Sulfur Trioxide Conditioning

Chemithon flue gas conditioning (FGC) system restores or dramatically improves precipitator performance. These systems generate and inject a precisely controlled amount of sulfur trioxide (SO3) into the flue gas stream. The SO3 reacts to form compounds that condense on the fly ash, lowering its resistivity.
		GEB - Ukai TPS
Chemithon's SO3 generation process operates at a higher concentration, so the process air requirement is less than one-third of other systems. And, unlike conventional systems, the process air doesn't require heating during normal operation. These design features result in significant cost savings.
		KTPS - Unit No.2
Many of the newer systems use much less energy by varying the process air flow with the sulfur rate so that the process air heater is off at most operating rates. Some of the other improvements are:

• Positive displacement process air blowers.
• In tank sulfur pumps.
• Sulfur mass flow elements for accurate feed rate control.
• SO₂ cooler between the burner and converter.
• Two stage converters to achieve over 96% conversion.
• Fully automated PLC control and remote supervisory systems.