RU2531281C1 - Separation unit with in-built gas separator - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: at the separation unit with in-built gas separator there is a device for input of liquid-gas mixture, which is made as a vertical cylinder-shaped hood equipped with a tube with a tangential nozzle for liquid-gas mixture and a pipeline feeding separated gas to the bottom section of the gas separator. The gas separator is in-built to the separation unit with the protruding upper and submerged lower part; it consists of two coaxial pipes, at that the inner pipe is a gas discharge pipe placed at a certain distance from the flat bottom of the gas separator. The separated liquid drain tube is made as hydraulic seal and connected by the liquid drain pipeline to a chamber formed between surfaces of the body and external coaxial pipe, in the upper part of outer coaxial pipe there is a slotted twister, which is fixed coaxially with the body and is made as a bended notch with even bending inwards the pipeline.

EFFECT: improving separation degree of gas-droplet liquid due to simplification of design for the unit and flow energiser.

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Description

The invention relates to the oil and oil industry, in particular to devices for separating gas from liquid, and can be used to provide increased separation ability of the gas separator.

Known separator, which contains a vertical cylindrical body, a horizontal cover, inlet, outlet, drain pipes, a deflector installed in the direction of rotation of the gas-liquid flow, a vertical separation package with a flat bottom, consisting of flat curved separation plates forming slotted channels in the overlap zone and their vertical curved ends directed in different directions with respect to the outer and inner diameters of the separation bag, false bottom. Through holes are made in the center of the flat bottom of the separation bag and the false bottom, in which a hollow cylinder is mounted, the base of which is mounted on the false bottom, and the upper edge of the cylinder is raised relative to the surface of the flat bottom. A cylindrical vertical diffuser with notches is mounted along the outer diameter of the lower surface of the false bottom, and a disk is attached directly under the hollow cylinder [Patent No. 2320395, IPC B01D 45/12, publ. March 27, 2008].

A disadvantage of the known separator is the complexity of the design.

Known fuel gas separator containing a vertical cylindrical body, a horizontal cover, inlet, outlet and drain pipes, a deflector, a vertical cylindrical package of flat curved plates (flow swirl), forming slotted channels placed coaxially with the body and the output pipe located above its upper end with the formation of an annular labyrinth, while inside the cylindrical package of plates installed inverted hollow truncated cone, the base of which is fixed at the level of the upper end a cylindrical package of plates, and on a truncated apex of the cone, a conical false bottom is fixed, forming an annular gap with the inner surface of the separator body, and a conical bottom located at the level of the lower end of the cylindrical package of plates, forming an annular gap with the inner surface of a cylindrical plate, between the conical bottom and radial plate-dampers of a rotating gas flow are located with a false conical bottom; in the lower part of the inverted hollow truncated cone, outwardly openings to which adjoin spiral-helical plates fixed on the outer surface of the cone, directed along the rotation of the gas stream [RF Patent No. 2329088, IPC B01D 45/12, publ. July 20, 2008].

The disadvantage of this device is the complexity of the design of the apparatus and the swirl flow.

Closest to the claimed one is a separator containing a vertical cylindrical body, a horizontal cover, inlet, outlet and drain pipes. The inlet pipe is located in the upper part of the housing. At the outlet of the inlet pipe, a deflector is installed, after which a cylindrical package of plates is fixed coaxially to the separator body — a flow swirl containing flat curved plates forming slotted channels and two arcuate plates between which rectangular gutters and wedge-shaped guide plates are fixed along the entire length for collecting and removal of drip-film liquid components of the gas stream moving in the inner surface of the cylindrical package of plates. An annular labyrinth (pocket-trap) is formed in the upper part of the cylindrical package of flat curved and arcuate plates between its end and the lower end of the wall of the outlet pipe to remove drip-film components of the gas flow moving along the inner surface of the cylindrical package of plates to the outlet pipe [RF Patent No. 2221625, IPC B01D 45/12, publ. January 4, 2003].

The disadvantages of the known separator are the complexity of the design of the apparatus and the swirl flow and, as a result, the low degree of separation of gas-droplet liquid.

The technical result is an increase in the degree of separation of gas-droplet liquid by simplifying the design of the apparatus and the flow swirl. The specified technical result is achieved by the fact that the separation unit with a built-in gas separator containing a vertical cylindrical body, a cover, an inlet pipe with a deflector installed at the output, an outlet and drain pipe and a flow swirl fixed to the body, the gas separator is placed in a horizontally installed separation unit with a protruding the upper and submerged lower parts and consists of two coaxially arranged pipes, the inner of which being the outlet behind, placed at a certain distance from the flat bottom of the gas separator, the drain pipe is made in the form of a water seal and is connected by a liquid drain pipe to the chamber formed between the surfaces of the housing and the outer coaxial pipe, in addition, a flow swirl made in the form of a cut is placed in the upper part of the outer coaxial pipe with a deflection with a uniform bend inside the pipeline, and the branch pipe of the input of the separated gas is connected to the lower part of the gas separator body.

According to the patent and scientific and technical literature, no claimability of the totality of features of the inventive step of the proposal has been found.

The drawing shows a separation unit with an integrated gas separator and a P-P section.

On the separation installation 1 there is a device for introducing a gas-liquid mixture 2, made in the form of a vertical cylindrical cap, equipped with a nozzle 3 with a tangential inlet of a gas-liquid mixture and a pipe 4 leading the separated gas to the bottom of the gas separator 5. The gas separator 5 is built into the separation unit 1 with a protruding upper and submerged lower part and consists of two coaxially arranged pipes 6 and 7, the inner of which, which is the gas outlet pipe, is placed at a certain distance from the flat bottom looking for a gas separator. The drain pipe 8 of the separated liquid is made in the form of a water seal and is connected by a liquid discharge pipe 9 to a chamber I formed between the surfaces of the housing and the outer coaxial pipe. In addition, in the upper part of the outer coaxial pipe 7, a slit-like twisting device, made in the form of a cut 10 with a deflection, with a uniform bend inside the pipeline, is fixed coaxially to the body.

Gas separator works as follows.

A gas-liquid mixture containing dropping liquid enters through a tangentially located nozzle 3 into a device for introducing a gas-liquid mixture 2, in which a preliminary separation of gas and liquid takes place. The separated gas through pipeline 4 enters the bottom of the gas separator 5, where the gas is pre-treated by swirling the flow, then the gas enters the chamber I, formed between the surfaces of the housing and the outer coaxial pipe, where the pre-deposition of the dropping liquid, which in turn flows through liquid discharge pipe 9. The final gas purification in the inner chamber is carried out by a swirling device - cut 10, in which a rotating vortex enters chamber II, formed between coaxial tubes 6 and 7, in which the separated dropping liquid flows under the action of centrifugal forces to the bottom of the gas separator, then through the drain pipe 8 it enters the water seal and then into the separation tank. The purified gas is discharged through the central pipe 6.

The invention finds application in the preparation of gas in the fields.

Claims (1)

Separation unit with a built-in gas separator containing a vertical cylindrical body, nozzles for the gas-liquid mixture inlet, purified gas outlet and a drain pipe, a flow swirl fixed to the body, characterized in that the gas separator is integrated in a horizontally placed separation unit with a protruding upper and immersed lower part and consists of two coaxially arranged pipes, the inner of which being a gas outlet pipe, is placed at a certain distance from the flat bottoms and the gas separator, the discharge pipe is made in the form of a water trap and is connected by a fluid drain pipe to a chamber formed between the surfaces of the housing and the external coaxial pipe; in addition, a slot-like flow swirl is placed in the upper part of the external coaxial pipe, made in the form of a cut with a bend with a uniform bend inward pipeline, and the input pipe of the gas separated from the liquid is connected to the lower part of the gas separator body.

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