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® SCHNEIDER-KESSEL BERLIN
WASTE HEAT RECOVERY BOILER - Series AHK
STEAM BOILER and HOT WATER BOILER
G E N E R A L
Waste Heat Recovery boilers of Series AHK are steam generators in special smoke tube design to utilize hot waste gas
from industrial processes generating high or low pressure saturated steam or hot water.
They are principally of customized design to meet the requirements of every application in order to achieve the utmost
possible result of heat recovery.
Most of the time boilers of series AHK are installed down stream of diesel or gas engines as well as gas turbines to
utilize the hot waste gases. Even in combination with cogeneration units valuable resources can be saved.
The AHK is connected to the waste gas sources by flue gas ducts. In order to achieve a comprehensive controllability
a bypass system is installed to bypass the AHK directly into the chimney.
Economiser can be installed to maximize the heat recovery.
B E N E F I T S
reducing fuel consumption and decreasing operation costs by substituting
conventional boiler systems
raising the plant efficiency
cost-efficient design, hence fast return of investment (ROI)
customized design for each application
easy integration in each existing boiler system
safe and space-saving installation
72 hrs operation without supervision by most advanced safety
and control equipment
D E S I G N
Waste Heat Recovery boilers of Series AHK are shell boilers in one pass smoke tube design.
Flue gas boxes at boiler inlet are channelling the hot flue gases into the smoke tubes. At the boiler outlet one common
flue gas box collects the flue gas and leads it via a flue gas duct to the chimney.
In the one pass smoke tube design the smoke tubes of the AHK are welded into both boiler end plates hence avoiding
cost intensive internal flue gas reversing installations.
The AHK can be designed for horizontal or vertical flue gas inlet and outlet depending on the local situation.
In case of expecting interacting impact of the different flue gas sections in the AHK - i.e. different flue gas pressure
levels – the flue gas sections can be totally separated from each other. This goes with the entire AHK including the
economiser.
The generous water and steam space of the AHK guarantees a perfect dry steam with no carry over and a short reac-
tion time during load fluctuation.
M A N U FA C T U R I N G A N D E Q U I P M E N T
Boilers of series AHK are designed in accordance with the applicable design standards and rules, TRD or EN12953, in
combination with Pressure Vessel Directive DGRL97/23/EG. Manufacturing is carried out under supervision of TÜV.
B A S E S F O R D E S I G N A N D E Q U I P M E N T O F A H K B O I L E R S A R E
flue gas mass flow of each connected waste gas source
allowable pressure loss of each connected waste gas source
flue gas composition of each waste gas source
required safety standard
required control standard
B A S I C D E S I G N A N D E Q U I P M E N T
pressure part including insulation
flue gas boxes in accordance with the local situation and/or upon
clients request
control box
pressure control
bypass control system
boiler safety chain including emergency push button
main power connection
1 safety valve
1 min. water level limiter switch
1 water level control switch for continuous water level control
1 pressure transmitter for pressure control
1 max. pressure switch
1 water level gauge
1 intermittent blow down valve manually activated
1 surface blow down valve manually activated
1 main steam valve
1 feed water valve
1 feed water check valve
1 vent valve
2 feed water pump sets - 1 in operation - 1 as stand-by unit
O P T I O N A L E Q U I P M E N T
1 additional water level limiter switch in case of 72 hrs operation
1 TDS control in case of 72 hrs operation without supervision
1 control device for automatic intermittent blow down valve in case
of 72 hrs operation without su-pervision
3-way bypass damper for each flue gas flow
economiser
1 temperature gauge for visual temperature monitoring
T E C H N I C A L D ATA
We deliver waste heat recovery boilers of series AHK for capacities up to 10 MW. Higher capacities upon request.
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sources of energy
engines
turbines
kilns
steam boilers
...
bypass system
SCHNEIDER-KESSEL AHK
heat exchanger
economiser
preheater for water treatment plants
preheater for utility water
...
chimney
We del iver worldwide
www.schneider-kessel.com
04/2013
SCHNEIDER Engineering GmbH Berlin, Germany Tel.: +49 (0)30 75 44 93 99 - 0Fax: +49 (0)30 75 44 93 99 - [email protected]
SCHNEIDER-KESSEL (ASIA) LtD.Bangkok, ThailandTel.: +66 (0)2 3660 - 573Fax: +66 (0)2 3660 - [email protected]
Range of Deliveries and Services
Steam and Hot Waters Generators
water tube boilers
three pass boilers
waste heat recovery boilers
electrically heated steam and hot water generators
Engineering
Installation and Commissioning
After Sales Service
Repair
Spare Parts
