CN214663717U - Improved compressor KO liquid separation tank drainage system - Google Patents
Improved compressor KO liquid separation tank drainage system Download PDFInfo
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- CN214663717U CN214663717U CN202023207517.8U CN202023207517U CN214663717U CN 214663717 U CN214663717 U CN 214663717U CN 202023207517 U CN202023207517 U CN 202023207517U CN 214663717 U CN214663717 U CN 214663717U
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- pipeline
- valve
- buffer tank
- liquid
- tank
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- 239000007788 liquid Substances 0.000 title claims abstract description 122
- 238000000926 separation method Methods 0.000 title claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 235000010599 Verbascum thapsus Nutrition 0.000 claims abstract description 7
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001131 transforming Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Abstract
The utility model relates to an on-spot flowing back of aromatic hydrocarbon mill compressor KO knockout drum is reformed transform, specifically is a compressor KO knockout drum drainage system that relates to the improvement, include: the two sides of the KO liquid separation tank are respectively provided with a first pipeline and a second pipeline, the first pipeline is connected to a pipeline led out from the compressor circulation process system, one end of the second pipeline is connected with the KO liquid separation tank, and the other end of the second pipeline is also connected to the pipeline led out from the compressor circulation process system; one side of the KO liquid separation tank in the same direction as the second pipeline is connected with a KO liquid separation tank liquid level meter through a pipeline; a liquid discharge pipeline is arranged at the bottom of the KO liquid separation tank, an outlet of the liquid discharge pipeline is connected with a buffer tank system, the buffer tank system is connected with a nitrogen system, the top of the buffer tank system is connected to a torch system through a pipeline, and the bottom of the buffer tank is connected to a reformed oil rectifying tower system; the open discharge liquor is changed into closed discharge liquor, and the discharge liquor is discharged to a reformate rectifying tower and recycled again, so that the aims of safety, environmental protection and energy saving are fulfilled.
Description
Technical Field
The utility model relates to an on-spot flowing back of aromatic hydrocarbon mill compressor KO knockout drum is reformed transform, specifically is to relate to a modified compressor KO knockout drum drainage system.
Background
The KO liquid separating tank is a first-stage sealing gas liquid-removing separation device of the compressor, the first-stage sealing gas is from the circulating process gas of the compressor, and contains hydrogen and a small amount of C5+, so the KO liquid separating tank plays a role in removing C5+ heavy components.
At present, the KO liquid separating tank of the aromatic hydrocarbon factory compressor discharges liquid on site, and after the KO liquid separating tank is full of liquid level, the liquid is drained through on-site draining, and is connected well by a barrel, so that safety risk exists.
Disclosure of Invention
In view of the technical problem who exists, the utility model discloses a reasonable flowing back flow process transformation provides a modified compressor KO knockout drum drainage system and method, will obviously arrange the flowing back and change into airtight flowing back, arranges the flowing back to the reformate rectifying column, recycle once more to reach the purpose of safe environmental protection energy-conservation.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: an improved compressor KO knockout drum drainage system comprising: the two sides of the KO liquid separation tank are respectively provided with a first pipeline and a second pipeline, the first pipeline is connected to a pipeline led out from the compressor circulation process system, one end of the second pipeline is connected with the KO liquid separation tank, and the other end of the second pipeline is also connected to the pipeline led out from the compressor circulation process system; one side of the KO liquid separation tank in the same direction as the second pipeline is connected with a KO liquid separation tank liquid level meter through a pipeline; a liquid discharge pipeline is arranged at the bottom of the KO liquid separation tank, an outlet of the liquid discharge pipeline is connected with a buffer tank system, the buffer tank system is connected with a nitrogen system, the top of the buffer tank system is connected to a torch system through a pipeline, and the bottom of the buffer tank is connected to a reformed oil rectifying tower system;
the process gas from the compressor circulation process system is introduced into the compressor primary seal through a pipeline, the process gas from the compressor circulation process system contains hydrogen and a small amount of C5+, and the KO separating tank is used as a liquid removal and separation device to remove liquid to remove C5 +.
Furthermore, a first valve and a second valve are respectively arranged on the first pipeline and the second pipeline, the first pipeline is connected with the lower part of one side of the KO liquid separating tank, and the second pipeline is connected with the upper part of the other side of the KO liquid separating tank;
furthermore, a third valve is arranged on the liquid discharge pipeline;
further, the buffer tank system comprises: the device comprises a buffer tank, a buffer tank liquid level meter, a pressure gauge and a valve; the buffer tank is connected with a liquid discharge pipeline of the KO liquid separation tank through a third pipeline, a fourth valve and a fifth valve are arranged on the third pipeline, a pressure gauge is arranged on the buffer tank, the liquid discharge pipeline of the buffer tank is arranged at the bottom of the buffer tank, and a sixth valve is arranged on the liquid discharge pipeline of the buffer tank; a buffer tank liquid level meter is arranged on one side of the buffer tank opposite to the third pipeline, the right upper side of the top of the buffer tank is connected to a torch system through a fourth pipeline, a safety valve is arranged on the fourth pipeline, a front valve and a rear valve are respectively arranged in front of and behind the safety valve, the fourth pipeline is further provided with a bypass pipeline, and a seventh valve and an eighth valve are arranged on the bypass pipeline;
the accumulated liquid solvent at the bottom of the buffer tank is 3 times of the full liquid level volume of the KO liquid separation tank;
the third pipeline, the buffer tank drainage pipeline, the fourth pipeline and the fourth pipeline bypass pipeline are DN20 and 300 pound pipelines;
the fourth valve is a one-way check valve;
the eighth valve is a ball valve;
the measuring range of the pressure gauge is 3 MPa;
the take-off pressure of the safety valve is 1.8 MPa;
further, the nitrogen system comprises: the device comprises a nitrogen pipeline and three valve groups arranged on the nitrogen pipeline, wherein the nitrogen pipeline is connected to the upper end of one side of a buffer tank in the same direction as a liquid level meter of the buffer tank, the three valve groups are arranged at the inlet position of the nitrogen pipeline, and 2.03MPa nitrogen is introduced into the nitrogen pipeline;
further, the three valve sets respectively comprise, from the inlet direction: the check valve comprises a stop valve, a one-way check valve and a ball valve, wherein an 8-shaped blind plate is arranged between the stop valve and the one-way check valve;
further, the reformate rectification column system comprises: the reformed oil rectifying tower comprises a reformed oil rectifying tower feeding line connected with the reformed oil rectifying tower, a ninth valve arranged on the feeding line, and a buffer tank liquid discharge pipeline connected to the reformed oil rectifying tower feeding line.
Furthermore, the outlet position of the KO liquid separating tank liquid discharge pipeline is also branched to be provided with a lead shower pipeline, and the lead shower pipeline is provided with a lead shower valve.
The liquid discharge method adopting the liquid discharge system comprises the following steps:
when the liquid level meter of the KO liquid separation tank of the compressor displays 10% -30%, liquid drainage operation is needed after the real liquid level is confirmed on site;
firstly, closing the pilot shower valve, opening the safety valve and the front valve and the rear valve of the safety valve, and closing the seventh valve and the eighth valve of the bypass pipeline of the fourth pipeline;
closing the three valve groups of the nitrogen pipeline, and closing the sixth valve of the buffer tank liquid discharge pipeline; the system pressure of the KO liquid separation tank is 1.2 Mpa;
then, opening a third valve, a fourth valve and a fifth valve, discharging all liquid in the KO liquid separating tank into a buffer tank, and then closing the third valve and the fifth valve;
the pressure of the feed line of the reformate rectifying tower is 0.4MPa, the pressure of the discharged liquid to the buffer tank is 1MPa, the pressure of the discharged liquid to the buffer tank is relieved to 0.5MPa through a bypass pipeline of the fourth pipeline by monitoring a pressure gauge of the buffer tank, then a sixth valve of the liquid discharging pipeline of the buffer tank is opened, and the liquid is discharged to the feed line of the reformate rectifying tower and is finally recycled by the reformate rectifying tower.
The liquid discharge method realizes safe and closed liquid discharge and achieves the effects of energy conservation and effective recycling.
In the liquid discharge method, the pressure of the discharged liquid to the buffer tank is 1MPa, and the pressure is obtained after the KO liquid separation tank discharges the liquid to the buffer tank at 1.2MPa and then the pressure is reduced; the system pressure of the KO liquid separating tank and the feed line pressure of the reformate rectifying tower are values according to actual parameters.
The utility model has the advantages that: the utility model discloses a reasonable flowing back flow process transformation provides a modified compressor KO knockout drum drainage system, will obviously arrange the flowing back and change into airtight flowing back, arranges the flowing back to reformate rectifying column, recycle once more to reach the purpose of safety ring protects energy-conservation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a KO liquid separation tank, 2, a first pipeline, 3, a second pipeline, 4, a KO liquid separation tank liquid level meter, 5, a KO liquid separation tank liquid discharge pipeline, 6, a first valve, 7, a second valve, 8, a third valve, 9, a buffer tank, 10, a buffer tank liquid level meter, 11, a pressure gauge, 12, a third pipeline, 13, a fourth valve, 14, a fifth valve, 15, a buffer tank liquid discharge pipeline, 16, a sixth valve, 17, a fourth pipeline, 18, a safety valve, 19, a safety valve front valve, 20, a safety valve rear valve, 21, a bypass pipeline, 22, a seventh valve, 23, an eighth valve, 24, a nitrogen pipeline, 25, a reformed oil rectification tower feeding line, 26, a ninth valve, 27, a pilot line, 28 and a pilot valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in the figure, an improved compressor KO knockout drum drainage system comprises: the device comprises a KO liquid separation tank 1, wherein a first pipeline 2 and a second pipeline 3 are respectively arranged on two sides of the KO liquid separation tank 1, the first pipeline 2 is connected to a pipeline led out from a compressor circulation process system, one end of the second pipeline 3 is connected with the KO liquid separation tank 1, and the other end of the second pipeline is also connected to a pipeline led out from the compressor circulation process system; one side of the KO liquid separation tank 1 in the same direction as the second pipeline is connected with a KO liquid separation tank liquid level meter 4 through a pipeline; a liquid discharge pipeline 5 is arranged at the bottom of the KO liquid separation tank 1, an outlet of the liquid discharge pipeline 5 is connected with a buffer tank system, the buffer tank system is connected with a nitrogen system, the top of the buffer tank system is connected to a torch system through a pipeline, and the bottom of the buffer tank is connected to a reformed oil rectifying tower system;
the first pipeline 2 and the second pipeline 3 are respectively provided with a first valve 6 and a second valve 7, the first pipeline 2 is connected with the lower part of one side of the KO liquid separation tank 1, and the second pipeline 3 is connected with the upper part of the other side of the KO liquid separation tank 1;
further, a third valve 8 is arranged on the liquid discharge pipeline 5;
further, the buffer tank system comprises: the device comprises a buffer tank 9, a buffer tank liquid level meter 10, a pressure gauge 11 and a valve; the buffer tank 9 is connected with the liquid discharge pipeline 5 of the KO liquid separation tank through a third pipeline 12, a fourth valve 13 and a fifth valve 14 are arranged on the third pipeline 12, a pressure gauge 11 is arranged on the buffer tank 9, a buffer tank liquid discharge pipeline 15 is arranged at the bottom of the buffer tank 9, and a sixth valve 16 is arranged on the buffer tank liquid discharge pipeline 15; a buffer tank liquid level meter 10 is arranged on one side of the buffer tank 9 in the direction opposite to the third pipeline 12, the top of the buffer tank 9 is connected to a torch system through a fourth pipeline 17, a safety valve 18 is arranged on the fourth pipeline 17, a front valve 19 and a rear valve 20 are respectively arranged in front of and behind the safety valve 18, a bypass pipeline 21 is further arranged on the fourth pipeline 17, and a seventh valve 22 and an eighth valve 23 are arranged on the bypass pipeline 21;
the nitrogen system comprises: the device comprises a nitrogen pipeline 24 and three valve sets arranged on the nitrogen pipeline 24, wherein the nitrogen pipeline 24 is connected to the upper end of one side of the buffer tank 9 in the same direction as the buffer tank liquid level meter 10, the three valve sets are arranged at the inlet position of the nitrogen pipeline 24, and 2.03MPa nitrogen is introduced into the nitrogen pipeline 24;
the reformate rectification column system comprises: a reformate rectifying tower feed line 25 connected to the reformate rectifying tower, and a ninth valve 26 provided on the feed line, and the buffer tank drain line 15 is connected to the reformate rectifying tower feed line 24.
Furthermore, the outlet position of the KO separating tank liquid discharge pipeline 5 is further branched to be provided with a shower guide pipeline 27, and the shower guide pipeline 27 is provided with a shower guide valve 28.
The liquid discharge method adopting the liquid discharge system comprises the following steps:
when the compressor KO liquid separation tank liquid level meter 4 displays 10% -30%, liquid drainage operation is needed after the real liquid level is confirmed on site;
first, the pilot valve 28 is closed, the safety valve 18 and the front valve 19 and the rear valve 20 of the safety valve are opened, and the seventh valve 22 and the eighth valve 23 of the bypass line 21 of the fourth line 17 are closed;
closing the three valve groups of the nitrogen pipeline 24, and then closing the sixth valve 16 of the buffer tank liquid discharge pipeline 15; the system pressure of the KO liquid separation tank 1 is 1.2 Mpa;
then, opening a third valve 8, a fourth valve 13 and a fifth valve 14, discharging all liquid in the KO liquid separating tank into a buffer tank 9, and then closing the third valve 8 and the fifth valve 14;
the pressure of a feed line 25 of the reformate rectifying tower is 0.4MPa, the pressure of discharged liquid to a buffer tank is 1MPa, the pressure is relieved to 0.5MPa through a bypass line 21 of a fourth line 17 by monitoring a pressure gauge 11 of the buffer tank, a sixth valve 16 of a discharge line 15 of the buffer tank is opened, and the liquid is discharged to the feed line 25 of the reformate rectifying tower and is finally recycled by the reformate rectifying tower.
Claims (8)
1. The utility model provides a modified compressor KO knockout drum drainage system which characterized in that includes: the two sides of the KO liquid separation tank are respectively provided with a first pipeline and a second pipeline, the first pipeline is connected to a pipeline led out from the compressor circulation process system, one end of the second pipeline is connected with the KO liquid separation tank, and the other end of the second pipeline is also connected to the pipeline led out from the compressor circulation process system; one side of the KO liquid separation tank in the same direction as the second pipeline is connected with a KO liquid separation tank liquid level meter through a pipeline; KO liquid separation tank bottom is equipped with the flowing back pipeline, and flowing back pipeline export and buffer tank system connection, buffer tank system and nitrogen system are connected, and pipeline connection to torch system is passed through at buffer tank system top, and the buffer tank bottom is connected to the reformate rectifying column system.
2. The improved compressor KO knockout drum drainage system of claim 1, wherein: the first pipeline and the second pipeline are respectively provided with a first valve and a second valve, the first pipeline is connected with the lower part of one side of the KO liquid separating tank, and the second pipeline is connected with the upper part of the other side of the KO liquid separating tank.
3. The improved compressor KO knockout drum drainage system of claim 1, wherein: and a third valve is arranged on a liquid discharge pipeline of the KO liquid separation tank.
4. The improved compressor KO knockout drum drainage system of claim 1, wherein: the surge tank system includes: the device comprises a buffer tank, a buffer tank liquid level meter, a pressure gauge and a valve; the buffer tank is connected with a liquid discharge pipeline of the KO liquid separation tank through a third pipeline, a fourth valve and a fifth valve are arranged on the third pipeline, a pressure gauge is arranged on the buffer tank, the liquid discharge pipeline of the buffer tank is arranged at the bottom of the buffer tank, and a sixth valve is arranged on the liquid discharge pipeline of the buffer tank; and a buffer tank liquid level meter is arranged on one side of the buffer tank in the direction opposite to the third pipeline, the right upper part of the top of the buffer tank is connected to the torch system through a fourth pipeline, a safety valve is arranged on the fourth pipeline, a front valve and a rear valve are respectively arranged in front of and behind the safety valve, a bypass pipeline is further arranged on the fourth pipeline, and a seventh valve and an eighth valve are arranged on the bypass pipeline.
5. The improved compressor KO knockout drum drainage system of claim 4, wherein: the third pipeline, the buffer tank drainage pipeline, the fourth pipeline and the fourth pipeline bypass pipeline are DN20 and 300 pound pipelines.
6. The improved compressor KO knockout drum drainage system of claim 4, wherein: the take-off pressure of the safety valve is 1.8 MPa.
7. The improved compressor KO knockout drum drainage system of claim 4, wherein: the reformate rectification column system comprises: the reformed oil rectifying tower comprises a reformed oil rectifying tower feeding line connected with the reformed oil rectifying tower, a ninth valve arranged on the feeding line, and a buffer tank liquid discharge pipeline connected to the reformed oil rectifying tower feeding line.
8. The improved compressor KO knockout drum drainage system of claim 1, wherein: the KO liquid separating tank liquid discharge pipeline is also branched to be provided with a lead shower pipeline, and the lead shower pipeline is provided with a lead shower valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207517.8U CN214663717U (en) | 2020-12-28 | 2020-12-28 | Improved compressor KO liquid separation tank drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207517.8U CN214663717U (en) | 2020-12-28 | 2020-12-28 | Improved compressor KO liquid separation tank drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214663717U true CN214663717U (en) | 2021-11-09 |
Family
ID=78503499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023207517.8U Active CN214663717U (en) | 2020-12-28 | 2020-12-28 | Improved compressor KO liquid separation tank drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214663717U (en) |
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2020
- 2020-12-28 CN CN202023207517.8U patent/CN214663717U/en active Active
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