碳酸乙烯酯合成过程的反应吸收多场协同分析及数值模拟

蒋雪冬; 邱鹏; 张海亮; 杨伯伦

您当前的位置：

首页 >

文章列表页 >

碳酸乙烯酯合成过程的反应吸收多场协同分析及数值模拟

更新时间：2025-07-09

- 碳酸乙烯酯合成过程的反应吸收多场协同分析及数值模拟
- Multi-Field Synergy Analysis of Reaction-Absorption Coupling Process and Numerical Simulation for Ethylene Carbonate Synthesis
- 西安交通大学学报 2012年46卷第12期页码：92-97
- 作者机构：
  
  西安交通大学化学工程与技术学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2012-05-04. 作者简介:蒋雪冬(1986-),男,博士生;杨伯伦(通信作者),男,教授,博士生导师. 基金项目:国家“973计划”资助项目(2009CB219906);国家自然科学基金资助项目(20976144);教育部高等学校博士学科点专项科研基金资助项目(20110201130002)
- DOI：
  中图分类号： TQ021.8
- 网络首发：2012-12-10，
  
  纸质出版：2012
- 稿件说明：
移动端阅览
蒋雪冬, 邱鹏, 张海亮, 等. 碳酸乙烯酯合成过程的反应吸收多场协同分析及数值模拟[J]. 西安交通大学学报, 2012,46(12):92-97.

Multi-Field Synergy Analysis of Reaction-Absorption Coupling Process and Numerical Simulation for Ethylene Carbonate Synthesis[J]. 2012, 46(12): 92-97.
蒋雪冬, 邱鹏, 张海亮, 等. 碳酸乙烯酯合成过程的反应吸收多场协同分析及数值模拟[J]. 西安交通大学学报, 2012,46(12):92-97. DOI：

Multi-Field Synergy Analysis of Reaction-Absorption Coupling Process and Numerical Simulation for Ethylene Carbonate Synthesis[J]. 2012, 46(12): 92-97. DOI：

摘要

为提高尿素醇解法合成碳酸乙烯酯的收率

通过在酯化反应进行的同时吸收副产物氨气来实现全过程的强化.首先针对磷酸溶液中NH

鼓泡吸收的具体过程进行了多场协同分析

获得了反应吸收耦合过程强化的理论依据; 进而运用流体体积函数多相流模型对单个NH

气泡的化学吸收过程进行了数值模拟.结果表明:受气膜传质控制的NH

化学吸收

实质上是气流速度场和压力梯度场共同作用的结果

传质效率直接受两场协同度的影响

该协同数不仅取决于两场标量值的大小

也取决于它们的矢量夹角

当夹角为0°时

场协同数最大

相应地对流传质系数就越大.在鼓泡吸收过程中

气液两相的流动促使NH

气泡内部气流形成由中心向四周发散的微小涡流

气流流场向着与相界面附近的压力梯度场达到最优协同度的方向发展

最大化了场协同数

有利于强化传质.

Abstract

To improve the productivity of ethylene carbonate from the esterification of urea and ethylene glycol

the synthesis process is enhanced by removing by-product ammonia via bubbling in phosphoric acid solution. Multi-field synergy principle is employed to analyze the chemical absorption process

then numerical simulation is carried out for absorption of single ammonia bubble with the volume of fluid model. The results show that the chemical absorption of ammonia

which controlled by convective mass transfer

is essentially affected by the synergy of velocity and pressure gradient fields. The synergy is measured with mass transfer field synergy number

which is determined by scalar quantities of the two vector fields

and mostly

by their included angle. While the angle gets zero

the field synergy number reaches to the maximum

which leads to a larger mass transfer coefficient. During the bubbling absorption process

ammonia current inside the bubble facilitates forming tiny vortexes to give rise to the optimized ammonia velocity field and to optimize the synergy with pressure gradient field at gas-liquid interface

thus the field synergy number is maximized and the mass transfer efficiency of ammonia is consequently heightened.

关键词

Keywords

references

沈玉龙,魏利滨,曹文华,等.绿色化学[M].北京:中国环境科学出版社,2009:1-7.

张瑾.尿素合成碳酸乙烯酯工艺的研究[D].天津:天津大学,2008.

LI Qibiao, ZHANG Wenyu, ZHAO Ning, et al. Synthesis of cyclic carbonates from urea and diols over metal oxides[J]. Catalysis Today, 2006, 115(1/2/3/4): 111-116.

QIU Peng, WANG Lu, JIANG Xuedong, et al. Synthesis of diethyl carbonate by combined process of transesterification with distillation[J]. Energy Fuels, 2012, 26(2): 1254-1258.

QIU Peng, YANG Bolun, YI Chunhai, et al. Characterization of KF/γ-Al2O3 catalyst for the synthesis of diethyl carbonate by transesterification of ethylene carbonate[J]. Catalysis Letters, 2010, 137(3/4): 232-238

过增元.对流换热的物理机制及其控制: 速度场与热流场的协同[J].科学通报,2000,45(19):2118-2122.

GUO Zengyuan. Physical mechanism of convective heat transfer and its control: the synergy of velocity field and heat flow field[J]. Science Bulletin, 2000, 45(19): 2118-2122.

吴良柏,李震,宋耀祖.热质传递过程的场协同原理[J].科学通报,2009,54(14):2045-2050.

WU Liangbai, LI Zheng, SONG Yaozu. The field synergy principle of heat and mass transfer process[J]. Science Bulletin, 2009, 54(14): 2045-2050.

CHEN Qun, REN Jianxun, GUO Zengyuan. Field synergy analysis and optimization of decontamination ventilation designs[J]. International Journal of Heat and Mass Transfer, 2008, 51(3/4): 873-881.

CHEN Qun, MENG Ji'an. Field synergy analysis and optimization of the convective mass transfer in photocatalytic oxidation reactors[J]. International Journal of Heat and Mass Transfer, 2008, 51(11/12): 2863-2870.

YU Y S, LI Y, LU H F, et al. Multi-field synergy study of CO2 capture process by chemical absorption[J]. Chemical Engineering Science, 2010, 65(10): 3279-3292.

WANG Huajun, YANG Bolun, WU Jiang, et al. Multi-fields synergy in the process of reactive distillation coupled with membrane separation[J]. Chemical Engineering and Processing, 2005, 44(11): 1207-1215.

BRENNEN C E. Fundamentals of multiphase flows [M].Cambridge, UK: Cambridge University Press, 2005: 246-282.

JULIEN D, STEPHANE V, ARNAUD E, et al. Numerical investigations in rayleigh breakup of round liquid jets with VOF methods[J]. Computers Fluids, 2011, 50(1): 10-23.

倪明玖.浮力作用下上升气泡的变形和驻涡形成机理研究[J].工程热物理学报,2009,30(1):76-80.

NI Mingjiu. Bubble rising driven by buoyancy with deformation and standing vortex[J]. Journal of Engineering Thermophysics, 2009, 30(1): 76-80.

张小斌,项世军,曹潇丽,等.用VOF方法数值计算液滴燃烧[J].化工学报,2011,62(3):692-698.

ZHANG Xiaobin, XIANG Shijun, CAO Xiaoli, et al. Numerical simulation for combustion of droplet with volume of fluid formulation[J]. CIESC Journal, 2011, 62(3): 692-698.

LI Yong, ZHANG Jianping, FAN Liangshi. Discrete-phase simulation of single bubble rise behavior at elevated pressures in a bubble column[J]. Chemical Engineering Science, 2000, 55(20): 4597-4609.

LI Y, YANG G Q, ZHANG J P, et al. Numerical studies of bubble dynamics in gas-liquid-solid fluidization at high pressures[J]. Power Technology, 2001, 116(2): 246-260.

YANG G Q, DU Bing, FAN L S. Bubble formation and dynamics in gas-liquid-solid fluidization: a review[J]. Chemical Engineering Science, 2007, 62(1): 2-27.

过增元,黄素逸.场协同原理与强化传热新技术[M].北京:中国电力出版社,2004:6-15.

BERND R, GERD M. Solubility of ammonia in aqueous solutions of phosphoric acid: model development and application[J]. Journal of Solution Chemistry, 1994, 23(1): 37-51.

樊鹏飞, 张兄文, 李国君, 等.板式固体氧化物燃料电池的热应力分析. 2012,46(7):75-81.

潘华,宋华丰.Mn改性Fe/H-beta催化剂的低温催化分解NOx的研究. 2012,46(1):131-134.

王伟宗,荣命哲,Anthony B. MURPHY,等.平衡态电弧等离子体统计热力学属性的计算. 2011,45(4):86-92.

邓承继,周薇,祝洪喜,等. K2O对氧化物原料合成Al8B4C7的影响. 2011,45(3):112-116.

燕子鹏,蔡舒,武卫兵.电化学法制备p型Cu2O半导体薄膜及其性能的表征. 2011,45(3):121-124.

杨靖,陈杰瑢.金属银负载型SiO2杂化膜的制备与性能表征. 2010,44(12):87-92.

张英佳,黄佐华,王金华,等.利用激波管实验装置研究丙烯/氧气/氮气混合气着火滞燃期. 2010,44(1):9-12.

王保国,李翔.多工况下高超声速飞行器再入时流场的计算. 2010,44(1):71-76.

冉帆,王锡斌,朱瑞军,等.甲醇空气预混层流燃烧的简化化学反应动力学机理. 2009,43(9):27-31.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

液氢管路输运中静电积聚机理与电流密度分布特征研究

X射线辐照下聚酰亚胺材料空间电荷分布特性的数值模拟

异质裂隙内超临界CO2地热提取特性数值模拟研究

工质与叶轮传热对超临界二氧化碳向心透平气动性能与流动特性的作用机制

机翼近场尾流流动特性的附着涡模型分析