Built-in heat exchange structure of temperature swing adsorption carbon dioxide enrichment tower

Abstract

The utility model provides a built-in heat exchange structure of a temperature swing adsorption carbon dioxide enrichment tower. The built-in heat exchange structure comprises a built-in heat exchange ring pipe, and the conduction oil outlet special connecting pipe is arranged at the output end of the built-in heat exchange ring pipe. According to the built-in heat exchange structure of the temperature swing adsorption carbon dioxide enrichment tower provided by the utility model, the built-in heat exchange ring pipe is arranged in the enrichment tower, and then the heat conduction oil inlet special connecting pipe and the heat conduction oil outlet special connecting pipe are respectively connected with the built-in heat exchange ring pipe, so that the built-in heat exchange structure is directly contacted with an adsorbent; the heat exchange path is short, the heat resistance is small, and rapid and efficient heat transfer can be realized, so that the temperature of the adsorbent can be rapidly adjusted in the adsorption and desorption processes, and the adsorption and desorption speed and efficiency are improved; the built-in heat exchange structure is integrated in the enrichment tower, and extra external heat exchange equipment is not needed, so that the volume and the occupied area of the whole system are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of enrichment towers, in particular to a heat exchange structure in a temperature-variable adsorption carbon dioxide enrichment tower. Background Art

[0002] In today's society, massive carbon dioxide emissions pose a serious threat to the global climate and environment. With the continued advancement of industrialization and the continuous growth of energy consumption, carbon dioxide emissions continue to climb. As one of the main greenhouse gases, excessive carbon dioxide emissions have led to a series of environmental problems, including rising global temperatures, rising sea levels, and frequent extreme weather events. Therefore, reducing carbon dioxide emissions and effectively capturing and treating it have become urgent global challenges.

[0003] Temperature swing adsorption technology, as an important method for carbon dioxide capture, has been widely studied and applied in recent years. This technology utilizes the adsorption and desorption characteristics of carbon dioxide by adsorbents at different temperatures to achieve carbon dioxide enrichment and separation by changing the temperature. During the temperature swing adsorption process, temperature control plays a key role in the performance of the adsorbent and the carbon dioxide capture efficiency.

[0004] However, traditional enrichment towers usually use external heat exchange equipment to regulate the temperature inside the tower, which easily leads to low heat exchange efficiency and large equipment size.

[0005] Therefore, it is necessary to provide a heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower to solve the above technical problems. Utility Model Content

[0006] The utility model provides a heat exchange structure in a temperature-variable adsorption carbon dioxide enrichment tower, which solves the problems of low heat exchange efficiency and large equipment volume when using external heat exchange equipment to adjust the temperature in the tower.

[0007] In order to solve the above technical problems, the utility model provides a heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower, comprising:

[0008] Built-in heat exchange loop pipe;

[0009] A special pipe for the outlet of the heat transfer oil is provided at the output end of the internal heat exchange loop pipe;

[0010] A special pipe for the inlet of the heat transfer oil is provided at the input end of the internal heat exchange loop pipe;

[0011] An internal heat exchange ring pipe oil inlet valve assembly is provided at the input end of the special pipe for the heat transfer oil inlet.

[0012] Preferably, the internal heat exchange ring pipe includes an inlet flange pipe, a lower outer ring pipe, a lower inner ring pipe, a ring pipe connecting pipe, an outer ring heat exchange pipe, an inner ring heat exchange pipe, an upper inner ring pipe, an upper outer ring pipe and an outlet flange pipe, the lower outer ring pipe is fixedly installed on the output end of the inlet flange pipe, the lower inner ring pipe is arranged on the inner side surface of the lower outer ring pipe, the outer ring heat exchange pipe is fixedly installed on the top of the lower outer ring pipe, the upper outer ring pipe is fixedly installed on the top of the outer ring heat exchange pipe, the inner ring heat exchange pipe is fixedly installed on the top of the lower inner ring pipe, the upper inner ring pipe is fixedly installed on the top of the inner ring heat exchange pipe, the input end of the outlet flange pipe is fixedly installed on the output end of the upper outer ring pipe, and the ring pipe connecting pipe is respectively fixedly installed on the lower outer ring pipe and the lower inner ring pipe and in the middle of the upper outer ring pipe and the upper inner ring pipe.

[0013] Preferably, the special pipe for the heat transfer oil inlet and the special pipe for the heat transfer oil outlet both include a welding flange, a seamless steel pipe, a special manhole flange, a high-temperature resistant rubber ring, a special pressure plate flange, a fastening bolt, a spring washer and a threaded connection flange. The welding flange is fixedly installed on one end of the seamless steel pipe, and the threaded connection flange is fixedly installed on the other end of the seamless steel pipe. The special manhole flange is arranged on the outer side of the seamless steel pipe, and the special pressure plate flange and the high-temperature resistant rubber ring are both arranged on the outer side of the seamless steel pipe. The special pressure plate flange is arranged on the outer side of the high-temperature resistant rubber ring, and the spring washer is sleeved on the outer side of the fastening bolt. The fastening bolt is arranged inside the special pressure plate flange, and one end is threadedly connected to the inside of one side of the special manhole flange.

[0014] Preferably, the internal heat exchange ring pipe oil inlet valve assembly includes a flange tee, an oil inlet cut-off valve and an oil discharge cut-off valve, the oil inlet cut-off valve is fixedly installed at one end of the flange tee, and the oil discharge cut-off valve is fixedly installed at the bottom of the flange tee.

[0015] Preferably, the inlet flange pipe is connected to the welding flange of the special pipe for the thermal oil inlet, and the outlet flange pipe is connected to the welding flange of the special pipe for the thermal oil outlet.

[0016] Preferably, the other end of the flange tee pipe is connected to the threaded connection flange of the special connecting pipe for the heat transfer oil inlet.

[0017] Preferably, the high temperature resistant rubber ring includes a first rubber ring and a second rubber ring, the first rubber ring and the second rubber ring are both arranged on the outer side surface of the seamless steel pipe, and one side of the first rubber ring and the second rubber ring abut against each other.

[0018] Compared with related technologies, the heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower provided by the present invention has the following beneficial effects:

[0019] The utility model provides a heat exchange structure in a temperature-variable adsorption carbon dioxide enrichment tower. The structure comprises a heat exchange loop pipe arranged inside the enrichment tower, and a special pipe for a heat transfer oil inlet and a special pipe for a heat transfer oil outlet are respectively connected to the heat exchange loop pipe, so that the heat exchange structure is in direct contact with the adsorbent, the heat exchange path is short, the thermal resistance is small, and fast and efficient heat transfer can be achieved, which helps to quickly adjust the temperature of the adsorbent during the adsorption and desorption processes, thereby improving the rate and efficiency of adsorption and desorption; the heat exchange structure is integrated inside the enrichment tower, and no additional external heat exchange equipment is required, thereby reducing the volume and floor space of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a first embodiment of a heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower provided by the present invention;

[0021] Figure 2 for Figure 1 The schematic diagram of the vertical structure of the built-in heat exchange loop tube is shown;

[0022] Figure 3 for Figure 1 The schematic diagram of the lower structure of the built-in heat exchange loop pipe is shown;

[0023] Figure 4 for Figure 1 The schematic diagram of the upper structure of the built-in heat exchange loop tube is shown;

[0024] Figure 5 for Figure 1 The schematic diagram of the structure of the internal heat exchange ring pipe oil inlet valve assembly is shown;

[0025] Figure 6 for Figure 1 Schematic diagram of seamless steel pipe structure shown;

[0026] Figure 7 for Figure 6 The schematic diagram of the side structure of the special pressure plate flange is shown;

[0027] Figure 8 This is a structural schematic diagram of a second embodiment of a heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower provided by the present invention.

[0028] Numbers in the figure: 6c, built-in heat exchange ring pipe, 8c, built-in heat exchange ring pipe oil inlet valve assembly, 9c, special pipe for heat transfer oil inlet, 11c, special pipe for heat transfer oil outlet, 53c, steel pipe, 73c, inlet flange pipe, 74c, lower outer ring pipe, 75c, lower inner ring pipe, 76c, ring pipe connecting pipe, 77c, outer ring heat exchange pipe, 78c, inner ring heat exchange pipe, 79c, upper inner ring pipe, 80c, upper outer ring Pipe, 81c, outlet flange connecting pipe, 88c, flange tee pipe, 89c, oil inlet shut-off valve, 90c, oil discharge shut-off valve, 91c, welding flange, 92c, seamless steel pipe, 93c, special manhole flange, 94c, high-temperature resistant rubber ring, 95c, special pressure plate flange, 96c, fastening bolts, 97c, spring washer, 98c, threaded connection flange, 941c, first rubber ring, 942c, second rubber ring. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0030] First embodiment

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 ,in, Figure 1 This is a structural schematic diagram of a first embodiment of a heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the vertical structure of the built-in heat exchange loop tube is shown; Figure 3 for Figure 1 The schematic diagram of the lower structure of the built-in heat exchange loop pipe is shown; Figure 4 for Figure 1 The schematic diagram of the upper structure of the built-in heat exchange loop tube is shown; Figure 5 for Figure 1 The schematic diagram of the structure of the internal heat exchange ring pipe oil inlet valve assembly is shown; Figure 6 for Figure 1 Schematic diagram of seamless steel pipe structure shown; Figure 7 for Figure 6 A schematic diagram of the side structure of the special pressure plate flange is shown. A heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower includes: an internal heat exchange loop pipe 6c;

[0032] A special pipe 11c for the outlet of the heat transfer oil is provided at the output end of the internal heat exchange loop pipe 6c;

[0033] A special pipe 9c for the inlet of the heat transfer oil is provided at the input end of the internal heat exchange loop pipe 6c;

[0034] The internal heat exchange loop oil inlet valve assembly 8c is arranged at the input end of the special heat transfer oil inlet pipe 9c.

[0035] The internal heat exchange loop pipe 6c includes an inlet flange pipe 73c, a lower outer ring pipe 74c, a lower inner ring pipe 75c, a ring pipe connecting pipe 76c, an outer ring heat exchange pipe 77c, an inner ring heat exchange pipe 78c, an upper inner ring pipe 79c, an upper outer ring pipe 80c and an outlet flange pipe 81c. The lower outer ring pipe 74c is fixedly installed on the output end of the inlet flange pipe 73c, the lower inner ring pipe 75c is arranged on the inner side surface of the lower outer ring pipe 74c, the outer ring heat exchange pipe 77c is fixedly installed on the top of the lower outer ring pipe 74c, and the The upper outer ring tube 80c is fixedly installed on the top of the outer ring heat exchange tube 77c, the inner ring heat exchange tube 78c is fixedly installed on the top of the lower inner ring tube 75c, the upper inner ring tube 79c is fixedly installed on the top of the inner ring heat exchange tube 78c, the input end of the outlet flange pipe 81c is fixedly installed on the output end of the upper outer ring tube 80c, and the ring tube connecting tube 76c is respectively fixedly installed in the middle of the lower outer ring tube 74c and the lower inner ring tube 75c and the upper outer ring tube 80c and the upper inner ring tube 79c.

[0036] The special pipe 9c for the heat transfer oil inlet and the special pipe 11c for the heat transfer oil outlet both include a welding flange 91c, a seamless steel pipe 92c, a special manhole flange 93c, a high-temperature resistant rubber ring 94c, a special pressure plate flange 95c, a fastening bolt 96c, a spring washer 97c and a threaded connection flange 98c. The welding flange 91c is fixedly installed on one end of the seamless steel pipe 92c, and the threaded connection flange 98c is fixedly installed on the other end of the seamless steel pipe 92c. 93c is arranged on the outer side surface of the seamless steel pipe 92c, the special pressure plate flange 95c and the high-temperature resistant rubber ring 94c are both arranged on the outer side surface of the seamless steel pipe 92c, the special pressure plate flange 95c is arranged on the outer side surface of the high-temperature resistant rubber ring 94c, the spring washer 97c is sleeved on the outer side surface of the fastening bolt 96c, the fastening bolt 96c is arranged inside the special pressure plate flange 95c, and one end is threadedly connected to the inside of one side of the special manhole flange 93c.

[0037] The internal heat exchange loop oil inlet valve assembly 8c includes a flange tee pipe 88c, an oil inlet shut-off valve 89c and an oil discharge shut-off valve 90c. The oil inlet shut-off valve 89c is fixedly installed at one end of the flange tee pipe 88c, and the oil discharge shut-off valve 90c is fixedly installed at the bottom of the flange tee pipe 88c.

[0038] The inlet flange pipe 73c is connected to the welding flange 91c of the thermal oil inlet special pipe 9c, and the outlet flange pipe 81c is connected to the welding flange 91c of the thermal oil outlet special pipe 11c.

[0039] The other end of the flange tee pipe 88c is connected to the threaded connection flange 98c of the special heat transfer oil inlet pipe 9c.

[0040] The oil inlet valve assembly 8c is provided with three interfaces. One horizontal end is connected to the special pipe 9c for the thermal oil inlet, the oil inlet shut-off valve 89c at one end is connected to the oil supply pipeline, and the oil discharge shut-off valve 90c at the vertical lower end is connected to the oil return pipeline.

[0041] The oil inlet shut-off valve 89c is interlocked with the oil discharge shut-off valve 90c. When the temperature swing adsorption tower is heated for desorption, the oil inlet shut-off valve 89c is opened and the oil discharge shut-off valve 90c is closed.

[0042] When the temperature swing adsorption tower completes desorption and the tower is cooled, the oil inlet shut-off valve 89c is closed and the oil discharge shut-off valve 90c is opened;

[0043] The special manhole flange 93c matches the special pressure plate flange 95c according to the diameter of the thermal oil inlet and outlet pipes, and the holes are drilled;

[0044] The special manhole flange 93c and the special pressure plate flange 95c can slide freely on the seamless steel pipe 92c, leaving operating space to complete the connection between the special pipe 9c for the heat transfer oil inlet and the internal heat exchange loop pipe 6c;

[0045] A high-temperature resistant rubber ring 94c is provided between the special manhole flange 93c and the special pressure plate flange 95c. When the special pressure plate flange 95c is tightened by the fastening bolts 95c, the high-temperature resistant rubber ring 94c is deformed, thereby achieving reliable sealing.

[0046] The working principle of the heat exchange structure in the temperature-swing adsorption carbon dioxide enrichment tower provided by the utility model is as follows:

[0047] The built-in heat exchange loop pipe 6c is connected to the special pipe 9c for the heat transfer oil inlet and the special pipe 11c for the heat transfer oil outlet. When in use, the heat transfer oil is input into the interior of the built-in heat exchange loop pipe 6c through the special pipe 9c for the heat transfer oil inlet, and then discharged through the special pipe 11c for the heat transfer oil outlet. The main function of the built-in heat exchange loop pipe 6c is to accelerate the temperature rise in the adsorption tower and quickly desorb the adsorbed carbon dioxide; when the desorption is completed, the heat transfer oil in the built-in heat exchange loop pipe 6c needs to be drained.

[0048] Compared with related technologies, the heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower provided by the present invention has the following beneficial effects:

[0049] By arranging the built-in heat exchange loop pipe 6c inside the enrichment tower, and then connecting the special heat transfer oil inlet pipe 9c and the special heat transfer oil outlet pipe 11c to the built-in heat exchange loop pipe 6c respectively, the built-in heat exchange structure is directly in contact with the adsorbent, the heat exchange path is short, the thermal resistance is small, and fast and efficient heat transfer can be achieved, which helps to quickly adjust the temperature of the adsorbent during the adsorption and desorption process, and improve the rate and efficiency of adsorption and desorption; the built-in heat exchange structure is integrated inside the enrichment tower, and no additional external heat exchange equipment is required, thereby reducing the volume and floor space of the entire system.

[0050] Second embodiment

[0051] Please refer to Figure 8 Based on the heat exchange structure within a temperature-swing adsorption carbon dioxide enrichment tower provided in the first embodiment of this application, the second embodiment of this application proposes another heat exchange structure within a temperature-swing adsorption carbon dioxide enrichment tower. The second embodiment is merely a preferred embodiment of the first embodiment, and implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0052] Specifically, the difference of the heat exchange structure in a temperature-variable adsorption carbon dioxide enrichment tower provided in the second embodiment of the present application is that, in a heat exchange structure in a temperature-variable adsorption carbon dioxide enrichment tower, the high-temperature resistant rubber ring 94c includes a first rubber ring 941c and a second rubber ring 942c, and the first rubber ring 941c and the second rubber ring 942c are both arranged on the outer side surface of the seamless steel pipe 92c, and one side of the first rubber ring 941c and the second rubber ring 942c abut each other.

[0053] The working principle of the heat exchange structure in the temperature-swing adsorption carbon dioxide enrichment tower provided by the utility model is as follows:

[0054] When the high-temperature resistant rubber ring 94c needs to be replaced after long-term use, the user can rotate the fastening bolt 96c to move one end of the fastening bolt 96c out from the inside of the special manhole flange 93c, and then make the special pressure plate flange 95c aligned with the special manhole flange 93c, and then separate the openings of the first rubber ring 941c and the second rubber ring 942c, thereby disassembling and replacing the first rubber ring 941c and the second rubber ring 942c, and then put the new first rubber ring 941c and the second rubber ring 942c on the outer side of the seamless steel pipe 92c, and stagger the openings of the first rubber ring 941c and the second rubber ring 942c.

[0055] Compared with related technologies, the heat exchange structure in a temperature-swing adsorption carbon dioxide enrichment tower provided by the present invention has the following beneficial effects:

[0056] By providing the first rubber ring 941c and the second rubber ring 942c, it is convenient for the user to disassemble and replace the first rubber ring 941c and the second rubber ring 942c after long-term use.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower, characterized in that: include: Built-in heat exchange loop pipe; A special pipe for the outlet of the heat transfer oil is provided at the output end of the internal heat exchange loop pipe; A special pipe for the inlet of the heat transfer oil is provided at the input end of the internal heat exchange loop pipe; An internal heat exchange ring pipe oil inlet valve assembly is provided at the input end of the special pipe for the heat transfer oil inlet.

2. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 1, characterized in that: The internal heat exchange ring pipe includes an inlet flange pipe, a lower outer ring pipe, a lower inner ring pipe, a ring pipe connecting pipe, an outer ring heat exchange pipe, an inner ring heat exchange pipe, an upper inner ring pipe, an upper outer ring pipe and an outlet flange pipe. The lower outer ring pipe is fixedly installed on the output end of the inlet flange pipe, the lower inner ring pipe is arranged on the inner side surface of the lower outer ring pipe, the outer ring heat exchange pipe is fixedly installed on the top of the lower outer ring pipe, the upper outer ring pipe is fixedly installed on the top of the outer ring heat exchange pipe, the inner ring heat exchange pipe is fixedly installed on the top of the lower inner ring pipe, the upper inner ring pipe is fixedly installed on the top of the inner ring heat exchange pipe, the input end of the outlet flange pipe is fixedly installed on the output end of the upper outer ring pipe, and the ring pipe connecting pipe is respectively fixedly installed on the lower outer ring pipe and the lower inner ring pipe and in the middle of the upper outer ring pipe and the upper inner ring pipe.

3. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 1, characterized in that: The special pipe for the heat transfer oil inlet and the special pipe for the heat transfer oil outlet both include a welding flange, a seamless steel pipe, a special manhole flange, a high-temperature resistant rubber ring, a special pressure plate flange, a fastening bolt, a spring washer and a threaded connection flange. The welding flange is fixedly installed on one end of the seamless steel pipe, and the threaded connection flange is fixedly installed on the other end of the seamless steel pipe. The special manhole flange is arranged on the outer side of the seamless steel pipe, and the special pressure plate flange and the high-temperature resistant rubber ring are both arranged on the outer side of the seamless steel pipe. The special pressure plate flange is arranged on the outer side of the high-temperature resistant rubber ring, and the spring washer is sleeved on the outer side of the fastening bolt. The fastening bolt is arranged inside the special pressure plate flange, and one end is threadedly connected to the inside of one side of the special manhole flange.

4. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 1, characterized in that: The internal heat exchange ring pipe oil inlet valve assembly includes a flange tee, an oil inlet cut-off valve and an oil discharge cut-off valve. The oil inlet cut-off valve is fixedly installed at one end of the flange tee, and the oil discharge cut-off valve is fixedly installed at the bottom of the flange tee.

5. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 2, characterized in that: The inlet flange pipe is connected to the welding flange of the special pipe for the thermal oil inlet, and the outlet flange pipe is connected to the welding flange of the special pipe for the thermal oil outlet.

6. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 4, characterized in that: The other end of the flange tee pipe is connected to the threaded connection flange of the special pipe for the heat transfer oil inlet.

7. The heat exchange structure in a temperature swing adsorption carbon dioxide enrichment tower according to claim 3, characterized in that: The high temperature resistant rubber ring includes a first rubber ring and a second rubber ring. The first rubber ring and the second rubber ring are both arranged on the outer side of the seamless steel pipe, and one side of the first rubber ring and the second rubber ring abut against each other.

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