Lead smoke treatment device and process

The invention discloses a lead smoke treatment device and process, the lead smoke treatment device comprises a heat exchanger, the heat exchanger is provided with a hot inlet, a hot outlet, a cold inlet and a cold outlet, and the hot inlet of the heat exchanger is connected with a lead smoke waste gas pipeline. The heat exchange heat is used for subsequent cooling tail gas heating; s2, dust removal is conducted through a cyclone dust collector, part of lead smoke dust is collected through a dust collecting box A, and lead recycling is achieved; the heat exchanger is arranged for waste heat recovery for subsequent flue gas drying, energy consumption is reduced while energy is fully utilized, and benefits are improved; in addition, after being recycled, the waste heat is used for drying backflow flue gas of the spray tower, so that the dust removal stability of a subsequent filter drum is improved, and the problem of blockage caused by adhesion of lead-containing dust moisture to the filter drum is avoided; mos