Amine-rich liquid flash tank

The invention relates to an amine-rich liquid flash tank which comprises a tank body, a heating mechanism is arranged on the tank body, a flash chamber and a separation cavity are arranged in the tank body, an oil storage tank communicated with the separation cavity is arranged below the tank body, an oil removal mechanism located at the liquid level of amine-rich liquid is arranged in the flash chamber, and the oil removal mechanism is located below an amine-rich liquid inlet. The oil removal mechanism comprises an oil absorption ring, an extrusion cylinder and an oil conveying pipe, the oil absorption ring surrounds the rich amine liquid inlet to spray the rich amine liquid entering the flash chamber and limit foam on the inner side of the oil absorption ring, the extrusion cylinder transfers the rich amine liquid and oily heavy hydrocarbon from the oil absorption ring and conveys the rich amine liquid and the oily heavy hydrocarbon into the separation cavity through the oil conveying pipe, floating oil is