Flue gas boiler before pass stack and exhausted to atmosphere should be cleaned and filtered first to reduce and eliminate pollution air. Pollution air is caused by pollutants which can destroy and damage environment. The following below are the cleaning methods to clean and filter flue gas boiler and this equipment are usually located before stack or chimney:
- Muti cyclone system
- Bag house filter system
- Electrostatic precipitator system
- Artificial Rain System (Scrubber)
- Electroventuri system
Each system has advantageous and disadvantageous in term of filtered size of particle, amount of filtered flue gas, price and efficiency. The best cleaned method is chosen based on these parameters.