Optimal grade transition and selection of closed-loop controllers in a gas-phase olefin polymerization fluidized bed reactor

2003 ◽  
Vol 58 (16) ◽  
pp. 3643-3658 ◽  
Author(s):  
C. Chatzidoukas ◽  
J.D. Perkins ◽  
E.N. Pistikopoulos ◽  
C. Kiparissides
Keyword(s):  
Gas Phase ◽  
Fluidized Bed ◽  
Closed Loop ◽  
Olefin Polymerization ◽  
Fluidized Bed Reactor ◽  
Grade Transition ◽  
Selection Of

OPTIMISATION OF GRADE TRANSITIONS IN AN INDUSTRIAL GAS-PHASE OLEFIN POLYMERIZATION FLUIDIZED BED REACTOR VIA NCO TRACKING

2005 ◽  
Vol 38 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Christos Chatzidoukas ◽  
Costas Kiparissides ◽  
Bala Srinivasan ◽  
Dominique Bonvin
Keyword(s):  
Gas Phase ◽  
Fluidized Bed ◽  
Olefin Polymerization ◽  
Fluidized Bed Reactor

Gas phase hydrodynamics of a gas-solid turbulent fluidized bed reactor

1996 ◽  
Vol 51 (5) ◽  
pp. 713-723 ◽  
Author(s):  
M. Foka ◽  
J. Chaouki ◽  
C. Guy ◽  
D. Klvana
Keyword(s):  
Gas Phase ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Turbulent Fluidized Bed

Cold-Model Study on Fluidized-Bed Photo-Oxidation Reactor for Shenfu Coal

2011 ◽  
Vol 201-203 ◽  
pp. 2741-2744
Author(s):  
Ya Ting Zhang ◽  
Guang Heng Wang ◽  
Wei Zhao ◽  
An Ning Zhou
Keyword(s):  
Particle Size ◽  
Gas Phase ◽  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Pipe Diameter ◽  
Flow State ◽  
Cold Model ◽  
Photo Oxidation ◽  
Model Study ◽  
Oxidation Reactor

The flow state of both the solid and gas phase in the fluidized-bed photo-oxidation reactor for Shenfu coal was studied by cold-model tests. The results showed that the appropriate pipe diameter, particle size of coal, and the coal addition for the gas-solid fluidized-bed reactor were 22 mm, 60-80 mesh, and 10g, respectively.

The Phase Transformations during Fluidized-Bed Combustion of Biomass

2013 ◽  
Vol 419 ◽  
pp. 366-369 ◽  
Author(s):  
Hai Peng Teng ◽  
Bin Yang ◽  
Bin Liang
Keyword(s):  
Gas Phase ◽  
Fluidized Bed ◽  
Solid Phase ◽  
Fluidized Bed Reactor ◽  
Biomass Combustion ◽  
Material Surface ◽  
Fluidized Bed Combustion ◽  
Biomass Ash ◽  
Equilibrium Modeling ◽  
Bed Material

FactSage6.1 was used to study the phase transformation at high temperature when biomass combustion in a fluidized bed reactor. The results show that eutectic was formed during the reaction process, the eutectics are formed mainly by the reaction between the silica in bed particles and the alkali species in biomass ash. The solid phase transformed to melt layer on the surface of sands particle mainly contains potassium, some calcium and magnesium, and also a few phosphorus and chlorine are found in the melt layer. The result utilizing FactSage equilibrium modeling shown that the distribution ratio of potassium in the gas phase increased with the increase of temperature, moreover, the melt of bed material surface increased when defluidized occurred.

Modified mathematical model for gas phase olefin polymerization in fluidized-bed catalytic reactor

2009 ◽  
Vol 149 (1-3) ◽  
pp. 353-362 ◽  
Author(s):  
Ahmmed S. Ibrehem ◽  
Mohamed A. Hussain ◽  
Nayef M. Ghasem
Keyword(s):  
Mathematical Model ◽  
Gas Phase ◽  
Fluidized Bed ◽  
Olefin Polymerization ◽  
Catalytic Reactor

From noise to information: a new technology of olefin polymerization fluidized bed reactor based on acoustic emission

2017 ◽  
Vol 18 (4) ◽  
pp. 245-255 ◽  
Author(s):  
Hao-tong Wang ◽  
Zheng-liang Huang ◽  
Zu-wei Liao ◽  
Bin-bo Jiang ◽  
Jing-dai Wang ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fluidized Bed ◽  
Olefin Polymerization ◽  
New Technology ◽  
Fluidized Bed Reactor
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