Design and Construction of the Flue Gas Filter, Fan and Condenser for the Solid Fuel Boilers of OÜ Põrguvälja Soojus

Design and Construction of the Flue Gas Filter, Fan and Condenser for the Solid Fuel Boilers of OÜ Põrguvälja Soojus

As part of this project, a flue gas filter, fan, and condenser were designed and installed for the existing solid fuel boiler, along with all necessary reconstruction and modification works. The goal was to increase fuel efficiency, reduce the share of natural gas consumption, and lower the amount of emissions released into the atmosphere with flue gases.

The following works were carried out within the project:

Chimney

The existing chimney was reconstructed, and a new stainless-steel flue liner was manufactured and installed.

Flue Gas Duct

A new flue gas pipeline was designed and built, starting from the woodchip boiler flue outlet and extending to the chimney. The system includes all required equipment for measuring and controlling the operating modes of the flue gas condenser (tee section, gas-tight shut-off valves, flue gas fan, measuring points according to EVS-EN 15259, measurement devices, etc.).

Flue Gas Fan

A new flue gas fan was designed and installed for the 6 MW boiler. The fan capacity is 25,000 m³/h, with the required pressure taking into account the existing resistance of the 6 MW combustion chamber, boiler, and multicyclone (3000–4000 Pa).

Electrostatic Precipitator

A new electrostatic precipitator was designed and installed for a flue gas capacity of 25,000 Nm³/h, considering a solid particle content of 300 mg/Nm³. The filter is also capable of operating with the 1.5 MW boiler at 30% load.

Flue Gas Condenser

The condenser, its auxiliary equipment, and piping were manufactured using stainless steel materials.