Natural gas deacidification device

Abstract

The utility model discloses a natural gas deacidification device, a gas deacidification flow path is formed on the natural gas deacidification device, the natural gas deacidification device comprises a plurality of gas treatment devices arranged on the gas deacidification flow path, a bearing platform, a connecting tower support and a driving mechanism, the bearing platform can be movably arranged, and the connecting tower support is arranged on the bearing platform. The plurality of gas treatment devices comprise treatment tower groups arranged on the connecting tower bracket, the connecting tower bracket can be movably mounted relative to the bearing platform, so that treatment towers in the treatment tower groups can be switched between a horizontal state and a vertical state, and the driving mechanism is used for driving the connecting tower bracket to move. According to the arrangement, the treatment tower set is switched between the horizontal state and the vertical state, so that the road transportation requirement and the deacidification process requirement are met respectively, rapid switching between natural gas well sites can be achieved, the transportation cost and the time cost are low, and rapid well mouth transfer and rapid production can be achieved.

Description

Technical Field

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

[0002] The deacidification process is a commonly used purification process in the wellhead natural gas processing process, which requires the removal of CO2 and H2S in the natural gas. At present, the most commonly used deacidification process is the alcohol amine method. The raw gas flows upstream in the absorption tower and fully contacts with the amine liquid flowing down from the top of the tower to reduce the CO2 concentration in the raw gas to below 50ppm. The rich amine liquid (containing CO2) enters the lean-rich liquid heat exchanger to increase the temperature, and then enters the regeneration tower for superheat regeneration. The regenerated lean liquid is cooled by the lean-rich liquid heat exchanger and then enters the upper part of the absorption tower for reuse, thus completing the entire cycle.

[0003] At present, for the recovery of scattered gas, vented air and other natural gas, due to the small amount of gas in the gas well, the purification and processing equipment is required to be able to achieve rapid transfer and rapid production. The absorption tower and regeneration tower in the deacidification equipment are high tower equipment with a diameter of 600mm-800mm and a height of 10m-15m. In order to meet the requirements of road transportation, they are often disassembled and transported horizontally from the manufacturing plant, and then installed vertically by a crane after the goods arrive at the site.

[0004] However, the existing equipment has very high transportation and time costs. Each time the equipment is transferred, it needs to be disassembled, transported, and then hoisted, which makes it impossible to achieve rapid transfer of the wellhead and rapid production. Utility Model Content

[0005] The main purpose of the utility model is to propose a natural gas deacidification device, aiming to solve the problem that the existing natural gas deacidification device has high transportation cost and time cost, and each time the equipment is transferred, it needs to be disassembled, transported, and then hoisted, and it is impossible to achieve rapid transfer of the wellhead and rapid production.

[0006] In order to achieve the above-mentioned object, the utility model proposes a natural gas deacidification device, on which a gas deacidification flow path is formed, and a plurality of gas processing equipment are arranged on the gas deacidification flow path, and the natural gas deacidification device comprises:

[0007] The carrying platform can be moved and set;

[0008] A connecting tower support, wherein the plurality of gas processing equipments include a processing tower group arranged on the connecting tower support, and the connecting tower support can be movably installed relative to the carrying platform so that the processing towers in the processing tower group can be switched between a horizontal state and a vertical state; and

[0009] The driving mechanism is used to drive the connecting tower support to move.

[0010] Optionally, the processing tower group includes:

[0011] Adsorption towers to absorb acid gases from natural gas; and,

[0012] The regeneration tower is used to regenerate the acidic absorption liquid from a rich liquid rich in acid gas to a lean liquid containing no or a small amount of acid gas, and the regeneration tower and the adsorption tower are synchronously operated.

[0013] Optionally, the plurality of gas processing devices further include:

[0014] A raw gas processing mechanism, connected to the adsorption tower, for inputting the raw gas after heat exchange into the bottom of the adsorption tower and outputting purified gas from the top thereof;

[0015] A lean and rich liquid processing mechanism is connected to the adsorption tower and the regeneration tower, and is used to transport the lean liquid regenerated at the bottom of the regeneration tower to the top of the adsorption tower, and to return the rich liquid at the bottom of the adsorption tower to the top of the regeneration tower; and

[0016] an acid gas treatment mechanism, which is in communication with the regeneration tower and is used to discharge the acid gas outputted from the regeneration tower after treatment;

[0017] The raw gas processing mechanism, the lean-rich liquid processing mechanism and the acid gas processing mechanism are all arranged on the carrying platform.

[0018] Optionally, the raw gas processing mechanism includes:

[0019] a raw gas heat exchanger, used for exchanging heat between the raw gas and the purified gas; and,

[0020] The purified gas separator is connected to the raw gas heat exchanger, and the purified gas separator is used to pre-treat the purified gas output from the raw gas heat exchanger.

[0021] Optionally, the lean and rich liquid processing mechanism comprises:

[0022] a mechanical filter, connected to the bottom end of the adsorption tower and used for rich liquid to flow into; and,

[0023] The lean and rich liquid heat exchanger is connected to the mechanical filter and the regeneration tower, and is used to return the filtered rich liquid to the top of the regeneration tower, and output the lean liquid regenerated at the bottom of the regeneration tower after heat exchange.

[0024] Optionally, the lean and rich liquid processing mechanism further comprises:

[0025] A solution buffer tank is connected to the lean and rich liquid heat exchanger and is used to contain the lean liquid after heat exchange;

[0026] a lean liquid pump, connected to the solution buffer tank, for pressurizing the lean liquid; and

[0027] The lean liquid cooler is connected to the lean liquid pump and is used for cooling the lean liquid and conveying the cooled lean liquid to the top of the adsorption tower.

[0028] Optionally, the acid gas processing mechanism comprises:

[0029] an acid gas cooler, connected to the top of the regeneration tower, for cooling the acid gas distilled from the top of the regeneration tower; and

[0030] The acid gas separator is connected to the acid gas cooler and is used to separate liquid water from the acid gas and output the acid gas.

[0031] Optionally, a deacidification skid is provided on the carrying platform, and the deacidification skid is used to carry the raw gas processing mechanism, the lean and rich liquid processing mechanism and the acid gas processing mechanism.

[0032] Optionally, the carrying platform includes a vehicle body and a deacidification skid frame, and the deacidification skid frame is fixedly arranged on the vehicle body;

[0033] The connecting tower bracket is movably installed on the vehicle body and avoids the deacidification skid frame.

[0034] Optionally, the driving mechanism includes a hydraulic rod, one end of which is connected to the supporting platform, and the other end of which is connected to the connecting tower bracket, and the hydraulic rod is telescopically arranged along its length direction to drive the processing tower group to switch between the horizontal state and the vertical state.

[0035] In the technical solution provided by the utility model, when the natural gas deacidification device is in the process of transportation, the carrying platform can drive the connecting tower support and the processing tower group in the horizontal state to move; when the natural gas deacidification device moves to the natural gas wellhead, if natural gas deacidification work is required, the driving mechanism works to drive the connecting tower support to move, and the connecting tower support can drive the processing tower group to move so that it switches from the horizontal state to the vertical state, and the natural gas deacidification device starts to work, and the raw gas to be treated in the natural gas wellhead is introduced into the gas deacidification flow path, and is successively processed by the processing tower group and the remaining multiple gas processing equipment to output the purified gas after the treatment. After the deacidification work is completed, the driving mechanism works again to drive the connecting tower support to move, and the connecting tower support drives the processing tower group to move again, so that the processing tower group switches back to the horizontal state for easy transportation. In this arrangement, the connecting tower bracket and activity are driven by the driving mechanism, thereby driving the processing tower group to switch between the horizontal state and the vertical state, so as to meet the road transportation requirements and the deacidification process requirements respectively. When transferring, no additional disassembly and lifting work is required, and it can be quickly switched between natural gas well sites. The transportation cost and time cost are low, and rapid transfer of the wellhead and rapid production can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1 A three-dimensional schematic diagram of an embodiment of a natural gas deacidification device provided by the utility model;

[0038] Figure 2 for Figure 1 Schematic diagram of the deacidification process flow of the natural gas deacidification unit.

[0039] Description of Figure Numbers:

[0040] Label name Label name 100 Natural gas deacidification unit 51 Raw gas heat exchanger 1 Loading platform 52 Purified gas separator 11 Deacidification skid 6 Lean and rich liquid treatment mechanism 12 Body 61 Mechanical filter 2 Attaching the tower bracket 62 Lean and rich liquid heat exchanger 3 Treatment tower group 63 Solution buffer tank 31 Adsorption tower 64 Lean liquid pump 32 Regeneration Tower 65 Lean liquid cooler 4 Driving mechanism 7 Acid gas treatment agency 41 Hydraulic rod 71 Acid gas cooler 5 Raw gas processing mechanism 72 Acid gas separator

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0045] At present, the existing equipment has very high transportation and time costs. Each time the equipment is transferred, it needs to be disassembled, transported, and then hoisted. It is impossible to achieve rapid transfer of the wellhead and rapid production, which poses a high problem.

[0046] In order to solve the above problems, the utility model provides a natural gas deacidification device 100. Figure 1 to Figure 2 This is a specific embodiment of the natural gas deacidification device provided by the utility model.

[0047] See also Figure 1 to Figure 2A gas deacidification flow path is formed on the natural gas deacidification device 100, and a plurality of gas processing equipment is arranged on the gas deacidification flow path. The natural gas deacidification device 100 includes a carrying platform 1, a connecting tower support 2 and a driving mechanism 4. The carrying platform 1 can be movably arranged. The plurality of gas processing equipment includes a processing tower group 3 arranged on the connecting tower support 2. The connecting tower support 2 can be movably installed relative to the carrying platform 1 so that the processing towers in the processing tower group 3 can be switched between a horizontal state and a vertical state. The driving mechanism 4 is used to drive the connecting tower support 2 to move.

[0048] In the technical solution provided by the utility model, when the natural gas deacidification device 100 is in the process of transportation, the carrying platform 1 can drive the connecting tower support 2 and the processing tower group 3 in the horizontal state to move; when the natural gas deacidification device 100 moves to the natural gas wellhead, if natural gas deacidification work is required, the driving mechanism 4 works to drive the connecting tower support 2 to move, and the connecting tower support 2 can drive the processing tower group 3 to move, so that it switches from the horizontal state to the vertical state, and the natural gas deacidification device 100 starts to work, and the raw gas to be treated in the natural gas wellhead is introduced into the gas deacidification flow path, and is successively processed by the processing tower group 3 and the remaining multiple gas processing equipment to output the purified gas after the treatment. After the deacidification work is completed, the driving mechanism 4 works again to drive the connecting tower support 2 to move, and the connecting tower support 2 drives the processing tower group 3 to move again, so that the processing tower group 3 switches back to the horizontal state for easy transportation. In this arrangement, the connecting tower bracket 2 and the activity are driven by the driving mechanism 4, thereby driving the processing tower group 3 to switch between the horizontal state and the vertical state, so as to meet the road transportation requirements and the deacidification process requirements respectively. When transferring, no additional disassembly and lifting work is required, and it can be quickly switched between natural gas well sites, with low transportation and time costs, and can achieve rapid transfer of wellheads and rapid production.

[0049] It should be noted that the utility model does not limit the specific structure of the driving mechanism 4. In one embodiment of the utility model, the driving mechanism 4 includes a hydraulic rod 41, one end of the hydraulic rod 41 is connected to the bearing platform 1, and the other end of the hydraulic rod 41 is connected to the connecting tower support 2. The hydraulic rod 41 is telescopically arranged along its length direction to drive the processing tower group 3 to switch between the horizontal state and the vertical state. In this way, when the natural gas deacidification work needs to be carried out, the hydraulic rod 41 is extended along its length direction to lift the connecting tower support 2, so that the connecting tower support 2 drives the processing tower group 3 to move, so that the processing tower group 3 switches to the vertical state to meet the deacidification process requirements; when the natural gas deacidification work is completed, the hydraulic rod 41 shrinks along its length direction to put down the connecting tower support 2, so that the connecting tower support 2 drives the processing tower group 3 to move, so that the processing tower group 3 switches to the horizontal state, meets the road transportation requirements, and is convenient for transportation to another natural gas wellhead.

[0050] In another embodiment of the utility model, the driving mechanism 4 may further include a driving gear and a transmission gear, the transmission gear is fixedly connected to the connecting tower bracket 2 and can rotate coaxially with the connecting tower bracket 2, the driving gear and the transmission gear are in transmission meshing engagement and are used to be driven by a motor, when the processing tower group 3 needs to be switched from the horizontal state to the vertical state, the motor works forward to drive the driving gear to rotate forward, the driving gear drives the transmission gear to rotate, and then drives the connecting tower bracket 2 to rotate, so as to switch the processing tower group 3 to the vertical state; when the processing tower group 3 needs to be switched from the vertical state to the horizontal state, the motor works reversely to drive the driving gear to reverse, the driving gear drives the transmission gear to rotate, and then mobilizes the connecting tower bracket 2 to rotate, so as to switch the processing tower group 3 to the horizontal state.

[0051] Of course, in other embodiments of the present invention, the driving mechanism 4 can also be configured as other structural forms, which can be selected according to actual needs during the actual configuration, and the present invention does not impose any limitation on this.

[0052] Furthermore, the treatment tower group 3 includes an adsorption tower 31 and a regeneration tower 32. The adsorption tower 31 is used to adsorb acidic gases in natural gas, and the regeneration tower 32 is used to regenerate the acidic absorption liquid from a rich liquid rich in acidic gases to a lean liquid containing no or a small amount of acidic gases, and the regeneration tower 32 and the adsorption tower 31 operate synchronously.

[0053] It can be understood that when the adsorption tower 31 is in the vertical state, the bottom end of the adsorption tower 31 is used to introduce the raw gas to be treated, and the top end is used to introduce the lean liquid containing no or a small amount of acidic gas. The lean liquid passes through the adsorption tower 31 from top to bottom under the action of gravity. Since the gas density of the raw gas is less than the gas density of the air, the raw gas will pass through the adsorption tower 31 from bottom to top. In this way, the lean liquid can fully contact with the raw gas, and the carbon dioxide in the raw gas is fully absorbed into the liquid phase by the lean liquid to obtain the treated purified gas. The lean liquid that absorbs enough carbon dioxide is converted into rich liquid, and the rich liquid will flow to the regeneration tower 32 for regeneration to discharge the carbon dioxide in the rich liquid and convert it back into lean liquid containing no or a small amount of acidic gas, so that it can be introduced into the adsorption tower 31 again for circulation.

[0054] Furthermore, before the raw gas is introduced into the adsorption tower 31 and after the purifier is output from the adsorption tower 31, pretreatment and post-treatment are required respectively. The plurality of gas processing equipment also includes a raw gas processing mechanism 5, which is arranged on the pure platform and connected to the adsorption tower 31, so as to input the heat-exchanged raw gas into the bottom of the adsorption tower 31 and output the purified gas from the top thereof.

[0055] Specifically, the raw gas processing mechanism 5 includes a raw gas heat exchanger 51 and a purified gas separator 52. The raw gas heat exchanger 51 is used to exchange heat between the raw gas and the purified gas. The purified gas separator 52 is connected to the raw gas heat exchanger 51. The purified gas separator is used to pre-treat the purified gas output from the raw gas heat exchanger 51.

[0056] It should be noted that in the natural gas deacidification process, the raw gas needs to be deacidified in a high-temperature environment. Therefore, the raw gas needs to be heated before being introduced into the adsorption tower 31. At the same time, since the purified gas output from the adsorption tower 31 is a high-temperature purified gas, the purified gas and the raw gas can directly exchange heat in the raw gas heat exchanger 51 to increase the temperature of the raw gas.

[0057] In addition, the purified gas output from the adsorption tower 31 also contains condensate impurities. Therefore, after the purified gas passes through the raw gas heat exchanger 51 for heat exchange, it needs to be passed into the purified gas separator 52 to separate the condensate in the purified gas, and then sent to the downstream dehydration and mercury removal equipment.

[0058] In order to ensure that the rich liquid can be smoothly converted into the lean liquid so that it can be passed into the adsorption tower 31 for recycling again, the plurality of gas processing equipment also includes a lean and rich liquid processing mechanism 6, which is arranged on the supporting platform 1 and connects the adsorption tower 31 and the regeneration tower 32, so as to transport the lean liquid regenerated at the bottom of the regeneration tower 32 to the top of the adsorption tower 31, and return the rich liquid at the bottom of the adsorption tower 31 to the top of the regeneration tower 32.

[0059] In the utility model, the lean and rich liquid processing mechanism 6 includes a mechanical filter 61 and a lean and rich liquid heat exchanger 62. The mechanical filter 61 is connected to the bottom end of the adsorption tower 31 and is used for rich liquid to flow in. The lean and rich liquid heat exchanger 62 is connected to the mechanical filter 61 and the regeneration tower 32 to return the filtered rich liquid to the top of the regeneration tower 32 and output the lean liquid regenerated at the bottom of the regeneration tower 32 after heat exchange.

[0060] It can be understood that the lean liquid is in direct contact with the raw gas in the adsorption tower 31 to absorb the carbon dioxide gas in the raw gas to convert it into rich liquid. At the same time, the rich liquid will also carry the solid impurities in the raw gas. Therefore, the rich liquid output from the adsorption tower 31 first needs to be passed into the mechanical filter 61 to filter the solid impurities, and then passed into the lean-rich liquid heat exchanger 62 to exchange heat with the lean liquid output from the regeneration tower 32.

[0061] It should be noted that in the process of converting the acidic absorption liquid from rich liquid to lean liquid, the absorbed carbon dioxide needs to be discharged, and the gas solubility of carbon dioxide is inversely correlated with the liquid temperature. Therefore, the rich liquid needs to be regenerated in a high-temperature environment. Therefore, it is necessary to perform a heating treatment before passing into the regeneration tower 32. At the same time, the lean liquid output from the regeneration tower 32 is a high-temperature lean liquid. Therefore, the rich liquid and the lean liquid can be directly heat exchanged in the lean-rich liquid heat exchanger 62 to increase the temperature of the rich liquid.

[0062] Furthermore, the lean-rich liquid processing mechanism 6 also includes a solution buffer tank 63, a lean liquid pump 64 and a lean liquid cooler 65. The solution buffer tank 63 is connected to the lean-rich liquid heat exchanger 62 to accommodate the lean liquid after heat exchange. The lean liquid pump 64 is connected to the solution buffer tank 63 to pressurize the lean liquid. The lean liquid cooler 65 is connected to the lean liquid pump 64 to cool the lean liquid and transport the cooled lean liquid to the top of the adsorption tower 31. In this way, the lean liquid after heat exchange first enters the solution buffer tank 63, and then flows into the lean liquid cooler 65 after being pressurized by the lean liquid pump 64. The lean liquid cooler 65 will further cool the lean liquid, and finally pass it to the top of the absorption tower to absorb the carbon dioxide gas in the raw gas.

[0063] In addition, the carbon dioxide gas separated from the rich liquid in the regeneration tower 32 needs to undergo a post-processing process before it can be discharged into the atmosphere. Based on this, the multiple gas processing mechanisms also include an acid gas processing mechanism 7, which is arranged on the supporting platform 1 and connected to the regeneration tower 32, so as to discharge the acid gas output from the regeneration tower 32 after treatment.

[0064] Specifically, the acid gas treatment mechanism 7 includes an acid gas cooler 71 and an acid gas separator 72. The acid gas cooler 71 is connected to the top of the regeneration tower 32 to cool the acid gas distilled from the top of the regeneration tower 32. The acid gas separator 72 is connected to the acid gas cooler 71 to separate liquid water from the acid gas and output the acid gas.

[0065] It can be understood that since the rich liquid needs to be in a high-temperature environment when it is regenerated in the regeneration tower 32, the carbon dioxide gas discharged from the rich liquid is also high-temperature carbon dioxide gas, and there are other impurities in the gas. Before the carbon dioxide gas is discharged, it is necessary to first pass it into the acid gas cooler 71 for cooling treatment, and at the same time condense the water vapor in the carbon dioxide gas, and then pass the carbon dioxide gas into the acid gas separator 72 to separate the liquid water obtained by condensation, and finally lead the carbon dioxide to a high point for discharge.

[0066] Furthermore, in order to improve the centralization and stability of the natural gas deacidification device 100, a deacidification skid 11 is provided on the carrying platform 1, and the deacidification skid 11 is used to carry the raw gas processing mechanism 5, the lean and rich liquid processing mechanism 6, and the acid gas processing mechanism 7. In this way, the deacidification skid 11 can fix the raw gas processing mechanism 5, the lean and rich liquid processing mechanism 6, and the acid gas processing mechanism 7, and can also integrate them on the carrying platform 1.

[0067] Specifically, the carrying platform 1 includes a vehicle body 12 and a deacidification skid frame 11 , the deacidification skid frame 11 is fixedly mounted on the vehicle body 12 , and the connecting tower bracket 2 is movably mounted on the vehicle body 12 and is arranged to avoid the deacidification skid frame 11 .

[0068] It can be understood that the vehicle body 12 includes a semi-trailer body 12, and the deacidification skid frame 11 and the connecting tower bracket 2 are both arranged on the semi-trailer body 12, so that after the deacidification work of the natural gas deacidification device 100 is completed, the semi-trailer can be quickly started to transport the natural gas deacidification device 100, thereby realizing the rapid transfer of the natural gas deacidification device 100 between natural gas well sites.

[0069] In summary, the deacidification process of the natural gas deacidification device 100 proposed in the utility model is as follows: the raw gas is introduced into the raw gas heat exchanger 51 to exchange heat with the purified gas from the top of the adsorption tower 31 to obtain high-temperature raw gas, the high-temperature raw gas is introduced into the adsorption tower 31 from the bottom end of the adsorption tower 31, and moves upward to fully contact with the lean liquid introduced into the top of the adsorption tower 31 and moving downward, the carbon dioxide in the high-temperature raw gas is absorbed by the lean liquid and enters the absorption tower, and the unabsorbed components are output from the top of the absorption tower to form purified gas, the purified gas is introduced into the raw gas heat exchanger 51 to cool down and can be condensed to precipitate condensate, and then introduced into the purified gas separator 52 to separate the condensate and send it to the downstream dehydration and mercury removal equipment, the lean liquid that absorbs carbon dioxide is converted into rich liquid, and the rich liquid is output from the bottom end of the adsorption tower 31. After solid impurities are removed by the mechanical filter 61, the liquid enters the lean-rich liquid heat exchanger 62, exchanges heat with the lean liquid flowing out of the bottom of the regeneration tower 32 in the lean-rich liquid heat exchanger 62 to obtain high-temperature rich liquid, and the high-temperature rich liquid is introduced into the top of the regeneration tower 32, and undergoes gas regeneration in the regeneration tower 32 to obtain lean liquid, until the carbon dioxide in the lean liquid reaches the target, and then is output from the bottom of the regeneration tower 32, cooled by the lean-rich liquid heat exchanger 62, enters the solution buffer tank 63, is pressurized by the lean liquid pump 64, and further cooled by the lean liquid cooler 65 to the top of the absorption tower to absorb acidic gas, thereby realizing the circulation of the acidic absorption solution, and the carbon dioxide distilled out of the top of the regeneration tower 32 is cooled by the acid gas cooler 71 and enters the acid gas separator 72, and the gas after the liquid water is separated is discharged to a high point.

[0070] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A natural gas deacidification device, characterized in that: A gas deacidification flow path is formed on the natural gas deacidification device (100), and a plurality of gas processing devices are arranged on the gas deacidification flow path. The natural gas deacidification device (100) comprises: The carrying platform (1) can be moved; A connecting tower support (2), wherein the plurality of gas processing devices include a processing tower group (3) arranged on the connecting tower support (2), and the connecting tower support (2) can be movably installed relative to the supporting platform (1) so that the processing towers in the processing tower group (3) can be switched between a horizontal state and a vertical state; and A driving mechanism (4) is used to drive the connecting tower support (2) to move.

2. The natural gas deacidification device according to claim 1, characterized in that: The treatment tower group (3) comprises: an adsorption tower (31) for adsorbing acidic gases in natural gas; and The regeneration tower (32) is used to regenerate the acidic absorption liquid from a rich liquid rich in acidic gas to a lean liquid containing no or a small amount of acidic gas, and the regeneration tower (32) and the adsorption tower (31) are operated synchronously.

3. The natural gas deacidification device according to claim 2, characterized in that: The plurality of gas processing devices further comprises: A raw gas processing mechanism (5) is connected to the adsorption tower (31) and is used to input the raw gas after heat exchange into the bottom of the adsorption tower (31) and output purified gas from the top thereof; a lean and rich liquid processing mechanism (6) connected to the adsorption tower (31) and the regeneration tower (32) for transporting the lean liquid regenerated at the bottom of the regeneration tower (32) to the top of the adsorption tower (31), and returning the rich liquid at the bottom of the adsorption tower (31) to the top of the regeneration tower (32); and an acid gas treatment mechanism (7) connected to the regeneration tower (32) for discharging the acid gas output from the regeneration tower (32) after treatment; The raw gas processing mechanism (5), the lean and rich liquid processing mechanism (6) and the acid gas processing mechanism (7) are all arranged on the supporting platform (1).

4. The natural gas deacidification device according to claim 3, characterized in that: The raw gas processing mechanism (5) comprises: a raw gas heat exchanger (51) for exchanging heat between the raw gas and the purified gas; and The purified gas separator (52) is connected to the raw gas heat exchanger (51), and is used to pre-treat the purified gas output from the raw gas heat exchanger.

5. The natural gas deacidification device according to claim 3, characterized in that: The lean and rich liquid processing mechanism (6) comprises: a mechanical filter (61) connected to the bottom end of the adsorption tower (31) and used for rich liquid to flow in; and The lean-rich liquid heat exchanger (62) is connected to the mechanical filter (61) and the regeneration tower (32) to return the filtered rich liquid to the top of the regeneration tower (32) and to output the lean liquid regenerated at the bottom of the regeneration tower (32) after heat exchange.

6. The natural gas deacidification device according to claim 5, characterized in that: The lean and rich liquid processing mechanism (6) further comprises: A solution buffer tank (63) is connected to the lean-rich liquid heat exchanger (62) and is used to contain the lean liquid after heat exchange; a lean liquid pump (64), connected to the solution buffer tank (63), for pressurizing the lean liquid; and The lean liquid cooler is connected to the lean liquid pump (64) and is used to cool the lean liquid and transport the cooled lean liquid to the top of the adsorption tower (31).

7. The natural gas deacidification device according to claim 3, characterized in that: The acid gas treatment mechanism (7) comprises: an acid gas cooler (71) connected to the top of the regeneration tower (32) to cool the acid gas distilled from the top of the regeneration tower (32); and The acid gas separator (72) is connected to the acid gas cooler (71) and is used to separate liquid water from the acid gas and output the acid gas.

8. The natural gas deacidification device according to claim 3, characterized in that: The carrying platform (1) is provided with a deacidification skid frame (11), and the deacidification skid frame (11) is used to carry the raw gas processing mechanism (5), the lean and rich liquid processing mechanism (6) and the acid gas processing mechanism (7).

9. The natural gas deacidification device according to claim 1, characterized in that: The carrying platform (1) comprises a vehicle body (12) and a deacidification skid frame (11), wherein the deacidification skid frame (11) is fixedly arranged on the vehicle body (12); The connecting tower support (2) is movably mounted on the vehicle body (12) and is arranged to avoid the deacidification skid frame (11).

10. The natural gas deacidification device according to claim 1, characterized in that: The driving mechanism (4) comprises a hydraulic rod (41), one end of the hydraulic rod (41) is connected to the bearing platform (1), and the other end of the hydraulic rod (41) is connected to the connecting tower support (2), and the hydraulic rod (41) is telescopically arranged along its length direction to drive the processing tower group (3) to switch between the horizontal state and the vertical state.

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