GAS FLOTATION TANK Russian patent published in 2018 - IPC B01D17/35 C02F1/24 B01D17/28 B03D1/14 

FIELD: oil and gas industry.

SUBSTANCE: flotation tank (10) for removing foreign matter from fluid supplied thereto contains the lower part defining the bottom (50) of the tank (10), a wall (45) defining the sides of the tank; a row of adjacent chambers inside the tank separated from each other by separating walls (65), an oil-collecting chute (15) enclosing each chamber and separated from each chamber by an overflow gate (35). Each chamber has an inclined partition (40) communicating circular movement to fluid in the chamber. The overflow gate (35) is located opposite the inclined partition (40). One of the chambers of the row of adjacent chambers is in fluid communication with branch pipe inlet (20) located near the inclined partition (40) of the row of adjacent chambers. Each chamber is in fluid communication with adjacent chambers through a connecting channel (75) located in the lower part of the separating wall (65) of each chamber and opposite the oil-collecting chute (15). The connecting channel (75) is made for passing the fluid from the chamber to the back side of adjacent camera inclined partition (40). In the separating wall (65), a connecting hole (60) is made between two adjacent chambers. The channel is made in inclined partition (40) at least in one of chambers of the row of adjacent chambers (70) for passing fluid and made for passing flow of fluid between the adjacent chambers through the inclined partition (40) of at least camera. An outlet branch pipe is communicated with one of chambers of the row of adjacent chambers. The connecting hole and the fluid passage channel are provided alternate adjacent chambers.

EFFECT: invention makes it possible to provide device for gas flotation preventing, reducing or limiting bypass of water with elimination or decrease of dependence on the connecting pipe.

15 cl, 13 dwg