Journal ArticleDOI
Electrostatics and gas phase fluidized bed polymerization reactor wall sheeting
TLDR
In this paper, the authors proposed to reduce the frequency of wall sheeting incidents and decrease the cost of operating fluidized bed polymerization reactors by reducing the excess electrostatic charge.About:
This article is published in Chemical Engineering Science.The article was published on 2006-02-01. It has received 168 citations till now. The article focuses on the topics: Fluidized bed & Chemical reactor.read more
Citations
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Journal ArticleDOI
Contact electrification of insulating materials
TL;DR: The electrostatic charge that is generated when two materials are contacted or rubbed and then separated is a well-known physical process that has been studied for more than 2500 years as discussed by the authors.
Journal ArticleDOI
Charge segregation depends on particle size in triboelectrically charged granular materials.
TL;DR: A methodology is developed so that only particle-particle interactions (but not particle-wall interactions) contribute to the charging of triboelectric charging in granular systems composed of particles that are chemically identical but differ in size.
Journal ArticleDOI
Investigation of electrostatic charge distribution in gas–solid fluidized beds
TL;DR: In this paper, a new system was developed that aimed to quantifying the electrostatic charge generation in three key areas within a gas-solid fluidized bed simultaneously: the bed particles, the particles that adhered to the column wall, and those that were entrained from the column.
Journal ArticleDOI
Computational fluid dynamics and electrostatic modeling of polymerization fluidized-bed reactors
TL;DR: In this article, a first-principles electrostatic model is developed and coupled with a multi-fluid computational fluid dynamic (CFD) model to understand the effect of electrostatics on the bulk polymer, polymer fines, and catalyst particles.
Journal ArticleDOI
CFD simulation of fluidized bed reactors for polyolefin production – A review
Mohammad Jakir Hossain Khan,Mohamed Azlan Hussain,Zahra Mansourpour,Navid Mostoufi,Nayef Ghasem,Ezzat Chan Abdullah +5 more
TL;DR: In this paper, a literature survey focusing on the application of computational fluid dynamics (CFD) in various aspects of the fluidized bed reactor is presented, which highlights the use of CFD on polyolefin production.
References
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Book
Unit Operations of Chemical Engineering
TL;DR: In this paper, the authors define heat transfer and its applications: heat transfer by conduction principles of heat flow in fluids, heat transfer to fluids without phase change heat transfer in fluids with heat change radiation heat transfer heat-exchange equipment evaporation.
Patent
Method for reducing sheeting during polymerization of alpha-olefins
TL;DR: In this paper, a method for reducing sheeting during polymerization of alpha-olefins by feeding either a positive charge generating or negative charge generating chemical additive to the reactor responsive to particular static levels in the reactor is presented.
Journal ArticleDOI
Influence of particle size, fluidization velocity and relative humidity on fluidized bed electrostatics
TL;DR: In this paper, the influence of particle size, d p fluidization velocity, U r, and relative humidity, RH, on the degree of electrification reached by a fluidized bed of glass beads has been studied.
Patent
Process for reducing sheeting during polymerization of alpha-olefins
TL;DR: In this paper, a process for reducing sheeting during production of polyolefins by polymerization of alpha-olefs utilizing titanium-based polymerization catalysts was proposed, where the static electric charges in the reactor at the site of possible sheet formation were maintained below static voltage levels which would otherwise cause sheet formation.
Journal ArticleDOI
On electrostatic effects in fluidized beds
J. Ciborowski,A. Wlodarski +1 more
TL;DR: The classical theory of fluidization does not take into account the possibility of the occurrence, in fluidized beds, of electrical forces conditioned by static electricity as discussed by the authors, and the electric charges which accumulate on solid particles may cause the adhesion of a layer of solid particles to the walls of the fluidizing equipment.