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旋流脱液 1

无机颗粒 1

有机废液 1

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Preparation and photocatalytic kinetics of nano-ZnO powders by precipitation stripping process

ZHANG Dongxiang, XUE Min, XU Hang, XU Wenguo, TARASOV V

《化学科学与工程前沿（英文）》 2008年第2卷第3期页码 319-324 doi: 10.1007/s11705-008-0051-y

摘要： Ultra-fine zinc oxalate powders were prepared through a precipitation stripping method with bis(2-ethylhexyl) phosphate (HDEHP) diluted by tetrachloride carbon as the extractant, and oxalic acid ethanol aqueous solution as the re-extractant and precipitator. Zinc oxide powders were obtained by decomposing zinc oxalate powders at 450°C. The prepared zinc oxide powders were characterized by transmission electron microscope (TEM), Scanning electron microscope (SEM), Thermogravimetric analysis (TG), X-ray diffraction (XRD) and Fourier transmission infrared (FT-IR) spectrum. The photocatalytic performance of methylene blue by zinc oxide was studied based on the Langmuir model and Photo-Layer model. The results show that some zinc oxide powders were micro-multipore materials with hexagonal crystal. The particle size was around 32 nm. The photocatalytic process was the control step in the chemical reaction. The photo catalytic process followed pseudo-first order kinetics and •OH concentration inside the photo-layer in different reaction condition were calculated according to the Photo-Layer model.

关键词： 2-ethylhexyl micro-multipore Photo-Layer hexagonal methylene

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Successful infrainguinal revascularization with autologous vein for inadvertent stripping of superficial

Yin XIA MD , Dan SHANG MD, PhD , Qin LI MD , Wenyi LI MD , Hanqing WU MD , Guofu HU MD , Chao YANG MD , Yiqing LI MD , Bi JIN MD ,

《医学前沿（英文）》 2009年第3卷第3期页码 375-378 doi: 10.1007/s11684-009-0048-z

摘要： A referral patient who had previously undergone varicose vein surgery was admitted as an emergency case. On admission, the patient complained of intolerable pain, paralysis and paresthesia of the affected limb, which was characterized by acute arterial ischemia symptoms. Color Doppler of the artery of the affected limb indicated that no blood flow signal existed in the superficial femoral artery. During exploratory operation, we found that the right superficial femoral artery instead of the great saphenous vein of the affected limb had been stripped and ligated. Therefore, the intact right great saphenous vein was taken for auto-transplantation by inverse end-to-end anastomosis to the proximal and distal residual superficial femoral artery, which resulted in gradual recovery. Except for ischemic reperfusion injury, no other post-operative complications occurred after a 10 month follow-up; however, the long-term curative effect needs further observation. Here we report our treatment experience.

关键词： revascularization saphenous vein end-to-end anastomosis stripping

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含高浓度无机颗粒的有机废液分离及回用技术 Article

汪华林, 付鹏波, 李剑平, 黄渊, 赵颖, 姜来, 方向晨, 杨涛, 黄朝晖, 黄诚

《工程（英文）》 2018年第4卷第3期页码 406-415 doi: 10.1016/j.eng.2018.05.014

摘要：

有机废液的无害化、资源化处理是环境工程的前沿之一，随着化学品需求不断增加，石油、煤和天然气转化中排放的含高浓度无机污染物的有机废液问题更趋严重。本文通过同步高速摄像技术发现了三维旋转湍流场中颗粒物高速自转和翻转现象，自转速度高达2000~6000 rad·s-1，利用这一现象发明了颗粒物孔隙中有机物旋流自转脱除方法，开发了废液中有机污染物旋流自转回收、无机颗粒物气流加速度分级回用的工艺流程，并成功应用于中国石化第一套自主研发的沸腾床渣油加氢工程示范装置中。该技术与美国T-STAR含废催化剂的有机废液固定床气提技术相比，同温度下催化剂颗粒脱液效率最高可提高44.9个百分点，实现95%脱液效率的处理时间从1956.5 s降低到8.4 s，并实现了外排催化剂颗粒按活性分级进行回用。提出了200万吨/年沸腾床渣油加氢装置的外排有机废液控制及无机颗粒回收利用技术方案，预期可回收柴油3100吨/年，高活性催化剂颗粒647吨/年，降低装置新鲜催化剂消耗量518吨/年，直接经济效益3728万元/年，具有显著的经济、社会和环境效益。

关键词：有机废液无机颗粒旋流脱液颗粒自转气流加速度分选