A pre-filtering and residue cleaning integrated thermal steady-state salt removal device

Abstract

This utility model relates to the field of thermally stable salt removal technology, specifically an integrated thermally stable salt removal device that combines pre-filtration and residue cleaning. It comprises a pre-filtration chamber, a thermally stable reaction chamber, and a residue separation chamber connected sequentially. The pre-filtration chamber is equipped with multi-stage filter screens with decreasing pore sizes and a rotating scraper assembly. The residue separation chamber contains a centrifuge cylinder. A servo motor, driven by a transmission shaft, synchronously drives the scraper assembly to clean impurities from the filter screens and separate residue from the centrifuge cylinder, achieving integrated operation of pre-filtration anti-clogging and residue centrifugation. This equipment solves the problem of high energy consumption caused by independent operation of traditional processes, significantly reduces maintenance costs, and improves amine purification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of thermal steady-state salt removal technology, specifically a thermal steady-state salt removal device that integrates pre-filtration and residue cleaning. Background Technology

[0002] Heat-stable salts (HSS) are strongly acidic anions (such as formate, acetate, and Cl⁻) generated during natural gas purification. They corrode equipment and reduce the absorption efficiency of amine solutions. HSS combines with amine solutions (such as MDEA) to form non-renewable salts, reducing CO₂ / H₂S absorption capacity, increasing solution foaming tendency, and leading to gas-liquid entrainment losses. Acidic salts accelerate pipeline corrosion and heat exchanger corrosion.

[0003] Therefore, amine solutions require thermal steady-state salt removal treatment. The treatment process includes pre-filtration, thermal steady-state reaction, residue separation, and purified water / residue output. For pre-filtration, the raw water needs to be filtered in multiple stages. During the filtration process, a rotating scraper is required to clean the dirt on the filter screen surface in real time to prevent clogging. For residue separation, centrifugal separation is required, that is, using a rotating conical cylinder to separate the purified water from the residue. These two steps are usually designed to operate independently without effective linkage, which leads to increased operating costs.

[0004] To address this, this technical solution designs an integrated thermal steady-state salt removal device that combines pre-filtration and residue cleaning. Utility Model Content

[0005] The purpose of this invention is to provide an integrated thermal steady-state salt removal device that combines pre-filtration and residue cleaning, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An integrated thermal steady-state salt removal device for pre-filtration and residue cleaning includes a raw water inlet, a pre-filtration chamber, a thermal steady-state reaction chamber, a residue separation chamber, a residue outlet, and a purified water outlet. The raw water inlet is connected to the top of the pre-filtration chamber for inputting the raw water to be treated for thermal steady-state salt removal into the pre-filtration chamber for pre-filtration. The bottom of the pre-filtration chamber is connected to the thermal steady-state reaction chamber, where the pre-filtered raw water is transferred to the thermal steady-state reaction chamber for thermal steady-state reaction, where salt crystallization removes the salt. The water is then transferred to the residue separation chamber for residue separation, and finally, the purified water and residue are output separately.

[0008] The pre-filtration chamber is equipped with multiple sets of circular filter screens arranged in parallel at longitudinal intervals. The pore size of the filter screens decreases from top to bottom, which is used for multi-stage filtration of raw water. Each set of filter screens has a scraping component rotatably mounted on its upper side. The top of the scraping component is equipped with a rotary drive component 1, which drives the scraping component to rotate and treat the impurities remaining on the filter screen to prevent clogging. At the same time, a centrifuge is set in the residue separation chamber. The centrifuge separates the crystallized salt from the water in the mixture after thermal stabilization treatment. A second rotary drive component is set on one side of the top of the centrifuge. The second rotary drive component 2 controls the rotation of the centrifuge for centrifugal operation. The first and second rotary drive components are connected by a rotary connector. The top of the rotary connector is connected to a servo motor. Under the drive of the servo motor, the rotary drive component 1 and the second rotary drive component 2 are driven to rotate synchronously in conjunction with the rotary connector. This achieves anti-clogging treatment of the filter screens and centrifugal treatment in the residue separation chamber, realizing a highly efficient and energy-saving integrated pre-filtration and thermal stabilization treatment mode.

[0009] Compared with the prior art, the beneficial effects of this utility model are: reducing power consumption by synchronously driving slag scraping and centrifugation with a single motor;

[0010] The multi-stage filter screen is cleaned in real time by a triangular scraper, extending the filtration cycle.

[0011] By using a conical centrifuge cylinder in conjunction with gear speed change, the efficiency of residue separation is improved;

[0012] The three-chamber integrated structure reduces the equipment footprint and piping complexity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a thermally stable salt removal device that integrates pre-filtration and residue cleaning.

[0014] Figure 2 This is a schematic diagram of a thermally stable salt removal device that integrates pre-filtration and residue cleaning.

[0015] Figure 3 for Figure 2 A magnified structural diagram of A in the diagram.

[0016] Figure 4 This is a schematic diagram of the connection structure between the triangular scraper and the scraper mounting rod in a thermally stable salt removal device that integrates pre-filtration and residue cleaning.

[0017] Figure 5 This is a schematic diagram of the triangular scraper in a thermally stable salt removal device that integrates pre-filtration and residue cleaning.

[0018] The components include: raw water inlet 10, pre-filtration chamber 11, thermally stable reaction chamber 12, residue separation chamber 13, residue outlet 14, purified water outlet 15, filter screen 16, rotating shaft 17, scraper mounting rod 18, triangular scraper 19, transmission chain one 20, transmission shaft 21, servo motor 22, transmission chain two 23, driving gear 24, driven gear ring 25, spiral guide vane 26, solenoid valve 27, output pipe 28, sleeve 29, centrifuge cylinder 30, separation chamber 31, and support 32. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] 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.

[0021] 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.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5An integrated thermally stable salt removal device for pre-filtration and residue cleaning includes a raw water inlet 10, a pre-filtration chamber 11, a thermally stable reaction chamber 12, a residue separation chamber 13, a residue outlet 14, and a purified water outlet 15. The raw water inlet 10 is connected to the top of the pre-filtration chamber 11 and is used to input the raw water to be treated for thermally stable salt removal into the pre-filtration chamber 11 for pre-filtration. The bottom of the pre-filtration chamber 11 is connected to the thermally stable reaction chamber 12. The pre-filtered raw water is transferred to the thermally stable reaction chamber 12 for thermally stable reaction and is treated by salt crystallization. Then, it is transferred to the residue separation chamber 13 for residue separation. Finally, the purified water and residue are separated and output separately.

[0024] The pre-filtration chamber 11 contains multiple sets of longitudinally spaced, parallel circular filter screens 16, with the pore size decreasing from top to bottom. This multi-stage filtration of the raw water is achieved. Each set of filter screens 16 has a rotatable scraping assembly on its upper side. A rotary drive is mounted on top of the scraping assembly to drive the scraping assembly to rotate and remove residual impurities from the filter screens 16, preventing clogging. Simultaneously, a centrifuge cylinder 30 is installed inside the residue separation chamber 13 to crystallize the thermally stabilized mixture. For the salt and water separation process, a second rotary drive component is installed on one side of the top of the centrifuge tube 30. The second rotary drive component controls the rotation of the centrifuge tube 30 for centrifugal operation. The first rotary drive component and the second rotary drive component are connected by a rotary connector. A servo motor 22 is connected to the top of the rotary connector. Under the drive of the servo motor 22, the first rotary drive component and the second rotary drive component are driven to rotate synchronously in conjunction with the rotary connector. This achieves anti-clogging treatment of the filter screen 16 and centrifugal treatment inside the residue separation chamber 13, realizing an efficient and energy-saving integrated pre-filtration and thermal steady-state treatment mode.

[0025] In this embodiment of the invention, the pre-filtration chamber 11, the thermally stable reaction chamber 12, and the residue separation chamber 13 are connected by an output pipe 28. An electromagnetic valve 27 is provided on the output pipe 28, which controls the mutual transmission and flow of liquids.

[0026] Meanwhile, the raw water inlet 10 is designed with a funnel-shaped structure to facilitate the concentrated and rapid input of raw water. A support 32 is installed on the outside of the residue separation chamber 13 to support the stable operation of the entire equipment. The spiral guide vane 26 is installed inside the thermal steady-state reaction chamber 12. The spiral guide vane 26 is used to enhance water flow turbulence and promote the collision and growth of salt particles. The water temperature is maintained at the optimal temperature for salt crystallization, such as calcium sulfate, which precipitates at 80-90℃, through a PID-regulated heating element (corrosion-resistant titanium alloy) inside the spiral guide vane 26. The structure and operating principle of the thermal steady-state reaction inside the thermal steady-state reaction chamber 12 are all conventional technologies and will not be described in detail here.

[0027] A sleeve 29 is installed on the top of the centrifuge tube 30. The sleeve 29 is rotated and sealed onto the output pipe 28 at the bottom of the thermally stable reaction chamber 12. That is, while the centrifuge tube 30 is rotating, the mixed liquid input along the sleeve 29 is fully received.

[0028] In one embodiment of the present invention, the scraping assembly includes a rotating shaft 17 rotatably disposed above the middle of each set of filter screens 16. The top side of the rotating shaft 17 is positioned on the inner wall of the pre-filtration chamber 11 or the bottom center of the filter screen 16 via a connecting sleeve. Multiple equally spaced scraper mounting rods 18 are radially installed at the bottom of the rotating shaft 17. A triangular scraper 19 is installed at the bottom of the scraper mounting rod 18. The bottom wall of the triangular scraper 19 contacts the upper surface of the filter screen 16. When the rotating shaft 17 rotates, the triangular scraper 19 is controlled to rotate along the upper surface of the filter screen 16, thereby scraping away the impurities remaining at the filter holes. The length of the triangular scraper 19 is slightly smaller than the diameter of the filter screen 16, so that it can make full contact with the upper surface of the filter screen 16.

[0029] The rotary drive unit includes a sprocket mounted on the rotary shaft 17. A transmission chain 20 is rotatably connected to the sprocket. The end of the transmission chain 20 away from the rotary shaft 17 moves through the side wall of the pre-filter chamber 11 and connects to the rotary connector. That is, under the transmission of the transmission chain 20, the kinetic energy of the rotary connector is transmitted to the rotary shaft 17, thereby driving the triangular scraper 19 to rotate.

[0030] Specifically, a sealing ring is provided at the position where the transmission chain 20 makes contact with the side wall of the pre-filter chamber 11 to prevent liquid leakage;

[0031] The rotating connector includes a drive shaft 21 vertically arranged on one side of the pre-filtration chamber 11, the thermally stable reaction chamber 12, and the residue separation chamber 13. A sprocket is also installed on the drive shaft 21 at the position corresponding to the outer end of the drive chain 20, that is, the outer end of the drive chain 20 is rotatably connected to the sprocket on the drive shaft 21. The top of the drive shaft 21 is connected to a servo motor 22 through a coupling. That is, under the drive of the servo motor 22, the drive shaft 21 is rotated, and then the kinetic energy is transferred to the rotating shaft 17 in conjunction with the drive chain 20. The servo motor 22 is positioned on the pre-filtration chamber 11 by a fixing rod.

[0032] The second rotary drive unit includes a driven gear ring 25 mounted on the outer circumferential wall of the sleeve 29. One side of the driven gear ring 25 is engaged with a driving gear 24. The bottom of the driving gear 24 is rotatably connected to the top wall of the residue separation chamber 13 via a rotating rod. A sprocket is also mounted on the top of the second transmission chain 23. One side of the sprocket is connected to a sprocket on the transmission shaft 21 via the second transmission chain 23. Thus, under the transmission of the second transmission chain 23, the kinetic energy of the servo motor 22 is transferred to the centrifuge cylinder 30, and then the centrifuge cylinder 30 is controlled to rotate to generate centrifugal force, thereby separating the residue and purified water from the input mixture.

[0033] Since the rotational power required by the centrifuge drum 30 is much greater than the kinetic energy of the triangular scraper 19, the power transmission between the drive shaft 21 and the sleeve 29 can be adjusted by a gear assembly during actual operation. Specifically, a drive tooth is installed at the bottom of the drive shaft 21, with one side of the drive tooth meshing with the active tooth 24, and the active tooth 24 meshing with the driven gear ring 25. By adjusting the tooth ratio between the drive tooth and the active tooth 24 and the driven gear ring 25, the speed transmitted to the driven gear ring 25 can be increased by a certain multiple while the rotational speed of the drive shaft 21 remains constant. The specific tooth ratio can be adjusted according to the actual rotational speed of the servo motor 22 and the required rotational speed of the centrifuge drum 30. This design is a common situation in gear transmission and will not be described in detail here, but it does not affect the smooth implementation and integrity of this technical solution.

[0034] In a preferred embodiment of the present invention, the centrifuge cylinder 30 is configured as a conical structure, and the bottom of the centrifuge cylinder 30 is connected to a residue output port 14. A separation chamber 31 is provided on the inner side of the residue separation chamber 13 corresponding to the outer side of the centrifuge cylinder 30. The mixed liquid transferred to the inside of the centrifuge cylinder 30 is centrifuged by the rotation of the centrifuge cylinder 30 to separate the purified water and the residue. The residue is output along the residue output port 14, and the purified water is output along the purified water outlets 15 on both sides, thereby realizing the residue separation operation.

[0035] The output residue is transferred to the collection chamber and then processed by the cleaning mechanism inside the chamber. The collection chamber and the cleaning mechanism can be connected with existing technologies for the removal of thermally stable salts, which will not be elaborated on or limited here.

[0036] 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.

[0037] Raw water enters the pre-filtration chamber 11 through inlet 10. Multi-stage filter screens 16 progressively trap impurities. Servo motor 22 synchronously drives the scraper assembly to rotate and clean the filter screens, preventing clogging. The filtered liquid enters the thermally stable reaction chamber 12 through outlet pipe 28, where it crystallizes under controlled temperature conditions. The mixed liquid enters the residue separation chamber 13, where centrifuge cylinder 30 rotates at high speed to separate the residue from the purified water. The residue is discharged from the bottom outlet 14, and the purified water is output from the side outlet 15.

[0038] It should be understood that in this application, all rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each part is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that each part in this application is made of metal or plastic material with suitable strength in the relevant field to ensure that its structural rigidity meets the actual requirements. Even though it is described in this specification, it can be implemented and understood by those skilled in the art by referring to the existing related technology.

[0039] 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. An integrated thermally stable salt removal device for pre-filtration and residue cleaning, comprising a raw water inlet (10), a pre-filtration chamber (11), a thermally stable reaction chamber (12), a residue separation chamber (13), a residue outlet (14), and a purified water outlet (15); wherein the raw water inlet (10) is connected to the top of the pre-filtration chamber (11), and the bottom of the pre-filtration chamber (11) is connected to the thermally stable reaction chamber (12), characterized in that, The pre-filtration chamber (11) is equipped with multiple sets of circular filter screens (16) arranged in parallel with longitudinal intervals. The filter screens (16) distributed from top to bottom have progressively smaller pore sizes. Each set of filter screens (16) is rotatably equipped with a scraping component on its upper side. A rotary drive component is installed on the top of the scraping component. The rotary drive component is used to drive the scraping component to rotate and process the impurities remaining on the filter screens (16). The residue separation chamber (13) is equipped with a centrifuge cylinder (30). The centrifuge cylinder (30) separates the crystallized salt from the water in the mixed liquid after thermal stabilization treatment. A rotary drive component is installed on one side of the top of the centrifuge cylinder (30). The rotary drive component and the rotary drive component are connected by a rotary connector. A servo motor (22) is connected to the top of the rotary connector.

2. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 1, characterized in that, The pre-filtration chamber (11), the thermally stable reaction chamber (12), and the residue separation chamber (13) are connected by an output pipe (28), and a solenoid valve (27) is installed on the output pipe (28).

3. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 2, characterized in that, The raw water inlet (10) is configured as a funnel-shaped structure. A bracket (32) is installed on the outside of the residue separation chamber (13). A spiral guide vane (26) is installed inside the thermal steady-state reaction chamber (12). A heating element is PID-regulated inside the spiral guide vane (26).

4. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 3, characterized in that, The centrifuge tube (30) is fitted with a sleeve (29) at the top, and the sleeve (29) is rotated and sealed onto the output pipe (28) at the bottom of the thermally stable reaction chamber (12).

5. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 4, characterized in that, The scraping assembly includes a rotating shaft (17) rotatably disposed above the middle of each group of filter screens (16). The top side of the rotating shaft (17) is positioned on the inner wall of the pre-filter chamber (11) or the bottom middle of the filter screen (16) by a connecting sleeve rod. Multiple equally spaced scraper mounting rods (18) are radially installed at the bottom of the rotating shaft (17). A triangular scraper (19) is installed at the bottom of the scraper mounting rod (18). The bottom wall of the triangular scraper (19) is in contact with the upper surface of the filter screen (16).

6. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 5, characterized in that, The rotary drive includes a sprocket mounted on a rotating shaft (17), and a transmission chain (20) is rotatably connected to the sprocket. The end of the transmission chain (20) away from the rotating shaft (17) moves through the side wall of the pre-filter chamber (11) and is connected to the rotary connector.

7. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 6, characterized in that, The rotating connector includes a drive shaft (21) vertically arranged on one side of the pre-filtration chamber (11), the thermally stable reaction chamber (12), and the residue separation chamber (13). A sprocket is also installed on the drive shaft (21) at the position corresponding to the outer end of the drive chain (20). A servo motor (22) is connected to the top of the drive shaft (21) through a coupling. One side of the servo motor (22) is positioned on the pre-filtration chamber (11) by a fixing rod.

8. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 7, characterized in that, The second rotary drive component includes a driven gear ring (25) mounted on the outer circumferential wall of the sleeve (29). One side of the driven gear ring (25) is engaged with a driving gear (24). The bottom of the driving gear (24) is rotatably connected to the top wall of the residue separation chamber (13) via a rotating rod. A sprocket is also mounted on the top of the second transmission chain (23). One side of the sprocket is connected to a sprocket set on the transmission shaft (21) via the second transmission chain (23).

9. The integrated thermal steady-state salt removal equipment for pre-filtration and residue cleaning according to claim 8, characterized in that, The centrifuge tube (30) is configured as a conical structure, with a residue output port (14) connected to the bottom of the centrifuge tube (30), and a separation chamber (31) is provided on the inner side of the residue separation chamber (13) corresponding to the outer side of the centrifuge tube (30).

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