Hazardous waste incineration flue gas quenching heat exchange system

The invention discloses a hazardous waste incineration flue gas quenching heat exchange system, which is characterized in that a membrane wall waste heat boiler is provided with a high-temperature flue gas inlet, a heat exchange flue gas outlet, a boiler water inlet and a steam exhaust port; the heat exchange flue gas outlet is connected with an intensive convection bank quenching box; the intensive convection bank quenching box is provided with a flue gas inlet, a cooling flue gas outlet, a boiler water inlet and a steam outlet; a quenching spraying device is arranged in the intensive convection bank quenching box; and the boiler water inlet of the membrane wall waste heat boiler, the boiler water inlet of the intensive convection bank quenching box and a water inlet of the quenching spraying device are all connected with a softened water tank through pipelines provided with water feeding pumps. According to the flue gas quenching heat exchange system, the flue gas can be rapidly cooled, the synthesis temper