A gasification fine slag dehydration and drying device and method

Abstract

The present invention discloses a gasification fine slag dehydration and drying device and method, including a concentration module, which is used for sedimentation and concentration of materials; a drying main machine, which is used for dehydration and drying of concentrated materials; a feeding module, which is used for conveying dried materials; a combustion module, which is used for burning materials conveyed by the feeding module; a condensation module, which is used for condensing hot water vapor in the drying main machine; and a recovery module, which is used for recovering waste liquid generated in the drying main machine and the condensation module. The present invention relates to the technical field of gasification fine slag dehydration. In the gasification fine slag dehydration and drying device and method, the hot steam generated in the dehydration process of the dehydration device can be discharged into the condensation module through the exhaust port, and then discharged into the recovery module after being condensed by the condensation module, so as to facilitate the recycling of the waste liquid generated in the drying process.

Description

Technical Field

[0001] The invention relates to the technical field of gasification fine slag dehydration, and in particular to a gasification fine slag dehydration and drying device and method. Background Art

[0002] With the large-scale promotion of coal gasification technology, the stockpile and production of coal gasification slag are increasing, causing serious environmental pollution and waste of land resources, and adversely affecting the sustainable development of coal chemical enterprises. The treatment of coal gasification slag is imminent. At present, water-coal slurry enterprises recycle gasification fine slag. Most of them process it with a vacuum belt filter, and the moisture content of the filter cake is as high as 60% to 70%. It is piled up in the slag yard for natural drying, and then transferred to the park slag yard or entrusted to a third-party enterprise with treatment qualifications for storage and treatment. Most of them adopt a simple landfill treatment method. Only a very small number of enterprises mix a small amount of gasification fine slag into fluidized bed boilers for combustion or mix it into raw coal for sale.

[0003] At present, in the process of processing gasification fine slag, the moisture cannot be fully discharged due to the accumulation of materials, and the waste liquid and steam generated in the drying process cannot be fully utilized. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gasification fine slag dehydration and drying device and method, comprising:

[0005] A concentration module, which is used to concentrate the material by sedimentation;

[0006] Drying host, which is used to dehydrate and dry the concentrated materials;

[0007] A feeding module, which is used to transport the dried materials;

[0008] A combustion module, which is used to burn the materials delivered by the feeding module;

[0009] A condensation module, which is used to condense hot water vapor in the drying host;

[0010] A recovery module, which is used to recover the waste liquid generated in the drying host and the condensation module;

[0011] Among them, the drying main unit includes a treatment cylinder, the top of the treatment cylinder is connected to a water inlet, the inner wall of the treatment cylinder is fixedly connected to a dehydration device, the bottom of the treatment cylinder is connected to a water outlet, the top of the inner wall of the water outlet is fixedly connected to a drainage device, and the part of one side of the treatment cylinder located below the dehydration device is connected to an exhaust port, and a support frame is sleeved and fixedly connected to the bottom of the treatment cylinder. The hot steam generated during the dehydration process of the dehydration device can be discharged into the condensation module through the exhaust port, and then discharged into the recovery module after condensation by the condensation module, so as to facilitate the recycling of the waste liquid generated during the drying process.

[0012] Preferably, the dehydration device includes a dehydration bracket, the top of the dehydration bracket is fixedly connected to a driving motor, the driving shaft of the driving motor passes through the dehydration bracket and is fixedly connected to a telescopic rod, the inner wall of the dehydration bracket below the telescopic rod is rotatably connected to a filter screen, the top edge of the filter screen is sleeved and fixedly connected to a filter screen cylinder, the center position of the filter screen is fixedly connected to a fixing seat, the top of the fixing seat is fixed with a limiting block, the bottom of the telescopic rod is fixedly connected to a stirring rod, and the bottom of the stirring rod is provided with a limiting slot adapted to the limiting block, the material is driven to rotate by the filter screen and the filter screen cylinder, so that the material is centrifugally dehydrated, which can fully remove the moisture on the surface of the material, and it is convenient to remove the moisture on the surface of the material first, and then dry the material, thereby improving the efficiency of material drying.

[0013] Preferably, the dehydration bracket is arranged inside the treatment cylinder and fixedly connected to the inner wall of the treatment cylinder, and the filter screen cylinder is arranged in a funnel shape.

[0014] Preferably, the stirring rod includes a rod body, a toggle rod is fixedly connected to the side of the rod body, and an inclined push plate is fixedly connected to the side of the toggle rod. The toggle rods are provided in multiple groups and are evenly distributed on the rod body, so that the drying device can dry the accumulated internal materials conveniently, so that the drying uniformity is better, and the situation where the water content of the accumulated internal materials is high is avoided.

[0015] Preferably, the top of the rod body is fixedly connected to the bottom of the telescopic rod, and the limiting slot is provided at the bottom of the rod body.

[0016] Preferably, a drying device is sleeved on and fixedly connected to the top of the dehydration bracket, and the drying device includes an annular air cylinder, an air outlet is connected to the bottom of the annular air cylinder, and a fixed tube is connected to the bottom of the air outlet. An extension tube is slidably connected to the inner wall of the fixed tube, the bottom of the extension tube is sealed, and an air outlet is opened on the side of the extension tube. A tension spring is fixedly connected to the top of the extension tube, and one end of the tension spring away from the extension tube is fixedly connected to the inner wall of the annular air cylinder. A hot air blower is connected to the side of the annular air cylinder through an air duct to avoid drying dead corners, achieve better drying effects, and achieve higher material drying uniformity. At the same time, when the centrifugal dehydration is cut off, the extension tube is not affected by wind force and can be retracted into the fixed tube to avoid the situation where centrifugal water enters the extension tube and is discharged together with the drying hot air.

[0017] Preferably, the annular air cylinder is arranged on the dehydration bracket and fixedly connected to the dehydration bracket, and the hot air blower is arranged outside the processing cylinder and fixedly connected to the outer wall of the processing cylinder.

[0018] Preferably, the drainage device includes a cover shell, a drainage hole is opened on the side of the cover shell, a water-blocking bracket is slidably connected to the outer side of the cover shell, a float is fixedly connected to the top of the water-blocking bracket, an arc spring is fixedly connected to the side of the water-blocking bracket, and a sealing ring is fixedly connected to the bottom of the water-blocking bracket, so that the opening and closing of the drainage device can be automatically controlled according to drainage needs, without manual and electric control operations, and it is easy to use and not easy to damage.

[0019] Preferably, the cover shell is arranged in the part above the water outlet inside the treatment tube and is fixedly connected to the inner wall of the treatment tube, and one end of the arc spring away from the water blocking bracket is fixedly connected to the inner wall of the treatment tube.

[0020] A method for dehydrating and drying gasified fine slag comprises the following steps:

[0021] S1, putting the material into the sedimentation tank in the concentration module and adding medicine for concentration;

[0022] S2, the concentrated material is directly sent into the drying host for drying through the feed pump;

[0023] S3, the hot water vapor generated during the drying process is condensed through a condensation module;

[0024] S4. The waste liquid in the drying process and the condensed water after condensation are recovered by the recovery module and then pumped back to the gasification device through the return pipe for recycling;

[0025] S5. After dehydration and drying, it is mixed with fuel coal and sent to the combustion module for combustion.

[0026] The invention provides a gasification fine slag dehydration and drying device and method.

[0027] It has the following beneficial effects:

[0028] (1) The gasification fine slag dehydration and drying equipment and method provided by the present invention, when in use, the material after being concentrated by the concentration module enters the interior of the treatment cylinder through the water inlet, and is first dehydrated by the dehydration device inside the treatment cylinder. The dehydrated water can be discharged into the interior of the recovery module through the water outlet, and the hot steam generated during the dehydration process of the dehydration device can be discharged into the interior of the condensation module through the exhaust port, and then discharged into the recovery module after condensation by the condensation module, so as to facilitate the recycling of the waste liquid generated during the drying process.

[0029] (2) The gasification fine slag dehydration and drying equipment and method provided by the present invention are provided with a dehydration device. After the material enters the interior of the treatment cylinder, it falls on the filter net inside the dehydration device. After being filtered by the filter net, the solid material remains on the filter net, and the waste liquid falls on the bottom of the treatment cylinder through the filter net. After filtering and sinking, the telescopic rod and the stirring rod are driven by a driving motor to rotate. The stirring rod drives the fixed seat to rotate through the cooperation of the limit slot and the limit block. The fixed seat drives the filter net and the filter net cylinder to rotate. The material is driven to rotate through the filter net and the filter net cylinder, so that the material is centrifugally dehydrated, which can fully remove the moisture on the surface of the material. It is convenient to remove the moisture on the surface of the material first, and then dry the material, thereby improving the efficiency of material drying.

[0030] (3) The gasification fine slag dehydration and drying equipment and method provided by the present invention, when drying is required, the stirring rod is driven to rise by the telescopic rod, and the rod body inside the stirring rod drives the limit slot to rise, so that the limit slot and the limit block are disengaged. At this time, when the driving motor drives the telescopic rod to rotate, the telescopic rod drives the rod body to rotate, and the rod body can drive the toggle rod and the inclined push plate to stir the material accumulated on the filter screen, so that the drying device can dry the accumulated internal material, so that the drying uniformity is better, and the situation that the water content of the material accumulated inside is high is avoided.

[0031] (4) The gasification fine slag dehydration and drying equipment and method provided by the present invention are provided with a drying device. When in use, hot air is sent into the interior of the annular wind tube through a hot air blower. The hot air inside the annular wind tube enters the fixed tube and the extension tube through the air outlet. The wind force pushes the extension tube to slide out from the interior of the fixed tube, and the air outlet slides out together with the extension tube. At this time, the hot air can be discharged from the inside of the air outlet, so that the hot air can dry the material inside the filter mesh cylinder from the side of the filter mesh cylinder. Since there are multiple groups of fixed tubes and extension tubes, the material inside the filter mesh cylinder can be dried from multiple angles to avoid the generation of drying dead corners. The drying effect is better and the material drying uniformity is higher. At the same time, when the centrifugal dehydration is cut off, the extension tube is not affected by the wind force and can be retracted into the fixed tube to avoid the situation where the centrifugal water enters the extension tube and is discharged together with the drying hot air.

[0032] (5) The gasification fine slag dehydration and drying equipment and method provided by the present invention are provided with a drainage device. When the water in the dehydration device falls and accumulates inside the treatment tube, the accumulated water drives the float to rise through buoyancy, and the float drives the water-blocking bracket to rise, and the water-blocking bracket drives the sealing ring to rise. At this time, the sealing ring is detached from the side of the drainage hole, and the water inside the treatment tube can be discharged from the drainage hole. When the water inside the treatment tube, the float and the water-blocking bracket fall under the action of gravity, driving the sealing ring to block the drainage hole again, at this time, hot air can be prevented from being discharged from the drainage device during drying, and the opening and closing of the drainage device can be automatically controlled according to drainage needs, without manual and electric control operations, and it is easy to use and not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the gasification fine slag dehydration and drying equipment of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the treatment tube of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the dehydration device of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal structure of the dehydration device of the present invention;

[0037] Figure 5 This is a schematic diagram of the connection structure of the stirring rod of the present invention;

[0038] Figure 6 It is a structural schematic diagram of the drying device of the present invention;

[0039] Figure 7 This is a schematic diagram of the internal structure of the drying device of the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the drainage device of the present invention;

[0041] Fig. 9 It is a schematic diagram of the internal structure of the drainage device of the present invention;

[0042] Fig.10 It is a schematic diagram of the process of the gasification fine slag dehydration and drying method of the present invention.

[0043] In the figure: 1. treatment cylinder; 2. water inlet; 3. dehydration device; 31. dehydration bracket; 32. driving motor; 33. telescopic rod; 34. filter screen; 35. filter screen cylinder; 36. fixing seat; 37. limit block; 38. stirring rod; 381. rod body; 382. toggle rod; 383. inclined push plate; 39. drying device; 391. annular air cylinder; 392. air outlet; 393. fixing pipe; 394. extension pipe; 395. air outlet; 396. tension spring; 397. hot air blower; 4. water outlet; 5. drainage device; 51. cover shell; 52. drainage hole; 53. water blocking bracket; 54. float; 55. arc spring; 56. sealing ring; 6. exhaust port; 7. support frame. DETAILED DESCRIPTION

[0044] See also Figure 1-Figure 2 , the present invention provides a technical solution:

[0045] A gasification fine slag dehydration and drying device, comprising

[0046] A concentration module, which is used to concentrate the material by sedimentation;

[0047] Drying host, which is used to dehydrate and dry the concentrated materials;

[0048] A feeding module, which is used to transport the dried materials;

[0049] A combustion module, which is used to burn the materials delivered by the feeding module;

[0050] A condensation module, which is used to condense hot water vapor in the drying host;

[0051] A recovery module, which is used to recover the waste liquid generated in the drying host and the condensation module;

[0052] Among them, the drying main unit includes a processing cylinder 1, the top of the processing cylinder 1 is connected to a water inlet 2, the inner wall of the processing cylinder 1 is fixedly connected to a dehydration device 3, the bottom of the processing cylinder 1 is connected to a water outlet 4, the top of the inner wall of the water outlet 4 is fixedly connected to a drainage device 5, the part of one side of the processing cylinder 1 located below the dehydration device 3 is connected to an exhaust port 6, and the bottom of the processing cylinder 1 is sleeved and fixedly connected to a support frame 7.

[0053] When in use, the material concentrated by the concentration module enters the treatment cylinder 1 through the water inlet 2, and is first dehydrated by the dehydration device 3 inside the treatment cylinder 1. The dehydrated water can be discharged into the recovery module through the water outlet 4, and the hot steam generated during the dehydration process of the dehydration device 3 can be discharged into the condensation module through the exhaust port, and then discharged into the recovery module after condensation by the condensation module, so as to facilitate the recycling of the waste liquid generated during the drying process.

[0054] See also Figure 1-Figure 5 The present invention provides a technical solution: the dehydration device 3 includes a dehydration bracket 31, the top of the dehydration bracket 31 is fixedly connected to a driving motor 32, the driving shaft of the driving motor 32 passes through the dehydration bracket 31 and is fixedly connected to a telescopic rod 33, the inner wall of the dehydration bracket 31 located below the telescopic rod 33 is rotatably connected to a filter screen 34, the top edge of the filter screen 34 is sleeved and fixedly connected to a filter screen cylinder 35, the center position of the filter screen 34 is fixedly connected to a fixing seat 36, the top of the fixing seat 36 is fixed with a limiting block 37, the bottom of the telescopic rod 33 is fixedly connected to a stirring rod 38, and the bottom of the stirring rod 38 is provided with a limiting slot adapted to the limiting block 37, the dehydration bracket 31 is arranged inside the processing tube 1 and is fixedly connected to the inner wall of the processing tube 1, the filter screen cylinder 35 is arranged in a funnel shape, the top of the dehydration bracket 31 A drying device 39 is sleeved and fixedly connected, and a dehydrating device 3 is provided. After the material enters the processing cylinder 1, it falls on the filter screen 34 inside the dehydrating device 3. After being filtered by the filter screen 34, the solid material remains on the filter screen 34, and the waste liquid falls on the bottom of the processing cylinder 1 through the filter screen 34. After filtering and sinking, the telescopic rod 33 and the stirring rod 38 are driven to rotate by the driving motor 32. The stirring rod 38 drives the fixed seat 36 to rotate through the cooperation of the limit card slot and the limit card block 37. The fixed seat 36 drives the filter screen 34 and the filter screen cylinder 35 to rotate. The material is driven to rotate through the filter screen 34 and the filter screen cylinder 35, so that the material is centrifugally dehydrated, which can fully remove the moisture on the surface of the material, and it is convenient to remove the moisture on the surface of the material first, and then dry the material, thereby improving the efficiency of material drying;

[0055] The stirring rod 38 includes a rod body 381, a toggle rod 382 is fixedly connected to the side of the rod body 381, and an inclined push plate 383 is fixedly connected to the side of the toggle rod 382. The toggle rod 382 is provided with multiple groups and is evenly distributed on the rod body 381. The top of the rod body 381 is fixedly connected to the bottom of the telescopic rod 33, and a limit slot is provided at the bottom of the rod body 381. When drying is required, the stirring rod 38 is driven to rise by the telescopic rod 33, and the rod body 381 inside the stirring rod 38 drives the limit slot to rise, so that the limit slot is disengaged from the limit block 37. At this time, when the driving motor 32 drives the telescopic rod 33 to rotate, the telescopic rod 33 drives the rod body 381 to rotate, and the toggle rod 382 and the inclined push plate 383 can be driven by the rod body 381 to stir the material accumulated on the filter screen 34, so that the drying device 39 can dry the accumulated internal material, so that the drying uniformity is better, and the situation that the water content of the material accumulated inside is large is avoided.

[0056] See also Figure 1-Figure 7The present invention provides a technical solution: a drying device 39 comprises an annular wind tube 391, an air outlet 392 is connected to the bottom of the annular wind tube 391, a fixed pipe 393 is connected to the bottom of the air outlet 392, an extension pipe 394 is slidably connected to the inner wall of the fixed pipe 393, the bottom of the extension pipe 394 is sealed, an air outlet 395 is provided on the side of the extension pipe 394, a tension spring 396 is fixedly connected to the top of the extension pipe 394, one end of the tension spring 396 away from the extension pipe 394 is fixedly connected to the inner wall of the annular wind tube 391, a hot air blower 397 is connected to the side of the annular wind tube 391 through an air duct, the annular wind tube 391 is arranged on the dehydration bracket 31 and is fixedly connected to the dehydration bracket 31, the hot air blower 397 is arranged outside the processing tube 1 and is fixedly connected to the outer wall of the processing tube 1, and a drying device 39 is provided, and hot air is sent into the annular wind tube through the hot air blower 397 when in use Inside the wind tube 391, the hot air inside the annular wind tube 391 enters the fixed tube 393 and the extension tube 394 through the air outlet nozzle 392, and the wind force pushes the extension tube 394 to slide out from the fixed tube 393, and the air outlet 395 slides out together with the extension tube 394. At this time, the hot air can be discharged from the air outlet 395, so that the hot air can dry the material inside the filter mesh cylinder 35 from the side of the filter mesh cylinder 35. Since there are multiple groups of fixed tubes 393 and extension tubes 394, the material inside the filter mesh cylinder 35 can be dried from multiple angles to avoid drying dead corners, with better drying effect and higher material drying uniformity. At the same time, when the centrifugal dehydration is cut off, the extension tube 394 is not affected by the wind force and can be retracted into the fixed tube 393 to avoid the situation where the centrifugal water enters the extension tube 394 and is discharged together with the drying hot air.

[0057] See also Figure 1-Figure 9The present invention provides a technical solution: the drainage device 5 includes a cover shell 51, a drainage hole 52 is opened on the side of the cover shell 51, a water blocking bracket 53 is slidably connected to the outer side of the cover shell 51, a float 54 is fixedly connected to the top of the water blocking bracket 53, an arc spring 55 is fixedly connected to the side of the water blocking bracket 53, and a sealing ring 56 is fixedly connected to the bottom of the water blocking bracket 53. The cover shell 51 is arranged in the part above the water outlet 4 inside the treatment tube 1 and is fixedly connected to the inner wall of the treatment tube 1. One end of the arc spring 55 away from the water blocking bracket 53 is fixedly connected to the inner wall of the treatment tube 1. The drainage device 5 is provided. When the water in the dehydration device 3 falls and accumulates in the treatment tube 1, the water in the dehydration device 3 is discharged. When the inside of the cylinder 1 is being treated, the accumulated water drives the float 54 to rise through the buoyancy, and the float 54 drives the water-blocking bracket 53 to rise, and the water-blocking bracket 53 drives the sealing ring 56 to rise. At this time, the sealing ring 56 is detached from the side of the drainage hole 52, and the water inside the treatment cylinder 1 can be discharged from the drainage hole 52. When the water inside the treatment cylinder 1, the float 54 and the water-blocking bracket 53 descend under the action of gravity, driving the sealing ring 56 to block the drainage hole 52 again, and at this time, the hot air can be prevented from being discharged from the drainage device 5 during drying, so that the opening and closing of the drainage device 5 can be automatically controlled according to the drainage needs, without manual and electric control operations, and it is easy to use and not easy to damage.

[0058] See also Fig.10 The present invention provides a method for dehydrating and drying gasified fine slag, comprising the following steps:

[0059] S1, putting the material into the sedimentation tank in the concentration module and adding medicine for concentration;

[0060] S2, the concentrated material is directly sent into the drying host for drying through the feed pump;

[0061] S3, the hot water vapor generated during the drying process is condensed through a condensation module;

[0062] S4. The waste liquid in the drying process and the condensed water after condensation are recovered by the recovery module and then pumped back to the gasification device through the return pipe for recycling;

[0063] S5. After dehydration and drying, it is mixed with fuel coal and sent to the combustion module for combustion.

[0064] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A gasification fine slag dehydration and drying equipment, Features: include A concentration module, which is used to concentrate the material by sedimentation; Drying host, which is used to dehydrate and dry the concentrated materials; A feeding module, which is used to transport the dried materials; A combustion module, which is used to burn the materials delivered by the feeding module; A condensation module, which is used to condense hot water vapor in the drying host; A recovery module, which is used to recover the waste liquid generated in the drying host and the condensation module; The drying main unit comprises a treatment cylinder (1), the top of the treatment cylinder (1) is connected to a water inlet (2), the inner wall of the treatment cylinder (1) is fixedly connected to a dehydration device (3), the bottom of the treatment cylinder (1) is connected to a water outlet (4), the top of the inner wall of the water outlet (4) is fixedly connected to a drainage device (5), a part of one side of the treatment cylinder (1) located below the dehydration device (3) is connected to an exhaust port (6), and a support frame (7) is sleeved and fixedly connected to the bottom of the treatment cylinder (1); The dehydration device (3) comprises a dehydration bracket (31), the top of the dehydration bracket (31) is fixedly connected to a driving motor (32), the driving shaft of the driving motor (32) passes through the dehydration bracket (31) and is fixedly connected to a telescopic rod (33), the inner wall of the dehydration bracket (31) located below the telescopic rod (33) is rotatably connected to a filter screen (34), the top edge of the filter screen (34) is sleeved with and fixedly connected to a filter screen cylinder (35), the center of the filter screen (34) is fixedly connected to a fixing seat (36), the top of the fixing seat (36) is fixed with a limiting block (37), and the bottom of the telescopic rod (33) is fixedly connected to a stirring rod (38); A drying device (39) is sleeved on and fixedly connected to the top of the dehydration bracket (31), and the drying device (39) comprises an annular wind tube (391), the bottom of the annular wind tube (391) is connected to an air outlet (392), the bottom of the air outlet (392) is connected to a fixed pipe (393), the inner wall of the fixed pipe (393) is slidably connected to an extension pipe (394), the side of the extension pipe (394) is provided with an air outlet (395), the top of the extension pipe (394) is fixedly connected to a tension spring (396), and the side of the annular wind tube (391) is connected to a hot air blower (397) through an air duct.

2. The gasification fine slag dehydration and drying equipment according to claim 1, Features: The bottom of the stirring rod (38) is provided with a limit slot matched with the limit block (37).

3. The gasification fine slag dehydration and drying equipment according to claim 2, Features: The dehydration support (31) is arranged inside the treatment cylinder (1) and is fixedly connected to the inner wall of the treatment cylinder (1); the filter screen cylinder (35) is arranged in a funnel shape.

4. The gasification fine slag dehydration and drying equipment according to claim 2, Features: The stirring rod (38) comprises a rod body (381), a toggle rod (382) is fixedly connected to the side of the rod body (381), an inclined push plate (383) is fixedly connected to the side of the toggle rod (382), and a plurality of groups of the toggle rods (382) are arranged and evenly distributed on the rod body (381).

5. The gasification fine slag dehydration and drying equipment according to claim 4, Features: The top of the rod body (381) is fixedly connected to the bottom of the telescopic rod (33), and the limit slot is provided at the bottom of the rod body (381).

6. The gasification fine slag dehydration and drying equipment according to claim 2, Features: The bottom of the extension tube (394) is sealed, and one end of the tension spring (396) away from the extension tube (394) is fixedly connected to the inner wall of the annular air cylinder (391).

7. The gasification fine slag dehydration and drying equipment according to claim 6, Features: The annular wind tube (391) is arranged on the dehydration bracket (31) and is fixedly connected to the dehydration bracket (31); the hot air blower (397) is arranged outside the processing tube (1) and is fixedly connected to the outer wall of the processing tube (1).

8. The gasification fine slag dehydration and drying equipment according to claim 2, Features: The drainage device (5) comprises a cover shell (51), a drainage hole (52) is provided on the side of the cover shell (51), a water blocking bracket (53) is slidably connected to the outside of the cover shell (51), a float (54) is fixedly connected to the top of the water blocking bracket (53), an arc spring (55) is fixedly connected to the side of the water blocking bracket (53), and a sealing ring (56) is fixedly connected to the bottom of the water blocking bracket (53).

9. The gasification fine slag dehydration and drying equipment according to claim 8, Features: The cover shell (51) is arranged in the part above the water outlet (4) inside the treatment tube (1) and is fixedly connected to the inner wall of the treatment tube (1); and one end of the arc spring (55) away from the water blocking bracket (53) is fixedly connected to the inner wall of the treatment tube (1).

10. A method based on the gasification fine slag dehydration and drying equipment according to claim 1, Features: The following steps are involved: S1, placing the material into the sedimentation tank in the concentration module and adding medicine for concentration; S2, the concentrated material is directly sent into the drying host for drying through the feed pump; S3, the hot water vapor generated during the drying process is condensed through a condensation module; S4. The waste liquid in the drying process and the condensed water after condensation are recovered by the recovery module and then pumped back to the gasification device through the return pipe for recycling; S5. After dehydration and drying, it is mixed with fuel coal and sent to the combustion module for combustion.

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