RU2510736C1 - Gas separator - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and may find application in manufacturing of gas separator. Gas separator includes a housing, input tube for unpurified gas, output tube for purified gas, union for pumping of liquid separated from gas and separating elements. Separating elements are made as a labyrinth of gates of different height with lower open areas and placement of long gates below water level in the separator, and each short gate is placed close to the nearest long gate in direction of gas flow. At gate labyrinth output there is an inertial drop catcher made in the form of plates place at variable angles towards gas flow. The separator is equipped additionally with a section isolated from total volume of the separator by hydraulic lock and metal vertical net. The output tube for purified gas is placed in housing of the isolated section. while the input tube for unpurified gas is connected to the gate labyrinth.

EFFECT: increasing treatment degree of associated gas from liquid.

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Description

The invention relates to the oil industry and may find application in creating a gas separator.

A gas separator is known in which an annular gas flow diffuser is mounted on the outer surface of the reflector, and a pipe is inserted in the reflector’s inner hole, with one end entering into the outlet pipe with an annular gap and the other end into the confuser hole, the vertical plates of the separation element are bent under a blunt angle, inside the normally incoming pipe, two guide vertical curved plates are installed, the proportions of the main structural elements of the separator are determined (Patent P F No. 2136350, publ. 09/10/1999).

The closest to the proposed invention by technical essence is a separator for drying gas, which includes a casing, a raw gas inlet pipe, a purified gas outlet pipe, a drainage nozzle for draining the liquid extracted from the gas, moisture collectors, a chipper and separation elements. A central perforated pipe with a plug at the lower end is fixed in the housing. The separation elements, which are a spiral-coiled mesh, and moisture collectors form separation units fixed at a uniform pitch along the height of the perforated pipe (RF Patent No. 2446001, published on 03/27/2012 - prototype).

A common disadvantage of the known technical solutions is the insufficiently high gas purification from the liquid contained in it, in particular oil associated gas from oil and water.

The proposed invention solves the problem of increasing the degree of purification of associated petroleum gas from liquid.

The problem is solved in that in a gas separator including a housing, a raw gas inlet pipe, a purified gas outlet pipe, a nozzle for pumping liquid extracted from the gas and separation elements, according to the invention, the separation elements are made in the form of a maze of shutters of different heights with lower open zones and with by placing long shutters below the liquid level in the separator, with each short shutter being placed close to the nearest long shutter along the gas, while at the exit from the labyrinth of shutters there is no A droplet eliminator in the form of plates arranged at varying angles to the direction of gas flow, the separator is additionally equipped with a section isolated from the total volume of the separator by a water trap and a metal vertical mesh, the purified gas outlet pipe is located in the housing in the insulated section, and the raw gas inlet pipe is connected to the labyrinth dampers.

SUMMARY OF THE INVENTION

Associated petroleum gas carries with it a large amount of oil and water, which causes difficulties for its disposal, for example, on a flare. Existing technical solutions solve the issue of purification of associated petroleum gas only partially. The proposed invention solves the problem of increasing the completeness of purification of associated petroleum gas from oil and water. The problem is solved by the gas separator shown in figure 1.

In Fig. 1, the gas separator includes a housing 1, a raw gas inlet pipe 2, a purified gas outlet pipe 3, a fitting for pumping liquid 4 extracted from the gas, a labyrinth 5 of long 6 and short 7 shutters with lower open zones 8 and with placement of 6 long shutters below the liquid level 9 in the housing 1. Each short shutter 7 is placed near the nearest long 6 shutter along the gas. At the exit from the labyrinth of shutters 5, an inertial droplet eliminator 10 is arranged in the form of plates 11 located at variable angles α to the direction of gas flow. The casing 1 has a section 12 isolated from the total volume of the casing 1 with a water trap 13 and a vertical metal net 14. The outlet for the purified gas 3 is located in the housing 1 in the insulated section 12, and the inlet of the raw gas 2 is connected to the labyrinth 5 of the shutters.

The gas separator operates as follows.

Crude associated petroleum gas enters through the inlet pipe of the raw gas 2 into the labyrinth 5 of the shutters and passes between them, each time in contact with the liquid at the bottom of the housing 1, which is facilitated by the long 6 shutters. The location of the shutters 6 and 7 in a vertical plane and the rotation of the gas flow when flowing around the short shutter 7 causes the gas flow to discharge liquids to the bottom of the housing 1. The location of the short shutters 7 close to the nearest long 6 shutters along the gas helps to increase the gas flow rate and enhance the effect of the dropping liquid from gas. In the labyrinth of 5 shutters, gas loses the bulk of the large, heavy fluid particles.

At the exit from the labyrinth of shutters 5, the gas flow enters an inertial droplet eliminator 10, in which the gas flow strikes the plates 11 and, due to the variable angles of arrangement of the plates to the direction of the gas flow, loses the main fraction of medium-sized liquid particles on these plates 11.

Next, the gas through the vertical metal grid 14 enters section 12. Section 12 is isolated from the total volume of the housing 1 by a water trap 13 and vertical metal grid 14. Gas passes through the metal grid 14 and leaves the smallest particles of liquid on it. From section 12, gas is taken through the outlet pipe of the purified gas 3. The fog deposited in section 12 from the smallest particles of liquid settles to the bottom of section 12 and is drained through a water trap 13 to the bottom of the housing 1.

Such multi-stage gas purification allows you to completely clean the gas from liquid impurities.

The use of the proposed gas separator will allow to increase the degree of purification of associated petroleum gas from liquid.

Claims (1)

A gas separator comprising a housing, a raw gas inlet pipe, a purified gas outlet pipe, a nozzle for pumping liquid extracted from the gas, and separation elements, characterized in that the separation elements are made in the form of a labyrinth of shutters of different heights with lower open zones and with the placement of long shutters below the liquid level in the separator, with the placement of each short shutter close to the nearest long shutter along the gas flow, while an inertial droplet eliminator is located in the outlet of the labyrinth of shutters the idea of plates located at varying angles to the direction of the gas flow, the separator is additionally equipped with a section isolated from the total volume of the separator by a water trap and a metal vertical grid, the purified gas outlet pipe is located in the housing in the insulated section, and the raw gas inlet pipe is connected to the labyrinth of shutters.