Detachable pre-filtering and cleaning device for removing thermal stable salt

Abstract

The utility model relates to the technical field of thermal steady-state salt treatment devices, in particular to a detachable pre-filtering cleaning device for removing thermal steady-state salt, which comprises a pretreatment box, a plurality of groups of longitudinal parallel filter screens which are detachably mounted and a pH (potential of hydrogen) adjusting bin. The filter screen is of a two-section type plate frame structure, plate frames on the two sides are connected with inserting plates through inserting grooves and provided with supporting and moving assemblies, a screw cylinder is rotated to drive a screw rod, and the plate frames are controlled to move relatively so as to compress the end buffering sealing gasket or be separated and detached. The supporting transfer rods and the fastening plates are matched with the inner wall of the pretreatment box to achieve stable positioning. According to the device, quick mounting and dismounting are realized through modular design, the problem that a traditional fixed filter screen is inconvenient to clean is solved, meanwhile, the multi-stage filtering design is adaptive to different particle impurities, and the pre-filtering efficiency and the stability of an amine liquid treatment system are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thermally stable salt treatment devices, specifically a detachable pre-filtration and cleaning device for thermally stable salt removal. Background Technology

[0002] Thermally stable salts are non-renewable salts formed during the amine desulfurization process when amine solutions (such as MEA, DEA, MDEA, etc.) react with acidic gases (such as CO2, H2S) due to the presence of impurities (such as O2, SO3, organic acids, etc.). These salts do not decompose at high temperatures (hence the term "thermally stable") and accumulate in the amine solution, leading to the following problems: reduced effective concentration of amine solution / industrial wastewater and desulfurization efficiency, aggravated equipment corrosion, and increased risk of system foaming.

[0003] Therefore, physical or chemical methods are generally used in thermal steady-state salt removal devices to remove HSS from amine solutions, restore the activity of the amine solution, extend its service life, and reduce operating costs. Common removal technologies include ion exchange, electrodialysis, distillation, and chemical precipitation.

[0004] Before removal, the amine solution / industrial wastewater needs to be pre-filtered to remove suspended solids and large particulate impurities, thereby protecting the subsequent equipment so that it can operate normally and smoothly. However, most existing filter screens adopt an integrated structure and are fixedly installed in the filter box. Because the filter screen is used to filter suspended solids and large particulate impurities, it needs to be cleaned every once in a while. The integrated structure and fixed installation make it inconvenient to disassemble the filter screen.

[0005] In response, this technical solution proposes a detachable pre-filtration and cleaning device for thermal steady-state salt removal. Summary of the Invention

[0006] The purpose of this invention is to provide a detachable pre-filtration and cleaning device for thermal steady-state salt removal, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A detachable pre-filtration and cleaning device for removing thermally stable salts includes multiple sets of longitudinally parallel filter screens detachably installed inside a pretreatment tank. The filter screens have progressively smaller pore sizes from top to bottom, performing multi-stage filtration of the input amine solution / industrial product. A pH adjustment chamber is located at the bottom of the pretreatment tank to adjust the pH of the filtered amine solution / industrial product for subsequent processing. One side of the pH adjustment chamber is connected to a thermally stable salt removal unit via a connecting pipe for subsequent thermally stable salt removal operations. The internal cross-section of the pretreatment tank is rectangular to accommodate the horizontally movable installation and removal of the filter screens, and the top is horizontal. The filter screen has evenly distributed longitudinal through holes for filtration. It adopts a two-section structure, including two sets of laterally movable plates and frames. The ends of the two plates and frames that are far apart from each other are equipped with end buffer sealing gaskets. The sidewalls of the end buffer sealing gaskets make buffer contact with the inner wall of the pretreatment box. The sidewalls of the two plates and frames that are close to each other are connected by a plug-in connection. At the same time, a support and movement component is set between the bottom of the two plates and frames to control the two plates and frames to move away from each other and contact the inner wall of the pretreatment box for positioning, or to move closer to each other and be disassembled from the side wall of the pretreatment box. This realizes a connection mode for quick installation and removal of the plates and frames inside the pretreatment box.

[0009] Compared with the prior art, the beneficial effects of this utility model are: by using a two-section plate frame and a movable support assembly for the filter screen, the disassembly process is simplified and the maintenance difficulty is reduced.

[0010] Liquid leakage is prevented by compressing the end buffer sealing gasket against the inner wall of the pretreatment tank and increasing friction with the reinforcement groove.

[0011] By using the support transfer rod and the telescopic cylinder in tandem, the force is balanced during the installation of the plate frame, preventing displacement. Attached Figure Description

[0012] Figure 1 This is a partial structural diagram of the pretreatment box in a detachable pre-filtration and cleaning device for thermal steady-state salt removal;

[0013] Figure 2 This is a schematic diagram of the structure of a filter screen in a detachable pre-filtration and cleaning device for thermal steady-state salt removal;

[0014] Figure 3 for Figure 2 A magnified structural diagram of A in the middle;

[0015] Figure 4 for Figure 2 An enlarged structural diagram of B in the diagram;

[0016] The components include: a pretreatment box 10, a filter screen 11, a pH adjustment chamber 12, a connecting pipe 13, a filter plate 14, a plate frame 15, an end buffer sealing gasket 16, a plug groove 17, a plug plate 18, a screw barrel 19, a screw 20, a support transfer rod 21, a connecting sleeve 22, a fastening plate 23, and a reinforcement groove 24. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-4A detachable pre-filtration and cleaning device for thermally stable salt removal includes multiple sets of longitudinally parallel filter screens 11 detachably installed inside a pretreatment tank 10. The filter screens 11 have progressively smaller pore sizes from top to bottom, performing multi-stage filtration of the input amine solution / industrial product. A pH adjustment chamber 12 is provided at the bottom of the pretreatment tank 10 to adjust the pH of the filtered amine solution / industrial product to suit subsequent processing. One side of the pH adjustment chamber 12 is connected to a thermally stable salt removal unit via a connecting pipe 13 for subsequent thermally stable salt removal operations. The internal cross-section of the pretreatment tank 10 is rectangular to accommodate the horizontally movable installation and removal of the filter screens 11, and the top is horizontal and has an opening. The filter screen 11 has evenly distributed longitudinal through holes for filtration. It adopts a two-section structure, including two sets of laterally movable plate frames 15. The ends of the two plate frames 15 that are far apart from each other are equipped with end buffer sealing gaskets 16. The sidewalls of the end buffer sealing gaskets 16 are in buffer contact with the inner wall of the pretreatment box 10. The sidewalls of the two plate frames 15 that are close to each other are connected by a plug-in connection. At the same time, a support and movement assembly is provided between the bottoms of the two plate frames 15 to control the two plate frames 15 to be positioned far apart from each other and in contact with the inner wall of the pretreatment box 10 or to be close together and disassembled from the sidewall of the pretreatment box 10. This realizes a connection mode in which the plate frames 15 are placed inside the pretreatment box 10 for quick installation and removal.

[0022] In this embodiment of the invention, a filter plate 14 is fitted on the outer side wall of the plate frame 15 to maintain the overall stability of the plate frame 15.

[0023] One side of the plate frame 15 has a lower insertion groove 17 at one end, and the other side of the plate frame 15 has an insertion plate 18 installed at the position corresponding to the insertion groove 17. When adjusting the relative movement of the two plate frames 15, the insertion plate 18 is controlled to move inside the insertion groove 17, and the top of the insertion groove 17 and the insertion plate 18 remain horizontal.

[0024] The supporting moving mechanism includes a movable support assembly located in the middle of the two side frame 15 and a telescopic support assembly located on both sides of the movable assembly and fixed to the bottom of the frame 15.

[0025] Both the movable support assembly and the telescopic support assembly include a support transfer rod 21 fixed to the bottom of the two side frame 15 by a connecting sleeve 22. The support transfer rods 21 on the same side frame 15 are distributed in parallel. A fastening plate 23 is installed on the end of the support transfer rod 21 facing the inner wall of the pretreatment box 10. A reinforcing groove 24 is provided on the side of the fastening plate 23 that contacts the inner wall of the pretreatment box 10. The reinforcing groove 24 is used to increase the friction force in contact with the inner wall of the pretreatment box 10, thereby improving the fastening stability.

[0026] Both sets of support transfer rods 21 in the movable support assembly are equipped with screws 20 at their close ends. The ends of the screws 20 are threadedly connected to a set of screw cylinders 19. By rotating the screw cylinders 19, the depth of the screws 20 at both ends in the screw cylinders 19 can be adjusted. Then, with the support transfer rods 21 fixedly connected to the bottom of the plate frame 15, the two plate frames 15 on both sides are controlled to move relative to each other. At this time, the end buffer sealing gasket 16 is simultaneously driven to compress and contact the inside of the pretreatment box 10 to prevent unfiltered liquid from falling. That is, with the cooperation of the end buffer sealing gasket 16 and the inner wall of the pretreatment box 10 and the fastening plate 23 and the inner wall of the pretreatment box 10, the plate frame 15 is fully fixed.

[0027] The ends of the two sets of support transfer rods 21 in the telescopic support assembly are telescopically connected to telescopic cylinders. When the screw cylinder 19 controls the screw 20 to move, the ends of the support transfer rods 21 are placed inside the telescopic cylinders and move, so that the two side plate frames 15 are stably supported by the support transfer rods 21 and the telescopic cylinders on both sides.

[0028] In one embodiment of the present invention, the size of the contact surface between the fastening plate 23 and the inner wall of the pretreatment box 10 can be adapted to the area of ​​the plate frame 15 to ensure that the positioning area controlling the contact between the fastening plate 23 and the pretreatment box 10 can control the plate frame 15 from falling. Generally, the ratio between the side wall area of ​​the fastening plate 23 and the side wall area at the end of the plate frame 15 is 1:3, but the specific ratio can be adjusted according to the actual operation.

[0029] The end buffer sealing gasket 16 can be made of fluororubber, EPDM rubber, polypropylene, etc., which have certain corrosion resistance and high elasticity.

[0030] In a preferred embodiment of the present invention, the width of the plate frame 15 plus the width of the side filter plate 14 is the same as the width inside the pretreatment box 10, ensuring that the plate frame 15 placed inside the pretreatment box 10 can achieve a sufficient filtration effect. To ensure the accuracy of installation, a sealing layer of the same material as the end buffer sealing gasket 16 is wrapped on the outer wall of the filter plate 14.

[0031] The working principle of this utility model is as follows: In the idle position of this device, all the aforementioned driving components (representing power elements, electrical devices, and compatible power supplies) are connected via wires. The electrical connections are completed in sequence between the working components. The detailed connection methods are well-known in the field. The following mainly describes the working principle and process, without further explanation of the electrical control.

[0032] Installation stage: Insert the two side frames into the pretreatment box 10, align the plug plate 18 with the plug slot 17, rotate the screw cylinder 19 to drive the screw 20 to move the support transfer rod 21, so that the frame 15 extends to both sides, the end buffer sealing gasket 16 fits tightly with the inner wall of the box, and the fastening plate 23 increases the friction through the reinforcing groove 24 to fix the position.

[0033] Filtration stage: The amine solution enters from the top of the pretreatment tank 10 and passes through the multi-stage filter screen 11 to remove suspended solids and particulate impurities layer by layer. After filtration, the liquid flows into the pH adjustment chamber 12 for neutralization treatment and is then transported to the thermally stable salt removal unit through the connecting pipe 13.

[0034] Disassembly and cleaning: Rotate the screw barrel 19 in the opposite direction to retract the screw 20. The two side frames 15 move towards the middle, the end buffer sealing gasket 16 detaches from the box wall, the support transfer rod 21 and the telescopic cylinder retract, and the entire frame can be pulled out from the side of the pretreatment box for easy cleaning or replacement of the filter plates.

[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A detachable pre-filtration and cleaning device for thermally stable salt removal, characterized in that, include: The pretreatment box (10) is equipped with a pH adjustment chamber (12) at the bottom, and the pH adjustment chamber is connected to the thermally stable salt removal unit through a connecting pipe (13); Multiple sets of longitudinally parallel filter screens (11) are detachably installed in the pretreatment box (10), with the pore size decreasing from top to bottom; The filter screen (11) includes two horizontally movable plate frames (15), with a filter plate (14) sleeved on the outside of the plate frame, and the two plate frames are connected to the plug plate (18) through the plug groove (17). The supporting moving mechanism includes a moving support assembly and a telescopic support assembly, both located at the bottom of the plate frame. It includes a screw cylinder (19), a screw rod (20), a support transfer rod (21), and a telescopic cylinder, which are used to control the extension and retraction of the plate frame.

2. The detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 1, characterized in that, The plate frame (15) is provided with end buffer sealing gaskets (16) at both ends, which are made of fluororubber or EPDM rubber and are in elastic contact with the inner wall of the pretreatment box (10).

3. The detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 1, characterized in that, In the support moving assembly, two sets of screws (20) are threaded to both ends of the screw cylinder (19), and the support transfer rod (21) is fixed to the bottom of the plate frame. Its end is provided with a fastening plate (23), and a reinforcing groove (24) is opened on the contact surface of the fastening plate to increase friction.

4. The detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 1, characterized in that, The top of the insertion slot (17) is flush with the top of the insertion plate (18), and the insertion plate (18) slides along the insertion slot (17) when the plate frame moves.

5. A detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 3, characterized in that, The ratio of the side wall area of ​​the fastening plate (23) to the end area of ​​the plate frame (15) is 1:

3.

6. The detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 1, characterized in that, The inner wall of the pretreatment box (10) is a rectangular structure, which is adapted to the horizontal movement of the plate frame (15).

7. The detachable pre-filtration and cleaning device for thermally stable salt removal according to claim 1, characterized in that, In the telescopic support assembly, the end of the support transfer rod (21) is slidably connected to the telescopic cylinder to form a telescopic support structure.

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