CN210458081U - Cryogenic nitrogen removal process production line for nitrogen-containing natural gas - Google Patents
Cryogenic nitrogen removal process production line for nitrogen-containing natural gas Download PDFInfo
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- CN210458081U CN210458081U CN201921057053.1U CN201921057053U CN210458081U CN 210458081 U CN210458081 U CN 210458081U CN 201921057053 U CN201921057053 U CN 201921057053U CN 210458081 U CN210458081 U CN 210458081U
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Abstract
The utility model discloses a process production line of nitrogen-containing natural gas cryrogenic denitrogenation, including compression precooling tower, the left bottom intercommunication of compression precooling tower has the intake pipe, the left top intercommunication of compression precooling tower has the forcing pipe, the right side intercommunication of compression precooling tower has second communicating pipe, the right side intercommunication of second communicating pipe has the condensing tower, the right side of second communicating pipe runs through the condensing tower and communicates with there is the heat exchanger, the top intercommunication of heat exchanger has third communicating pipe. The utility model discloses a compression precooling tower, forcing pipe, condensing tower, outlet duct, cryrogenic device, drain pipe, denitrogenation tower, controller, heat exchanger, denitrogenation cooler bin and denitrogenation condensation frame can make equipment reach the function that production efficiency is high, have solved on the current market that denitrogenation technology is comparatively complicated, and the operation technology requirement is higher, and degree of automation is lower, and operating time is long, and production efficiency is lower, is unfavorable for the problem that user mass production used.
Description
Technical Field
The utility model relates to a natural gas processing equipment specifically is a technology production line of nitrogen-containing natural gas cryrogenic denitrogenation.
Background
In recent years, the development and utilization of natural gas are the mainstream of energy development in the world, and because the natural gas has the advantages of high efficiency, cleanness, convenience and the like, thereby being widely applied in the chemical industry, the natural gas mainly contains hydrocarbons and a small amount of non-hydrocarbons, such as nitrogen, when the nitrogen content in the natural gas is higher, the heat value is low, the energy consumption is larger in the gathering and transportation process, according to the related data, the nitrogen content in different gas sources is generally 0.1-14.26%, and is respectively even more than 20%, and the removal of the nitrogen therein is an important way for improving the comprehensive utilization value of natural gas, therefore, the importance of denitrification and purification is self-evident, the existing denitrification process in the market is complex, the operation process requirement is high, the automation degree is low, the operation time is long, the production efficiency is low, and the process is not beneficial to mass production and use of users, so that the process production line for deep cooling denitrification of the nitrogen-containing natural gas is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a process production line of nitrogen-containing natural gas cryrogenic denitrogenation possesses the advantage that production efficiency is high, has solved the problem that denitrogenation technology does not possess the high effect of production efficiency on the current market.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a process production line of nitrogen-containing natural gas cryrogenic denitrogenation, includes the compression precooling tower, the left bottom intercommunication of compression precooling tower has the intake pipe, the left top intercommunication of compression precooling tower has the pressurization pipe, the right side intercommunication of compression precooling tower has second communicating pipe, the right side intercommunication of second communicating pipe has the condensing tower, the right side of second communicating pipe runs through the condensing tower and communicates with there is the heat exchanger, the top intercommunication of heat exchanger has third communicating pipe, the top intercommunication of third communicating pipe has the denitrogenation cold box, the right side intercommunication of denitrogenation cold box has first communicating pipe, the right side of first communicating pipe runs through the condensing tower and extends to the outside of condensing tower, the right side intercommunication of first communicating pipe has the denitrogenation tower, the right side of first communicating pipe runs through the denitrogenation tower and communicates with denitrogenation condensation frame, the bottom intercommunication on denitrogenation condensation frame right side has the, the right side of drain pipe runs through the denitrogenation tower and extends to the outside of denitrogenation tower, the right side fixedly connected with cryrogenic device of denitrogenation tower, the left bottom intercommunication of cryrogenic device has the feed liquor pipe, the left side of feed liquor pipe is run through the denitrogenation tower and is linked together with the junction of denitrogenation condensation frame, the top intercommunication of denitrogenation condensation frame has a liquid pipe, one side that the denitrogenation condensation frame was kept away from to a liquid pipe is linked together with the junction of cryrogenic device.
Preferably, one side of the pressurizing pipe, which is far away from the compression pre-cooling tower, is communicated with a pressurizing pump, and the pressure application of the pressurizing pump is controllable.
Preferably, the inner cavity of the second communicating pipe is fixedly connected with a flow valve, and the flow control of the flow valve is manually adjusted.
Preferably, the top of the denitrification tower is communicated with an air outlet pipe, and one side of the air outlet pipe, which is far away from the denitrification tower, is communicated with a residual material recovery device.
Preferably, a controller is fixedly connected to the surface of the compression pre-cooling tower, and the controller can be automatically operated and used through PLC programming.
Preferably, the top of the compression pre-cooling tower is communicated with an automatic pressure relief valve, and the use model of the automatic pressure relief valve is ZSPQ.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a compression precooling tower, forcing pipe, condensing tower, outlet duct, cryrogenic device, drain pipe, denitrogenation tower, controller, heat exchanger, denitrogenation cooler bin and denitrogenation condensation frame can make equipment reach the function that production efficiency is high, have solved on the current market that denitrogenation technology is comparatively complicated, and the operation technology requirement is higher, and degree of automation is lower, and operating time is long, and production efficiency is lower, is unfavorable for the problem that user mass production used.
2. The compression pre-cooling tower can be pressurized remotely through the pressurizing pipe, so that the phenomenon that a large amount of equipment is installed in a centralized manner and occupies a large area is reduced, and the field installation layout of a user is facilitated;
the flow valve can be used for controlling the flow of the gas more conveniently for a user, so that the operation and the use of the user are facilitated, and the practicability of the equipment in use is improved;
through the excess material recovery equipment, part of methane mixed in the separated nitrogen can be fully utilized, so that the waste of cost is avoided, and energy is saved;
the controller can ensure that the use automation degree of the equipment is higher, the workload of workers is reduced, and the lean production work is facilitated to be promoted;
through automatic relief valve, can ensure the use of compression precooling tower safer, the phenomenon that the inner chamber pressure takes place danger when having avoided using.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the condensing tower of the present invention;
FIG. 3 is a cross-sectional view of the denitrification tower of the present invention.
In the figure: 1. compressing the pre-cooling tower; 2. a pressurizing pipe; 3. an automatic pressure relief valve; 4. a flow valve; 5. a condensing tower; 6. a first communication pipe; 7. an air outlet pipe; 8. a cryogenic device; 9. a liquid outlet pipe; 10. a denitrification tower; 11. a second communicating pipe; 12. a controller; 13. an air inlet pipe; 14. a heat exchanger; 15. a third communicating pipe; 16. a denitrification cold box; 17. a denitrification condensation frame; 18. a liquid inlet pipe; 19. a liquid outlet conduit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, in the embodiment of the present invention, a nitrogen-containing natural gas cryogenic denitrification process line comprises a pre-cooling tower 1, a controller 12 is fixedly connected to the surface of the pre-cooling tower 1, the controller 12 can be programmed by a PLC for automatic operation, the controller 12 can increase the automation degree of the equipment, reduce the workload of the operator, and facilitate the advancement of lean production work, an air inlet pipe 13 is connected to the left bottom of the pre-cooling tower 1, an automatic pressure relief valve 3 is connected to the top of the pre-cooling tower 1, the automatic pressure relief valve 3 is ZSPQ, the automatic pressure relief valve 3 can ensure safer use of the pre-cooling tower 1, and avoid the dangerous phenomenon caused by over-high pressure of the inner cavity during use, a pressure pipe 2 is connected to the left top of the pre-cooling tower 1, and a booster pump is connected to one side of the pressure pipe 2 away from the pre-cooling tower 1, the pressure application of the booster pump is controllable, the compression pre-cooling tower 1 can be pressurized remotely through the pressurizing pipe 2, the phenomenon that a large amount of equipment is intensively installed and occupies a large area is reduced, the field installation layout of a user is convenient, the right side of the compression pre-cooling tower 1 is communicated with the second communicating pipe 11, the inner cavity of the second communicating pipe 11 is fixedly connected with the flow valve 4, the flow of the flow valve 4 is manually adjusted, the flow of gas can be more conveniently controlled by the user through the flow valve 4, the operation and the use of the user are convenient, the practicability of the equipment in use is improved, the right side of the second communicating pipe 11 is communicated with the condensing tower 5, the right side of the second communicating pipe 11 penetrates through the condensing tower 5 and is communicated with the heat exchanger 14, the top of the heat exchanger 14 is communicated with the third communicating pipe 15, the top of the third communicating pipe 15 is communicated with the denitrification cold box 16, and the right side of, the right side of the first communicating pipe 6 penetrates through the condensing tower 5 and extends to the outer side of the condensing tower 5, the right side of the first communicating pipe 6 is communicated with a denitrification tower 10, the top of the denitrification tower 10 is communicated with an air outlet pipe 7, one side of the air outlet pipe 7, which is far away from the denitrification tower 10, is communicated with a residual material recovery device, partial methane mixed in the separated nitrogen can be fully utilized through the residual material recovery device, the waste of cost is avoided, energy is saved, the right side of the first communicating pipe 6 penetrates through the denitrification tower 10 and is communicated with a denitrification condensation frame 17, the bottom of the right side of the denitrification condensation frame 17 is communicated with a liquid outlet pipe 9, the right side of the liquid outlet pipe 9 penetrates through the denitrification tower 10 and extends to the outer side of the denitrification tower 10, the right side of the denitrification tower 10 is fixedly connected with a cryogenic device 8, the bottom of the left side of the cryogenic device 8 is communicated with a liquid inlet pipe 18, the, the top of the denitrification condensation frame 17 is communicated with a liquid outlet pipe 19, and one side of the liquid outlet pipe 19, which is far away from the denitrification condensation frame 17, is communicated with the joint of the cryogenic device 8.
The utility model discloses a theory of operation is: the natural gas enters the inner cavity of the compression pre-cooling tower 1 along the gas inlet pipe 13 and is compressed and pre-cooled through the pressurization of the pressurization pipe 2, the natural gas enters the heat exchanger 14 along the second communicating pipe 11 through the control of the flow valve 4 to be cooled, then enters the denitrification cold box 16 along the third communicating pipe 15 to be secondarily cooled, after the cooling is finished, the natural gas enters the denitrification condensation frame 17 along the first communicating pipe 6 to be condensed, the cooling liquid is conveyed to the inner cavity of the denitrification condensation frame 17 along the liquid inlet pipe 18 through the cryogenic device 8 to be cooled so that the gaseous natural gas is changed into liquid, the nitrogen is still discharged in a gas state due to different condensation points and is recycled along the gas outlet pipe 7, the liquid natural gas is discharged along the liquid outlet pipe 9 to finish the denitrification, the cooling liquid in the inner cavity of the denitrification condensation frame 17 circularly enters the cryogenic device 8 along the liquid outlet pipe 19 to, is convenient for popularization and use.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a process production line of nitrogen-containing natural gas cryrogenic denitrogenation, includes compression precooling tower (1), its characterized in that: the left bottom intercommunication of compression precooling tower (1) has intake pipe (13), the left top intercommunication of compression precooling tower (1) has pressurization pipe (2), the right side intercommunication of compression precooling tower (1) has second communicating pipe (11), the right side intercommunication of second communicating pipe (11) has condensing tower (5), the right side of second communicating pipe (11) is run through condensing tower (5) and is communicated with heat exchanger (14), the top intercommunication of heat exchanger (14) has third communicating pipe (15), the top intercommunication of third communicating pipe (15) has denitrogenation cold box (16), the right side intercommunication of denitrogenation cold box (16) has first communicating pipe (6), the right side of first communicating pipe (6) is run through condensing tower (5) and is extended to the outside of condensing tower (5), the right side intercommunication of first communicating pipe (6) has denitrogenation tower (10), the right side of first communicating pipe (6) is run through denitrogenation tower (10) and is led to there is denitrogenation condensation frame (17), the bottom intercommunication on denitrogenation condensation frame (17) right side has drain pipe (9), the right side of drain pipe (9) is run through denitrogenation tower (10) and is extended to the outside of denitrogenation tower (10), the right side fixedly connected with cryrogenic device (8) of denitrogenation tower (10), the left bottom intercommunication of cryrogenic device (8) has feed liquor pipe (18), the left side of feed liquor pipe (18) is run through denitrogenation tower (10) and is linked to each other with the junction of denitrogenation condensation frame (17), the top intercommunication of denitrogenation condensation frame (17) has out liquid pipe (19), it is linked to each other with the junction of cryrogenic device (8) to go out one side that liquid pipe (19) kept away from.
2. The cryogenic nitrogen removal process production line for nitrogen-containing natural gas according to claim 1, characterized in that: one side of the pressurizing pipe (2) far away from the compression pre-cooling tower (1) is communicated with a booster pump, and the pressure application size of the booster pump is controllable.
3. The cryogenic nitrogen removal process production line for nitrogen-containing natural gas according to claim 1, characterized in that: the inner cavity fixedly connected with flow valve (4) of second communicating pipe (11), the flow control of flow valve (4) is manual regulation.
4. The cryogenic nitrogen removal process production line for nitrogen-containing natural gas according to claim 1, characterized in that: the top of the denitrification tower (10) is communicated with an air outlet pipe (7), and one side of the air outlet pipe (7) far away from the denitrification tower (10) is communicated with a residual material recovery device.
5. The cryogenic nitrogen removal process production line for nitrogen-containing natural gas according to claim 1, characterized in that: the surface of the compression pre-cooling tower (1) is fixedly connected with a controller (12), and the controller (12) can be automatically operated and used through PLC programming.
6. The cryogenic nitrogen removal process production line for nitrogen-containing natural gas according to claim 1, characterized in that: the top of the compression pre-cooling tower (1) is communicated with an automatic pressure release valve (3), and the use model of the automatic pressure release valve (3) is ZSPQ.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921057053.1U CN210458081U (en) | 2019-07-08 | 2019-07-08 | Cryogenic nitrogen removal process production line for nitrogen-containing natural gas |
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| CN201921057053.1U CN210458081U (en) | 2019-07-08 | 2019-07-08 | Cryogenic nitrogen removal process production line for nitrogen-containing natural gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593902A (en) * | 2020-11-26 | 2021-04-02 | 海洋石油工程股份有限公司 | Pre-charging nitrogen replacement system for deep-water submarine pipeline and replacement time estimation method |
| CN114440549A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Computer control method for natural gas cryogenic denitrification process |
-
2019
- 2019-07-08 CN CN201921057053.1U patent/CN210458081U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440549A (en) * | 2020-11-03 | 2022-05-06 | 中国石油化工股份有限公司 | Computer control method for natural gas cryogenic denitrification process |
| CN114440549B (en) * | 2020-11-03 | 2024-01-26 | 中国石油化工股份有限公司 | Computer control method for natural gas deep-cooling denitrification process |
| CN112593902A (en) * | 2020-11-26 | 2021-04-02 | 海洋石油工程股份有限公司 | Pre-charging nitrogen replacement system for deep-water submarine pipeline and replacement time estimation method |
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