低挥发性脱漆剂的研究

以苯甲醇(BA)、丙二醇乙醚(MPA)和二丙酮醇(DKA)为主溶剂制成低挥发性脱漆剂，考察了主溶剂、促进剂的种类、用量等因素对脱漆效果的影响。实验表明：促进剂甲酸、苯酚的用量为9％时，脱漆效率可提高2～3倍；加入1．5％的液体石蜡可以降低其挥发速率，增加脱漆剂的有效作用时间。     

铁环压脱机液压系统及其控制的研究

铁环压脱机是电解铝组装车间一种必需的设备,由于铁环硬度非常大,对液压系统要求较高,文章中给出了铁环压脱机中的液压系统的设计。同时介绍了电机启动的控制电路及系统电气控制。     

低产井产量计量方法探讨

大庆油田已进人后续开发阶段,低产井数量在逐年增加,其产量的准确计量成了亟待解决的问题.现有的低产井产量计量还是采用与高产井相同的计量间分离器量油方式进行.由于低产井自身的特点,分离器量油方式不能如实反映其产能.对两种量油方式进行对比研究,通过具体应用实例表明,翻斗流量计计量低产井产量效果较好.     

无水氨汽提塔喷嘴改造

无水氨汽提塔喷嘴在高速蒸汽产生的空蚀和介质的活化腐蚀联合作用下腐蚀严重,通过材质、结构优化取得了良好的效果.     

Cold Rich Bypass to Strippers for CO2 Capture by Concentrated Piperazine

Cold rich bypass to the stripper in CO₂ capture by alkanolamines will usually reduce the total heat duty. Bypass reduces the stripping steam in the overhead vapor and balances the temperature approach in the main cross exchanger. This process improvement reduces the energy requirement of any configuration, but it is most beneficial when the overhead vapor is not already countercurrently contacted with incoming rich solution. Therefore, the 2‐stage flash configuration was evaluated in this work, and it had an improvement of 11 % over the no bypass case. Its improvement was better than what was observed with a simple stripper and interheated column. An optimized cool rich bypass for a pilot scale 2‐stage reduces the equivalent work.     

乳化液及空气吹扫装置在冷轧单机架中的应用

介绍了吹扫系统中两个关键工艺参数,分析了乳化液喷射梁、防缠导板的结构特点和功能,最后介绍了乳化液及空气吹扫装置在单机架六辊冷轧中的具体应用。     

流态化技术在催化裂化工艺中的应用进展

原油的重质化和劣质化,以及降低催化裂化汽油烯烃含量和催化裂化生产低碳烯烃的迫切需求,促进了流态化技术在催化裂化装置中应用的不断改造和创新。本文分别从反应器、汽提器和再生器等部分介绍了流态化技术在催化裂化工艺领域应用的新进展。     

水溶性有机去膜液的主要成分及其作用原理概述

文章在大量的文献基础上总结了水溶性有机去膜液的主要成分,包括有机胺、有机溶剂、加速剂、缓蚀剂和消泡剂,并介绍了各种成分在去膜过程中的作用原理。重点介绍应用于去膜液中的各类缓蚀剂及其缓蚀机理,缓蚀剂包括含氮化合物、含硫化合物、有机酸、芳香族羟基化合物等。     

Measurement of carbon sputtering yield by N ion beam and lifetime dependence of resulting foils on thickness

Carbon stripper foils with a higher nitrogen content were made by ion beam sputtering with reactive nitrogen gas. Such foils seem to be very useful as strippers for high-intensity heavy ion accelerators. To know further characteristics of the lifetime of such carbon foils, we have measured the sputtering yield of the carbon source material at a sputtering voltage of 4–15 kV and the lifetime dependence of such foils on thickness. Lifetime measurement was performed with a 3.2 MeV Ne⁺ ion beam. The sputtering yield on average showed 0.75 atoms/ion at over 9 kV sputtering voltage. The lifetime of the foils noticeably depends on the foil thickness, and the thickness range as practical stripper foil is to be around 15 to 33 μg/cm². Two foils made at 13 kV showed extremely long lifetimes of 6800 and 6000 mC/cm² at maximum and the foils made above 10 kV lived longer than about 900 mC/cm², which correspond to about 270 and 40 times longer than commercially available best foils. We measured the thickness ratio of nitrogen to carbon in each foil made at the different sputtering voltages and at the different irradiation stages (mC/cm²) by RBS method. We also inspected the structure of a nitrided carbon foil by transmission electron microscopy.     

Multilayer carbon foils for cyclotron beam extraction

The TRIUMF Applied Technology Group operates high-power industrial cyclotrons for commercial radioisotope production. Two of these cyclotrons, TR30-1 and TR30-2, are capable of accelerating H⁻ ions to an energy of 30 MeV and beam currents in excess of 1000 μA. For many years, amorphous carbon foils of approximately 2.0 μm thickness have been utilized to extract proton beams from these accelerators.Novel multilayer foils consisting of layers of amorphous and diamond-like carbon (DLC) of 2.0±0.2 μm thickness were manufactured in-house by carbon arc and pulsed laser deposition, respectively. In the TR30 cyclotrons, the new composite foils with 25% DLC content show a three times longer lifetime than the purely amorphous foils, while maintaining their excellent physical and mechanical characteristics during irradiation.