Pyrolysis activation all-in-one machine for resin resource recovery

Abstract

The utility model relates to a pyrolysis activation all -in -one of resin resourceful regeneration, including pyrolysis activation jar, feed pipe, flue gas pipeline and preheating utilization mechanism, the pyrolysis activation jar side intercommunication has flue gas pipeline, is equipped with the feed pipe at the top, preheating utilization mechanism installs at the feed pipe surface, and with flue gas pipeline exhaust end intercommunication, hot gas in pyrolysis activation jar passes through flue gas pipeline and enters into rotary pipeline inside, and the inside rotary pipeline is equipped with heat conduction sleeve, and heat conduction sleeve surface is opened with the spiral groove of rotary pipeline adaptation, and the contact area of rotary pipeline and heat conduction sleeve increases, better heat absorption of rotary pipeline is absorbed to heat conduction sleeve surface, and is given to feed pipe, and the resin passes through the feed frame of external equipment and enters the feed pipe, wherein the external equipment is equipped with control valve, and the resin in feed pipe is preheated and handled, and the feed pipe surface is equipped with the heat preservation frame, can lock the heat, reduces the loss of heat.

Description

Technical Field

[0001] This utility model relates to the field of resin resource recycling technology, specifically to an integrated pyrolysis and activation machine for resin resource recycling. Background Technology

[0002] In resin resource recycling technology, the pyrolysis-activation integrated machine is a key piece of equipment, bearing the important responsibility of converting waste resin into reusable resources. In the traditional pyrolysis process, a large amount of heat is emitted with the hot gas, which not only wastes energy, but also the resin material entering the pyrolysis-activation integrated machine is often at room temperature. Directly feeding it into the pyrolysis reactor will require more energy to raise the material temperature to the required reaction range, which not only prolongs the pyrolysis cycle, but also reduces the overall processing efficiency of the equipment.

[0003] In the production process of composite materials, a large amount of scrap and waste products are generated. Among them, the waste composed of resin and reinforcing fiber accounts for a large proportion. The pyrolysis and activation integrated machine can pyrolyze and recycle the resin in these wastes. For glass fiber reinforced unsaturated polyester resin waste, it is impossible to use hot air to heat the composite material before entering the integrated machine, and it is impossible to soften the internal structure of the resin in the initial stage, which is not conducive to the breaking of chemical bonds during the pyrolysis process. Therefore, we need to provide a pyrolysis and activation integrated machine for the resource recycling of resin. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated pyrolysis and activation machine for resin resource recycling. By setting a preheating utilization mechanism, the hot gas in the pyrolysis and activation tank can be discharged through the flue gas pipe to preheat the resin material in the feed pipe, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pyrolysis and activation integrated machine for resin resource recycling, comprising:

[0006] The pyrolysis activation tank includes a feed pipe, a flue gas duct, and a preheating and utilization mechanism. The pyrolysis activation tank is connected to a flue gas duct on one side and has a feed pipe at the top. The preheating and utilization mechanism is installed on the surface of the feed pipe and is connected to the exhaust end of the flue gas duct. The preheating and utilization mechanism is used to utilize the hot flue gas discharged from the flue gas duct to preheat the resin material in the feed pipe.

[0007] The preheating and utilization mechanism includes a rotary pipe, an insulation frame, and a mounting bracket. The air inlet end of the rotary pipe is connected to the flue gas pipe and is sleeved on the surface of the feed pipe. The insulation frame is installed on the surface of the feed pipe and the rotary pipe, and the bottom is fixed to the top of the pyrolysis activation tank by several mounting brackets.

[0008] Preferably, the rotary pipe is spirally distributed on the surface of the feed pipe, and the exhaust end of the rotary pipe passes through the insulation frame and is connected to the external processor.

[0009] Preferably, a heat-conducting sleeve is fixedly installed on the surface of the feed pipe, the inner wall of the heat-conducting sleeve is tightly attached to the surface of the feed pipe, and a spiral groove for rotating pipe installation is opened on the outer surface.

[0010] Preferably, the feed pipe is provided with a conveying component, which includes a screw conveyor, a driver, a discharge valve pipe and a feed frame. The screw conveyor is rotatably installed in the feed pipe. The feed pipe is connected to the pyrolysis activation tank by a discharge valve pipe. The top of the feed pipe is connected to the feed frame, and the top of the feed frame is connected to external equipment.

[0011] Preferably, the top of the insulation frame is connected to a water supply valve pipe, and the bottom is connected to a drain valve pipe.

[0012] Preferably, the driver is a high-temperature resistant driver.

[0013] Preferably, the flue gas duct is configured as a heat-insulated pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, by setting up a preheating utilization mechanism, can discharge the hot gas in the pyrolysis activation tank through the flue gas pipe, preheat the resin material in the feed pipe, recover the hot flue gas in the pyrolysis activation tank, and preheat the resin in the feed pipe through the spiral rotating pipe, thereby improving energy utilization. The preheated resin shortens the pyrolysis cycle, speeds up single batch processing, is suitable for continuous operation scenarios, and can also reduce the temperature difference between the resin and the pyrolysis tank, thereby reducing thermal shock. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a perspective view of the preheating and utilization mechanism of this utility model;

[0018] Figure 3 This is a partial exploded perspective view of the structure of this utility model;

[0019] Figure 4 This is a perspective view of the conveyor component of this utility model.

[0020] In the diagram: 1. Pyrolysis activation tank; 2. Feed pipe; 3. Flue gas duct; 4. Preheating and utilization mechanism; 41. Rotary pipe; 42. Insulation frame; 43. Mounting frame; 5. Heat-conducting sleeve; 6. Spiral groove; 7. Conveying component; 71. Spiral conveyor paddle; 72. Driver; 73. Discharge valve pipe; 74. Feed frame; 8. Water supply valve pipe; 9. Drain valve pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an integrated pyrolysis and activation machine for resin resource recycling, comprising:

[0023] The pyrolysis activation tank 1, feed pipe 2, flue gas pipe 3 and preheating utilization mechanism 4 are connected to the flue gas pipe 3 on one side and the feed pipe 2 is provided on the top. The preheating utilization mechanism 4 is installed on the surface of the feed pipe 2 and is connected to the exhaust end of the flue gas pipe 3. The preheating utilization mechanism 4 is used to utilize the hot flue gas discharged from the flue gas pipe 3 to preheat the resin material in the feed pipe 2.

[0024] The preheating and utilization mechanism 4 includes a rotary pipe 41, an insulation frame 42, and a mounting bracket 43. The air inlet end of the rotary pipe 41 is connected to the flue gas pipe 3 and is sleeved on the surface of the feed pipe 2. The insulation frame 42 is installed on the surface of the feed pipe 2 and the rotary pipe 41, and the bottom is fixed to the top of the pyrolysis activation tank 1 by several mounting brackets 43.

[0025] Specifically, by setting up a preheating utilization mechanism 4, the hot gas in the pyrolysis activation tank 1 can be discharged through the flue gas pipe 3 to preheat the resin material in the feed pipe 2, recover the hot flue gas in the pyrolysis activation tank 1, and preheat the resin in the feed pipe 2 through the spiral rotating pipe 41, thereby improving energy utilization. The preheated resin shortens the pyrolysis cycle, speeds up single-batch processing, is suitable for continuous operation scenarios, and can also reduce the temperature difference between the resin and the pyrolysis tank, reduce thermal shock. Preheating allows the resin to release moisture and volatiles in advance, stabilizes the pyrolysis reaction, and has a compact structure that is compatible with a variety of resins and scenarios, contributing to environmental protection and emission reduction, and meeting the requirements of green production.

[0026] The rotary pipe 41 is spirally distributed on the surface of the feed pipe 2, and the exhaust end of the rotary pipe 41 passes through the insulation frame 42 and is connected to the external processor.

[0027] Furthermore, the rotary pipe 41 is made of 316L stainless steel with an inner diameter of 80-100mm. It is wound in a spiral shape with equal pitch around the surface of the feed pipe 2. The pitch is 1.5-2 times the outer diameter of the pipe. The air inlet end of the rotary pipe 41 is sealed to the exhaust end of the flue gas pipe 3 through a flange. The exhaust end passes through the insulation frame 42 and is connected to the external processor through a metal hose. The exhaust end is equipped with a temperature sensor. Compared with straight pipe heat exchange, the spiral structure increases the heat contact area by 2-3 times, solving the problem of low efficiency of traditional flue gas waste heat recovery.

[0028] A heat-conducting sleeve 5 is fixedly installed on the surface of the feed pipe 2. The inner wall of the heat-conducting sleeve 5 is tightly attached to the surface of the feed pipe 2, and a spiral groove 6 for the installation of the rotary pipe 41 is opened on the outer surface.

[0029] It is worth noting that the heat-conducting sleeve 5 is made of copper with a wall thickness of 3-5mm. It fits tightly with the feed pipe 2. The spiral groove 6 on the outer surface has a semi-circular cross-section and a groove depth of 1 / 3 of the outer diameter of the pipe. A 0.2mm thick nickel-based alloy gasket is provided in the groove. The high thermal conductivity of the copper sleeve can quickly transfer the heat of the rotary pipe 41. The nickel-based gasket prevents electrochemical corrosion caused by contact between the stainless steel pipe and the copper sleeve. The hot flue gas heats the gasket in the groove through the rotary pipe 41. The heat is transferred to the feed pipe 2 through the copper sleeve and the thermal grease. For high-temperature flue gas (>600℃) scenarios, the copper sleeve can be replaced with a composite sleeve of T2 copper coated with 1Cr18Ni9Ti, which maintains high thermal conductivity and improves high-temperature resistance.

[0030] The feed pipe 2 is equipped with a conveying component 7, which includes a screw conveyor 71, a driver 72, a discharge valve pipe 73 and a feed frame 74. The screw conveyor 71 is rotatably installed in the feed pipe 2. The feed pipe 2 is connected to the pyrolysis activation tank 1 by the discharge valve pipe 73. The top of the feed pipe 2 is connected to the feed frame 74, and the top of the feed frame 74 is connected to external equipment.

[0031] Furthermore, the screw conveyor 71 of the conveying component 7 adopts a double helical blade structure, the blade material is 1Cr18Ni9Ti, the pitch is 0.8 times the inner diameter of the feed pipe 2, and the gap between the blade edge and the inner wall of the feed pipe 2 is controlled at 1-2mm; the driver 72 is a servo motor, which can push the resin material towards the discharge valve pipe 73 while generating a tumbling motion, so that the resin is in full contact with the inner wall of the feed pipe 2, and the heating is more uniform. The preheating residence time of the resin in the feed pipe 2 is controlled at 8-10 minutes.

[0032] The top of the insulation frame 42 is connected to a water supply valve pipe 8, and the bottom is connected to a drain valve pipe 9;

[0033] Specifically, the insulation frame 42 adopts a composite structure of double-layer stainless steel plate sandwiched with aluminum silicate fiber cotton, and the double-layer insulation reduces heat loss; the softened water can absorb the radiant residual heat in the insulation frame 42, and after heating to 60-80℃, it is discharged through the drain valve pipe 9 as water for workshop cleaning or auxiliary heating. When the workshop needs heating in winter, the hot water discharged from the drain valve pipe 9 can be connected to the radiator.

[0034] Driver 72 is configured as a high-temperature resistant driver 72;

[0035] The motor housing of the high-temperature driver 72 is made of cast aluminum and coated with high-temperature resistant paint. The insulation class of the internal winding of the motor is H class. A 50mm thick aluminum silicate fiber heat insulation pad is provided between the driver 72 and the feed pipe 2. The bearing of the output shaft of the driver 72 is a high-temperature resistant ceramic bearing.

[0036] Flue gas duct 3 is configured as a heat insulation pipe;

[0037] Specifically, flue gas duct 3 adopts a three-layer composite structure, with an inner layer of 2mm thick nickel-based alloy, a middle layer of 50mm thick aluminum silicate fiber felt, and an outer layer of 1.5mm thick Q235B steel plate.

[0038] The pyrolysis activation tank 1 is the core reaction device of the integrated pyrolysis activation machine for resin resource recycling. Its main function is to cause waste resin to undergo pyrolysis and activation reactions at high temperatures in an oxygen-free or oxygen-deficient environment.

[0039] Its internal cavity structure is resistant to high temperatures and corrosion, capable of withstanding the high-temperature and high-pressure environment during resin pyrolysis, and is equipped with a heating system to maintain the reaction temperature. The tank may also contain stirring or airflow agitation components to ensure uniform heating of the resin and promote the breakdown of macromolecular chains into smaller molecules.

[0040] Furthermore, the pyrolysis activation tank 1, together with components such as the feed pipe 2 and the flue gas pipe 3, not only receives the preheated resin material but also guides the hot flue gas generated by the reaction to the preheating and utilization mechanism 4 through the flue gas pipe 3, realizing energy recycling. It is a key piece of equipment for completing the resource regeneration of resin.

[0041] The driver 72 and the pyrolysis activation tank 1 involved in this application are both implemented using existing mature technologies and are connected to an external PLC controller and power supply. This is a conventional technical means in this field, so their specific circuit connections, control logic and working process will not be described in detail.

[0042] In this device, hot gas from the pyrolysis activation tank 1 enters the rotary pipe 41 through the flue gas pipe 3. The rotary pipe 41 is equipped with a heat-conducting sleeve 5, and the surface of the heat-conducting sleeve 5 has spiral grooves 6 adapted to the rotary pipe 41, increasing the contact area between the rotary pipe 41 and the heat-conducting sleeve 5. This allows for better absorption of heat from the rotary pipe 41 onto the surface of the heat-conducting sleeve 5 and transfer to the feed pipe 2. Resin enters the feed pipe 2 through the feed frame 74 via external equipment. This external equipment includes a control valve to preheat the resin in the feed pipe 2. The surface of the feed pipe 2 is equipped with an insulation frame 42 to lock in heat and reduce heat loss. Water can be injected into the insulation frame 42 through the water supply valve pipe 8. Water can be heated and discharged through drain valve pipe 9 for use. The surface of the insulation frame 42 has a transparent window for easy observation of the interior. The top of the water supply valve pipe 8 can be opened under necessary conditions to prevent excessive pressure inside the insulation frame 42. The driver 72 can be started to drive the spiral agitator to rotate and discharge the preheated resin into the pyrolysis activation tank 1 through the discharge valve pipe 73. The bottom of the pyrolysis activation tank 1 is equipped with a valve pipe for discharging materials. The exhaust end of the rotary pipe 41 is connected to an external processor, which includes a refrigeration device and a filtration device. The refrigeration device cools the flue gas, and then the filtration device filters out harmful substances and impurities in the flue gas to ensure that the discharged flue gas meets the emission standards.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis and activation integrated machine for resin resource recycling, characterized in that, include: The pyrolysis activation tank (1), feed pipe (2), flue gas pipe (3) and preheating utilization mechanism (4) are provided. The pyrolysis activation tank (1) is connected to the flue gas pipe (3) on one side and the feed pipe (2) is provided on the top. The preheating utilization mechanism (4) is installed on the surface of the feed pipe (2) and is connected to the exhaust end of the flue gas pipe (3). The preheating utilization mechanism (4) is used to utilize the hot flue gas discharged from the flue gas pipe (3) to preheat the resin material in the feed pipe (2). The preheating and utilization mechanism (4) includes a rotary pipe (41), an insulation frame (42), and a mounting bracket (43). The air inlet end of the rotary pipe (41) is connected to the flue gas pipe (3) and is sleeved on the surface of the feed pipe (2). The insulation frame (42) is installed on the surface of the feed pipe (2) and the rotary pipe (41), and the bottom is fixed to the top of the pyrolysis activation tank (1) by several mounting brackets (43).

2. The integrated pyrolysis and activation machine for resin resource recycling according to claim 1, characterized in that: The rotary pipe (41) is spirally distributed on the surface of the feed pipe (2), and the exhaust end of the rotary pipe (41) passes through the insulation frame (42) and is connected to the external processor.

3. The integrated pyrolysis and activation machine for resin resource recycling according to claim 2, characterized in that: A heat-conducting sleeve (5) is fixedly installed on the surface of the feed pipe (2). The inner wall of the heat-conducting sleeve (5) is tightly attached to the surface of the feed pipe (2), and a spiral groove (6) for the installation of the rotary pipe (41) is opened on the outer surface.

4. The integrated pyrolysis and activation machine for resin resource recycling according to claim 1, characterized in that: The feed pipe (2) is equipped with a conveying component (7), which includes a screw conveyor (71), a driver (72), a discharge valve pipe (73), and a feed frame (74). The screw conveyor (71) is rotatably installed inside the feed pipe (2). The feed pipe (2) is connected to the pyrolysis activation tank (1) by a discharge valve pipe (73). The top of the feed pipe (2) is connected to the feed frame (74), and the top of the feed frame (74) is connected to external equipment.

5. The integrated pyrolysis and activation machine for resin resource recycling according to claim 1, characterized in that: The top of the insulation frame (42) is connected to a water supply valve pipe (8), and the bottom is connected to a drain valve pipe (9).

6. The integrated pyrolysis and activation machine for resin resource recycling according to claim 4, characterized in that: The driver (72) is configured as a high-temperature resistant driver (72).

7. The integrated pyrolysis and activation machine for resin resource recycling according to claim 1, characterized in that: The flue gas duct (3) is configured as a heat insulation pipe.

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