Natural gas desulfurization and purification treatment device

Abstract

The utility model relates to the technical field of natural gas desulfurization, in particular to a natural gas desulfurization and purification treatment device which comprises a desulfurization tower, a natural gas conveying pipe fixedly connected to the top of the desulfurization tower, connecting rods fixedly connected to the left side and the right side of the upper portion in the desulfurization tower, and a compressor fixedly connected to the ends, away from the desulfurization tower, of the connecting rods. A spiral pipe is fixedly connected to the output end of the compressor, air outlet holes are formed in the inner side of the spiral pipe, and hollow bins are fixedly connected to the left and right ends above the desulfurization tower; through design cooperation, natural gas conveyed in the natural gas conveying pipe can be spirally and uniformly distributed in the desulfurization tower, absorbents capable of spraying mist are arranged on the left side and the right side in the desulfurization tower and make contact with natural gas from bottom to top, and it is avoided that after the natural gas is injected into the desulfurization tower from top to bottom, the natural gas cannot flow into the desulfurization tower. And because the density is smaller than the air density, the gas-liquid separator floats to the upper part in the desulfurization tower and is difficult to contact with the absorbent.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas desulfurization, in particular to a natural gas desulfurization and purification treatment device. Background Art

[0002] Natural gas desulfurization refers to the process of removing hydrogen sulfide and other sulfur-containing compounds from natural gas, which is crucial for environmental protection, equipment protection and improvement of natural gas quality.

[0003] It is found that the publication (announcement) number: CN209759402U discloses a safe liquid removal and desulfurization purification treatment device for high-sulfur natural gas wells. This technology discloses "a safe liquid removal and desulfurization purification treatment device for high-sulfur natural gas wells, including a desulfurization tank and a gas-liquid separation tank. The desulfurization tank is communicated with the gas-liquid separation tank, and natural gas sequentially passes through the desulfurization tank and the gas-liquid separation tank; the desulfurization tank has a cavity, a partition is arranged in the cavity, the partition is fixedly connected with the inner wall of the desulfurization tank, and the desulfurization tank is divided into a first tank body and a second tank body from top to bottom by the partition. An air inlet, an atomization device and a spiral flow guide are sequentially arranged in the first tank body from top to bottom. The inlet of the spiral flow guide is communicated with the cavity of the first tank body, and the outlet of the spiral flow guide is communicated with the cavity of the second tank body. The second tank body has a liquid inlet, a liquid outlet and a gas outlet. A desulfurization liquid is contained in the second tank body, and the outlet of the spiral flow guide is located below the liquid level. The desulfurization liquid in the second tank body and the atomization device cooperate to improve the desulfurization efficiency of the desulfurization tank".

[0004] When the existing desulfurization tower is in use, natural gas is injected into the desulfurization tower from top to bottom, and then the natural gas is sprayed by an absorbent spray head arranged in the desulfurization tower, aiming to make the absorbent fully contact with the natural gas. However, the density of natural gas is smaller than that of air, so the natural gas will quickly accumulate above the inside of the desulfurization tower after being injected, and it is difficult to directly reach the bottom of the desulfurization tower during injection, resulting in insufficient contact between the absorbent and the natural gas.

[0005] To solve the above problems, a natural gas desulfurization and purification treatment device is proposed in this application. Summary of the Utility Model

[0006] To solve the problems proposed in the above background art, the utility model provides a natural gas desulfurization and purification treatment device, which can make the contact between natural gas and the absorbent more sufficient and reduce the probability of the atomizing nozzle for spraying the absorbent being blocked by impurities.

[0007] To achieve the above object, the present utility model adopts the following technical solution: a natural gas desulfurization and purification treatment device, including a desulfurization tower. A natural gas delivery pipe is fixedly connected to the top of the desulfurization tower. Connecting rods are fixedly connected to the upper left and right sides inside the desulfurization tower. A compressor is fixedly connected to one end of the connecting rod away from the desulfurization tower. A spiral pipe is fixedly connected to the output end of the compressor. Air outlet holes are provided inside the spiral pipe. Hollow bins are fixedly connected to the upper left and right ends above the desulfurization tower. Atomizing nozzles are provided at one end of the hollow bin located inside the desulfurization tower. An absorbent delivery pipe is fixedly connected to the outer end face of the hollow bin. A bottom plate is fixedly connected to the lower part inside the desulfurization tower. A motor is fixedly connected to the middle of the bottom of the bottom plate. A stirring blade is fixedly connected to the output end of the motor.

[0008] Preferably, for the natural gas desulfurization and purification treatment device of the present utility model, one end of the natural gas delivery pipe located inside the desulfurization tower is fixedly connected to the input end of the compressor. The outer side of the spiral pipe contacts the inner wall of the desulfurization tower. The center of the bottom of the stirring blade contacts the center of the top of the bottom plate. The bottom of the motor is fixedly connected to the bottom end inside the desulfurization tower. The natural gas conveyed in the natural gas delivery pipe can be spirally and evenly distributed inside the desulfurization tower, and the atomized absorbent sprayed from the left and right sides inside the desulfurization tower can contact the natural gas from bottom to top, thereby improving the contact sufficiency between the absorbent and the natural gas to a certain extent.

[0009] Preferably, for the natural gas desulfurization and purification treatment device of the present utility model, the number of air outlet holes inside the spiral pipe is several, and the air outlet holes are evenly distributed on the spiral inner side surface of the spiral pipe. The diameter of the air outlet hole is one centimeter. After the natural gas is compressed by the compressor, it can be evenly sprayed from the inside of the spiral pipe arranged from top to bottom into the desulfurization tower, improving the uniform distribution of the natural gas inside the desulfurization tower.

[0010] Preferably, for the natural gas desulfurization and purification treatment device of the present utility model, the inside of the hollow bin is hollow, and the atomizing nozzles are evenly distributed above the left and right sides inside the desulfurization tower. The positions of the atomizing nozzles are on the left and right sides directly above the spiral pipe, so that the atomized absorbent sprayed by the atomizing nozzles can contact the natural gas from bottom to top.

[0011] Preferably, for the natural gas desulfurization and purification treatment device of the present utility model, the motor is connected to the stirring blade through an output shaft. A circular through hole is provided in the middle of the bottom plate, and the diameter of the circular through hole matches the cross-sectional diameter of the output shaft. The motor drives the stirring blade to rotate, enabling the natural gas and the absorbent to be fully contacted and mixed.

[0012] Preferably, in the natural gas desulfurization and purification treatment device of the present utility model, a frame is fixedly connected in the middle of the hollow chamber, and a filter screen is fixedly connected inside the frame, which can filter the absorbent conveyed by the absorbent conveying pipe in the hollow chamber and block impurities therein.

[0013] Preferably, in the natural gas desulfurization and purification treatment device of the present utility model, the overall shape and size of the frame match the internal shape and size of the longitudinal section of the hollow chamber, and the pores of the filter screen match the aperture of the atomizing nozzle, effectively preventing impurities from being conveyed into the hollow chamber by the absorbent conveying pipe and then sprayed out through the atomizing nozzle. The volume of the impurities may be larger than the aperture of the atomizing nozzle, resulting in the situation of the atomizing nozzle being blocked by impurities, and to a certain extent, improving the service life and maintenance interval of the atomizing nozzle.

[0014] The present utility model has the following beneficial effects:

[0015] In the natural gas desulfurization and purification treatment device designed by the present utility model, through the designed cooperation, the device can make the natural gas conveyed in the natural gas conveying pipe be in a spiral shape and evenly distributed in the desulfurization tower. An air outlet hole is arranged around the inner side of the spiral pipe, and the natural gas is injected into the desulfurization tower from the air outlet hole. Since the density of the natural gas is less than that of the air, the natural gas will float towards the top of the desulfurization tower. Atomizing absorbents are arranged on the left and right sides inside the desulfurization tower and sprayed downward to contact the natural gas rising from the bottom up. After the absorbent and the natural gas fall on the bottom plate at the bottom of the desulfurization tower, the stirring blades are rotated by the motor to make the natural gas and the absorbent fully contact and mix, avoiding the situation that after the natural gas is injected into the desulfurization tower from the top down, it is difficult to contact the absorbent because its density is less than that of the air and it floats upward inside the desulfurization tower, and to a certain extent, improving the contact sufficiency between the natural gas and the absorbent.

[0016] In the natural gas desulfurization and purification treatment device designed by the present utility model, through the cooperation of the frame and the filter screen, the device can filter the absorbent conveyed by the absorbent conveying pipe in the hollow chamber and block impurities therein, effectively preventing impurities from being conveyed into the hollow chamber by the absorbent conveying pipe and then sprayed out through the atomizing nozzle. The volume of the impurities may be larger than the aperture of the atomizing nozzle, resulting in the situation of the atomizing nozzle being blocked by impurities, and to a certain extent, improving the service life and maintenance interval of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 This is a three-dimensional longitudinal sectional structure diagram of the desulfurization tower of the present utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the spiral tube of the present utility model;

[0021] Figure 4 This is a three-dimensional longitudinal sectional structure diagram of the frame of the present utility model.

[0022] Legend description:

[0023] 1. Desulfurization tower; 2. Natural gas transmission pipe; 3. Hollow bin; 4. Absorbent transmission pipe; 5. Compressor; 6. Connecting rod; 7. Spiral tube; 8. Atomizing nozzle; 9. Bottom plate; 10. Motor; 11. Stirring blade; 12. Air outlet; 13. Frame; 14. Filter screen. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 - 4 shown;

[0027] The natural gas desulfurization and purification treatment device includes a desulfurization tower 1.

[0028] In this implementation: It is found through inquiry that the publication (announcement) number: CN209759402U discloses a high-sulfur natural gas well safety liquid removal and desulfurization purification treatment device. To solve the existing problems in this prior art, as disclosed in the above background art, "When the existing desulfurization tower is in use, natural gas is injected into the desulfurization tower from top to bottom, and then the natural gas is sprayed by the absorbent spray head arranged in the desulfurization tower. The purpose is to make the absorbent fully contact with the natural gas. However, the density of natural gas is smaller than that of air. Therefore, after the natural gas is injected into the desulfurization tower, it will quickly accumulate above the interior of the desulfurization tower and it is very difficult to directly reach the bottom of the desulfurization tower during injection, resulting in insufficient contact between the absorbent and the natural gas." In combination, this problem is obviously an existing and difficult-to-solve problem. In view of this, to solve this technical problem, a spiral tube 7 and a filter screen 14 are added to this application document;

[0029] Furthermore:

[0030] As Figures 1 to 4 shown:

[0031] In combination with the above content: a natural gas desulfurization and purification treatment device comprises a desulfurization tower 1, a natural gas transmission pipe 2 is fixed to the top of the desulfurization tower 1 through a flange, connecting rods 6 are welded on the left and right sides of the upper part of the desulfurization tower 1, and the end of the connecting rod 6 away from the desulfurization tower 1 is fixed to the compressor 5 by bolts, and the output end of the compressor 5 is fixed with a spiral tube 7 through a flange, and an air outlet 12 is provided inside the spiral tube 7, and a hollow bin 3 is welded on the left and right ends of the upper part of the desulfurization tower 1, and an atomizing nozzle 8 is arranged at one end of the hollow bin 3 located inside the desulfurization tower 1, and the outer end surface of the hollow bin 3 is connected to the absorbent transmission pipe 4 through a flange, a bottom plate 9 is welded at the lower part of the desulfurization tower 1, and a motor 10 is fixed to the middle of the bottom of the bottom plate 9 by bolts, and a stirring blade 11 is welded at the output end of the motor 10, and the end of the natural gas transmission pipe 2 located inside the desulfurization tower 1 is fixedly connected to the input end of the compressor 5, the outer side of the spiral tube 7 is in contact with the inner wall of the desulfurization tower 1, the bottom center of the stirring blade 11 is in contact with the top center of the bottom plate 9, and the bottom of the motor 10 is fixedly connected to the bottom end of the desulfurization tower 1.

[0032] In this embodiment: the natural gas transported in the natural gas transmission pipe 2 can be spirally distributed evenly in the desulfurization tower 1, and an absorbent that can spray mist is arranged on the left and right sides of the desulfurization tower 1 to contact the natural gas from bottom to top from top to bottom, thereby improving the contact sufficiency between the absorbent and the natural gas to a certain extent.

[0033] In an optional embodiment, there are a plurality of air outlet holes 12 on the inner side of the spiral tube 7 , and the air outlet holes 12 are evenly distributed on the spiral inner side of the spiral tube 7 , and the diameter of the air outlet holes 12 is one centimeter.

[0034] In this embodiment, after being compressed by the compressor 5 , the natural gas is uniformly sprayed out from the inner side of the spiral tube 7 arranged from top to bottom into the desulfurization tower 1 , thereby improving the uniformity of the distribution of the natural gas in the desulfurization tower 1 .

[0035] In an optional embodiment: the interior of the hollow bin 3 is hollow, and the atomizing nozzles 8 are distributed above the left and right sides of the desulfurization tower 1 , and the atomizing nozzles 8 are located on the left and right sides directly above the spiral tube 7 .

[0036] In this embodiment, the absorbent in a mist form sprayed out by the atomizing nozzle 8 can be allowed to contact the natural gas from bottom to top from top to bottom.

[0037] In an optional embodiment: the motor 10 is connected to the stirring blade 11 through an output shaft, a circular through hole is opened in the middle of the bottom plate 9, and the diameter of the circular through hole matches the cross-sectional diameter of the output shaft.

[0038] In this embodiment, the motor 10 drives the stirring blade 11 to rotate, so that the natural gas and the absorbent are fully contacted and mixed.

[0039] According to the above, in order to reduce the probability of the atomizing nozzle 8 for spraying the absorbent being blocked by impurities, it further includes a middle welding frame 13 inside the hollow bin 3, and a filter screen 14 is arranged inside the frame 13.

[0040] In this embodiment: The absorbent conveyed by the absorbent conveying pipe 4 in the hollow bin 3 can be filtered to block the impurities therein.

[0041] In an alternative embodiment: The overall shape and size of the frame 13 are all matched with the internal shape and size of the longitudinal section of the hollow bin 3, and the pores of the filter screen 14 are matched with the aperture of the atomizing nozzle 8.

[0042] In this embodiment: It effectively avoids the situation that impurities are conveyed from the absorbent conveying pipe 4 into the hollow bin 3 and then sprayed out through the atomizing nozzle 8. The volume of the impurities may be larger than the aperture of the atomizing nozzle 8, resulting in the blockage of the atomizing nozzle 8. To a certain extent, it improves the service life and maintenance interval of the atomizing nozzle 8.

[0043] The working principle and usage process of the present utility model: When in use, turn on the compressor 5 and the motor 10. At this time, natural gas is injected into the compressor 5 above the interior of the desulfurization tower 1 through the natural gas conveying pipe 2. The compressor 5 fixed by the two connecting rods 6 compresses the natural gas and then injects it into the spiral pipe 7 at the output end of the compressor 5. After the compressed natural gas enters the spiral pipe 7, it is injected into the interior of the desulfurization tower 1 from the air outlet 12. While the natural gas enters the desulfurization tower 1, the absorbent is also injected into the hollow bin 3 through the absorbent conveying pipe 4. A filter screen 14 fixed by a frame 13 is arranged in the hollow bin 3. After the absorbent passes through the filter screen 14, the impurities are blocked by the filter screen 14, and the filtered absorbent is sprayed into the interior of the desulfurization tower 1 through the atomizing nozzle 8. At this time, the natural gas sprayed from the upper inner side of the spiral pipe 7 directly contacts the atomized absorbent sprayed horizontally. The natural gas follows the absorbent and falls together above the bottom plate 9 below the interior of the desulfurization tower 1, while the natural gas sprayed from the lower inner side of the spiral pipe 7 floats upward inside the desulfurization tower 1 because its density is less than the density of air and will also contact the atomized absorbent. At this time, the absorbent in contact with the natural gas accumulates on the top of the bottom plate 9, and the motor 10 drives the stirring blade 11 to rotate through the output shaft, which can make the natural gas and the absorbent fully contact and mix.

[0044] Finally, it should be noted that: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Natural gas desulfurization and purification treatment device, including a desulfurization tower (1), characterized in that: The top of the desulfurization tower (1) is fixedly connected with a natural gas delivery pipe (2). On the left and right sides above the interior of the desulfurization tower (1), there are fixedly connected connecting rods (6). One end of the connecting rod (6) away from the desulfurization tower (1) is fixedly connected with a compressor (5). The output end of the compressor (5) is fixedly connected with a spiral pipe (7). An air outlet hole (12) is opened on the inner side of the spiral pipe (7). On the left and right ends above the desulfurization tower (1), there are fixedly connected hollow bins (3). At one end of the hollow bin (3) located inside the desulfurization tower (1), there is an atomizing nozzle (8). The outer end face of the hollow bin (3) is fixedly connected with an absorbent delivery pipe (4). At the lower part inside the desulfurization tower (1), there is a bottom plate (9) fixedly connected. In the middle of the bottom of the bottom plate (9), there is a motor (10) fixedly connected. The output end of the motor (10) is fixedly connected with a stirring blade (11).

2. The natural gas desulfurization and purification treatment device according to claim 1, wherein: One end of the natural gas delivery pipe (2) located inside the desulfurization tower (1) is fixedly connected with the input end of the compressor (5). The outer side of the spiral pipe (7) is in contact with the inner wall of the desulfurization tower (1). The center of the bottom of the stirring blade (11) is in contact with the center of the top of the bottom plate (9). The bottom of the motor (10) is fixedly connected with the inner bottom end of the desulfurization tower (1).

3. The natural gas desulfurization and purification treatment device according to claim 1, characterized in that: The number of the air outlet holes (12) on the inner side of the spiral pipe (7) is several, and the air outlet holes (12) are evenly distributed on the spiral inner side face of the spiral pipe (7). The diameter of the air outlet hole (12) is one centimeter.

4. The natural gas desulfurization and purification treatment device according to claim 1, wherein: The interior of the hollow bin (3) is hollow, and the atomizing nozzles (8) are evenly distributed above the left and right sides inside the desulfurization tower (1). The positions of the atomizing nozzles (8) are on the left and right sides directly above the spiral pipe (7).

5. The natural gas desulfurization and purification treatment device according to claim 1, wherein: The motor (10) and the stirring blade (11) are connected through an output shaft. In the middle of the bottom plate (9), there is a circular through hole opened, and the diameter of the circular through hole is matched with the cross-sectional diameter of the output shaft.

6. The natural gas desulfurization and purification treatment device according to claim 1, wherein: In the middle of the interior of the hollow bin (3), there is a frame (13) fixedly connected. Inside the frame (13), there is a filter screen (14) fixedly connected.

7. The natural gas desulfurization and purification treatment device according to claim 6, characterized in that: The overall shape and size of the frame (13) are matched with the inner shape and size of the longitudinal section of the hollow bin (3), and the pore size of the filter screen (14) is matched with the aperture of the atomizing nozzle (8).

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