A gas separation device for physical solvent decarburization

Abstract

The utility model relates to separating equipment technical field, and disclose a kind of gas separation device for physical solvent method decarburization, including separating equipment ontology, separating equipment ontology is sequentially installed from top to bottom with pre-water tower, main adsorption tower, regeneration tower and base, pre-water tower one side is equipped with for gas inlet air inlet, the lean liquid for carbon dioxide absorption is filled in the regeneration tower, the main adsorption tower and the outer wall of regeneration tower are equipped with second support seat and first support seat for bearing respectively, the first support seat top is equipped with for the flow guide component of lean liquid reflux, the second support seat top is equipped with filter box. By being equipped with adjusting component, can be according to the concentration of lean liquid adaptive adjustment filter hole diameter, high concentration lean liquid uses macropore filtration, can avoid blockage, guarantee flow stability, low concentration lean liquid uses small aperture filtration, improve filtration purity.

Description

Technical Field

[0001] This utility model relates to the field of separation equipment technology, specifically a gas separation device for physical solvent decarbonization. Background Technology

[0002] Physical solvent decarbonization technology is a core process that separates gas components based on the difference in solubility of the components in the solvent. Its equipment design and application background are closely related to the needs of industrial gas purification.

[0003] However, existing separation equipment requires filtration of the lean liquor before use during the decarbonization process. However, current filtration equipment has a significant drawback: its pore size is fixed and lacks adjustment capability. When processing high-concentration lean liquor, the fixed pore size is easily clogged, leading to a significant decrease in filtration efficiency; while when processing low-concentration lean liquor, the inability to adapt the pore size makes it difficult to thoroughly remove impurities, ultimately affecting the purity of the lean liquor. Therefore, this invention provides a gas separation device for physical solvent-based decarbonization to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a gas separation device for decarbonization using physical solvents, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas separation device for physical solvent decarbonization includes a separation equipment body. From top to bottom, the separation equipment body is equipped with a pre-separation tower, a main adsorption tower, a regeneration tower, and a base. An inlet for gas entry is installed on one side of the pre-separation tower. The regeneration tower is filled with a lean solution for carbon dioxide absorption. A second support base and a first support base are respectively installed on the outer walls of the main adsorption tower and the regeneration tower. A flow guide component for lean solution reflux is installed on the top of the first support base. A filter box is installed on the top of the second support base. The input end of the flow guide component is connected to the regeneration tower via a pipe, and the output end of the flow guide component is connected to the filter box via a pipe. A filter component for lean solution purification is installed in the middle of the inner wall of the filter box, and a cleaning component for cleaning the filter component is installed on the top of the inner wall of the filter box. An adjustment component for adjusting the pore size of the filter component is installed on one side of the inner wall of the filter box. A concentration detector for measuring the lean solution concentration is installed inside the flow guide component. A reflux pipe connected to the main adsorption tower is installed at one end of the filter box.

[0007] As a further embodiment of this utility model, the flow guiding assembly includes a measuring device, a water pump, and a flow meter. The water pump is installed on the top outer wall of the first support base, and a flow meter is installed at the output end of the water pump. An input pipe connected to the regeneration tower is installed at the bottom end of the flow meter, and an output pipe is installed at the output end of the water pump. The measuring device is installed on the outer wall of the main adsorption tower, and the measuring device is connected to the flow meter via an electrical signal.

[0008] As a further embodiment of this utility model, the filter assembly includes a filter plate and a filter sleeve. The filter plate is installed in the middle of the inner wall of the filter box, and a partition is installed between the filter plate and the filter box. The top of the filter plate has a plurality of through holes arranged in a matrix, and the filter sleeve is installed on the inner wall of the through holes.

[0009] As a further embodiment of this utility model, the two ends of the output pipe are respectively connected to a first diversion pipe and a second diversion pipe, the second diversion pipe is connected to the inner wall of the bottom of the filter box, and the first diversion pipe is connected to the top of the filter plate.

[0010] As a further embodiment of this utility model, the regulating component includes an air pump, a collection chamber, and an air transmission pipe. The air pump is installed on one side of the top of the filter plate and is electrically connected to the concentration detector. The collection chamber is installed on the inner wall of the filter plate, and the air pump is connected to the collection chamber through a pipe. The air transmission pipe is arranged linearly and connected to one side of the collection chamber.

[0011] As a further embodiment of this utility model, the adjusting component also includes an elastic collar, which is installed at the axial position of the filter sleeve. The inner wall of the filter sleeve has an annular cavity. The air transmission pipe is connected to the annular cavities on two adjacent filter sleeves. Multiple guide cavities arranged in a circular pattern are opened at both the upper and lower ends of the annular cavity. A sliding rod is slidably connected to the inner wall of the guide cavity, and one end of the sliding rod is in contact with the elastic collar.

[0012] As a further embodiment of this utility model, the impurity removal component includes an electric push rod and a scraper. One end of the electric push rod is installed on the inner wall of the filter box, and the scraper is installed on the telescopic end of the electric push rod and slidably connected to the top of the filter plate.

[0013] As a further embodiment of this utility model, the impurity removal component also includes a collection chamber and an impurity discharge pipe. The collection chamber is installed between the filter plate and the filter box, one end of the impurity discharge pipe is connected to the inner wall of the bottom of the collection chamber, and the other end of the impurity discharge pipe is installed outside the filter box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When using the device of this utility model, the pore size of the filter can be adaptively adjusted according to the concentration of the lean liquid through the set adjustment component. Large pore size filtration is used for high concentration lean liquid to avoid clogging and ensure flow stability, while small pore size filtration is used for low concentration lean liquid to improve filtration purity.

[0016] 2. When the device of this utility model is used, the impurity removal component can clean and transport the filtered impurities, avoiding the accumulation of impurities that could cause blockage at the filter sleeve and affect the filtration efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a gas separation device for decarbonization using a physical solvent method.

[0018] Figure 2 This is a schematic diagram of the flow guiding component in a gas separation device for decarbonization using a physical solvent method.

[0019] Figure 3 This is a cross-sectional view of the filter box in a gas separation device for decarbonization using a physical solvent method.

[0020] Figure 4 This is a schematic diagram of the filter plate in a gas separation device for decarbonization using a physical solvent method.

[0021] Figure 5 This is a schematic diagram of the regulating component in a gas separation device for decarbonization using a physical solvent method.

[0022] Figure 6 This is a schematic diagram of the filter sleeve in a gas separation device for decarbonization using a physical solvent method.

[0023] Figure 7 This is a cross-sectional view of the filter sleeve in a gas separation device for decarbonization using a physical solvent method.

[0024] Figure 8 This is a schematic diagram of the scraper section in a gas separation device for decarbonization using a physical solvent method.

[0025] In the diagram: 10. Base; 11. Pre-separation water tower; 12. Main adsorption tower; 13. Regeneration tower; 14. First support; 15. Measuring device; 16. Air inlet; 17. Second support;

[0026] 20. Water pump; 21. Flow meter; 22. Inlet pipe; 23. Outlet pipe; 24. First branch pipe; 25. Second branch pipe;

[0027] 30. Filter box; 31. Baffle plate; 32. Return pipe;

[0028] 40. Filter plate; 41. Filter sleeve; 42. Annular cavity; 43. Guide cavity; 44. Sliding rod; 45. Elastic collar;

[0029] 50. Air pump; 51. Collection chamber; 52. Air transmission pipe;

[0030] 60. Collection bin; 61. Waste discharge pipe;

[0031] 70. Scraper; 71. Electric actuator. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 - Figure 4 In this embodiment of the present invention, a gas separation device for decarbonization using a physical solvent method includes a separation equipment body. The separation equipment body is sequentially equipped with a pre-separation water tower 11, a main adsorption tower 12, a regeneration tower 13, and a base 10 from top to bottom. An air inlet 16 for gas entry is installed on one side of the pre-separation water tower 11. The bottom end of the pre-separation water tower 11 is connected to the main adsorption tower 12. A baffle plate group is installed inside the pre-separation water tower 11, and gas-liquid separation is achieved by the flow of gas through the baffle plate group. A stepped ring packing layer is installed inside the main adsorption tower 12, and carbon dioxide in the gas is absorbed through the stepped ring packing layer. The regeneration tower 13 is filled with lean liquid for carbon dioxide absorption, and a cooler for cooling the lean liquid is installed inside the regeneration tower 13. The lean liquid is then recycled after being cooled by the cooler.

[0034] The outer walls of the main adsorption tower 12 and the regeneration tower 13 are respectively equipped with a second support 17 and a first support 14 for bearing loads. The upper and lower ends of the first support 14 and the second support 17 are fixedly connected with arc-shaped mounting plates. The mounting plates on the first support 14 and the second support 17 are respectively installed on the outer walls of the regeneration tower 13 and the main adsorption tower 12 by bolts. The top of the first support 14 is equipped with a flow guide assembly for lean liquid reflux. The top of the second support 17 is equipped with a filter box 30. The input end of the flow guide assembly is connected to the regeneration tower 13 through a pipe, and the output end of the flow guide assembly is connected to the filter box 30 through a pipe. The flow guide assembly is used to transport the cooled lean liquid into the filter box 30.

[0035] A filter assembly for purifying lean liquor is installed in the middle of the inner wall of the filter box 30. After the lean liquor enters the filter box 30 through the flow guide assembly, the filter assembly can filter the lean liquor. A cleaning assembly for cleaning the filter assembly is installed at the top of the inner wall of the filter box 30. The cleaning assembly removes impurities filtered by the filter assembly to prevent impurities from clogging the filter assembly and affecting the channel of the lean liquor, thus affecting the filtration effect of the lean liquor. An adjustment assembly for adjusting the pore size of the filter assembly is installed on one side of the inner wall of the filter box 30. A concentration detector for measuring the concentration of lean liquor is installed in the flow guide assembly. The pore size of the filter assembly can be dynamically adjusted according to the concentration of the lean liquor to improve the filtration effect of the lean liquor. The concentration detector is existing technology and will not be described in detail here. A return pipe 32 connected to the main adsorption tower 12 is installed at one end of the filter box 30. The return pipe 32 is used to transport the filtered lean liquor to the stepped ring packing layer in the main adsorption tower 12.

[0036] The flow guiding assembly includes a measuring device 15, a water pump 20, and a flow meter 21. The water pump 20 is installed on the top outer wall of the first support 14. The flow meter 21 is installed at the output end of the water pump 20. An input pipe 22 connected to the regeneration tower 13 is installed at the bottom end of the flow meter 21. An output pipe 23 is installed at the output end of the water pump 20. The measuring device 15 is installed on the outer wall of the main adsorption tower 12. A detection head is provided on the measuring device 15 and is located inside the main adsorption tower 12. The measuring device 15 communicates with the flow meter 21 via an electrical signal. When lean liquor needs to be delivered, water pump 20 is turned on. Water pump 20 draws lean liquor from regeneration tower 13 through input pipe 22 and flow meter 21 and discharges it from output pipe 23. Measuring device 15 detects the gas concentration in main adsorption tower 12 through detection head. Flow meter 21 receives electrical signal from measuring device 15 to control the amount of lean liquor drawn in. It can control the amount of lean liquor delivered according to the gas concentration, and thus control the ratio of lean liquor and semi-lean liquor in main adsorption tower 12 to adapt to decarbonization of gas with different concentrations.

[0037] The filtration assembly includes a filter plate 40 and a filter sleeve 41. The filter plate 40 is installed in the middle of the inner wall of the filter box 30. A partition plate 31 is installed between the filter plate 40 and the filter box 30. A rectangular groove is opened on the top of the filter plate 40. Multiple through holes are arranged in a matrix at the top groove of the filter plate 40. The filter sleeve 41 is installed on the inner wall of the through holes. The filter sleeve 41 has a hollow structure. The lean liquid entering the filter box 30 can pass through the filter sleeve 41 to filter out the impurities in the lean liquid. The filtered lean liquid can be transported to the main adsorption tower 12 through the return pipe 32 for carbon dioxide absorption.

[0038] The output pipe 23 has two forks at its tail end. The two forks at both ends of the output pipe 23 are respectively connected to the first branch pipe 24 and the second branch pipe 25. The second branch pipe 25 is connected to the bottom inner wall of the filter box 30, and the first branch pipe 24 is connected to the top of the filter plate 40. The diameter of the second branch pipe 25 is twice the diameter of the first branch pipe 24. A portion of the lean liquid flows directly out of the return pipe 32 through the second branch pipe 25, while the other portion of the lean liquid flows into the top of the filter plate 40 through the first branch pipe 24. After being filtered by the filter sleeve 41, it flows out of the return pipe 32. This method can filter a portion of the lean liquid, avoiding the high energy consumption of full filtration and effectively controlling the impurity concentration.

[0039] See Figure 4 - Figure 7 The regulating components include an air pump 50, a collecting chamber 51, and a gas transmission pipe 52. The air pump 50 is installed on one side of the top of the filter plate 40. The air pump 50 is located in the space enclosed by the filter box 30, the partition 31, and the filter plate 40 to prevent the lean liquid from corroding the air pump 50. The air pump 50 is electrically connected to the concentration detector. The collecting chamber 51 is installed on the inner wall of the filter plate 40. The collecting chamber 51 has a hollow structure. The air pump 50 is connected to the collecting chamber 51 through a pipe. The gas transmission pipe 52 is arranged linearly and connected to one side of the collecting chamber 51. The air pump 50 can adjust the amount of gas supplied to the collecting chamber 51 according to the signal detected by the concentration detector. The collecting chamber 51 delivers the gas through the gas transmission pipe 52.

[0040] The adjustment assembly also includes an elastic collar 45, which is installed on the axis of the filter sleeve 41. The inner wall of the filter sleeve 41 has an annular cavity 42. The air transmission pipe 52 is connected to the annular cavity 42 on two adjacent filter sleeves 41. The upper and lower ends of the annular cavity 42 are provided with multiple guide cavities 43 arranged in a circle. The inner wall of the guide cavity 43 is slidably connected to a sliding rod 44. One end of the sliding rod 44 is in contact with the elastic collar 45. When the gas in the air transmission pipe 52 is delivered into the annular cavity 42, the gas enters the guide cavity 43 and squeezes the sliding rod 44. The sliding rod 44 moves under the pressure of the gas and squeezes the elastic collar 45. The deformation of the elastic collar 45 under the pressure of the sliding rod 44 can adjust the diameter of the hole in the middle of the elastic collar 45.

[0041] See Figure 3 and Figure 8 The impurity removal component includes a scraper 70 and an electric actuator 71. One end of the electric actuator 71 is installed on the inner wall of the filter box 30, and the other end of the electric actuator 71 passes through the partition 31. The scraper 70 is installed on the telescopic end of the electric actuator 71 and slidably connected to the top of the filter plate 40. The bottom of the scraper 70 is provided with an inclined protrusion. When it is necessary to clean the impurities on the top of the filter plate 40, the electric actuator 71 is activated. The extension and retraction of the electric actuator 71 can drive the scraper 70 to slide on the top of the filter plate 40. The inclined protrusion at the bottom of the scraper 70 can scrape off the impurities on the top of the filter plate 40.

[0042] The impurity removal assembly also includes a collection chamber 60 and a discharge pipe 61. The collection chamber 60 is installed between the filter plate 40 and the filter box 30. The top of the collection chamber 60 is open. One end of the discharge pipe 61 is connected to the inner wall of the bottom of the collection chamber 60, and the other end of the discharge pipe 61 is installed outside the filter box 30. The impurities scraped off by the scraper 70 can be introduced into the collection chamber 60 along with the scraper 70, and the impurities in the collection chamber 60 can be discharged through the discharge pipe 61.

[0043] The working principle of this utility model is as follows: When decarbonization is required, external gas is transported to the pre-separation tower 11 through the air inlet 16. The gas baffle plate group flows to achieve gas-liquid separation. The separated gas can be transported to the main adsorption tower 12. At this time, the water pump 20 is turned on. The water pump 20 starts and inputs the lean liquid into the output pipe 23 through the input pipe 22 and the flow meter 21. The lean liquid is then transported to the filter box 30 through the first diversion pipe 24 and the second diversion pipe 25. The lean liquid at the first diversion pipe 24 is filtered by the filter sleeve 41 and then transported to the main adsorption tower 12 through the return pipe 32 along with the lean liquid at the second diversion pipe 25. The gas is decarbonized by the lean liquid.

[0044] When the gas is inside the main adsorption tower 12, the detection head on the measuring device 15 can detect the gas concentration and transmit the electrical signal to the flow meter 21. The flow meter 21 adjusts the amount of lean liquid delivered according to the gas concentration to control the ratio of lean liquid and semi-lean liquid in the main adsorption tower 12 to adapt to the decarbonization of gas with different concentrations.

[0045] When the lean liquid passes through the first diversion tube 24, the concentration detector in the first diversion tube 24 detects the concentration of the lean liquid. The detection result is transmitted to the air pump 50 through an electrical signal. The air pump 50 adjusts the amount of gas injected into the collection chamber 51 according to the concentration. The gas in the collection chamber 51 can then be delivered to the annular cavity 42 on each filter sleeve 41 through the gas transmission tube 52. The gas in the annular cavity 42 enters the guide cavity 43 and squeezes the sliding rod 44. The elastic collar 45 is deformed by the sliding rod 44, which adjusts the pore size of the elastic collar 45. Thus, the pore size of the filter can be adjusted according to the lean liquid concentration.

[0046] After filtering for a period of time, the electric push rod 71 is turned on. The extension and retraction of the electric push rod 71 drives the scraper 70 to move and clean the impurities on the top of the filter plate 40. The cleaned impurities fall into the collection chamber 60 as the scraper 70 moves and are discharged through the impurity discharge pipe 61.

[0047] When this utility model is in use, the adjustable component can adaptively adjust the pore size of the filter according to the concentration of the lean liquid. Large-pore filtration is used for high-concentration lean liquid to avoid clogging and ensure flow stability, while small-pore filtration is used for low-concentration lean liquid to improve filtration purity.

[0048] The impurity removal components can clean and transport the filtered impurities, preventing them from accumulating and clogging the filter sleeve at point 41, thus affecting filtration efficiency.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas separation device for physical solvent decarbonization, comprising a separation device body, characterized in that, The separation equipment body is installed from top to bottom as follows: a pre-separation tower (11), a main adsorption tower (12), a regeneration tower (13) and a base (10). The pre-separation tower (11) has an air inlet (16) for gas entry on one side. The regeneration tower (13) is filled with lean liquid for carbon dioxide absorption. The outer walls of the main adsorption tower (12) and the regeneration tower (13) are respectively equipped with a second support base (17) and a first support base (14) for bearing. The top of the first support base (14) is equipped with a flow guiding component for lean liquid reflux. The top of the second support base (17) is equipped with a filter box (30). The input end of the flow guiding component is connected to the regeneration tower (13) through a pipe, and the output end of the flow guiding component is connected to the filter box (30) through a pipe. The filter box (30) is equipped with a filter assembly for purifying lean liquid in the middle of its inner wall, and a cleaning assembly for cleaning the filter assembly is installed on the top of the inner wall of the filter box (30). An adjustment assembly for adjusting the pore size of the filter assembly is installed on one side of the inner wall of the filter box (30). A concentration detector for measuring the concentration of lean liquid is installed inside the flow guide assembly. A reflux pipe (32) connected to the main adsorption tower (12) is installed at one end of the filter box (30).

2. The gas separation device for physical solvent decarbonization according to claim 1, characterized in that, The flow guiding assembly includes a measuring device (15), a water pump (20), and a flow meter (21). The water pump (20) is installed on the top outer wall of the first support base (14). The flow meter (21) is installed at the output end of the water pump (20). The bottom end of the flow meter (21) is installed with an input pipe (22) that communicates with the regeneration tower (13). The output end of the water pump (20) is installed with an output pipe (23). The measuring device (15) is installed on the outer wall of the main adsorption tower (12). The measuring device (15) is connected to the flow meter (21) via an electrical signal.

3. The gas separation device for physical solvent decarbonization according to claim 2, characterized in that, The filter assembly includes a filter plate (40) and a filter sleeve (41). The filter plate (40) is installed in the middle of the inner wall of the filter box (30). A partition (31) is installed between the filter plate (40) and the filter box (30). The top of the filter plate (40) has multiple through holes arranged in a matrix. The filter sleeve (41) is installed on the inner wall of the through holes.

4. The gas separation device for physical solvent decarbonization according to claim 3, characterized in that, The output pipe (23) is connected to a first branch pipe (24) and a second branch pipe (25) at both ends. The second branch pipe (25) is connected to the bottom inner wall of the filter box (30), and the first branch pipe (24) is connected to the top of the filter plate (40).

5. A gas separation device for physical solvent decarbonization according to claim 3, characterized in that, The regulating assembly includes an air pump (50), a collection chamber (51), and an air transmission pipe (52). The air pump (50) is installed on one side of the top of the filter plate (40). The air pump (50) is electrically connected to the concentration detector. The collection chamber (51) is installed on the inner wall of the filter plate (40). The air pump (50) is connected to the collection chamber (51) through a pipe. The air transmission pipe (52) is arranged linearly and connected to one side of the collection chamber (51).

6. The gas separation device for physical solvent decarbonization according to claim 5, characterized in that, The adjustment assembly also includes an elastic collar (45), which is installed on the axis of the filter sleeve (41). The inner wall of the filter sleeve (41) is provided with an annular cavity (42). The air transmission pipe (52) is connected to the annular cavity (42) on two adjacent filter sleeves (41). The annular cavity (42) is provided with multiple guide cavities (43) arranged in a circle at both the upper and lower ends. A sliding rod (44) is slidably connected to the inner wall of the guide cavity (43). One end of the sliding rod (44) is in contact with the elastic collar (45).

7. A gas separation device for physical solvent decarbonization according to claim 3, characterized in that, The impurity removal assembly includes an electric push rod (71) and a scraper (70). One end of the electric push rod (71) is installed on the inner wall of the filter box (30), and the scraper (70) is installed on the telescopic end of the electric push rod (71) and slidably connected to the top of the filter plate (40).

8. A gas separation device for physical solvent decarbonization according to claim 7, characterized in that, The impurity removal assembly also includes a collection chamber (60) and an impurity discharge pipe (61). The collection chamber (60) is installed between the filter plate (40) and the filter box (30). One end of the impurity discharge pipe (61) is connected to the inner wall of the bottom of the collection chamber (60), and the other end of the impurity discharge pipe (61) is installed outside the filter box (30).

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