SOx (Sulfur Oxides)

According to the flue gas treatment, required mitigation rate (> 95%) and the size of the plant SOLVAir® bicarbonate process can be used to mitigate SO2 and SO3.




Process: reactions 

1. Thermal activation of sodium bicarbonate 

                      T > 140°C 

2NaHCO3 ---------------------------> Na2CO3 + CO2 + H2O


2. Acid neutralization 

ALCALI + ACID GAS ------------------> SALT 

NaHCO3 + HCl -------------------------> NaCl + CO2 + H2

In utility boilers, industrial boilers cement kilns other fuel combustors and in some industrial processes, sulfur in fuel or in the raw material is converted into sulfur oxides (SO2, SO3) during combustion. Typically, over 98% of sulfur oxides in the boiler flue gas is SO2, with the remainder being SO3, SOand SOcontribute to acid rain. 

The SOLVAir® Solution: dry sorbent injection of sodium bicarbonate for flue gas cleaning

For smaller boilers in the utility sector, it is too expensive to treat SO2 with wet scrubbers which typically use lime or limestone. For these industries, Dry Sorbent Injection is often the most economical choice. Ground Bicar® is injected dry, dispersed throughout the duct and allows mitigating SOx to a very low level (over 99% reduction has been measured) in order to respect even the most severe regulations. 

SOLVAir® Solutions sodium bicarbonate BICAR® is a safe, non-corrosive solution for air emission control. 

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