金属离子掺杂二氧化钛及水体光催化脱氮研究

采用溶胶-凝胶法制备了掺杂Ce^3＋、La^3＋、Ag^＋、Fe^3＋的TiO2光催化剂，以考察其薄膜和粉体形式对水中无机氮的光催化去除效果和活性．用所制备的催化剂对含氨氮-亚硝酸氮的混合液进行了光催化脱氮研究．本文利用UV—Vis吸收光谱、XRD和TEM对催化剂进行了表征．同时，对影响TiO2光催化效率的因素：如掺杂金属离子的种类、浓度、涂膜层数、反应液中有无Fe^2＋、不锈钢和玻璃载体、反应器的构型等进行了探讨，并对今后的研究进行展望．经过2h紫外光照射反应，实验最佳脱氮效果：金属离子掺杂TiO2薄膜型催化剂总氮去除率在30％左右，金属离子掺杂粉末型催化剂光催化最高总氮去除率可达41．7％．     

采用有机盐─石膏脱硫剂的烟气脱硫新工艺

介绍一种利用有机羧酸盐作为吸收剂、以熟石灰作还原剂的烟气脱硫系统，在日本投入生产运行，其脱硫效率达９０％以上。     

一种基于多核嵌入式系统的TD-LTE同步校正方法

针对TD-LTE系统中同步性错误随机发生的问题,提出了一种通过ARM+DSP+FPGA平台的嵌入式系统实现帧号和原语的同步校正方法。该方法基于TD-LTE射频一致性测试仪表硬件平台,通过该嵌入式系统中ARM、DSP、FPGA间的协调工作,由GPMC模块通过帧号和原语两方面对系统同步性进行校正。在TD-LTE射频一致性测试仪表硬件平台中进行了验证,结果表明,该方法在实现帧号与子帧号同步校正的基础上明显提高了TD-LTE系统通信的稳定性。     

Liquid-Phase Transport During Removal of Organic Binders in Injection-Molded Ceramics

A method has been developed for calculating hydraulic pressures induced by thermal expansion of liquid binders early in the removal cycle, when evaporative losses are negligible and fully saturated conditions prevail. Specific results were obtained for flat compacts containing a common wax binder, mixed with varying amounts of low-density polyethylne. In general, these results show how the risk of hydraulic fracture increases with heating rate and compact thickness. Although pressures are minimal when the binder consists entirely of wax, the continual addition of polyethylene eventually gives rise to unacceptable risk levels, even for relatively thin compacts. Binder removal at elevated temperatures is considered subsequently. In this case, vapor pressures eventually approach a critical level, thereby allowing mass removal by evaporation to overcome the effect of thermal expansion in maintaining full saturation. With the onset of void formation, the developing capillary pressure supersedes hydraulic pressure as the driving force in liquid transport. Besides representing capillary flow, the present formulation also accounts for thermal degradation of the binder during removal. The resulting system of equations was solved numerically for a variety of representative debinding conditions. Predictions for flat compact containing a balanced wax/polyethylene binder indicate that thermal degradation of the polyethylene can give rise to a marked improvement in debinding rates. It turns out, however, that this enhancement is far more effective in thinner compacts.     

黄磷的物理法脱砷新方法探索研究

针对我省黄磷精制现状,研究一种黄磷除砷新方法。利用高压静电场对工业黄磷进行处理,结果显示:在电场的作用下能分离除去砷,经三级处理脱砷率可达90%以上,黄磷回收率在99.9%以上。简要介绍了此处理方法的原理及工艺。     

碱渣脱除锌冶炼烟气中SO2的工艺

利用水合肼生产过程中副产的碱渣(含Na2CO3.10 H2O)吸收锌冶炼烟气,得到结晶亚硫酸钠。重点考察了尾气中SO3含量、碱液比重、中和液pH值对脱SO2工艺、效率和产品的影响。     

气携式水力旋流器处理含聚合物污水研究

设计出一种用于处理含油污水的新型气携式水力旋流器,采用该旋流器对油田聚驱采出污水进行了现场除油实验。实验研究表明:在原水油的质量浓度为1 000 mg/L左右、聚合物的质量浓度为400～500 mg/L的条件下,最佳分流比为30%、气液比为0.45,出水油的质量浓度在100 mg/L以下。与常规旋流器相比,气携式水力旋流器提高除油效率约10%,在油田聚驱采出污水处理中具有良好的推广应用前景。     

硅通孔化学机械平坦化中铜去除的电化学与选择性研究

利用极化曲线测量法研究了甘氨酸和过氧化氢浓度及pH对硅通孔(TSV)化学机械平坦化(CMP)中铜腐蚀的影响。结果表明:甘氨酸对铜的腐蚀随其浓度增大而增强;随着过氧化氢浓度增大,铜腐蚀电位逐渐增大;在p H为10时铜的腐蚀效果最佳。CMP实验表明,在不同浓度的甘氨酸和过氧化氢之下,抛光速率可调,达1.9~5.8μm/min,铜表面粗糙度为5~29 nm,铜钽去除速率比为20~50。     

Particle-Substrate Collisions, Particle Rebound and Removal

Recent progress in particle capture and rebound and its effect on the adhesion force is reviewed in this paper. Particles rebound when the incident velocity is greater than a characteristic critical velocity. Lower impaction velocity particles experience elastic and plastic deformation. Recent models for particle rebound and capture are discussed and evaluated in terms of their restrictive assumptions and results. Recent experimental data of particle rebound and capture is also discussed, as is the hydrodynamic removal of captured particles. The removal of particles occurs when the applied hydrodynamic removal force overcomes the adhesion force. The effect of adhesion-induced deformation on the removal of particles is introduced and discussed.     

电凝聚方法处理聚氯乙烯工业废水试验

对电凝聚方法处理聚氯乙烯工业废水的效果及影响因素进行了分析研究。现场运 行结果表明,该方法试验装置对聚氯乙烯废水的处理效果较好,出水水质达到综合排放 标准,对COD,BOD和TSS的去除率分别达到95％,91％和90％;对废水流量负荷的变化 具有较好的适应性,保证出水水质稳定;装置的运行成本经济实用。