POWER Top Plants Supp December 2021 - 9

December 2021
POWER AWARDS
Taean IGCC Power Plant, South Korea
W
hen South Korea began developing
integrated gasification
combined cycle (IGCC) technology
in 2006 as part of a renewable
energy development project coordinated
by the Ministry of Knowledge Economy,
Doosan Heavy Industries & Construction
(DHIC) collaborated in this effort along with the Korea
Institute of Energy Technology Evaluation and Planning, and
Korea Western Power Co. (KOWEPO). In 2011, DHIC snagged
a $453 million contract with KOWEPO to build a 300-MW IGCC
demonstration project-the first-of-a-kind in the nation-at
the utility's existing 4-GW Taean power station in South Chungcheong
Province. Groundbreaking on the pioneering project
took place in November 2011, and following a remarkable
57-month construction timeframe-comprising 610,000 mandays
and 49,000 pieces of construction equipment-the Taean
IGCC project was declared operational on Aug. 16, 2016.
At the heart of the Taean IGCC unit's process is a gasification
facility developed by Shell. GE supplied a 7F syngas combustion
turbine, a D11 steam turbine, a heat recovery steam generator,
and the unit's Mark VIe integrated control system. At the
Taean IGCC plant, the 7F syngas turbine notably operates on
syngas produced from the gasification of low-Btu coal. DHIC
acted as both the gasification and air separation unit engineering,
procurement, and construction contractor.
Industry observers have reported that the project has functioned
mostly as designed. In November 2018, the unit refined
Korea Western Power Co.
its coal gasification gas extraction, and in November 2019, the
unit reportedly succeeded in refining a 99.99% high-purity
hydrogen. KOWEPO reportedly uses this refined hydrogen to
demonstrate a 100-kW fuel cell system that uses polymer electrolyte
technology. A project is reportedly underway to expand
that system to 10 MW by 2025.
Taean's long-term continuous operation is especially remarkable
because, owing to cost pressures and uncertainty
around carbon emissions policy, several iconic IGCC plants
have closed over the past decade. But underscoring the technology's
soundness, KOWEPO ran the plant continuously for
more than 4,000 hours between August 2020 and early February
2021. These hours were reportedly accident-free and set a
new world record for continuous IGCC operation without failure.
The previous records reported by the International Energy
Agency's Clean Coal Centre were 3,917 hours set by the Nakoso
IGCC facility in Japan in 2013, and 3,993 hours set by the
Tianjin IGCC facility in China in 2018. ■
Phnom Penh Power Plant, Cambodia
C
ambodia sustained an average
real growth rate of 7.7% between
1998 and 2019, making it one of
the fastest-growing economies in the
world. Rapid economic growth, coupled
with a tariff reduction policy, has caused
demand for electricity to also increase
dramatically in Cambodia over the past
20 years. The International Energy Agency reports Cambodia's
total electricity consumption grew exponentially from 0.4 TWh
in 2000, to 8.65 TWh in 2018.
One of the ways Cambodia's national utility, Electricité du
Cambodge (EDC), sought to increase flexibility was by adding a
200-MW power station in Phnom Penh, the nation's capital. In
August 2019, MAN Energy Solutions and China National Heavy
Machinery Corp. (CHMC) were jointly awarded a contract to
build the facility. CHMC took responsibility for the engineering,
procurement, and construction, while MAN was tasked with
delivering and commissioning dual-fuel reciprocating engines
for the new plant.
The Phnom Penh power plant consists of 11 MAN
18V51/60DF engines. At full load, the station can supply
enough electrical power to meet the average energy requirements
of about 70,000 Cambodian households. " The new
power plant will make a significant contribution to securing the
power supply in Cambodia, regardless of weather or climatic
conditions, " Wayne Jones, chief sales officer at MAN Energy
Solutions, said.
Supplement to POWER
MAN Energy Solutions
The schedule required the engines to be manufactured and
delivered to the site in less than six month, which MAN accomplished.
A highly coordinated and elaborate project management
process was also implemented to ensure the installation
remained on track. Among timesaving aspects employed was
a method of safely commissioning certain components, even
while mechanical work on related systems was still ongoing.
The project followed a tight timeline to successfully commission
all 11 engines in less than 20 months. Ultimately, the MAN
project team succeeded despite the numerous constraints
posed by COVID-19.
The Phnom Penh power plant will initially run on heavy fuel
oil. However, it is expected that the dual-fuel engines will operate
on natural gas in the future. The plant is located directly
on the banks of the Mekong River in the Lvea Aem district in
Kandal Province, with the potential to add a liquefied natural
gas terminal at a later date. ■
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POWER Top Plants Supp December 2021

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