柔性聚能切割技术在废旧防坦克地雷销毁中的应用

针对我国废旧地雷爆破器材的销毁方法存在环境污染、资源浪费等问题,研究柔性聚能切割器在不诱爆防坦克地雷内部装药的前提下,快速实现装药与外壳分离的方法。研究成果为实现我国防坦克地雷中的资源回收工作奠定了基础,同时对提高我军通用弹药的销毁和处置技术具有参考价值。     

松软膨胀岩层巷道破坏机理及加固技术研究

松软臌胀岩层的井下巷道支护是目前矿山建设中的一个主要难点.针对霍州煤电集团白龙煤矿的具体条件,对井下巷道的破坏形式及破坏机理进行了分析,在此基础上,提出了合理的修复加固方案.实践表明,应用效果显著.     

Experimental and numerical investigation of tar destruction under partial oxidation environment

Tar in biomass product gas is a major problem because it reduces the reliability of the equipment and enhances pollutant emission. Partial oxidation is effective for reducing tar inside gasifiers. In order to predict tar reduction with partial oxidation technology, knowledge of the fate of tar during partial oxidation process is paramount.A continuous reactor was developed for tar destruction experiment under partial oxidation environment. Tar components and non-condensable gasses were measured and analyzed. Results show that the defined “primary tar” contents share about 60% of the total tar amounts. Phenolics prevail under initial reaction, but it is easy to form PAHs (polycyclic aromatic hydrocarbons) by polymerization reactions under certain ER (actual mass flow rate of oxygen/oxygen required for complete oxidation of biomass feed stock). This process results in an increase of tertiary tar. Hydrogen's evolution curve shows a steep rise with ER, which could be an indicator for the crack of secondary tar. A model was developed for describing partial oxidation of tar. Phenol, toluene, benzene and naphthalene were chosen as model compounds. Fluid flow, chemical mechanism and heat transfer are considered in the model. The calculated total tar amounts are in qualitative agreement with experimental results.     

Fluidized Bed GAC Filtration for the Control of Ozone Residuals

A laboratory scale study was conducted in order to investigate upflow granular activated carbon (GAC) filtration for the removal of aqueous ozone. The experimental results showed that fluidized bed GAC filtration operated at hydraulic loadings of 60 — 100 m/h is a promising process for the safe destruction of ozone residuals at the end of ozone contactors. The key parameters in terms of ozone destruction are empty bed contact time, the specific ozone destruction capability of the different GACs and the specific surface of the carbon. Ozone removal in such filters was well described with first order kinetics and external mass transfer was not limiting. Under given conditions in terms of ozone influent concentration, GAC granulometry, GAC density and bed depth, hydraulic loading and available headloss have to be traded off in order to design a well adapted and robust system.     

自愈性低电压并联电容器破坏试验条件验证

自愈式低电压并联电容器在电网中被广泛使用，为了考核其在电网中运行的可靠性．对其进行破坏试验是十分必要的。本文按国标的要求对检测中心设备能力进行了分析和完善并对不同型号和不同保护方式的产品进行了试验验证。     

自愈式低电压并联电容器破坏试验条件验证

自愈式低电压并联电容器在电网中被广泛使用 ,为了考核其在电网中运行的可靠性 ,对其进行破坏试验是十分必要的。本文按国标的要求对检测中心设备能力进行了分析和完善并对不同型号和不同保护方式的产品进行了试验验证     

废弃常规弹药销毁技术综述

在分析国内常用弹药销毁方法优缺点的基础上,分别简要介绍了近年来新兴的聚能切割、射孔弹、爆炸装置摧毁器、高热剂、导爆索切割、磨料水射流切割和高压液氮低温切割等弹药销毁领域的几种新技术,对国内废弃常规弹药销毁工作具有一定的参考价值。     

Formation of fluorine for abating sulfur hexafluoride in an atmospheric-pressure plasma environment

In this study, a large amount of toxic and reactive fluorine (F(2)) was produced in the atmospheric-pressure microwave discharge environment by adding additives to abate sulfur hexafluoride (SF(6)). When H(2) was added, the selectivity of F(2) was as high as 89.7% at inlet H(2)/SF(6) molar ratio (R(H2)) = 1. Moreover, the conversion of SF(6) significantly increased from 33.7% (without additive) to 97.7% (R(H2) = 5) at [SF(6)]=1%, and 0.8 kW because the addition of H(2) inhibited the recombination of SF(6). With the addition of O(2), H(2)+O(2) or H(2)O, the selectivity of F(2) was still greater than 81.2%, though toxic byproducts, including SO(2)F(2), SOF(2), SOF(4), SO(2), NO, and HF, were detected. From optical emission spectra, SF(2) was identified, revealing the SF(6) dissociation process might be carried out rapidly through an electron impaction reaction: SF(6)-->SF(2)+4F. Subsequently, F(2) was formed via the recombination of F atoms.     

压剪共同作用下混凝土的动态力学性能研究

为了研究混凝土在压剪复合状态下的动态力学性能,采用大型多功能动静力三轴仪进行了5种不同应变速率和5种不同法向应力下的压剪复合受力状态的剪切试验。分析其剪切强度变化规律,构建了基于八面体应力空间二次形式破环准则,转换为正应力与剪应力表示的压剪破环准则形式。结果表明,随着应变速率增加,混凝土的抗剪强度呈增大趋势,而随法向应力的增加,混凝土抗剪强度则呈现出先增大后减小的趋势;基于八面体应力空间二次形式破环准则,建立了考虑速率效应的混凝土压剪破环准则,通过试验数据对比得出该破环准则与试验数据吻合较好。     

油气藏成因模式探讨

油气藏模式是对油气藏赋存特征的高度概括，也是对油气藏形成机制和破坏作用的科学解释，油气藏模式分为描述模式与成因模式。本文依据翔实的资料。探讨并初步建立了油气藏成因模式。