Abstract: The flue gas mercury removal technologies of America, which can be used in industrialization scale, include two technologies, one of them is activate carbon injection technology based on precipitator, and the other is the catalytic oxidation technology based on flue gas desulphurization equipment. The technological superiority of the computation fluid dynamics was analyzed. A design example was introduced, in which the computation fluid dynamics method was used in flow field simulation for guiding the design of the gas duct, the reactor and the injection system. The example provides some references for future mercury removal projects in our country.

Key words: flue gas, mercury removal, computational fluid dynamics, activated carbon injection, catalytic oxidation