SU1209249A1 - Method of degassing liquid - Google Patents

Abstract

A method for degassing a liquid, including separating a gas-liquid stream into continuous gas and liquid streams, then separating a dropping liquid from a continuous gas stream and degassing a continuous liquid stream in a separation volume, characterized in that, in order to increase the efficiency of liquid degassing by increasing the residence time of the liquid in the separation volume and repeated renewal of the contact surface of a continuous fluid flow with a continuous gas flow, the movement of a continuous fluid flow under The flat surface of the contact of liquid and gas is carried out along a helical line of current with an axis directed along the flat surface of the contact of liquid and gas. Ci S Ghazi id / omcenapupoBawb / u gas mixture (/) 1C O; o 1C 4ik / 1, ehgazaroya / homo / osp7b

Description

The invention relates to methods for separating dissolved gas from a liquid in gravitational and centrifugal type separators used, in particular, in the separation of gas-liquid flows in the oil, gas, petrochemical and chemical sectors of the industry.

The purpose of the invention is to increase the efficiency of fluid degassing by increasing the residence time of a solid. The fluid flow in the separation volume 4 acquires vrajtelo-progressive movement: rotation occurs around the axis of the screw insert 5 between adjacent threads of its surface, and translational movement occurs along the axis of the screw insert 5 in the direction from the inlet 6 to the outlet 8. The main condition for the occurrence lateral-lateral movement is the difference

liquid flow in the separation volume of liquid levels at adjacent steps of the vinme and repeated renewal of the contact surface of a continuous liquid flow with a continuous gas flow.

The drawing shows the circuit device for implementing the proposed method.

The device includes a tank 1 with a degassed liquid, the volume of which is divided by the contact surface 2 into a separation volume 3 of gas and a separation volume of 4 liquids. In the separation volume of the fluid, the screw box 5 is fixedly mounted (for example, a helicoid).

The configuration and shape of the edges of the screw insert 5 is chosen so as to ensure their tight backlash fit to the walls of the container 1 and partially protrude above the surface of the contact 2. A branch pipe 6 is used to introduce the gas-liquid flow into the container 1, to output the separated gas and degassed liquids - nozzles 7 and 8, respectively.

The proposed method is carried out as follows.

15

h 20

25

thirty

insert 5, since as the flow progresses from nozzle 6 to nozzle 8, the level of liquid decreases. The surface of contact 2 is transformed from continuously flat into stepwise flat.

In the course of the movement of the liquid flow due to the flow around the screw insert 5, the flow to the contact surface 2 is repeatedly lowered and raised to the contact surface 2. As the layers continuously flow from the liquid flow from the axis of the screw insert 5 at different distances, the contact surface is regularly updated 2 on the side of the liquid as the solid flow moves along the axis of the screw insert 5. The increase in the duration of the residence time of the liquid in the separation volume 4 when flowing around the screw insert 5 is directly proportional to It is an increase in the length of the middle helix in comparison with the length of the CE axis, and is inversely proportional to a decrease in the cross section of a continuous fluid flow.

The gas-liquid flow through the nozzle 6 enters the tank 1, where gravitational flow separation occurs into continuous gas and liquid flows, occupied by gas and 3 and liquid separation volumes. The fluid flow in the separation volume 4 acquires vrajtelo-progressive movement: rotation occurs around the axis of the screw insert 5 between adjacent threads of its surface, and translational movement occurs along the axis of the screw insert 5 in the direction from the inlet 6 to the outlet 8. The main condition for the occurrence lateral-lateral movement is the difference

liquid levels on adjacent wine steps

15

20

25

thirty

35

insert 5, since as the flow progresses from nozzle 6 to nozzle 8, the level of liquid decreases. The contact surface 2 is transformed from continuously flat into stepwise flat.

In the course of the movement of the liquid flow due to the flow around the screw insert 5, the flow to the contact surface 2 is repeatedly lowered and raised to the surface of the contact 2. Since the layers of the continuous liquid flow are separated from the axis of the screw insert 5 by different distances, the contact surface 2 is regularly updated. side of the fluid as its continuous flow moves along the axis of the screw insert 5. The increase in the duration of the residence time of the liquid in the separation volume 4 when the screw insert 5 flows past the direct proportion It is an increase in the length of the middle helix in comparison with the length of the CE axis, and is inversely proportional to a decrease in the cross section of a continuous fluid flow.

The degassed liquid leaves the separation volume 4, the outlet from the tank 1 through the pipe 8. The separated gas and the gas from the degassing of the liquid move progressively in the separation volume 3 and exit from the tank 1 through the pipe 7.

Claims (1)

A method for degassing a liquid, including dividing a gas-liquid stream into continuous gas and liquid flows, then separating a dropping liquid from a continuous gas stream and degassing a continuous liquid stream in a separation volume, characterized in that, in order to increase the efficiency of liquid degassing by increasing the liquid residence time in separation volume and repeated updating of the contact surface of a continuous liquid stream with a continuous gas stream, the movement of a continuous liquid stream under a flat the contact surface of the liquid and gas is carried out along a helical stream line with an axis directed along the flat surface of the contact of liquid and gas.