基于改进型BP神经网络的湿重软测量

针对制浆造纸工业中湿重无法在线测量的难题，分析了湿重值与进浆流量、打浆浓度、打浆电流及原湿重值等参数的关系。提出了基于改进型BP神经网络的湿重软测量技术。成功的完成了湿重在线检测。     

In-Situ Wet Chemical Composition of Multicomponent Precursors to Blue Emitting Sr2CeO4 Phosphors

Hybrid precursors were assembled with cerium coordination polymers, polyethyl glycohol (PEG), SrCO3 and other functional components using a modified in-situ chemical polymeric gel technology. The hybrid precursors were calcinated to achieve the Sr2CeO4 phosphors, whose particle sizes were in the range of micrometer by XRD and SEM. The photoluminescence spectra indicate that the phosphors present a strong blue emission.     

蜘蛛丝力学性能的多变性

为进一步探索蜘蛛丝的成丝机理，研究了不同个体大小，不同生存方式，不同环境湿度的大腹圆蛛牵引丝的拉伸性能。结果表明，蜘蛛对其丝纤维的结构和性能具有自我调控能力，随着环境，自身条件，生存方式等成丝条件的变化，蜘蛛牵引丝的力学性能也会发生相应的变化。     

Production of phosphoric acid with low content of impurities

The present work is to study the possibility for controlled distribution of the impurities when they are decomposed by sulphuric acid to wet phosphoric acid and phosphogypsum, as well as generating technological conditions for production of clean wet phosphoric acid and its derivatives - phosphoric fertilizers, food phosphates and other phosphoric products.A coefficient of distribution D_A is introduced as a general criterion for elements dispersion. The study includes relationships between the weight ratio sulphuric acid/natural phosphate and D_A; the period of decomposition and D_A; the particle's size content of the natural phosphate and D_A. The obtained experimental data and relationships about the influence of the above discussed technological parameters on dispersion of more than 23 elements allow for control of that process in wet phosphoric acid and phosphogypsum by selecting specific technological conditions. Thus, depending on the requirements of acid's consumers and procedures for secondary processing of phosphogypsum to end-products, a selective decomposition of the natural phosphates to phosphoric acid and phosphogypsum can be carried out with content of the impurities in those products varying in narrow limits.     

PWR核电站蒸汽发生器停堆湿保养工况联氨的缓蚀作用

一、引言压水堆(PWR)核电站蒸汽发生器(SG)管材因二回路系统腐蚀产物积累发生应力腐蚀开裂,这是SG传热管破损的主要原因之一。维修和更换SG使PWR停运期间所需要的替用电力对发电站造成很大的财政负担,同时,二回路系统的腐蚀产物沉积在蒸汽发生器内,降低     

炼厂碱渣处理工艺及设计优化

针对催化裂化装置汽油和液态烃精制产生的含硫废弃物的碱渣处理，讨论了碱渣提酚、碱渣湿式氧化脱臭两种处理工艺的环境治理效果，并就碱渣湿式氧化脱臭工艺如何降低运行成本、减少污水排放等内容进行了探讨。     

Synthesis, characterization and catalytic application for wet oxidation of phenol of iron-containing clays

High-surface-area pillared clays (PILC) were prepared from naturally occurring montmorillonites by exchanging interlayer ions to polyoxocations containing (i) aluminum (Al₁₃-PILC), (ii) iron adsorpted onto Al₁₃-PILC, and (iii) iron and aluminum located within the same complex (Fe_0.8Al_12.2-PILC). The obtained Fe_0.8Al_12.2-PILCs were characterized by DR–UV–vis and IR spectroscopy, XRD, ESR, scanning electron microscopy and low temperature N₂ adsorption measurements. Important factors affecting catalyst activity and phenol removal efficiencies have been studied, i.e. the effect of pH, temperature, catalyst concentration and stability of the catalyst.     

Kinetics of phenol oxidation in a trickle bed reactor over active carbon catalyst

The wet air oxidation of phenol over a commercial active carbon catalyst was studied in a trickle bed reactor (TBR) in the temperature and oxygen partial pressure ranges of 120–160 °C and 0.1–0.2 MPa, respectively. The performance of the active carbon was compared in terms of phenol and COD destruction. The weight change of active carbon due to reaction was also measured. Finally, oxic phenol adsorption isotherms were assessed in batch conditions at 25, 125 and 160 °C. In order to use the conversion data obtained from the TBR for a kinetic study, special care was taken to check the kinetic control in the TBR experiments. Several kinetic models including power law or Langmuir–Hinshelwood expressions were considered to describe the catalytic oxidation of phenol over active carbon. The simple power law model with first order dependence on both phenol and oxygen concentration predicted satisfactorily the experimental data not only over the entire range of operating conditions studied, but also outside its validity range. Copyright © 2005 Society of Chemical Industry     

利用热管纺丝技术一步法生产FCY

利用平板型热管纺丝装置对普通高速纺丝机进行技术改造，并一步法生产出充分结晶的ＰＥＴ纤维（ＦＣＹ）。该纤维可直接用于织造，调节热管温度、热管安装位置可获得满足后道工序不同需要的ＦＣＹ。     

LiMn2O4纳米粉的湿化学合成与表征

采用湿化学方法，通过水溶液中的化学反应直接合成纳米级LiMn2O4化合物，其结构基本上为无定型，但XRD图谱中已出现LiMn2O4特征峰，说明在水溶液中已初步形成尖晶石结构，运用XRD，SEM，TG－DTA等现代检测手段对样品的性能进行进行了表征，XRD及SEM等分析结果表明，合成样品经简单热处理后，晶型结构完善，形貌规整，均匀，比表面积积显著减小，粒度明显变粗。TG－DTA热分析证明，样品在低于900℃的温度下进行热处理时，仅发生LiMn2O4的晶化过程，产物的化学组成稳定，该法合成锂离子电池正极材料LiMn2O4，具有工艺流程简单，产物的成分，结构及粒度均匀等特点。