中试螺旋式自循环厌氧反应器处理安乃近制药废水的稳定性能

以制药废水实验了50m3螺旋式厌氧反应器（SPAC反应器）的稳定性。采用AugmentedDickey—Fuller（ADF）单位根检验表明,螺旋式反应器具有良好的启动和运行稳定性。负荷冲击实验显示,SPAC反应器具有较好的耐浓度冲击能力和耐水力冲击能力,所能耐受的最大浓度冲击强度大于60000（mg·h）／L（进水浓度提升2倍）,所能耐受的最大水力冲击强度为300（m3·h）／d（进水流量提升50％）。SPAC反应器还具备受扰恢复能力。在反应液pH低于5．74,出水浓度、COD去除率和容积COD去除速率（VRR）分别为3500mg／L、22．30％和2．52kg／（m3·d）的工况下,经过30d恢复,出水浓度、COD去除率和VRR的恢复程度达到80％～90％。     

钛铁矿造孔核桃壳基活性炭的制备及其吸附性能

以核桃壳为原料,钛铁矿为造孔剂,制备钛铁矿造孔核桃壳基活性炭。实验结果表明：在氯化锌浓度为3mol/L、碳化时间为40min、碳化温度为400℃、钛铁矿加入量为5%的条件下,制得的钛铁矿造孔核桃壳基活性炭对苯酚、碱性品红、Pb²⁺的吸附量分别达到了156.80,181.35,35.84mg/g,比核桃壳活性炭分别提高了25.84%,18.59%,19.10%;钛铁矿作为造孔剂制备活性炭,可以降低碳化温度和缩短碳化时间,且对活性炭中孔的形成起促进作用,有利于对大分子物质和重金属的吸附去除。     

现代战争中环境监测问题的探讨

通过分析在高技术武器装备下的现代战争中环境监测工作的特点,提出要提高仪器设备的科技含量、监测应急机动能力和区域性监测能力,建立高技术环境决策支持系统,积极动员地方监测力量和增强现有技术人员素质,才能够适应战场环境,开展系统完整的环境检测工作,充分发挥环境监测作用,为战争结束后环境和生态恢复提供帮助。     

煤矿安全管理能力理论框架研究

运用文献分析和综合归纳等研究方法,对煤矿安全管理能力进行研究。通过研究得出:煤矿安全管理能力本质是一种累积专有知识的集合,是煤矿对由安全生产体系进行协调控制的过程中,诸要素相互作用形成的蕴含在煤矿内部的一种企业管理能力。具备知识属性的"人、设备、环境、制度"成为煤矿安全管理能力的构成要素,而"人的不安全行为"、"设备不安全状态"、"环境不安全条件"和"制度不安全条件"对构成要素产生不良影响,成为煤矿安全管理能力的影响因素。煤矿安全管理能力的构成要素与影响因素之间存在一种此消彼长的互动关系——构成要素越强则影响因素越弱,导致煤矿安全事故发生概率越低;构成要素越弱则影响因素越强,导致煤矿安全事故发生概率越高。     

Combustion performance and emission characteristics on HCCI engine of waste plastic pyrolysis oil biodiesel blends with external PFI and vaporiser

ABSTRACT

Analysis of plastic oil obtained from waste plastic through pyrolysis process, as an alternative to biodiesel is presented in this paper. The HCCI engine is considered for experimental validation of combustion performance and emission characteristics. To accumulate pyrolysis oil as fuel, the design modifications were made in external mixture formation on the existing computerised 4-stroke, single cylinder, water cooled, direct injection kirloskar diesel engine connected with eddy current dynamometer to satisfy HCCI conditions. HCCI engine can be worked on wide assortment of fuels beginning from diesel to different blends (WPPO 5%,10%,15% and 20% by volume) of biodiesel .The designed additional device connected to the engine is utilised for fuel vaporisation and mixture arrangement. In the experimental study, the combustion results were initiate to be of 39.69 % higher Rate of Heat Release (RoHR) for biodiesel HCCI as compared with diesel HCCI. Higher brake thermal efficiency (BTE) was found 37 % without exhaust gas recirculation (EGR) at WPPO 20 % biodiesel blend. And also found 50 % and 65 % reduction in NOx emission and 18 % and 28 % reduction in smoke opacity are obtained for biodiesel vapour induction without EGR and biodiesel vapour induction with 15 % EGR as compared with diesel fuel. The CO (0.34 %), and UHC (2.15 %) emissions are increases with 15 % EGR, but the emissions are within the standard limits specified by the emissions standards.     

About stability of the ignition process of small solid particle

The distributed mathematical model of magnesium particle ignition is developed taking into account the heterogeneous chemical reaction and the domain of particle thermal influence on gas. The problem solvability in the stationary case has allowed one to expand classification of regular modes of heating as well as the modes of extinction and ignition of a particle. The limiting size of a gas layer near a particle is found that determines an ignition mode. It is shown that the ignition delay time grows if we take into account the gas layer near the particle. Stability of some heating modes within the framework of finite and infinitesimal perturbations is studied. An opportunity to control the ignition process by high-frequency thermal action on the unstable particle gas states is shown.     

城市应急能力评估指标体系核心项处理方法研究

在城市应急能力评估体系的基础上，分析了类、属性以及特征的关系，明确了属性在其中的重要性，建立了以改进的层次分析法为基础城市应急能力评估指标体系权重计算方法，指出权重与核心项之间的关系，确定以第75百分位数作为城市应急能力评估体系属性核心项判定标准，经过专家计算，确定了20项城市应激能力评估体系属性的核心项，为顺利开展城市应急能力评估奠定了基础。     

安全煤岩柱性能研究及综合评价

在对里彦煤矿采矿地质条件分析的基础上,对安全煤岩柱的化学成分及其阻水性能、岩性及力学特征进行了研究.针对里彦煤矿的具体情况,分析了里彦安全煤岩柱的阻水性能,认为其阻水性能良好,可以适当减小防水防砂煤岩柱宽度,以提高开采上限,释放部分煤炭储量.     

Transfer of powders into flammable solvents overview of explosion hazards and preventive measures

This paper evaluates and analyses the explosion hazards associated with transfer operations of powders into large containers, hoppers and reactors, which may also contain flammable solvent vapours. The formation and characteristics of explosive atmospheres and the occurrence of process inherent ignition sources, such as static electricity are described. The most commonly applied preventive measures and technical equipment are outlined and discussed including their advantages and disadvantages.     

伪装涂料抗老化技术研究

从理论上分析了涂料的老化机理．介绍了伪装涂料抗老化技术的研究现状及高耐候性伪装涂料的最新进展,指出了伪装涂料抗老化技术的发展趋势。