CN212741259U

CN212741259U - Natural gas demercuration device

Info

Publication number: CN212741259U
Application number: CN202021327193.9U
Authority: CN
Inventors: 何建刚; 孟晓凡; 柳一新; 马玄; 廖曼立; 李海峰
Original assignee: Yichang Li Neng Liquefied Gas Co ltd
Current assignee: Yichang Li Neng Liquefied Gas Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-19
Anticipated expiration: 2030-07-08

Abstract

A natural gas demercuration device comprises a first adsorption tower and a second adsorption tower, wherein a first opening and a second opening are respectively formed in the upper portion and the lower portion of the first adsorption tower, and a third opening and a fourth opening are respectively formed in the upper portion and the lower portion of the second adsorption tower; the first opening is connected with the first air outlet pipe, the second opening is connected with the first air inlet pipe, and the first air inlet pipe is connected with the header pipe; the third opening is connected with the second air inlet pipe, and the fourth opening is connected with the second air outlet pipe; a first branch pipe is connected between the first air outlet pipe and the second air inlet pipe; a second branch pipe is connected between the first air inlet pipe and the second air outlet pipe; and the first air inlet pipe, the second air inlet pipe, the first air outlet pipe, the first branch pipe and the second branch pipe are respectively provided with an electromagnetic valve. The utility model provides a pair of natural gas demercuration device can improve work efficiency.

Description

Natural gas demercuration device

Technical Field

The utility model relates to a natural gas demercuration equipment, especially a natural gas demercuration device.

Background

Aiming at the problems that the existing pipeline gas supply is abnormal or the upstream pipeline gas source is short due to special reasons, natural gas is arranged in a common city for storage, and the function of gas supply and peak regulation of a city gas pipe network is played. The existing natural gas storage is to purify the surplus natural gas and then liquefy the purified natural gas at low temperature into liquid natural gas for storage, and then the liquid natural gas is loaded into each gas supply pipe network during the gas supply peak period. The natural gas feed needs to be demercurated before it can be liquefied.

The existing natural gas demercuration adopts a physical adsorption mode that an adsorbent is placed in a tank body, and when gas passes through the adsorbent, mercury is adsorbed and filtered. The existing demercuration adsorption tower is higher, about 15 meters, inconvenient to maintain and install, needs to be stopped once the adsorbent needs to be replaced, and reduces the production efficiency.

Disclosure of Invention

The utility model aims to solve the technical problem that a natural gas demercuration device is provided, can change the direction that the natural gas enters into the adsorption tower for the adsorbent is by make full use of.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a natural gas demercuration device comprises a first adsorption tower and a second adsorption tower, wherein a first opening and a second opening are respectively formed in the upper portion and the lower portion of the first adsorption tower, and a third opening and a fourth opening are respectively formed in the upper portion and the lower portion of the second adsorption tower;

the first opening is connected with the first air outlet pipe, the second opening is connected with the first air inlet pipe, and the first air inlet pipe is connected with the header pipe; the third opening is connected with the second air inlet pipe, and the fourth opening is connected with the second air outlet pipe;

a first branch pipe is connected between the first air outlet pipe and the second air inlet pipe; a second branch pipe is connected between the first air inlet pipe and the second air outlet pipe;

and the first air inlet pipe, the second air inlet pipe, the first air outlet pipe, the first branch pipe and the second branch pipe are respectively provided with an electromagnetic valve.

The first adsorption tower and the second adsorption tower respectively comprise a first barrel, a second barrel, a third barrel and a fourth barrel which are arranged at intervals from inside to outside, wherein the first barrel, the second barrel and the third barrel are all of net barrel structures, the lower ends of the three net barrels are arranged on the clamping plate, and the upper ends of the three net barrels are arranged on the cup body; a first air inlet cover plate and a second air inlet cover plate are respectively arranged on the reverse sides of the clamping plate and the cup body, and the first air inlet cover plate and the second air inlet cover plate are hermetically connected with the fourth cylinder; and mercury removing agents are arranged in the second cylinder and the third cylinder at intervals.

And annular partition plates are arranged on the second cylinder body at intervals along the length direction.

The utility model relates to a natural gas demercuration device has following technological effect:

1) through two parts about tearing into original adsorption tower, under the prerequisite of guaranteeing equal adsorption efficiency, reduced adsorption tower's height, convenient maintenance. In addition, when the mercury removing agent needs to be replaced, only one adsorption tower can be closed, and the other adsorption tower can be enabled to work normally.

2) Through setting up first barrel, can make in gaseous interval that enters into between second barrel and the third barrel from second barrel lateral wall homodisperse, can increase adsorption area like this for adsorption efficiency.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a simple diagram of the present invention.

Fig. 2 is a schematic view of a first operating state of the present invention.

Fig. 3 is a schematic view of a second operating state of the present invention.

Fig. 4 is a schematic view of a third operating state of the present invention.

Fig. 5 is a sectional view of a first adsorption tower according to the present invention.

Fig. 6 is a schematic structural view of the second cylinder of the present invention.

In the figure: the device comprises a first adsorption tower 1, a second adsorption tower 2, a first opening 3, a second opening 4, a third opening 5, a fourth opening 6, a first air outlet pipe 7, a first air inlet pipe 8, a header pipe 9, a second air inlet pipe 10, a second air outlet pipe 11, a first branch pipe 12, a second branch pipe 13, an electromagnetic valve 14, a first cylinder 15, a second cylinder 16, a third cylinder 17, a fourth cylinder 18, a clamping plate 19, a cup body 20, a first air inlet cover plate 21, a second air inlet cover plate 22, a mercury removing agent 23 and an annular partition plate 24.

Detailed Description

As shown in fig. 1-4, a natural gas demercuration device comprises a first adsorption tower 1 and a second adsorption tower 2, and the height of the original adsorption tower can be reduced by half by arranging the first adsorption tower 1 and the second adsorption tower 2, so that the maintenance and the monitoring are convenient. A first opening 3 and a second opening 4 are respectively arranged above and below the first adsorption tower 1, and a third opening 5 and a fourth opening 6 are respectively arranged above and below the second adsorption tower 2.

The first opening 3 is connected with a first gas outlet pipe 7 and is mainly used for outputting the demercuration gas; the second opening 4 is connected with a first air inlet pipe 8, and the first air inlet pipe 8 is connected with a header pipe 9 and is mainly used for inputting gas before demercuration; the third opening 5 is connected with a second air inlet pipe 10 and is mainly used for inputting gas before demercuration; the fourth opening 6 is connected with a second gas outlet pipe 11 and is mainly used for outputting the gas after demercuration;

in addition, a first branch pipe 12 is connected between the first air outlet pipe 7 and the second air inlet pipe 10; a second branch pipe 13 is connected between the first air inlet pipe 8 and the second air outlet pipe 11; the first branch pipe 12 and the second branch pipe 13 connect the first adsorption tower 1 and the second adsorption tower 2 in series.

And the first air inlet pipe 8, the second air inlet pipe 10, the first air outlet pipe 7, the first branch pipe 12 and the second branch pipe 13 are all provided with electromagnetic valves 14.

Different operating states can be achieved by opening and closing different solenoid valves 14.

The first method comprises the following steps: as shown in fig. 2, solenoid valve 14 is shown closed with a solid line on and closed with a hollow line on. After the electromagnetic valve 14 at the corresponding position is opened, the device inputs the pump body at the front end to send gas into the device, and the gas is output after passing through the first gas inlet pipe 8, the first adsorption tower 1 and the first gas outlet pipe 7.

And the second method comprises the following steps: as shown in fig. 3, the electromagnetic valve 14 is closed and closed in a solid state, and after the electromagnetic valve 14 at the corresponding position is opened, the gas is fed into the pump body at the front end of the device and is output after passing through the second gas inlet pipe 10, the second adsorption tower 2 and the second gas outlet pipe 11.

And the third is that: as shown in fig. 4, the electromagnetic valve 14 is closed when the valve is closed, and the electromagnetic valve 14 at the corresponding position is opened, the gas is fed into the pump body at the front end of the device and is output after passing through the first gas inlet pipe 8, the first adsorption tower 1, the first gas outlet pipe 7, the first branch pipe 12, the second adsorption tower 2 and the second gas outlet pipe 11.

In order to improve the adsorption capacity of the adsorption tower, the internal structures of the first adsorption tower 1 and the second adsorption tower 2 are improved.

As shown in fig. 5-6, each of the first adsorption tower 1 and the second adsorption tower 2 includes a first cylinder 15, a second cylinder 16, a third cylinder 17, and a fourth cylinder 18, which are arranged at intervals from inside to outside, wherein the first cylinder 15, the second cylinder 16, and the third cylinder 17 are all mesh cylinder structures, which are relatively fine and only allow gas to pass through. The lower ends of the three net cylinders are provided with clamping plates 19, and the upper ends of the three net cylinders are provided with cup bodies 20. A clamping ring and two annular grooves are arranged on the opposite end surfaces of the clamping plate 19 and the cup body 20 from inside to outside, and the first cylinder 15 is vertically sleeved on the clamping ring and is positioned by a waistcoat on the clamping ring; the second cylinder 16 and the third cylinder 17 are directly inserted into the annular grooves for positioning. A first air inlet cover plate 21 and a second air inlet cover plate 22 are additionally arranged on the outer sides of the clamping plate 19 and the cup body 20, air ports are formed in the first air inlet cover plate 21 and the second air inlet cover plate 22, the first air inlet cover plate 21 and the second air inlet cover plate 22 are respectively pressed on the clamping plate 19 and the cup body 20 and are in sealing connection with a fourth cylinder 18 on the outer side of the third cylinder 17, and the fourth cylinder 18 is of a solid structure.

The second air inlet cover plate 22, the gas port on the first air inlet cover plate 21 is communicated with the inner cavity of the first cylinder 15, so that the gas can enter the first cylinder 15 through the gas port on the first air inlet cover plate 21, then overflow from the side wall of the first cylinder 15 and enter the space between the first cylinder 15 and the second cylinder 16, and because the annular partition plates 24 are distributed on the side wall of the second cylinder 16 at equal intervals along the length direction, the gas flow at each position is dispersed and evenly enters the space between the second cylinder 16 and the third cylinder 17. The mercury removing agent 23 is arranged in the interval between the second cylinder 16 and the third cylinder 17. The demercuration agent 23 adopts the demercuration agent prepared in the patent with the application number of 201310242135.4, namely the demercuration agent and the preparation method thereof.

The demercuration gas enters the space between the third cylinder 17 and the fourth cylinder 18, then upwards enters the cup body 20 through the through hole of the cup body 20 for certain buffering, and then is discharged from the top end of the second air inlet cover plate 22 at the upper part to enter the next process.

As shown in fig. 5, the adsorption tower gas adsorption here is performed in the order from bottom to top, and the second adsorption tower 2 is performed from top to bottom. Therefore, when installing, the second adsorption tower 2 only needs to be installed by reversing the structure in fig. 5.

Claims

1. A natural gas demercuration device is characterized in that: the adsorption device comprises a first adsorption tower (1) and a second adsorption tower (2), wherein the first adsorption tower (1) is provided with a first opening (3) and a second opening (4) from top to bottom, and the second adsorption tower (2) is provided with a third opening (5) and a fourth opening (6) from top to bottom;

the first opening (3) is connected with a first air outlet pipe (7), the second opening (4) is connected with a first air inlet pipe (8), and the first air inlet pipe (8) is connected with a main pipe (9); the third opening (5) is connected with a second air inlet pipe (10), and the fourth opening (6) is connected with a second air outlet pipe (11);

a first branch pipe (12) is connected between the first air outlet pipe (7) and the second air inlet pipe (10); a second branch pipe (13) is connected between the first air inlet pipe (8) and the second air outlet pipe (11);

and the first air inlet pipe (8), the second air inlet pipe (10), the first air outlet pipe (7), the first branch pipe (12) and the second branch pipe (13) are respectively provided with an electromagnetic valve (14).

2. A natural gas demercuration apparatus according to claim 1, wherein: the first adsorption tower (1) and the second adsorption tower (2) respectively comprise a first cylinder body (15), a second cylinder body (16), a third cylinder body (17) and a fourth cylinder body (18) which are arranged from inside to outside at intervals, wherein the first cylinder body (15), the second cylinder body (16) and the third cylinder body (17) are of net cylinder structures, the lower ends of the three net cylinders are arranged on a clamping plate (19), and the upper ends of the three net cylinders are arranged on a cup body (20); a first air inlet cover plate (21) and a second air inlet cover plate (22) are respectively arranged on the opposite sides of the clamping plate (19) and the cup body (20), and the first air inlet cover plate (21) and the second air inlet cover plate (22) are hermetically connected with the fourth cylinder (18); the mercury removing agent (23) is arranged in the second cylinder (16) and the third cylinder (17) at intervals.

3. A natural gas demercuration apparatus according to claim 2, wherein: annular partition plates (24) are arranged on the second cylinder (16) at intervals along the length direction.