System for automatic control of fluidized bed level in a catalytic cracking reactor with powdered catalyst

1969 ◽  
Vol 5 (5) ◽  
pp. 356-357
Author(s):  
V. G. Ginesin ◽  
A. Ya. Serebryanskii
Keyword(s):  
Automatic Control ◽  
Fluidized Bed ◽  
Catalytic Cracking ◽  
Powdered Catalyst

Analysis of fluidized bed catalytic cracking regenerator models in an industrial scale unit

1981 ◽  
Vol 59 (4) ◽  
pp. 549-553 ◽  
Author(s):  
H. I. De Lasa ◽  
A. Errazu ◽  
E. Barreiro ◽  
S. Solioz
Keyword(s):  
Fluidized Bed ◽  
Catalytic Cracking ◽  
Industrial Scale ◽  
Scale Unit

System for automatic control of pneumotransport conditions in catalytic cracking units

1975 ◽  
Vol 11 (7) ◽  
pp. 538-541
Author(s):  
D. M. Soskind ◽  
M. P. Bezuglov ◽  
N. P. Ushatinskaya ◽  
A. I. Obmochaev ◽  
E. Ya. Barsukov
Keyword(s):  
Automatic Control ◽  
Catalytic Cracking

scholarly journals Catalytic Cracking of Heavy Oil from Waste Plastic in Tapered Circulating Fluidized Bed Riser Reactor

2020 ◽  
Vol 141 ◽  
pp. 01012
Author(s):  
Parinya Khongprom ◽  
Thanapat Whansungnoen ◽  
Permsak Pienduangsri ◽  
Waritnan Wanchan ◽  
Sunun Limtrakul
Keyword(s):  
Fluidized Bed ◽  
Heavy Oil ◽  
Catalytic Cracking ◽  
Circulating Fluidized Bed ◽  
Fluid Model ◽  
Plastic Waste ◽  
Hydrodynamic Behavior ◽  
Continuous Increase ◽  
Waste Plastic ◽  
Two Fluid Model

Because of the continuous increase in the amount of plastic waste, catalytic cracking is an interesting method that could be used to convert heavy oil from thermal cracking of plastic waste into fuel. The objective of this study was to investigate the hydrodynamic behavior and the performance of catalytic cracking of heavy oil in a circulating fluidized bed reactor using computational fluid dynamics. The two– fluid model incorporated with the kinetic theory of granular flow was applied to predict the hydrodynamic behavior with a reactive flow. Three reactor geometries were studied, which included a conventional riser, tapered–out riser, and tapered–in riser. The four–lump kinetic model was used to describe the catalytic cracking of heavy oil from waste plastic. A core–annulus flow pattern was found in the three reactor geometries. The solid fraction distribution of the tapered reactor was found to be more uniform than that of the conventional riser. The tapered–in riser showed the highest heavy oil conversion with the lowest gasoline selectivity. However, the heavy oil conversion and gasoline selectivity of the conventional and tapered–out reactors were not significantly different.

scholarly journals Effect of Fines Content on Fluidity of FCC Catalysts for Stable Operation of Fluid Catalytic Cracking Unit

Energies ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 293 ◽  
Author(s):  
Sung Kim ◽  
Chae Yeo ◽  
Do Lee
Keyword(s):  
Fluidized Bed ◽  
Catalytic Cracking ◽  
Particle Diameter ◽  
Fluidized Bed Reactor ◽  
Fluid Catalytic Cracking ◽  
Stable Operation ◽  
Minimum Fluidization Velocity ◽  
Fines Content ◽  
Fluidization Velocity ◽  
Fcc Catalysts

Effect of fines content (weight % of particles with diameter less than 45 μm) on bed fluidity was determined to get a base for good fluidization quality in the fluid catalytic cracking (FCC) unit. The fines content in equilibrium FCC catalysts (Ecat) from commercial units were controlled by adding or removing the fines to simulate commercial situation. To get the fluidity values (Umb/Umf) of seven different FCC catalysts (2 Ecats and 5 fresh catalysts) and their mixture, minimum fluidization velocity (Umf) and minimum bubbling velocity (Umb) were measured in a fluidized bed reactor (0.05 m ID). The fluidity decreased with loss of fines content and increased with increments of makeup of fresh catalysts or additive with the controlled fines content. The fluidities of catalysts increase with increases of normalized particle diameter variation by the fines addition. The obtained fluidities have been correlated with the fines contents and the catalyst and gas properties. The proposed correlation could guide to keep good catalyst fluidity in the FCC unit.

Catalytic Fast Pyrolysis of Biomass in a Fluidized Bed with Fresh and Spent Fluidized Catalytic Cracking (FCC) Catalysts

2009 ◽  
Vol 23 (12) ◽  
pp. 6199-6206 ◽  
Author(s):  
Huiyan Zhang ◽  
Rui Xiao ◽  
Denghui Wang ◽  
Zhaoping Zhong ◽  
Min Song ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Catalytic Cracking ◽  
Fast Pyrolysis ◽  
Catalytic Fast Pyrolysis ◽  
Fluidized Catalytic Cracking ◽  
Pyrolysis Of Biomass ◽  
Fcc Catalysts

A ZSM-5-based Catalyst for Efficient Production of Light Olefins and Aromatics from Fluidized-bed Naphtha Catalytic Cracking

2008 ◽  
Vol 124 (1-2) ◽  
pp. 150-156 ◽  
Author(s):  
Jinlong Wan ◽  
Yingxu Wei ◽  
Zhongmin Liu ◽  
Bing Li ◽  
Yue Qi ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Catalytic Cracking ◽  
Light Olefins ◽  
Efficient Production
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