Exhaust structure of temperature swing adsorption carbon dioxide enrichment tower

Abstract

The utility model provides an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower. The air outlet diffusion port is formed in the inner side of the upper sealing head; and the outlet regulating valve is arranged at the top of the upper sealing head. According to the exhaust structure of the temperature swing adsorption carbon dioxide enrichment tower provided by the utility model, the outlet regulating valve is linked with the pressure sensor, so that the pressure in the adsorption tower can be accurately controlled, and the pressure in the tower can be always kept in an ideal range no matter in an adsorption process or a desorption process; stable conditions are created for efficient adsorption and desorption of the carbon dioxide, the capture efficiency of the carbon dioxide can be greatly improved through accurate pressure control, and the situation that the adsorption and desorption effects are unstable due to pressure fluctuation is reduced; and the stable pressure is beneficial to optimizing the adsorption performance and desorption efficiency of the adsorbent on carbon dioxide.

Description

Technical Field

[0001] The utility model relates to the technical field of enrichment towers, in particular to an exhaust structure for a temperature swing adsorption carbon dioxide enrichment tower. Background Technique

[0002] With the increasingly serious global climate change problem, reducing carbon dioxide emissions has become an urgent task. A large amount of carbon dioxide generated in industrial production, energy utilization and other processes requires effective treatment methods.

[0003] The temperature swing adsorption carbon dioxide enrichment tower is one of the key devices for carbon dioxide capture. During the temperature swing adsorption process, the pressure control in the adsorption tower is crucial for the adsorption and desorption efficiency of carbon dioxide. A reasonable exhaust structure can effectively regulate the pressure in the adsorption tower and improve the carbon dioxide capture rate.

[0004] The traditional exhaust structure of the temperature swing adsorption carbon dioxide enrichment tower is usually relatively simple and difficult to achieve precise pressure control. When the pressure in the adsorption tower fluctuates greatly, it may affect the adsorption and desorption effects of carbon dioxide and reduce the capture efficiency. In addition, the traditional exhaust structure may not be able to respond to the pressure changes in the adsorption tower in time, resulting in unstable system operation.

[0005] Therefore, it is necessary to provide an exhaust structure for a temperature swing adsorption carbon dioxide enrichment tower to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides an exhaust structure for a temperature swing adsorption carbon dioxide enrichment tower, which solves the problems of simple exhaust structure, difficult precise pressure control, pressure fluctuation affecting adsorption and desorption effects and capture efficiency, and inability to respond to pressure changes in time resulting in unstable system operation.

[0007] To solve the above technical problems, an exhaust structure for a temperature swing adsorption carbon dioxide enrichment tower provided by the utility model includes:

[0008] Upper head;

[0009] Outlet diffuser port, the outlet diffuser port is arranged inside the upper head;

[0010] Outlet regulating valve, the outlet regulating valve is arranged on the top of the upper head;

[0011] L-shaped three-way ball valve, the L-shaped three-way ball valve is arranged on the top of the outlet regulating valve;

[0012] Exhaust gas discharge valve assembly, the exhaust gas discharge valve assembly is arranged at the output end of the L-shaped three-way ball valve;

[0013] Pressure sensor, the pressure sensor is arranged on the top of the upper head;

[0014] In-situ pressure gauge, and the in-situ pressure gauge is arranged on the top of the upper head.

[0015] Preferably, the gas outlet diffuser includes a flange, a bolt connection pair, a stainless steel graphite wound gasket, a 5-mesh stainless steel filter screen, a 35-mesh stainless steel filter screen, and a 75-mesh stainless steel filter screen. The 35-mesh stainless steel filter screen is arranged on one side of the 5-mesh stainless steel filter screen, the 75-mesh stainless steel filter screen is arranged on one side of the 35-mesh stainless steel filter screen, the flange is arranged on one side of the 75-mesh stainless steel filter screen, the bolt connection pair is arranged inside the flange, and the stainless steel graphite wound gasket is arranged on the outer side surface of the bolt connection pair.

[0016] Preferably, a third nozzle seat is fixedly installed at the top of the inner side surface of the upper head. The third nozzle seat includes a third steel pipe and a third standard flange. The third standard flange is fixedly connected to the bottom of the third steel pipe, the top of the third steel pipe is fixedly installed at the top of the inner side surface of the upper head, and the top of the bolt connection pair is threadedly connected to the bottom of the third standard flange.

[0017] Preferably, a first nozzle seat and a second nozzle seat are respectively fixedly installed at the top of the upper head. The first nozzle seat includes a first steel pipe and a first standard flange, and the second nozzle seat includes a second steel pipe and a second standard flange.

[0018] Preferably, the bottoms of the first steel pipe and the second steel pipe are both fixedly connected to the top of the upper head. The first standard flange is fixedly installed at the top of the first steel pipe, the second standard flange is fixedly installed at the top of the second steel pipe, the bottom of the pressure sensor is fixedly installed at the top of the second standard flange, and the bottom of the outlet regulating valve is fixedly installed at the top of the first standard flange.

[0019] Preferably, the exhaust gas discharge assembly includes a discharge pipe extension section, a flue gas inlet section, a CO2 content detection section, a CO2 content analyzer, and a flue gas outlet section. The discharge pipe extension section is fixedly installed at the output end of the L-shaped three-way ball valve, the flue gas inlet section is fixedly installed on the discharge pipe extension section, the CO2 content detection section is fixedly installed at the output end of the flue gas inlet section, the CO2 content analyzer is respectively fixedly installed on both sides of the CO2 content detection section, and the flue gas outlet section is fixedly installed at the output end of the CO2 content detection section.

[0020] Preferably, fixing rings are fixedly installed on both sides of the CO2 content detection section. An installation ring is threadedly connected to the outer side surface of the fixing ring. A mesh cover is fixedly installed on one side of the installation ring 1081, and the mesh cover is arranged on the outer side surface of the CO2 content analyzer.

[0021] Compared with the related technologies, the exhaust structure of a variable-temperature adsorption carbon dioxide enrichment tower provided by the present utility model has the following beneficial effects:

[0022] The present utility model provides an exhaust structure of a variable-temperature adsorption carbon dioxide enrichment tower. By interlocking the outlet regulating valve with the pressure sensor, the pressure inside the adsorption tower can be precisely controlled. Whether in the adsorption or desorption process, the pressure inside the tower can be ensured to always remain within the ideal range, creating stable conditions for the efficient adsorption and desorption of carbon dioxide. This precise pressure control can greatly improve the carbon dioxide capture efficiency and reduce the unstable adsorption and desorption effects caused by pressure fluctuations; the stable pressure helps to optimize the adsorption performance of the adsorbent for carbon dioxide and the desorption efficiency; it helps to avoid the unstable operation of the system caused by sudden pressure changes, reduce the occurrence probability of equipment failures, extend the service life of the equipment, and ensure the long-term and stable operation of the entire variable-temperature adsorption carbon dioxide enrichment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the first embodiment of an exhaust structure of a variable-temperature adsorption carbon dioxide enrichment tower provided by the present utility model;

[0024] Figure 2 is Figure 1 the schematic structural diagram of the upper head shown;

[0025] Figure 3 is Figure 2 the schematic structural diagram of the first nozzle support and the third nozzle support shown;

[0026] Figure 4 is Figure 2 the schematic structural diagram of the second nozzle support shown;

[0027] Figure 5 is Figure 1 the schematic structural diagram of the gas outlet diffuser shown;

[0028] Figure 6 is Figure 1 the schematic structural diagram of the spent gas discharge valve assembly shown;

[0029] Figure 7 It is a schematic structural diagram of the second embodiment of an exhaust structure of a variable-temperature adsorption carbon dioxide enrichment tower provided by the present utility model.

[0030] Reference numerals in the figure: 2b, upper head; 7b, gas outlet diffuser; 82b, flange; 83b, bolt connection pair; 84b, stainless steel graphite wound gasket; 85b, five-mesh stainless steel filter screen; 86b, thirty-five-mesh stainless steel filter screen; 87b, seventy-five-mesh stainless steel filter screen; 16b, outlet regulating valve; 17b, pressure sensor; 18b, local pressure gauge; 19b, L-shaped three-way ball valve; 20b, exhaust gas discharge valve assembly; 105b, extension section of the discharge pipe; 106b, flue gas inlet section; 107b, CO2 content detection section; 108b, CO2 content analyzer; 109b, flue gas outlet section; 49b, first nozzle; 55b, first steel pipe; 56b, first standard flange; 50b, second nozzle; 57b, second steel pipe; 58b, second standard flange; 52b, third nozzle; 59b, third steel pipe; 60b, third standard flange; 1081b, mounting ring; 1082b, mesh cover; 1083b, fixing ring. Detailed implementation manners

[0031] The present utility model will be further described below in conjunction with the accompanying drawings and implementation manners.

[0032] First embodiment

[0033] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , wherein, Figure 1 FIG. Figure 2 is Figure 1 a schematic structural view of the upper head structure shown in Figure 3 is Figure 2 a schematic structural view of the first nozzle and the third nozzle shown in Figure 4 is Figure 2 a schematic structural view of the second nozzle shown in Figure 5 is Figure 1 a schematic structural view of the gas outlet diffuser shown in Figure 6 is Figure 1 a schematic structural view of the exhaust gas discharge valve assembly shown in. A variable temperature adsorption carbon dioxide enrichment tower exhaust structure includes:

[0034] Upper head 2b;

[0035] Gas outlet diffuser 7b, which is arranged inside the upper head 2b;

[0036] Outlet regulating valve 16b, which is arranged on the top of the upper head 2b;

[0037] L-shaped three-way ball valve 19b, and the L-shaped three-way ball valve 19b is arranged at the top of the outlet regulating valve 16b;

[0038] Exhaust gas discharge valve assembly 20b, and the exhaust gas discharge valve assembly 20b is arranged at the output end of the L-shaped three-way ball valve 19b;

[0039] Pressure sensor 17b, and the pressure sensor 17b is arranged at the top of the upper head 2b;

[0040] Local pressure gauge 18b, and the local pressure gauge 18b is arranged at the top of the upper head 2b.

[0041] The gas outlet diffuser port 7b includes a flange 82b, a bolt connection pair 83b, a stainless steel graphite wound gasket 84b, a 5-mesh stainless steel filter screen 85b, a 35-mesh stainless steel filter screen 86b, and a 75-mesh stainless steel filter screen 87b. The 35-mesh stainless steel filter screen 86b is arranged on one side of the 5-mesh stainless steel filter screen 85b, the 75-mesh stainless steel filter screen 87b is arranged on one side of the 35-mesh stainless steel filter screen 86b, the flange 82b is arranged on one side of the 75-mesh stainless steel filter screen 87b, the bolt connection pair 83b is arranged inside the flange 82b, and the stainless steel graphite wound gasket 84b is arranged on the outer side of the bolt connection pair 83b.

[0042] A third nozzle seat 52b is fixedly installed at the top of the inner side of the upper head 2b. The third nozzle seat 52b includes a third steel pipe 59b and a third standard flange 60b. The third standard flange 60b is fixedly connected to the bottom of the third steel pipe 59b. The top of the third steel pipe 59b is fixedly installed at the top of the inner side of the upper head 2b. The top of the bolt connection pair 83b is threadedly connected to the bottom of the third standard flange 60b.

[0043] A first nozzle seat 49b and a second nozzle seat 50b are respectively fixedly installed at the top of the upper head 49b. The first nozzle seat 49b includes a first steel pipe 55b and a first standard flange 56b. The second nozzle seat 50b includes a second steel pipe 57b and a second standard flange 58b.

[0044] The bottoms of the first steel pipe 55b and the second steel pipe 57b are both fixedly connected to the top of the upper head 2b. The first standard flange 56b is fixedly installed at the top of the first steel pipe 55b. The second standard flange 58b is fixedly installed at the top of the second steel pipe 57b. The bottom of the pressure sensor 17b is fixedly installed at the top of the second standard flange 58b. The bottom of the outlet regulating valve 16b is fixedly installed at the top of the first standard flange 56b.

[0045] The lean gas discharge assembly 20b includes a discharge pipe extension section 105b, a flue gas inlet section 106b, a CO2 content detection section 107b, a CO2 content analyzer 108b, and a flue gas outlet section 109b. The discharge pipe extension section 105b is fixedly installed at the output end of the L-shaped three-way ball valve 19b. The flue gas inlet section 106b is fixedly installed on the discharge pipe extension section 105b. The CO2 content detection section 107b is fixedly installed at the output end of the flue gas inlet section 106b. The CO2 content analyzer 108b is fixedly installed on both sides of the CO2 content detection section 107b respectively. The flue gas outlet section 109b is fixedly installed at the output end of the CO2 content detection section 107b.

[0046] The local pressure gauge 18b is arranged at the top of the adsorption tower and compared with the reading of the pressure sensor 17b. The local pressure gauge 18b is set for flange connection and connected to the nozzle seat.

[0047] The L-shaped three-way ball valve 19b is arranged above the outlet regulating valve 16b. The normally open side is connected to the outlet regulating valve 16b. The horizontal discharge side is connected to the lean gas discharge valve assembly 20b. The horizontal recovery side is connected to the CO2 recovery pipeline. The L-shaped three-way ball valve 19b is interlocked with the CO2 content analyzer 108b of the lean gas discharge valve assembly 20b. When the carbon dioxide concentration of the discharged flue gas reaches 25% of the inlet concentration, the L-shaped three-way ball valve 19b switches from the discharge side to the recovery side.

[0048] The lean gas discharge valve assembly 20b is arranged on the discharge side of the L-shaped three-way ball valve 19b. The CO2 content analyzer 108b is interlocked with the L-shaped three-way ball valve 19b.

[0049] The working principle of the exhaust structure of the temperature swing adsorption carbon dioxide enrichment tower provided by the present utility model is as follows:

[0050] The outlet regulating valve 16b is arranged at the top of the adsorption tower and interlocked with the pressure sensor 17b, and is used to adjust and control the working pressure in the adsorption tower. When the pressure in the adsorption tower reaches the designed working pressure, the outlet regulating valve 16b opens. When the pressure in the adsorption tower is less than 5% of the designed working pressure, the outlet regulating valve 16b closes by 5%. When the adsorption tower is at the designed negative pressure value, the outlet regulating valve 16b closes.

[0051] The designed measuring range of the pressure sensor 17b is -75 kPa to 0.6 MPa. It is arranged at the top of the adsorption tower and interlocked with the outlet regulating valve 16b to adjust and control the working pressure in the adsorption tower.

[0052] Compared with the related technology, the exhaust structure of the temperature swing adsorption carbon dioxide enrichment tower provided by the present utility model has the following beneficial effects:

[0053] Interlocked with the outlet regulating valve 16b and the pressure sensor 17b, it is possible to precisely control the pressure inside the adsorption tower. Whether in the adsorption or desorption process, it can ensure that the pressure inside the tower always remains within the ideal range, creating stable conditions for the efficient adsorption and desorption of carbon dioxide. This precise pressure control can greatly improve the carbon dioxide capture efficiency and reduce the instability of the adsorption and desorption effects caused by pressure fluctuations; the stable pressure helps to optimize the adsorption performance and desorption efficiency of the adsorbent for carbon dioxide; it helps to avoid the instability of the system operation caused by sudden pressure changes, reduce the occurrence probability of equipment failures, extend the service life of the equipment, and ensure that the entire temperature swing adsorption carbon dioxide enrichment system can operate stably for a long time.

[0054] Second Embodiment

[0055] Please refer to Figure 7 , based on an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower provided by the first embodiment of the present application, the second embodiment of the present application proposes another exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower. The second embodiment is merely a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0056] Specifically, the difference of an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower provided by the second embodiment of the present application is that in an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower, fixing rings 1083b are fixedly installed on both sides of the CO2 content detection section 107b. The outer side surface of the fixing ring 1083b is threadedly connected with a mounting ring 1081b. One side of the mounting ring 1081b is fixedly installed with a mesh cover 1082b, and the mesh cover 1082b is arranged on the outer side surface of the CO2 content analyzer 108b.

[0057] The working principle of an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower provided by the present utility model is as follows:

[0058] When in use, the user covers the mesh cover 1082b on the outer side surface of the CO2 content analyzer 108b, and threadedly connects the fixing ring 1083b and the mounting ring 1081b, thereby limiting the mesh cover 1082b on the outer side surface of the CO2 content analyzer 108b.

[0059] Compared with the related art, an exhaust structure of a temperature swing adsorption carbon dioxide enrichment tower provided by the present utility model has the following beneficial effects:

[0060] Through the cooperation of structures such as the mounting ring 1081b, the mesh cover 1082b, and the fixing ring 1083b, when in use, the mounting ring 1081b and the fixing ring 1083b are threadedly connected, and then the mesh cover 1082b is limited to the outer side of the CO2 content analyzer 108b, so as to play a role in protecting the CO2 content analyzer 108b.

[0061] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A variable-temperature adsorption carbon dioxide enrichment tower exhaust structure, characterized in that, Comprising: Upper head; Outlet diffuser port, which is arranged inside the upper head; Outlet regulating valve, which is arranged on the top of the upper head; L-shaped three-way ball valve, which is arranged on the top of the outlet regulating valve; Exhaust gas discharge valve assembly, which is arranged at the output end of the L-shaped three-way ball valve; Pressure sensor, which is arranged on the top of the upper head; Local pressure gauge, which is arranged on the top of the upper head.

2. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 1, characterized in that The outlet diffuser port includes a flange, a bolt connection pair, a stainless steel graphite wound gasket, a 5-mesh stainless steel filter screen, a 35-mesh stainless steel filter screen and a 75-mesh stainless steel filter screen. The 35-mesh stainless steel filter screen is arranged on one side of the 5-mesh stainless steel filter screen, the 75-mesh stainless steel filter screen is arranged on one side of the 35-mesh stainless steel filter screen, the flange is arranged on one side of the 75-mesh stainless steel filter screen, the bolt connection pair is arranged inside the flange, and the stainless steel graphite wound gasket is arranged on the outer side of the bolt connection pair.

3. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 2, characterized in that, A third nozzle seat is fixedly installed on the top of the inner side of the upper head. The third nozzle seat includes a third steel pipe and a third standard flange. The third standard flange is fixedly connected to the bottom of the third steel pipe, the top of the third steel pipe is fixedly installed on the top of the inner side of the upper head, and the top of the bolt connection pair is threadedly connected to the bottom of the third standard flange.

4. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 3, wherein, A first nozzle seat and a second nozzle seat are respectively fixedly installed on the top of the upper head. The first nozzle seat includes a first steel pipe and a first standard flange, and the second nozzle seat includes a second steel pipe and a second standard flange.

5. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 4, characterized in that, The bottoms of the first steel pipe and the second steel pipe are both fixedly connected to the top of the upper head. The first standard flange is fixedly installed on the top of the first steel pipe, the second standard flange is fixedly installed on the top of the second steel pipe, the bottom of the pressure sensor is fixedly installed on the top of the second standard flange, and the bottom of the outlet regulating valve is fixedly installed on the top of the first standard flange.

6. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 5, characterized in that The exhaust gas discharge valve assembly includes an exhaust pipe extension section, a flue gas inlet section, a CO2 content detection section, a CO2 content analyzer and a flue gas outlet section. The exhaust pipe extension section is fixedly installed at the output end of the L-shaped three-way ball valve, the flue gas inlet section is fixedly installed on the exhaust pipe extension section, the CO2 content detection section is fixedly installed at the output end of the flue gas inlet section, the CO2 content analyzer is respectively fixedly installed on both sides of the CO2 content detection section, and the flue gas outlet section is fixedly installed at the output end of the CO2 content detection section.

7. The exhaust structure of a temperature-variable adsorption carbon dioxide enrichment tower according to claim 6, characterized in that Fixing rings are fixedly installed on both sides of the CO2 content detection section. The outer side of the fixing ring is threadedly connected with a mounting ring, and a mesh cover is fixedly installed on one side of the mounting ring. The mesh cover is arranged on the outer side of the CO2 content analyzer.

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