Natural gas purification device with hydrogen energy recovery function

Abstract

The application discloses a natural gas purification device with hydrogen energy recovery function and belongs to the technical field of natural gas purification, which comprises a shell, a conveying cavity is arranged at the bottom of the shell, a plurality of gas inlets are arranged at the bottom of the conveying cavity, a plurality of gas outlets are arranged at the top of the shell, a condensing device is arranged in the shell, and an electrolytic device is arranged at the bottom of the condensing device. The condensing device condenses steam contained in natural gas, liquid beads generated by steam condensation are conveyed to the electrolytic device, the electrolytic device electrolyzes the liquid beads, hydrogen and oxygen are generated, the hydrogen energy recovery effect is realized, the natural gas separated and dehydrated is continuously conveyed to the side close to the gas outlet, and is finally discharged through the gas outlet, so that the dehydration process of natural gas purification is realized, impurities are prevented from affecting the purity of natural gas, and the purification quality of natural gas is improved.

Description

Technical Field

[0001] This invention relates to the field of natural gas purification technology, specifically to a natural gas purification device with hydrogen recovery function. Background Technology

[0002] In recent years, global natural gas consumption has increased significantly, making it one of the most important energy sources. Natural gas is mainly composed of alkanes, with methane making up the vast majority. In addition, it generally contains hydrogen sulfide, carbon dioxide, nitrogen, steam, and small amounts of carbon monoxide and other impurity gases. The presence of these impurity gases has a significant impact on the storage and transportation of natural gas. Therefore, there are huge challenges in the utilization and processing of natural gas. It is necessary to remove acidic polluting gases, mainly hydrogen sulfide and carbon dioxide, from the raw natural gas to purify it.

[0003] Existing natural gas purification equipment typically dehydrates the steam contained in natural gas to improve the safety of natural gas during storage and transportation. However, the water produced during dehydration cannot be reused, resulting in wastewater that requires more costly treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a natural gas purification device with hydrogen recovery function to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A natural gas purification device with hydrogen recovery function includes: a shell, a conveying chamber at the bottom of the shell, a plurality of air inlets at the bottom of the conveying chamber, the plurality of air inlets being arranged around the axis of the shell, a plurality of air outlets at the top of the shell, the plurality of air outlets being arranged around the axis of the shell, a condensation device on the side of the conveying chamber away from the air inlets, and an electrolysis device at the bottom of the condensation device;

[0007] Natural gas is fed into the delivery chamber through the inlet. Once inside, the gas moves along the axis of the casing. During this movement, it first encounters a condenser, which is then activated by the controller. The condenser condenses the vapor in the natural gas, and the resulting liquid droplets are fed into an electrolysis unit. This electrolysis process produces hydrogen and oxygen, thus generating byproducts and achieving hydrogen recovery. The dehydrated natural gas is then fed towards the outlet and discharged through it. This process of dehydration in natural gas purification avoids impurities affecting the purity of the gas and improves the purification quality.

[0008] Preferably, the condensation device includes: a condensation column, which is disposed between the air inlet and the air outlet, and a plurality of baffles are disposed on the outside of the condensation column. The plurality of baffles are arranged around the axis of the condensation column, and the end of the baffle away from the condensation column is connected to the inner wall of the shell. A conveying channel is disposed between two adjacent baffles.

[0009] Preferably, a plurality of flexible plates are provided in the conveyor channel, and the plurality of flexible plates are arranged at equal intervals along the side of the conveyor channel. One end of the flexible plate is connected to the side wall of the conveyor channel, and the other end of the flexible plate is slidably and sealed to the inner wall of the shell. The side wall of the flexible plate is slidably and sealed to the side wall of the partition. The flexible plate is a condenser plate. A cooler is provided in the shell and the cooler is connected to the flexible plate.

[0010] Preferably, the flexible plate has a water inlet at its bottom, the condenser column has a water flow chamber inside, the water inlet is connected to the water flow chamber, the bottom of the water flow chamber has a spiral body, and the spiral body has a water channel.

[0011] Preferably, the electrolysis device includes: an electrolysis chamber disposed within a conveying chamber, a cylinder disposed inside the electrolysis chamber, a cathode plate disposed on the inner wall of the electrolysis chamber, and an anode plate disposed on the inner wall of the cylinder.

[0012] Preferably, the end of the spiral body away from the condenser column is connected to the electrolysis chamber, the end of the water channel away from the water flow chamber is connected to the electrolysis chamber, and a No. 1 gas supply pipe is provided at the top of the water flow chamber.

[0013] Preferably, a second air supply pipe is provided on the side of the cylinder near the spiral body, the second air supply pipe extends towards the side near the water flow chamber, and the side of the second air supply pipe away from the cylinder is located inside the first air supply pipe.

[0014] Natural gas is fed into the conveying chamber through the inlet and then moves towards the side near the conveying channel. Once the natural gas reaches the conveying channel, it moves along the axis of the channel. During this movement, the controller activates the refrigeration unit. Since the flexible plate is a condensing plate, the low temperature generated by the refrigeration unit is transferred to the flexible plate. One end of the flexible plate is fixed to the conveying channel, while the other three sides are slidably sealed to the surfaces of the shell and the partition. This allows the natural gas to deflect the flexible plate as it moves, creating a gap between the plate and the shell. The natural gas can then move through this gap, contacting the surface of the flexible plate. As the natural gas is conveyed within the conveying chamber, it is subjected to heat generated by electrolysis, causing the vapor in the gas to condense rapidly, forming droplets that slide down the surface of the flexible plate and are then output through the water outlet.

[0015] The two adjacent flexible plates, the shell, and the conveying channel form a closed space. After the natural gas is transported into this space, the natural gas pushes the flexible plates to open and close intermittently, increasing the time the gas stays in the space. This allows the steam contained in the natural gas to fully contact the surface of the flexible plates, thereby improving the efficiency of steam condensation into liquid droplets.

[0016] The liquid droplets then slide along the water inlet into the water flow chamber, causing them to move towards the side of the flow channel. The droplets then flow into the electrolysis chamber along the flow channel. The controller then starts the electrolysis device. Because the inner wall of the electrolysis chamber is equipped with a cathode plate and the inner wall of the cylinder is equipped with an anode plate, the hydrogen gas produced by electrolysis will accumulate in the space between the cylinder and the electrolysis chamber. The hydrogen gas then moves along the flow channel and into the water flow chamber, and is finally delivered to the first gas delivery pipe through the water flow chamber. The oxygen gas produced by electrolysis accumulates on the side of the cylinder away from the inner wall of the electrolysis chamber, and is then delivered to the second gas delivery pipe through the cylinder.

[0017] By dehydrating the steam in natural gas and then electrolyzing the resulting liquid droplets, hydrogen and oxygen are produced, thus realizing the recovery and utilization of hydrogen energy. This not only purifies natural gas but also turns it into a byproduct of the natural gas production process, thereby improving resource utilization. Furthermore, the heat generated by electrolysis is used to raise the temperature of the natural gas in the conveying chamber, thereby increasing the temperature difference between the steam and the flexible plate, which in turn improves the efficiency of steam condensation and shortens the time for natural gas dehydration and purification.

[0018] Preferably, the axis of the air inlet is at an angle to the bottom plane of the conveying cavity, the axis of the air outlet is at an angle to the axis of the housing, and the inner wall of the conveying cavity is provided with spiral patterns.

[0019] Because of the angle between the inlet and the bottom plane of the conveying chamber, and the angle between the outlet and the axis of the shell, natural gas is conveyed at a certain angle during both input and output. When natural gas is input, it enters through the inlet and rotates along the axis of the shell under the action of the spiral pattern on the inner wall of the conveying chamber. This firstly accelerates the conveying efficiency of natural gas and extends the residence time of natural gas in the conveying chamber. Since the electrolysis reaction is exothermic, a large amount of heat is generated. This heat is transferred to the conveying chamber through the electrolysis chamber, and the natural gas in the conveying chamber will be affected by the heat and its temperature will rise, thereby extending the heating time of natural gas and accelerating the efficiency of subsequent steam condensation.

[0020] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0021] 1. Because one end of the flexible plate is fixed to the conveying channel, and the other three sides of the flexible plate are slidably sealed to the surfaces of the shell and the partition, when the natural gas moves, it can push the flexible plate to deflect, thereby creating a gap between the flexible plate and the shell. The natural gas can then move through the gap between the flexible plate and the shell, and come into contact with the surface of the flexible plate during movement. Furthermore, when the natural gas is transported in the conveying chamber, it is subjected to the heat generated by electrolysis, which further causes the vapor contained in the natural gas to be rapidly condensed, forming liquid droplets, which eventually slide down the surface of the flexible plate and are then output through the water outlet. Two adjacent flexible plates, the shell, and the conveying channel form a closed space. After the natural gas is transported into this space, it pushes the flexible plates to open and close intermittently, increasing the time the gas stays in the space. This allows the vapor contained in the natural gas to fully contact the surface of the flexible plate, thereby improving the efficiency of vapor condensation into liquid droplets.

[0022] 2. By dehydrating the steam in the natural gas and then electrolyzing the resulting liquid droplets, hydrogen and oxygen are produced, thus realizing the recovery and utilization of hydrogen energy. This not only purifies the natural gas but also turns it into a byproduct of the natural gas production process, thereby improving resource utilization. Furthermore, the heat generated by electrolysis is used to raise the temperature of the natural gas in the conveying chamber, thereby increasing the temperature difference between the steam and the flexible plate, which in turn improves the efficiency of steam condensation and shortens the time for natural gas dehydration and purification. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a main body diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the condenser column;

[0027] Figure 4 This is a schematic diagram of the internal structure of the condenser column near the outlet.

[0028] Figure 5 This is a schematic diagram of the internal structure of the condenser column near the air inlet.

[0029] Figure 6 yes Figure 3 Enlarged view of point A in the middle;

[0030] In the diagram: 1. Shell; 11. Conveying chamber; 12. Air inlet; 13. Air outlet;

[0031] 2. Condensation device; 21. Condensation column; 22. Baffle plate; 23. Conveying channel; 24. Flexible plate; 25. Water inlet; 26. Water flow chamber; 261. No. 1 gas supply pipe; 27. Spiral; 271. Water flow channel;

[0032] 3. Electrolysis device; 31. Electrolysis chamber; 32. Cylinder; 33. Gas supply pipe No. 2. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-6 The present invention provides the following technical solution:

[0035] A natural gas purification device with hydrogen recovery function includes: a shell 1, a conveying chamber 11 at the bottom of the shell 1, a plurality of air inlets 12 at the bottom of the conveying chamber 11, the plurality of air inlets 12 being arranged around the axis of the shell 1, a plurality of air outlets 13 at the top of the shell 1, the plurality of air outlets 13 being arranged around the axis of the shell 1, a condensing device 2 on the side of the conveying chamber 11 away from the air inlets 12, and an electrolysis device 3 at the bottom of the condensing device 2.

[0036] In one specific embodiment of the present invention, the axis of the air inlet 12 forms an angle with the bottom plane of the conveying cavity 11, the axis of the air outlet 13 forms an angle with the axis of the housing 1, and the inner wall of the conveying cavity 11 is provided with spiral patterns.

[0037] In one specific embodiment of the present invention, the condensing device 2 includes: a condensing column 21, which is disposed between the air inlet 12 and the air outlet 13. A plurality of partitions 22 are disposed on the outside of the condensing column 21. The plurality of partitions 22 are arranged around the axis of the condensing column 21. The end of the partition 22 away from the condensing column 21 is connected to the inner wall of the housing 1. A conveying channel 23 is disposed between two adjacent partitions 22.

[0038] In one specific embodiment of the present invention, a plurality of flexible plates 24 are provided inside the conveying channel 23. The plurality of flexible plates 24 are arranged at equal intervals along the side of the conveying channel 23. One end of the flexible plate 24 is connected to the side wall of the conveying channel 23, and the other end of the flexible plate 24 is slidably and sealingly connected to the inner wall of the housing 1. The side wall of the flexible plate 24 is slidably and sealingly connected to the side wall of the partition 22. The flexible plate 24 is a condensing plate. A refrigerator is provided inside the housing 1, and the refrigerator is connected to the flexible plate 24.

[0039] In one specific embodiment of the present invention, the bottom of the flexible plate 24 is provided with a water inlet 25, the interior of the condensation column 21 is provided with a water flow chamber 26, the water inlet 25 is connected to the water flow chamber 26, the bottom of the water flow chamber 26 is provided with a spiral body 27, and the spiral body 27 is provided with a water channel 271.

[0040] In one specific embodiment of the present invention, the electrolysis device 3 includes: an electrolysis chamber 31, which is disposed in the conveying chamber 11, a cylinder 32 is disposed inside the electrolysis chamber 31, a cathode plate is disposed on the inner wall of the electrolysis chamber 31, and an anode plate is disposed on the inner wall of the cylinder 32.

[0041] In one specific embodiment of the present invention, the end of the spiral 27 away from the condenser column 21 is connected to the electrolysis chamber 31, the end of the water channel 271 away from the water flow chamber 26 is connected to the electrolysis chamber 31, and a gas supply pipe 261 is provided at the top of the water flow chamber 26.

[0042] In one specific embodiment of the present invention, a second air supply pipe 33 is provided on the side of the cylinder 32 near the spiral body 27. The second air supply pipe 33 extends towards the side near the water flow chamber 26. The side of the second air supply pipe 33 away from the cylinder 32 is located inside the first air supply pipe 261.

[0043] Working principle of the invention:

[0044] Natural gas is input into the conveying chamber 11 through the inlet 12. Due to the angle between the inlet 12 and the bottom plane of the conveying chamber 11, and the angle between the outlet 13 and the axis of the shell 1, the natural gas is conveyed at a certain angle during both input and output. When the natural gas is input, after entering through the inlet 12, it rotates along the axis of the shell 1 under the action of the spiral pattern on the inner wall of the conveying chamber 11. This firstly accelerates the conveying efficiency of the natural gas and prolongs the residence time of the natural gas in the conveying chamber 11. Since the electrolysis reaction is exothermic, a large amount of heat is generated. The heat is transferred to the conveying chamber 11 through the electrolysis chamber 31. As a result, the natural gas in the conveying chamber 11 is affected by the heat and its temperature rises, thereby prolonging the heating time of the natural gas.

[0045] Then, it moves towards the side closer to the conveying channel 23 through the conveying chamber 11. After the natural gas is transferred to the conveying channel 23, it moves along the axis of the conveying channel 23. During the movement of the natural gas, the controller controls the refrigerator to start. Since the flexible plate 24 is a condensing plate, the low temperature generated by the refrigerator is transferred to the flexible plate 24. Since one end of the flexible plate 24 is fixed to the conveying channel 23, and the other three sides of the flexible plate 24 are slidably sealed to the surfaces of the shell 1 and the partition plate 22 respectively, the natural gas can push the flexible plate 24 to deflect when it moves, thereby creating a gap between the flexible plate 24 and the shell 1. The natural gas can then move through the gap between the flexible plate 24 and the shell 1, so that the natural gas will come into contact with the surface of the flexible plate 24 when it moves. Also, since the natural gas is transported in the conveying chamber 11, the natural gas is subjected to the heat generated by electrolysis, which further causes the vapor contained in the natural gas to be rapidly condensed, thereby forming liquid droplets, which eventually slide down the surface of the flexible plate 24 and are then output through the water outlet 25.

[0046] The two adjacent flexible plates 24, together with the shell 1 and the conveying channel 23, form a closed space. After the natural gas is transported into this space, the natural gas pushes the flexible plates 24 to open and close intermittently, increasing the time the gas stays in the space. This allows the steam contained in the natural gas to fully contact the surface of the flexible plates 24, thereby improving the efficiency of steam condensation into liquid droplets.

[0047] The liquid droplets then slide along the water inlet 25 into the water flow chamber 26, causing them to move towards the side of the water flow channel 271. The droplets then flow along the water flow channel 271 into the electrolysis chamber 31. Subsequently, the controller starts the electrolysis device 3. Since the inner wall of the electrolysis chamber 31 is equipped with a cathode plate and the inner wall of the cylinder 32 is equipped with an anode plate, the hydrogen gas generated by electrolysis will accumulate in the space between the cylinder 32 and the electrolysis chamber 31. The hydrogen gas generated by electrolysis then moves along the water flow channel 271 and into the water flow chamber 26. Finally, it is transported to the first gas supply pipe 261 through the water flow chamber 26. The oxygen generated by electrolysis accumulates on the side of the cylinder 32 away from the inner wall of the electrolysis chamber 31. The oxygen is then transported to the second gas supply pipe 33 through the cylinder 32.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A natural gas purification device with hydrogen recovery function, characterized in that: include: A housing (1) is provided with a conveying chamber (11) at the bottom of the housing (1). The bottom of the conveying chamber (11) is provided with a plurality of air inlets (12). The plurality of air inlets (12) are arranged around the axis of the housing (1). The top of the housing (1) is provided with a plurality of air outlets (13). The plurality of air outlets (13) are arranged around the axis of the housing (1). A condensing device (2) is provided on the side of the conveying chamber (11) away from the air inlets (12). An electrolysis device (3) is provided at the bottom of the condensing device (2). The condensation device (2) includes: a condensation column (21), which is disposed between the air inlet (12) and the air outlet (13). A plurality of partitions (22) are disposed on the outside of the condensation column (21). The plurality of partitions (22) are arranged around the axis of the condensation column (21). The end of the partition (22) away from the condensation column (21) is connected to the inner wall of the shell (1). A conveying channel (23) is disposed between two adjacent partitions (22). The conveyor (23) is provided with a plurality of flexible plates (24), which are arranged at equal intervals along the side of the conveyor (23). One end of the flexible plate (24) is connected to the side wall of the conveyor (23), and the other end of the flexible plate (24) is slidably sealed to the inner wall of the shell (1). The side wall of the flexible plate (24) is slidably sealed to the side wall of the partition (22). The flexible plate (24) is a condenser plate. A cooler is provided in the shell (1), and the cooler is connected to the flexible plate (24). The flexible plate (24) is provided with a water inlet (25) at the bottom, and the condenser column (21) is provided with a water flow chamber (26) inside. The water inlet (25) is connected to the water flow chamber (26), and the bottom of the water flow chamber (26) is provided with a spiral body (27), and the spiral body (27) is provided with a water channel (271). The electrolysis device (3) includes: an electrolysis chamber (31), which is disposed in the conveying chamber (11), and a cylinder (32) is disposed inside the electrolysis chamber (31). A cathode plate is disposed on the inner wall of the electrolysis chamber (31), and an anode plate is disposed on the inner wall of the cylinder (32). The end of the spiral (27) away from the condenser column (21) is connected to the electrolysis chamber (31), and the end of the water channel (271) away from the water flow chamber (26) is connected to the electrolysis chamber (31). A gas supply pipe (261) is provided at the top of the water flow chamber (26).

2. A natural gas purification device with hydrogen recovery function according to claim 1, characterized in that: The cylinder (32) is provided with a second gas supply pipe (33) on the side near the spiral body (27). The second gas supply pipe (33) extends towards the side near the water flow chamber (26). The side of the second gas supply pipe (33) away from the cylinder (32) is located inside the first gas supply pipe (261).

3. A natural gas purification device with hydrogen recovery function according to claim 1, characterized in that: The axis of the air inlet (12) forms an angle with the bottom plane of the conveying cavity (11), the axis of the air outlet (13) forms an angle with the axis of the housing (1), and the inner wall of the conveying cavity (11) is provided with spiral patterns.

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