Understanding and Prediction of the Dynamic Behavior of Distillation Columns

1970 ◽  
Vol 9 (3) ◽  
pp. 396-407 ◽  
Author(s):  
Edward F. Wahl ◽  
Peter Harriott
Keyword(s):  
Dynamic Behavior ◽  
Distillation Columns

Insights on the dynamic behavior of thermally coupled distillation columns implemented on processes with recycles

2015 ◽  
Vol 93 ◽  
pp. 120-135 ◽  
Author(s):  
Nelly Ramírez-Corona ◽  
Daniel Mascote-Pérez ◽  
Adriana Sánchez-Hijar ◽  
M. Isabel Fernández-Pastrana ◽  
Arturo Jiménez-Gutiérrez
Keyword(s):  
Dynamic Behavior ◽  
Thermally Coupled Distillation ◽  
Distillation Columns

Experimental Study for Dynamic Behavior of Cryogenic Distillation Columns Separating H-D-T System

1992 ◽  
Vol 21 (2P2) ◽  
pp. 948-953 ◽  
Author(s):  
T. Yamanishi ◽  
K. Okuno ◽  
M. Enoeda ◽  
J. Amano ◽  
T. Hayashi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Dynamic Behavior ◽  
Distillation Columns ◽  
Cryogenic Distillation ◽  
T System

Understanding the dynamic behavior of distillation columns

1988 ◽  
Vol 27 (10) ◽  
pp. 1848-1862 ◽  
Author(s):  
Sigurd Skogestad ◽  
Manfred Morari
Keyword(s):  
Dynamic Behavior ◽  
Distillation Columns

Development of a Dynamic Simulation Code for a VHTR-Aided SI Process

2008 ◽  
Author(s):  
Youngjoon Shin ◽  
Jiwoon Chang ◽  
Jihwan Kim ◽  
Kiyoung Lee ◽  
Wonjae Lee ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Dynamic Behavior ◽  
Dynamic Simulation ◽  
Sulfuric Acid Concentration ◽  
Chemical Reactor ◽  
Computer Code ◽  
Production Plant ◽  
Simulation Code ◽  
Distillation Columns ◽  
Equipment Sizing

In order to establish the optimal start-up method and to understand the dynamic behavior of the SI process coupled to a VHTR through an Intermediate Heat Exchanger (IHX), the development of a dynamic simulation code is necessary. Perturbation of the flow rate or temperature in input streams may result in various transient states. An understanding of the dynamic behavior due to these factors is very important to establish a safe operation method for a hydrogen production plant including a VHTR. Based on the mass and energy balance sheets of an electrodialysis-embedded SI process, proposed by KAERI, equivalent to a 200 MWth VHTR, not only the establishment of a thermal pathway (draft) between the SI process and the VHTR system but also the equipment sizing required in the SI process was carried out. A dynamic simulation code for the SI –2nd Skid (sulfuric acid concentration and decomposition part) was prepared at first for each chemical reactor. The reliability of the computer code has been confirmed by the convergence value at a steady state. This confirmation has been performed for the primary and secondary sulfuric acid distillation columns, the sulfuric acid vaporizer, the sulfuric acid decomposer, and the sulfur trioxide decomposer, respectively. An integrated computer code with a visualization function has been prepared by coupling each proven computer code, according to the thermal pathway. The dynamic behaviors of the integrated the SI-2nd Skid according to several anticipated scenarios were evaluated and the dominant and mild factors are discussed.

DYNAMIC BEHAVIOR OF REACTIVE DISTILLATION COLUMNS. EQUILIBRIUM SYSTEMS

1994 ◽  
Vol 128 (1) ◽  
pp. 19-42 ◽  
Author(s):  
JOSÉ ESPINOSA ◽  
ERNESTO MARTÍNEZ ◽  
GUSTAVO PÉREZ
Keyword(s):  
Dynamic Behavior ◽  
Reactive Distillation ◽  
Distillation Columns

Ball bearing turbocharger vibration management: application on high speed balancer

2020 ◽  
Vol 21 (6) ◽  
pp. 619
Author(s):  
Kostandin Gjika ◽  
Antoine Costeux ◽  
Gerry LaRue ◽  
John Wilson
Keyword(s):  
Dynamic Behavior ◽  
High Speed ◽  
Internal Combustion Engines ◽  
Ball Bearing ◽  
Squeeze Film ◽  
Design And Technology ◽  
Squeeze Film Damper ◽  
Damping Coefficients ◽  
Bearing Loads ◽  
Stiffness And Damping

Today's modern internal combustion engines are increasingly focused on downsizing, high fuel efficiency and low emissions, which requires appropriate design and technology of turbocharger bearing systems. Automotive turbochargers operate faster and with strong engine excitation; vibration management is becoming a challenge and manufacturers are increasingly focusing on the design of low vibration and high-performance balancing technology. This paper discusses the synchronous vibration management of the ball bearing cartridge turbocharger on high-speed balancer and it is a continuation of papers [1–3]. In a first step, the synchronous rotordynamics behavior is identified. A prediction code is developed to calculate the static and dynamic performance of “ball bearing cartridge-squeeze film damper”. The dynamic behavior of balls is modeled by a spring with stiffness calculated from Tedric Harris formulas and the damping is considered null. The squeeze film damper model is derived from the Osborne Reynolds equation for incompressible and synchronous fluid loading; the stiffness and damping coefficients are calculated assuming that the bearing is infinitely short, and the oil film pressure is modeled as a cavitated π film model. The stiffness and damping coefficients are integrated on a rotordynamics code and the bearing loads are calculated by converging with the bearing eccentricity ratio. In a second step, a finite element structural dynamics model is built for the system “turbocharger housing-high speed balancer fixture” and validated by experimental frequency response functions. In the last step, the rotating dynamic bearing loads on the squeeze film damper are coupled with transfer functions and the vibration on the housings is predicted. The vibration response under single and multi-plane unbalances correlates very well with test data from turbocharger unbalance masters. The prediction model allows a thorough understanding of ball bearing turbocharger vibration on a high speed balancer, thus optimizing the dynamic behavior of the “turbocharger-high speed balancer” structural system for better rotordynamics performance identification and selection of the appropriate balancing process at the development stage of the turbocharger.

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