LS系列硫磺回收催化剂工业装置使用总结

对比总结了LS系列催化剂的使用情况，结果表明，在一级转化器均装填LS-931Al2O3基催化剂的前提下，二级转化器上部装填LS－971脱氧保护型催化剂，下部装填LS－811Al2O3催化剂后，与单纯使用LS－931催化剂相比，单器转化率由64．1％提高到70．1％，有机硫水解率由96％提高到接近100％，两项合计使装置总硫转化率由95．1％提高到96．2％，若与两个转化器全部使用LS－811催化剂相比，则装置总硫转化率可由94．49％提高到96．2％使用效果更加显著。     

苯酚标准贮备液稳定性实验

实验表明，苯酚标准贮备液放置一年后是稳定的，经统计检验无显著差异。     

喷钙脱硫灰在高温条件下的稳定性研究

对喷钙脱硫灰在高温条件下的稳定性进行了研究，通过对不同CaSO3,CaO含量的脱硫灰在不同气氛下CaO3的分解规律来考察其稳定定性。结果表明，温度和灰中CaO对脱硫灰的稳定性有直接影响。CaO3的分解率随温度的升高而升高，随CaO含量的增多而降低；气氛中含有氧气对其稳定性有重要作用，氧气能使其生成性能稳定的CaSO4，因此，高温利用脱硫灰时，在1150℃以下，空气中仅有极微量的SO2放出，不会对环境造成危害。     

Solubilization of substituted indole compounds by beta-cyclodextrin in water

The solubilization of four pairs of substituted indole compounds (SICs) by β-cyclodextrin (β-CD) in water was investigated. The results show that 1,2,3,4-tetrahydrocarbazole and N-methyl-1,2,3,4-tetrahydrocarbazole form 1:1 inclusion complexes with β-CD, while the other six SICs form 1:2 inclusion complexes, respectively. To each pair of SICs with similar structures, the differences between their solubilization in β-CD/water solutions has been explained by the difference of their contact area within the β-CD cavity, the difference of their molecule polarity, or the presence of hydrogen bond between SIC molecule and β-CD molecule.     

周庄水体内源磷负荷释放规律及其稳定性研究

以周庄河道内源磷负荷为对象，通过实验室模拟，研究了上覆水pH值，溶解氧及环境温度对内源磷释放的影响。结果表明，pH值5．0-9．5，上覆水中的磷浓度随pH值的升高而增加；在不同溶解氧释放条件下，缺氧促进内源磷的释放，好氧抑制磷释放，其抑制能力和pH值相关。pH值7．0～9．5，好氧的抑制效果明显：在好氧的条件下。高的溶解氧会增加磷的释放；温度和上覆水中总磷平衡浓度的对数呈正线性关系。采用Golterman分类提取方法，对不同释放条件下各形态内源磷的稳定性进行了考察。     

Assessment of the physico-chemical behavior of titanium dioxide nanoparticles in aquatic environments using multi-dimensional parameter testing

Assessment of the behavior and fate of engineered nanoparticles (ENPs) in natural aquatic media is crucial for the identification of environmentally critical properties of the ENPs. Here we present a methodology for testing the dispersion stability, ζ-potential and particle size of engineered nanoparticles as a function of pH and water composition. The results obtained from already widely used titanium dioxide nanoparticles (Evonik P25 and Hombikat UV-100) serve as a proof-of-concept for the proposed testing scheme. In most cases the behavior of the particles in the tested settings follows the expectations derived from classical DLVO theory for metal oxide particles with variable charge and an isoelectric point at around pH 5, but deviations also occur. Regardless of a 5-fold difference in BET specific surface area particles composed of the same core material behave in an overall comparable manner. The presented methodology can act as a basis for the development of standardised methods for comparing the behavior of different nanoparticles within aquatic systems.     

Use of bifurcation analysis for identification of a safe CSTR operability

Exothermic reactions are the most interesting systems for safety analysis because of their potential safety problems and the possibility of exotic behavior like multiple steady states. An operability and safety analysis of an exothermic reaction (hydrolysis of propylene oxide to tri-propylene glycol with consecutive reactions in a CSTR) with cooling is reported in this work. The information obtained from the bifurcation diagram is used to identify a set of unsafe operation points, which have been chosen on the base of requirement of maximal production of the process. An important information of safe reactor operation is the time in which the operator must handle a critical situation. For this reason, dynamics simulation of a failure in the cooling medium flow rate has been done and discussed for each of the selected operation points.     

三峡库区场地建筑安全评价研究

三峡水库自 2 0 0 3年蓄水后 ,水对斜坡 (滑坡 )的软化作用和库岸再造大大改变了库区的工程地质条件 ,库区的地质灾害严重制约了库区移民迁镇工程 ,场地建筑安全评价显得尤为重要。笔者根据库区工程地质的特点 ,提出了场地建筑适宜性评价的指标体系 ,建立了场地建筑安全评价人工神经网络模型。通过对红石包滑坡进行各种工况下的稳定性评价 ,利用稳态坡形、坡角工程地质类比法对红石包进行库岸再造的预测 ,对三峡库区巴东县新城区红石包油库建筑进行安全评价。为库区移民迁镇工作提供科学依据。     

危岩块体稳定性分析的蒙特卡罗边界法

在危岩块体的稳定性的可靠度分析中,本文采用了一种新的可靠度分析方法──蒙特卡罗边界法．并将此方法应用于清红电站V#号危岩块体的计算和稳定性评价,其结果与实际监测成果基本吻合．     

韩城电厂边坡变形机理及稳定性分析

本文采用工程地质勘察方法，揭示韩城电厂边坡的变形机理，并用弹塑性有限元对边坡进行了稳定分析，取得了与实测变形值一致的结果。