High-pressure pressurization system for flue gas

Abstract

The utility model discloses a flue gas high-pressure pressurization system, and belongs to the field of gas pressurization. The system comprises a compression host, a main motor and exhaust manifolds at all levels. The air inlet end of the first-stage air inlet manifold is connected with an air inlet pipeline, and the air outlet end is connected with the compression host. The air inlet end of the first-stage exhaust manifold is connected with the compression host, the air outlet end of the first-stage exhaust manifold is connected with the air inlet end of the second-stage exhaust manifold, and the air outlet end of the second-stage exhaust manifold is connected with the compression host. The air inlet end of the second-stage exhaust manifold is connected with the compression host, the air outlet end of the second-stage exhaust manifold is connected with the air inlet end of the third-stage exhaust manifold, and the air outlet end of the third-stage exhaust manifold is connected with the compression host. The air inlet end of the four-stage air inlet manifold is connected with the compression main machine, the air outlet end of the four-stage air inlet manifold is connected with the air inlet end of the four-stage exhaust manifold, and the air outlet end of the four-stage exhaust manifold is connected with the compression main machine and an air outlet pipeline. Gas pressure fluctuation in the pressurization system can be effectively reduced, and the service life of the pressurization system is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of gas pressurization, more particularly, relate to a flue gas high pressure pressurization system. BACKGROUND

[0002] Compressed gas, namely the gas compressed by external force. The gas has compressibility, and the gas after being compressed by the gas compressor to reduce the volume and increase the pressure is called compressed gas. Compressed gas is an important power source, and compared with other energy sources, it has the following obvious characteristics: clear and transparent, convenient to transport, no special harmful performance, no fire risk, no fear of overload, can work in many adverse environments, and the gas source is relatively wide and easy to obtain.

[0003] Therefore, many fields such as manufacturing industry, construction industry and energy industry use compressed gas as a power source, for example, in the oil production work of the energy industry, flue gas is compressed and used as a power source for operation.

[0004] For example, the patent document with the Chinese patent application number CN201820292415.4 and the publication date of October 2, 2018 discloses a new flue gas heat power oil extraction equipment, which comprises a waste heat recovery heat exchange system, a flue gas pressurization system, a cooling system, a purification filtration system, a gas mixing system and a flow regulation control system. The inlet of the waste heat recovery heat exchange system is communicated with the flue gas outlet of the engine; the flue gas pressurization system is connected with the engine, and the flue gas pressurization system is connected with the waste heat recovery heat exchange system; the outlet of the waste heat recovery heat exchange system is sequentially connected with the cooling system and the purification filtration system; the inlet of the gas mixing system is connected with the second flow outlet of the waste heat recovery heat exchange system and the outlet of the flue gas pressurization system respectively; the inlet of the flow regulation control system is connected with the flue gas pressurization system, and the outlet is connected with the waste heat recovery heat exchange system and the gas mixing system respectively. The scheme is to use the flue gas generated by the engine in the self-power system to pressurize and then perform oil extraction operation.

[0005] For example, the patent document with the Chinese patent application number CN202022146787.6 and the publication date of August 13, 2021 discloses a high-temperature flue gas direct purification pressurization system, which comprises: a graphene floating film purifier, a low-pressure high-temperature flue gas inlet and a low-pressure high-temperature purified gas outlet are arranged on the graphene floating film purifier; a high-temperature flue gas pressurizer, a low-pressure high-temperature purified gas inlet and a high-pressure high-temperature purified gas outlet are arranged on the high-temperature flue gas pressurizer; and a low-pressure high-temperature gas pipe, one end of the low-pressure high-temperature gas pipe is connected with the low-pressure high-temperature purified gas outlet, and the other end is connected with the low-pressure high-temperature purified gas inlet. The scheme is also to compress the flue gas and use it as a power source for other operations.

[0006] However, the existing flue gas pressurization system usually adopts one-time compression in actual use, which is easy to cause large load to the compressor head, increase damage to the head, and even if multi-stage compression is adopted, the gas pressure fluctuation still has great impact on the head structure, thereby affecting the service life of each structure. SUMMARY

[0007] 1. Problem to be solved

[0008] In view of the problem that the existing flue gas pressurization system is easy to cause large gas pressure fluctuation impact on the compressor head structure in actual use, thereby affecting the service life, the utility model provides a flue gas high-pressure pressurization system, which can effectively reduce the gas pressure fluctuation in the pressurization system and improve the service life of the pressurization system by improving the gas pipeline structure of the pressurization system.

[0009] 2. Technical scheme

[0010] In order to solve the above problem, the utility model adopts the following technical scheme.

[0011] A flue gas high-pressure pressurization system, comprising a compression main machine and a main motor for driving the compression main machine to work, further comprising a first-stage gas inlet manifold, a first-stage gas outlet manifold, a second-stage gas inlet manifold, a second-stage gas outlet manifold, a third-stage gas inlet manifold, a third-stage gas outlet manifold, a fourth-stage gas inlet manifold and a fourth-stage gas outlet manifold.

[0012] The gas inlet end of the first-stage gas inlet manifold is connected with a gas inlet pipeline, and the gas outlet end is connected with the compression main machine; the gas inlet end of the first-stage gas outlet manifold is connected with the compression main machine, and the gas outlet end is connected with the gas inlet end of the second-stage gas inlet manifold; the gas outlet end of the second-stage gas inlet manifold is connected with the compression main machine; the gas inlet end of the second-stage gas outlet manifold is connected with the compression main machine, and the gas outlet end is connected with the gas inlet end of the third-stage gas inlet manifold; the gas outlet end of the third-stage gas inlet manifold is connected with the compression main machine; the gas inlet end of the fourth-stage gas inlet manifold is connected with the compression main machine, and the gas outlet end is connected with the gas inlet end of the fourth-stage gas outlet manifold; and the gas outlet end of the fourth-stage gas outlet manifold is connected with a gas outlet pipeline.

[0013] As a further improvement of the technical scheme, the utility model further comprises a cooler; the first-stage gas outlet manifold is connected with the second-stage gas inlet manifold through the cooler; the second-stage gas outlet manifold is connected with the third-stage gas inlet manifold through the cooler; the third-stage gas outlet manifold is connected with the fourth-stage gas inlet manifold through the cooler; and the fourth-stage gas outlet manifold is connected with the gas outlet pipeline through the cooler.

[0014] As a further improvement of the technical scheme, a first-stage gas inlet filter is arranged between the gas inlet pipeline and the first-stage gas inlet manifold.

[0015] As a further improvement of the technical scheme, a third-stage gas inlet filter is arranged between the third-stage gas inlet manifold and the cooler.

[0016] As a further improvement of the technical solution, a four-stage intake filter is arranged between the four-stage intake manifold and the cooler.

[0017] As a further improvement of the technical solution, a blowdown pipe is connected to blowdown outlets of the first-stage intake filter, the third-stage intake filter and the four-stage intake filter.

[0018] As a further improvement of the technical solution, an electromagnetic valve and a pneumatic valve are arranged on the blowdown pipe.

[0019] As a further improvement of the technical solution, an instrument air line is tapped from the intake pipe line, and the instrument air line provides an air source for devices in the supercharging system.

[0020] As a further improvement of the technical solution, a lubricating oil line is further arranged for providing lubricating oil for the piston main engine.

[0021] 3, beneficial effects

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] (1) The utility model relates to a flue gas high-pressure supercharging system, which is different from the one-stage compression mode of the prior art and is designed as four-stage compression, fully considers the compression ratios of the stages, effectively reduces the load on the compressor head, reduces the damage to the head, and through the arrangement of the exhaust manifold, the impact of the gas pressure on the head and other devices can be further reduced, and the service life of the supercharging system is improved.

[0024] (2) The utility model relates to a flue gas high-pressure supercharging system, which is different from the one-stage compression mode of the prior art and is designed as four-stage compression, fully considers the compression ratios of the stages, effectively reduces the load on the compressor head, reduces the damage to the head, and through the arrangement of the exhaust manifold, the impact of the gas pressure on the head and other devices can be further reduced, and the service life of the supercharging system is improved.

[0025] (3) The utility model relates to a flue gas high-pressure supercharging system, which is different from the one-stage compression mode of the prior art and is designed as four-stage compression, fully considers the compression ratios of the stages, effectively reduces the load on the compressor head, reduces the damage to the head, and through the arrangement of the exhaust manifold, the impact of the gas pressure on the head and other devices can be further reduced, and the service life of the supercharging system is improved.

[0026] (4) The utility model relates to a flue gas high-pressure supercharging system, which is different from the one-stage compression mode of the prior art and is designed as four-stage compression, fully considers the compression ratios of the stages, effectively reduces the load on the compressor head, reduces the damage to the head, and through the arrangement of the exhaust manifold, the impact of the gas pressure on the head and other devices can be further reduced, and the service life of the supercharging system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of the utility model supercharging system.

[0028] In the diagram: 1. Main motor; 2. Compressor; 3. Primary exhaust manifold; 4. Drainage pipe; 5. Primary intake manifold; 6. Primary intake filter; 7. Intake pipe; 8. Instrument air circuit; 9. Secondary intake manifold; 10. Secondary exhaust manifold; 11. Tertiary intake manifold; 12. Tertiary exhaust manifold; 13. Quaternary intake manifold; 14. Quaternary exhaust manifold; 15. Cooler; 16. Lubricating oil circuit; 17. Tertiary intake filter; 18. Quaternary intake filter. Detailed Implementation

[0029] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from its spirit and scope. The more detailed description of embodiments of the present invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to provide the best mode for carrying out the invention and sufficient to enable those skilled in the art to practice it. Therefore, the scope of the present invention is defined only by the appended claims.

[0030] Example 1

[0031] A high-pressure booster system for flue gas, such as Figure 1 As shown, it includes a compressor host 2, a main motor 1 that drives the compressor host 2, a first-stage intake manifold 5, a first-stage exhaust manifold 3, a second-stage intake manifold 9, a second-stage exhaust manifold 10, a third-stage intake manifold 11, a third-stage exhaust manifold 12, a fourth-stage intake manifold 13, and a fourth-stage exhaust manifold 14.

[0032] The primary intake manifold 5 has its intake end connected to the intake pipe 7 and its outlet end connected to the compressor 2. The primary exhaust manifold 3 has its intake end connected to the compressor 2 and its outlet end connected to the intake end of the secondary intake manifold 9, which in turn connects to the compressor 2. The secondary exhaust manifold 10 has its intake end connected to the compressor 2 and its outlet end connected to the intake end of the tertiary intake manifold 11, which in turn connects to the compressor 2. The quaternary intake manifold 13 has its intake end connected to the compressor 2 and its outlet end connected to the intake end of the quaternary exhaust manifold 14, which in turn connects to the outlet pipe.

[0033] Different from the one-time compression mode of the existing system, the embodiment is designed as four-stage compression, fully considers the pressure ratio of each stage, effectively reduces the load on the compressor head, reduces the damage to the head, and through the setting of the exhaust manifold, the impact of gas pressure on the head and other devices can be further reduced, and the service life of the supercharging system is improved.

[0034] At the same time, the supercharging system is also provided with a cooler 15. The first-stage exhaust manifold 3 is connected to the second-stage intake manifold 9 through the cooler 15, the second-stage exhaust manifold 10 is connected to the third-stage intake manifold 11 through the cooler 15, the third-stage exhaust manifold 12 is connected to the fourth-stage intake manifold 13 through the cooler 15, and the fourth-stage exhaust manifold 14 is connected to the exhaust pipeline through the cooler. By setting an intermediate cooler between each compression stage, the compressed gas can be first cooled isobarically after being compressed once to reduce the temperature before entering the next stage cylinder. The reduced temperature and increased density are beneficial to further compression of the gas and save energy consumption.

[0035] A first-stage intake filter 6 is installed between the intake pipeline 7 and the first-stage intake manifold 5, a third-stage intake filter 17 is installed between the third-stage intake manifold 11 and the cooler 15, and a fourth-stage intake filter 18 is installed between the fourth-stage intake manifold 13 and the cooler 15. The blowdown ports of the first-stage intake filter 6, the third-stage intake filter 17 and the fourth-stage intake filter 18 are connected to a blowdown pipeline 4 for blowdown through the blowdown pipeline 4. The blowdown pipeline 4 is provided with an electromagnetic valve and a pneumatic valve.

[0036] By setting filters before the first-stage, third-stage and fourth-stage compression, the impurities entering the head of the high-pressure area are reduced, especially the damage of impurities to the head under high-pressure compression conditions is reduced, and the need for high-precision filters before the final exhaust is avoided. The multiple filters are uniformly blown down through the blowdown pipeline, which simplifies the structural design of the system and makes blowdown control more convenient.

[0037] In addition, the intake pipeline 7 is tapped with an instrument air pipeline 8, which provides a gas source for the devices in the supercharging system. The instrument air pipeline 8 directly draws air through the intake pipeline, reducing the space cost of separately designing an instrument air pipeline. At the same time, the system is also provided with a lubricating oil pipeline 16 for providing lubricating oil for the piston main machine.

[0038] In summary, the flue gas high-pressure supercharging system of the embodiment can effectively reduce the gas pressure fluctuation in the supercharging system and improve the service life of the supercharging system by improving the gas pipeline structure of the supercharging system.

Claims

1. A flue gas high pressure supercharging system comprising a compression main (2) and a main motor (1) driving the operation of the compression main (2), characterized in that: It also comprises a first-stage intake manifold (5), a first-stage exhaust manifold (3), a second-stage intake manifold (9), a second-stage exhaust manifold (10), a third-stage intake manifold (11), a third-stage exhaust manifold (12), a fourth-stage intake manifold (13), and a fourth-stage exhaust manifold (14); The intake end of the first-stage intake manifold (5) is connected to an intake pipeline (7), and the exhaust end is connected to a compression host (2); the intake end of the first-stage exhaust manifold (3) is connected to the compression host (2), and the exhaust end is connected to the intake end of the second-stage intake manifold (9); the exhaust end of the second-stage intake manifold (9) is connected to the compression host (2); the intake end of the second-stage exhaust manifold (10) is connected to the compression host (2), and the exhaust end is connected to the intake end of the third-stage intake manifold (11); the exhaust end of the third-stage intake manifold (11) is connected to the compression host (2); the intake end of the fourth-stage intake manifold (13) is connected to the compression host (2), and the exhaust end is connected to the intake end of the fourth-stage exhaust manifold (14); and the exhaust end of the fourth-stage exhaust manifold (14) is connected to an exhaust pipeline.

2. A flue gas high pressure supercharging system according to claim 1, characterized in that: It also comprises a cooler (15); the first-stage exhaust manifold (3) is connected to the second-stage intake manifold (9) through the cooler (15); the second-stage exhaust manifold (10) is connected to the third-stage intake manifold (11) through the cooler (15); the third-stage exhaust manifold (12) is connected to the fourth-stage intake manifold (13) through the cooler (15); and the fourth-stage exhaust manifold (14) is connected to the exhaust pipeline through the cooler (15).

3. A flue gas high pressure supercharging system according to claim 2, characterized in that: A first-stage intake filter (6) is arranged between the intake pipeline (7) and the first-stage intake manifold (5).

4. A flue gas high pressure supercharging system according to claim 3, characterized in that: A third-stage intake filter (17) is arranged between the third-stage intake manifold (11) and the cooler (15).

5. A flue gas high pressure supercharging system according to claim 4, characterized in that: A fourth-stage intake filter (18) is arranged between the fourth-stage intake manifold (13) and the cooler (15).

6. A flue gas high pressure supercharging system according to claim 5, characterized in that: The exhaust port of the first-stage intake filter (6), the third-stage intake filter (17), and the fourth-stage intake filter (18) is connected to a blowdown pipeline (4).

7. A flue gas high pressure supercharging system according to claim 6, characterized in that: An electromagnetic valve and a pneumatic valve are arranged on the blowdown pipeline (4).

8. A flue gas high pressure supercharging system according to any one of claims 1-7, characterized in that: An instrument gas pipeline (8) is branched from the intake pipeline (7); the instrument gas pipeline (8) provides a gas source for devices in the supercharging system.

9. A flue gas high pressure supercharging system according to any one of claims 1-7, characterized in that: It also comprises a lubricating oil pipeline (16) for providing lubricating oil for a piston host.

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