An ultra-supercritical power station boiler flue gas waste heat drying coal sludge device

Abstract

The invention discloses a device for drying coal slime by using waste heat of flue gas from an ultra-supercritical power station boiler, comprising a box body, a processing assembly is installed inside the box body, the processing assembly comprises a shell body, the shell body is installed inside the box body, a pressurizing assembly is installed on one side of the shell body, a bottom plate is slidably connected inside the shell body, a heating pipe is installed inside the shell body, the heating pipe is located below the bottom plate, electric valves are evenly installed on the top of the bottom plate, a filter is installed on the top of the electric valve, one side of the shell body is connected to two feeding pipes, the two feeding pipes extend to the outside of the box body away from one side of the shell body, one side of the box body is connected to an air intake pipe, an exhaust grille is installed on the top of the box body; a cleaning assembly is installed on the top of the bottom plate, the device solves the problems of low drying efficiency and coal slime adhesion, and achieves the effects of high efficiency and prevention of coal slime adhesion.

Description

Technical Field

[0001] The invention relates to the technical field of coal slime drying, and more specifically, to a device for drying coal slime by utilizing waste heat of flue gas from an ultra-supercritical power station boiler. Background Art

[0002] Ultra-supercritical coal-fired power generation technology is an advanced and efficient power generation technology. It has higher thermal efficiency than supercritical units and has more obvious advantages over conventional coal-fired power generation units. With the continuous development of industrial technology, the remaining coal slime has been well utilized for secondary use. The new technology of crushing and dispersing the coal slime and then thermally drying it has made the treatment of coal slime continuous, industrialized, and automated. The dried coal slime can be used in ultra-supercritical power station boilers.

[0003] The existing device flattens the coal slime by means of a toggle rack, but the water content in the coal slime varies. The coal slime is dried only by continuously toggling the toggle rack in conjunction with flue gas. This method has a low drying efficiency, and part of the coal slime will adhere to the toggle rack. After drying, the dried coal slime will solidify, making it difficult to flatten the coal slime. More or less coal slime will accumulate in some locations, thus affecting the drying efficiency of the coal slime. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a device for drying coal slime using waste heat from flue gas of an ultra-supercritical power station boiler.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for drying coal slime using waste heat from flue gas of an ultra-supercritical power station boiler, comprising a box body, a processing assembly is installed inside the box body, the processing assembly comprises a shell, the shell is installed inside the box body, a pressurizing assembly is installed on one side of the shell body, a bottom plate is slidably connected inside the shell body, a heating pipe is installed inside the shell body, the heating pipe is located below the bottom plate, electric valves are evenly installed on the top of the bottom plate, a filter is installed on the top of the electric valve, one side of the shell body is connected to two feed pipes, the two feed pipes extend to the outside of the box body away from one side of the shell body, one side of the box body is connected to an air intake pipe, and an exhaust grille is installed on the top of the box body;

[0006] A cleaning assembly is installed on the top of the base plate, and the cleaning assembly includes an activated carbon filter plate, which is slidably connected to the interior of the shell. A limiting assembly is provided on the inner wall of the shell, and the side walls of the activated carbon filter plate and the base plate are both connected to the limiting assembly.

[0007] The present invention is further configured as follows: a condenser is installed on the top of the activated carbon filter plate.

[0008] The present invention is further configured as follows: the pressurizing assembly includes a fixing seat, the fixing seat is hinged to one side of the shell, and a plate body is installed inside the fixing seat.

[0009] The present invention is further configured as follows: a cylinder is provided on one side of the shell close to the fixed seat, the outer shell of the cylinder is hinged to the side wall of the shell, the piston rod of the cylinder is hinged to the top of the fixed seat, and a locking bolt is threadedly connected to one side of the fixed seat, and one end of the locking bolt extends to the interior of the fixed seat and fits against one side of the plate body.

[0010] The present invention is further configured as follows: the bottom of the activated carbon filter plate is fixedly connected to two fixed blocks, the bottoms of the two fixed blocks are each equipped with an electric push rod, the outer shell of the electric push rod is hinged to the bottom of the fixed block, the piston rod of the electric push rod is hinged to a scraper, and the bottom of the scraper is attached to the top of the base plate.

[0011] The present invention is further configured as follows: a conductive rod is arranged inside the box, the top of the conductive rod passes through the bottom plate and the bottom of the activated carbon filter plate, a delay switch is installed on the inner top wall of the box, and the conductive rod corresponds to the delay switch.

[0012] The present invention is further configured as follows: a first compression spring is sleeved on the outer wall of the conductive rod, the bottom of the first compression spring is fixedly connected to the top of the activated carbon filter plate, and the top of the first compression spring is fixedly connected to the top of the conductive rod.

[0013] The present invention is further configured as follows: the limit assembly includes a slide groove, the slide grooves are symmetrically arranged, and the two slide grooves are opened on the inner wall of the shell, the interior of the two slide grooves are slidably connected with a first slider and a second slider, the first slider is connected to one side of the bottom plate, the second slider is connected to one side of the activated carbon filter plate, and a second compression spring is connected between the first slider and the second slider.

[0014] The present invention is further configured as follows: a door body is hingedly connected to the front surface of the box body, and a sealing gasket is installed on one side of the door body.

[0015] The advantages of the present invention are:

[0016] (1) By setting the plate body, the cylinder pushes the fixed seat to change its angle, causing the plate body to swing back and forth at the bottom of the shell, thereby causing the boiler flue gas in the box to flow and continuously push the boiler flue gas toward the shell for pressure, causing the activated carbon filter plate and the plate body to continuously squeeze the boiler flue gas pushed into the shell, slowing down the flow rate of the boiler flue gas at the top of the bottom plate, thereby accelerating the drying efficiency of the coal slime.

[0017] (2) The piston rod of the cylinder continuously extends and retracts, causing the fixed block and the plate body to swing continuously, and the conductive rod is continuously squeezed and moved up and down. The delay switch is continuously triggered, causing the piston rod of the electric push rod to continuously extend and retract, and the scraper continuously slides back and forth on the top of the bottom plate to scrape off the adhered coal slime. When the two scrapers approach each other, they collide, thereby shaking off the coal slime adhered to the scraper and avoiding the adhesion of the coal slime. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a side view structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the shell in the present invention;

[0021] Figure 4 for Figure 2 Sectional view cut along the AA direction;

[0022] Figure 5 for Figure 2 Sectional view cut along the BB direction;

[0023] Figure 6 It is a schematic diagram of the structure of the pressurizing component of the present invention;

[0024] Figure 7 It is a schematic diagram of the horizontal state structure of the plate body of the present invention;

[0025] In the figure: 1. box body; 2. door body; 3. sealing gasket; 4. processing component; 41. shell; 42. exhaust grille; 43. intake pipe; 44. condenser; 45. bottom plate; 46. feed pipe; 47. heating pipe; 48. electric valve; 49. filter; 5. pressurizing component; 51. cylinder; 52. fixing seat; 53. locking bolt; 54. plate body; 6. cleaning component; 61. activated carbon filter plate; 62. fixing block; 63. electric push rod; 64. delay switch; 65. first compression spring; 66. conductive rod; 67. scraper; 7. limit component; 71. slide groove; 72. first slider; 73. second compression spring; 74. second slider. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-7 The present invention provides the following technical solutions: an ultra-supercritical power station boiler flue gas waste heat drying coal slime device, comprising a box body 1, a door body 2 is hingedly connected to the front surface of the box body 1, a sealing gasket 3 is installed on one side of the door body 2, the door body 2 is used to close or open the box body 1, so as to facilitate the staff to inspect and install the parts inside the box body 1, and the sealing gasket 3 is used to fill the gap between the door body 2 and the box body 1, so as to avoid gas leakage inside the box body 1;

[0030] A processing assembly 4 is installed inside the box 1. The processing assembly 4 includes a shell 41. The shell 41 is installed inside the box 1. One side of the shell 41 is connected to two feed pipes 46. The inside of the shell 41 is slidably connected to a bottom plate 45. The two feed pipes 46 extend to the outside of the box 1 away from one side of the shell 41. The two feed pipes 46 are used to discharge the coal slime to the top of the bottom plate 45 for accumulation. One side of the box 1 is connected to an air intake pipe 43. The air intake pipe 43 is used to discharge the boiler flue gas into the box 1.

[0031] Electric valves 48 are evenly installed on the top of the bottom plate 45, and a filter screen 49 is installed on the top of the electric valve 48. The bottom plate 45 is used to carry the coal slime, and the electric valve 48 is used to discharge the dried coal slime downward. A heating pipe 47 is installed inside the shell 41. The heating pipe 47 is located below the bottom plate 45. The heating pipe 47 is used to heat the boiler flue gas inside the box body 1 again, so that the boiler flue gas flows upward through the filter screen 49 and contacts the coal slime.

[0032] A cleaning assembly 6 is installed on the top of the bottom plate 45. The cleaning assembly 6 includes an activated carbon filter plate 61. The activated carbon filter plate 61 is slidably connected to the inside of the housing 41. A condenser 44 is installed on the top of the activated carbon filter plate 61. An exhaust grille 42 is installed on the top of the box body 1. The boiler flue gas dries the coal slime and is filtered through the activated carbon filter plate 61 and discharged through the exhaust grille 42. The condenser 44 is used to absorb and condense the water evaporated from the coal slime.

[0033] The inner wall of the shell 41 is provided with a limit assembly 7, which includes a slide groove 71, which is symmetrically arranged, and the two slide grooves 71 are both opened on the inner wall of the shell 41, and the insides of the two slide grooves 71 are slidably connected with a first slider 72 and a second slider 74, the first slider 72 is connected to one side of the bottom plate 45, and the second slider 74 is connected to one side of the activated carbon filter plate 61, and a second compression spring 73 is connected between the first slider 72 and the second slider 74, and the second compression spring 73 is used to support the second slider 74, and a gap is generated between the first slider 72 and the second slider 74, so that a gap is generated between the bottom plate 45 and the activated carbon filter plate 61, and the coal slime is discharged into the gap;

[0034] The bottom of the activated carbon filter plate 61 is fixedly connected to two fixed blocks 62, and the bottom of the two fixed blocks 62 is installed with an electric push rod 63. The shell of the electric push rod 63 is hinged to the bottom of the fixed block 62. The piston rod of the electric push rod 63 is hinged with a scraper 67. The bottom of the scraper 67 is attached to the top of the bottom plate 45. The electric push rod 63 is used to push the scraper 67 to slide on the top of the bottom plate 45, so as to clean the coal slime adhered to the top of the bottom plate 45. The first slider 72 and the bottom plate 45 are affected by the slide groove 71. The sound remains stationary. As the piston rod of the electric push rod 63 continues to grow, the shell of the activated carbon filter plate 61 drives the fixed block 62, the activated carbon filter plate 61 and the second slider 74 to move upward. The sliding stroke of the second slider 74 is limited by the slide groove 71, so that the upward movement distance of the activated carbon filter plate 61 is limited. If the piston rod of the electric push rod 63 continues to extend and retract, the activated carbon filter plate 61 continues to move up and down, thereby squeezing the boiler flue gas and coal slime in the gap between the bottom plate 45 and the activated carbon filter plate 61.

[0035] A pressurizing assembly 5 is installed on one side of the housing 41. The pressurizing assembly 5 includes a fixing seat 52. The fixing seat 52 is hinged to one side of the housing 41. A plate 54 is installed inside the fixing seat 52.

[0036] A cylinder 51 is provided on one side of the housing 41 close to the fixing seat 52. The outer shell of the cylinder 51 is hinged to the side wall of the housing 41. The piston rod of the cylinder 51 is hinged to the top of the fixing seat 52. A locking bolt 53 is threadedly connected to one side of the fixing seat 52. One end of the locking bolt 53 extends to the inside of the fixing seat 52 and fits to one side of the plate 54. The cylinder 51 is used to push the fixing seat 52 to change its angle. When the fixing seat 52 swings, it drives the plate 54 to swing synchronously, causing the plate 54 to swing back and forth at the bottom of the housing 41, so that the boiler flue gas in the box body 1 flows, and the boiler flue gas is continuously pushed toward the housing 41 for pressurization, so that the activated carbon filter plate 61 and the boiler flue gas pushed into the housing 41 by the plate 54 are continuously squeezed, thereby accelerating the drying efficiency of the coal slime;

[0037] A conductive rod 66 is provided inside the box body 1, and the top of the conductive rod 66 passes through the bottom plate 45 and the bottom of the activated carbon filter plate 61. The outer wall of the conductive rod 66 is sleeved with a first compression spring 65, and the bottom of the first compression spring 65 is fixedly connected to the top of the activated carbon filter plate 61, and the top of the first compression spring 65 is fixedly connected to the top of the conductive rod 66. When the plate body 54 swings to a horizontal state with the bottom surface of the shell 41, the plate body 54 pushes the conductive rod 66, the activated carbon filter plate 61 and the first compression spring 65 to move upward as a whole. A delay switch 64 is installed on the inner top wall of the box body 1, and the conductive rod 66 corresponds to the delay switch 64. When the conductive rod 66 moves upward, the top of the conductive rod 66 will fit with the delay switch 64. The delay switch 64 is used to control the start of the electric push rod 63, and the electric push rod 63 performs a telescopic movement.

[0038] Example

[0039] Specifically, the staff discharges the coal slime to the top of the bottom plate 45 through the two feeding pipes 46 for accumulation. The bottom plate 45 is used to bear the coal slime. The second compression spring 73 is used to support the second slider 74. A gap is formed between the first slider 72 and the second slider 74, so that a gap is formed between the bottom plate 45 and the activated carbon filter plate 61, and the coal slime is discharged into the gap. The boiler flue gas pipeline is connected with the air intake pipe 43, and the boiler flue gas is continuously discharged into the inside of the box body 1 through the air intake pipe 43. The heating pipe 47 is used to heat the boiler flue gas inside the box body 1 again, so that the boiler flue gas flows upward through the filter screen 49. The boiler flue gas heats the coal slime, causing the water in the coal slime to evaporate continuously to generate steam and flow upward. The boiler flue gas dries the coal slime and is filtered through the activated carbon filter plate 61 and discharged through the exhaust grille 42. The condenser 44 is used to absorb the water evaporated from the coal slime and perform steam condensation. The staff controls the electric valve 48 to open, causing the evaporated coal slime to be discharged downward through the electric valve 48 to accumulate in the box 1. During the falling process, the coal slime is heated, dehydrated and dried again by the boiler flue gas in the box 1, thereby ensuring the drying effect of the coal slime.

[0040] When the moisture content in the coal slime is high and the drying efficiency is low, the staff presses the switch to start the control cylinder 51, and the cylinder 51 is used to push the fixing seat 52 to change its angle. When the fixing seat 52 swings, it drives the plate body 54 to swing synchronously, so that the plate body 54 swings back and forth at the bottom of the shell 41, so that the boiler flue gas in the box body 1 flows, and the boiler flue gas is continuously pushed toward the shell 41 for pressurization, so that the activated carbon filter plate 61 and the boiler flue gas pushed into the shell 41 by the plate body 54 are continuously squeezed, thereby accelerating the drying efficiency of the coal slime;

[0041] When the plate body 54 swings to a state that is horizontal with the bottom surface of the housing 41, the plate body 54 pushes the conductive rod 66, the activated carbon filter plate 61 and the first compression spring 65 to move upward as a whole, and a delay switch 64 is installed on the inner top wall of the box body 1. The conductive rod 66 corresponds to the delay switch 64. When the conductive rod 66 moves upward, the top of the conductive rod 66 will fit with the delay switch 64. The delay switch 64 is used to control the start of the electric push rod 63, and the electric push rod 63 performs a telescopic movement;

[0042] When the piston rod of the electric push rod 63 is extended, the housing of the electric push rod 63 drives the fixed block 62, the activated carbon filter plate 61 and the second slider 74 to move upward, and the sliding stroke of the second slider 74 is limited by the slide groove 71, so that the upward movement distance of the activated carbon filter plate 61 is limited. When the second slider 74 slides to the top of the slide groove 71, the housing of the electric push rod 63 stops moving upward. At this time, the piston rod of the electric push rod 63 continues to extend, causing the scraper 67 to slide on the top of the bottom plate 45, thereby turning over and cleaning the coal slime adhered to the top of the bottom plate 45;

[0043] When the piston rod of the electric push rod 63 contracts, the activated carbon filter plate 61 is affected by gravity and drives the conductive rod 66 to move downward, so that the conductive rod 66 is separated from the delay switch 64, and the delay switch 64 controls the electric push rod 63 to reset;

[0044] Because the piston rod of the air cylinder 51 is constantly extending and retracting, the fixed seat 52 and the plate body 54 are constantly swinging, and the conductive rod 66 is constantly squeezed and moved up and down, and the delay switch 64 is constantly triggered, causing the piston rod of the electric push rod 63 to continuously extend and retract, and the scraper 67 continuously slides back and forth on the top of the bottom plate 45 to scrape off the adhered coal slime. When the two scrapers 67 approach each other, they collide with each other, thereby shaking off the coal slime adhered to the scraper 67;

[0045] When the coal slime is dried, the above steps are repeated again. The staff controls the electric valve 48 to open, so that the evaporated coal slime is discharged downward through the electric valve 48 to be accumulated in the box 1. During the falling process, the coal slime is heated, dehydrated and dried again by the boiler flue gas in the box 1.

[0046] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0050] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An ultra-supercritical power station boiler flue gas waste heat drying coal slime device, comprising a box (1), characterized in that: A processing assembly (4) is installed inside the box (1), and the processing assembly (4) comprises a shell (41), and the shell (41) is installed inside the box (1). A pressurizing assembly (5) is installed on one side of the shell (41), and a bottom plate (45) is slidably connected inside the shell (41). A heating pipe (47) is installed inside the shell (41), and the heating pipe (47) is located below the bottom plate (45). Electric valves (48) are evenly installed on the top of the bottom plate (45), and a filter screen (49) is installed on the top of the electric valve (48). One side of the shell (41) is connected to two feed pipes (46), and the two feed pipes (46) extend to the outside of the box (1) away from a side of the shell (41). One side of the box (1) is connected to an air intake pipe (43), and an exhaust grille (42) is installed on the top of the box (1); A cleaning assembly (6) is installed on the top of the bottom plate (45), the cleaning assembly (6) comprising an activated carbon filter plate (61), the activated carbon filter plate (61) being slidably connected to the interior of the housing (41), a limiting assembly (7) being provided on the inner wall of the housing (41), the side wall of the activated carbon filter plate (61) and the bottom plate (45) being connected to the limiting assembly (7); A condenser (44) is installed on the top of the activated carbon filter plate (61); The pressurizing component (5) comprises a fixing seat (52), the fixing seat (52) being hinged to one side of the housing (41), and a plate body (54) being installed inside the fixing seat (52); A cylinder (51) is provided on one side of the housing (41) close to the fixing seat (52); an outer shell of the cylinder (51) is hinged to a side wall of the housing (41); a piston rod of the cylinder (51) is hinged to the top of the fixing seat (52); a locking bolt (53) is threadedly connected to one side of the fixing seat (52); one end of the locking bolt (53) extends into the interior of the fixing seat (52) and fits against one side of the plate (54); The bottom of the activated carbon filter plate (61) is fixedly connected to two fixing blocks (62), the bottoms of the two fixing blocks (62) are both equipped with electric push rods (63), the outer shells of the electric push rods (63) are hinged to the bottoms of the fixing blocks (62), the piston rods of the electric push rods (63) are hinged to a scraper (67), and the bottoms of the scrapers (67) are attached to the tops of the bottom plates (45); A conductive rod (66) is disposed inside the box (1), the top of the conductive rod (66) passes through the bottom plate (45) and the bottom of the activated carbon filter plate (61), a time delay switch (64) is installed on the top wall inside the box (1), and the conductive rod (66) corresponds to the time delay switch (64); The outer wall of the conductive rod (66) is sleeved with a first compression spring (65), the bottom of the first compression spring (65) is fixedly connected to the top of the activated carbon filter plate (61), and the top of the first compression spring (65) is fixedly connected to the top of the conductive rod (66); The limit assembly (7) comprises a slide groove (71), the slide grooves (71) are symmetrically arranged, and the two slide grooves (71) are both opened on the inner wall of the shell (41), and the interiors of the two slide grooves (71) are slidably connected with a first slider (72) and a second slider (74), the first slider (72) is connected to one side of the bottom plate (45), and the second slider (74) is connected to one side of the activated carbon filter plate (61), and a second compression spring (73) is connected between the first slider (72) and the second slider (74).

2. The device for drying coal slime by using waste heat from flue gas of an ultra-supercritical power station boiler according to claim 1, characterized in that: A door body (2) is hingedly connected to the front surface of the box body (1), and a sealing gasket (3) is installed on one side of the door body (2).

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