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Feasibility analysis of SO_2 absorption using a hydrophilic ceramic membrane contactor

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Chinese Journal of Chemical Engineering 2018年第10期26卷 2139-2147页

作者： Xingyin Gao Minghui Qiu Kaiyun Fu Peng Xu Xiangli Kong Xianfu Chen yiqun fan State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University

Hydrophilic ceramic membranes would be potential candidates for membrane gas absorption if they could be applied to appropriate separation *** study highlights a novel concept for the practical implementation of SO_2 absorption in hydrophilic ceramic membrane that exhibits outstanding thermal and mechanical *** this aim,we investigated experimentally the performance of SO_2 absorption into aqueous sodium hydroxide (NaOH) solution in a hydrophilic alumina (Al_2O_3) membrane contactor in terms of SO_2 removal efficiency and SO_2 mass transfer flux,and compared the performance with that in a hydrophobic one.A series of experiments were performed at various conditions over a NaOH concentration range of 0–1.0 mol·L^(-1),a liquid flow rate range of 30–180 ml·min^(-1),a gas flow rate range of 120–1000 ml·min^(-1),an inlet SO_2 concentration range of 400–2000μl·L^(-1),and a temperature range of 10–35°*** was found that the hydrophilic membrane was more competitive when using a NaOH concentration higher than 0.2 mol·L^(-1).Furthermore,it can be inferred that the hydrophilicα-Al_2O_3 membrane exhibited exceptional long-term stability under 480 h continuous operation.

关键词： Absorption Membrane contactor Ceramic membrane Hydrophilic Desulfurization

Zwitterionic monolayer grafted ceramic membrane with an antifouling performance for the efficient oil-water separation

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Chinese Journal of Chemical Engineering 2022年第2期35卷 227-235页

作者： Tianyu Zhang Qian Wang Wei Luan Xue Li Xianfu Chen Dong Ding Zhichao Shen Minghui Qiu Zhaoliang Cui yiqun fan State Key Laboratory of Materials-Oriented Chemical Engineering National Engineering Research Center for Special Separation MembranesCollege of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Zhangjiagang Institute of Nanjing Tech University Suzhou 215699China

Enormous demands on the separation of oil/water(O/W)emulsions in various industries,such as petrochemical,food and pharmaceutical industries,are looking for high performance and energy-efficient separation *** membranes have been used to deal with O/W emulsions,for its outstanding characteristics of easy-operation,high-flux,and long-term ***,membrane fouling is still a challenge in the industrial application of ceramic ***,antifouling ceramic membranes were fabricated by grafting zwitterions on the membrane surface via an environment-friendly two-step grafting method,which improves the antifouling property and *** grafting of such zwitterion on the ceramic surface was assessed by the combination of FTIR and XPS *** importantly,the hydration can be formed by electrostatic interactions layer on the modified membrane,which was confirmed by TGA *** antifouling performance of prepared zwitterionic ceramic membranes in the separation of O/W emulsions was systematically *** results suggested that zwitterion can significantly improve the flux of ceramic ultrafiltration membrane,and can also improve antifouling property dramatically by reducing the irreversible fouling in the separation of O/W ***,zwitterionic ceramic membranes hold promising potentials as an antifouling,highly efficient and green method in the practical purification of the O/W emulsions.

关键词： Ceramic membrane Zwitterionic Anti-fouling Hydration layer Oil/water emulsion

Mesoporous Si-MCM-48 membrane prepared by pore-filling method

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Science China(Technological Sciences) 2010年第4期53卷 1064-1068页

作者： XU DeKan & fan yiqun State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemistry and Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China 1. State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 China

Mesoporous MCM-48 membranes were prepared on asymmetric zirconia tubular support with an average pore size of 0.2 μm by hydrothermal *** support should be pretreated with H2O as a pore-filling substance to prevent the sol solution from infiltrating into the support *** SEM showed that the MCM-48 membrane was composed of tightly-connected spherical *** single gas N2 and H2 permeation experiments confirm that crack-free membrane could be prepared by pore-filling method.N2 permeance of MCM-48 membrane,synthesized by secondary growth,can reach 5.66×10-7 mol/Pa·s·m2,and the H2/N2 separation factor was 3.47 under trans-membrane pressure of 0.05 MPa.

关键词： MCM-48 mesoporous membrane pore-filling

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陶瓷纳滤膜制备与应用研究进展

化工进展 2016年第6期35卷 1786-1793页

作者：范益群漆虹南京工业大学化工学院材料化学工程国家重点实验室江苏南京210009

陶瓷纳滤膜以其优良的热稳定性、化学稳定性和机械强度等特性,在涉及高温、酸碱、有机溶剂等苛刻环境的过程工业领域具有广阔的应用前景。因此,陶瓷纳滤膜材料的制备研究已引起众多科研工作者的关注。本文综述了陶瓷纳滤膜在制备及应用... 详细信息

陶瓷纳滤膜以其优良的热稳定性、化学稳定性和机械强度等特性,在涉及高温、酸碱、有机溶剂等苛刻环境的过程工业领域具有广阔的应用前景。因此,陶瓷纳滤膜材料的制备研究已引起众多科研工作者的关注。本文综述了陶瓷纳滤膜在制备及应用方面的研究进展,着重介绍了溶胶-凝胶法、化学气相沉积法、原子层沉积法及表面接枝等陶瓷纳滤膜制备方法。溶胶-凝胶法反应温度低、操作过程相对简单且精确可控,是目前国内外陶瓷纳滤膜制备的常用方法;化学气相沉积法及原子层沉积法则需借助气相化学反应在多孔基底表面进行材料沉积,从而修复缺陷,减小平均孔经;表面接枝技术可改变陶瓷膜表面亲疏水性,同时将陶瓷基膜孔径减小至纳滤范围。此外简单介绍了陶瓷纳滤膜的应用,并对未来陶瓷纳滤膜研究方向提出了建议,指出陶瓷纳滤膜微结构参数与分离性能之间的关系建立,以及探讨陶瓷纳滤膜在溶剂体系中的分离机理将成为今后一段时间内的研究热点。

关键词：陶瓷纳滤膜耐溶剂耐化学性制备方法溶胶-凝胶法

Preparation and Characterization of Alumina Membranes on Capillary Supports： Effect of Film-coating on Crack-free Membrane Preparation

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Chinese Journal of Chemical Engineering 2010年第3期18卷 377-383页

作者：朱瑾范益群徐南平 State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 China

Ceramic capillary membrane has received much attention due to its relatively high pack density and favorable mechanical ***,it is difficult to prepare capillary membrane on its thin support by a dip-coating *** this study,alumina microfiltration membranes were prepared on the inner surface of alumina capillary support(outer diameter 4 mm,inner diameter 2.5 mm)by a dip-coating *** electron microscopy(SEM)observation,gas bubble pressure(GBP)method and membrane permeation test were carried out to evaluate membrane *** major effects in preparation of crack-free membrane,capillary filtration and film-coating,upon the thin support were *** as-prepared crack-free membrane presents a narrow pore size distribution,a mean pore size of about 0.6μm and a high pure water flux of 86000 L·m -2 ·h -1 ·*** is proved that the membrane thickness should be sufficiently large to overcome the defects of support surface,but it is only one of the prerequisites for the formation of crack-free ***,it is demonstrated that the capillary filtration effect is greatly restricted for thin capillary support with the dip-coating method and the film-coating effect plays a crucial role in the formation of crack-free membrane.

关键词： capillary film coating dip-coating ceramic membrane

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多孔陶瓷膜制备技术研究进展

化工学报 2013年第1期64卷 107-115页

作者：范益群漆虹徐南平南京工业大学膜科学技术研究所材料化学工程国家重点实验室江苏南京210009

多孔陶瓷膜具有化学稳定性好、机械强度大、耐酸碱、耐高温等优点,在石油和化学工业等苛刻环境中有着广泛的应用,多孔陶瓷膜的制备技术是推动多孔陶瓷膜产业发展的核心部分。多孔陶瓷膜制备技术的核心和关键是以提高陶瓷膜整体性能为导... 详细信息

多孔陶瓷膜具有化学稳定性好、机械强度大、耐酸碱、耐高温等优点,在石油和化学工业等苛刻环境中有着广泛的应用,多孔陶瓷膜的制备技术是推动多孔陶瓷膜产业发展的核心部分。多孔陶瓷膜制备技术的核心和关键是以提高陶瓷膜整体性能为导向,通过对陶瓷膜微结构的调控,实现陶瓷膜制备技术的突破。针对近十年来陶瓷膜领域的研究,概述了当前陶瓷膜领域在制备具有高渗透性、高渗透选择性的陶瓷膜以及陶瓷膜低成本化方面的研究进展,并对未来陶瓷膜领域的发展趋势及瓶颈性问题进行了讨论。

关键词：综述陶瓷膜制备技术微结构

保温时间对低温烧成管式多孔陶瓷膜支撑体性能的影响

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硅酸盐学报 2011年第3期39卷 507-511页

作者：漆虹邢卫红范益群南京工业大学膜科学技术研究所材料化学工程国家重点实验室南京210009

采用平均粒径为30μm的α-Al2O3和TiO2为原料,通过塑性挤出法制备出管式多孔支撑体。考察了支撑体在1 400℃保温不同时间烧成后的线性收缩、体积密度、孔结构、渗透性能和弯曲强度,并研究了支撑体的形成机理。结果表明:支撑体在1 400℃... 详细信息

采用平均粒径为30μm的α-Al2O3和TiO2为原料,通过塑性挤出法制备出管式多孔支撑体。考察了支撑体在1 400℃保温不同时间烧成后的线性收缩、体积密度、孔结构、渗透性能和弯曲强度,并研究了支撑体的形成机理。结果表明:支撑体在1 400℃烧成时,Al2O3和TiO2反应生成Al2TiO5,该反应的进行程度对支撑体渗透性能和力学性能有决定性影响。在1 400℃保温2 h烧成后,支撑体具有较高的机械强度(32.7 MPa)、较高的渗透通量[在0.1 MPa压力下为45 m3/(m2.h)]和较大的平均孔径(6.8μm),且该支撑体经90℃,1%(质量分数)NaOH溶液腐蚀720 h后机械强度基本不变,适宜作为陶瓷微滤膜的载体。

关键词：陶瓷膜多孔支撑体 α-氧化铝氧化钛钛酸铝

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地下集装箱物流系统在港城融合发展中的应用

地下空间与工程学报 2018年第S1期14卷 49-54页

作者：范益群游克思上海市政工程设计研究总院(集团)有限公司，上海20092

传统港口集疏运方式——集卡车货运交通极大地影响了城市道路的服务水平和通行能力,给港口城市交通及环境造成了不利的影响。为解决港城矛盾,促进港城融合协调发展,提出了一种可持续发展的集疏运新模式——基于地下集装箱物流系统的集... 详细信息

传统港口集疏运方式——集卡车货运交通极大地影响了城市道路的服务水平和通行能力,给港口城市交通及环境造成了不利的影响。为解决港城矛盾,促进港城融合协调发展,提出了一种可持续发展的集疏运新模式——基于地下集装箱物流系统的集疏运模式,并以上海港为例,提出地下集装箱物流系统的布局方案,从交通、经济及社会效益三方面进行分析评价。研究结果表明,以集卡车为主的传统集疏运方式已经不能满足港口集疏运货运交通的需求,地下集装箱物流系统对保障货物高效运输、减少交通拥堵和保护环境具有重要作用,能够有效解决港城之间矛盾,综合效益优势明显。

关键词：地下集装箱物流系统港城矛盾规划方案效益分析

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多孔PZT压电陶瓷膜的制备及其抗污染性能

化工学报 2017年第3期68卷 1224-1230页

作者：毛恒洋邱鸣慧范益群南京工业大学化工学院材料化学工程国家重点实验室国家特种分离膜工程技术研究所南京210009

以PbZr_xTi_(1-x)O_3(PZT)压电陶瓷粉体为原料,通过干压成型的方法制备多孔PZT陶瓷膜,考察了煅烧温度对多孔PZT陶瓷膜的机械强度、孔隙率以及纯水渗透性能的影响。当煅烧温度为950℃时,可制备出纯水渗透率为850 L·m^(-2)·h^(-1)·MPa^... 详细信息

以PbZr_xTi_(1-x)O_3(PZT)压电陶瓷粉体为原料,通过干压成型的方法制备多孔PZT陶瓷膜,考察了煅烧温度对多孔PZT陶瓷膜的机械强度、孔隙率以及纯水渗透性能的影响。当煅烧温度为950℃时,可制备出纯水渗透率为850 L·m^(-2)·h^(-1)·MPa^(-1),孔径为300 nm,机械强度为47.8 MPa,孔隙率为34%的多孔PZT陶瓷膜。在此基础上,考察了极化温度与极化电压对多孔PZT陶瓷膜压电性能的影响,并对极化后的PZT压电陶瓷膜进行萃取和表面等离子刻蚀处理。结果表明:极化温度为120℃、极化电压强度为4 k V·mm^(-1),极化后经热乙醇萃取及表面等离子刻蚀4 min后,多孔PZT压电陶瓷膜在外加交流电为20 V时,产生的共振振幅信号值达34.8 m V。将制备的多孔PZT压电陶瓷膜在粒径为600 nm的含油乳化液中进行过滤实验,发现陶瓷膜两端未加交流电时,其通量在2 h内衰减至4%。而加交流电后,其稳定通量可维持在20%左右,表明制备的多孔PZT压电陶瓷膜具有良好的抗污染效果。

关键词：多孔陶瓷膜压电陶瓷极化原位振动