了近年来国内外ＰＢＴ工程塑料的市场及技术进展。针对国内ＰＢＴ供应商与国外ＰＢＴ供应商的差距，提出了加强 新品种开发，提高现有品种质量水平，积极开发国内外市场和加快原料１，４－丁二醇的国产化等建议。     

发电机运行中突然进相的原因分析及对策

通过对发电机运行中突然进相的现象、原因进行分析,阐述了进相对机组的影响,并提出了应对、处理措施,取得了较好的效果。     

武钢第二炼钢厂近几年钢水成分控制的进展

介绍了武钢第二炼钢厂近几年钢水中碳和酸溶铝的含量及盛钢桶至中间包增氮的变化，以及控制这些万分所采取的措施。     

An experimental study of the autoignition characteristics of conventional jet fuel/oxidizer mixtures: Jet-A and JP-8

Ignition delay times of Jet-A/oxidizer and JP-8/oxidizer mixtures are measured using a heated rapid compression machine at compressed charge pressures corresponding to 7, 15, and 30 bar, compressed temperatures ranging from 650 to 1100 K, and equivalence ratios varying from 0.42 to 2.26. When using air as the oxidant, two oxidizer-to-fuel mass ratios of 13 and 19 are investigated. To achieve higher compressed temperatures for fuel lean mixtures (equivalence ratio of ∼0.42), argon dilution is also used and the corresponding oxidizer-to-fuel mass ratio is 84.9. For the conditions studied, experimental results show two-stage ignition characteristics for both Jet-A and JP-8. Variations of both the first-stage and overall ignition delays with compressed temperature, compressed pressure, and equivalence ratio are reported and correlated. It is noted that the negative temperature coefficient phenomenon becomes more prominent at relatively lower pressures. Furthermore, the first-stage-ignition delay is found to be less sensitive to changes in equivalence ratio and primarily dependent on temperature.     

采空区自然发火原因简析

文章分析了张双楼煤矿白石崖项目部煤层自然发火的原因,并简述了现场采取的防治措施,对类似矿井具有借鉴作用。     

洞室开挖施工中地质超前预报的现状及其探测技术

全面地论述了水电及其它工程隧洞施工中地质超前预报工作的重要性及超前预报的目的、内容等,并就当前国内外常用超前预报方法和技术的实用性及优缺点进行了综述和探讨,这将有助于隧洞施工超前预报技术在中国隧洞工程中的推广应用,总结经验,提高预测预报精度,满足工程建设之需。     

2014年我国热固性工程塑料进展

根据2014年国内公开发表的文献,综述了我国热固性树脂及其塑料的开发研究状况。2014年我国热固性工程塑料的研究开发集中在环氧树脂、聚氨酯和酚醛树脂等大品种树脂的增强增韧及功能化上。利用各种新型树脂或固化剂、无机纳米粒子或功能型助剂等对传统热固性工程塑料的改性取得了较多的成果。