Method and equipment for oily sludge pyrolysis desorption

The invention belongs to the technical field of pyrolysis desorption, and specifically relates to a method and equipment for oily sludge pyrolysis desorption. The method for oily sludge pyrolysis desorption comprises the following steps: allowing heating flue gas to be provided as a heat source for a pyrolysis desorption furnace, then allowing oil-containing desorption gas to be led out from the pyrolysis desorption furnace and then enter a desorption gas pipeline, allowing heated flue gas to be led out from the pyrolysis desorption furnace to become flue gas tail gas to enter a tail gas pipeline, allowing the tail gas pipeline to communicate with a spray tower, controlling a gas inlet temperature to be 850 DEG C or above when the heated flue gas enters the pyrolysis desorption furnace, controlling a gas outlet temperature to be 600 DEG C or above when the flue gas tail gas is led out of the pyrolysis desorption furnace, heating the desorption gas pipeline through the flue gas tail gas, and carrying out spray