Keeps chlorine in balance with SO3
During combustion of biomass, chlorine is released in different forms and in different quantities, depending on the type of biomass.
In combination with alkali metals contained in the fuel, alkaline chlorides are formed and cause heavy corrosion in the plant.
To avoid damage to the superheaters, the chlorine conditioning process of Pentol uses SO3 gas to establish a sulfur- chlorine equilibrium. By balancing the chlorine with the SO3, high temperature corrosion can be stopped completely and corrosive deposits on the superheaters are removed.