The invention belongs to the technical field of
solid waste treatment, and particularly relates to a removal device and method for mercury in a mercury-containing
pollutant. The removal device for the mercury in the mercury-containing
pollutant consists of a material preparing
system, a pre-heating
drying system, a
thermal desorption system, a residue cooling conveying system and a
flue gas purifying system. The removal method for mercury in the mercury-containing
pollutant comprises the following steps of: pre-treating, pre-heating and
drying, desorbing and mercury-removing, mercury-containing
flue gas purifying. According to the removal device and the removal method, mercury resources further can be recycled while pollutant treatment is realized, so that materials can be sufficiently reacted, and therefore, a
reaction rate is increased; the whole system adopts sealed treatment, so that mercury-containing
flue gas does not leak in a reaction process, and therefore, safety is improved;
energy consumption needed for heating and
drying cold
flue gas is reduced, and
energy consumption needed for cooling high-temperature
flue gas is also reduced, so that production cost is greatly reduced; the production process is guaranteed to be safe and controllable; and process flow is shortened, and
energy consumption is reduced.