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Journal of Ocean University of China 2024年第2期23卷 467-476页

作者： SUN Wenting HU Yangdong ZHENG Jiahuan SUN Qichao Chen Xia DING Jiakun ZHANG Weitao wu lianying College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665China

Studying the relationship between ionic interactions and salt solubility in seawater has implications for seawater desalination and mineral *** this paper,a new method of expressing ion-to-ion interaction is proposed by using molecular dynamics simulation,and the relationship between ion-to-ion interaction and salt solubility in a simulated seawater water-salt system is *** analyzing the variation of distance and contact time between ions in an electrolyte solution,from both spatial and temporal perspectives,new parameters were proposed to describe the interaction between ions:interaction distance(ID),and interaction time ratio(ITR).The best correlation between characteristic time ratio and solubility was found for a molar ratio of salt-to-water of 10:100 with a correlation coefficient of *** the same salt,a positive correlation was found between CTR and the molar ratio of salt and *** type 1-1,type 2-1,type 1-2,and type 2-2 salts,the correlation coefficients between CTR and solubility were 0.93,0.96,0.92,and 0.98 for a salt-to-water molar ratio of 10:100,*** solubility of multiple salts was predicted by simulations and compared with experimental values,yielding an average relative deviation of 12.4%.The new ion-interaction parameters offer significant advantages in describing strongly correlated and strongly hydrated electrolyte solutions.

关键词： molecular dynamics simulation interaction distance interaction time rate electrolyte aqueous solutions solubility

基于柔性设计的光热电站-海水淡化集成系统优化

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清华大学学报（自然科学版） 2024年第3期64卷 528-537页

作者：孙启超孙志伟伍联营周鑫中国海洋大学化学化工学院青岛266100

全可再生能源与海水淡化集成联产系统可有效解决淡水资源和能源短缺问题。如何设计柔性能力较强的光热电站-海水淡化集成系统以满足复杂天气状况下的用户能量需求是该领域亟待解决的重要课题。该文提出了光热电站与海水淡化集成的水热... 详细信息

全可再生能源与海水淡化集成联产系统可有效解决淡水资源和能源短缺问题。如何设计柔性能力较强的光热电站-海水淡化集成系统以满足复杂天气状况下的用户能量需求是该领域亟待解决的重要课题。该文提出了光热电站与海水淡化集成的水热电联产系统,建立了以集成系统年总费用最小为目标函数的数学模型,该模型为混合整数非线性问题。提出了适用于水热电联产系统优化的柔性指数及柔性设计方法,实现了对柔性指数的定义、计算及边界约束的优化;开发了柔性设计双层算法,外层算法获得系统规模,内层算法优化系统柔性能力。案例研究结果表明:柔性设计结果相较于固定工况设计结果,年总费用下降了10.7%,系统冗余大幅减少;与传统火热供电相比,每年节约用煤166 617 t,减少排放二氧化碳约436 538 t;水、热、电供需比波动得到显著抑制,电能、热能、淡水供需异常比例分别由91.11%、 98.19%、 60.69%下降到0%。案例研究结果表明所提出的系统模型及算法是可行的、有效的。该文基于柔性设计的联产系统对于海水淡化由高耗能产业转换为零排放产业,以及可再生能源向高耗能产业渗透具有指导意义。

关键词：光热电站海水淡化水热电联产柔性设计

A new model in correlating and calculating the solid–liquid equilibrium of salt–water systems

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Chinese Journal of Chemical Engineering 2016年第8期24卷 1056-1064页

作者： Xianzhen Xu Yangdong Hu lianying wu Xia Chen College of Chemistry and Chemical Engineering Ocean University of China

In this work, a new activity coefficient model was deduced for the correlation of solid–liquid equilibrium(SLE) in electrolyte solutions. The new excess Gibbs energy equation for SLE contains two parts: the single electrolyte item and the mixed electrolyte item. Then a new hypothesis for the reference state of activity coefficients was proposed in the work. Literature data for single electrolyte solution and mixed electrolyte solution systems,with temperature spanning from 273.15 to 373.15 K, were successfully correlated using the developed model.

关键词： Thermodynamic Electrolyte solution Activity coefficient model SLE Modeling

Testing and validation of a self-diffusion coefficient model based on molecular dynamics simulations

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Chinese Journal of Chemical Engineering 2021年第8期34卷 138-145页

作者： Xia Chen Yan Wang lianying wu Weitao Zhang Yangdong Hu College of Chemistry and Chemical Engineering Ocean University of ChinaQingdao 266100China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

In our previous work,we endowed a new physical meaning of self-diffusion coefficient in Fick’s law,which proposed that the diffusion coefficient can be described as the product of the characteristic length and the diffusion *** testify this simple theory,in this work,we further investigated the underlying mechanism of the characteristic length and the diffusion velocity at the molecular *** a complete dynamic run,the statistical average diffusion velocity and the characteristic length of molecules can be obtained by scripts,and subsequently the diffusion coefficient was determined by our proposed *** diffusion processes in 35 systems with a wide range of pressure and concentration variations were simulated using this *** the simulated results,diffusion coefficients from our new model matched well with the experimental results from *** total average relative deviation of predicted values with respect to the experimental results is 8.18%,indicating that the novel model is objective and *** with the traditional MSD-t model,this novel diffusion coefficient model provides more reliable results,and the theory is simple and straightforward in ***,the effect of gas pressure and liquid concentration on the diffusion behavior were discussed,and the microscopic diffusion mechanism was elucidated through the distribution of diffusion velocity and the characteristic length ***,we suggested new distribution functions,providing more reliable data theoretical foundations for the future research about the diffusion coefficient.

关键词： Diffusion Molecular simulation Parameter identification Characteristic length Diffusion velocity

Experimental measurement and thermodynamic modeling of binary and ternary solid–liquid phase equilibrium for the systems formed by L-arabinose,D-xylose and water

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Chinese Journal of Chemical Engineering 2017年第10期25卷 1467-1472页

作者： Lei Guo lianying wu Weitao Zhang Chen Liang Yangdong Hu College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China

Solid–liquid phase equilibrium data for binary(L-arabinose–water) and(D-xylose–water) systems at temperatures from(269.85–298.05) K and ternary(L-arabinose–D-xylose–water) system at temperatures of 273.85 K,278.85 K and 284.45 K were measured at atmospheric *** ternary phase diagrams of the systems were constructed on the base of the measured *** pure solid phases were formed at given temperatures,including pure L-arabinose and pure D-xylose,which were con firmed and determined by the method of Schreinemakers' wet *** the same temperature,the crystallization region of L-arabinose was larger than D-xylose'*** acquired solubility data were then correlated using the NRTL model,Wilson model and Xu *** calculated solubility with the three models agreed well with the experimental values.

关键词：热力学模型 D-木糖实验测量 L-系统三元相图液相平衡固体 L-阿拉伯糖

The green hydrolysis technology of hemicellulose in corncob by the repeated use of hydrolysate

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Chinese Journal of Chemical Engineering 2018年第1期26卷 191-195页

作者： Lei Guo Yangdong Hu lianying wu Chen Liang Weitao Zhang College of Chemistry and Chemical Engineering Ocean University of China

To achieve green hydrolysis technology of hemicellulose through repeated using hydrolysate,the hydrolysis of hemicellulose in corncob was *** influence of repeated use of corncob hydrolysate on concentrations of D-xylose and L-arabinose was *** loss rates of D-xylose in the prepared D-xylose solutions both with and without corncob,and repeated using corncob hydrolysate under identical acidity condition were *** result shows that D-xylose concentration and L-arabinose concentration are all gradually increasing with the growing time of repeated use of corncob *** the fifth repetition,the concentrations of D-xylose and L-arabinose are 196.7 g·L^(-1)and 22.0 g·L^(-1),*** inhibiting the degradation of D-xylose is generated during repeated use of corncob hydrolysate,and the production is further proved by the change of D-xylose concentration and the loss rate of D-xylose over heating time.

关键词：重复使用水解作用穗轴玉米技术加热时间损失率木糖

可再生能源在化工生产及其公用工程系统中的应用

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化工进展 2022年第10期41卷 5297-5305页

作者：孙志伟伍联营胡仰栋张伟涛中国海洋大学化学化工学院山东青岛266000

“双碳目标”对化工生产提出了新的挑战,改善能源供给结构和提升能源利用效率是解决这一问题的重要途径之一。随着能源转换技术和储能技术不断发展和完善,可再生能源利用水平及供应稳定性进一步提高,在替代以化石能源为主的化工公用工... 详细信息

“双碳目标”对化工生产提出了新的挑战,改善能源供给结构和提升能源利用效率是解决这一问题的重要途径之一。随着能源转换技术和储能技术不断发展和完善,可再生能源利用水平及供应稳定性进一步提高,在替代以化石能源为主的化工公用工程系统方面有着明显的优势,被认为是最具应用前景的新一代化工系统供能方式。本文在可再生能源供能技术的基础上,总结了可再生能源在供热、制冷、供水、供电以及多联产系统等新型化工公用工程中的应用现状,着重突出了可再生能源相比传统化工公用工程在节能减排方面发挥的重要作用。探讨了可再生能源目前在化工公用工程系统中的耦合匹配现状、应用所遇到的问题和挑战,并对其未来发展进行了展望。文章指出,可再生能源化工公用工程将成为解决目前化工环保困境的重要途径。

关键词：再生能源化工公用工程过程系统优化设计节能减排

A Genetic Algorithm-based Approach to Scheduling of Batch Production with Maximum Profit

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Chinese Journal of Chemical Engineering 2005年第1期13卷 68-73页

作者：伍联营胡仰栋徐冬梅华贲 College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266003 China School of Chemical Engineering South China University of Technology Guangzhou 510640 China

The optimal scheduling of multi-product batch process is studied and a new mathematics model targeting the maximum profit is proposed, which can be solved by the modified genetic algorithm (MGA) with mixed coding (sequence coding and decimal coding) developed by us. In which, the partially matched cross over (PMX) and reverse mutation are used for the sequence coding, whereas the arithmetic crossover and heteropic mutation are used for the decimal coding. In axidition, the relationship between production scale and production cost is analyzed and the maximum profit is always a trade-off of the production scale and production cost. Two examples are solved to demonstrate the effectiveness of the method.

关键词：遗传算法化学工业生产计划成本控制计算方法

Simulation of Countercurrent Multi-Effect Drying System

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Advances in Materials Physics and Chemistry 2012年第4期2卷 206-211页

作者： Hong Li lianying wu Xianli wu Yangdong Hu Department of Chemical Engineering Ocean University of China Qingdao 266000 China

The paper bulids a countercurrent multi-effect drying process model which can be expressed as a linear programming(LP) problem with the minimum total energy consumption as target function. Based on the model it can be conventient to solve the heat load , degree of drying and other drying parameters of each effect. And it realizes the mathematical simulation an analysis of multi-effect drying process. Such process not only reuses the secondary steam but also utilizes the high energy grade. Drying silica sand using 1-effect drying to 5-effect drying is presented as an example. The energy consumption and energy saving rate are compared by using co-current multi-effect drying and countercurrent multi-effect drying. As a summary, the countercurrent multi-effect drying is better than co-current drying. Considered the equipment investment and energy conservation, the study also concluded that the countercurrent 4-effect drying is the optimum selection, and it can save 57.6% energy compared to countercurrent 1-effect drying.

关键词： Countercurrent Drying Multi-Effect Drying Secondary Steam LP

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基于激光辅助隧道拱顶下沉监测的研究

江西建材 2022年第12期 174-176页

作者：吴联迎福建省建筑科学研究院有限责任公司福建福州350108 福建省绿色建筑技术重点实验室福建福州350108

当隧道面壁发育断层破碎带等不良地质体时,容易导致块体失稳甚至大范围塌方,通过监测隧道的拱顶下沉可以判断围岩的稳定状况。为了提高隧道拱顶下沉监测效率,改善监测数据信息的实效性,文中提出了一种运用激光辅助监测拱顶下沉的非接触... 详细信息

当隧道面壁发育断层破碎带等不良地质体时,容易导致块体失稳甚至大范围塌方,通过监测隧道的拱顶下沉可以判断围岩的稳定状况。为了提高隧道拱顶下沉监测效率,改善监测数据信息的实效性,文中提出了一种运用激光辅助监测拱顶下沉的非接触量测方法,通过室内试验评测其量测精度可达±0.5mm,并依托长乐某隧道三种典型地质工况的监测数据,对比分析了全站仪与激光辅助两种监测方法的优劣,研究表明,激光辅助量测法较全站仪监测结果更加稳定,无明显波动,且监测实效性和效率都有明显提升。

关键词：隧道监测激光辅助量测拱顶下沉