软弱岩层巷道光面爆破参数的计算分析

根据软岩巷道光面爆破的原则及光爆机理，对光面爆破的不偶合指数，药卷直径，光爆周边眼距，炮孔深度，装药量，爆破方式等进行了分析，通过理论推导给出光爆参数的计算办法，并同时给出经验参考取值范围，以便相比较选最佳值，最后提出几个需说明的问题。     

太阳能固体吸附式供热与制冷联合运行装置的研究

主要从吸附式制冷的机理、循环方式的研究入手,构建装置系统内可逆外不可逆四热源的系统数学模型,对太阳能固体吸附式供热与制冷联合运行装置系统的研制进行了探讨.     

Metal hydride work pair development and its application on automobile air conditioning systems

INTRODUCTION Metal hydrides are special alloys which absorb and desorb hydrogen reversibly. At room temperature, metal hydrides could absorb as much hydrogen as liquid hydrogen of the same volume under much lower pressure and much higher temperature (Güther and Otto, 1999). Massive reaction heat is generated accompanying this reaction, which could be used for waste heat recovery, solar energy utilization and re-frigeration with no side effect to environment (Izhvanov et al., 1996). Con…     

Recovering metals from printed circuit board scrap by a mechanical separation process

A mechanical separation process was developed for recovering metals from printed circuit board （PCB） scrap; it included three steps： impact crushing, sieving and fluidization separation. The mechanism of the technique was based on the difference in the crushabilities of metallic and nonmetallic materials in the PCBs that led to the concentrated distribution of metals in particles of larger sizes and nonmetals mostly in particles of smaller sizes. It was found that crushed PCB particles from 0.125 mm to 1.000 mm contained about 80% of metals in the PCBs. Metals acquired satisfactory liberation in particles smaller than 0.800 mm. The crushed PCB particles were sieved into fractions of different size ranges. Each fraction separately went through a gas-solid fluidized bed operating at a selected optimal gas velocity for the specific size range. Approximately 95% of metals in printed circuit board particles from 0.125 mm to 0.800 mm was recovered by the gas-fluidized bed separator at the selected optimal gas velocity. However, separation of metals from particles smaller than 0.125 mm was not satisfactory. Further study is needed on metal recovery from fine particles.     

近代的冰雪运动工具——冰床

冰床即现代所谓的雪橇,在宋代的沧、霸州等与北方少数民族接壤地区已见使用。明清时期的京、津地区,乘坐冰床已成为冬季户外娱乐方式之一。在清代北京城,冰床已逐渐演变为冬季民俗事象之一。明清文学作品中有不少吟咏冰床的诗作。     

EXPERIMENTAL STUDY OF GAS—SOLID SUSPENSION FLOWS IN VORTEXING FLUIDIZED BED CHAMBER FREEBOARD

Gas flows and particle mass flux were measured and clutriation experimentswere conducted in two cold test models of vortexing fluidized bed(VFB).The experimen-tal results show that the secondary air injected tangentially creates strong vortexes,estab-lishes particle suspension layers and internal circulation,and suppresses the elutriation offine particles greatly.The vortexing fluidized bed combustion has bright prospect bccauseof its much higher combustion efficiency and desulphidation efficiency than bubblingfluidized bed combustion due to long particle residence time and high slip velocity betweengas and solid,and its simpler configuration and lower cost than circulating fluidized bedcombustion.     

高纯碳酸锶纳米粉体制备的新工艺研究

以八水氢氧化锶和二氧化碳为原料，开发了在超重力旋转床反应器中直接碳化合成高纯纳米碳酸锶新工艺，对反应物浓度、旋转速度和表面活性剂添加量等影响因素进行了研究，结果表明，控制适当的工艺条件，可得到平均粒径小于80mm、主含量大于99％，比表面积大于14m^2／g的产品。     

《化学工艺》专业信息化资源建设——《流化床干燥操作单元》

介绍了辽宁省专业信息化资源建设项目《化学工艺》——《流化床干燥操作单元》的开发背景、流程、原理和操作。     

洁净煤发电技术和循环流化床锅炉的应用分析

介绍了我国能源利用现状，讨论了洁净煤发电技术，特别是循环流化床锅炉的性能特点，分析对比了容量相同的35t／h循环流化床锅炉和链条炉的燃煤经济性、SO2、NOx及烟尘的排放性能，指出循环流化床燃烧是一项可优先发展的洁净煤燃烧技术。     

快速连接气压传动柔性教学实验台的开发与研制

该文介绍了快速连接气压传动柔性教学实验平台的设计理念、实验台的结构以及实验台可完成的实验项目。平台重点从培养学生创新意识、综合运用知识、分析解决工程实际问题能力的角度出发,给学生一个柔性的实验空间。该实验平台通过手动控制、PLC控制、计算机控制,实现各种气压传动回路功能。同时也是本科生课程设计和毕业设计实验、硕士研究生和博士研究生论文实验的理想实验平台。