No_x Control through reburning

摘要

Reburning I a process whereby a hydrocarbon fuel is injected immediately downstream of the combustion zone to establish a fuel-rich zone in order to convert nitric oxide to HCN. The reburning fuel can be gaseous (e.g., natural gas), solid (e.g., coal char or wood) or liquid (e.g., residual oil). Typically, the amount o reburning fuel used is 10-30/100 of the total fuel. This technology is practiced commercially with nitric oxide reduction levels of 35-65/100, depending on the type and scale of the boiler or combustion, the primary and reburning fuels and other variables.