High-efficiency pyrolysis gasification device for waste garment materials and use method of high-efficiency pyrolysis gasification device

Abstract

The invention discloses a waste garment fabric efficient pyrolysis gasification device and a using method, the waste garment fabric efficient pyrolysis gasification device comprises a crushing system, a circulating fluidized bed boiler system, a steam treatment system and a waste gas treatment system, and a first conveying belt is arranged between the crushing system and a boiler feeding port of the circulating fluidized bed boiler system; the steam treatment system is connected with a steam outlet of the circulating fluidized bed boiler system through a gas outlet pipeline, the circulating fluidized bed boiler system is connected with an external waste gas treatment system through a flue, and the crushing system comprises a crushing and drying device, a secondary crushing device and a supporting frame. The crushing and drying device and the secondary crushing device are both installed on the supporting frame, the secondary crushing device is located below the crushing and drying device, and the bottom end of the first conveying belt is located below the secondary crushing device. The device performs crushing, drying and secondary crushing procedures, so that the fabric is dry and fluffy, the volume of the waste fabric is reduced, the combustion efficiency is improved, and efficient pyrolysis and gasification are realized in a circulating fluidized bed boiler system.

Description

Technical Field

[0001] The invention relates to the field of energy utilization, and in particular to a high-efficiency pyrolysis and gasification device for waste clothing fabrics and a use method thereof. Background Art

[0002] With the continuous development of industrial production, the consumption of natural resources and the rapid growth of waste generation have caused the increasing depletion of some natural resources and the serious accumulation of solid waste worldwide. The resource utilization of general industrial solid waste will be an important means to transform my country's economic development mode and build a resource-saving society. At present, industrial solid waste incineration power generation has received increasing attention as a means of reduction, resource utilization and harmlessness. The circulating fluidized bed boiler system has the advantages of high thermal efficiency, high combustion intensity, wide load adjustment range, good fuel adaptability and good peak-shaving performance, which is very suitable for the incineration power generation of waste clothing fabrics. However, the grate system where waste clothing fabrics directly enter the furnace is dried and burned through the drying component, combustion component and burnout component, but the stacked waste clothing fabrics cannot be fully dried in the traditional drying component, and only the peripheral waste fabrics can be dried. In addition, the waste fabrics are large in area and stacked, which reduces the efficiency of combustion in the furnace. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a high-efficiency pyrolysis and gasification device for waste clothing fabrics. The device pre-treats the waste clothing fabrics before they enter the boiler system for combustion, ensuring that the treated waste clothing fabrics are more fully burned in the furnace, improving the combustion efficiency, and realizing high-efficiency pyrolysis and gasification in the circulating fluidized bed boiler system.

[0004] The present invention is completed by adopting the following technical scheme: a high-efficiency pyrolysis and gasification device for waste clothing fabrics, including a crushing system, a circulating fluidized bed boiler system, a steam treatment system and a waste gas treatment system, a first conveyor belt is arranged between the crushing system and the boiler feed port of the circulating fluidized bed boiler system, the circulating fluidized bed boiler system is connected to the steam treatment system through an exhaust pipe, and the circulating fluidized bed boiler system is connected to an external waste gas treatment system through a flue, the crushing system includes a crushing and drying device, a secondary crushing device and a support frame, the crushing and drying device and the secondary crushing device are both installed on the support frame, the secondary crushing device is located below the crushing and drying device, and the bottom end of the first conveyor belt is located below the secondary crushing device.

[0005] Furthermore, the crushing and drying device includes a crushing and drying shell, a drying cylinder, a crushing device, a hot air blower, a driving motor and a control device. The crushing device is placed in the drying cylinder. The driving motor controls the rotation of the crushing device and the drying cylinder respectively through the forward and reverse transmission components. The hot air blower is respectively connected to the crushing device and the air duct on the outer wall of the drying cylinder through the hot air pipe, and hot air is provided to the inside of the cylinder through the hot air blower. The hot air blower and the driving motor are both electrically connected to the control device to control the opening or closing of the driving motor and the hot air blower.

[0006] Furthermore, the first conveyor belt is provided with a spraying device, which is close to the boiler feed inlet of the circulating fluidized bed boiler system. The spraying device includes a spraying shell, at least one nozzle and at least one stirring roller. The nozzle is arranged at the top of the inner wall of the shell and is connected to the silo through a pipe. The stirring roller is rotatably hinged under the shell. The stirring roller partially protrudes from the bottom opening end of the spraying shell. The combustion aid is placed in the silo. The combustion aid is sprayed onto the crushed fabric on the first conveyor belt through the pipe and the nozzle. The rotation of the stirring roller makes the combustion aid and the fabric mixed more evenly. The fabric mixed with the combustion aid is continuously conveyed to the boiler feed inlet of the circulating fluidized bed boiler system through the first conveyor belt.

[0007] Furthermore, the upper and lower ends of the crushing and drying shell are respectively provided with a feed port and a discharge port, and the feed port and the discharge port are respectively provided with an openable feed cover and a discharge cover through a driving system, and the upper and lower ends of the drying cylinder are respectively provided with an openable upper cover and a lower cover through a driving system, and the control device is electrically connected to the driving system, so as to control the driving system to open or close, and drive the feed cover, the discharge cover, the upper cover and the lower cover to be in an open or closed state.

[0008] Furthermore, the crushing device includes a hollow shaft and at least one group of blades, a plurality of first air holes are arranged on the side wall of the hollow shaft, the rear end section of the hollow shaft passes through the drying cylinder and is connected to the forward and reverse transmission assembly, and the rear end of the hollow shaft is connected to the air outlet end of the second hot air duct through a bearing.

[0009] Furthermore, a hollow driving rod is provided at the rear end of the drying cylinder, and the rear end section of the hollow shaft rod passes through the hollow part of the hollow driving rod, the hollow driving rod and the hollow shaft rod are respectively connected to the two output ends of the forward and reverse transmission assembly, and the rotating shaft of the driving motor is connected to the input end of the forward and reverse transmission assembly. The driving motor drives the forward and reverse transmission assembly to rotate through the rotating shaft, and the forward and reverse transmission assembly respectively controls the drying cylinder and the crushing device to rotate in opposite directions.

[0010] Furthermore, two drum racks are symmetrically arranged in the shell, and the drying drum can be rotatably installed on the drum racks. The space between the two drum racks forms an air duct. The hot air blower is connected to one of the drum racks through a first hot air pipe, and the body of the drying drum has multiple second air holes.

[0011] Furthermore, the control device is provided with a control panel, and the control panel is arranged at the outer end of the crushing and drying shell.

[0012] Furthermore, the secondary crushing device includes a shell and a crushing roller assembly, the upper and lower ends of the shell are provided with openings, the crushing roller assembly includes at least one active crushing roller and at least one driven crushing roller, the surfaces of the active crushing roller and the driven crushing roller are provided with crushing teeth, adjacent crushing rollers are meshed with each other, the active crushing roller is connected to an external second driving motor, the second driving motor drives the active crushing roller to work, and the active crushing roller rotates through the meshing of the active crushing roller and the driven crushing roller.

[0013] Beneficial effects of the present invention: 1. The waste clothing fabrics are transferred to the crushing and drying system through the second conveyor belt for drying and preliminary crushing. The waste clothing fabrics after drying and crushing are dry and fluffy, and the volume of the waste fabrics is reduced, which improves the combustion efficiency, shortens the combustion time, and realizes efficient pyrolysis and gasification in the circulating fluidized bed boiler system.

[0014] 2. The hot air blower in the crushing and drying device inputs hot air into the air duct and the hollow shaft through two hot air pipes, and enters the drying cylinder through the first air hole and the second air hole. The hot air is transmitted to the cylinder from the side wall and the center of the cylinder respectively, so that the fabric is dried more evenly. The driving motor drives the crushing device and the cylinder to rotate through the forward and reverse transmission components. The crushing device and the cylinder rotate in opposite directions, so that the waste fabric is fully dried, and the crushing efficiency and the fluffiness of the fabric are improved.

[0015] 3. The waste fabrics are crushed twice by the crushing and drying device and the secondary crushing device to improve the crushing effect of the waste clothing fabrics.

[0016] 4. Before the crushed and dried fabrics enter the furnace, they are sprayed and mixed with combustion aids through a spraying device. The fabrics mixed with flame retardants can improve combustion efficiency and shorten combustion time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention has the following accompanying drawings: Figure 1 It is a schematic diagram of the structure of a circulating fluidized bed boiler system of a crushing system in a high-efficiency pyrolysis and gasification device for waste clothing fabrics; Figure 2 It is a structural schematic diagram of a high-efficiency pyrolysis and gasification device for waste clothing fabrics; Figure 3 It is a structural schematic diagram of the first embodiment of the crushing and drying device; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the medium crushing and drying device; Figure 5 is a schematic diagram of the structure of the spraying device; Figure 6 It is a schematic diagram of the internal structure of the secondary crushing device; Figure 7 It is a schematic diagram of the process of a high-efficiency pyrolysis and gasification device for waste clothing fabrics; Figure 8 It is a schematic structural diagram of the second embodiment of the crushing and drying device.

[0018] Figure numerals: first conveyor belt 1, crushing and drying device 2, secondary crushing device 3, support frame 4, spraying device 5, second conveyor belt 6, circulating fluidized bed boiler system 7, desulfurization tower 8, flue gas bag dust removal device 9, chimney 10, drive system 11, crushing assembly 20, crushing and drying shell 21, drying cylinder 22, crushing device 23, drive motor 24, hot air blower 25, forward and reverse transmission assembly 26, exhaust port 27, control panel 28, cylinder frame 29, air duct 30, shell 31, opening 32, active crushing roller 33, driven crushing roller 34, crushing teeth 35, guide hopper 41, spray shell 51, nozzle 52, stirring roller 53, pipeline 54, infrared sensor 55, silo 56, boiler feed port 71, flue 72, furnace 73, separator recovery device 74, feed channel 75, peat fuel pipeline 76, outlet pipeline 77, steam drum 78, feed port 211, outlet port 212, feed cover 213, outlet cover 214, upper cover 221, lower cover 222, hollow drive rod 223, second air hole 224, hollow shaft 231, blade 232, first air hole 233, bearing 234, rotating shaft 241, first hot air pipe 251, second hot air pipe 252, driving gear 261, driven gear 262, first output gear 263, second output gear 264. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1-7The first embodiment of the present invention discloses a high-efficiency pyrolysis and gasification device for waste clothing fabrics, including a crushing system, a circulating fluidized bed boiler system 7, a steam treatment system and a waste gas treatment system. A first conveyor belt 1 is arranged between the crushing system and the boiler feed port 71 of the circulating fluidized bed boiler system, the circulating fluidized bed boiler system 7 is connected to the steam treatment system through an outlet pipe 77, and the circulating fluidized bed boiler system 7 is connected to an external waste gas treatment system through a flue 72. After the waste clothing fabrics are dried and crushed by the crushing system, they are transported to the circulating fluidized bed boiler system 7 for combustion through the first conveyor belt 1. The steam generated during the combustion process is transmitted to the outlet pipe 77 through the steam outlet end of the circulating fluidized bed boiler system 7, and then enters the steam treatment system through the outlet pipe 77 for treatment. The smoke after combustion in the furnace 73 enters the waste gas treatment system through the flue 72, and is discharged after being treated by the waste treatment system. The waste clothing fabrics are dried and crushed by the crushing system. The waste clothing fabrics after drying and crushing are dry and fluffy, and the volume of the waste fabrics is reduced, which improves the combustion efficiency, shortens the combustion time, and realizes efficient pyrolysis and gasification in the circulating fluidized bed boiler system.

[0021] Specifically, the crushing system includes a crushing and drying device 2, a secondary crushing device 3 and a support frame 4. The crushing and drying device 2 and the secondary crushing device 3 are both installed on the support frame 4. The secondary crushing device 3 is located below the crushing and drying device 2, and the bottom end of the first conveyor belt 1 is located below the secondary crushing device 3.

[0022] The crushing and drying device 2 comprises a crushing and drying shell 21, a drying cylinder 22, a crushing device 23, a hot air blower 25, a driving motor 24 and a control device, wherein the control device and the drying cylinder 22 are placed in the crushing and drying shell 21. The crushing and drying shell 21 is provided with a feed port 211 and a discharge port 212 at the upper and lower ends thereof, respectively, and the feed port 211 and the discharge port 212 are respectively provided with an openable feed cover 213 and a discharge cover 214 through the driving system 11, and the upper opening and the lower opening of the upper and lower ends of the drying cylinder 22 are respectively provided with an openable upper cover 221 and a lower cover 222 through the driving system 11, and the driving system is a driving system for driving the opening or closing of the feed cover 213, the discharge cover 214, the upper cover 221 of the drying cylinder and the lower cover 222 of the drying cylinder (the driving system and the control device for driving the cover to open are both prior art, and the specific structure is not described in detail). The driving motor 24 is arranged outside the crushing and drying shell 21, and the crushing device 23 is placed in the drying cylinder 22. The driving motor 24 controls the crushing device 23 and the drying cylinder 22 to rotate in opposite directions through the forward and reverse transmission components 26. The hot air blower 25 is located at the top of the crushing and drying shell 21. The hot air blower 25 is connected to the crushing device 23 and the outer wall air duct of the drying cylinder 22 through two hot air pipes, and provides hot air to the inside of the cylinder through the hot air blower 25. The control device is electrically connected to the driving system 11, the driving motor 24 and the hot air blower 25 configured on the drying cylinder, respectively, to control the opening or closing of the driving system 11, the driving motor 24 and the hot air blower 25. The control device is equipped with a control panel 28, and the control panel 28 is arranged at the outer end of the crushing and drying shell. An exhaust port 27 is also arranged at the rear of the crushing and drying shell, and steam is discharged from the exhaust port 27 during the drying process.

[0023] The crushing device 23 includes a hollow shaft 231 and at least one set of blades 232. The side wall of the hollow shaft is provided with a plurality of first air holes 233. The rear end section of the hollow shaft 231 passes through the drying cylinder 22 and is connected to the forward and reverse transmission assembly 26. The rear end of the drying cylinder 22 is provided with a hollow driving rod 223. The rear end section of the hollow shaft 231 passes through the hollow part of the hollow driving rod 223. The hollow shaft 231 and the hollow driving rod 223 are in a sleeve structure. The hollow driving rod 223 and the hollow shaft 231 are respectively connected to the two output ends of the forward and reverse transmission assembly 26. The rotating shaft 241 of the driving motor 24 passes through the housing and is connected to the input end of the forward and reverse transmission assembly 26. The driving motor drives the forward and reverse transmission assembly 26 to rotate through the rotating shaft 241. The forward and reverse transmission assembly 26 controls the drying cylinder 22 and the crushing device 23 to rotate in opposite directions. Specifically, the forward and reverse transmission assembly 26 is composed of a driving gear 261, a driven gear 262, a first output gear 263 and a second output gear 264. The first output gear 263 and the driven gear 262 are respectively meshed with the driving gear 261, and the second output gear 264 is meshed with the driven gear 262. The driving gear 261 is the input end of the forward and reverse transmission assembly, the driving motor shaft 241 is plugged and fixed on the driving gear 261, the first output gear 263 and the second output gear 264 are the output ends of the forward and reverse transmission assembly, and the rear end section of the hollow shaft 231 passes through the hollow driving rod 223 and is plugged into the first output gear 263, and the hollow driving rod 223 is plugged into the second output gear 264. When the driving motor 24 drives the rotating shaft 241 to rotate, the driving gear 261 is driven to rotate, and the driving gear 261 drives the first output gear 263 and the driven gear 262 to rotate, and the driven gear 262 drives the second output gear 264 to rotate, and the first output gear 263 and the second output gear 264 rotate in opposite directions, so that the crushing device 23 and the drying cylinder 22 rotate in opposite directions, so that the waste fabrics are fully dried while improving the crushing efficiency and the fluffiness of the fabrics.

[0024] The two hot air pipes of the hot air blower 25 include a first hot air pipe 251 and a second hot air pipe 252. Two drum racks 29 are symmetrically arranged in the crushing and drying shell 21, and the drying drum 22 can be rotatably mounted on the drum rack 29. The space between the two drum racks forms an air duct 30. The hot air blower 25 is connected to one of the drum racks 29 through the air outlet end of the first hot air pipe 251. At the same time, the body of the drying drum 22 has a plurality of second air holes 224. The hot air blower transmits hot air to the air duct 30 through the first hot air pipe 251, and then enters the drying drum through the second air holes 224. The rear end of the hollow shaft 231 is connected to the air outlet end of the second hot air pipe 252 through a bearing 234. The hot air blower transmits hot air to the hollow shaft 231 through the second hot air pipe 252, and then outputs it to the inner cavity of the drying drum 22 through the first air hole 233. The air inlet ends of the first hot air pipe 251 and the second hot air pipe 252 pass through the shell and are connected to the hot air blower. Two hot air pipes input hot air into the air duct 30 and the inner cavity of the hollow shaft 231, and enter the drying cylinder through the first air hole 233 and the second air hole 224. The hot air is transmitted to the cylinder from the side wall and the center of the cylinder respectively, so that the fabric is dried more evenly, the drying time is saved, and the drying efficiency is improved.

[0025] The secondary crushing device 3 includes a shell 31 and a crushing roller assembly, and openings 32 are provided at both ends of the shell. The crushing roller assembly includes an active crushing roller 33 and a driven crushing roller 34. The surfaces of the active crushing roller 33 and the driven crushing roller 34 are provided with crushing teeth 35, and the adjacent crushing rollers are meshed with each other. The active crushing roller 33 is connected to an external second driving motor, and the second driving motor drives the active crushing roller to work, and the active crushing roller and the driven crushing roller are meshed and rotated. Or the active crushing roller and the driven crushing roller are respectively connected to an external second driving motor, and the active crushing roller and the driven crushing roller are driven to mesh and rotate. A feed hopper 41 is provided on the lower surface of the support frame 4 platform, and the upper opening end of the feed hopper corresponds to the discharge port 212, and the lower opening end of the feed hopper extends toward the secondary crushing device 3. The drying and crushing device dries and preliminarily crushes the waste clothing fabrics, and then opens the discharge cover 214 to be discharged from the discharge port 212, and then transmitted to the secondary crushing device 3 through the feed hopper 41 for secondary crushing. Among them, the density between adjacent crushing teeth in the secondary crushing device is relatively dense, and the blade 232 in the crushing device performs preliminary crushing on the waste clothing fabrics. The denser crushing teeth in the secondary crushing device cooperate to crush the preliminary crushed fabrics more finely. After the waste fabrics are crushed twice, the crushing effect is greatly improved, which is convenient for subsequent burning.

[0026] The first conveyor belt 1 is provided with a spraying device 5, which is located near the boiler feed inlet of the circulating fluidized bed boiler system. The spraying device 5 includes a spraying shell 51, at least one nozzle 52 and at least one stirring roller 53. The nozzle 52 is arranged at the top of the inner wall of the spraying shell 51 and is connected to the silo 56 through a pipe 54. The stirring roller 53 is rotatably hinged below the spraying shell 51. The stirring roller 53 partially protrudes from the bottom opening end of the spraying shell. The combustion aid is placed in the silo 56. The combustion aid is sprayed on the crushed fabric on the first conveyor belt 1 through the pipe 54 and the nozzle 52. The stirring roller 53 rotates to make the combustion aid and the fabric more evenly mixed. The fabric mixed with the combustion aid is continuously conveyed to the boiler feed inlet of the circulating fluidized bed boiler system through the first conveyor belt. Before the crushed and dried fabric enters the furnace, the combustion aid is sprayed and mixed by the spraying device, and the fabric mixed with the flame retardant is mixed to improve the combustion efficiency and shorten the combustion time.

[0027] The method for using the above-mentioned waste clothing fabric high-efficiency pyrolysis and gasification device comprises the following steps: (1) The control device in the crushing and drying shell 21 is started through the control panel 28, and a command is sent to the drive system 11 so that the upper cover 221 and the feed cover 213 are in an open state; (2) A second conveyor belt 6 is disposed at the front end of the crushing system, and a certain amount of waste clothing fabrics is transported to the feed inlet 211 of the crushing and drying device through the second conveyor belt 6, and enter the drying cylinder 22 through the opening on the drying cylinder body; (3) When a certain amount of waste clothing fabrics are put into the drying drum 22, the control device sends a command to the drive system 11 to close the upper cover 221 and the feed cover 213, and start the drive motor 24 and the hot air blower 25. The hot air blower 25 inputs hot air to the air duct 30 and the hollow shaft 231 through two hot air pipes, respectively. The hot air in the air duct enters the drying drum through the second air vent 224 of the drying drum body, and the hollow shaft 231 enters the drying drum 22 through the first air vent 233 of the side wall; (4) The driving motor 24 controls the hollow shaft 231 and the drying drum 22 to rotate in opposite directions, and the waste clothing fabrics are rolled and dried in the drying drum. At the same time, the crushing device 23 rotates in the drying drum to crush the waste clothing fabrics in the drying drum. After the drying process is completed, the control device opens the lower cover 222 and the discharge cover 214, and the waste fabrics that have been dried and crushed are transmitted to the secondary crushing device 3 through the discharge hopper below the shell.

[0028] (5) The dried and crushed fabric is crushed again by the crushing roller of the secondary crushing device 3, falls into the inlet end of the first conveyor belt 1, and is conveyed to the boiler feed inlet 71 of the circulating fluidized bed boiler system via the first conveyor belt.

[0029] (6) When the secondary crushed fabric passes through the spraying device 5, the infrared sensor 55 at the front end of the spraying device senses the fabric passing by, starts the spray head 52 and the stirring roller 53, sprays the combustion aid on the fabric, and the stirring roller 53 at the bottom rotates to evenly mix the combustion aid with the fabric. The fabric mixed with the combustion aid is easier to burn. The fabric mixed with the combustion aid is further conveyed to the boiler feed port 71 through the first conveyor belt 1, and enters the furnace of the circulating fluidized bed boiler system through the feed channel 75.

[0030] (7) Water is supplied to the water-cooled wall of the circulating fluidized bed boiler system, and the pre-treated peat fuel is put into the furnace through the feed channel, and ignited and burned. Specifically, the circulating fluidized bed boiler system 7 includes a flue 72, a furnace 73 and a separation recovery device 74, the bottom of the furnace is configured with an ignition system and a slag discharge channel, and the furnace is provided with a water-cooled wall. The furnace feed channel 75 is also connected to the peat fuel pipeline 76, and the peat fuel is transmitted to the feed channel 75 through the peat fuel pipeline and put into the furnace 73, and ignited and burned using the ignition system, and denitrification and desulfurization agents are added during the combustion process for desulfurization and denitrification treatment.

[0031] (8) The heat generated by the combustion in the furnace is transferred to the water-cooled wall to generate steam that enters the steam drum 78, and then enters the steam treatment system through the gas outlet pipe 77 (the steam treatment system is a prior art and is not indicated in the attached figure). The flue gas generated by the combustion in the furnace 73 is separated by the separation recovery device 74, and the separated combustion particles are then input into the furnace for circulating combustion. The flue gas enters the exhaust gas treatment system through the flue. Among them, the steam treatment system includes an extraction condensing steam turbine, and the steam is transmitted to the extraction condensing steam turbine to generate electricity and provide heat energy to users. The exhaust gas treatment system includes a desulfurization tower 8, a flue gas bag dust removal device 9 and a chimney 10. The flue gas is desulfurized by the desulfurization tower. When the flue gas enters the desulfurization tower, activated carbon can be sprayed into the flue gas, and the flue gas is dusted by the flue gas bag dust removal device 9 and discharged from the chimney 10.

[0032] Reference Figure 8The second embodiment of the present invention discloses a high-efficiency pyrolysis and gasification device for waste clothing fabrics, which is basically the same as the first embodiment, except that: the crushing assembly 20 is also arranged in the crushing and drying device 2, and the crushing assembly 20 is installed in the shell and located between the feed port 211 and the drying cylinder 22, and the crushing assembly 20 is composed of at least two crushing rollers, one of which is connected to an external drive motor, and the other crushing roller is connected to the external drive motor through a transmission belt. The crushing assembly is used for primary crushing, and the crushing device is used for secondary crushing after entering the crushing and drying shell. Among them, the spacing between adjacent crushing teeth in the secondary crushing device is smaller than the spacing between crushing teeth on the crushing roller, so that after the crushing assembly 20 and the blade 232 in the crushing device perform preliminary crushing on the waste clothing fabrics, the denser crushing teeth in the secondary crushing device cooperate to perform more fine crushing on the preliminary crushed fabrics. The waste clothing fabrics are crushed by the crushing assembly, the blade, and the secondary crushing device in the crushing and drying device, which improves the crushing effect and ensures that the crushed fabrics can be more fully burned in the circulating fluidized bed boiler system 7.

[0033] 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. A highly efficient pyrolysis and gasification device for waste clothing fabrics, characterized by: It includes a crushing system, a circulating fluidized bed boiler system, a steam treatment system and a waste gas treatment system. A first conveyor belt is arranged between the crushing system and the boiler feed port of the circulating fluidized bed boiler system. The circulating fluidized bed boiler system is connected to the steam treatment system through an exhaust pipe. The circulating fluidized bed boiler system is connected to an external waste gas treatment system through a flue. The crushing system includes a crushing and drying device, a secondary crushing device and a support frame. The crushing and drying device and the secondary crushing device are both installed on the support frame. The secondary crushing device is located below the crushing and drying device. The bottom end of the first conveyor belt is located below the secondary crushing device.

2. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 1 is characterized by: The crushing and drying device includes a crushing and drying shell, a drying cylinder, a crushing device, a hot air blower, a driving motor and a control device. The crushing device is placed in the drying cylinder. The driving motor controls the rotation of the crushing device and the drying cylinder respectively through the forward and reverse transmission components. The hot air blower is respectively connected to the crushing device and the air duct on the outer wall of the drying cylinder through the hot air pipe, and hot air is provided to the inside of the cylinder through the hot air blower. The hot air blower and the driving motor are both electrically connected to the control device to control the opening or closing of the driving motor and the hot air blower.

3. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 2 is characterized by: The first conveyor belt is provided with a spraying device, which is close to the boiler feed inlet of the circulating fluidized bed boiler system. The spraying device includes a spraying shell, at least one nozzle and at least one stirring roller. The nozzle is arranged on the top of the inner wall of the shell and is connected to the silo through a pipeline. The stirring roller is rotatably hinged under the shell. The stirring roller partially protrudes from the bottom opening end of the spraying shell. The combustion aid is placed in the silo. The combustion aid is sprayed onto the crushed fabric on the first conveyor belt through the pipeline and the nozzle. The rotation of the stirring roller makes the combustion aid and the fabric mixed more evenly. The fabric mixed with the combustion aid is continuously conveyed to the boiler feed inlet of the circulating fluidized bed boiler system through the first conveyor belt.

4. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 2 or 3 is characterized in that: The upper and lower ends of the crushing and drying shell are respectively provided with a feed port and a discharge port, and the feed port and the discharge port are respectively provided with an openable feed cover and a discharge cover through a driving system, and the upper and lower ends of the drying cylinder are respectively provided with an openable upper cover and a lower cover through a driving system, and the control device is electrically connected to the driving system, so as to control the driving system to be opened or closed, and drive the feed cover, the discharge cover, the upper cover and the lower cover to be in an open or closed state.

5. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 4 is characterized by: The crushing device includes a hollow shaft and at least one set of blades. The side wall of the hollow shaft is provided with a plurality of first air holes. The rear end section of the hollow shaft passes through the drying cylinder and is connected to the forward and reverse transmission assembly. The rear end of the hollow shaft is connected to the air outlet end of the second hot air duct through a bearing.

6. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 5 is characterized by: A hollow driving rod is provided at the rear end of the drying cylinder, and the rear end section of the hollow shaft rod passes through the hollow part of the hollow driving rod. The hollow driving rod and the hollow shaft rod are respectively connected to the two output ends of the forward and reverse transmission components, and the rotating shaft of the driving motor is connected to the input end of the forward and reverse transmission component. The driving motor drives the forward and reverse transmission component to rotate through the rotating shaft, and the forward and reverse transmission component respectively controls the drying cylinder and the crushing device to rotate in opposite directions.

7. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 3, 5 or 6, characterized in that: Two drum racks are symmetrically arranged in the shell, and the drying drum is rotatably mounted on the drum racks. The space between the two drum racks forms an air duct. The hot air blower is connected to one of the drum racks through a first hot air pipe, and the body of the drying drum has a plurality of second air holes.

8. The high-efficiency pyrolysis and gasification device for waste clothing fabrics according to claim 7 is characterized by: The control device is equipped with a control panel, and the control panel is arranged at the outer end of the crushing and drying shell.

9. A highly efficient pyrolysis and gasification device for waste clothing fabrics according to claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that: The secondary crushing device includes a shell and a crushing roller assembly, and openings are arranged at both upper and lower ends of the shell. The crushing roller assembly includes at least one active crushing roller and at least one driven crushing roller. The surfaces of the active crushing roller and the driven crushing roller are provided with crushing teeth, and adjacent crushing rollers are meshed with each other. The active crushing roller is connected to an external second driving motor, and the second driving motor drives the active crushing roller to work, and the active crushing roller rotates through the meshing of the active crushing roller and the driven crushing roller.

10. A method for using a high-efficiency pyrolysis and gasification device for waste clothing fabrics, characterized by: The steps are as follows, (1) Start the control device in the crushing and drying shell so that the upper cover and the feed cover are in the open state; (2) A second conveyor belt is arranged at the front end of the crushing system, and a certain amount of waste clothing fabrics is transported to the inlet of the crushing and drying device through the second conveyor belt, and then enter the drying cylinder through the opening on the drying cylinder; (3) When a certain amount of waste clothing fabrics is put into the drying drum, the control device sends a command to close the upper cover and the feed cover, and starts the drive motor and the hot air blower. The hot air blower inputs hot air to the air duct and the hollow shaft through two hot air pipes respectively. The hot air in the air duct enters the drying drum through the second air vent of the drying drum body, and the hollow shaft enters the drying drum through the first air vent of the side wall; (4) The driving motor controls the hollow shaft and the drying drum to rotate in opposite directions, and the waste clothing fabrics are rolled and dried in the drying drum. At the same time, the crushing device rotates in the drying drum to crush the waste clothing fabrics in the drying drum. After the drying process is completed, the control device opens the lower cover and the discharge cover, and the waste fabrics that have been dried and crushed are transmitted from the discharge hopper below the shell to the secondary crushing device; (5) The dried and crushed fabric is crushed again by the crushing roller of the secondary crushing device, falls into the inlet end of the first conveyor belt, and is conveyed to the boiler feed inlet of the circulating fluidized bed boiler system via the first conveyor belt; (6) When the fabric after secondary crushing passes through the spraying device, the infrared sensor at the front end of the spraying device senses the fabric passing through, starts the spray head and the stirring roller, sprays the combustion aid on the fabric, and the stirring roller at the bottom rotates to evenly mix the combustion aid with the fabric. The fabric mixed with the combustion aid is further conveyed to the feed port through the first conveyor belt, and enters the furnace of the circulating fluidized bed boiler system through the feed channel; (7) supplying water to the water-cooled wall of the circulating fluidized bed boiler system, feeding the pretreated peat fuel into the furnace through the feed channel, and igniting and burning; (8) The heat generated by the combustion in the furnace is transferred to the water-cooled wall to generate steam that enters the steam drum and then enters the steam treatment system through the exhaust pipe. The flue gas generated by the combustion in the furnace is separated by a separation and recovery device, and the separated combustion particles are then input into the furnace for circulating combustion. The flue gas enters the exhaust gas treatment system through the flue.

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