Integrated tower adsorption / desorption treatment system

Abstract

The utility model relates to a kind of integrated tower type adsorption desorption treatment systems, it includes: tower body, its inside is sequentially separated into first adsorption function section, condensing recovery function section and condensate post-treatment function section from top to bottom;The outside of the first adsorption function section is provided with air inlet pipeline and chimney, and first steam cloth gas device and first adsorbent are installed in its inside;Condensing coil is installed in the inside of the condensing recovery function section, and the first adsorption function section is connected to the condensing recovery function section by analysis pipeline;The inside of the condensate post-treatment function section is separated into solvent tank and layered tank, the upper end of the solvent tank and the layered tank is communicated, and the condensing recovery function section is connected to the layered tank by condensate inlet flange short pipe.It is arranged by stacking from top to bottom by adsorption function section, condensing recovery function section and condensate post-treatment function section, significantly reduce the system floor space, reduce pipeline and steel consumption, save equipment manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to an integrated tower adsorption-desorption treatment system. Background Technology

[0002] Currently, volatile organic compounds (VOCs) not only cause serious environmental pollution but also pose potential hazards to human health. VOCs can react with other pollutants in the atmosphere, such as nitrogen oxides and sulfur dioxide, to form secondary pollutants. They are also major precursors to PM2.5 and O3 secondary pollutants. my country's VOC emissions are currently at a high level, making VOC control a top priority in current environmental governance. Adsorption-desorption technology, characterized by high treatment efficiency and a wide range of applicable waste gases, especially halogen-containing waste gases, is an important technical route for VOC control. Adsorption-desorption technology has played a crucial role in the treatment of organic waste gases in industries such as petrochemicals, packaging and printing, automobile manufacturing, building decoration, and machinery manufacturing.

[0003] In related technologies, adsorption-desorption systems employ a decentralized layout, with each adsorber being an independent tank. A significant amount of space is required between the adsorbers for insulation and enclosure, and they are arranged planarly. Furthermore, since the condensate flows by gravity after desorption, each adsorber needs to be elevated on a separate steel platform. The shell-and-tube heat exchanger, spiral plate heat exchanger, stratification tank, solvent tank, and wastewater tank are typically placed to the side or below the adsorber's steel platform. This conventional decentralized layout results in a very large overall system footprint and a substantial amount of piping connecting the individual units. Moreover, due to limitations imposed by the precision of the project's foundation site, the individual units cannot be pre-assembled in the factory, requiring extensive on-site welding, leading to a high overall cost. Utility Model Content

[0004] Based on the above description, this utility model provides an integrated tower adsorption-desorption treatment system to solve the problems of large land occupation and high overall cost of decentralized layout in related technologies.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An integrated tower adsorption-desorption treatment system, comprising: a tower body, the interior of which is divided into a first adsorption functional section, a condensation recovery functional section and a condensate post-treatment functional section from top to bottom; the first adsorption functional section is provided with an air inlet pipe and a chimney on the outside, and a first steam distribution device and a first adsorbent are installed inside; the condensation recovery functional section is provided with a condensation coil inside, and the first adsorption functional section is connected to the condensation recovery functional section through a desorption pipe; the condensate post-treatment functional section is divided into a solvent tank and a stratification tank inside, the upper ends of the solvent tank and the stratification tank are connected, and the condensation recovery functional section is connected to the stratification tank through a condensate inlet flange short pipe.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, a second adsorption section is provided between the first adsorption section and the condensation recovery section. The first adsorption section is connected to the second adsorption section through a pipe. The second adsorption section is connected to the air inlet pipe and the chimney, and a second steam distribution device and a second adsorbent are installed inside it.

[0008] Furthermore, a first analytical steam valve is installed at the air inlet of the first steam distribution device, and a second analytical steam valve is installed at the air inlet of the second steam distribution device.

[0009] Furthermore, the first steam distribution device is positioned above the first adsorbent, and the second steam distribution device is positioned above the second adsorbent.

[0010] Furthermore, a first grid is welded within the first adsorption functional section, and the first adsorbent is laid on the first grid; a second grid is welded within the second adsorption functional section, and the second adsorbent is laid on the second grid.

[0011] Furthermore, a first adsorption intake valve is installed at one end of the air intake pipe near the first adsorption functional section, and a second adsorption intake valve is installed at one end of the air intake pipe near the second adsorption functional section.

[0012] Furthermore, a first adsorption outlet valve is installed at the end of the chimney near the first adsorption functional section, and a second adsorption outlet valve is installed at the end of the chimney near the second adsorption functional section.

[0013] Furthermore, a first desorption valve is installed at the end of the desorption pipeline near the first adsorption functional section, and a second desorption valve is installed at the end of the desorption pipeline near the second adsorption functional section.

[0014] Furthermore, the condensation recovery functional section is externally provided with a non-condensable gas discharge flange short pipe and a desorption gas inlet flange short pipe, and the desorption gas inlet flange short pipe is connected to the desorption pipeline.

[0015] Furthermore, the solvent tank is provided with a solvent outlet flange short pipe on the outside, and the stratification tank is provided with a wastewater outlet flange short pipe on the outside.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] By stacking the adsorption, condensation recovery, and condensate post-treatment sections from top to bottom, the various functional sections within the tower are integrated into a single unit, significantly reducing the system's footprint. Integrating the piping and valve assembly into the tower body reduces the amount of piping and steel used, saving on equipment manufacturing costs. The piping and valves of each functional section within the tower can be prefabricated and connected in the factory, improving the convenience of prefabrication and construction. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the integrated tower adsorption-desorption treatment system provided in this embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the functional section partitioning structure of the integrated tower adsorption-desorption treatment system provided in this embodiment of the utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Tower body; 101. First adsorption section; 102. Condensation recovery section; 103. Condensate post-treatment section; 104. Second adsorption section; 2. First adsorbent; 3. First grid; 4. First adsorption inlet valve; 5. Inlet pipe; 6. First baffle; 7. Second adsorbent; 8. Second adsorption inlet valve; 9. Solvent tank; 10. Layering tank; 11. Condensation coil; 12. Second baffle; 13. Second grid; 14. Second adsorption outlet valve; 15. First adsorption outlet valve; 6. Chimney; 17. First stripping steam valve; 18. First steam distribution device; 19. Second stripping steam valve; 20. Second steam distribution device; 21. First stripping valve; 22. Stripping pipeline; 23. Second stripping valve; 24. Third baffle; 25. Stripping gas inlet flange short pipe; 26. Condensate discharge valve; 27. Non-condensable gas discharge flange short pipe; 28. Condensate inlet flange short pipe; 29. ​​Solvent outlet flange short pipe; 30. Wastewater outlet flange short pipe; 31. Baffle; 32. Tower bottom plate. Detailed Implementation

[0022] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0023] This utility model provides an integrated tower adsorption-desorption treatment system that takes into account factors such as saving system space, saving material costs, ease of prefabrication, and ease of construction. Through reasonable equipment layout design, adsorber structure design, pipe outlet layout design, and equipment structure simplification, it achieves the effects of reducing the footprint, reducing the amount of system pipes and steel used, and facilitating prefabrication in the manufacturing plant. It can solve the problems of large footprint and high overall cost of decentralized layout in related technologies.

[0024] See Figure 1 and Figure 2 As shown, this is an integrated tower adsorption-desorption treatment system provided by an embodiment of the present invention. The main tower body 1 of the system is a cylindrical tower structure, which integrates all the main functional sections of adsorption and desorption equipment inside the tower. The tower is divided into four functional sections from top to bottom by a first partition 6, a second partition 12 and a third partition 24. The four functional sections are the first adsorption functional section 101, the second adsorption functional section 104, the condensation recovery functional section 102 and the condensate post-treatment functional section 103.

[0025] Specifically, the first adsorption functional section 101 includes a first steam distribution device 18, a first desorption steam valve 17, a first adsorbent 2, a first grid 3, a first adsorption inlet valve 4, a first adsorption outlet valve 15, and a first desorption valve 21, which are combined to form a complete adsorber. The entire first adsorption functional section 101 is separated from other functional sections by a first partition 6. The first adsorption functional section 101 is constructed as follows: the first grid 3 is welded to the inner side of the tower body 1 around its perimeter; the first adsorbent 2 is laid flat on the first grid 3; the first steam distribution device 18 is located on the upper part of the first adsorbent 2 and is fixed to the side wall of the tower body 1; a first desorption steam valve 17 is installed at the inlet of the steam distribution device to switch the steam on and off. An air inlet is opened at the lower part of the first grid 3, and a first adsorption inlet valve 4 is installed on the air inlet; an outlet is opened at the upper right corner of the first adsorbent 2, and a first adsorption outlet valve 15 is installed on the outlet.

[0026] During system operation, in the first adsorption section 101, the first adsorption inlet valve 4 and the first adsorption outlet valve 15 are open, while the first desorption steam valve 17 and the first desorption valve 21 are closed. Organic waste gas is sent to the first adsorbent bed 2 for adsorption treatment via the inlet pipe 5 and the first adsorption inlet valve 4. The clean gas after adsorption treatment is discharged into the chimney 16 via the first adsorption outlet valve 15. When the first adsorbent bed 2 is saturated with organic matter, the first adsorption inlet valve 4 and the first adsorption outlet valve 15 are closed, while the first desorption steam valve 17 and the first desorption valve 21 are opened. Steam is sent to the first adsorption section 101 via the first steam distribution device 18. The steam enters the first adsorbent bed 2, where the adsorbed organic matter is desorbed by steam heating. The desorbed organic matter is then sent to the condensation and recovery section at the bottom of the tower 1 for condensation and recovery treatment via the first desorption valve 21 and the desorption pipe 22. The clean first adsorbent 2 after desorption treatment is then reused for the next adsorption treatment.

[0027] The second adsorption functional section 104 includes a second steam distribution device 20, a second desorption steam valve 19, a second adsorbent 7, a second grid 13, a second adsorption inlet valve 8, a second adsorption outlet valve 14, and a second desorption valve 23, which are combined to form a complete adsorber. The entire second adsorption functional section 104 is separated from other functional sections by a second partition 12. The second adsorption functional section 104 is constructed as follows: the second grid 13 is welded to the inner side of the tower body 1 around its perimeter; the second adsorbent 7 is laid flat on the second grid 13; the second steam distribution device 20 is located on the upper part of the second adsorbent 7 and is fixed to the outer wall of the tower body 1; a second desorption steam valve 19 is installed at the inlet of the steam distribution device to control the steam flow. An air inlet is opened at the lower part of the first grid 3, and a second adsorption inlet valve 8 is installed on the air inlet; an outlet is opened at the upper right corner of the first adsorbent 2, and a second adsorption outlet valve 14 is installed on the outlet.

[0028] During system operation, in the second adsorption functional section 104, the second adsorption inlet valve 8 and the second adsorption outlet valve 14 are open, while the second desorption steam valve 19 and the second desorption valve 23 are closed. Organic waste gas is sent through the inlet pipe 5 to the second adsorbent bed 7 for adsorption treatment before being discharged into the chimney 16. When the second adsorbent bed 7 is saturated with organic matter, the second adsorption inlet valve 8 and the second adsorption outlet valve 14 are closed, while the second desorption steam valve 19 and the second desorption valve 23 are opened. Steam is sent through the first steam distribution device 18 to the first adsorbent bed 2. The organic matter adsorbed in the bed is desorbed by the steam and then sent through the second desorption valve 23 and the desorption pipe 22 to the condensation and recovery functional section at the bottom of the tower body 1 for condensation and recovery treatment. The clean second adsorbent 7 after desorption treatment is then reused for the next adsorption treatment.

[0029] The condensation recovery functional section 102 includes a desorbed gas inlet flange short pipe 25, a condensate coil 11, a condensate discharge valve 26, and a non-condensable gas discharge flange short pipe 27. The condensation recovery functional section is constructed as follows: the entire functional section is separated from other functional sections by a second partition 12 and a third partition 24. The second partition 12 and the third partition 24 are fixed to the tower body 1 by welding. The condensate coil 11 is arranged in the cavity between the second partition 12 and the third partition 24 and the tower body 1. The refrigerant inlet and outlet of the condensate coil 11 are located on the outer wall of the tower body 1.

[0030] When the second adsorption functional section 104 is desorbed, the desorbed organic vapor and excess water vapor enter the condensation recovery functional section through the desorbed gas inlet flange short pipe 25. In the condensation recovery functional section, the high-temperature organic vapor and water vapor from the desorption process are condensed into liquid by the condensation coil 11. The liquid flows to the condensate post-treatment functional section 103 through the condensate discharge valve 26 by gravity. Some of the uncondensed organic non-condensable gases are discharged through the non-condensable gas discharge flange short pipe 27.

[0031] The condensate post-treatment functional section 103 includes a condensate inlet flange short pipe 28, a stratification tank 10, a wastewater outlet flange short pipe 30, a solvent tank 9, and a solvent outlet flange short pipe 29. The entire condensate post-treatment functional section 103 is separated from the condensate recovery functional section by a third partition 24, and is formed by the surrounding straight cylinders of the tower body 1 and the tower body bottom plate 32. The stratification tank 10 and the solvent tank 9 are separated by a fourth partition 31. The condensate inlet flange short pipe 28 and the wastewater outlet flange short pipe 30 are installed on the stratification tank 10. The solvent outlet flange short pipe 29 is installed on the solvent tank 9.

[0032] The condensate from the condensate recovery section enters the stratification tank through the condensate inlet flange short pipe 28. The stratification tank 10 separates water and solvent by gravity. The solvent overflows into the solvent tank 9 for storage after stratification, and the water overflows out of the system through the wastewater outlet flange short pipe 30.

[0033] The first adsorption functional section 101, the second adsorption functional section 104, the condensation recovery functional section 102, and the condensate post-treatment functional section 103 are arranged in an upper and lower stacked manner. The overall system occupies only the size of one adsorption functional section, which significantly reduces the system's footprint compared to the traditional split-type arrangement.

[0034] The first adsorption section 101, the second adsorption section 104, the condensation recovery section 102, and the condensate post-treatment section 103 are all supported by the outer wall of the tower body 1 as fixed support points. The weight of the equipment is borne by the outer wall of the tower body 1, which has reinforcement measures such as reinforcing ribs and reinforcing columns. The first adsorption section 101 and the second adsorption section 104 are located at the top. The desorbed liquid can flow by gravity from the first desorbing valve 21 and the second desorbing valve 23 to the condensation recovery section 102, eliminating the need for the adsorber support frame of the split system and saving a lot of steel and space.

[0035] The outer walls of the first adsorption functional section 101 and the second adsorption functional section 104 are equipped with a first adsorption inlet valve 4 and a second adsorption inlet valve 8, which allows the adsorption inlet pipe 5 to be arranged vertically, saving space occupied by the inlet pipe. With this design, the adsorption inlet pipe 5 and the first adsorption inlet valve 4 and the second adsorption inlet valve 8 can all be accurately cut and installed in the factory, improving installation accuracy and saving on-site installation time.

[0036] The first adsorption functional section 101 and the second adsorption functional section 104 are separated by the first partition 6. The second adsorption functional section 104 and the condensation recovery functional section 102 are separated by the second partition 12. The layered tank 10 and the solvent tank 9 are separated by the fourth partition 31. Adjacent equipment shares a single outer shell. Compared with independent split equipment, this saves on equipment manufacturing material costs.

[0037] The condensation recovery function section 102 is located in the cavity formed by the second partition 12 and the third partition 24 and the tower body 1. The condensation coil 11 is installed in the cavity. Compared with the traditional split arrangement, the equipment adopts an integrated design, eliminating the shell of the independent shell and tube heat exchanger, thus saving equipment manufacturing costs.

[0038] The first adsorption exhaust valve 15 and the second adsorption exhaust valve 14 are installed on the outer wall of the tower body 1. The two exhaust ports are directed to the vertically installed chimney 16. Since the tower body 1 is already quite tall, the chimney 16 does not need to be lengthened much. Fixed reinforcement measures can be installed between the chimney 16 and the tower body 1. Compared with the traditional split arrangement, there is no need to install an additional independent chimney tower, which saves the space occupied by the chimney tower and the cost of tower manufacturing materials.

[0039] After adopting an integrated design, the various functional sections within tower body 1 form a complete unit. As a result, tower body 1 can be fabricated and formed in the factory, and the pipes and valves of each functional section within tower body 1 can be prefabricated and connected in the factory. There is no need to worry about the assembly error caused by uneven foundations on site after prefabrication, as is the case with traditional split-type layouts. During on-site installation, it is only necessary to lift and position the entire unit, which effectively improves the convenience of prefabrication and construction.

[0040] In some optional embodiments, the entire adsorption-desorption system adopts a vertical integrated equipment layout structure. The tower body 1 can be cylindrical, cubic, or cuboid in shape. The tower body material can be metal or non-metal, depending on the project requirements.

[0041] In some optional embodiments, the number of adsorption functional segments can be adjusted according to the specific circumstances of each project, and can be 2, 3, 4, 5, or 6. The outer diameter of each functional segment can be the same or different.

[0042] In some optional embodiments, the number of partitions can be adjusted according to the number of adsorption functional sections configured in the project, and the number can be 3, 4, 5, 6, or 7.

[0043] In some optional embodiments, the cavity formed by the tower body 1, the second partition 12, and the third partition 24 can be square or circular. The number of flow paths for the condenser coil 11 depends on the project requirements and can be dual-flow, triple-flow, quadruple-flow, etc.

[0044] In some optional embodiments, the first adsorbent 2 and the second adsorbent 7 can be various types of adsorbent materials, depending on the project.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0046] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0047] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0048] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated tower-type adsorption-desorption treatment system, characterized in that, It includes: The tower body (1) is divided into a first adsorption functional section (101), a condensation recovery functional section (102) and a condensate post-treatment functional section (103) from top to bottom. The first adsorption functional section (101) is provided with an air inlet pipe (5) and a chimney (16) on the outside, and a first steam distribution device (18) and a first adsorbent (2) are installed inside. The condensation recovery functional section (102) is equipped with a condensation coil (11), and the first adsorption functional section (101) is connected to the condensation recovery functional section (102) through the analysis pipe (22). The internal division of the condensate post-treatment functional section (103) is a solvent tank (9) and a stratification tank (10). The upper ends of the solvent tank (9) and the stratification tank (10) are connected. The condensate recovery functional section (102) is connected to the stratification tank (10) through a condensate inlet flange short pipe (28).

2. The integrated tower adsorption-desorption treatment system according to claim 1, characterized in that: A second adsorption section (104) is provided between the first adsorption section (101) and the condensation recovery section (102). The first adsorption section (101) is connected to the second adsorption section (104) through a pipe. The second adsorption section (104) is connected to the air inlet pipe (5) and the chimney (16). A second steam distribution device (20) and a second adsorbent (7) are installed inside.

3. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: The first steam distribution device (18) is equipped with a first analytical steam valve (17) at its air inlet, and the second steam distribution device (20) is equipped with a second analytical steam valve (19) at its air inlet.

4. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: The first steam distribution device (18) is positioned above the first adsorbent (2), and the second steam distribution device (20) is positioned above the second adsorbent (7).

5. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: The first adsorption functional section (101) is welded with a first grid (3), and the first adsorbent (2) is laid on the first grid (3); the second adsorption functional section (104) is welded with a second grid (13), and the second adsorbent (7) is laid on the second grid (13).

6. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: The intake pipe (5) is equipped with a first adsorption intake valve (4) at one end near the first adsorption functional section (101), and the intake pipe (5) is equipped with a second adsorption intake valve (8) at one end near the second adsorption functional section (104).

7. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: A first adsorption outlet valve (15) is installed at one end of the chimney (16) near the first adsorption functional section (101), and a second adsorption outlet valve (14) is installed at one end of the chimney (16) near the second adsorption functional section (104).

8. The integrated tower adsorption-desorption treatment system according to claim 2, characterized in that: A first desorption valve (21) is installed at one end of the desorption pipe (22) near the first adsorption functional section (101), and a second desorption valve (23) is installed at one end of the desorption pipe (22) near the second adsorption functional section (104).

9. The integrated tower adsorption-desorption treatment system according to claim 1, characterized in that: The condensation recovery functional section (102) is provided with a non-condensable gas discharge flange short pipe (27) and a desorption gas inlet flange short pipe (25) on the outside, and the desorption gas inlet flange short pipe (25) is connected to the desorption pipeline (22).

10. The integrated tower adsorption-desorption treatment system according to claim 1, characterized in that: The solvent tank (9) is provided with a solvent outlet flange short pipe (29) on the outside, and the stratified tank (10) is provided with a wastewater outlet flange short pipe (30) on the outside.

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