AIR PREHEATERS
Regenerative Air Preheaters are mainly used in fossil fuel steam power plants to improve boiler efficiency. Therefore, the combustion air is heated up by the thermal energy of the flue gas, thus enhancing the combustion process. Balcke-Dürr is in a position to offer Regenerative Air Preheaters with rotating Ljungström-type as well as stationary Rothemühle-type heat storage medium. In the air preheater, the flue gas and the combustion air are led in counterflow through a matrix of heating elements. These heating elements continuously absorb and release heat by convection.
WHY YOU SHOULD MODERNIZE AN AIR PREHEATER
- Less fan power consumption and less fuel costs due to site-specific optimum in terms of leakage, heat transfer and pressure drop
- Less wear of seals thanks to high efficiency adjustable non-contact sealing system while at the same time reducing leakage mass flow rates
- Higher efficiency of downstream installations, e.g., filters and FGD units, through reduced flue gas flow after the air preheater
AIR PREHEATER SERVICES
Balcke-Dürr provides all services for its own products and those of other companies. Verifiable improvements in performance can be demonstrated in a multitude of references from the power plant and steel industries.
- Complete overhauls
- Leakage minimization with innovative sealing systems
- Upgrading and revamping
- Inspections, condition and damage analyses as well as modification and overhaul planning
- Supply, disassembly and installation of spare parts, wear parts and auxiliary units:
- Heating elements
- Bearings
- Electric and pneumatic drive units
- Sealing system
- Pin rack
- Sootblowers, washing equipment incl. piping
- Fire alarm equipment
- Rotation-monitoring system
- Checking and setting of the pneumatic system, instrumentation and control equipment
GAS-GAS-HEATERS
Regenerative Gas-Gas Heaters are mainly used in flue gas desulfurization plants and low dust SCR systems to utilize the waste heat of the flue gas. Balcke-Dürr is in a position to offer Gas-Gas Heaters with rotating Ljungström-type or stationary Rothemühle-type heat storage medium.
Inside the gas-Gas Heater, raw gas and clean gas are led in counterflow through a matrix of heating elements. These heating elements continuously absorb and release heat by convection.
- Double Sealing System ensures no bypass leakage
- Scavenging system ensures for leakages < 0.5
- Enameled heating elements designed for low pressure drop and high efficiency prevent corrosion
- Highly efficient cleaning system using swivel arm sootblowers
- Circumferential drive guarantees safe operation
LUGAT® COMPACT HEAT EXCHANGERS
Significant energy savings can be achieved by using LUGAT Compact Heat Exchangers to preheat the combustion airs for steam boilers with capacities of 3 to 350 t/h and industrial furnaces. The LUGAT Compact Heat Exchanger is a Ljungström Type Air Preheater that can be delivered in vertical or horizontal design.
LUGAT Compact Heat Exchangers with diameters of up to 5.6 m are shipped completely assembled and tested. Thus long plant outages due to long on-site assembly times are avoided. Furthermore, the LUGAT Compact Heat Exchanger provides an outstanding availability.
- Lugat Compact Heat Exchangers since 1974
- Installed base: more than 80 Lugat air heaters world wide
- Standardized design for rotor diameters from 2.0 m up to 6.4 m
Advertisement
The 10 largest coal producers and exporters in Indonesia:
