摘要：Mass transfer and catalyst recovery are two crucial issues in solid base catalysis,while the cumbersome operation steps and the associated time and energy penalties are still inevitable for conventional *** the technical upgrades through catalyst design is desirable but challenging because of the difficulty in satisfying diverse demands of different *** this work,a magnetically responsive solid base catalyst with the rod-like nanostructure was *** rod-like solid base catalysts are composed of Fe_(3)O_(4) cores,silica shells and calcium oxide active *** functions of magnetic recovery and stirring were integrated into the catalyst,which applies in both the general catalytic processes and microchannel reactors given their *** applied to the synthesis of dimethyl carbonate by onestep transesterification of methanol and ethylene carbonate,an apparent enhancement on turnover frequency value(33.1 h^(−1))was observed for nano-stirring compared with that tested without stirring(12.1 h^(−1))within 30 *** present catalysts may open up new avenues in the development of advanced solid base catalysts.

摘要：Due to the good controllability and high energy efficiency in adsorption processes,photoresponsive adsorbents are intriguing for CO2 ***,most reported photoresponsive adsorbents are designed based on weak adsorption sites,regulating CO2 adsorption through structural change or steric *** addition,ultraviolet(UV)light is commonly involved in the regulation of adsorption *** we report for the first time the smart adsorbents for CO2 capture,which makes strong adsorption sites respond to visible(Vis)*** adsorbents were fabricated by introducing primary amine and Dispersed Red 1(DR1,a kind of push-pull azobenzene that responds to Vis light rapidly)units to mesoporous silica,which act as strong adsorption sites and triggers,*** primary amine sites make the adsorbents highly selective in the adsorption of CO2 over *** light irradiation,azobenzene is in the form of trans configuration,which leads to decreased electrostatic potential of primary amines and subsequently,exposure of active sites and liberal adsorption of *** Vis-light irradiation,cis isomers are formed,which results in increased electrostatic potential of primary amines and subsequently shelter of active *** on such strong adsorption sites,the alteration of CO2 adsorption capacity can reach 40%for the adsorbent with and without Vis-light ***,the trans/cis isomerization of DR1 units can be triggered reversibly by Vis *** present smart system endows adsorbents with selective adsorption capacity and avoids the employment of UV light,which is unlikely to be achieved by conventional photoresponsive adsorbents.

摘要：用于海水脱盐的太阳能界面蒸发装置因其绿色环保、简单高效以及适用范围广等优点,受到了广泛关注。与传统的体积式蒸发装置不同,太阳能界面蒸发装置将太阳光的收集和蒸汽的产生锁定在空气-水的界面,无需从底部加热整体水来产生蒸汽,极大提高了能源利用效率。本文详细介绍了太阳能界面水蒸发装置的重要组成部分——光热材料的光热转换机理、材料种类以及材料的性能;探讨了高效海水净化太阳能蒸发装置的设计策略(增强光吸收、充足水供应、耐盐排盐等)。在此基础上,总结了基于界面蒸发中的太阳能蒸发装置的研究进展,展望了新型太阳能蒸发装置在海水净化领域的发展前景。

摘要：随着“新工科”建设的深入推进,培养高素质工程人才已成为高等工程教育的核心目标。然而,当前化工专业的工程实践教学面临着真实工厂安全风险高、缺乏现代化教学设施、教学内容与行业需求脱节等问题。为此,南京工业大学与企业合作,开发了基于SD工艺的环氧乙烷/乙二醇(EO/EG)半实物仿真装置。该装置模拟了完整的工艺链,提供了高度还原的生产环境和灵活的教学功能,通过DCS系统和仿真软件实现了对实际工艺的全面控制与教学支持。通过对该装置的设计、建设与应用的探讨,展示了其在提升工程实践教学质量、弥补传统教学不足、培养高素质化工人才方面的重要作用。

摘要：首先,文章针对抗鸟撞的研究活动,提出了抗鸟撞设计的计算模型,并分别对鸟体及结构的几何模型及材料参数设置进行了说明,提供了相应的计算公式;接下来,又针对有限元模型的建立,提供了适合研究鸟撞的SPH方法,同时阐述了网格划分及边界条件处理;最后,则在模拟结果的基础上展开了讨论,分析了撞击过程中各个结构所起到的作用。

摘要：针对最新开发的带有新型絮凝装置的沉淀设备,在进水浊度及进水流量变化的条件下,考察其在连续运行下的净水效果。结果表明:当原水浊度低于50NTU时,最佳投药量在8~10mg/L,当原水浊度在50~100NTU时,最佳投药量在10~15mg/L,出水浊度均小于3NTU;设计流量下,设备排泥周期为9h;当进水流量分别为192m^3/d、240m^3/d、288m^3/d时,出水平均浊度分别为2.17NTU、2.07NTU、2.76NTU,出水平均UV_(254)为0.037cm^(-1)、0.037cm^(-1)、0.039cm^(-1),出水平均CODMn为1.47mg/L、1.54mg/L、1.54mg/L,表明设备抗冲击负荷能力强,处理效果好,运行稳定。

摘要：纤维素的酶解过程是纤维素制备酒精工艺的一个重要过程,纤维素酶解的成本是整个纤维素酒精制造成本的重要组成部分之一,研究并改进纤维素酶解过程的工艺及设备是一个值得研究的课题。笔者拟开发一种连续式酶解混合反应器用于纤维素制备酒精的酶解过程,使纤维素的酶解过程实现连续化操作。与现有酶解生物反应器相比,以期能以较低的纤维素酶解生产成本达到更高的酶解转化率以及在产能上能得到显著提高。研究设计了几种反应器管内搅拌轴的形式,用Polyflow模拟得到一些数据并对其做初步分析。

摘要：为改善电子听诊器的用户体验,将LED灯指示电路应用于电子听诊器。分析了长亮指示、呼吸灯指示和闪烁灯指示方式的优缺点,结合网络医院专用的电子听诊器,基于低功耗、低成本的模拟电路设计了一款心跳闪烁指示电路。测试结果表明:该电路的指示灯可随心跳闪烁,有效实现心跳指示功能。