20 th December. 2022

PRESS RELEASE

Chiyoda Corporation
Taiyo Oil Company, LimitedAchieve stabilized catalytic activity at RFCC device by utilizing
EFEXIS ® FCC AI Optimizer ®

Chiyoda Corporation (Chiyoda, TSE:6366; ISIN: JP3528600004) is pleased toannounce that Taiyo Oil Company, Limited (Taiyo Oil) achieved stabilizing catalyst
conversion by reducing the deviation between the targeted value and measured valueof catalyst conversion at the RFCC unit by 20% utilizing Chiyoda's EFEXIS® FCC AIOptimizer® (FCC AIO®).
Taiyo Oil is advancing smart factory initiatives at Shikoku operations and furthermaximizing its profits through productivity increases. Chiyoda’s support of Taiyo Oil’ssmart factory initiative is improving the plant’s competitiveness and safety.

１．Service Outline
Solution Name：EFEXIS®
Target Device: RFCC Unit
Start Date： April 1, 2021

FCC AI Optimizer® (FCC AIO®).

Purpose ： To maximize profits through increasing productivity by achieving
advanced optimization of equipment operation and yield improvement.
Background：Taiyo Oil is advancing smart factory initiatives at Shikoku operations
by utilizing "smart operation management", "smart maintenance management","smart environment management", and "smart production management and quality
management" to achieve world-class competitiveness and safety in Asia. Inaddition, Taiyo Oil has concluded that smart factory solutions are instrumental insolving issues in Shikoku operations such as unplanned maintenance slowdowns
during operation and technology transfer from a senior operator to a junior operator.
2. Achievement
Before installing the FCC AIO ® , operators calculated the fresh catalyst addition rateusing an empirical equation based on the measured data of catalyst conversion from theprevious two-weeks. After installation, FCC AIO ® enabled the real-time prediction ofcatalyst conversion by utilizing Artificial Intelligence (AI) incorporating the data including
past measured data and current characteristics of crude oil data as inputs, thus
contributing to the optimization of fresh catalyst consumption.
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As a result of one year of operation beginning April 2021, the deviation between themeasured data and the targeted catalyst conversion rate is reduced by 20% compared
to before the installation, and the stabilization of catalyst conversion has been achieved.

↑Measured Catalyst Conversion Value（ Before Installation of FCC AIO ® ）Deviation between the targeted catalyst conversion rate
and the measured value = 20%↓

↑Measured Catalyst Conversion Value（ After Installation of FCC AIO ® ）↑AI System in Use↑RFCC Unit

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＜Reference Information＞
1. About Chiyoda
I. Headquarters
II. Main Business: 4-6-2, Minatomirai, Nishi-ku, Yohohama, Japan: Integrated engineering including consulting, planning, engineering,procurement, construction, commissioning and maintenance forfacilities related to gas, electricity, petroleum, petrochemical,chemical, pharmaceutical, antipollution, environment, preservationand other services. Mineral resource exploration and investment,including oil and gas.
III. Representative : Mr. Masakazu Sakakida, Chairman of the Board, President & CEO

2. About Taiyo Oil
I. Headquarters
II. Main BusinessIII. Representative: 15F Hibiya Kokusai Bldg., 2-2-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo,
Japan: ・Import, export, refining, and marketing of petroleum products.
・Manufacturing, processing, and sales ofpetrochemical-based products, including benzene and xylene.
: Mr. Yutaka Oka, President & CEO【For【Formore
information,pleasecontact】【Formoremoreinformation,information,pleasepleasecontact】
contact】
ChiyodaChiyodaCorporation
ChiyodaCorporation
Corporation
IR,IR,
PR
Sustainability
Advanced
SectionIR,PR
PR&&&Sustainability
SustainabilityAdvanced
AdvancedSection
SectionE-mail:E-mail:irpr@chiyodacorp.com
E-mail:irpr@chiyodacorp.com
irpr@chiyodacorp.com
URL:
https://www.chiyodacorp.com/en/contact/index.php
URL:
https://www.chiyodacorp.com/jp/contact/index.php
URL: https://www.chiyodacorp.com/jp/contact/index.php【For more information, please contact】
Taiyo OilCSR Group
E-mail: koho@mail.taiyooil.co.jp
URL: https://taiyooil.net/english/

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