Catalyst Handbook - 2020 - 397
2020 CATALYST HANDBOOK
INDUSTRY CATEGORIES
PROCESS CATEGORIES
COMPANY INDEX
REFINING
Sulfur recovery/removal
FCAS Adsorbents
Application: FCAS Adsorbents (Fig. 1) are the proprietary adsorbents for S Zorb SRT
to remove most of the sulfur species from FCC gasoline without significant RON loss.
Description: S Zorb is a widely applied technology for upgrading gasoline from Euro 4
(equivalent as China National 4) specifications to Euro 6 (equivalent as China National
6) specifications. It is operated under much lower H2 pressure, in comparison to the
normal hydrodesulfurization process.
FCAS Adsorbents were designed with unique, multi-metal elements as active
components with highly stable matrixes that exhibited high catalytic activity and
selectivity for ultra-deep desulfurization. The FCAS-R09 Adsorbent was developed
for FCC raw gasoline, with a good balance between the desulfurization rate and
RON loss. FCAS-II is specifically designed for the processing of high-sulfur FCC feed.
Advantages: FCAS Adsorbents adopt the proprietary preparation technology, thereby
ensuring excellent mechanical stability, little sorbent loss during fluidization and narrow
particle size distribution. It has a high desulfurization rate, low gasoline RON loss and is
versatile for various feedstocks with different sulfur contents. It is capable of producing
upgraded gasoline with a sulfur content lower than 10 ppm1 (Table 1).
Economics: FCAS Adsorbents have been commercialized and applied in more than
35 S Zorb units with a total processing capacity of more than 45 MMtpy. FCAS
Adsorbents can achieve long-term stable production of clean gasoline from highsulfur-containing feeds, with low energy and low H2 cost. Using FCAS-II in a
900,000-tpy S Zorb unit gives additional profit of more than CNY 50 MM/year.
Development: The first-generation FCAS-R09 Adsorbent was developed in 2009,
and the high-stability S Zorb FCAS-II was developed in 2019. The next-generation,
RON-improving S Zorb sorbent was under development as of 2020.
Reference:
1. Wei, L. and J. Long, " From the mechanism of reaction chemistry to
commercial application II, the design and performance of S Zorb catalyst, "
Acta Petrolei Sinica (Petroleum Processing Section), April 2015.
Supplier: Sinopec Catalyst Company Limited
Website: https://sinopec.imeeton.com/product-solutions/S-Zorb-Adsorbent
Fig. 1. FCAS Adsorbents.
Table 1. Economic and technical indicators of S Zorb technology
Contrast technology
S Zorb
Other advanced technology
Operation cycle, months
> 36
> 36
Desulfurization activity, %
99-99.6
99
RON loss
0.28-1
1-2
Energy consumption
4.5-7
15-20
Hydrogen consumption
0.18
0.3
H2S
No
Yes
Contact: jiangxm.chji@sinopec.com
Copyright © 2020 Gulf Energy Information. All rights reserved.
https://www.hydrocarbonprocessing.com/
https://sinopec.imeeton.com/product-solutions/S-Zorb-Adsorbent
Catalyst Handbook - 2020
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