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YOKOGAWA ELECTRIC CORPORATION
World Headquarters
9-32, Nakacho 2-chome, Musashino-shi, Tokyo 180-8750, Japan
http://www.yokogawa.com/
YOKOGAWA CORPORATION OF AMERICA
12530 West Airport Blvd, Sugar Land, Texas 77478, USA
http://www.yokogawa.com/us/
YOKOGAWA EUROPE B.V.
Euroweg 2, 3825 HD Amersfoort, The Netherlands
http://www.yokogawa.com/eu/
YOKOGAWA ENGINEERING ASIA PTE. LTD.
5 Bedok South Road, Singapore 469270, Singapore
http://www.yokogawa.com/sg/
YOKOGAWA CHINA CO., LTD.
3F TowerD Cartelo Crocodile Building,
No.568 West Tianshan Road, Shanghai 200335, China
http://www.yokogawa.com/cn/
YOKOGAWA MIDDLE EAST & AFRICA B.S.C.(c)
P.O. Box 10070, Manama,
Building 577, Road 2516, Busaiteen 225, Muharraq, Bahrain
http://www.yokogawa.com/bh/
Visit our website at:
https://www.yokogawa.c om/industrie s/power/
Yokogawa Solutions for
Flue Gas Desulfurization
and Denitrification
Bulletin 53T01A03-01EN
1 Yokogawa Solutions for Flue Gas Desulfurization and Denitrication
Yokogawa FGD solutions help optimize the operation of FGD systems and achieve
the Sustainable Development Goals (SDGs) while minimizing running costs. A wide
variety of solutions based on our extensive experience and track record all over the
world ensure the ideal operation.
Yokogawa Solutions for Flue Gas DeSOx and DeNOx
Field instruments
For accurate measurement with minimum maintenance, it is essential to select highly
reliable field instruments.
Pressure/differential pressure transmitters
Yokogawa’s proven pressure and differential pressure transmitters can meet almost any
process measurement needs. Silicon resonant sensors developed by Yokogawa ensure
reliable measurement with high performance and robustness.
Temperature transmitters
Yokogawa’s temperature transmitters provide accurate and reliable temperature
measurement.
Electromagnetic flowmeters
Yokogawa’s electromagnetic flowmeters are an excellent choice to measure and control
the flow of abrasive and erosive limestone slurry to the sprayers, etc.
Flue gas analyzer system
Monitoring of FGD inlet and outlet flue gas is essential to measure the
concentrations of SO
2
and other components. As the concentration of SO
2
in flue gas is a key index of FGD performance and compliance with emission
regulations, a reliable online emission monitoring system is essential for ideal
operation of an FGD plant. Yokogawa offers a flue gas analyzer system comprising a combination of high-end
Yokogawa products with some third-party devices to deliver stable FGD control.
pH analyzers
Unstable pH measurement can have a significant adverse effect on the
entire FGD performance, and so pH measurement is one of the critical parts
of FGD control. Yokogawa’s pH analyzers developed based on its extensive
experience and knowledge ensure accurate and stable pH measurement.
Optimization of wet-scrubber FGD
With its optimization system, Yokogawa can minimize the total cost of ownership while
keeping the FGD system with wet-limestone scrubbing in the ideal condition. The
optimization system has been proven to perform well at large-scale coal-fired power
plants in Japan; major improvements achieved include the following:
Cost reduction by optimizing pump operation
Yokogawa’s FGD optimization system determines the optimum number of
recirculation pumps required to run to keep the sulfur dioxide (SO
2
) concentration
in the outlet flue gas below the regulatory limit, thus reducing the consumption of
electricity and limestone slurry and minimizing the cost of FGD operation.
Highly stable pH of slurry
The pH value of limestone (or lime) slurry is a key parameter that can be controlled to maximize the removal
of sulfur oxides (SOx) while minimizing scale buildup, thus maintaining optimum FGD performance while
avoiding unexpected problems. Yokogawa’s optimization system stabilizes the pH of the slurry regardless of
the process conditions.
Effective removal of SO
2
from flue gas
The primary objective of the FGD is to remove sulfur dioxide from flue gas. Yokogawa’s FGD optimization
system ensures that SO
2
emissions are kept below the regulatory limit at the lowest cost.
Proven control and monitoring system that digitizes the FGD system
Yokogawa, with its abundant experience in multiple FGD
systems and providing control and monitoring solutions,
has long played a key role in FGD system control.
The service is not only for new power plants but is also ideal
for retrofitting existing conventional systems. Digitized FGD
systems with a retrofitted control system bring financial and
safety benefits to customers.
Yokogawa Solutions for Flue Gas Desulfurization and Denitrication 2
Yokogawa FGD solutions help optimize the operation of FGD systems and achieve
the Sustainable Development Goals (SDGs) while minimizing running costs. A wide
variety of solutions based on our extensive experience and track record all over the
world ensure the ideal operation.
Yokogawa Solutions for Flue Gas DeSOx and DeNOx
Field instruments
For accurate measurement with minimum maintenance, it is essential to select highly
reliable field instruments.
Pressure/differential pressure transmitters
Yokogawa’s proven pressure and differential pressure transmitters can meet almost any
process measurement needs. Silicon resonant sensors developed by Yokogawa ensure
reliable measurement with high performance and robustness.
Temperature transmitters
Yokogawa’s temperature transmitters provide accurate and reliable temperature
measurement.
Electromagnetic flowmeters
Yokogawa’s electromagnetic flowmeters are an excellent choice to measure and control
the flow of abrasive and erosive limestone slurry to the sprayers, etc.
Flue gas analyzer system
Monitoring of FGD inlet and outlet flue gas is essential to measure the
concentrations of SO
2
and other components. As the concentration of SO
2
in flue gas is a key index of FGD performance and compliance with emission
regulations, a reliable online emission monitoring system is essential for ideal
operation of an FGD plant. Yokogawa offers a flue gas analyzer system comprising a combination of high-end
Yokogawa products with some third-party devices to deliver stable FGD control.
pH analyzers
Unstable pH measurement can have a significant adverse effect on the
entire FGD performance, and so pH measurement is one of the critical parts
of FGD control. Yokogawa’s pH analyzers developed based on its extensive
experience and knowledge ensure accurate and stable pH measurement.
Optimization of wet-scrubber FGD
Highly stable pH of slurry
The pH value of limestone (or lime) slurry is a key parameter that can be controlled to maximize the removal
of sulfur oxides (SOx) while minimizing scale buildup, thus maintaining optimum FGD performance while
avoiding unexpected problems. Yokogawa’s optimization system stabilizes the pH of the slurry regardless of
the process conditions.
Effective removal of SO
2
from flue gas
The primary objective of the FGD is to remove sulfur dioxide from flue gas. Yokogawa’s FGD optimization
system ensures that SO
2
emissions are kept below the regulatory limit at the lowest cost.
Proven control and monitoring system that digitizes the FGD system