Guide for Cyclic Deactivation of Fluid Catalytic Cracking (FCC) Catalysts with Metals

2013 ◽  
Author(s):  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Fcc Catalysts

Transformations of FCC catalysts and carbonaceous deposits during repeated reaction-regeneration cycles

2019 ◽  
Vol 9 (24) ◽  
pp. 6977-6992 ◽  
Author(s):  
Qandeel Almas ◽  
Muhammad Awais Naeem ◽  
Maria Auxiliadora S. Baldanza ◽  
Jessica Solomon ◽  
Jeffery C. Kenvin ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Carbonaceous Deposits ◽  
Fcc Catalyst ◽  
P Transformations ◽  
Fcc Catalysts

Transformations of an industrial zeolite-based fluid catalytic cracking (FCC) catalyst and its coke deposits during regeneration following FCC reactions of a representative refinery stream are investigated.

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.

Encapsulation of heavy metals on spent fluid catalytic cracking catalyst

1998 ◽  
Vol 38 (4-5) ◽  
pp. 211-217 ◽  
Author(s):  
D. Sun ◽  
X. Z. Li ◽  
M. Brungs ◽  
D. Trimm
Keyword(s):  
Catalytic Cracking ◽  
Environmental Problem ◽  
Effective Means ◽  
Fluid Catalytic Cracking ◽  
Leaching Tests ◽  
Weight Percentage ◽  
Spent Fcc Catalyst ◽  
Fcc Catalyst ◽  
Standard Specimens ◽  
Fcc Catalysts

Vanadium and nickel were found as major contaminants on spent FCC catalyst at levels of 3518 ppm and 3225 ppm, respectively. XPS results indicated that vanadium and nickel were in oxide form on spent FCC catalysts. Leaching tests (TCLP) showed that vanadium from spent FCC catalysts poses an environmental problem if disposed by landfill. It was found that encapsulation treatment with up to 60 wt % spent FCC catalyst in Portland cement, is an effective means of stabilization. The strength of standard specimens containing catalyst was much lower than that of standard specimens made with same weight percentage of sand.

Sign in / Sign up

Export Citation Format

Share Document