KR20240053181A - Gas-liquid separating apparatus - Google Patents

Abstract

The present invention relates to a gas-liquid separation device that can efficiently remove liquid contained in a gas to be treated by appropriately distributing fluid momentum inside a gas supply unit.

Description

Gas-liquid separation device {GAS-LIQUID SEPARATING APPARATUS}

The present invention relates to a gas-liquid separation device that can efficiently remove liquid contained in a gas to be treated.

Generally, a gas-liquid separation device is a device that separates and removes liquid contained in a gas. Specifically, the gas-liquid separation device is provided with a housing having an accommodating space therein, and a gas supply unit is provided on one side of the housing to supply the gas to be treated into the accommodating space and to separate the liquid contained in the gas to be treated. The gas supply unit is formed as a hollow tube having an inlet on one side through which the gas to be treated is introduced, and an outlet on the other side.

When the gas supply unit of this structure supplies the gas to be treated into the housing through the inlet, the flow rate slows down as the contact area of the gas to be treated passing through the interior increases. Then, when the gas to be treated passes through the outlet of the gas supply unit, the liquid (droplets) contained in the gas to be treated is initially separated and stored in the liquid storage space provided at the inner lower side of the housing through the outlet. The gas to be treated, from which the liquid is first separated, passes through a demister provided on the upper inside of the housing, and the remaining amount of liquid contained in the gas to be treated can be removed secondarily. The gas to be treated from which the liquid has been removed is discharged to the outside through the gas outlet.

However, in the gas-liquid separation device structured as above, speed deviation may occur when the maximum axial velocity (Max Axial Velocity) is greater than the designed maximum gas velocity (Max Gas Velocity) at a specific location within the gas supply unit. In this case, the liquid contained in the supplied gas to be treated may not be separated smoothly, and as the fluid momentum is concentrated at the outlet of the gas supply unit to a specific position, a splash phenomenon occurs that hits the liquid separately stored in the lower inside of the housing. It can happen. Due to this flow phenomenon, the liquid may scatter and be discharged through the gas outlet at the top.

In particular, in order for the liquid to be effectively separated in the demister, the maximum axial speed must be lower than the design maximum gas speed. Otherwise, due to the high speed of the gas, the liquid collected in the demister may be carried out with the gas to the gas outlet. There are concerns that may arise.

Republic of Korea Patent Publication No. 10-2013-0105280 (Publication date: 2013.09.25)

The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a gas-liquid separation device that can efficiently remove liquid contained in the gas to be treated by appropriately distributing the fluid momentum inside the gas supply unit.

The present invention for realizing the above-described object is a gas-liquid separation device for separating liquid contained in a gas to be treated, wherein a receiving space is provided inside, a gas outlet is provided at the top, and a liquid outlet is provided at the bottom. housing; And a gas supply unit installed on one side of the housing in a horizontal direction intersecting the vertical center axis of the housing to supply the gas to be treated into the receiving space, wherein the gas supply unit is configured to supply the gas to be treated into the receiving space. A hollow gas supply pipe having an inlet and a long hole-shaped outlet along the longitudinal direction at the lower part of the other side; and a baffle member installed in the gas supply pipe to block at least the lower side of the internal movement passage.

In this case, the baffle member is disposed on the long hole-shaped outlet, and may include dividing the outlet into at least two flow paths along the longitudinal direction of the moving passage to distribute the fluid momentum of the supplied gas to be treated. You can.

Additionally, the baffle member may include one formed in the shape of a semi-disc with a flat top.

Additionally, the height of the top of the baffle member may be equal to the central axis of the gas supply pipe or may be formed to be higher than the central axis of the gas supply pipe.

Additionally, the baffle member may include one disposed between the vertical center axis of the housing and the inlet of the gas supply pipe.

Additionally, the baffle member may be inclined at an angle of 0 to 15° toward the inlet of the gas supply pipe based on the vertical center axis of the housing.

The gas-liquid separation device according to the present invention configured as described above can prevent splash phenomenon by appropriately distributing fluid momentum by applying a baffle member inside the gas supply unit when treating gas that is a mixture of gas and liquid. Accordingly, the liquid contained in the gas to be treated can be efficiently removed.

1 is a perspective view of a gas-liquid separation device according to the present invention;
Figure 2 is a side cross-sectional view of the gas-liquid separation device according to the present invention;
Figure 3 is a perspective view showing a state in which a baffle member is installed in a gas supply pipe according to the present invention;
Figure 4 is a side cross-sectional view showing another embodiment of the baffle member according to the present invention;
Figure 5 is simulation data showing the maximum axial speed of the gas to be treated according to the inclination angle and the presence or absence of a baffle member installed in the gas supply pipe of Figure 4;
Figure 6 is simulation data showing the maximum axial speed of the gas to be treated in the cross section along line I-I' of Figure 4;
Figure 7 shows the results of an experiment measuring the maximum axial speed and the amount of liquid discharged through the gas outlet of the gas-liquid separation device to which various embodiments and comparative examples according to the present invention were applied.

Hereinafter, the configuration and operation of specific embodiments of the present invention will be described in detail with reference to the attached drawings.

Here, in adding reference numerals to components in each drawing, it should be noted that identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings.

Figure 1 is a perspective view of a gas-liquid separation device according to the present invention, and Figure 2 is a side cross-sectional view of the gas-liquid separation device according to the present invention.

Referring to FIG. 1, the present invention enables smooth separation of liquid contained in a gas to be treated, and the gas-liquid separation device 1 according to a preferred embodiment of the present invention includes a housing 100 and a gas. It may include a supply unit 200.

A detailed description of the configuration of the present invention is as follows.

Referring to FIG. 2, the housing 100 forms the main body of the gas-liquid separation device 1 and may be formed in a cylindrical shape with a receiving space S provided therein.

In this case, a gas outlet 101 may be provided at the upper part of the housing 100, and a liquid outlet 103 may be provided at the lower part to selectively discharge the liquid separately stored in the receiving space (S).

The gas supply unit 200 is installed on one side of the housing 100 in the horizontal direction crossing the vertical center axis (C) of the housing 100. This gas supply unit 200 is located in the receiving space of the housing 100 ( In addition to supplying the gas to be treated within S), the liquid contained in the gas to be treated can be separated.

Referring to FIG. 3, the gas supply unit 200 is a hollow tube gas provided with an inlet 211 through which the gas to be treated is introduced on one side and an outlet 213 in the form of a long hole along the longitudinal direction at the lower side of the other side. A supply pipe 210 may be provided. Additionally, a baffle member 220 may be installed inside the gas supply pipe 210 to block at least the lower side of the internal movement passage (L).

Referring again to FIG. 2, one end of the gas supply pipe 210 is open to form an inlet 211, and the other end of the gas supply pipe 210 is closed. In this case, the long hole-shaped outlet 213 is formed on the lower outer peripheral surface of the other side of the gas supply pipe 210, and the gas to be treated supplied into the gas supply pipe 210 through the inlet 211 is moved through the passage (L). After moving along, it can be discharged in a downwardly inclined direction through the outlet 213.

In the gas supply unit 200 of this structure, the liquid contained in the gas to be treated passing through the outlet 213 can be separately stored in the lower interior of the housing 100. In addition, the liquid-separated gas to be treated may rise toward the gas outlet 101 on the upper side of the housing 100, pass through the demister 300, and then be discharged to the outside through the gas outlet 101.

In this case, the baffle member 220 is disposed on the long hole-shaped outlet 213, and this baffle member 220 can divide the outlet 213 into at least two parts along the longitudinal direction of the movement passage (L). there is. That is, by dividing the long hole-shaped outlet 213 into two through the baffle member 220, two flow paths L1 and L2 can be formed along the longitudinal direction with the baffle member 220 in between.

The top of the baffle member 220 may be formed in a flat semi-disc shape. In addition, the height of the top of the baffle member 220 may be equal to the central axis of the gas supply pipe 210, or may be formed to be higher than the central axis of the gas supply pipe 210. If the height of the top of the baffle member 220 is formed lower than the central axis of the gas supply pipe 210, it may be difficult to lower the speed of the gas to be treated passing through the movement passage (L).

The baffle member 220 sequentially passes the gas to be treated supplied through the inlet of the gas supply pipe 210 through the outlet 213 divided into two flow paths L1 and L2 using the baffle member 220. can be discharged.

The baffle member 220 having the structure described above can disperse the fluid momentum of the gas to be treated moving through the passage (L) of the gas supply pipe 210 and efficiently separate the liquid contained in the gas to be treated. You can. In addition, it is possible to prevent a splash phenomenon hitting the liquid stored in the lower inside of the housing 100.

Additionally, the structure of the baffle member 220 can reduce the maximum axial velocity (Max Axial Velocity) to be no greater than the designed maximum gas velocity (Max Gas Velocity). For example, by installing the baffle member 220 in the gas supply pipe 210, the maximum axial velocity can be reduced by 38% compared to the existing gas supply pipe. Accordingly, it is possible to prevent the carry-over phenomenon in which the liquid is swept away by the airflow of the gas discharged through the gas outlet 101 and discharged together.

In addition, the baffle member 220 is preferably disposed within the range A (see FIG. 2) between the vertical center axis C of the housing 100 and the inlet 211 of the gas supply pipe. That is, when the baffle member 220 is disposed at a position beyond the range A inside the housing 100, the gas to be treated discharged at a downward angle through the outlet 213 of the gas supply pipe 210 is transferred to the housing 100. ), the liquid separation efficiency may decrease as it is discharged biased toward the inner wall of the liquid.

For example, the outlet 213 may be formed in a trapezoidal shape with the width of the hole gradually narrowing from the inlet 211 of the gas supply pipe 210 to the outlet 213 when the gas supply pipe 210 is viewed in a plan view. (See Figure 3). In this way, the outlet 213 is formed in a trapezoidal shape and the hole width gradually narrows, so that even if the supplied gas to be treated sequentially passes through the two flow paths (L1 and L2), the gas to be treated reaches the other side of the gas supply pipe 210. It is possible to maintain a uniform flow rate without reducing the flow rate of the gas.

Referring to FIG. 4, the baffle member 220 is installed to be inclined at an angle θ of 0 to 15° toward the inlet 211 of the gas supply pipe 210 with respect to the vertical center axis of the housing 100. You can. That is, when the installation angle θ of the baffle member 220 is inclined by more than 15° or the baffle member 220 is tilted at a predetermined angle to the side opposite to the inlet 211, the maximum axial velocity of the gas to be processed (Max Axial Velocity) can be greater than the Max Gas Velocity. In this case, a splash phenomenon may occur as the gas discharged through the outlet 213 hits the liquid stored in the lower portion of the housing 100. Therefore, it is desirable to maintain the inclination angle θ of the baffle member 220 in a predetermined range (0 to 15°), so that the fluid momentum at the outlet 213 can be appropriately distributed.

< Experiment example >

In order to check the efficiency of removing liquid contained in the gas to be treated during the treatment process using a gas-liquid separation device, the gas to be treated according to whether or not the baffle member 220 is installed in the gas supply pipe 210 and the inclination angle of the baffle member 220. An experiment was conducted to measure the maximum axial velocity of each.

Referring to Figures 5 and 6, in Examples 1 to 4 according to the present invention, the installation angle θ of the baffle member 220 installed in the gas supply pipe 210 is 0°, 5°, 10°, and 15°, respectively. This is the case. And Comparative Example 1 is a case where a separate baffle member 220 is not installed in the gas supply pipe 210, and Comparative Examples 2 to 5 are -20°, -10°, 20°, and 25°, respectively (Figure 7).

For reference, the standard value of the designed maximum gas velocity is 2m/s (+10%), and if the maximum axial velocity of the gas to be processed measured at a specific location is faster than the above standard value, the fluid momentum If this is not uniform, liquid removal efficiency may be reduced.

As a result of the experiment, as shown in FIG. 7, when the installation angle θ of the baffle member 220 in the gas supply pipe 210 is installed at an angle of 0 to 15° toward the inlet 211, the maximum axial speed is close to the standard value. It was measured, and in this case, the amount of liquid discharged through the gas outlet 101 in the installation angle range (0° to 15°) was calculated to be 0. In particular, the maximum axial speed was measured to be the best when the baffle member 220 was installed at an angle of 5° toward the inlet 211.

On the other hand, in the case of Comparative Example 1 in which the baffle member 220 was not installed, the maximum axis speed was measured as the fastest at 3.25 m/s. In this case, as the fluid momentum at the outlet of the gas supply pipe 210 is concentrated to a specific position, a splash phenomenon may occur that hits the liquid stored in the lower part of the housing 100, which causes discharge through the gas outlet 101. The amount of liquid was calculated to be 108 kg/hr.

In addition, in the case of Comparative Example 5, the amount of liquid discharged through the gas outlet 101 was calculated as 0, but the maximum axial speed of Comparative Example 5 was measured at 2.44 m/s, which is faster than the standard value, indicating that it is in an unstable state.

As can be seen from the above experiment, the fluid momentum can be most appropriately distributed when the installation angle θ of the baffle member 220 according to the present invention is installed at an angle of 0 to 15° toward the inlet 211. Accordingly, the liquid contained in the gas to be treated can be efficiently removed.

The gas-liquid separation device 1 according to the present invention as described above installs a baffle member 220 in the gas supply pipe 210 that supplies the gas to be treated within the housing 100 to appropriately control the fluid momentum at the outlet 213. It can be distributed, and thus the liquid contained in the gas to be treated can be efficiently separated and removed.

In the above, the present invention has been shown and described with reference to specific specific embodiments, but the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the technical spirit of the present invention.

1: Gas-liquid separation device 100: Housing
101: gas outlet 103: liquid outlet
200: gas supply unit 210: gas supply pipe
211: Entrance 213: Exit
220: Baffle member 300: Demister

Claims (6)

In the gas-liquid separation device that separates the liquid contained in the gas to be treated,
A housing having a receiving space inside, a gas outlet at the top, and a liquid outlet at the bottom; and
It includes a gas supply unit installed on one side of the housing in a horizontal direction intersecting the vertical center axis of the housing to supply gas to be treated within the receiving space,
The gas supply unit,
A gas supply pipe of a hollow tube body provided with an inlet through which the gas to be treated is introduced on one side and a long hole-shaped outlet along the longitudinal direction at the lower part of the other side; and
A gas-liquid separation device comprising a baffle member installed in the gas supply pipe to block at least the lower side of the internal movement passage.
According to paragraph 1,
The baffle member,
A gas-liquid separation device disposed on the long hole-shaped outlet, and dividing the outlet into at least two flow paths along the longitudinal direction of the moving passage to distribute fluid momentum of the supplied gas to be treated.
According to paragraph 2,
The baffle member,
A gas-liquid separation device comprising a semi-disc shape with a flat top.
According to paragraph 3,
The height of the top of the baffle member is,
A gas-liquid separation device that is equal to the central axis of the gas supply pipe or formed higher than the central axis of the gas supply pipe.
According to paragraph 2,
The baffle member,
A gas-liquid separation device comprising one disposed between the vertical central axis of the housing and the inlet of the gas supply pipe.
According to paragraph 2,
The baffle member,
A gas-liquid separation device including one inclined at 0 to 15° toward the inlet side of the gas supply pipe based on the vertical center axis of the housing.

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