影响12m^3聚合釜填料密封性能的几个因素

分析了克拉玛依石油化工厂气体分厂１２ｍ＾３聚合釜填料密封长周期无泄漏使用的几个原因,提出了使用维护及选型中应注意的几个问题。     

电化学处理废水过程中羟基自由基的测定

采用三维电极-电Fenton耦合法降解模拟苯酚废水,验证模拟苯酚废水降解过程中羟基自由基的存在,考察不同电压、起始p H值、铁粉加入量、曝气等因素对羟基自由基生成量的影响,实验结果表明:当溶液的p H为6.86(原溶液),加入3.0 g/300 m L Fe粉,5 V电压下1.5 L·min-1的曝气下电解30 min后,苯酚降解过程中羟基自由基的生成量最大。     

催化与PV双功能中空纤维复合膜制备及其应用过程

以聚丙烯腈(PAN)中空纤维膜为支撑底膜,聚乙烯醇(PVA)为渗透汽化(PV)层,全氟磺酸树脂(PFSA)-聚乙烯醇(PVA) -纳米材料(SiO2、Al2O3和TiO2)为催化层,制备了具有催化和PV双功能的PFSA- PVA- SiO2 (Al2O3和TiO2 )/PVA/ PAN中空纤维复合膜.以乙酸-乙醇酯化反...     

A three-dimensional eigenfunction expansion approach for singular stress field near an adhesively-bonded scarf joint interface in a rigidly-encased plate

A three-dimensional eigenfunction expansion approach for determination of the singular stress field in the vicinity of an adhesively-bonded scarf joint interface in a plate, with its top and bottom surfaces being encased, fully or partially, between infinitely rigid blocks is presented. The plate is subjected to extension/bending (mode I) and in-plane shear/twisting (mode II) far-field loading. Both the adhesive layer and plate materials are assumed to be isotropic and elastic. The boundary conditions that are prescribed on the end-faces (free, fixed and lubricated) of the plate as well as those, prescribed at the bottom or top surface of the scarf-bonded plate on either side of the interface between the plate and adhesive layer materials (fixed-fixed, free-fixed and fixed-free), are exactly satisfied. Numerical results include the dependence of the lowest eigenvalue (or most severe stress singularity) on the wedge aperture angle of the plate material. Variation of the same with respect to the shear moduli ratio of the constituent plate and adhesive layer materials is also an important part of the present investigation. Hitherto unobserved interesting and physically meaningful conclusions in regards to the fixed edge singularity and delamination type flaw sensitivity of an adhesively bonded plate surface are also presented. Finally, hitherto unavailable results, pertaining to the through-width variations of stress intensity factors corresponding to symmetric and skew-symmetric sinusoidal loads that also satisfy the boundary conditions on the end-faces of the adhesively bonded plate, in the vicinity of the scarf joint interface, under investigation, bridge a longstanding gap in the bonded joint stress singularity/fracture mechanics literature.     

硝基氯苯的分离

本文叙述了根据硝氯苯的物化性质蒸气压方程，设计了采用高效波纹填料的新流程，并与国内外流程装置作比较，指明了新流程和新装置的优点。．     

浅谈我国塑料包装材料的发展趋势

概述我国塑料包装材料的发展动向；并对我国塑料包装重点产品的发展方向进行了探讨；最后提出发展的对策和措施。     

高效填料塔成套分离工程技术

以总体方案、模拟计算、工艺流程、汽液传质设备、安装开车等５个基本工程步骤为线索，从工业应用角度，综述性地介绍高效填料塔成套分离工程技术的国内应用水平和发展趋势。     

应用降膜理论研究板波纹填料的持液量

采用降膜理论建立了板波纹填料的持液量模型。通过对下降液膜的受力分析 ,给出了有效重力加速度的计算方法。应用该模型对 2 50 Y型填料进行了计算 ,并和实验值进行了比较。对比表明 ,模型计算值与实验值的偏差在工程意义上都是可以接受的 ,因而模型具有一定的应用价值。     

双氧水装置精馏塔塔顶分布器的改造设计

分析散堆填料更换为高效规整填料后精馏塔操作状况不正常的原因 ,以及详细介绍对分布器的改造。     

焦炉煤气脱硫解吸塔填料国产化

上海宝钢化工有限公司二期脱硫解吸塔投入运行以来 ,日本填料的使用效果不理想 ,探讨用国产填料替代日本填料 ,从而做到优质、耐蚀、低成本 ,以满足生产需要。