RU2644610C2 - Gas vortex separator - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: gas vortex separator contains a vertical cylindrical body, an inlet, a vertical outlet and a drainage nozzles, a horizontal partition and a separation device. The outlet nozzle is located at the top of separator. The inlet nozzle is located coaxially with the outlet nozzle at the bottom of separator. The shell is fastened to partition with an outlet at the top and bottom cover, the side wall of the shell under the partition is provided with an inlet, and the drainage nozzle is connected to the opening in the bottom cover. The separating device is located inside the shell and covers the outlet opening, while the swirler is located on the outside of the bottom cover.

EFFECT: providing an additional preliminary stage of gas separation from liquid and solid particles, which leads to improved separation quality.

8 cl, 5 dwg

Description

Technical field

The claimed technical solution relates to the field of separation of dispersed particles from gases using centrifugal forces and can find application in the oil, gas, chemical and other industries.

The prior art.

Known gas vortex type separator (RF patent No. 2304455 for an invention, IPC B01D 45/12 (2006.01), 2007), which contains a vertical cylindrical body, an inlet, a vertical outlet and drain pipe, a deflector, a pickup pocket, a separation bag consisting of vertical flat curved separation plates, which in the lap zone form slotted channels, a false bottom, a pocket-trap located in the upper part of the separation package. The separator further comprises a horizontal baffle located above the separation bag, and cone-shaped guide confusers, located mainly above the horizontal baffle between the separation bag and the outlet pipe and aligned with them. The guide confusers are located one above the other with partial overlap and form annular gaps in the overlap zone. The drainage tube is located in the collecting pocket and hydraulically connects the space behind the confusers above the horizontal partition with the bottom of the separator.

The disadvantage of this analogue is the placement of the inlet and outlet nozzles at an angle to each other, which when embedding the separator in the gap of the pipeline leads to the need to organize strapping of the separator for its adaptation to the pipeline.

Disclosure of the claimed technical solution.

The technical problem to be solved by the claimed technical solution is to reduce the material consumption and the complexity when embedding the separator in the gap of a straight vertical pipeline while maintaining a high degree of gas purification.

The technical result provided by the claimed technical solution is to provide an additional preliminary stage for the separation of gas from liquid and solid particles, which leads to an increase in the quality of separation while ensuring the possibility of direct integration of the separator into the gap of a straight vertical pipeline.

The essence of the claimed technical solution lies in the fact that the gas vortex separator contains a vertical cylindrical body, an inlet, a vertical outlet and a discharge pipe, a horizontal partition and a separation device. The outlet pipe is located at the top of the separator. It differs in that the inlet pipe is located coaxially with the outlet pipe in the lower part of the separator. A shell with an outlet at the top and bottom cover is fixed to the partition. The side wall of the shell under the partition is equipped with an inlet. The drain pipe is connected to the hole in the bottom cover. The separation device is located inside the shell and closes the outlet. A swirl is placed on the outside of the bottom cover.

The above essence is a combination of essential features of the claimed technical solution, ensuring the achievement of all the claimed technical results.

In special cases, it is permissible to carry out the technical solution as follows.

It is advisable to perform the separation device in the form of a separation bag fixed in a horizontal fence and located under it. In this case, the separation package consists of vertical flat curved separation plates, which form slotted channels in the overlap zone. A false bottom is placed under the separation bag. A pocket trap is located at the top of the separation bag. Above the horizontal fence between the separation bag and the outlet there are cone-shaped guide confusers. At the inlet there is a deflector.

The swirler can be made in the form of arcuate blades.

The bottom cover is preferably conical.

In the area under the separation device, the shell and bottom cover form a storage tank. It is permissible to supply the separator with two measuring pipes, one of which is connected to the upper part of the storage tank, and the other to the lower part of this tank or to a drain pipe outside the separator body.

The housing can be made detachable, while the shell is detachably fixed to the partition. The mentioned detachable connection of the housing parts is made in the form of a flange connection, the shell is bolted to the partition, and the drain pipe inside the separator has a detachable connection in the form of a fitting, which is a union nut with a seal.

The authors of the claimed technical solution made a prototype of this solution, the tests of which confirmed the achievement of the technical result.

Brief Description of the Drawings

Figure 1 shows a cross-sectional view of a separator without a level gauge; FIG. 2 and 3 are a cross-sectional view of a separator with options for connecting a level gauge, in FIG. 4 is a cross-sectional view of a separator with a split housing; FIG. 5 is a view of the swirl.

List of reference designations:

1 - drain pipe;

2 - storage capacity;

3 - inlet;

4 - a partition;

5 - output pipe;

6 - outlet;

7 - case;

8 - separation device;

9 - shell;

10 - swirl;

11 - inlet pipe;

12 - shut-off valve;

13 - level gauge;

14 - case flange.

Implementation of a technical solution

The gas vortex separator (Fig. 1) contains a vertical housing (7) with coaxial inlet (11) and output (5) nozzles, as well as a drain pipe (1). The inlet pipe (11) is located at the bottom of the housing (7), and the output pipe (5) is located at the top of the housing (7).

Inside the separator is equipped with a partition (4), to which a shell (9) with a top cover and a bottom cone-shaped cover is fixed at the bottom. The partition (4) is also designed to prevent the direct passage of the incoming gas-liquid mixture to the outlet pipe in the space between the housing (7) and the shell (9). The upper cover of the shell (9) is equipped with an outlet (6) that extends into the cavity above the partition (4). The lower conical cap at its apex is provided with an opening that is connected to the drain pipe (1).

An inlet (3) is made in the upper part of the shell (9) on its side surface under the partition (4). Inside the shell in its upper part there is a separation device (8) that overlaps the outlet (6). The separation device is designed to separate the remaining fine particles from the gas mixture stream. The lower part of the shell (9) together with the lower cover is a storage tank (2).

The cross-sectional area of the space between the inner surface of the vertical housing (7) and the outer surface of the shell (9) is greater than or equal to the area of the inner diameter of the inlet pipe (11) of the separator.

The separation device (8) is preferably made as follows (not shown in the figures), for example, as described in RF patent for the invention No. 2304455. At the inlet (3) there is a deflector installed in the direction of gas-liquid flow at the entrance to the shell (9). A horizontal fence is placed above the inlet, and a separation bag consisting of vertical flat curved separation plates, which form slotted channels in the overlap zone, is fixed to the bottom. A false bottom is attached to the shell under the separation bag. A pocket trap is located at the top of the separation bag. Above the horizontal fence between the separation bag and the outlet there are cone-shaped guide confusers.

The separation device (8) can also be made in the form of small-sized vortex separators according to the patent of the Russian Federation for invention No. 2377049 or according to the patent of the Russian Federation for utility model No. 90701.

A swirler (10) is made on the outer surface of the bottom cover, made in the form of four arcuate blades (Fig. 5). The swirler (10) is designed for swirling in a given direction of the axial flow of the inlet gas-liquid mixture incident on it.

To ensure the possibility of measuring the liquid level in the storage tank (2), the separator is equipped with two measuring nozzles (Fig. 2). One pipe is connected to the upper part of the storage tank (2), and the other to the lower part of this tank. A gauge (13) is connected to the measuring pipes through shut-off valves (12). The level gauge (13) is designed to indicate the liquid level in the storage tank (2). The level gauge (13) is also a liquid level sensor in the storage tank (2) of the liquid discharge control system from the separator. Shut-off valves (12) are designed to overlap the measuring pipes during calibration, repair or replacement of the level gauge (13).

The second measuring pipe may not be hydraulically connected directly to the bottom of the storage tank (2), but to a drain pipe (1) outside the housing (7) (Fig. 3). This achieves a reduction in the number of nozzles with which the casing (7) of the separator is equipped with a level gauge (13).

The housing (7) can be made detachable in the lower part and provided with a housing flange (14) for this purpose (Fig. 4). This provides full bore access to the shell (9) for its revision, cleaning and, most importantly, replacement along with internal structural elements attached to it. The shell (9) is thus detachably fixed to the partition (4), for example, using bolts and seals. In this case, the measuring and drain pipes inside the separator have a detachable connection, for example, in the form of a fitting, which is a union nut with a seal (American connection).

The gas vortex separator operates as follows.

The gas-liquid mixture to be cleaned enters the separator through the inlet pipe (11). Getting on the swirl (10) and hitting the lower conical cover, this mixture changes direction. The flow of a gas-liquid mixture is converted from a straight-line to an upward vortex. The implementation of the lower conical cap, directed downward, sets the direction of the angle of reflection of the incident flow on the cap and reduces noise during operation of the separator. To do this, the taper of the bottom cover should be no more than 90 degrees. The use of a lower cover with less taper leads to an improvement in the formation of a vortex flow and a decrease in the noise of the separator, but leads to an increase in the size of the separator.

In the space between the housing (7) and the shell (9), the vortex flow is separated by the density of particles. The bulk of the liquid is pressed against the inner wall of the housing (7). This is the first stage of separation.

Being limited by a partition (4) in its upward movement, a gas-liquid stream previously divided by particle density is directed to the inlet (3). Sudden changes in the direction of flow and swirls of the flow do not occur in the inlet, thereby reducing the pressure drop across the separator as a whole.

Continuing the vortex movement in the same swirl direction inside the shell (9), the gas-liquid flow continues its separation according to the density of particles contained in it. The liquid is discarded by centrifugal force on the inner wall of the shell (9) and, under the action of inertial and gravitational forces, moves along this wall in a downward spiral in the direction of rotation of the flow into the storage tank (2). As it accumulates in the tank (2), the liquid is discharged from the separator through the drain pipe (1). The conical shape of the bottom cover of the storage tank (2) contributes to the discharge of fluid into the drain pipe (1). The level gauge (13) shows the liquid level in the storage tank. In the presence of an automatic liquid draining system, the signal from the level gauge (13) enters this system, which controls the shut-off valve for draining the liquid from the storage tank (2).

For final cleaning, the gas enters the separation device (8). From the separation device (8), the cleaned gas stream through the outlet (6) and the outlet pipe (5) enters the consumer.

Industrial applicability

The claimed technical solution is implemented using industrially produced devices and materials, can be manufactured at any machine-building enterprise, and will be widely used at oil, gas, and chemical facilities.

Claims (8)

1. A gas vortex separator comprising a vertical cylindrical body, an inlet, a vertical outlet and drain pipe, a horizontal partition and a separation device, the outlet pipe being placed at the top of the separator, characterized in that the inlet pipe is aligned with the outlet pipe in the lower part of the separator, a shell with an outlet at the top and bottom cover is fixed to the partition, the side wall of the shell under the partition is provided with an inlet, and the drain pipe is connected an opening in the bottom cover, wherein the separation device is arranged inside the sleeve and closes the outlet aperture, wherein at the outer side of the bottom cover disposed swirler. 2. The separator according to claim 1, characterized in that the separation device is a separation bag fixed in a horizontal fence and located below it, consisting of vertical flat curved separation plates, which form slotted channels in the lap zone, a false bottom placed under the separation package, a pocket-trap located in the upper part of the separation bag, and cone-shaped guide confusers located above the horizontal fence between the separation bag and the outlet ERSTU, thus at the inlet deflector is placed. 3. The separator according to claim 1, characterized in that the swirler is made in the form of arcuate blades. 4. The separator according to claim 1, characterized in that the bottom cover is conical. 5. The separator according to claim 1, characterized in that in the area under the separation device, the shell and bottom cover form a storage tank, and the separator is additionally equipped with two measuring tubes, one of which is connected to the upper part of the storage tank, and the other to the lower part of this capacities. 6. The separator according to claim 1, characterized in that in the area under the separation device, the shell and bottom cover form a storage tank, and the separator is additionally equipped with two measuring pipes, one of which is connected to the upper part of the storage tank, and the other is connected to the drain pipe outside the separator housing. 7. The separator according to claim 1, characterized in that the housing is detachable, and the shell is detachably fixed to the partition. 8. The separator according to claim 7, characterized in that the detachable connection of the housing parts is made in the form of a flange connection, the shell is bolted to the partition, and the drain pipe inside the separator has a detachable connection in the form of a fitting, which is a union nut with a seal.

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