Device and method for promoting fine lead dust agglomeration and mercury oxidation in smoke

The invention relates to a device and method for promoting fine lead dust agglomeration and mercury oxidation in smoke. The device is arranged in a flue or a special shell, the device is formed by stacking of 1-5 coagulation groups, and each coagulation group consists of two rows of electrodes and Venturi rods, wherein the electrodes and the Venturi rods are arranged in a staggered manner; and themethod comprises the following steps: when the smoke passes through positive electrodes, a part of fine particle matter is positively charged, and when the smoke passes through negative electrodes, apart of the fine particle matter are negatively charged, and fine particle matter with positive charges and fine particle matter with negative charges are collided and agglomerated under the action of charge attraction of opposites; in addition, the smoke flows downstream through gaps among the Venturi rods, under the effects of turbulent flows of the Venturi rods and back corona, the mixing degree of an air flow and the