Automatic soot blower for calcining furnace

Abstract

The utility model discloses an automatic soot blower for a calcining furnace. The automatic soot blower comprises an automatic driving module, a special-shaped telescopic module, a blowing pipe gun module, a high-temperature flue gas collecting module and a control module, the automatic driving module drives the special-shaped telescopic module to move transversely, the special-shaped telescopic module drives the blowing pipe gun module to stretch out and draw back longitudinally so as to stretch into the calcining furnace to blow ash, and the high-temperature flue gas collecting module can collect accumulated ash falling off from the calcining furnace and provide steam for the blowing pipe gun module. The device can replace manual work to clean ash deposition in the flame path of the calcining furnace, so that the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to an automatic soot blowing device for a calciner. Background Art

[0002] The most important process in the production of pre-baked anodes for aluminum is the petroleum coke calcination link. The quality indicators of petroleum coke calcination are related to the service life and performance of the entire anode block. Therefore, grasping the process flow, temperature, and ash content of petroleum coke calcination is the core of the calcination link.

[0003] During the petroleum coke calcination process, the ash accumulation in the flue of the calciner seriously affects the calcination quality of petroleum coke. In the past, the cleaning plan relied on manual blowing one by one with compressed air, which had a large labor intensity. The high-temperature dust generated by blowing seriously polluted the on-site environment and threatened the health of workers. Content of the Utility Model

[0004] In view of the above problems, the utility model provides an automatic soot blowing device for a calciner, which realizes the automatic cleaning of the ash accumulation in the flue of the calciner, replaces manual operation, improves the on-site working environment, and reduces the labor intensity of workers.

[0005] The utility model is realized through the following technical solutions:

[0006] An automatic soot blowing device for a calciner includes an automatic driving module, a special-shaped telescopic module, a blowing pipe gun module, a calciner, a high-temperature flue gas collection module, and a control module, which are connected in sequence; the automatic driving module includes a driving device and a track, the driving device is movably arranged on the track, the special-shaped telescopic module includes a telescopic device and a roller device, the driving device and the telescopic device are fixedly connected and drive the telescopic device to move horizontally, the roller device is fixed outside the calciner, the blowing pipe gun module is fixedly connected to the telescopic device and longitudinally extends and retracts through the roller device to extend into the calciner under the drive of the telescopic device, the calciner includes a flue and a dust collection system, a thermocouple sensor is arranged in the flue, the thermocouple sensor is used to sense whether the temperature in the flue reaches the blowing temperature, the ash blown by the blowing pipe gun module is collected by the dust collection system under the action of gravity, the steam used for blowing by the blowing pipe gun module is provided by the high-temperature flue gas collection module, and the automatic driving module, the special-shaped telescopic module, and the blowing pipe gun module all work under the control of the control module using PLC.

[0007] Further, the automatic driving module includes a driving device and a track, and a steam pipeline is also arranged on the driving device.

[0008] Further, the special-shaped telescopic module includes a telescopic device and a roller device. The telescopic device is arranged on the driving device, and the roller device is fixedly connected to the outside of the calciner by bolts.

[0009] Further, the injection pipe gun module includes an injection pipe gun, an electromagnetic valve and injection holes arranged on the injection pipe gun.

[0010] Further, the injection pipe gun of the injection pipe gun module is fixed on the telescopic device and communicated with the steam pipeline on the driving device.

[0011] Further, the size of the injection pipe gun of the injection pipe gun module matches the size formed by the assembly of multiple rollers in the roller device, and the injection pipe gun can extend into the calciner through the roller device.

[0012] Further, the high-temperature flue gas collection module includes a dust collection system, a waste heat boiler and a gas storage tank. The dust collection system is inside the calciner, and the dust collection system, the waste heat boiler and the gas storage tank are connected in sequence through pipelines.

[0013] Further, the gas storage tank of the high-temperature flue gas collection module is communicated with the steam pipeline on the driving device of the automatic driving module.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] 1. The high-temperature dust generated by cleaning the injection pipe gun falls downward under the action of gravity and is perfectly collected by the dust collection system, solving the problems of unorganized emission and on-site dust.

[0016] 2. The flue gas after calcination in the calciner enters the waste heat boiler through the dust collection system. The waste heat boiler recovers and utilizes the waste heat of the flue gas to generate steam. The steam generated by the waste heat boiler is transported to the gas storage tank through pipelines and stored in the gas storage tank. That is, the steam used for purging is the product of waste heat recovery from the calciner, achieving the effect of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the automatic soot blowing device of the calciner according to an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged view of part a of the schematic structural diagram;

[0019] Figure 3 is a schematic structural diagram of the roller device according to an embodiment of the present utility model;

[0020] Figure 4 is a control relationship diagram according to an embodiment of the present utility model.

[0021] In the figure: 1. Automatic driving module; 11. Driving device; 110. Steam pipeline; 111. Stepper motor; 112. Wheel; 12. Track; 2. Telescopic module; 21. Telescopic device; 22. Roller device; 3. Blowing pipe gun module; 31. Blowing pipe gun; 32. Solenoid valve; 33. Air injection hole; 4. Calciner; 41. Blowing channel; 42. Fire channel; 5. High-temperature flue gas module; 51. Dust collection system; 52. Waste heat boiler; 53. Gas storage tank. Specific implementation mode

[0022] The technical solution of the utility model will be further described in detail and non-restrictively below in conjunction with the preferred embodiments and their accompanying drawings. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0023] As Figure 1 , 2 shown, corresponding to an automatic soot blowing device for a calciner according to an embodiment of the present utility model, which is characterized in that it includes an automatic driving module 1, a special-shaped telescopic module 2, a blowing pipe gun module 3, a calciner 4, a high-temperature flue gas collection module 5 and a control module 7 connected in sequence.

[0024] The automatic driving module 1 includes a driving device 11 and a track 12, the special-shaped telescopic module 2 includes a telescopic device 21 and a roller device 22, the driving device 11 is movably fixed on the track 12 and can move horizontally along with the track 12, the telescopic device 21 is fixedly connected to the driving device 11, and the driving device 11 moves horizontally to drive the telescopic device 21 to move horizontally.

[0025] Specifically, the driving device 11 is a frame welded by I-beams. Wheels 112 and a stepper motor 111 are arranged on the frame. The wheels 112 are driven by the stepper motor 111 to move the driving device 11 on the track 12. A steam pipe 110 for conveying steam is arranged on the frame. The driving device 11 drives the steam pipe 110 to move under the drive of the stepper motor 111.

[0026] The injection pipe gun module 3 includes an injection pipe gun 31, a solenoid valve 32 and an exhaust hole 33 arranged on the injection pipe gun 31. An injection channel 41 is arranged on the calciner 4. A roller device 22 is arranged outside the combustion furnace 4 at a position corresponding to the injection channel 41. A flue 42 and a flue 43 are arranged inside the combustion furnace 4. A thermocouple sensor 6 is arranged in the flue 42. The injection pipe gun 31 can directly extend into the flue 42 inside the combustion furnace 4 through the injection channel 41. The injection pipe gun 31 is fixedly connected to the telescopic device 21 and communicated with the steam pipe 110 on the driving device 11. The solenoid valve 32 is arranged at one end of the injection pipe gun 31 close to the telescopic device 21, and the exhaust hole 33 is arranged at one end of the injection pipe gun 31 close to the injection channel 41 of the calciner 4.

[0027] Specifically, the telescopic device 21 is an electric push rod driven by a motor. The electric push rod is fixedly connected to the injection pipe gun 31. The injection pipe gun 31 longitudinally moves downward to the injection channel 41 under the action of the electric push rod. The injection pipe gun 31 rolls through the injection channel 41 and extends into the flue under the rolling of the roller device 22. The solenoid valve 32 of the injection pipe gun 31 is opened under the control of the control module 7. Steam enters the flue 42 inside through the exhaust hole 33 of the injection pipe gun 31 to clean the dust and ash adhering to the flue wall. A negative pressure system is arranged inside the flue 43. Under the action of the negative pressure system, the cleaned ash will flow to the flue 43 along with the flue gas flow 44.

[0028] As Figure 3 shown, the roller device 22 includes rollers 221 and a roller frame 222. A round hole 2221 is opened in the middle of the roller frame. There is a gap 223 left in the middle after the three rollers are assembled. The size of the round hole 2221 is larger than the size of the injection pipe gun 31. The size of the gap 223 fits the size of the injection pipe gun 31 to achieve a clearance fit, so that the injection pipe gun 31 can roll into the injection channel 41 of the calciner 4 through the gap 223 to purge the ash on the flue wall.

[0029] The high-temperature flue gas collection module 4 includes a dust collection system 51, a waste heat boiler 52, and a gas storage tank 53. The dust collection system 51 is arranged at the position of the flue 43 and communicated with the flue 43. The dust collection system 51, the waste heat boiler 52, and the gas storage tank 53 are sequentially connected through pipelines. The flue gas after being calcined by the calciner 4 enters the waste heat boiler 52 after being filtered by the dust collection system 51. The waste heat boiler 52 recovers and utilizes the waste heat of the flue gas to generate steam. The steam generated by the waste heat boiler 52 is transported to the gas storage tank 53 through a pipeline and stored in the gas storage tank 53. The gas storage tank 53 is communicated with the steam pipeline 110 on the driving device 11 through a pipeline. Specifically, the steam blown by the blowing pipe gun 31 is provided by the gas storage tank 53. The high-temperature dust generated by the cleaning of the blowing pipe gun 31 is collected by the dust collection system 51 along the flue gas flow direction 44 under the action of the negative pressure system of the flue 43, solving the problems of unorganized emission and on-site dust.

[0030] During operation, the thermocouple sensor 6 arranged in the flue 42 senses that the temperature of the flue 42 reaches the purging temperature, and feeds back a signal to the control module 7. The control module 7 transmits the received signal to the driving device 11. The driving device 11 drives the telescopic device 21 to move horizontally on the track 21. After moving to the position of the blowing channel 41 under the drive of the stepping motor 111, the telescopic device 21 expands and contracts to drive the blowing pipe gun 31 to move longitudinally towards the blowing channel 41. The blowing pipe gun 31 extends into the interior of the flue 42 through the blowing channel 41 under the rolling of the roller device 22. The solenoid valve 32 of the blowing pipe gun 31 is opened under the control of the control module 7. Steam cleans the petroleum coke dust and ash adhering to the flue wall inside the flue 42 through the exhaust holes 33 of the blowing pipe gun 31. The high-temperature dust generated by the cleaning falls under the action of gravity and is collected by the dust collection system 51. Specifically, the flue gas after being calcined by the calciner 4 enters the waste heat boiler 52 through the dust collection system 51. The waste heat boiler 52 recovers and utilizes the waste heat of the flue gas to generate steam. The generated steam is transported to the gas storage tank 53 for storage by the waste heat boiler 52 through a pipeline. When the automatic soot blowing device of the calciner starts to work, the steam flows from the gas storage tank 53 to the steam pipeline 110 on the driving device 11, and then flows from the steam pipeline 110 to the blowing pipe gun 32, and sprays out towards the dust on the flue wall when the solenoid valve 32 of the blowing pipe gun 31 is opened.

[0031] The above embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. An automatic sootblowing device for a calcining furnace, characterized in that It comprises an automatic driving module (1), a special-shaped telescopic module (2), a blowpipe gun module (3), a calcining furnace (4), a high-temperature flue gas collection module (5), and a control module (7) which are connected in sequence; the automatic driving module (1) comprises a driving device (11) and a track (12); the driving device (11) is movably arranged on the track (12); the special-shaped telescopic module (2) comprises a telescopic device (21) and a roller device (22); the driving device (11) and the telescopic device (21) are fixedly connected and drive the telescopic device (21) to move laterally; the roller device (22) is fixed outside the calcining furnace (4); the blowpipe gun module (3) and the telescopic device (21) are fixedly connected. The calcining furnace (4) is connected to the blowpipe gun module (3), and is longitudinally extended and retracted through the roller device (22) under the drive of the telescopic device (21) to extend into the calcining furnace (4), wherein the calcining furnace (4) comprises a fire channel (42) and a flue (43), wherein a thermocouple sensor (6) is arranged in the fire channel (42), and the thermocouple sensor (6) is used to sense whether the temperature in the fire channel (42) reaches the purge temperature, and the ash blown off by the blowpipe gun module (3) enters the flue (43) along the flue gas flow direction (44) for collection, and the blowpipe gun module (3) uses steam for purge, and the steam is provided by the high-temperature flue gas collection module (5), and the blowpipe gun module (3) is provided with a solenoid valve (32) for controlling the opening and closing of the blowpipe gun module (3); The automatic soot blowing device of the calcining furnace sets the blowing time and blows in a cycle. Before blowing, the thermocouple sensor (6) needs to sense that the temperature in the fire channel (42) reaches the blowing temperature, and then feeds back a signal to the control module (7). After receiving the signal, the control module (7) controls the driving device (11) to move to the position of the fire channel (42). After the driving device (11) reaches the position, the telescopic device (21) drives the blowing pipe gun module (3) to extend and retract. Finally, the solenoid valve (32) opens to start the blowing operation. The automatic driving module (1), the special-shaped telescopic module (2) and the blowing pipe gun module (3) are all controlled by PLC under the control module (7).

2. The automatic sootblowing device for a calcining furnace according to claim 1, characterized in that: The driving device (11) is also provided with a steam pipe (110), and the driving device (11) drives the wheel (112) via the stepping motor (111).

3. The automatic sootblowing device for a calcining furnace according to claim 1, characterized in that: The telescopic device (21) is arranged on the driving device (11), and the roller device (22) is fixedly connected to the outside of the calcining furnace (4) by means of bolts.

4. The automatic sootblowing device for a calcining furnace according to claim 1, characterized in that: The blowpipe gun module (3) comprises a blowpipe gun (31) and a solenoid valve (32) and an air jet hole (33) arranged on the blowpipe gun.

5. The automatic sootblowing device for a calcining furnace according to claim 4, characterized in that: The blowpipe gun (31) of the blowpipe gun module (3) is fixed on the telescopic device (21) and is connected to the steam pipeline (110) on the driving device (11).

6. The automatic sootblowing device for a calcining furnace according to claim 4, characterized in that: The size of the blowpipe gun (31) matches the size of a gap (223) formed by assembling a plurality of rollers in the roller device (22), and the blowpipe gun (31) can extend into the calcining furnace (4) through the roller device (22).

7. The automatic sootblowing device for a calcining furnace according to claim 1, characterized in that: The high-temperature flue gas collection module (5) comprises a dust collection system (51), a waste heat boiler (52) and a gas storage tank (53); the dust collection system (51) is inside the calcining furnace; the dust collection system (51), the waste heat boiler (52) and the gas storage tank (53) are connected in sequence via pipelines.

8. The automatic sootblowing device for a calcining furnace according to claim 7, characterized in that: The gas storage tank (53) of the high-temperature flue gas collection module (5) is in communication with a steam pipeline (110) on a driving device (11) of the automatic driving module (1).

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