Desulfurization Methods of Coal Fired Industrial Boiler

Nowadays, coal remains main fuel for industrial boiler. Without
desulfurization, These sulfur dioxide will cause serious
environmental pollution. Desulfurization has been necessary part to
protect the environment. Main desulfurization methods of coal fired industrial boiler are as following

Desulfurization before coal combustion

The common way of that is coal washing,using the physical treatment to eliminate the sulfur in coal.

Desulfurization in the furnace of coal fired industrial boiler

The common way is adding sulfur fixing agent in the coal,the sulfur
dioxide produced in the combustion,reacts with the sulfur fixing
agent,forming the solid compounds,then,they are discharged with the
slag.According to information,this is by far the most economic,
practical, widely used method.

Flue gas desulfurization of coal fired industrial boiler

After coal combustion,although two desulfurization programs have been
processed,we still can not reach the complete desulfurization,the flue
gas also contains sulfur dioxide,the flue gas desulfurization is mainly
the recycle of sulfur,the method is that adding absorbents in the
cyclone dust removal desulfurization tower, they react with flue
gas,forming sulfate,the sulfate is discharged into the dust
pool,reaching the effect of desulfurization.