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Modelling and simulation of two-bed PSA process for separating H2 from methane steam reforming

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Chinese Journal of Chemical Engineering 2019年第8期27卷 1870-1878页

作者： Huiru Li Zuwei Liao Jingyuan Sun binbo jiang Jingdai Wang Yongrong Yang Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027 China State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027 China

Methane steam reforming is the main hydrogen production method in the industry. The product of methane steam reforming contains H2, CH4, CO and CO2 and is then purified by pressure swing adsorption(PSA) technology. In this study, a layered two-bed PSA process was designed theoretically to purify H2 from methane steam reforming off gas. The effects of adsorption pressure, adsorption time and purgeto-feed ratio(P/F ratio) on process performance were investigated to design a PSA process with more than99.95% purity and 80% recovery. Since the feed composition of the PSA process changes with the upstream process, the effect of the feed composition on the process performance was discussed as *** result showed that the increase of CH4 concentration, which was the weakest adsorbate, would have a negative impact on product purity.

关键词： Hydrogen Adsorption Purity Recovery Feed composition

Pore plugging effects on the performance of ZSM-5 catalyst in MTP reaction using a discrete model

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Chinese Journal of Chemical Engineering 2021年第4期34卷 253-263页

作者： Yudong Shen Hao Liang Zuwei Liao binbo jiang Jingdai Wang Yongrong Yang Minggang Li Yibin Luo Xingtian Shu Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China SINOPEC Research Institute of Petroleum Processing Beijing 100083China

Coke is an important medium for connecting reaction and regeneration of the methanol to propylene process on the ZSM5 *** grows in the meso and macro pores,it gradually worsens the diffusion inside the catalyst ***,pore plugging is inevitable which causes the deactivation of ZSM5 ***,current continuum model cannot reflect the changes in pore structure with clear physical concepts.A discrete model that is verified by the carbon deposition experiments is introduced to indicate the behavior of pore plugging *** show that the pore plugging has a significant effect on the performance of the *** time varying profile of effectiveness factor is obtained,indicating a regular reduction with the increase of the pore plugging *** distributions of pore size that would significantly enhance the plugging effect are also identified.

关键词： Discrete model Pore plugging effects MTP reaction Pore network

Modeling and Optimization of Ethane Steam Cracking Process in An Industrial Tubular Reactor with Improved Reaction Scheme

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China Petroleum Processing & Petrochemical Technology 2020年第4期22卷 117-125页

作者： Mohsin Ali Liao Zuwei Yao Yang Sun Jingyuan jiang binbo Wang Jingdai Yang Yongrong Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027 State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027

Ethane steam cracking process in an industrial reactor was *** one-demsional(1D)steady-state model was developed firstly by using an improved molecular reaction scheme and was then simulated in Aspen Plus.A comparison of model results with industrial data and previously reported results showed that the model can predict the process kinetics more *** addition,the validated model was used to study the effects of different process variables,including coil outlet temperature(COT),steam-to-ethane ratio and residence time on ethane conversion,ethylene selectivity,products yields,and coking ***,steady-state optimization was conducted to the operation of industrial *** COT and steam-to-ethane ratio were taken as decision variables to maximize the annual operational profit.

关键词： ethane steam cracking tubular reactor Aspen Plus molecular reaction scheme process simulation process optimization

RHO:A Software Tool for Targeting and Design of Refinery Hydrogen Networks

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China Petroleum Processing & Petrochemical Technology 2020年第2期22卷 79-85页

作者： Wang Wence Liao Zuwei Cui Jiutao Sun Jingyuan jiang binbo Wang Jingdai Yang Yongrong Feng Baolin Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027 State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 CNPC Northeast Refining&Chemical Engineering Co. LtdDalian 116085

Hydrogen management is important for refineries to improve their business *** approaches such as pinch analysis and mathematical programming have been employed in the management of hydrogen ***,it is not easy for site engineers to implement these techniques,due to the complicated *** this point,it is necessary to develop a software that can implement the proposed methodologies automatically,which is really the goal of this *** presented refinery hydrogen system optimization software(RHO)is a web based *** is developed in the Java Web environment,where the subroutines of mathematical model developed in GAMS software can be easily *** can generate graphics of both the hydrogen pinch diagram and the hydrogen distribution *** purifiers as well as the physical distances between units are considered in the optimization *** addition,there is a special module for the calculation of membrane separation,which is very important in the hydrogen *** functions and the interfaces of the software are illustrated via practical *** studies show the effectiveness of the RHO software.

关键词： refinery hydrogen management software mathematical programming pinch analysis

Effect of Hydrothermal Treatment on Suppressing Coking of ZSM-5 Zeolite during Methanol-to-Propylene Reaction

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China Petroleum Processing & Petrochemical Technology 2016年第2期18卷 7-13页

作者： jiang binbo Zhou Bingjie Yan Lixia Wei Lingze Xu Caixia Liao Zuwei Huang Zhengliang Wang Jingdai Yang Yongrong State Key Laboratory of Chemical Engineering Department of Chemical and Biochemical EngineeringZhejiang University

Fresh ZSM-5 zeolite catalysts were pretreated at 460 ℃and 500 ℃with various cumulative amount of water feed(CAWF) in a fixed bed reactor. The catalytic process was carried out under the following conditions: a temperature of 480 ℃; a methanol WHSV of 3 h-1; a methanol partial pressure of 30 k Pa; and a time on stream of 12 h, 24 h and 48 h, respectively. The BET parameters of catalysts and diffusion coefficients of toluene showed that there were two types of mesopores generated under different hydrothermal conditions. Mild temperature and moderate CAWF conditions led to external open mesopores which could be entered from the external surface of the zeolite, while a high temperature or a high CAWF condition resulted in the generation of macropores or internal isolated mesopores, which were occluded in the microporous matrix. The TGA results showed that catalyst with external open mesopores had good ability to resist coke accumulation and good performance on propylene selectivity, while the internal isolated mesopores did no contribute to the increased diffusivity of reactants and products.

关键词： methanol to propylene (MTP) hydrothermal treatment ZSM-5 coking mesopores diffusion

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聚碳酸酯/硫酸钡核壳复合粒子的制备

化学反应工程与工艺 2005年第3期21卷 285-288页

作者：蒋斌波浙江大学化工系浙江杭州310027

采用溶析结晶法制备亚微米聚碳酸酸(PC)-硫酸钡(BaSO_4)核壳复合粒子,PC 为连续相,BaSO_4为分散相。运用扫描电镜、能量散射仪、X 衍射仪、红外光谱、激光粒度分析仪等分析方法对粒子的粒径、粒度分布、形貌、结构和晶相进行表征。结果... 详细信息

采用溶析结晶法制备亚微米聚碳酸酸(PC)-硫酸钡(BaSO_4)核壳复合粒子,PC 为连续相,BaSO_4为分散相。运用扫描电镜、能量散射仪、X 衍射仪、红外光谱、激光粒度分析仪等分析方法对粒子的粒径、粒度分布、形貌、结构和晶相进行表征。结果表明溶析结晶法成功地使 PC 对 BaSO_4进行包覆,制备得到平均粒径300～650nm、粒度分布均匀、形貌均一的聚碳酸酯-硫酸钡核壳结构亚微米复合粒子。

关键词：核壳复合粒子溶析结晶法聚碳酸酯硫酸钡制备高分子材料

Surface Modification of Pyrolytic Carbon Black from Waste Tires and Its Use as Pigment for Offset Printing Ink

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Chinese Journal of Chemical Engineering 2006年第5期14卷 654-659页

作者：周洁王靖岱任晓红阳永荣蒋斌波 UNILAB Research Center for Chemical Reaction Engineering Department of Chemical Engineering Zhejiang University

Pyrolysis has the potential of transforming waste into valuable products. Pyrolytic carbon black (PCB) is one of the most important products resulting from the pyrolysis of used tires. One of the most significant applica-tions of modified pyrolytic carbon black is its use as pigment for offset printing ink to obtain high added values. Inverse gas chromatography (IGC) results show that a large quantity of inorganic matters and carbonaceous deposit are removed by treating the pyrolytic carbon black with nitric acid solution. Plenty of active sites originally occu-pied by inorganic ash and coke are recovered. The surface energy of pyrolytic carbon black (TWPC)modified by titanate-coupling agent-especially the specific interaction γ sspdetermined by the specific probe molecule, tolu-ene-shows the strong interaction between the TWPC and the synthetic resins. The offset printing ink performance confirms the IGC prediction. And TWPC has the great potential of applications in printing ink industry as pigment.

关键词：废轮胎热解炭黑表面修饰平版印刷油墨

Design Energy Efficient Water Utilization Systems Allowing Operation Split

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Chinese Journal of Chemical Engineering 2008年第1期16卷 16-20页

作者：廖祖维武锦涛蒋斌波王靖岱阳永荣 State Key Laboratory of Chemical Engineering Zhejiang University Hangzhou 310027 China Department of Chemical and Biochemical Engineering Zhejiang University Hangzhou 310027 China

这篇文章处理允许操作的有效的水利用系统切开了的精力的设计。象操作灵活性和基本投资那样的实际特征使潜水艇操作的数字成为了这个问题的一个重要参数。由独立对待直接、间接的传热，象操作一样的目标淡水和能量消耗切开了条件首先被... 详细信息

这篇文章处理允许操作的有效的水利用系统切开了的精力的设计。象操作灵活性和基本投资那样的实际特征使潜水艇操作的数字成为了这个问题的一个重要参数。由独立对待直接、间接的传热，象操作一样的目标淡水和能量消耗切开了条件首先被获得。随后，一个混合整数非线性的编程(MINLP ) 模型为水网络和热空气冷却换热器网络(母鸡) 的设计被建立。建议系统的途径被限制到单个沾染物。从文学的例子被用来说明途径的适用性。

关键词：操作分解热集成用水网络工程设计

飞秒激光参数对硅橡胶表面结构与防冰性能影响的研究

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精密成形工程 2024年第6期16卷 12-23页

作者：贺彬波蒋果杨灿华南理工大学机械与汽车工程学院广州510641 深圳技术大学中德智能制造学院广东深圳518118

目的采用飞秒激光刻蚀硅橡胶表面,获得表面结构较优、润湿性能与防冰性能优异的超疏水硅橡胶表面。方法通过控制变量,设计单因素试验,研究飞秒激光参数(填充间距、能量密度、扫描速度)对硅橡胶表面结构的影响规律。基于正交试验设计和... 详细信息

目的采用飞秒激光刻蚀硅橡胶表面,获得表面结构较优、润湿性能与防冰性能优异的超疏水硅橡胶表面。方法通过控制变量,设计单因素试验,研究飞秒激光参数(填充间距、能量密度、扫描速度)对硅橡胶表面结构的影响规律。基于正交试验设计和极差分析获得使表面结构规整且表面粗糙度最大的相对最优工艺参数,研究飞秒激光参数对表面粗糙度的影响主次顺序。结果飞秒激光刻蚀硅橡胶的相对最佳工艺参数如下:能量密度为5 J/cm^(2),扫描速度为200 mm/s,填充间距为20μm。最优参数组下激光刻蚀的超疏水硅橡胶表面粗糙度达到最大值5.954μm,具有规整的峰状凸起与微纳结构和优异的超疏水性能,水接触角高达165.3°,滚动角低至2.6°。该超疏水硅橡胶表面具有优异的防冰性能,在低温高湿环境下,与未处理的硅橡胶表面相比,结冰时间由67 s延长至312 s,冰黏附强度由39.6 kPa降低至7.4 kPa。超疏水硅橡胶还具有良好的循环除冰性能,经20次结冰/除冰循环后,冰黏附强度仍不超过20 kPa;此外,该表面还具有优异的耐腐蚀性能和良好的耐磨损性能。结论飞秒激光增大能量密度和减小扫描速度会使激光刻蚀宽度增大,要避免纵向条纹,应控制填充间距不超过激光刻蚀宽度。激光参数优化后刻蚀出的超疏水硅橡胶表面具备优异的防冰性能,并且机械与化学稳定性较好,在恶劣环境中的防冰领域,具有广阔的应用前景。

关键词：硅橡胶飞秒激光刻蚀纵向条纹激光参数优化超疏水表面防冰表面