Buffer Tank

Buffer tank is a service vessel designed to store liquid hydrocarbons after separation. It is used to verify the accuracy of the oil flow gauge of separator, measure oil output, and further proceed separation from the crude oil which is separated from the separator in oil or gas field with poisonous gas. Meanwhile it can prevent gas gathering to produce H2S.It is not only a second stage separator but also a metering tank, holding a constant backpressure by using its automatic pressure control valve on the gas outlet.The buffer tank usually consists of a single or double compartment vessel and a level measuring system with sight glasses or magnetic levels. To prevent overpressure and overfilling, the buffer tank is fitted with a pressure-relief valve and a high-level and low-level alarm system.The buffer tank is shock-proof by a outer frame, and is operated vertically, but generally transported in a horizontal position.