CN220959207U - Device for providing cold energy for circulating water in circulating water heat exchanger - Google Patents
Device for providing cold energy for circulating water in circulating water heat exchanger Download PDFInfo
- Publication number
- CN220959207U CN220959207U CN202323006273.0U CN202323006273U CN220959207U CN 220959207 U CN220959207 U CN 220959207U CN 202323006273 U CN202323006273 U CN 202323006273U CN 220959207 U CN220959207 U CN 220959207U
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- Prior art keywords
- circulating water
- heat exchanger
- low
- pipeline
- cooling tower
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 238000001816 cooling Methods 0.000 claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 229910021529 ammonia Inorganic materials 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belongs to the technical field of chemical industry, and particularly relates to a device for providing cold energy for circulating water in a circulating water heat exchanger, which comprises a circulating water cooling tower, wherein the upper part of the circulating water cooling tower is connected with a circulating water inlet pipeline, the lower part of the circulating water cooling tower is connected with a dirty nitrogen inlet pipeline, pall rings are scattered in the circulating water cooling tower, the bottom of the circulating water cooling tower is connected with a shower guide pipe and a circulating water outlet pipeline, the other end of the circulating water outlet pipeline is connected with the inlet of a first low-temperature water pump, the outlet of the first low-temperature water pump is connected with a water pump outlet pipeline, and the other end of the water pump outlet pipeline is connected with the heat exchanger; according to the circulating water cooling tower, the abundant polluted nitrogen gas is used as a cold source when the air separation device is in normal operation, the cold energy is subjected to heat exchange for the circulating water, the purpose of cold energy recovery is achieved, and the heat exchange effect of the heat exchanger can be effectively improved.
Description
Technical Field
The utility model belongs to the technical field of chemical industry, and particularly relates to a device for providing cooling capacity for circulating water in a circulating water heat exchanger.
Background
In the running process of the air separation device, a great amount of cooling capacity is needed for the heat exchangers at all stages and the oil cooler of the compressor unit to maintain the normal running of the unit. The method generally used is to cool down each heat exchanger by using circulating water as a refrigerant. When the temperature of the circulating water is high in summer, the temperature of the circulating water is close to 30 ℃, so that the heat exchange effect of each heat exchanger is poor, and the occurrence of load reduction and even parking risks of the unit can be caused when the heat exchange effect is serious.
Disclosure of utility model
The utility model provides a device for providing cold for circulating water in a circulating water heat exchanger.
The utility model adopts the following technical scheme to achieve the aim:
The utility model provides a device for circulation water provides cold volume in circulating water heat exchanger, includes the circulating water cooling tower the upper portion of circulating water cooling tower is connected with circulating water inlet pipeline the lower part of circulating water cooling tower is connected with dirty nitrogen gas inlet pipeline, the starting end of dirty nitrogen gas inlet pipeline is connected with the cold box drain of air separation plant be provided with first governing valve on the circulating water inlet pipeline the end-to-end connection of circulating water inlet pipeline has the shower nozzle be provided with No. two governing valves on the dirty nitrogen gas inlet pipeline the end-to-end connection of dirty nitrogen gas inlet pipeline has the gas distribution dish the stack has the pall ring in the circulating water cooling tower the bottom of circulating water cooling tower is provided with long-range liquid level meter the bottom of circulating water cooling tower is connected with guide shower pipe and circulating water outlet pipeline be provided with guide shower valve on the guide shower pipe be provided with the stop valve on the circulating water outlet pipeline, the other end and the entry connection of No. one low temperature water pump, no. one low temperature water pump's exit connection has the water pump export, no. two governing valve and No. two heat exchanger, no. two governing valve and long-range liquid level meter.
Further, the two ends of the first low-temperature water pump are connected with standby low-temperature water pumps in parallel.
Still further, the other end of water pump outlet line is connected with the entry of ammonia cooler, the export of ammonia cooler is connected with low temperature water delivery line, low temperature water delivery line is connected with the heat exchanger.
Still further, be provided with long-range automatic regulating valve on the water pump outlet pipeline be provided with long-range flowmeter on the low temperature water delivery pipeline, the aperture of long-range automatic regulating valve can be according to the flow control valve that long-range flowmeter measured, long-range automatic regulating valve and long-range flowmeter all with DCS control system electric connection.
Further, a bypass pipe is connected in parallel between the inlet and the outlet of the ammonia cooler, and a bypass valve is provided on the bypass pipe.
Further, a check valve is provided on the low temperature water distribution line for preventing the circulating water in the heat exchanger from flowing backward.
Further, a remote automatic stop valve is arranged on the low-temperature water distribution pipeline and used for adjusting the water quantity of low-temperature water entering the heat exchanger, and the remote automatic stop valve is electrically connected with the DCS control system.
Still further be provided with long-range manometer and level gauge No. one on the ammonia cooler, long-range manometer and level gauge No. one all with DCS control system electric connection.
Compared with the prior art, the utility model has the following advantages:
According to the circulating water cooling tower, the abundant polluted nitrogen is used as a cold source when the air separation device normally operates, the cold energy is subjected to heat exchange for circulating water, the purpose of cold energy recovery is achieved, the heat exchange effect of the heat exchanger can be effectively improved, the load reduction or parking risk of the unit due to poor heat exchange effect of the circulating water is avoided, and the safe and stable operation of the unit in summer is ensured;
According to the utility model, the ammonia cooler is arranged behind the first low-temperature water pump and used as a supplementary cold source, and the circulating water can be further cooled according to actual conditions by adjusting the ammonia side pressure and the liquid level of the ammonia cooler;
The low-temperature water is sent to the circulating water of each heat exchanger through the low-temperature water distribution pipeline, so that the circulating water temperature of the heat exchanger is reduced, and the heat exchange effect of the heat exchanger is improved; the one-way valve and the remote automatic stop valve are arranged on the low-temperature water distribution pipeline, so that the backflow of circulating water of the heat exchanger under special conditions can be prevented, and the water quantity of low-temperature water can be regulated according to actual conditions;
Compared with the prior art that the circulating water is used as the cooling medium of the heat exchanger, the heat exchange effect of the heat exchanger can be effectively improved, and the forced shutdown accident of the unit caused by poor heat exchange effect of the heat exchanger due to high temperature of the circulating water in summer is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
In the figure, a circulating water cooling tower 1, a circulating water inlet pipeline 2, a polluted nitrogen inlet pipeline 3, an air separation device 4, a first regulating valve 5, a spray head 6, a second regulating valve 7, a gas distribution disc 8, a pall ring 9, a remote liquid level meter 10, a shower guide pipe 11, a circulating water outlet pipeline 12, a shower guide valve 13, a first low-temperature water pump 14, a water pump outlet pipeline 15, a heat exchanger 16, a DCS control system 17, a standby low-temperature water pump 18, an ammonia cooler 19, a low-temperature water distribution pipeline 20, a remote automatic regulating valve 21, a remote flowmeter 22, a bypass pipe 23, a bypass valve 24, a one-way valve 25, a remote automatic stop valve 26, a remote pressure gauge 27, a first liquid level meter 28 and a first stop valve 29.
Detailed Description
In order to further illustrate the technical scheme of the utility model, the utility model is further illustrated by the following examples.
As shown in figure 1, the device for providing cold energy for circulating water in the circulating water heat exchanger comprises a circulating water cooling tower 1, wherein the upper part of the circulating water cooling tower 1 is connected with a circulating water inlet pipeline 2, the lower part of the circulating water cooling tower 1 is connected with a polluted nitrogen inlet pipeline 3, the starting end of the polluted nitrogen inlet pipeline 3 is connected with a cold box sewage outlet of an air separation device 4, the circulating water inlet pipeline 2 is provided with a first regulating valve 5, the tail end of the circulating water inlet pipeline 2 is connected with a spray head 6, the polluted nitrogen inlet pipeline 3 is provided with a second regulating valve 7, the tail end of the polluted nitrogen inlet pipeline 3 is connected with a gas distribution disc 8, pall rings 9 are scattered in the circulating water cooling tower 1, the bottom of the circulating water cooling tower 1 is provided with a remote liquid level meter 10, the bottom of the circulating water cooling tower 1 is connected with a shower guide pipe 11 and a circulating water outlet pipeline 12, a shower guide valve 13 is arranged on the shower guide pipe 11, a stop valve 29 is arranged on the circulating water outlet pipeline 12, the other end of the circulating water outlet pipeline 12 is connected with the inlet of a low-temperature water pump 14, the outlet of the low-temperature water pump 14 is connected with a water pump outlet pipeline 15, the two ends of the low-temperature water pump 14 are connected with a standby low-temperature water pump 18 in parallel, the other end of the water pump outlet pipeline 15 is connected with the inlet of an ammonia cooler 19, a remote pressure gauge 27 and a liquid level gauge 28 are arranged on the ammonia cooler 19, the outlet of the ammonia cooler 19 is connected with a low-temperature water distribution pipeline 20, a check valve 25 is arranged on the low-temperature water distribution pipeline 20 and used for preventing the circulating water in the heat exchanger 16 from flowing backwards, a remote automatic stop valve 26 is arranged on the low-temperature water distribution pipeline 20, the device is used for adjusting the water quantity of low-temperature water entering the heat exchanger 16, the low-temperature water distribution pipeline 20 is connected with the heat exchanger 16, a remote automatic regulating valve 21 is arranged on the water pump outlet pipeline 15, a remote flowmeter 22 is arranged on the low-temperature water distribution pipeline 20, the opening of the valve can be regulated by the remote automatic regulating valve 21 according to the flow measured by the remote flowmeter 22, and the first regulating valve 5, the second regulating valve 7, the remote liquid level meter 10, the remote automatic regulating valve 21, the remote flowmeter 22, the remote automatic stop valve 26, the remote pressure gauge 27 and the first liquid level meter 28 are electrically connected with the DCS control system 17.
While the principal features and advantages of the present utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. A device for providing cold energy for circulating water in a circulating water heat exchanger, which is characterized in that: comprises a circulating water cooling tower (1), wherein the upper part of the circulating water cooling tower (1) is connected with a circulating water inlet pipeline (2), the lower part of the circulating water cooling tower (1) is connected with a dirty nitrogen inlet pipeline (3), the starting end of the dirty nitrogen inlet pipeline (3) is connected with a cold box sewage draining outlet of an air separation device (4), a first regulating valve (5) is arranged on the circulating water inlet pipeline (2), the tail end of the circulating water inlet pipeline (2) is connected with a spray head (6), a second regulating valve (7) is arranged on the dirty nitrogen inlet pipeline (3), the tail end of the dirty nitrogen inlet pipeline (3) is connected with a gas distribution disc (8), a pall ring (9) is scattered in the circulating water cooling tower (1), the bottom of the circulating water cooling tower (1) is provided with a remote liquid level meter (10), the bottom of the circulating water cooling tower (1) is connected with a guide pipe (11) and a circulating water outlet pipeline (12), the guide valve (13) is arranged on the guide pipe (11), the circulating water outlet pipeline (12) is provided with a low-temperature water outlet (14), the low-temperature water outlet (14) is connected with a low-temperature water pump (14), the other end of the water pump outlet pipeline (15) is connected with a heat exchanger (16), and the first regulating valve (5), the second regulating valve (7) and the remote liquid level meter (10) are electrically connected with a DCS control system (17).
2. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 1, wherein: and the two ends of the first low-temperature water pump (14) are connected with standby low-temperature water pumps (18) in parallel.
3. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 1, wherein: the other end of the water pump outlet pipeline (15) is connected with an inlet of an ammonia cooler (19), an outlet of the ammonia cooler (19) is connected with a low-temperature water distribution pipeline (20), and the low-temperature water distribution pipeline (20) is connected with a heat exchanger (16).
4. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 3, wherein: the automatic water pump is characterized in that a remote automatic regulating valve (21) is arranged on the water pump outlet pipeline (15), a remote flowmeter (22) is arranged on the low-temperature water distribution pipeline (20), the opening of the valve can be regulated according to the flow measured by the remote flowmeter (22) through the remote automatic regulating valve (21), and the remote automatic regulating valve (21) and the remote flowmeter (22) are electrically connected with the DCS control system (17).
5. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 3, wherein: a bypass pipe (23) is connected in parallel between the inlet and the outlet of the ammonia cooler (19), and a bypass valve (24) is provided on the bypass pipe (23).
6. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 3, wherein: a check valve (25) is provided in the low-temperature water distribution line (20) to prevent the circulating water in the heat exchanger (16) from flowing backward.
7. The apparatus for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 6, wherein: the remote automatic stop valve (26) is arranged on the low-temperature water distribution pipeline (20) and is used for adjusting the water quantity of low-temperature water entering the heat exchanger (16), and the remote automatic stop valve (26) is electrically connected with the DCS control system (17).
8. A device for providing cooling capacity for circulating water in a circulating water heat exchanger according to claim 3, wherein: the ammonia cooler (19) is provided with a remote pressure gauge (27) and a first liquid level gauge (28), and the remote pressure gauge (27) and the first liquid level gauge (28) are electrically connected with the DCS control system (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323006273.0U CN220959207U (en) | 2023-11-07 | 2023-11-07 | Device for providing cold energy for circulating water in circulating water heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323006273.0U CN220959207U (en) | 2023-11-07 | 2023-11-07 | Device for providing cold energy for circulating water in circulating water heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220959207U true CN220959207U (en) | 2024-05-14 |
Family
ID=90976491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323006273.0U Active CN220959207U (en) | 2023-11-07 | 2023-11-07 | Device for providing cold energy for circulating water in circulating water heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220959207U (en) |
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2023
- 2023-11-07 CN CN202323006273.0U patent/CN220959207U/en active Active
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