F-24

Keywords

Y3

equipment or facility

Z4electricity

E25

general-purpose machinery
Kawasaki Heavy Industries, Ltd.

Waste Heat Recovery Power PlantFeatures
S The power plant which uses a boiler to recover waste
heat gas discharged from various plant into theatmosphere and generates electricity in a steamturbine.
S It can generate electricity without any additional fuel,contributing to energy saving in a factory. Significant
energy saving and reduction of CO2 mission can be
expected in cement plants and steel mills, whereenergy consumptions are extremely high.
S Joint Crediting Mechanism (JCM) can be used,
contributing to GHG emission reductions or removals
in JCM partner countries.

Coke oven waste heat recovery power plant(ArcelorMittal Tubarao in Brazil)

Sinter cooler waste heat recovery power plant(Wuhan Steel in China)

Cement waste heat recovery power plant(Conch Cement in China)

Basic Concept or Summary
Technical outline of cement waste heat recovery power plant is as follows:
S Waste heats are recovered in PH (Preheater) boiler and AQC (air quenching cooler) boiler and power isgenerated in steam turbine. (Heat recovery from only one heat source in either the PH or the AQC is alsopossible.)
S PH boiler recovers waste heat generated in PH. Dust is continuously removed by installing dust removal
equipment because a lot of dust is included in PH gas.
S AQC boiler recovers waste heat generated in AQC.

SteamWater
Gas(AQC)* PH = Preheater, AQC = Air Quenching Cooler

System configuration of cement waste heat recovery power plantEffects or Remarks

F-24

S Cement waste heat recovery power plant in 5,000t/d contributes to the energy saving of about 9,000kW at
generator terminal, equivalent to about 30% of the electricity used in the plant, and about 35,000 t/y of
reduction of CO2 emission. (depends on the conditions.)
S The J-Credit Scheme, etc. in Japan and JCM in JCM partner countries can be applied.
Installation in Practice or ScheduleJapan

S 14 units of cement waste heat recovery power plant were delivered since its first unit wasdelivered to Gifu Plant of Sumitomo Osaka Cement in 1980.
S 5 units of sinter cooler waste heat recovery plant were delivered to JFE Steel and others.

Overseas

S A joint venture company with Conch Group in China was established in 2006, which mainly
engages in design, procurement and construction of cement plant waste heat recovery
power plant. More than 270 units were delivered to Chian, Germany, South Korea, Turkey,etc. together with the J/V.
A new type PH boiler, VEGA® boiler was co-developed by Kawasaki and the J/V and the firstunit was delivered in 2017.
The innovative boiler has a compact design that leads to the reduction of initial investment
cost and brings the improvement of dust removal performance.
S The world’s highest level with a 43,500kW cement
waste heat recovery power plant delivered toDonghae Plant of Ssangyong C&E in South Korea
in 2018. It can cover about 30% of electricity
consumption in the plant, while also contributing tothe 17,000 t/y reduction of CO2 emission.

Cement waste heat recovery power plant(Ssangyong C&E in South Korea)

First VEGA® boiler(Huaibei Cement in China)
VEGA is a registered trademark of Kawasaki Heavy
Industries, Ltd and Anhui Conch Kawasaki
Engineering Co., Ltd. in Japan, U.S.A., EuropeanUnion, China and South Korea.

S Coke oven waste heat recovery powerplant delivered to-ArcelorMittal Tubarao.
in Brazil. The power plant recovers hightemperature waste heat gas of over1000 deg. C and it is the first unit of thewaste heat recovery power plant of its
kind except for United States. The power
output at generator terminal is 196MW(98MW X 2).

Coke oven waste heat recovery power plant(ArcelorMittal Tubarao in Brazil)

Contact:

Kawasaki Heavy Industries, Ltd., Energy Solution & Marine Engineering Company
Power Plant Sales Department
Phone: +81-3-3435-6642
URL: https://khi.co.jp/energy_plants/