Random Vibration and Stress Analysis of Fluidization Reactor System

Abstract—This dissertation work focuses on performing vibration analysis to find dynamic stress and defection of the fluidization reactor. Reactor consists of many vertical and horizontal stacks, ladder, platforms etc. It is constitutes complex dynamic system. While design reactor of petrochemical refineries. It is very important to consider vibration characteristics into account. Fluidization systems running at high temperature and pressure close to the natural frequency of the system results in excessive deformation and large stress which leads to catastrophic failure of the system. With a view to this, an effort has been made in carrying out a feasibility study of dynamic behavior like dynamic stresses and displacement of the structure to determine with well-established theoretical method and performing the FEA (Finite Element Analysis. FEA performing when the reactor is operating condition and nonoperating condition and conclusion is drawn based on the validation both theoretical and FEA results of dynamic analysis of the reactor.

Keywords— Reactor, ASME, Analytical Modal Analysis, FEA, Random Vibration analysis.

INTRODUCTION

Fluidized bed reactors are a relatively new tool in the chemical engineering field. The first fluidized bed gas generator was developed by Fritz Winkler in Germany in the 1920s.One of the first United States fluidized bed reactors used in the petroleum industry was the Catalytic Cracking Unit, created in Baton Rouge, LA in 1942 by the Standard Oil Company of New Jersey. This FBR and the many to follow were developed for the oil and petrochemical industries. Here catalysts were used to reduce petroleum to simpler compounds through a process known as cracking. The invention of this technology made it possible to significantly increase the production of various fuels in the United States. Today fluidized bed reactors are still used to produce gasoline and other fuels, along with many other chemicals. Many industrially produced polymers are made using FBR technology, such as rubber, vinyl, chloride, polyethylene, styrenes, and polypropylene. Various utilities also use FBR’s for coal gasification, nuclear power plants, and water and waste treatment settings.
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