Construction of a New Concept on Instabilities of Imperfectly-Mixed Reactors

不完全混合反应器不稳定性新概念的构建

• 批准号: 07455307
• 负责人: KATAOKA Kunio
• 金额: $ 4.29万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455307/
• 关键词: Reaction Instability; Coupling of Complex Systems; Nonlinear Phenomena; Chemical Oscillation; Imperfect Mixing; Taylor Vortex Flow; Bifurcation; 反応装置工学; 反応制御

This research dealt experimentally and theoretically with the effect of coupling of nonlinearities between chemical and fluid dynamic complex systems. A continuous Taylor vortex flow reactor (abbreviated TVFR) was utilized as a complex flow system imperfectly mixed. Belousov-Zhabotinskii reaction (abbreviated B-Z reaction) was adopted as a complex reaction system with autocatalytic elementary processes.(1) Flow Instabilities and Bifurcation of TVFR : THe instabilities of Taylor vortex flow depend on the hysteresis how to attain a steady state at low Reynolds numbers, whereas the dependency on the hysteresis becomes weak at high Reynolds numbers.(2) Instabilities and Bifurcation of B-Z reaction in TVFR : The continuous flow system as the test apparatus consists of a CSTR followed by a TVFR.The effluent from the CSTR was supplied as the feed into the TVFR by varying the flow rate. There appeared irregular disturbances when the inlet condition of the TVFR was singly-periodic, whereas no remarkable irregularity could be found when the inlet condition was in dynamical equilibrium. The spatio-temporal oscillation patterns were successfully described qualitatively by a numerical simulation based on "Coupled Map Lattice Method" using an Oregonator reaction model.

本文从实验和理论两方面研究了化学与流体动力学复杂系统之间的非线性耦合效应。采用连续泰勒涡流反应器（TVFR）作为不完全混合的复杂流动系统。Belousov-Zhabotinskii反应（简称B-Z反应）是一个具有自催化基元过程的复杂反应体系。(1)流动不稳定性和TVFR的分叉：泰勒涡流的不稳定性依赖于滞后如何在低雷诺数下达到稳定状态，而在高雷诺数下对滞后的依赖性变得很弱。(2)TVFR中B-Z反应的不稳定性和分叉：作为测试装置的连续流系统由CSTR和TVFR组成，CSTR的流出物通过改变流速作为进料供给TVFR。当进气条件为单周期时，出现了不规则的扰动，而当进气条件为动态平衡时，没有发现明显的不规则性。采用Oregonator反应模型，采用耦合映象格子法对该振荡模式进行了数值模拟，定性描述了该振荡模式的时空分布。

项目成果

K.Kataoka, N.Ohmura, M.Kouzu, Y.Simamura and M.Okubo: "Emulsion Polymerization of Stirene ina continuous Taylor Vortex Flow Reactor" Chem. Eng. Sci.Vol.50(9). 1409-1416 (1995)

K.Kataoka、N.Ohmura、M.Kouzu、Y.Simamura 和 M.Okubo：“苯乙烯在连续泰勒涡流反应器中的乳液聚合” Chem。

N.Ohmura,K.Kataoka: "Effect of Vortex Cell Structure on Bifurcation Properties in a Taylor Vortex Flow System" J.Chem.Eng.Japan. 28(6). 758-764 (1995)

N.Ohmura、K.Kataoka：“泰勒涡流系统中涡流单元结构对分叉特性的影响”J.Chem.Eng.Japan。

N. Ohmura, K. Kataoka: "Effect of Vortex Cell Structure on Bifurcation Properties in a Taylor Vortex Flow System" J. Chem. Eng. Japan. 28(6). 758-764 (1995)

N. Ohmura、K. Kataoka：“泰勒涡流系统中涡流单元结构对分叉特性的影响”J. Chem。

K.Kataoka,N.Ohmura: "Emulsion Polymerization of Styrene in a Continuous Taylor Vortex Flow Reactor" Chem.Eng.Sci.50(9). 1409-1416 (1995)

K.Kataoka,N.Ohmura：“苯乙烯在连续泰勒涡流反应器中的乳液聚合”Chem.Eng.Sci.50(9)。

K. Kataoka, N. Ohmura: "Emulsion Polymerization of Styrene in a Continuous Taylor Vortex Flow Reactor" Chem. Eng. Sci.50(9). 1409-1416 (1995)

K. Kataoka、N. Ohmura：“苯乙烯在连续泰勒涡流反应器中的乳液聚合” Chem。