Desulfurization separation device for natural gas

Abstract

The utility model discloses a desulfurization and separation device for natural gas, which comprises a barrel with a separation cavity and an exhaust pipe communicated with the separation cavity, the exhaust pipe is provided with a gas flow driving part, and the gas flow driving part is configured to be capable of driving desulfurized natural gas in the separation cavity to be exhausted to downstream equipment or a pipeline from the exhaust pipe; a mixing flow channel communicated with a natural gas source is arranged on the cylinder body; the atomizing nozzle is used for introducing an atomized desulfurizing agent into the mixing runner; the atomized desulfurizing agent and the natural gas can be fully mixed in the mixing flow channel to form a mixture; the outlet of the mixing flow channel is tangent to the barrel and communicates with the separation cavity, the mixture can enter the separation cavity in the tangential direction of the barrel, the mixture centrifugally moves in the separation cavity, and therefore reaction products, desulfurizer and natural gas in the mixture are effectively separated in the separation cavity.

Description

Technical Field

[0001] This utility model relates to the field of natural gas desulfurization technology, and in particular to a natural gas desulfurization separation device. Background Technology

[0002] Extracted natural gas typically contains hydrogen sulfide, which not only has many adverse effects on human health, the environment, and the quality and yield of natural gas, but also corrodes transportation pipelines. Therefore, desulfurization treatment is necessary for natural gas.

[0003] In existing technologies, liquid desulfurizing agents are typically injected into pipelines transporting natural gas. The hydrogen sulfide in the natural gas reacts chemically with the liquid desulfurizing agent inside the pipeline, thereby absorbing and separating the hydrogen sulfide from the natural gas.

[0004] However, insufficient mixing of liquid desulfurizer and natural gas leads to low utilization of the desulfurizer. In addition, the products generated by the reaction of desulfurizer with hydrogen sulfide, as well as the mixture of liquid desulfurizer and natural gas, result in greater gas flow resistance and make natural gas pipelines prone to scaling or blockage. Utility Model Content

[0005] This invention provides a natural gas desulfurization separation device for desulfurizing natural gas and improving the utilization rate of the desulfurizing agent; at the same time, the reaction products generated by the desulfurization reaction are separated from the natural gas, thereby reducing gas flow resistance and preventing scaling or blockage of natural gas pipelines.

[0006] This utility model provides a natural gas desulfurization separation device, which includes a cylinder with a separation chamber and an exhaust pipe communicating with the separation chamber. An airflow driving component is provided on the exhaust pipe, and the airflow driving component is configured to drive the desulfurized natural gas in the separation chamber to be discharged from the exhaust pipe to downstream equipment or pipelines.

[0007] The cylinder has a mixing channel connected to a natural gas source; it also includes:

[0008] Atomizing nozzle is used to introduce atomized desulfurizing agent into the mixing channel;

[0009] The desulfurizing agent and natural gas can be mixed in the mixing channel to form a mixture; the outlet of the mixing channel is tangential to the cylinder and communicates with the separation chamber, and the mixture can enter the separation chamber along the tangential direction of the cylinder.

[0010] As one implementation method, the natural gas desulfurization separation unit further includes:

[0011] The distributor has several branch channels formed on it. The inlet of each branch channel is connected to the mixing channel, and the outlet of each branch channel is tangent to the cylinder and connected to the separation chamber.

[0012] In one embodiment, the distributor extends along the axis of the cylinder, and the plurality of branch channels are evenly spaced along the circumference of the distributor;

[0013] The outer periphery of the distributor is also surrounded by a swirling channel, and the mixing channel, swirling channel, branch channel and separation chamber are connected in sequence.

[0014] In one embodiment, the diverter is cylindrical and coaxially arranged with the cylinder.

[0015] In one embodiment, the outer wall of the vortex channel is an Archimedean spiral.

[0016] In one embodiment, the intake end of the exhaust pipe is formed with a reducing pipe;

[0017] Along the flow direction of the desulfurized natural gas in the exhaust pipe, the reducing pipe gradually narrows.

[0018] In one embodiment, the variable diameter tube is tapered or flared.

[0019] In one embodiment, the variable diameter pipe is coaxially arranged with the cylindrical body.

[0020] As one implementation, a settling zone is formed inside the cylinder and below the separation chamber along the direction of gravity;

[0021] The inner wall of the settling zone gradually narrows, and a collection box is connected to the narrowing end of the settling zone.

[0022] As one implementation, a discharge valve is provided at the outlet of the collection box; and / or,

[0023] The collection box is equipped with a vibrator.

[0024] Compared with the prior art, the advantages of this utility model are:

[0025] 1. The outlet of the mixing channel is tangential to the inner wall of the cylinder and is connected to the separation chamber. The mixture can enter the separation chamber tangentially along the cylinder. The mixture undergoes centrifugal motion in the separation chamber, which improves the turbulence effect of the mixture, thereby effectively separating the reaction products, desulfurizing agent and natural gas in the mixture: the relatively dense and heavy reaction products and desulfurizing agent can be separated from the natural gas and settle; while the lighter natural gas after desulfurization can enter the exhaust pipe under the drive of the airflow drive and be discharged to downstream equipment or pipelines through the exhaust pipe.

[0026] 2. The atomizing nozzle is used to introduce atomized desulfurizing agent into the mixing channel. After being atomized, the liquid desulfurizing agent is injected into the mixing channel through the atomizing nozzle, so that the desulfurizing agent and natural gas are fully mixed in the mixing channel to form a mixture, which improves the mixing effect, increases the utilization rate of desulfurizing agent and reduces the amount of desulfurizing agent used, thereby reducing the gas resistance of natural gas to a certain extent.

[0027] 3. In this embodiment, the atomizing nozzle is installed on the air inlet pipe downstream of the first delivery pipe. Compared with installing the nozzle on the natural gas delivery pipe, this can reduce the gas resistance in the first delivery pipe, avoid scaling or blockage in the first delivery pipe, and reduce maintenance costs.

[0028] 4. After being split by several branch channels on the distributor, the mixture enters the separation chamber tangentially along the cylinder, which improves the effect of centrifugal motion and causes the mixture to form a "vortex" in the separation chamber, further improving the disturbance effect and ensuring the effective separation of reaction products, desulfurizing agent and natural gas.

[0029] 5. The distributor extends along the axis of the cylinder, with several branch channels evenly spaced around its circumference; a swirl channel is also arranged around the outer periphery of the distributor, and the mixing channel, swirl channel, branch channel, and separation chamber are connected in sequence. The swirl channel extends the flow path of the mixture, ensuring that the desulfurizing agent and natural gas are fully mixed.

[0030] 6. Multiple through holes are formed on the wall surface of the exhaust pipe near the fan, and the multiple through holes are arranged at intervals along the circumference of the exhaust pipe.

[0031] When the desulfurized natural gas flowing through the axial flow blades contains reaction products, the reaction products will collide with the axial flow blades and be thrown out of the through holes by the high-speed rotating axial flow blades, and then flow back into the separation chamber for sedimentation, further improving the purity of the natural gas.

[0032] 7. A vibrator is also installed on the outer wall of the collection box to vibrate the collection box. The vibrator can be an eccentric vibrator. During the process of opening the discharge valve to unload materials, the vibrator can be turned on at the same time to make the collection box vibrate, thereby improving the unloading efficiency of the collection box. Attached Figure Description

[0033] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of a natural gas desulfurization separation unit;

[0035] Figure 2 yes Figure 1 Sectional view at point AA;

[0036] Figure 3 yes Figure 1 A top view of a natural gas desulfurization and separation unit.

[0037] Figure label:

[0038] 1. Cylinder body; 11. Separation chamber; 12. Settling zone;

[0039] 2. Atomizing nozzle;

[0040] 3. Intake pipe; 31. Mixing channel;

[0041] 4. Swirl channel;

[0042] 5. Diverter; 51. Branch channel;

[0043] 61. Exhaust pipe; 62. Airflow drive component; 63. Reducer; 64. Through hole;

[0044] 71. Collection box; 72. Discharge valve; 73. Vibrator;

[0045] 100. First conveying pipe;

[0046] 200. Second delivery pipe. Detailed Implementation

[0047] The present invention will be further described below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of a natural gas desulfurization separation unit. Figure 2 yes Figure 1 The sectional view at point AA; it should be noted that... Figure 2 The arrows in the diagram indicate the flow direction of the mixture of natural gas and desulfurizing agent; Figure 3 This is a top view of a natural gas desulfurization and separation unit.

[0049] This utility model provides a natural gas desulfurization separation device, which includes a cylinder 1 with a separation chamber 11, an atomizing nozzle 2, and an exhaust pipe 61.

[0050] The cylinder 1 is provided with a mixing channel 31, and the inlet of the mixing channel 31 is connected to the natural gas source. The atomizing nozzle 2 is used to introduce atomized desulfurizing agent into the mixing channel 31. After being atomized, the liquid desulfurizing agent is injected into the mixing channel 31 through the atomizing nozzle 2, so that the desulfurizing agent and natural gas are fully mixed in the mixing channel 31 to form a mixture, which improves the mixing effect, can improve the utilization rate of desulfurizing agent and reduce the amount of desulfurizing agent used, thereby reducing the gas resistance of natural gas to a certain extent.

[0051] The exhaust pipe 61 is connected to the separation chamber 11, and an airflow drive component 62 is provided on the exhaust pipe 61. The airflow drive component 62 is configured to drive the desulfurized natural gas in the separation chamber 11 into the exhaust pipe 61 and discharge it to downstream equipment or pipelines.

[0052] The outlet of the mixing channel 31 is tangential to the inner wall of the cylinder 1, and the outlet of the mixing channel 31 is connected to the separation chamber 11. The mixture can enter the separation chamber 11 tangentially along the cylinder 1. The mixture undergoes centrifugal motion in the separation chamber 11, which improves the turbulence effect of the mixture, thereby enabling the reaction products, desulfurizing agent and natural gas in the mixture to be effectively separated in the separation chamber 11: the reaction products and desulfurizing agent with relatively high density and heavy mass can be separated from the natural gas and settle; while the natural gas with lighter mass after desulfurization can enter the exhaust pipe 61 under the drive of the airflow drive 62, and be discharged to downstream equipment or pipelines through the exhaust pipe 61.

[0053] In one embodiment, an air inlet pipe 3 is connected to the top of the cylinder 1. The air inlet end of the air inlet pipe 3 is connected to the first conveying pipe 100 for transporting natural gas. The outlet end of the air inlet pipe 3 extends along the tangential direction of the cylinder 1 and is connected to the cylinder 1. The mixing channel 31 is defined by the air inlet pipe 3.

[0054] The storage tank for storing the desulfurizing agent, the atomizing device for atomizing the desulfurizing agent, and the inlet end of the atomizing nozzle 2 are connected in sequence.

[0055] In this embodiment, the atomizing nozzle 2 is installed on the air inlet pipe 3 downstream of the first delivery pipe 100. Compared with installing the nozzle on the natural gas delivery pipe, this can reduce the gas resistance in the first delivery pipe 100, avoid scaling or blockage in the first delivery pipe 100, and reduce maintenance costs.

[0056] The outlet of the atomizing nozzle 2 faces the gas delivery direction of the first delivery pipe 100, which can improve the mixing effect of the desulfurizing agent and natural gas.

[0057] The natural gas desulfurization separation device also includes a distributor 5, which has several branch channels 51. The inlet of each branch channel 51 is connected to the mixing channel 31, and the outlet of each branch channel 51 is tangent to the cylinder 1 and connected to the separation chamber 11.

[0058] After being split by several branch channels 51 on the distributor 5, the mixture enters the separation chamber 11 tangentially along the cylinder 1, which improves the effect of centrifugal motion and causes the mixture to form a "vortex" in the separation chamber 11, further improving the disturbance effect and ensuring the effective separation of reaction products, desulfurizing agent and natural gas.

[0059] In this embodiment, the distributor 5 extends along the axis of the cylinder 1, and several branch channels 51 are evenly spaced along the circumference of the distributor 5; a swirl channel 4 is also arranged around the outer periphery of the distributor 5, and the mixing channel 31, the swirl channel 4, the branch channels 51 and the separation chamber 11 are connected in sequence. The arrangement of the swirl channel 4 extends the flow path of the mixture, ensuring that the desulfurizing agent and natural gas are fully mixed.

[0060] In a preferred embodiment, the diverter 5 is cylindrical and coaxially arranged with the cylinder 1. The outer wall of the swirling channel 4 is an Archimedean spiral.

[0061] The exhaust pipe 61 will be described below.

[0062] The outlet end of the exhaust pipe 61 is connected to the flange of the second conveying pipe 200 for transporting desulfurized natural gas. The inlet end of the exhaust pipe 61 extends into the cylinder 1 from the sealing cover at the top of the cylinder 1 and extends axially along the cylinder 1 to the separation chamber 11. The exhaust pipe 61 is coaxially arranged with the cylinder 1 to improve the uniformity of desulfurized natural gas emission in the separation chamber 11.

[0063] To facilitate the entry of natural gas from the separation chamber 11 into the exhaust pipe 61, a reducer 63 is fixedly installed at the inlet end of the exhaust pipe 61; the reducer 63 gradually narrows along the flow direction of the desulfurized natural gas in the exhaust pipe 61.

[0064] The reducer 63 can be conical or flared.

[0065] The reducer 63, cylinder 1 and exhaust pipe 61 are coaxially arranged, with the reducer 63 located below the distributor 5.

[0066] The airflow drive component 62 can be an electric fan, which is positioned between the reducer 63 and the exhaust pipe 61. The fan blades are axial flow blades and are mounted on a rotating shaft via bearings; the rotating shaft is coaxial with the exhaust pipe 61.

[0067] Multiple through holes 64 are formed on the wall surface of the exhaust pipe 61 near the fan, and the multiple through holes 64 are arranged at intervals along the circumference of the exhaust pipe 61.

[0068] When the desulfurized natural gas flowing through the axial flow blades contains reaction products, the reaction products will collide with the axial flow blades and be thrown out through the through hole 64 by the high-speed rotating axial flow blades, and flow back into the separation chamber 11 for settling, further improving the purity of the natural gas.

[0069] Since the relatively dense reaction products and desulfurizing agents can be separated from the natural gas and settle after swirling, a collection box 71 is also provided at the bottom of the cylinder 1 in this embodiment in order to collect the settled substances.

[0070] Specifically, a settling zone 12 is formed inside the cylinder 1 and below the separation chamber 11 along the direction of gravity; the inner wall of the settling zone 12 gradually narrows from top to bottom, and the feed inlet of the collection box 71 is connected to the narrowing end of the settling zone 12. The settling zone 12 is defined by a funnel-shaped structure.

[0071] A discharge valve 72 is installed at the outlet of the collection box 71. The discharge valve 72 is opened intermittently to clean the sulfur-containing reaction products in the collection box 71. The discharge valve 72 can be a slide gate valve, or other types of valves.

[0072] A vibrator 73 is also installed on the outer wall of the collection box 71 to vibrate the collection box 71. The vibrator 73 can be eccentric. During the process of opening the discharge valve 72 to unload materials, the vibrator 73 can be turned on at the same time to make the collection box 71 vibrate, thereby improving the unloading efficiency of the collection box 71.

[0073] The basic working principle of the natural gas desulfurization separation unit in this embodiment is as follows:

[0074] Natural gas is introduced into the mixing channel 31 through the first delivery pipe 100, and atomized desulfurizing agent is introduced into the mixing channel 31 through the atomizing nozzle 2. The desulfurizing agent and natural gas are mixed in the mixing channel 31 to form a mixture.

[0075] The mixture enters the swirl channel 4, where the desulfurizing agent and natural gas are fully mixed and reacted. Then, the mixture is split by the distributor 5 and flows along the tangential direction of the cylinder 1 into the separation chamber 11, forming a "swirl".

[0076] After centrifugal motion, the relatively dense and heavy reaction products and desulfurizing agents in the mixture can be separated from the natural gas and settled. The settled reaction products and desulfurizing agents flow into the collection box 71. The lighter natural gas after desulfurization can enter the exhaust pipe 61 driven by the electric fan and be discharged to downstream equipment or pipelines through the exhaust pipe 61.

[0077] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A desulfurization separation device for natural gas, characterized in that, It includes a cylinder with a separation chamber and an exhaust pipe communicating with the separation chamber. The exhaust pipe is provided with an airflow drive component, which is configured to drive the desulfurized natural gas in the separation chamber to be discharged from the exhaust pipe to downstream equipment or pipelines. The cylinder is provided with a mixing channel connected to a natural gas source; it also includes: Atomizing nozzle is used to introduce atomized desulfurizing agent into the mixing channel; The desulfurizing agent and natural gas can be mixed in the mixing channel to form a mixture; the outlet of the mixing channel is tangential to the cylinder and communicates with the separation chamber, and the mixture can enter the separation chamber along the tangential direction of the cylinder.

2. The natural gas desulfurization separation device according to claim 1, characterized in that, Also includes: The distributor has several branch channels formed on it. The inlet of each branch channel is connected to the mixing channel, and the outlet of each branch channel is tangent to the cylinder and connected to the separation chamber.

3. The natural gas desulfurization separation device according to claim 2, characterized in that, The distributor extends along the axis of the cylinder, and the plurality of branch channels are evenly spaced along the circumference of the distributor. The outer periphery of the distributor is also surrounded by a swirling channel, and the mixing channel, swirling channel, branch channel and separation chamber are connected in sequence.

4. The natural gas desulfurization separation device according to claim 3, characterized in that, The distributor is cylindrical and is coaxially arranged with the cylinder.

5. The natural gas desulfurization separation device according to claim 4, characterized in that, The outer wall of the vortex channel is an Archimedean spiral.

6. The natural gas desulfurization separation device according to any one of claims 1-5, characterized in that, The intake end of the exhaust pipe has a reducing pipe; Along the flow direction of the desulfurized natural gas in the exhaust pipe, the reducing pipe gradually narrows.

7. The natural gas desulfurization separation device according to claim 6, characterized in that, The reducing pipe is tapered or flared.

8. The natural gas desulfurization separation device according to claim 6, characterized in that, The reducing pipe is coaxially arranged with the cylinder.

9. The natural gas desulfurization separation device according to claim 1, characterized in that, Along the direction of gravity, a settling zone is formed inside the cylinder and below the separation chamber; The inner wall of the settling zone gradually narrows from top to bottom, and a collection box is connected to the narrowing end of the settling zone.

10. The natural gas desulfurization separation device according to claim 9, characterized in that, The collection box is equipped with a discharge valve at its outlet; and / or, The collection box is equipped with a vibrator.

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