Presentation of Kawasaki
FGD and SCR System
March 12, 2012
Main Topics
1. History of Kawasaki FGD
2. Process Feature of Kawasaki FGD
3. Experience of Kawasaki FGD
4. Introduction of Kawasaki SCR
FGD: Flue Gas Desulfurization
SCR: Selective Catalytic Reduction
All photos quoted from http://www.nationalgeographic.co.jp/environment/photos
To Keep Our Earth Clean
SO2 (Sulfur Dioxide)
NOX (Nitrogen Oxide) Acid Rain
Combustion of coal or oil
in boilers
http:// www.nationalgeographic.co.jp /environment/photos
Kawasaki has been supplying;
- Flue Gas Desulfurization (FGD) Plants for SO2 removal
- Selective Catalytic Reduction (SCR) Plants for NOx removal
Kawasaki FGD History Summary
In 1968, Kawasaki started R&D of FGD process and developed
its own Magnesium-gypsum process and Limestone-gypsum
process.
As of end of 2011 Kawasaki has installed total 111 Plants (42 in
Japan and 59 Overseas), which covers 28,500 MW.
Equivalent(MW)
30000
25000
Limestone-
20000
gypsum process
15000
10000
5000
Magnesium-
0 gypsum process
'73∼'77 ∼'82 ∼'87 ∼'92 ∼'97 ∼'02 ∼'07 ∼Now
Kawasaki FGD Technology applies to one of
the largest coal fired power plants in the world
Unit 2 (700MW)
in 1991
Unit 4,5 (1,000MW x 2)
in 2001, 2002
Hekinan Thermal Power Station, Japan
Total 4,100 MW Capacity (700MW x 3units +1000MW x 2 units)
Kawasaki FGD technology covers 2,700MW capacity
Features of Kawasaki FGD Technology
1. Kawasaki Compact Absorber
SO2 and dust in flue gas are removed
by efficient contact with absorbent slurry
Advantages
1) Absorber height lowered
2) Easy maintenance achieved
Features of Kawasaki FGD Technology
2. Kawasaki Spiral Spray Nozzle
Specification Advantages
Type : Spiral 1) High SO2 and dust removal performance
Material: Ceramics 2) High flow rate and low spray pressure
3) Less clogging due to large throat diameter
4) High durability to erosion and corrosion
Advantages of Kawasaki FGD Technology
With applying Kawasaki Compact Absorber and
Kawasaki Spiral Spray Nozzle, Kawasaki achieves;
1. Superior Performance
Kawasaki’s spiral water curtain spray
nozzle achieves superior SO2 and dust
removal efficiency.
2. High Reliability
Kawasaki has achieved the highest
level of successful operational
reliability.
3. Low Energy Consumption
Adequate spray pressure achieves the
lowest practical level of energy
consumption.
4. Easy Maintenance
Simple absorber design and mist
eliminator located outside absorber
make maintenance work easier.
Kawasaki FGD / Wet Limestone-Gypsum Process
Main Equipment
Boost Up Fan (BUF) Circulation Pump
Gypsum Separator Ball Mill
Easy and Reliable Operation
DCS Operation
All equipment in FGD is
operated and controlled by
Distributed Control System
(DCS).
The important controlling
factors for FGD performance,
are performed automatically
by DCS according to boiler
operation condition.
Advanced FGD Design
Flow Simulation Droplet Flow Analysis
Kawasaki can; Kawasaki can;
1. Confirm uniform flow balance 1. Check spray droplets behavior
2. Avoid gas short-pass 2. Select optimized gas velocity
3. Avoid scaling trouble 3. Reduce carried mist
4. Minimize pressure loss
Advanced FGD Design
FEM Stress Analysis 3D Piping Design
Kawasaki can; Kawasaki can;
1. Check structural design 1. Determine appropriate piping route
2. Select adequate reinforcement 2. Check no interference among
piping, equipment structure, etc
(FEM: Finite Element Method) 3. Avoid site modification work
Recent FGD Experience
Hekinan Thermal Power Station
Unit No.4, 5
Client: Chubu Electric Power Co. Inc.
Location: Hekinan Aichi, Japan
Fuel: Coal
Boiler Capacity: 1000MW x 2
Commercial Operation: 2001, 2002
Anan Thermal Power Plant No.3
Client: Shikoku Electric Power Co. Inc.
Location: Anan Tokushima, Japan
Fuel: Oil
Boiler Capacity: 450MW x 1
Commercial Operation: 1998
Recent FGD Experience
Opatovice Power Plant No.1~6
Client: Elektrany Opatovice
Location: Pardubice, Czech Republic
Fuel: Coal
Boiler Capacity: 55 MW x 6
(Total: 330MW)
Commercial Operation: 1996, 1997
Ho-Ping Power Plant Unit No.1, 2
Client: Ho-Ping Power Company Co., LTD.
Location: Ho-Ping, Taiwan
Fuel: Coal
Boiler Capacity: 660MW x 2
Commercial Operation: 2002
Recent FGD Experience
Anshun Power Plant Unit No.3, 4
Client: Guizhou Electric Power Corp.
Location: Anshun Guizhou, China
Fuel: Coal
Boiler Capacity: 300MW x 2
Commercial Operation: 2003
Dingzhou Power Plant Unit No.1, 2
Client: Hebei Guohua Dingzhou Electric
Power Corp.
Location: Dingzhou Hebei, China
Fuel: Coal
Boiler Capacity: 600MW x 2
Commercial Operation: 2004, 2005
Recent FGD Experience
Uong Bi Extension Power Plant
Client: Vietnam Electricity (EVN)
Location: Uong Bi, Vientam
Fuel: Coal
Boiler Capacity: 300MW x 1
Commercial Operation: 2006
Saudi / IWSP Project
Client: Rabigh Arabian Water and
Electricity Company
Location: Rabigh, Saudi Arabia
Fuel: Oil
Boiler Capacity: 470t/h x 3 x 3
(330MW equiv. x 3)
Commercial Operation: 2007, 2008
Kawasaki NOx Removal System
Kawasaki offers NOx
removal system based
on Selective Catalytic
Reduction (SCR)
process using ammonia.
Kawasaki SCR consists
of catalyst and ammonia
injection device.
Wide Application of Kawasaki SCR System
Boiler Plant
Waste
Incineration
Plant
Gas Turbine
Power Plant
Diesel
Power Plant
Kawasaki will continue to refine its
technology and supply FGD and SCR Plants
all over the world to keep our earth clean.
Opatvice Power Plant No. 1 - 6 Dingzhou Power Station Hekinan Thermal Power No.4&5
Location: Pardubice, Czech Republic Location: Dingzhou Hebei, China Location: Hekinan Aichi, Japan
Fuel: Lignite Coal Fuel: Bituminous Coal Fuel: Bituminous Coal
Capacity: 330MW Capacity: 600MW Capacity: 1.000MW
Commercial Operation Year: 1997 Commercial Operation Year:2004, 2005 Commercial Operation Year:2001, 2002
Saudi / IWSP Project Unit No.1, 2, 3 Yangzhou Power Plant No. 5 Anan Thermal Power Station No. 3
Location: Saudi / Rabigh Location: Yangzhou Jiangsu, China Location: Anan Tokushima, Japan
Fuel: Heavy Oil Fuel: Bituminous Coal Fuel: Oil
Boiler Capacity: 330MWx3 Capacity: 200 MW Capacity: 450MW
Commercial Operation: Oct. 2008 Commercial Operation Year: 2003 Commercial Operation Year:1998
