3
2.4
20% WPO conventional conversion - VGO @ 75% conversion
2.0
20% PS 20% PP
2
1.1
1
0.7
0.5
Dry gas
Propylene
CTO
Coke
LCO
LPG
0
Gasoline
Bottoms
-0.1
-0.1
-0.3 -0.3
-0.3 -0.5
-0.5
-0.5
C Olefins
-1
-1.0
-1.1
-1.4
-1.6
-1.6
-2
-3
3
2.3
20% WPO e ective conversion - VGO @ 75% conversion
2.3
20% PS_Corr 20% PP_Corr
2
1.1
1.1
0.9
CTO
1
0.3
Bottoms
LCO
0.1 0.2
0.1
0.0
0
Gasoline
C Olefins
Propylene
-0.1
-0.3
-0.3
Dry gas
-0.5
-0.5
Coke
-1
LPG
-1.3
-2
-1.8
-2.4
-3
Figure 4 Delta yields comparing co-processing of 20 wt% PP-WPO in VGO and 20 wt% PS-WPO in VGO to a 100% VGO baseline using a baseline Ketjen catalyst techology. The top plot uses the standard 430F+ conversion to compare the changes in the product slate at an iso-conversion of 75%. The bottom plot uses the effective conversion to determine the impact of introducing naphtha fractions from the WPO into the feed
This conversion subtracts the fraction of naphtha initially present in the feed, leading to a more accurate interpreta- tion of the impact of catalyst and feed on product distribu- tion during WPO co-processing. Applying this effective conversion leads to the observa- tion that the slurry yield (bottom of Figure 4) is lower during WPO co-processing compared to 100% VGO processing, and clear differences in the product slate for the different WPOs emerge. The addition of PS-WPO shows a slight reduction in LPG, LCO, and bottoms, while there is an increase in coke. Compared to co-processing PP-WPO, there is an increase in LPG that is mainly a result of increased C₄ olefins. The feed impact differences between PS and PP-derived oils can be directly related to their hydrocarbon composition. Due to the aromatic nature of the PS-WPO, there is minimal impact on LPG yield, LPG olefins, and increased coke selectivity.
However, the PP-WPO, comprised mainly of iso-olefins, results in increased C₄= and a reduction in coke. Flexibility FCC units offer almost unparalleled flexibility for pro - cessing a wide diversity of feedstocks. The International Sustainability and Carbon Certification (ISCC) is a good indicator of current trends for processing renewables and recyclables (R&R). Reliable catalyst solutions to address the introduction of a wide variety of R&R are being considered and investigated for FCC co-processing. Against this backdrop, ReNewFCC offers the same degree of flexibility and effectiveness in addressing dif - ferent operations, feeds, and yield objectives featured in Ketjen’s established portfolio of more conventional FCC catalysts, building on a foundation of industry-leading bot- toms upgrading and metals tolerance to create solutions
3
Standard Technology-20% PP -WPO vs Standard Technology-VGO ReNewFCC CircularMax -20% PP -WPO vs Standard Technology-VGO
2.5
2
1.5
1
0.5
Dry gas
H
LCO
Coke
0
C =
650F+
C =
C =
-0.5
LPG
Gasoline
-1
-1.5
Figure 5 Delta yields from processing 100% VGO over a standard light olefin catalyst technology, demonstrating the comparative impact of co-processing 20 wt% PP-WPO over the standard and ReNewFCC catalyst technologies at a standard (430F+) conversion of 75%
30
PTQ Q2 2024
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