Slag water treatment system in pulverized coal gasification process

Abstract

The invention discloses a slag water treatment system in a pulverized coal gasification process, and relates to the field of slag water treatment.The slag water treatment system comprises an external supporting cylinder, the inner wall of the external supporting cylinder is fixedly connected with a bottom plate, the two sides of the top wall of the bottom plate are fixedly connected with vertical plates, and the tops of the vertical plates are rotationally connected with a filter barrel; the bottom of the filter barrel is rotatably connected with a stirring shaft through a shaft sleeve, the outer wall of the stirring shaft is fixedly connected with stirring blades, and the bottom wall of the bottom plate is fixedly connected with a motor. The motor is started to drive the driving shaft to rotate, and then the stirring shaft is driven to rotate synchronously, so that stirring blades rotate to turn over slag in the filter barrel, liquid in the filter barrel can be leaked out more quickly through leakage holes in the filter barrel, and meanwhile, in the rotating process of the driving shaft, the slag in the filter barrel can be filtered out more conveniently. The universal driving shaft is driven to rotate under the transmission action of the bevel gear set, meanwhile, the filter barrel is driven to rotate through the extension block, liquid in the filter barrel is discharged more quickly by means of centrifugal force in the rotating process of the filter barrel, and the liquid discharging efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of slag and water treatment, and more specifically to a slag and water treatment system for a pulverized coal gasification process. Background Technology

[0002] Slag effluent produced during coal gasification power generation is a type of wastewater containing a large amount of solid particles and dissolved substances. Direct discharge of this effluent without treatment will cause serious environmental pollution. It may contain harmful substances such as heavy metals and organic matter, which can pollute water bodies and soil, disrupt the balance of ecosystems, and potentially threaten human health.

[0003] The core methods for treating slag water generated from coal gasification power generation include steps such as filtration, sedimentation, cyclone grit removal, high-pressure flash evaporation, and vacuum flash evaporation. Among these, the slag water undergoes preliminary filtration through filtration equipment to remove larger solid impurities. This requires the use of filtration devices. However, existing filtration devices have the following problems: when filtering slag water, larger solid impurities inside the slag water may clog the filter holes of the filter barrel, resulting in low overall filtration efficiency of the filter barrel and affecting subsequent slag water treatment.

[0004] Therefore, it is necessary to invent a slag and water treatment system for the pulverized coal gasification process to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a slag and water treatment system for the pulverized coal gasification process, in order to solve the problem mentioned in the background art that when existing filtration devices filter slag and water, large solid impurities inside the slag and water are likely to clog the filter holes of the filter barrel, resulting in low overall filtration efficiency of the filter barrel and affecting the subsequent treatment of slag and water.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a slag and water treatment system for pulverized coal gasification, comprising an external support cylinder, a bottom plate fixedly connected to the inner wall of the external support cylinder, vertical plates fixedly connected to both sides of the top wall of the bottom plate, a filter bucket rotatably connected to the top of the vertical plates, a stirring shaft rotatably connected to the bottom of the filter bucket via a bushing, stirring blades fixedly connected to the outer wall of the stirring shaft, and a motor fixedly connected to the bottom wall of the bottom plate, and further comprising:

[0007] The installation assembly has installation notches on both sides of the top of the filter bucket, and the installation notches are movably connected to the installation blocks through crossbars. The ends of the installation blocks match the annular groove, which is located inside the outer support cylinder, so as to facilitate the installation of the filter bucket and the outer support cylinder.

[0008] The linkage assembly includes a drive shaft driven by the output shaft of the motor, with the upper end of the drive shaft connected to the lower end of the stirring shaft. A linkage shaft is movably fitted onto the outer wall of the drive shaft. The drive shaft and the linkage shaft are connected by a bevel gear set, with a protective cover fitted around the bevel gear set. The lower end of the protective cover is fixedly connected to the base plate. An extension block is fixedly connected to the outer wall of the linkage shaft, with the end of the extension block engaging with a slot at the bottom of the filter bucket. The rotation of the drive shaft drives the stirring shaft and the filter bucket to rotate synchronously but in opposite directions, accelerating the drainage of liquid.

[0009] Preferably, the bottom of the filter barrel is provided with an annular groove four, and the interior of the annular groove four is movably connected to the top of the upright plate. The two upright plates are arc-shaped, and the upright plates support the filter barrel to ensure the stability of the filter barrel during installation and rotation, and extend the service life of the entire device.

[0010] Preferably, the two end walls of the crossbar are fixedly connected to the two side walls of the mounting notch, and the outer ring of the crossbar is movably fitted with a torsion spring. The two ends of the torsion spring are fixedly connected to the side wall of the mounting notch and the mounting block movably fitted on the outer ring of the crossbar, respectively. The force applied by the torsion spring makes the upper end of the mounting block match the annular groove more firmly, ensuring that the filter barrel and the external support cylinder are installed more firmly, avoiding displacement of the filter barrel during use, and making it convenient to remove the filter barrel after moving the mounting block.

[0011] Preferably, the mounting block is in the shape of a "7", and the outer wall of the top protruding part of the mounting block is movably connected to the annular groove, which makes it easy to move the mounting block so that the upper end of the mounting block matches the annular groove without affecting the rotation of the filter barrel, thus ensuring the stability of the filter barrel when it rotates.

[0012] Preferably, the lower end of the stirring shaft extends to the bottom of the filter bucket, and a protrusion is fixedly connected to the side wall of the lower end of the stirring shaft. The outer wall of the lower end of the stirring shaft and the outer wall of the protrusion fixedly connected to the side wall of the stirring shaft match the inner wall of the fitting groove provided at the top of the drive shaft. In this way, the stirring shaft can be driven to rotate synchronously when the drive shaft rotates.

[0013] Preferably, the stirring blade is U-shaped, and two blocks are fixedly connected to the top of the two vertical rods of the stirring blade. The outer walls of the two blocks are attached to the inner wall of the annular groove II to achieve a movable connection. The annular groove II is located inside the filter barrel. When the stirring shaft rotates, it drives the stirring blade to rotate, which flips the slag inside the filter barrel to promote drainage. When the stirring blade rotates, the two blocks that match the annular groove II ensure the stability of the stirring blade rotation.

[0014] Preferably, there is a gap between the outer wall of the drive shaft and the inner wall of the pre-set through hole inside the linkage shaft fitted outside the drive shaft, and the upper end of the linkage shaft extends to the outside of the protective cover. The linkage shaft and the through hole at the top of the protective cover are rotatably connected by a bearing, ensuring that the drive shaft and the linkage shaft connected to the drive shaft by a bevel gear set do not affect each other when they rotate in different directions.

[0015] A limiting ring is fixedly installed on the outer wall of the drive shaft, and the outer wall of the limiting ring is in contact with the inner wall of the annular groove three provided inside the linkage shaft to achieve a rotational connection, ensuring that the rotational connection between the drive shaft and the linkage shaft does not fall off, while not affecting the movable connection between the drive shaft and the linkage shaft.

[0016] Preferably, the bevel gear set consists of three meshing bevel gears, bevel gear one, bevel gear two, and bevel gear three, as well as an auxiliary shaft fitted inside bevel gear three. The end of the auxiliary shaft is fixedly connected to the inner wall of the protective cover. In this way, when the drive shaft rotates, the bevel gear set can drive the linkage shaft to rotate synchronously but in different directions.

[0017] Preferably, the first bevel gear and the second bevel gear are fixedly mounted on the outer rings of the drive shaft and the linkage shaft, respectively, so that when the drive shaft rotates, it drives the linkage shaft to rotate synchronously but in opposite directions.

[0018] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0019] 1. This invention drives the rotation of the drive shaft by starting the motor, which in turn drives the synchronous rotation of the stirring shaft. This causes the stirring blades to agitate the slag inside the filter barrel, making it easier for the liquid inside the filter barrel to drain out through the internal holes of the filter barrel more quickly. At the same time, during the rotation of the drive shaft, the linkage shaft is driven to rotate by the transmission action of the bevel gear set. Simultaneously, the filter barrel is driven to rotate by the extension block. During the rotation of the filter barrel, the liquid inside the filter barrel is discharged more quickly by centrifugal force, ensuring drainage efficiency.

[0020] 2. Furthermore, due to the meshing connection of the gears, the upper and lower bevel gears one and two in the bevel gear set rotate in opposite directions, that is, the drive shaft and the linkage shaft rotate in opposite directions. This results in two forces acting in opposite directions, which cause the liquid inside the filter bucket to be discharged quickly. Moreover, the two forces do not interfere with each other, ensuring higher drainage efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a perspective view of the overall structure of the present invention;

[0023] Figure 2 This is a perspective view of the internal structure of the overall structure of the present invention (partially cut section of the external support cylinder);

[0024] Figure 3 This is a perspective view of the overall structure of the filter bucket of the present invention;

[0025] Figure 4 This is a perspective view of the internal structure of the filter barrel (partially cut out) of the present invention;

[0026] Figure 5 This is a perspective view of the internal structure of the protective cover (partially cut out) of the present invention;

[0027] Figure 6 This is a three-dimensional view of the internal structure of the linkage shaft (partially cut out) of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. External support cylinder; 2. Base plate; 3. Vertical plate; 4. Filter barrel; 5. Mounting assembly; 501. Mounting notch; 502. Crossbar; 503. Mounting block; 504. Annular groove one; 6. Stirring shaft; 7. Stirring blade; 8. Annular groove two; 9. Motor; 10. Linkage assembly; 101. Drive shaft; 102. Fitting groove; 103. Protrusion; 104. Linkage shaft; 105. Limiting ring; 106. Annular groove three; 107. Bevel gear set; 1071. Bevel gear one; 1072. Bevel gear two; 1073. Bevel gear three; 1074. Auxiliary shaft; 108. Protective cover; 109. Extension block; 110. Groove; 11. Annular groove four. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] This invention provides, for example Figure 1-6 The slag and water treatment system for a pulverized coal gasification process shown includes an external support cylinder 1, a bottom plate 2 fixedly connected to the inner wall of the external support cylinder 1, vertical plates 3 fixedly connected to both sides of the top wall of the bottom plate 2, a filter barrel 4 rotatably connected to the top of the vertical plates 3, a stirring shaft 6 rotatably connected to the bottom of the filter barrel 4 via a bushing, stirring blades 7 fixedly connected to the outer wall of the stirring shaft 6, and a motor 9 fixedly connected to the bottom wall of the bottom plate 2. The system also includes:

[0032] The filter bucket 4 has mounting notches 501 on both sides of the top, and the mounting notches 501 are movably connected to the mounting blocks 503 through the crossbars 502. The ends of the mounting blocks 503 match the annular groove 504, which is located inside the outer support cylinder 1 to facilitate the installation of the filter bucket 4 and the outer support cylinder 1.

[0033] The linkage assembly 10 has a drive shaft 101 connected to the output shaft of the motor 9. The upper end of the drive shaft 101 is connected to the lower end of the stirring shaft 6. A linkage shaft 104 is movably fitted on the outer wall of the drive shaft 101. The drive shaft 101 and the linkage shaft 104 are connected by a bevel gear set 107. A protective cover 108 is fitted around the bevel gear set 107. The lower end of the protective cover 108 is fixedly connected to the bottom plate 2. An extension block 109 is fixedly connected to the outer wall of the linkage shaft 104. The end of the extension block 109 is engaged with the slot 110 at the bottom of the filter barrel 4. The rotation of the drive shaft 101 drives the stirring shaft 6 and the filter barrel 4 to rotate synchronously but in different directions, accelerating the drainage.

[0034] The bottom of the filter barrel 4 is provided with an annular groove 11, and the interior of the annular groove 11 is movably connected to the top of the vertical plate 3. The two vertical plates 3 are arc-shaped, and the vertical plates 3 support the filter barrel 4 to ensure the stability of the filter barrel 4 during installation and rotation, and extend the service life of the entire device.

[0035] The two end walls of the crossbar 502 are fixedly connected to the two side walls of the mounting notch 501, and the outer ring of the crossbar 502 is movably fitted with a torsion spring. The two ends of the torsion spring are fixedly connected to the side wall of the mounting notch 501 and the mounting block 503 movably fitted on the outer ring of the crossbar 502, respectively. The force applied by the torsion spring makes the upper end of the mounting block 503 match the annular groove 504 more firmly, ensuring that the filter barrel 4 and the external support cylinder 1 are installed more firmly, avoiding displacement of the filter barrel 4 during use, and making it convenient to remove the filter barrel 4 after moving the mounting block 503.

[0036] The mounting block 503 is shaped like a "7", and the outer wall of the top protrusion of the mounting block 503 is movably connected to the annular groove 504. This allows the mounting block 503 to be moved so that the upper end of the mounting block 503 matches the annular groove 504 without affecting the rotation of the filter barrel 4, thus ensuring the stability of the filter barrel 4 during rotation.

[0037] The lower end of the stirring shaft 6 extends to the bottom of the filter bucket 4, and a protrusion 103 is fixedly connected to the side wall of the lower end of the stirring shaft 6. The outer wall of the lower end of the stirring shaft 6 and the outer wall of the protrusion 103 fixedly connected to the side wall of the stirring shaft 6 match the inner wall of the fitting groove 102 provided at the top of the drive shaft 101. In this way, the stirring shaft 6 can be driven to rotate synchronously when the drive shaft 101 rotates.

[0038] The stirring blade 7 is U-shaped, and two blocks are fixedly connected to the top of the two vertical rods of the stirring blade 7. The outer walls of the two blocks are attached to the inner wall of the annular groove 8 to achieve a movable connection. The annular groove 8 is located inside the filter barrel 4. When the stirring shaft 6 rotates, it drives the stirring blade 7 to rotate, which flips the slag inside the filter barrel 4 to promote the drainage of liquid. When the stirring blade 7 rotates, the two blocks that match the annular groove 8 ensure the stability of the stirring blade 7 during rotation.

[0039] There is a gap between the outer wall of the drive shaft 101 and the inner wall of the through hole of the linkage shaft 104 which is fitted outside the drive shaft 101. The upper end of the linkage shaft 104 extends to the outside of the protective cover 108. The linkage shaft 104 and the through hole at the top of the protective cover 108 are rotatably connected by a bearing, so as to ensure that the drive shaft 101 and the linkage shaft 104 which are connected to the drive shaft 101 through the bevel gear set 107 do not affect each other when they rotate in different directions.

[0040] A limiting ring 105 is fixedly installed on the outer wall of the drive shaft 101, and the outer wall of the limiting ring 105 is attached to the inner wall of the annular groove 106 provided inside the linkage shaft 104 to achieve a rotatable connection, ensuring that the rotatable connection between the drive shaft 101 and the linkage shaft 104 does not fall off, while not affecting the movable connection between the drive shaft 101 and the linkage shaft 104.

[0041] The bevel gear set 107 consists of three meshing bevel gears 1071, 1072 and 1073, and an auxiliary shaft 1074 fitted inside the bevel gear 1073. The end of the auxiliary shaft 1074 is fixedly connected to the inner wall of the protective cover 108. In this way, when the drive shaft 101 rotates, the bevel gear set 107 can drive the linkage shaft 104 to rotate synchronously but in different directions.

[0042] Bevel gear 1071 and bevel gear 1072 are respectively fixedly mounted on the outer ring of drive shaft 101 and linkage shaft 104, and drive linkage shaft 104 to rotate synchronously but in opposite directions when drive shaft 101 rotates.

[0043] Working Principle: When using a slag and water treatment system for a pulverized coal gasification process, the motor 9 is started first, driving the drive shaft 101 connected to the output shaft of the motor 9 to rotate. During the rotation of the drive shaft 101, the stirring shaft 6, which matches the pre-set fitting groove 102 at the top of the drive shaft 101, rotates synchronously. The rotation of the stirring shaft 6, in turn, drives the stirring blades 7, which are fixedly connected to the outer wall of the upper end of the stirring shaft 6, to rotate. The rotation of the stirring blades 7 agitates the slag inside the filter barrel 4, facilitating the faster leakage of liquid inside the filter barrel 4 through the internal leakage holes. At the same time, during the rotation of the drive shaft 101, the transmission of the three meshing bevel gears inside the bevel gear set 107 is also affected. When the drive shaft 101 is in motion, the linkage shaft 104 of the outer ring of the drive shaft 101 rotates, which in turn drives the extension block 109 fixedly connected to the outer wall of the linkage shaft 104 to rotate. The extension block 109 matches the pre-set groove 110 at the bottom of the filter barrel 4, thereby driving the filter barrel 4 to rotate. During the rotation of the filter barrel 4, centrifugal force is used to discharge the liquid inside the filter barrel 4 more quickly. Due to the meshing connection of the gears, the upper and lower bevel gears 1071 and 1072 rotate in opposite directions, that is, the drive shaft 101 and the linkage shaft 104 rotate in opposite directions. This results in two forces acting in opposite directions to cause the liquid inside the filter barrel 4 to be discharged quickly, and the two forces do not interfere with each other, ensuring higher drainage efficiency.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A slag and water treatment system for a pulverized coal gasification process, comprising an external support cylinder (1), characterized in that, The inner wall of the external support cylinder (1) is fixedly connected to a bottom plate (2), and the top walls of the bottom plate (2) are fixedly connected to two vertical plates (3). The top of the vertical plates (3) is rotatably connected to a filter bucket (4). The bottom of the filter bucket (4) is rotatably connected to a stirring shaft (6) via a bushing. The outer wall of the stirring shaft (6) is fixedly connected to a stirring blade (7). The bottom wall of the bottom plate (2) is fixedly connected to a motor (9). The system also includes: The installation assembly (5) has installation notches (501) on both sides of the top of the filter barrel (4), and the installation notches (501) are movably connected to the installation blocks (503) through the crossbar (502), and the end of the installation blocks (503) matches the annular groove (504), which is located inside the outer support cylinder (1). The linkage assembly (10) has a drive shaft (101) connected to the output shaft of the motor (9), and the upper end of the drive shaft (101) is connected to the lower end of the stirring shaft (6). The outer wall of the drive shaft (101) is movably fitted with a linkage shaft (104). The drive shaft (101) and the linkage shaft (104) are connected by a bevel gear set (107). The bevel gear set (107) is fitted with a protective cover (108), and the lower end of the protective cover (108) is fixedly connected to the bottom plate (2). The outer wall of the linkage shaft (104) is fixedly connected with an extension block (109), and the end of the extension block (109) is engaged with the slot (110) at the bottom of the filter bucket (4).

2. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The bottom of the filter barrel (4) is provided with an annular groove four (11), and the interior of the annular groove four (11) is movably connected to the top of the upright plate (3), and the two upright plates (3) are arc-shaped.

3. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The two end walls of the crossbar (502) are fixedly connected to the two side walls of the mounting notch (501), and a torsion spring is movably fitted on the outer ring of the crossbar (502), and the two ends of the torsion spring are fixedly connected to the side wall of the mounting notch (501) and the mounting block (503) movably fitted on the outer ring of the crossbar (502), respectively.

4. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The mounting block (503) is shaped like the number "7", and the outer wall of the top protruding position of the mounting block (503) is matched with the annular groove (504) in a movable connection.

5. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The lower end of the stirring shaft (6) extends to the bottom of the filter bucket (4), and a protrusion (103) is fixedly connected to the side wall of the lower end of the stirring shaft (6). The outer wall of the lower end of the stirring shaft (6) and the outer wall of the protrusion (103) fixedly connected to the side wall of the stirring shaft (6) match the inner wall of the fitting groove (102) provided at the top of the drive shaft (101).

6. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The stirring blade (7) is U-shaped, and two blocks are fixedly connected to the top of the two vertical rods of the stirring blade (7). The outer walls of the two blocks are attached to the inner wall of the annular groove (8) to achieve a movable connection. The annular groove (8) is located inside the filter barrel (4).

7. The slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, There is a gap between the outer wall of the drive shaft (101) and the inner wall of the preset through hole of the linkage shaft (104) which is fitted outside the drive shaft (101), and the upper end of the linkage shaft (104) extends to the outside of the protective cover (108). The linkage shaft (104) and the through hole at the top of the protective cover (108) are rotatably connected by a bearing. A limiting ring (105) is fixedly installed on the outer wall of the drive shaft (101), and the outer wall of the limiting ring (105) is in contact with the inner wall of the annular groove (106) provided inside the linkage shaft (104) to achieve a rotational connection.

8. A slag and water treatment system for a pulverized coal gasification process according to claim 1, characterized in that, The bevel gear set (107) consists of three meshing bevel gears, bevel gear one (1071), bevel gear two (1072) and bevel gear three (1073), and an auxiliary shaft (1074) fitted inside bevel gear three (1073), and the end of the auxiliary shaft (1074) is fixedly connected to the inner wall of the protective cover (108).

9. A slag and water treatment system for a pulverized coal gasification process according to claim 8, characterized in that, The first bevel gear (1071) and the second bevel gear (1072) are respectively fixedly mounted on the outer ring of the drive shaft (101) and the linkage shaft (104).

Images