Catalyst Formulations with Improved Performance via Variable Composition Control as a Function of Particle Size
This invention provides for a method of making a spray-dried catalyst composition for use in any hydrocarbon conversion process. The particle size of the components is adjusted to improve the functionality of the catalyst for specific reactions. This invention also provides for a composite catalyst composition for use in any hydrocarbon conversion process that is dependent on the particle size.
1 . A method of making a spray-dried catalyst composition for use in any hydrocarbon conversion process comprising:
(a) removing more than 90% of particles above a specified threshold; and
(b) reprocessing the removed particles for re-use in the same or another hydrocarbon conversion process.
2 . The method of claim 1 wherein the removed particles are reduced in particle size.
3 . The method of claim 1 wherein the spray-dried catalyst composition is a fresh composition.
4 . The method of claim 1 wherein the spray-dried catalyst composition is an equilibrium composition.
5 . The method of claim 1 wherein the spray-dried catalyst composition is a combination of fresh catalyst and equilibrium catalyst.
6 . The method of claim 1 wherein the particles larger than the specified threshold are removed by air classification.
7 . The method of claim 1 wherein the particles larger than the specified threshold are removed by screening.
8 . The method of claim 1 wherein the particles larger than the specified threshold are removed by a combination of air classification and screening.
9 . The method of claim 1 wherein the specified threshold is 110 microns.
10 . The method of claim 1 wherein the specified threshold is 100 microns.
11 . The method of claim 1 wherein the specified threshold is 90 microns.
12 . The method of claim 1 wherein the specified threshold is 80 microns.
13 . The method of claim 1 wherein the specified threshold is 70 microns.
14 . The method of claim 1 wherein the specified threshold is 60 microns.
15 . The method of claim 1 wherein the specified threshold is 50 microns.
16 . The method of claim 1 wherein the specified threshold is 40 microns.
17 . The method of claim 1 wherein the specified threshold is 30 microns.
18 . The method of claim 1 wherein the specified threshold is 20 microns.
19 . The method of claim 1 including using a metal trap to passivate Nickel and Vanadium.
20 . The method of claim 1 wherein the hydrocarbon conversion process depends on particle size for reaction rate or yields.
21 . The method of claim 2 wherein the spray-dried catalyst composition is a fresh composition.
22 . The method of claim 2 wherein the spray-dried catalyst composition is an equilibrium composition.
23 . The method of claim 2 wherein the spray-dried catalyst composition is a combination of fresh catalyst and equilibrium catalyst.
24 . The method of claim 2 wherein the particles larger than the specified threshold are removed by air classification.
25 . The method of claim 2 wherein the particles larger than the specified threshold are removed by screening.
26 . The method of claim 2 wherein the particles larger than the specified threshold are removed by a combination of air classification and screening.
27 . The method of claim 2 wherein the specified threshold is 110 microns.
28 . The method of claim 2 wherein the specified threshold is 100 microns.
29 . The method of claim 2 wherein the specified threshold is 90 microns.
30 . The method of claim 2 wherein the specified threshold is 80 microns.
31 . The method of claim 2 wherein the specified threshold is 70 microns.
32 . The method of claim 2 wherein the specified threshold is 60 microns.
33 . The method of claim 2 wherein the specified threshold is 50 microns.
34 . The method of claim 2 wherein the specified threshold is 40 microns.
35 . The method of claim 2 wherein the specified threshold is 30 microns.
36 . The method of claim 2 wherein the specified threshold is 20 microns.
37 . The method of claim 2 including using a metal trap to passivate Nickel and Vanadium.
38 . The method of claim 2 wherein the hydrocarbon conversion process depends on particle size for reaction rate or yields.
39 . A composite catalyst composition for use in any hydrocarbon conversion process that is dependent on the particle size.
40 . The composite catalyst of claim 39 formed by the blending of two or more components with different compositions and different particle size distribution.
41 . The composite catalyst of claim 39 wherein at least one of the components contains a limitation on the particle size.
42 . The composite catalyst of claim 39 wherein no more than 5% of the particles are larger than 110 microns and no more than 5% of the particles are smaller than 20 microns.
43 . The composite catalyst of claim 39 wherein one of the components contains ZSM-5 or other MFI zeolite.
44 . The composite catalyst of claim 39 wherein the components may be separated into two or more fractions with different chemical compositions for possible reuse.
45 . A composite catalyst composition formulated for a specific hydrocarbon conversion process by size distribution.
46 . The composite catalyst of claim 45 with a high amount of matrix activity and a standard FCC catalyst for bottoms conversion.
47 . The composite catalyst of claim 45 for use with bottoms conversion having a low zeolite to matrix composition with more than 95% of its particles less than 80 microns and up to 50% of a ZSM-5 additive with optimized particle size distribution.