Natural gas liquefaction dehydration and mercury removal equipment

Abstract

The utility model discloses a kind of natural gas liquefaction dehydration mercury removal equipment, it is related to natural gas processing technical field, including bottom plate, the upper surface of bottom plate is fixedly installed with dehydration component, the right side of dehydration component is provided with box, and box is fixedly connected with bottom plate, cooling component is arranged between box and dehydration component, cooling cavity is set in the inside of box, cooling component is communicated with cooling cavity, the inner wall of box is fixedly installed with several baffles, several baffles are spaced distribution along the line direction of box, the cold conduit of cooling component exports low-temperature gas in cooling cavity, the hot conduit of cooling component exports higher-temperature gas in heating cavity, to realize completion cooling and heating processing simultaneously, reduce the complexity degree of pipeline distribution in equipment, the time required is greatly reduced when staff maintains equipment, to improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of natural gas processing technology, specifically to a natural gas liquefaction, dehydration, and mercury removal device. Background Technology

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas, etc.).

[0003] The commonly used definition of "natural gas" is a narrow one, based on energy, referring to a mixture of hydrocarbon and non-hydrocarbon gases naturally occurring in geological formations. In petroleum geology, it usually refers to oilfield gas and gas field gas. Its composition is mainly hydrocarbons, but it also contains non-hydrocarbon gases.

[0004] The existing technology has the following problems: In the process of dehydrating and de-pumping natural gas, in order to improve the dehydration and de-pumping effect, heating and cooling devices need to be used to heat and cool the natural gas, resulting in the need to add heating and cooling devices to the entire equipment, making the overall pipeline layout more complex. This leads to a significant increase in the time spent by staff when maintaining the equipment. At the same time, the training time for new employees to learn about the pipelines inside the equipment is relatively long, making it difficult for new employees to get started. Utility Model Content

[0005] To solve the above-mentioned technical problems, a natural gas liquefaction dehydration and mercury removal equipment is provided, which solves the problems of complex overall pipeline layout and difficulty for new employees to get started with the current equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A natural gas liquefaction dehydration and mercury removal device includes a base plate, a dehydration component fixedly installed on the upper surface of the base plate, a housing on the right side of the dehydration component and fixedly connected to the base plate, a cooling component between the housing and the dehydration component, a cooling chamber inside the housing and the cooling component communicating with the cooling chamber, a plurality of baffles fixedly installed on the inner wall of the housing and spaced apart along the edge of the housing, a hydraulic device on the side of the housing and communicating with the housing through a discharge pipe, and a first gas outlet pipe fixedly installed on the outer side of the housing and communicating with the cooling chamber.

[0007] Preferably, the dehydration assembly includes a dehydration tank, an air inlet pipe fixedly installed on the outer surface of the dehydration tank, the air inlet pipe communicating with the dehydration tank, a heating chamber opened inside the dehydration tank, a support rod fixedly installed at the bottom of the inner wall of the dehydration tank, a spraying assembly fixedly connected to the upper end of the support rod, a connecting plate provided inside the spraying assembly, a feed pipe fixedly installed on the upper surface of the connecting plate, the feed pipe extending above the dehydration tank, the upper end of the feed pipe communicating with a return pipe, the other end of the return pipe communicating with the bottom of the dehydration tank, a connecting pipe fixedly installed on the upper surface of the dehydration tank corresponding to the feed pipe, one end of the connecting pipe communicating with the dehydration tank, and the other end of the connecting pipe communicating with the housing.

[0008] Preferably, the spraying assembly includes a connecting plate, on the outer surface of which a plurality of conveying pipes are fixedly installed. The plurality of conveying pipes are circumferentially distributed about the center line of the connecting plate. A connecting groove corresponding to the conveying pipe is formed inside the connecting plate. The connecting groove communicates with the feed pipe, and the plurality of conveying pipes are all connected to the connecting groove. A plurality of spray nozzles are fixedly installed on the outer surface of the conveying pipes. The plurality of spray nozzles are linearly distributed along the axial direction of the conveying pipes, and the plurality of spray nozzles are all connected to the conveying pipes. A guide rod is fixedly installed on the inner wall of the conveying pipe corresponding to the spray nozzle. A baffle corresponding to the spray nozzle is fixedly installed at the lower end of the guide rod.

[0009] Preferably, the cooling component includes a fixed plate with a cavity inside. A heat pipe is fixedly installed on the side of the fixed plate near the dehydration component. One end of the heat pipe is connected to the cavity, and the other end is connected to the heating cavity. A fan blade is provided inside the cavity, and a cold pipe is fixedly installed inside the fan blade. The cold pipe is rotatably connected to the fixed plate. A sleeve is fixedly installed on the side of the fixed plate corresponding to the cold pipe, and the other end of the sleeve is connected to the cooling cavity.

[0010] Compared with the prior art, the advantages of this utility model are as follows: By setting up a cooling component, the cold conduit of the cooling component outputs low-temperature gas to the cooling chamber, and the hot conduit of the cooling component outputs high-temperature gas to the heating chamber, thereby simultaneously achieving cooling and heating treatment. This reduces the complexity of the piping distribution within the equipment, significantly reducing the time required for maintenance and thus improving maintenance efficiency. At the same time, the reduced complexity of the piping distribution within the system greatly shortens the learning time for new employees during onboarding training, reducing the difficulty for new employees to get started. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of part of the internal structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the dehydration component in this utility model; Figure 4 This is a schematic diagram of the internal structure of the spraying component in this utility model; Figure 5 This is a schematic diagram of the internal structure of the cooling component in this utility model.

[0012] The following are the labels in the diagram: 1. Base plate; 2. Dehydration assembly; 3. Box body; 4. Cooling assembly; 5. Cooling chamber; 6. Baffle plate; 7. Hydraulic equipment; 8. Discharge pipe; 9. First air outlet pipe; 10. Dehydration tank; 11. Air inlet pipe; 12. Heating chamber; 13. Support rod; 14. Spraying assembly; 15. Feed pipe; 16. Return pipe; 17. Connecting pipe; 18. Connecting plate; 19. Conveying pipe; 20. Connecting groove; 21. Spray pipe; 22. Guide rod; 23. Baffle; 24. Fixing plate; 25. Chamber; 26. Heat pipe; 27. Fan blade; 28. Cold pipe; 29. ​​Sleeve. Detailed Implementation

[0013] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0014] Reference Figure 1-5 As shown, a natural gas liquefaction dehydration and mercury removal device includes a base plate 1. A dehydration component 2 is fixedly installed on the upper surface of the base plate 1. A housing 3 is located on the right side of the dehydration component 2 and is fixedly connected to the base plate 1. A cooling component 4 is provided between the housing 3 and the dehydration component 2. A cooling chamber 5 is opened inside the housing 3, and the cooling component 4 communicates with the cooling chamber 5. A plurality of baffle plates 6 are fixedly installed on the inner wall of the housing 3 and are spaced apart along the edge of the housing 3. A hydraulic device 7 is provided on the side of the housing 3 and is connected to the housing 3 through a discharge pipe 8. A first gas outlet is fixedly installed on the outer side of the housing 3. Pipe 9, the first gas outlet pipe 9 is connected to the cooling chamber 5. Natural gas enters the equipment through the dehydration component 2. The dehydration component 2 dehydrates the natural gas by spraying triethylene glycol. At the same time, the cooling component 4 heats the dehydration component 2 at low temperature to increase the temperature of the natural gas entering the dehydration component 2 and prevent incomplete dehydration due to excessively low temperature. At the same time, the cooling component 4 cools the inside of the tank 3 to liquefy the mercury in the natural gas and lower the temperature of the natural gas. The liquefaction equipment liquefies the natural gas. Several baffles 6 extend the distance that the natural gas moves within the tank 3, thereby ensuring the degree of liquefaction of the mercury in the natural gas.

[0015] like Figure 3As shown, the dehydration assembly 2 includes a dehydration tank 10. An air inlet pipe 11 is fixedly installed on the outer surface of the dehydration tank 10, and the air inlet pipe 11 communicates with the dehydration tank 10. A heating chamber 12 is opened inside the dehydration tank 10. A support rod 13 is fixedly installed at the bottom of the inner wall of the dehydration tank 10. A spraying assembly 14 is fixedly connected to the upper end of the support rod 13. A connecting plate 18 is provided inside the spraying assembly 14. A feed pipe 15 is fixedly installed on the upper surface of the connecting plate 18. The feed pipe 15 extends above the dehydration tank 10. The upper end of the feed pipe 15 communicates with a return pipe 16. The other end of the return pipe 16 communicates with the bottom of the dehydration tank 10. The feed pipe 15 corresponds to the dehydration... A connecting pipe 17 is fixedly installed on the upper surface of tank 10. One end of the connecting pipe 17 is connected to the dehydration tank 10, and the other end of the connecting pipe 17 is connected to the housing 3. The heating chamber 12 heats the gas in the material evenly. Triethylene glycol enters the spraying assembly 14 through the feed pipe 15. The spraying assembly 14 sprays triethylene glycol evenly to dry the natural gas. A guide plate is fixedly installed on the inner wall of the dehydration tank 10 corresponding to the air inlet pipe 11. The guide plate prevents triethylene glycol from leaving the equipment through the air inlet pipe 11. A second air outlet pipe is fixedly installed on the upper surface of the dehydration tank 10. The second air outlet pipe is connected to the heating chamber 12 and is used to balance the internal pressure of the heating chamber 12.

[0016] like Figure 4 As shown, the spraying assembly 14 includes a connecting plate 18. Several conveying pipes 19 are fixedly installed on the outer surface of the connecting plate 18. The several conveying pipes 19 are circumferentially distributed about the center line of the connecting plate 18. A connecting groove 20 corresponding to the conveying pipes 19 is opened inside the connecting plate 18. The connecting groove 20 is connected to the feed pipe 15, and the several conveying pipes 19 are all connected to the connecting groove 20. Several spray nozzles 21 are fixedly installed on the outer surface of the conveying pipes 19. The several spray nozzles 21 are linearly distributed along the axial direction of the conveying pipes 19, and the several spray nozzles 21 are all connected to the conveying pipes 19. A guide rod 22 is fixedly installed on the inner wall of the conveying pipe 19 corresponding to the spray nozzle 21. A baffle 23 corresponding to the spray nozzle 21 is fixedly installed at the lower end of the guide rod 22. High-pressure triethylene glycol passes through the connecting groove 20, the conveying pipes 19 and the spray nozzles 21 in sequence and impacts the surface of the baffle 23. The baffle 23 disperses the liquid, thereby allowing the triethylene glycol to fully contact the natural gas.

[0017] like Figure 5As shown, the cooling component 4 includes a fixed plate 24, with a chamber 25 inside the fixed plate 24. A heat pipe 26 is fixedly installed on the side of the fixed plate 24 near the dehydration component 2. One end of the heat pipe 26 is connected to the chamber 25, and the other end is connected to the heating chamber 12. A fan blade 27 is arranged inside the chamber 25, and a cold pipe 28 is fixedly installed inside the fan blade 27. The cold pipe 28 is rotatably connected to the fixed plate 24. A sleeve 29 is fixedly installed on the side of the fixed plate 24 corresponding to the cold pipe 28. The other end of the sleeve 29 is connected to the cooling chamber 5. A gas delivery pipe corresponding to the fan blade 27 is fixedly installed on the upper surface of the fixed plate 24. The gas delivery pipe is connected to the chamber 25. High-speed airflow impacts the surface of the fan blade 27 through the gas delivery pipe, causing the fan blade 27 to rotate at high speed. During the high-speed rotation of the fan blade 27, the gas inside the chamber 25 is... A vortex is formed, with the airflow having the highest angular velocity at the center and a lower angular velocity near the tube wall. Due to the difference in angular velocity, friction occurs between the layers of the free vortex. The airflow with the highest angular velocity at the center transfers energy to the outer layer with the lower angular velocity during the friction process, causing the airflow in the center to lose energy, reduce its kinetic energy, slow down, and decrease in temperature. The airflow in the outer layer gains momentum, increases its kinetic energy, and at the same time, it rubs against the tube wall, converting some of its kinetic energy into heat energy, increasing its temperature. The airflow with the lower temperature in the center is drawn out through the cold duct 28 at the center of the vortex to form the cold airflow required for cooling, while the airflow with the higher temperature in the outer layer is drawn out through the hot duct 26 to form the hot airflow. By controlling the ratio of cold and hot airflows, the temperature and flow rate of the cold and hot airflows can be controlled. The sleeve 29 prevents the cold airflow from leaking out.

[0018] Working principle: Natural gas enters the dehydration tank 10 of the dehydration component 2 through the inlet pipe 11. The heating chamber 12 uniformly heats the gas in the material. Triethylene glycol enters the spraying component 14 through the feed pipe 15. The high-pressure triethylene glycol passes through the connecting groove 20, the conveying pipe 19, and the spray pipe 21 in sequence, impacting the surface of the baffle 23. The baffle 23 disperses the liquid, thus ensuring full contact between the triethylene glycol and the natural gas. The dried natural gas enters the housing 3 through the connecting pipe 17. The cooling chamber 5 cools the natural gas inside the housing 3, causing the mercury in the natural gas to liquefy and simultaneously reducing the temperature of the natural gas. The liquefaction equipment liquefies the natural gas. Several baffles 6 extend the movement distance of the natural gas within the housing 3, thereby ensuring the degree of liquefaction of the mercury in the natural gas. The high-speed airflow impacts the surface of the fan blade 27 through the gas delivery pipe, causing the fan blade 27 to rotate at high speed. During the process, the gas in chamber 25 forms a vortex. The airflow angular velocity is the largest in the center of the vortex and the airflow angular velocity is lower near the tube wall. Due to the difference in angular velocity, friction occurs between the layers of the free vortex. The airflow angular velocity is the largest in the center. During the friction process, energy is transferred to the outer airflow with the lower angular velocity, causing the airflow in the center to lose energy, reduce kinetic energy, slow down, and decrease in temperature. The airflow in the outer layer gains momentum and increases kinetic energy. At the same time, it rubs against the tube wall of the vortex, converting some of the kinetic energy into heat energy and increasing in temperature. The airflow in the center with the lower temperature is led out through the cold duct 28 in the center of the vortex to form the cold airflow required for cooling. The airflow in the outer layer with the higher temperature is led out through the hot duct 26 to form the hot airflow. By controlling the ratio of cold and hot airflow, the temperature and flow rate of the cold and hot airflow can be controlled. The sleeve 29 prevents the cold airflow from leaking out.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A natural gas liquefaction dehydration and mercury removal device, comprising a base plate (1), characterized in that: A dehydration assembly (2) is fixedly installed on the upper surface of the base plate (1). A box (3) is provided on the right side of the dehydration assembly (2), and the box (3) is fixedly connected to the base plate (1). A cooling assembly (4) is provided between the box (3) and the dehydration assembly (2). A cooling chamber (5) is opened inside the box (3). The cooling assembly (4) is connected to the cooling chamber (5). Several baffles (6) are fixedly installed on the inner wall of the box (3). Several baffles (6) are distributed at intervals along the edge of the box (3). A hydraulic device (7) is provided on the side of the box (3). The hydraulic device (7) is connected to the box (3) through a discharge pipe (8). A first air outlet pipe (9) is fixedly installed on the outer side of the box (3). The first air outlet pipe (9) is connected to the cooling chamber (5).

2. The natural gas liquefaction dehydration and mercury removal equipment according to claim 1, characterized in that: The dehydration assembly (2) includes a dehydration tank (10). An air inlet pipe (11) is fixedly installed on the outer surface of the dehydration tank (10). The air inlet pipe (11) is connected to the dehydration tank (10). A heating chamber (12) is opened inside the dehydration tank (10). A support rod (13) is fixedly installed at the bottom of the inner wall of the dehydration tank (10). A spraying assembly (14) is fixedly connected to the upper end of the support rod (13). A connecting plate (18) is provided inside the spraying assembly (14). A feed pipe (15) is fixedly installed on the upper surface of (18). The feed pipe (15) extends to the top of the dehydration tank (10). The upper end of the feed pipe (15) is connected to the return pipe (16). The other end of the return pipe (16) is connected to the bottom of the dehydration tank (10). A connecting pipe (17) is fixedly installed on the upper surface of the dehydration tank (10) corresponding to the feed pipe (15). One end of the connecting pipe (17) is connected to the dehydration tank (10), and the other end of the connecting pipe (17) is connected to the box body (3).

3. The natural gas liquefaction dehydration and mercury removal equipment according to claim 2, characterized in that: The spraying assembly (14) includes a connecting plate (18). Several conveying pipes (19) are fixedly installed on the outer surface of the connecting plate (18). The several conveying pipes (19) are circumferentially distributed about the center line of the connecting plate (18). A connecting groove (20) corresponding to the conveying pipe (19) is opened inside the connecting plate (18). The connecting groove (20) is connected to the feed pipe (15), and the several conveying pipes (19) are all connected to the connecting groove (20). Several spray pipes (21) are fixedly installed on the outer surface of the conveying pipe (19). The several spray pipes (21) are linearly distributed along the axial direction of the conveying pipe (19), and the several spray pipes (21) are all connected to the conveying pipe (19). A guide rod (22) is fixedly installed on the inner wall of the conveying pipe (19) corresponding to the spray pipe (21). A baffle (23) corresponding to the spray pipe (21) is fixedly installed at the lower end of the guide rod (22).

4. The natural gas liquefaction dehydration and mercury removal equipment according to claim 2, characterized in that: The cooling component (4) includes a fixing plate (24), and a chamber (25) is provided inside the fixing plate (24). A heat pipe (26) is fixedly installed on the side of the fixing plate (24) near the dehydration component (2). One end of the heat pipe (26) is connected to the chamber (25), and the other end of the heat pipe (26) is connected to the heating chamber (12). A fan blade (27) is provided inside the chamber (25), and a cold pipe (28) is fixedly installed inside the fan blade (27). The cold pipe (28) is rotatably connected to the fixing plate (24). A sleeve (29) is fixedly installed on the side of the fixing plate (24) corresponding to the cold pipe (28), and the other end of the sleeve (29) is connected to the cooling chamber (5).

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