Drainage anti-blocking device of carbon washing tower

Abstract

The utility model provides a drainage anti-blocking device of a carbon washing tower, and relates to the technical field of carbon washing towers. The device comprises a filter cartridge, a shade, filter holes, a water guide plate and a supporting piece, the filter cartridge is used for installing and covering a water outlet of the carbon washing tower, a supporting piece is installed at the end, away from the water outlet, of the filter cartridge, a shade is installed on the supporting piece, the end, away from the water outlet, of the filter cartridge is covered with the shade, filter holes are evenly distributed in the side wall of the filter cartridge, and a spiral water guide plate is distributed on the inner wall of the filter cartridge. Black water enters the filter cartridge from side filter holes of the filter cartridge, so that accumulation of solid impurities on the drain pipe and a valve on the drain pipe is reduced; black water is forced to enter the filter cartridge from the space between the shade and the filter cartridge, and large solid impurities cannot enter the filter cartridge; as the black water forms a water flow vortex, the impact force is enhanced, slightly large solid impurities are crushed after being impacted, the impact force of the black water is enhanced, fine impurities are taken away from the drainage pipe, and the problem of blockage is solved.

Description

Technical Field

[0001] This utility model relates to the field of carbon washing tower technology, and more specifically, to a drainage anti-clogging device for carbon washing towers. Background Technology

[0002] In the coal-water slurry gasification process, coal slurry and oxygen are mixed through burners and reacted in the gasifier combustion chamber. Gas and ash enter the quench chamber water bath through downcomers. Most of the ash is discharged into the lock hopper, while some is discharged with the gasifier's black water to the flash evaporation system. Gas, mixed with some ash, rises through the syngas pipeline to the carbon scrubbing tower, where it is again washed in the water bath and then flows upwards through trays, a demister, etc., before being sent downstream for conversion. The ash washed off is discharged with the carbon scrubbing tower's black water to the flash evaporation system. This portion of black water contains a certain amount of ash and solid impurities such as scale residue left in corners after maintenance of equipment like the carbon scrubbing tower.

[0003] The bottom of the carbon scrubbing tower is a cone, with the lower end connected to a drainage pipe. During the initial start-up and operation of the gasifier, solids such as ash and slag can accumulate in drainage bends, regulating valves, and other components, easily causing blockages. Especially during the initial start-up phase or when the gasifier is put into operation simultaneously, the large temperature fluctuations of the equipment can cause scale deposits attached to the corners of the equipment to detach and enter the drainage pipes or regulating valves with the black water. Severe blockages may even require shutdown for repair. Utility Model Content

[0004] The problem this invention aims to solve is that when existing carbon washing towers discharge black water, the drainage pipes at the bottom of the tower and the valves installed on them are easily blocked by solid impurities such as ash or scale in the black water, which can even require shutdown in severe cases.

[0005] To solve the above problems, this utility model provides a drainage anti-clogging device for carbon washing towers, including: a filter cylinder, a cover, filter holes, a water guide plate, and a support component;

[0006] The filter cylinder is used to install and cover the drain outlet of the carbon washing tower. A support is installed at the end of the filter cylinder away from the drain outlet. A cover is installed on the support and covers the end of the filter cylinder away from the drain outlet. Filter holes are evenly distributed on the side wall of the filter cylinder, and a spiral water guide plate is distributed on the inner wall of the filter cylinder.

[0007] Optionally, the diameter of the end of the filter hole near the axis of the filter cylinder is larger than the diameter of the end of the filter hole away from the axis of the filter cylinder.

[0008] Optionally, the water guide plate is provided in multiple pieces, and the multiple water guide plates are evenly distributed along the circumference of the filter cylinder.

[0009] Optionally, the shield is equipped with a stop bar, which is evenly distributed along the edge of the shield.

[0010] Optionally, multiple support members are evenly distributed and installed on the filter cartridge.

[0011] Optionally, the support member includes a guide cylinder, a guide rod, and an elastic element;

[0012] The guide cylinder has a guide cavity inside and is mounted on the shield. One end of the guide rod is slidably mounted in the guide cavity, and the other end of the guide rod extends out of the guide cavity and is connected to the filter cylinder. An elastic element is installed in the guide cavity, and the two ends of the elastic element are respectively connected to the guide cylinder and the guide rod.

[0013] Optionally, a protrusion is symmetrically arranged on one end sidewall of the guide rod, and a plurality of springs are arranged on the inner wall of the guide cylinder along the axial direction and circumferential direction of the guide cylinder, with each protrusion corresponding to a row of springs arranged along the axial direction of the guide cylinder.

[0014] This invention provides a drainage anti-clogging device for carbon washing towers. Compared with the prior art, it has the following advantages:

[0015] The black water is blocked by the shield and enters the filter cartridge through the side filter holes. A small amount of solid impurities pass through the filter holes into the drain pipe, reducing the accumulation of solid impurities in the drain pipe and its valves. After being blocked by the shield, the black water is forced to enter the filter cartridge through multiple support components between the shield and the filter cartridge. Due to the limited gap between the shield and the filter cartridge, large solid impurities cannot enter the filter cartridge. Due to the obstruction of the shield, the black water preferentially enters the filter cartridge along its inner wall along the edge. Because the water guide plate is spiral-shaped, the black water in the filter cartridge forms a water vortex more quickly and easily, which carries slightly larger solid impurities to collide with the filter cartridge and the water guide plate, breaking them down into smaller impurities. Due to the formation of the water vortex, the impact force of the black water is enhanced, improving its ability to flush out fine impurities and carrying them away from the drain pipe. This makes it less likely for solid impurities to accumulate in the drain pipe, drain elbow, regulating valve, and other components, thus solving the problem of blockage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram illustrating the installation of a drainage anti-clogging device inside a carbon washing tower, as provided in an embodiment of this utility model;

[0018] Figure 2 A three-dimensional structural schematic diagram of a drainage anti-clogging device for a carbon washing tower provided for an embodiment of this utility model;

[0019] Figure 3 A cross-sectional schematic diagram of a drainage anti-clogging device for a carbon washing tower provided in this embodiment of the present invention;

[0020] Figure 4 A top view of the filter cartridge provided in an embodiment of this utility model;

[0021] Figure 5 This is a structural schematic diagram of a support member provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Carbon washing tower; 2. Water inlet; 3. Drain pipe; 4. Filter cylinder; 5. Cover; 6. Filter holes; 7. Water guide plate; 8. Support component; 81. Guide cylinder; 82. Guide rod; 83. Guide cavity; 84. Elastic component; 85. Protrusion; 86. Spring; 9. Stop bar. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1 and Figure 2 As shown in the embodiment of this application, a drainage anti-clogging device for a carbon washing tower includes: a filter cylinder 4, a cover 5, filter holes 6, a water guide plate 7, and a support member 8. The filter cylinder 4 is used to install and cover the drain outlet of the carbon washing tower 1. The support member 8 is installed at the end of the filter cylinder 4 away from the drain outlet. The cover 5 is installed on the support member 8 and covers the end of the filter cylinder 4 away from the drain outlet. Filter holes 6 are evenly distributed on the side wall of the filter cylinder 4, and a spiral water guide plate 7 is distributed on the inner wall of the filter cylinder 4.

[0027] Specifically, such as Figure 1 As shown, black water enters carbon washing tower 1 from inlet 2. After being treated in carbon washing tower 1, it is discharged through drain pipe 3 at the bottom of carbon washing tower 1. Before being discharged, the black water passes through a drainage anti-clogging device located at the drain outlet of carbon washing tower 1 to filter and accelerate the process.

[0028] In this embodiment, the black water is blocked by the shield 5, preventing it from directly flowing into the filter cylinder from top to bottom. Firstly, the black water enters the filter cylinder 4 through the side filter holes 6. Large solid impurities in the black water are blocked between the filter cylinder 4 and the carbon washing tower 1, preventing them from entering the drain pipe 3. Only a small amount of solid impurity particles are allowed to enter the drain pipe 3 through the filter holes 6, reducing the accumulation of solid impurities in the drain pipe 3 and at the valves on the drain pipe 3. Secondly, after being blocked by the shield 5, the black water is forced to enter the filter cylinder 4 through multiple supports 8 between the shield 5 and the filter cylinder 4. Due to the limited gap between the shield 5 and the filter cylinder 4, large solid impurities cannot enter the filter cylinder 4. Furthermore, due to the obstruction of the shield 5, the black water preferentially enters the filter cylinder 4 along its inner wall along the edge. At this time, guided by the water guide plate 7 on the inner wall of the filter cylinder 4, the black water falls along the water guide plate 7. Figure 3 As shown, because the guide plate 7 is spiral-shaped, the black water in the filter cylinder 4 forms a water vortex more quickly and easily. The high velocity of the water vortex has a certain centrifugal force, which carries slightly larger solid impurities that enter the filter cylinder 4 through the gap between the shield 5 and the filter cylinder 4 to collide with the filter cylinder 4 and the guide plate 7. These larger solid impurities are then broken down into smaller impurities and enter the drain pipe 3. The formation of the water vortex accelerates the black water entering the drain pipe 3, increasing its impact force and improving its ability to flush out fine impurities. This removes the fine impurities from the drain pipe 3, making it less likely for solid impurities to accumulate in the drain pipe 3, drain elbows, regulating valves, and other components, thus solving the problem of blockage and ensuring the long-term safe and stable operation of the gasification unit. Impurities accumulated at the bottom of the carbon washing tower 1 will be poured out and removed during the furnace cleaning process.

[0029] In optional embodiments of this application, such as Figure 3 As shown, the diameter of the end of the filter hole 6 near the axis of the filter cylinder 4 is larger than the diameter of the end of the filter hole 6 away from the axis of the filter cylinder 4.

[0030] Specifically, for example, the size of filter hole 6 is 10mm on the outside and 11mm on the inside. This design can prevent particles or solid impurities from getting stuck in filter hole 6 and clogging it. Because the diameter of the filter hole 6 is smaller on the outside and larger on the inside, the black water entering the filter cylinder 4 through filter hole 6 is slowed down and the flow rate is reduced. This increases the volume of black water entering the filter cylinder 4 while reducing the disturbance and disruption to the water flow vortex inside the filter cylinder 4. This allows the black water entering from filter hole 6 to flow gently and quickly with the trend of the water flow vortex, increasing the volume of the water flow vortex.

[0031] In an optional embodiment of this application, the water guide plate 7 is provided in multiple pieces, and the multiple water guide plates 7 are evenly distributed along the circumference of the filter cylinder 4. For example... Figure 4As shown, four water guide plates 7 are evenly distributed around the circumference of the filter cylinder 4. Multiple water guide plates 7 can enhance the guidance of black water in the filter cylinder 4, making the water vortex form faster and easier. However, the number of water guide plates 7 should not be too many. It needs to be set appropriately according to the size of the filter cylinder 4. Generally, setting 2 to 6 plates is more appropriate. The width of the water guide plate 7 can be set to 50mm.

[0032] In optional embodiments of this application, such as Figure 2 and Figure 3 As shown, a baffle 9 is installed on the shield 5, and the baffle 9 is evenly distributed along the edge of the shield 5. The baffle 9 divides the gap between the shield 5 and the filter cylinder 4, preventing larger solid impurities from entering the filter cylinder 4 through the gap between the shield 5 and the filter cylinder 4, further reducing the risk of blockage of the drain pipe 3.

[0033] In optional embodiments of this application, such as Figure 3 and Figure 4 As shown, multiple support members 8 are evenly distributed on the filter cylinder 4. The two ends of each support member 8 are connected to the shield 5 and the filter cylinder 4 respectively, maintaining a certain distance between the shield 5 and the filter cylinder 4 to form a gap, facilitating the entry of black water into the filter cylinder 4. The evenly distributed support members 8 ensure that the shield 5 is subjected to uniform force, such as... Figure 4 As shown, four support members are evenly arranged, or three or more support members can be evenly arranged.

[0034] In optional embodiments of this application, such as Figure 3 and Figure 5 As shown, the support member 8 includes a guide cylinder 81, a guide rod 82, and an elastic member 84; the guide cylinder 81 is provided with a guide cavity 83, and the guide cylinder 81 is mounted on the cover 5; one end of the guide rod 82 is slidably mounted in the guide cavity 83, and the other end of the guide rod 82 extends out of the guide cavity 83 and is connected to the filter cylinder 4; the elastic member 84 is installed in the guide cavity 83, and the two ends of the elastic member 84 are respectively connected to the guide cylinder 81 and the guide rod 82.

[0035] Specifically, the elastic element 84 can be a spring. The support element 8 is configured as a component with telescopic and rebound characteristics. When there is a large amount of black water on the shield 5, the elastic element 84 is compressed significantly, the guide rod 82 retracts most of its length into the guide cavity 83, the support element 8 shortens, and the gap between the shield 5 and the filter cylinder 4 decreases. When there is less black water on the shield 5, the elastic element 84 rebounds, the compression decreases, the support element 8 extends, and the gap between the shield 5 and the filter cylinder 4 increases. When there is a large amount of black water on the shield 5, under the action of gravity, the flow rate of black water entering the gap between the shield 5 and the filter cylinder 4 is relatively fast. At this time, the gap between the shield 5 and the filter cylinder 4 is small, and solid impurities remain outside the baffle 9 at the edge of the shield 5 or between the baffle 9 and the filter cylinder 4, preventing larger solid impurities from being impacted into the filter cylinder 4 at high flow rates. When the black water on the shield 5 decreases, the flow rate of black water entering the gap between the shield 5 and the filter cylinder 4 weakens. Solid impurities have accumulated outside the baffle 9 at the edge of the shield 5, or between the shield 5 and the filter cylinder 4. The solid impurities stack up on each other and hinder movement. At this time, although the gap between the shield 5 and the filter cylinder 4 becomes larger, the solid impurities have formed a blocking band around the filter cylinder 4, which can reduce the solid impurities from approaching the filter cylinder 4. At the same time, the larger gap between the shield 5 and the filter cylinder 4 can increase the amount of black water entering the filter cylinder 4 and shorten the drainage time.

[0036] In optional embodiments of this application, such as Figure 5 As shown, protrusions 85 are symmetrically arranged on one side wall of the guide rod 82, and multiple spring sheets 86 are arranged on the inner wall of the guide cylinder 81 along the axial direction and circumferential direction of the guide cylinder 81. Each protrusion 85 corresponds to a row of spring sheets 86 arranged along the axial direction of the guide cylinder 81.

[0037] In this embodiment, a spring plate 86 is provided on the inner wall of the guide cylinder 81. When the protrusion 85 on the guide rod 82 encounters the spring plate 86, it will encounter a certain resistance. With the change of black water in the carbon washing tower 1 and the combined action of the elastic element 84, the guide rod 82 gradually lengthens. Only when the elastic force of the elastic element 84 minus the pressure of the black water above the shield 5 can overcome the obstruction of the spring plate 86 will the protrusion 85 pass over one spring plate 86. When the black water in the carbon washing tower 1 fluctuates, due to the obstruction of the spring plate 86, the shield 5 will only cause the guide rod 82 to sway within a small distance, preventing the length of the support member 8 from changing significantly with the fluctuation of the black water. This prevents abrupt changes in the gap between the shield 5 and the filter cylinder 4, and avoids large solid impurities from entering the filter cylinder 4 before a blocking band is formed around the filter cylinder 4.

[0038] Usage effect:

[0039] The drainage anti-clogging device described in this application was put into use in a carbon washing tower. After startup, sludge was discharged from the bottom of the carbon washing tower, and no large amount of solids was found. When the feed was successfully introduced and the pressure was increased to switch to black water drainage from the carbon washing tower, the previous blockage and drainage failure did not occur. No black water drainage regulating valve jamming (due to large solid blocks) occurred during the operating cycle. After the C furnace was shut down for maintenance, the drainage anti-clogging device was inspected, and the original filter holes 6 were enlarged from 8mm to 10mm, and the guide plate 7 was raised from the lower edge of the upper opening to the top. After comprehensive evaluation, the drainage anti-clogging device described in this application achieved the expected results during use. Therefore, the drainage anti-clogging device described in this application was subsequently installed at the bottom drainage outlets of multiple carbon washing towers. Multiple carbon washing towers operated for at least two cycles after the installation of the drainage anti-clogging device described in this application. This application solves the problem of long-term operation of the gasification unit being affected by drainage blockage in the carbon washing tower.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A drainage anti-clogging device for a carbon washing tower, characterized in that, include: Filter cartridge (4), shield (5), filter holes (6), water guide plate (7) and support (8); The filter cylinder (4) is used to install the drain outlet covered by the carbon washing tower (1). A support member (8) is installed at the end of the filter cylinder (4) away from the drain outlet. A cover (5) is installed on the support member (8). The cover (5) covers the end of the filter cylinder (4) away from the drain outlet. Filter holes (6) are evenly distributed on the side wall of the filter cylinder (4). Spiral water guide plates (7) are distributed on the inner wall of the filter cylinder (4).

2. The anti-clogging device for drainage of the carbon washing tower as described in claim 1, characterized in that, The diameter of the end of the filter hole (6) near the axis of the filter cylinder (4) is larger than that of the end of the filter hole (6) away from the axis of the filter cylinder (4).

3. The anti-clogging device for drainage of the carbon washing tower as described in claim 1, characterized in that, The water guide plate (7) is provided in multiple pieces, and the multiple water guide plates (7) are evenly arranged along the circumference of the filter cylinder (4).

4. The anti-clogging device for drainage of the carbon washing tower as described in claim 1, characterized in that, A stop bar (9) is installed on the cover (5), and the stop bar (9) is evenly distributed along the edge of the cover (5).

5. The anti-clogging device for drainage of the carbon washing tower as described in claim 1, characterized in that, Multiple support members (8) are evenly distributed on the filter cartridge (4).

6. The anti-clogging device for drainage of carbon washing tower as described in any one of claims 1-5, characterized in that, The support member (8) includes a guide cylinder (81), a guide rod (82), and an elastic member (84); The guide cylinder (81) is provided with a guide cavity (83), and the guide cylinder (81) is mounted on the shield (5); one end of the guide rod (82) is slidably mounted in the guide cavity (83), and the other end of the guide rod (82) extends out from the guide cavity (83) and is connected to the filter cylinder (4); an elastic element (84) is installed in the guide cavity (83), and the two ends of the elastic element (84) are respectively connected to the guide cylinder (81) and the guide rod (82).

7. The anti-clogging device for drainage of the carbon washing tower as described in claim 6, characterized in that, The guide rod (82) has symmetrical protrusions (85) on one side wall. The guide cylinder (81) has multiple springs (86) arranged on its inner wall along the axial direction and circumferential direction. Each protrusion (85) corresponds to a row of springs (86) arranged along the axial direction of the guide cylinder (81).

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