KR101069177B1 - sea water discharge system for LNG vaporizer - Google Patents

Abstract

The present invention relates to a seawater discharge facility of the LENG vaporization apparatus, the bubble car body such as buoyancy gate 10 and the blocking wall 30 is installed at a predetermined distance in the drain pipe (4), the front of the bubble car body Sprinkler apparatus 20, 21 for spraying seawater is installed.

Therefore, by blocking the bubbles flowing along the sea water flow, and by spraying the sea water to remove the bubbles on the top, the amount of bubbles of sea water discharged to the sea is minimized to prevent the formation of a bubble band near the discharge port.

Dewatering foam, defoamer

Description

Sea water discharge system for LNG vaporizer

The present invention relates to a seawater discharge facility of the LENG vaporization apparatus, and more particularly to a seawater discharge facility of the LENG vaporization apparatus that can prevent a large amount of bubbles generated around the seawater discharge port to form a bubble band.

Natural gas is introduced into the country in a liquid state from overseas origin and stored in tanks.

However, since the gas is supplied to the demand destinations of factories, offices, and homes, an apparatus for vaporizing the liquid natural gas in the gaseous state is required.

LNG (liquefied natural gas) vaporizer includes a seawater vaporizer and a combustion vaporizer. The seawater vaporizer is a device that vaporizes LNG by heat exchange with seawater. To vaporize.

On the other hand, as shown in Figure 1, the chlorine treatment in the chlorine processor (1) and the seawater sucked into the suction pump (2) is supplied to the seawater vaporizer (3) and the heat exchange while falling along the surface of the carburetor tube to heat the LENG inside the vaporizer tube Vaporize.

After that, the sea water moves through the drainage pipe 4 and is discharged back to the sea through the final discharge port 5, and various causes on the movement path from suction to discharge, through the suction pump 2, seawater vaporizer 3 Bubbles are generated due to falling in the air, movement along the bending path of the drainage pipe 4, and the like.

The bubbles rise to the surface of the seawater flow while moving to the outlet port 5 along the drainage pipe 4 to form bubbles, and after the bubbles are discharged to the outlet port 5, the bubbles are collected in a large amount to float (bubble). Strips), which is mistaken for serious environmental pollution, causing frequent complaints.

Therefore, it was required that the bubble band is not formed around the discharge port 5 as described above.

Accordingly, the present invention has been made in accordance with the necessity as described above, to provide a seawater discharge facility of the LENG vaporization apparatus that can prevent the mass bubble phenomena after the discharge port by removing the foam in advance in the drainage process after the seawater vaporizer. The purpose is.

The present invention for achieving the above object,

A drainage pipe connecting the seawater vaporizer and the outlet;

A bubble tea unit installed in the drain pipe;

A watering device installed in front of the bubble tea body;

A waterproof tank installed at a rear portion of the drain pipe;

A watering device installed in the waterproof tank;

It includes.

The bubble tea body may be a buoyancy gate floating up and down along the surface of the seawater flow in the drain pipe.

In addition, the buoyancy gate is formed of a lower portion and the upper portion of the upper body, the guide is formed on both sides of the body, the guide is inserted into the guide grooves formed on both side wall of the drain pipe.

In addition, the buoyancy gate, the housing having an air outlet formed in the upper portion, the suction pump installed inside the housing, the suction pump connecting the suction pump and the surface portion of the seawater flow, and the drain provided on the bottom of the housing A foam suction device including a tube is installed.

In addition, the lower end of the drain pipe is provided adjacent to the surface of the buoyancy gate.

In addition, a free space is formed in the upper wall of the drain pipe in the upper portion of the buoyancy gate so that the buoyancy gate can rise.

On the other hand, the bubble tea body may be a blocking wall formed on the upper wall of the drain pipe.

In addition, the lower end of the blocking wall is formed at a position lower than the upper surface of the lower wall of the drain pipe, the recessed portion is formed in the lower wall below the blocking wall concave downward.

In addition, the discharge pipe is connected to the waterproof tank, the discharge port of the discharge pipe is installed adjacent to the bottom of the sea.

According to the present invention having the above-described configuration, the seawater passing through the seawater vaporizer is inhibited by a large number of bubble tea bodies such as buoyancy gates or blocking walls in the drain pipe, and is removed by the sprinkler.

In addition, it is also sucked and removed by the bubble suction device installed in the buoyancy gate.

In addition, the sea water is gathered in a waterproof tank installed in the rear of the drainage pipe to remove bubbles by the watering device once again.

In this way, the seawater in a state where the bubbles are removed to the maximum is discharged through the discharge port located in the seabed, so that bubbles are not generated by the drop impact when discharged.

Therefore, there is an effect that the phenomenon in which a large amount of bubbles gather and float around the discharge port is eliminated. In other words, since the large-scale bubble band is not formed it can be prevented by this.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

2 is a cross-sectional view of the drainage pipe as a partial cross-sectional view of the seawater discharge facility of the LENG vaporizer according to the present invention, Figure 3 is a plan view of the buoyancy gate installation state.

The drainage pipe 4 is a reinforced concrete structure as a part after the seawater vaporizer 3 in FIG. 1, and is a rectangular tube having a cross section of 3m, a length of 2m, and a wall thickness of 30cm.

That is, the drainage pipe 4 is composed of an upper wall 4a, a lower wall 4b and both side wall bodies 4c connecting them.

The present invention is characterized in that the bubble tea bodies are installed at regular intervals in the drainage pipe 4 as described above, and the watering devices 20 and 21 for spraying seawater in front of the bubble tea bodies are installed.

As the bubble tea body, a buoyancy gate 10 floating up and down depending on the level of seawater flow in the drainage pipe 4 may be installed.

The buoyancy gate 10 is manufactured in a rectangular cylindrical shape having a width that blocks the entire width (length) of the drainage pipe 4 when viewed from the front.

The buoyancy gate 10 has a hollow inside so that it is light in weight and floats well in water. The lower portion submerged in water at a lower thickness than the upper body 10a may generate greater buoyancy (sea water) Flow direction length) is formed into a larger rectangular cylindrical ball 10b.

On the other hand, both sides of the body (10a) is formed with a guide (10aa) protruding.

Guide grooves 4ca are formed in both side wall bodies 4c of the drain pipe 4 with respect to the guide 10aa.

Therefore, the buoyancy gate 10 is installed in the state where the guide 10aa is inserted into the guide groove 4ca so that the buoyancy gate 10 rises and falls in accordance with the water level flowing through the drainage pipe 4. It will always be possible to block the movement of bubbles along the water surface (toward the outlet).

When the buoyancy gate 10 is installed as described above, a free space is formed in the upper wall body 4a of the drainage pipe 4 so that the buoyancy gate 10 can rise when the water level rises.

Meanwhile, the barrier wall 30 may be installed on the upper wall 4a of the drain pipe 4 as the bubble tea body.

The blocking wall 30 is a reinforced concrete structure which is integrally connected with the upper wall 4a and is simultaneously formed when the drainage pipe 4 is constructed.

The blocking wall 30 is formed at a position lower than the upper surface of the lower wall 4b so that the amount of seawater drained becomes very small so that the bubbles on the water can be blocked even when the water level approaches the lower wall 4b. do.

Further, even in the above state, the bottom wall 4b portion below the blocking wall 30 is formed with a recessed portion 4ba recessed and recessed downwardly so that the seawater can be drained.

Therefore, the barrier wall 30 may also block the movement of bubbles floating on the surface of the seawater flow downstream (rear outlet) regardless of variations in the amount of seawater discharged.

As described above, when the bubble flowing along the sea water flow is blocked by the buoyancy gate 10 or the blocking wall 30 and no longer moves downstream, bubbles continue to gather at the location and a large amount of foam F The sprinkling apparatus 20, 21 is sprayed seawater to the part where the bubbles (F) are collected to destroy the bubbles to remove.

Since the bubbles are removed in the drainage pipe 4 as described above, it is possible to prevent the phenomenon of floating by forming a large amount of bubbles around the discharge port 5 (bubble band formation).

On the other hand, the buoyancy gate 10 is to be elevated in accordance with the vertical movement of the sea level in the drainage pipe (4) to further increase the bubble removing performance by installing a bubble suction device 40 in the buoyancy gate 10 by using this Can be.

As shown in the drawing, the foam suction device 40 is installed in the body 10a of the buoyancy gate 10 and has a housing 41 having an air outlet 41a formed therein, and inside the housing 41. It includes a suction pump 42 is installed, a foam suction pipe 43 for connecting the suction pump 42 and the water surface portion of the sea water flow, and a drain pipe 45 provided on the bottom of the housing (41).

That is, the foam suction pipe 43 is connected to the suction port of the suction pump 42, and the discharge port of the suction pump 42 is opened to the inner space of the housing 41. At this time, the outlet of the suction pump 42 is open to the vertical wall surface in the housing 41 to facilitate the separation of water and air so that the mixture of air and water discharged from the outlet can collide with the wall surface.

Therefore, when the suction pump 42 is operated, the bubbles floating on the water surface are sucked through the bubble suction pipe 43 located at the bottom of the water pipe 42 and are discharged into the housing 41.

In the process of being sucked, the foam is already broken and becomes a mixture of air and water, and in that state, the air moves upward and the water moves downward to separate the air from the inside of the housing 41. As described above, when the mixture of air and water collides against the wall of the housing 41, more smooth separation occurs.

That is, the air is discharged to the outside through the air discharge port 41a on the upper portion of the housing 41, and water accumulated at the bottom of the housing 41 is discharged to the outside through the drain pipe 45.

In addition, a filter (not shown) may be installed at the outlet of the drain pipe 45 so as to filter foreign matter, and the filter is periodically replaced.

In this way, in addition to the defoaming action by the sprinkling device 20, the defoaming action by the bubble suction device 40 is performed to improve the overall defoaming performance, so that the amount of bubbles floating around the outlet can be reduced. do.

On the other hand, at the lower end of the suction pipe 43 is provided with a fine sieve net 44 intervals, so as to prevent damage to the suction pump 42 due to foreign matter infiltration.

In addition, the lower end of the drain pipe 45 is preferably installed to be adjacent to the body (10a) surface of the buoyancy gate (10).

This is because when the water discharged from the drain pipe 45 falls to the water surface, this causes another bubble. When the lower end of the drain pipe 45 is adjacent to the surface of the body (10a), the discharged water flows along the surface of the body (10a) is mixed with the water surface without impact, so that no bubbles are generated.

On the other hand, the waterproof tank 50 is constructed in the rear portion of the drainage pipe 4, the discharge pipe in a structure that connects the top of the waterproof tank 50 and the bottom of the sea (or river adjacent to the sea) adjacent thereto ( 60) is installed.

The outlet of the discharge pipe 60, that is, the discharge port 61 (corresponding to Fig. 5 of FIG. 1) is located adjacent to the bottom of the sea.

In addition, the water tank 50 is provided with a plurality of watering device (22). The watering device may be arranged at a predetermined interval on the upper edge portion of the waterproof tank 50, it may be installed in the structure provided on the upper portion of the waterproof tank 50 as shown.

The watering device 22 serves to remove the bubbles by spraying sea water to the top of the foam in the same manner as the above watering device (20, 21).

Therefore, by collecting the seawater discharged in the state in which the foam is removed in the drainage pipe 4 in the waterproof tank 50 for a predetermined time, the bubbles floating on the surface of the waterproof tank 50 can be removed again. do.

Thus, the amount of bubbles contained in the seawater discharged through the discharge port 61 can be reduced as much as possible.

In addition, since the seawater is discharged (deeply drained) at a position adjacent to the bottom, rather than at the surface portion of the seawater, bubbles do not occur because the drop impact does not exist when discharged from the discharge port 61 into the sea.

As described above, according to the present invention, bubble tea bodies (buoyancy gates, blocking walls) and the watering device paired with them, and also the installation of the discharge pipe in which the water tank and the watering device and the discharge port is installed on the seabed, etc. As a result, bubbles are removed from the discharge path as much as possible until seawater is discharged through the seawater vaporizer to the discharge port, thereby eliminating the phenomenon of forming a huge bubble band around the discharge port after discharge.

1 is a schematic diagram showing a seawater supply and drainage path of the seawater vaporizer;

Figure 2 is a cross-sectional view of the drainage pipe as a partial cross-sectional view of the seawater discharge facility of the LENG vaporization apparatus according to the present invention,

3 is a plan view of the buoyancy gate installation state,

4 is a schematic cross-sectional view of the rear portion of the discharge facility as a partial sectional view of the seawater discharge facility of the LENG vaporization apparatus according to the present invention.

* Description of the symbols for the main parts of the drawings *

4: drainage line 10: buoyancy gate

20,21,22: watering device 30: barrier wall

40: foam suction device 50: waterproof tank

60: discharge pipe 61: discharge port

Claims (9)

A drainage pipe connecting the seawater vaporizer and the outlet; A buoyancy gate installed in the drain pipe so as to float up and down along the surface of the sea water flow; A watering device installed in front of the buoyancy gate; A waterproof tank installed at a rear portion of the drain pipe; A watering device installed in the waterproof tank; Seawater discharge facility of the LENG vaporizer including a. delete The method according to claim 1, The buoyancy gate is composed of a lower portion of the lower portion, the body of the upper portion of the upper portion, the guide is formed on both sides of the body, the guide is inserted into the guide grooves formed on both side wall of the drain pipe passage is guided up and down Seawater discharge facility of the LENG vaporization apparatus, characterized in that. The method according to claim 1, The buoyancy gate includes a housing having an air outlet at the top, a suction pump installed inside the housing, a bubble suction pipe connecting the suction pump and the water surface of the seawater flow, and a drain pipe installed at the bottom of the housing. Seawater discharge facility of the LENG vaporization device, characterized in that the bubble suction device is installed. The method according to claim 4, Seawater discharge facility of the L NG vaporizer, characterized in that the lower end of the drain pipe is installed adjacent to the surface of the buoyancy gate. The method according to claim 1, Seawater discharge facility of the L NG vaporizer, characterized in that the clearance is formed in the upper wall of the drain pipe passage upper portion of the buoyancy gate so that the buoyancy gate can rise. The method according to claim 1, Blocking wall is installed on the upper wall of the drainage pipe, the seawater discharge facility of the LNG vaporizer characterized in that the watering device is installed in front of the blocking wall. The method of claim 7, The lower end of the blocking wall is formed at a position lower than the upper surface of the lower wall of the drainage pipe, the seawater discharge facility of the LG vaporizer, characterized in that the recessed portion is formed in the lower wall below the blocking wall concave downward. The method according to claim 1, A discharge pipe is connected to the waterproof tank, and the discharge port of the discharge pipe is seawater discharge facility of the LNG vaporizer, characterized in that installed adjacent to the bottom of the sea.

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