CN215891937U

CN215891937U - Floating Production Storage and Offloading (FPSO) floating platform TEG buffer tank balance pipeline condensed water falling device

Info

Publication number: CN215891937U
Application number: CN202122006457.1U
Authority: CN
Inventors: 庄永升; 陶进新; 周艳; 叶彤; 谭俊章
Original assignee: Jutal Offshore Oil Services Zhuhai Co ltd
Current assignee: Jutal Offshore Oil Services Zhuhai Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-22
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a condensate water falling device for a balance pipeline of a Floating Production Storage and Offloading (FPSO) floating platform (TEG) buffer tank, which comprises the TEG buffer tank, a TEG stripping tower and a TEG reboiler, wherein the same balance pipeline is connected among the TEG buffer tank, the TEG stripping tower and the TEG reboiler are arranged on the same floor and connected through a bidirectional pipeline, and the TEG buffer tank is arranged on the floor at the bottom of the TEG stripping tower and the TEG reboiler. According to the utility model, a stripping pipeline is additionally arranged, so that condensed water is prevented from entering regenerated TEG, the concentration of TEG is reduced, the dehydration effect of TEG is influenced, the concentration of TEG has an important influence on the dehydration effect of natural gas, the concentration of TEG is reduced, a larger amount of TEG is needed to achieve the original dehydration effect, the TEG flow is increased, the energy consumption of a TEG reboiler and an on-line pump is correspondingly increased, and the project cost is increased.

Description

Floating Production Storage and Offloading (FPSO) floating platform TEG buffer tank balance pipeline condensed water falling device

Technical Field

The utility model belongs to the technical field of TEG dehydration and regeneration processes, and particularly relates to a condensate water falling device for a balance pipeline of a Floating Production Storage and Offloading (FPSO) floating platform TEG buffer tank.

Background

The natural gas flowing from the wellhead is almost saturated with gas phase water and may even carry some amount of liquid water. The presence of moisture in natural gas often has serious consequences, for example the presence of CO₂And H₂The natural gas of S forms acid in the presence of water to corrode pipelines and equipment; forming natural gas hydrates under certain conditions to block valves, pipelines and equipment; reducing the pipeline transportation capacity and causing unnecessary power consumption. The presence of moisture in natural gas is a very unfavorable event and therefore dehydration of natural gas is very necessary.

Currently, in the TEG dehydration and regeneration design, a TEG buffer tank, a TEG stripping tower and a TEG reboiler are connected together by a pressure balancing pipeline, so that the pressure of three containers is consistent. Because the operating temperature of TEG reboiler and stripper is higher, and the operating temperature of buffer tank is lower, and the gas of these two containers can be through in balanced pipeline reachs the buffer tank, and during the steam in the gas meets cold and can condense into the drop of water and fall to the buffer tank, reduced the concentration of regeneration TEG, influence the dehydration effect of low reaches equipment.

Therefore, it is necessary to invent a condensate return device for a TEG buffer tank balance pipeline of an FPSO floating platform to solve the above problems.

Disclosure of Invention

In view of the above problems, the present invention provides a condensate water falling device for a balance pipeline of a Floating Production Storage and Offloading (FPSO) TEG buffer tank, so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a condensate water falling device of a balance pipeline of a floating production storage and offloading (TEG) buffer tank of a Floating Platform (FPSO) TEG comprises a TEG buffer tank, a TEG stripping tower and a TEG reboiler, wherein the same balance pipeline is connected among the TEG buffer tank, the TEG stripping tower and the TEG reboiler are arranged on the same floor and connected through a bidirectional pipeline, and the TEG buffer tank is arranged on the floor at the bottom of the TEG stripping tower and the TEG reboiler;

TEG strip tower one side is provided with the strip air supply line, the strip air supply line runs through the TEG reboiler and is connected with the TEG strip tower, be connected with the strip pipeline between strip air supply line and the TEG buffer tank, and be provided with ball valve and stop valve between the both ends, the TEG buffer tank is located strip pipeline connection position and is provided with the manometer.

Furthermore, a liquid collecting device is arranged at the bottom of the TEG buffer tank, a pressure relief pipe is connected between one side of the liquid collecting device and the balance pipeline, and a one-way valve is arranged between two ends of the pressure relief pipe.

Further, the liquid collecting device comprises a liquid collecting barrel, a liquid outlet pipe with an adjusting valve is arranged at the bottom of the liquid collecting barrel, one end of the top of the liquid collecting barrel is communicated with the interior of the TEG buffer tank, one section of inner diameter of the top of the liquid collecting barrel is smaller than one section of inner diameter of the bottom of the liquid collecting barrel, one section of bottom of the top of the liquid collecting barrel is connected with a sealing plug, a T-shaped rod is connected between two sides of the sealing plug and the inner wall of the liquid collecting barrel, the T-shaped rod penetrates through two sides of the sealing plug movably, and a first spring is sleeved on the surface of the T-shaped rod.

Further, the TEG buffer tank is located the position that a collection liquid section of thick bamboo runs through the intercommunication and sets up for the horn mouth form, and the inside weight that is equipped with 2/3 volumetric condensed liquid of horn mouth is greater than the elasticity of first spring, and one section toper setting that is in the sealing plug top, and with the sealed setting of a collection liquid section of thick bamboo inner wall.

Further, a safety pipe is arranged on one side of the liquid collecting barrel, the safety pipe is communicated with the inside of the liquid collecting barrel, a safety block is arranged inside the safety pipe in a sliding mode, the inner wall of the safety block and the inner wall of the safety pipe are matched with each other through a precision matching piece, one end, located inside the safety pipe, of the safety block is connected with a second spring, and a pressure relief groove is formed in the surface of the safety pipe.

Furthermore, the inside one end of safety pipe slides and is provided with the regulating block, the safety pipe is the rectangle setting with the cross sectional shape of regulating block, regulating block one side screw thread grafting has the lead screw, and lead screw one end rotates and runs through the safety pipe and extend to the outside.

Furthermore, the elastic coefficient of the first spring is smaller than that of the second spring, and the distance between the adjusting block and the pressure relief groove is larger than the thickness of the safety block.

The utility model has the technical effects and advantages that:

1. according to the utility model, a stripping pipeline is additionally arranged, condensed water is prevented from entering the regenerated TEG, the concentration of the TEG is reduced, so that the dehydration effect of the TEG is influenced, the concentration of the TEG has an important influence on the dehydration effect of natural gas, the concentration of the TEG is reduced, a larger amount of TEG is required to reach the original dehydration effect, the flow of the TEG is increased, the energy consumption of a TEG reboiler and a pipeline pump is correspondingly increased, the project cost is increased, the condensed water falling is reduced through stripping gas purging, the concentration of the regenerated TEG is ensured to meet the requirement, and the cost is reduced.

2. The liquid collecting barrel is arranged, so that when the internal pressure of the TEG buffer tank is high, the pressure is discharged into the balance pipeline through the pressure relief pipe to neutralize the pressure, the internal pressure of the TEG buffer tank is prevented from increasing, and the TEG buffer tank is prevented from being damaged.

3. The safety pipe is arranged, so that the safety block can be pushed to a section behind the pressure relief groove, high-pressure gas is discharged through the pressure relief groove, the internal pressure of the TEG buffer tank is prevented from being high, explosion is prevented, and the pressure to be borne by the TEG buffer tank is effectively adjusted through the adjusting block.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows an overall system flow diagram of an embodiment of the present invention;

FIG. 2 shows an enlarged view of section A of FIG. 1 of an embodiment of the present invention;

in the figure: 1. a TEG buffer tank; 2. a TEG stripping tower; 3. a TEG reboiler; 4. a balance line; 5. stripping the gas supply line; 6. a stripping line; 7. a ball valve; 8. a stop valve; 9. a pressure gauge; 10. a pressure relief pipe; 11. a one-way valve; 12. a liquid collection cylinder; 13. a liquid outlet pipe; 14. a sealing plug; 15. a T-shaped rod; 16. a first spring; 17. a safety tube; 18. a safety block; 19. a second spring; 20. a pressure relief groove; 21. an adjusting block; 22. and a screw rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a condensate water falling device for a balanced pipeline of a TEG buffer tank of an FPSO floating platform, which comprises a TEG buffer tank 1, a TEG stripping tower 2 and a TEG reboiler 3, wherein the TEG buffer tank 1, the TEG stripping tower 2 and the TEG reboiler 3 are connected with one balanced pipeline 4, the TEG stripping tower 2 and the TEG reboiler 3 are arranged on the same floor and connected with each other by a bidirectional pipeline, and the TEG buffer tank 1 is arranged on the floor at the bottom of the TEG stripping tower 2 and the TEG reboiler 3;

a stripping gas supply line 5 is arranged on one side of the TEG stripping tower 2, the stripping gas supply line 5 penetrates through a TEG reboiler 3 and is connected with the TEG stripping tower 2, a stripping line 6 is connected between the stripping gas supply line 5 and the TEG buffer tank 1, a ball valve 7 and a stop valve 8 are arranged between the two ends of the TEG buffer tank 1, and a pressure gauge 9 is arranged at the connecting position of the stripping line 6 of the TEG buffer tank 1;

before the TEG regeneration system operates, the ball valve 7 and the stop valve 8 on the stripping pipeline 6 are both in a closed state, after the TEG regeneration system operates stably, the ball valve 7 is opened, then a little stop valve 8 is opened slowly, the pressure gauge 9 on the TEG buffer tank 1 is observed, when the reading of the pressure gauge 9 is larger than the original reading by 0.5kpa, the stop valve 8 is stopped to be opened, the pressure of gas from the fuel gas system is reduced by the stop valve 8 and is still larger than the operating pressure in the buffer tank, and the pressure in the stripping gas supply pipeline 5 is slightly larger than that of the TEG stripping tower 2 and the TEG reboiler 3 after the stripping gas enters the TEG buffer tank 1, so that the water vapor in the balance pipeline 4 can be prevented from entering the buffer tank, and the concentration of the regenerated TEG is prevented from being influenced by the occurrence of condensed water; TEG flows to the TEG buffer tank 1 from the TEG stripping tower 2 through gravity, when a stop valve 8 is opened, the change of a pressure gauge 9 in the TEG buffer tank 1 is observed, the pressure increase cannot exceed the gravity of the TEG height difference to subtract the pressure drop along the TEG pipeline, if the pressure increase is larger than the difference, the TEG in the TEG stripping tower 2 cannot enter the TEG buffer tank 1, and the normal operation of the system is influenced;

according to the utility model, the stripping pipeline 6 is additionally arranged, so that condensed water is prevented from entering the regenerated TEG, the concentration of the TEG is reduced, the dehydration effect of the TEG is influenced, the concentration of the TEG has an important influence on the dehydration effect of natural gas, the concentration of the TEG is reduced, a larger amount of TEG is required to achieve the original dehydration effect, the flow of the TEG is increased, the energy consumption of a TEG reboiler 3 and an on-pipeline pump is correspondingly increased, the project cost is increased, the condensed water falling is reduced through stripping gas purging, the concentration of the regenerated TEG is ensured to meet the requirement, and the cost is reduced.

Further, a liquid collecting device is arranged at the bottom of the TEG buffer tank 1, a pressure relief pipe 10 is connected between one side of the liquid collecting device and the balance pipeline 4, and a one-way valve 11 is arranged between two ends of the pressure relief pipe 10; the liquid collecting device comprises a liquid collecting barrel 12, a liquid outlet pipe 13 with an adjusting valve is arranged at the bottom of the liquid collecting barrel 12, one end of the top of the liquid collecting barrel 12 is communicated with the interior of the TEG buffer tank 1, the inner diameter of one section of the top of the liquid collecting barrel 12 is smaller than that of one section of the bottom, the bottom of one section of the top of the liquid collecting barrel 12 is connected with a sealing plug 14, a T-shaped rod 15 is connected between two sides of the sealing plug 14 and the inner wall of the liquid collecting barrel 12, the T-shaped rod 15 movably penetrates through two sides of the sealing plug 14, and a first spring 16 is sleeved on the surface of the T-shaped rod 15; the TEG buffer tank 1 is arranged in a bell mouth shape at the position where the liquid collecting cylinder 12 penetrates and is communicated, the weight of the condensed liquid with the volume of 2/3 filled in the bell mouth is larger than the elastic force of the first spring 16, and one section of the top of the sealing plug 14 is arranged in a conical shape and is sealed with the inner wall of the liquid collecting cylinder 12;

when the condensate in the TEG buffer tank 1 is accumulated more than a small amount, the condensate enters the bell mouth, when the condensate is accumulated more, the sealing plug 14 is pressed open, the condensate enters the liquid collecting cylinder 12 to be collected, or when the internal pressure of the TEG buffer tank 1 is higher, the sealing plug 14 is pushed open by the internal pressure, the condensate enters the liquid collecting cylinder 12 and is discharged to the inside of the balance pipeline 4 through the pressure relief pipe 10 to neutralize the pressure, so that the internal pressure of the TEG buffer tank 1 is prevented from increasing, and when the condensate in the liquid collecting cylinder 12 reaches a certain degree, the liquid outlet pipe 13 is opened to discharge;

according to the utility model, the liquid collecting barrel 12 is arranged, so that when the internal pressure of the TEG buffer tank 1 is high, the pressure is discharged to the inside of the balance pipeline 4 through the pressure relief pipe 10 to neutralize the pressure, the internal pressure of the TEG buffer tank 1 is prevented from increasing, and the TEG buffer tank 1 is prevented from being damaged.

Further, a safety pipe 17 is arranged on one side of the liquid collecting barrel 12, the safety pipe 17 is communicated with the interior of the liquid collecting barrel 12, a safety block 18 is arranged in the safety pipe 17 in a sliding mode, the safety block 18 and the inner wall of the safety pipe 17 are arranged in a matched mode through a precision matching piece, one end, located on the safety block 18, in the safety pipe 17 is connected with a second spring 19, and the surface of the safety pipe is provided with a pressure relief groove 20; an adjusting block 21 is slidably arranged at one end inside the safety pipe 17, the cross sections of the safety pipe 17 and the adjusting block 21 are both rectangular, a screw rod 22 is inserted into one side of the adjusting block 21 in a threaded manner, and one end of the screw rod 22 rotatably penetrates through the safety pipe 17 and extends to the outside; the elastic coefficient of the first spring 16 is smaller than that of the second spring 19, and the distance between the adjusting block 21 and the pressure relief groove 20 is larger than the thickness of the safety block 18;

when the internal pressure of the TEG buffer tank 1 reaches a certain degree, the balance pipeline 4 cannot play a role in neutralization, and the internal pressure of the TEG buffer tank 1 reaches a level capable of pushing the safety block 18, the safety block 18 is pushed to a section behind the pressure relief groove 20, so that high-pressure gas is discharged through the pressure relief groove 20, the internal pressure of the TEG buffer tank 1 is prevented from being large, explosion is generated, when the pressure born by the TEG buffer tank 1 needs to be adjusted, the adjusting screw rod 22 is used for extruding the adjusting block 21 to the position between the safety blocks 18, the pressure born when the safety block 18 reaches the pressure relief groove 20 is increased, and the pressure born by the TEG buffer tank 1 needs to be adjusted effectively;

the safety pipe 17 is arranged, so that the safety block 18 can be pushed to a section behind the pressure relief groove 20, high-pressure gas is discharged through the pressure relief groove 20, the internal pressure of the TEG buffer tank 1 is prevented from being high, explosion is prevented, and the pressure to be borne by the TEG buffer tank 1 can be effectively adjusted through the adjusting block 21.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a FPSO floating platform TEG buffer tank equilibrium pipeline condensate water falls back device, includes TEG buffer tank (1), TEG strip tower (2) and TEG reboiler (3), its characterized in that: the TEG buffer tank (1), the TEG stripping tower (2) and the TEG reboiler (3) are connected with one balance pipeline (4) therebetween, the TEG stripping tower (2) and the TEG reboiler (3) are arranged on the same floor and connected with one another by a bidirectional pipeline, and the TEG buffer tank (1) is arranged on the floor at the bottom of the TEG stripping tower (2) and the TEG reboiler (3);

TEG strip tower (2) one side is provided with strip air supply line (5), strip air supply line (5) run through TEG reboiler (3) and are connected with TEG strip tower (2), be connected with strip pipeline (6) between strip air supply line (5) and TEG buffer tank (1), and be provided with ball valve (7) and stop valve (8) between the both ends, TEG buffer tank (1) are located strip pipeline (6) hookup location and are provided with manometer (9).

2. The device of claim 1, wherein the device comprises: the TEG buffer tank (1) is characterized in that a liquid collecting device is arranged at the bottom of the TEG buffer tank (1), a pressure relief pipe (10) is connected between one side of the liquid collecting device and the balance pipeline (4), and a one-way valve (11) is arranged between two ends of the pressure relief pipe (10).

3. The device of claim 2, wherein the device comprises: the liquid collecting device comprises a liquid collecting barrel (12), a liquid outlet pipe (13) with an adjusting valve is arranged at the bottom of the liquid collecting barrel (12), one end of the top of the liquid collecting barrel (12) is communicated with the interior of the TEG buffer tank (1), one section of the inner diameter of the top of the liquid collecting barrel (12) is smaller than one section of the inner diameter of the bottom, one section of the bottom of the top of the liquid collecting barrel (12) is connected with a sealing plug (14), a T-shaped rod (15) is connected between the two sides of the sealing plug (14) and the inner wall of the liquid collecting barrel (12), the two sides of the sealing plug (14) are movably penetrated by the T-shaped rod (15), and a first spring (16) is sleeved on the surface of the T-shaped rod.

4. The device of claim 3, wherein the device comprises: the TEG buffer tank (1) is located the position that a liquid collecting cylinder (12) runs through the intercommunication and is arranged for the horn mouth shape, and the inside weight that is equipped with 2/3 volume's condensed liquid of horn mouth is greater than the elasticity of first spring (16), and sealing plug (14) top one section is the toper setting, and with the sealed setting of liquid collecting cylinder (12) inner wall.

5. The device of claim 3, wherein the device comprises: the safety device is characterized in that a safety pipe (17) is arranged on one side of the liquid collecting barrel (12), the safety pipe (17) is communicated with the inside of the liquid collecting barrel (12), a safety block (18) is arranged inside the safety pipe (17) in a sliding mode, the inner wall of the safety block (18) and the inner wall of the safety pipe (17) are arranged in a matched mode through a precision matching piece, one end, located in the safety block (18), of the inside of the safety pipe (17) is connected with a second spring (19), and a pressure relief groove (20) is formed in the surface of the safety pipe.

6. The device of claim 5, wherein the device comprises: the safety pipe is characterized in that an adjusting block (21) is arranged at one end inside the safety pipe (17) in a sliding mode, the safety pipe (17) and the adjusting block (21) are arranged in a rectangular mode, a screw rod (22) is inserted into one side of the adjusting block (21) in a threaded mode, and one end of the screw rod (22) is rotated to penetrate through the safety pipe (17) and extend to the outside.

7. The device of claim 6, wherein the device comprises: the elastic coefficient of the first spring (16) is smaller than that of the second spring (19), and the distance between the adjusting block (21) and the pressure relief groove (20) is larger than the thickness of the safety block (18).