Agricultural and forestry waste biomass pyrolysis waste heat recycling device

Abstract

The embodiment of the present application provides a device for recycling the waste heat from the pyrolysis of agricultural and forestry waste biomass, which relates to the technical field of heat energy recovery from agricultural and forestry waste. The device for recycling the waste heat from the pyrolysis of agricultural and forestry waste biomass includes an outer box frame, the inner cavity of the outer box frame is provided with an inner box frame, and both sides of the top of the inner box frame are connected to a feeding hopper that penetrates and cooperates with the outer box frame, a circulation pipe is provided above the inner box frame, and the bottom end of the circulation pipe is connected to a buffer rack; the bottom end of the buffer rack is connected to a treatment cylinder that is embedded and cooperates with the inner box frame, and the outer box frame and the inner box frame are connected to heat supply pipes on all sides facing each other, the outer box frame is fixedly connected to a blast rack on all sides close to the buffer rack, and the bottom of the outer box frame is fixedly connected to a support frame, and the inner cavity of the buffer rack and the treatment cylinder are provided with an activation and impurity removal component. By combining activation and impurity removal with cyclone exchange, the waste heat is used to achieve an efficient drying pretreatment effect on the raw materials under controllable conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat energy recovery from agricultural and forestry wastes, and in particular relates to a device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass. Background Art

[0002] Agricultural and forestry waste refers to organic residues generated during agricultural production and forestry processing, including straw, rice husks, bark and other categories. It is mainly composed of cellulose and hemicellulose and is a renewable biomass resource. The recycling of waste heat during the pyrolysis of agricultural and forestry waste biomass is a core link to improve resource utilization efficiency, reduce energy consumption and carbon emissions. The high-temperature steam or gas generated by pyrolysis can be directly used for raw material drying pretreatment (such as dehydration of bamboo chips and straw, and drying of grains such as wheat and rice), replacing traditional fossil energy such as natural gas to form a closed-loop cycle.

[0003] In the prior art (Patent Application No. CN218530858U, Patent Name: Apparatus for Pyrolyzing Seaweed Using Waste Heat from Power Plant Boilers Based on Marine Biomass Energy Utilization), a one-way bearing is provided to allow the threaded rod to drive agitating blades during forward rotation to agitate the seaweed inside, improving pyrolysis efficiency. During reverse rotation, the threaded rod drives the loading frame upward, bringing the reaction products to the opening of the loading cylinder for easy collection. This improves the operating efficiency of the device and makes it easier for workers to collect the reactants. In the process of implementing this technical solution, it was discovered that the prior art has at least the following problems:

[0004] During the biomass pyrolysis reaction of agricultural and forestry waste, a large amount of heat is generated. In order to avoid wasting thermal energy resources, most of the waste heat in the pyrolysis process is directly extracted and reused for raw material drying pretreatment. Due to the high temperature of the waste heat, direct use can easily cause the raw material activity to decrease, deformation and damage, etc., which is not worth the cost. Summary of the Invention

[0005] This application aims to address at least one of the technical issues in the prior art, namely the inability to achieve efficient drying pretreatment of raw materials under controllable conditions using waste heat by combining activation and impurity removal with cyclone exchange. To this end, this application proposes a device for recycling waste heat from the pyrolysis of agricultural and forestry waste biomass.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass includes an outer box frame, an inner box frame is provided in the inner cavity of the outer box frame, and both sides of the top of the inner box frame are connected to a feeding hopper that penetrates and cooperates with the outer box frame, a circulation pipe is provided above the inner box frame, and the bottom end of the circulation pipe is connected to a buffer rack;

[0008] The bottom end of the buffer rack is connected to a processing cylinder embedded in the inner box rack, and the outer box rack and the inner box rack are connected to heat pipes on all sides. The outer box rack is fixedly connected to a blast rack on all sides near the buffer rack, and the bottom of the outer box rack is fixedly connected to a support frame;

[0009] The inner cavity of the cache rack and the processing cylinder is provided with an activated impurity removal component, and the activated impurity removal component includes a servo motor embedded in the bottom of the support frame; the inner cavity of the inner box rack is provided with a swirl exchange component, and the swirl exchange component includes a main gear fixed on the output shaft of the servo motor.

[0010] Preferably: the activation and impurity removal component also includes a reciprocating screw fixed on the top of the servo motor output shaft, and a sliding frame is slidably connected in the processing cylinder, the inner cavity of the sliding frame is fixedly connected to a lifting column, and the inner cavity of the lifting column is provided with a screw groove that cooperates with the reciprocating screw thread, and the inner cavity of the sliding frame is fixedly connected with a fine screen plate, a filter plate and a filter screen in sequence from top to bottom.

[0011] Preferably: the swirl exchange assembly also includes a slave gear meshed around the main gear, and the inner cavity of the slave gear is fixedly connected to a hollow tube that rotatably cooperates with the support frame, the outer box frame and the inner box frame, the top of the hollow tube is provided with an exhaust fan used in conjunction with the blower frame, and the top end of the hollow tube is connected to a connecting end, the connecting end is rotatably connected to a rotating end and maintains a state of mutual communication with each other, and the top end of the rotating end is connected to an electric control valve, and the outer end of the electric control valve is connected to an air supply pipe that communicates and cooperates with the blower frame.

[0012] Preferably, plugging heads for adding catalyst are provided on all four sides of the top of the cache rack, and a coarse sieve plate is embedded in the inner cavity of the cache rack.

[0013] Preferably, an interlayer cavity is provided between the outer box frame and the inner box frame, and a flow equalizing plate communicating with the interlayer cavity is embedded on the top of each of the four sides of the inner box frame, and the flow equalizing holes on the flow equalizing plate are designed to be tilted downward.

[0014] Preferably, both ends of the hollow tube are provided with injection ports in a vertical array and are designed in a strip shape, and the other two ends of the hollow tube are diagonally connected to mixing rods, and the mixing rods are provided with injection holes on the circumference for use with the injection ports.

[0015] Preferably, the four ends of the hollow tube close to the heat delivery tube are fixedly connected to material guide racks and adopt a streamlined design, and a temperature sensor is embedded in the inner end of the electric control valve.

[0016] Preferably, a fine mesh for air intake is embedded on the outer side of the blower frame, and a heat-insulating sleeve for heat-insulating the interlayer cavity is provided on the outer side of the outer box frame.

[0017] Preferably, the outer box frame is connected to rectangular tubes on all sides thereof which are connected to and matched with the interlayer cavity and are designed with a one-way valve, and the outer end of the rectangular tube is connected to a heat storage tank which is fixedly matched with the outer box frame.

[0018] Preferably, both sides of the bottom of the inner box frame penetrate the outer box frame and are connected to a discharge pipe with a one-way valve, and both sides of the bottom of the processing cylinder are connected to a waste discharge pipe with a one-way valve.

[0019] The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass of the present invention has the following advantages:

[0020] 1. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass first opens the sealing head to add a catalyst into the buffer rack, and injects the pyrolysis gas generated by the pyrolysis waste heat into the buffer rack through the circulation pipe. The catalyst catalytically activates the solid impurities falling on the coarse screen plate, activates and precipitates the heat in the solid impurities, and is driven by a servo motor to rotate the reciprocating screw rod, which drives the lifting column to perform a reciprocating lifting movement through the screw rod groove. The lifting column drives the fine screen plate, filter plate and filter mesh on the sliding rack to further lift and filter the pyrolysis gas and catalyst arriving in the treatment cylinder, and filters the solid impurities in the pyrolysis gas step by step. The fully obtained waste heat of the pyrolysis gas is then transported to the interlayer cavity in different areas through four heat delivery pipes, and then reaches the inner box rack through four groups of flow equalizing plates with downwardly inclined equalizing holes. The waste heat is used to dry and pre-treat the material in the inner box rack to avoid turbulence while also improving the precipitation sufficiency, purity and effective utilization rate of the waste heat from pyrolysis of agricultural and forestry waste biomass.

[0021] 2. The agricultural and forestry waste biomass pyrolysis waste heat recycling device, then, first, the servo motor drives the four groups of slave gears on the main gear to rotate, and the four groups of slave gears drive the exhaust fans on the four hollow tubes to rotate accordingly, and force the connecting ends on the four hollow tubes to rotate synchronously in the four groups of rotating ends and maintain an interconnected state. At the same time, the four exhaust fans rotating in the blower frame will supply the clean gas filtered by the fine mesh into the four hollow tubes in turn through the air supply pipe and the electric control valve through the rotating end and the connecting end. The clean gas is then ejected from the injection port to exchange heat with the electrolytic gas waste heat in the inner box frame to prevent the electrolytic gas waste heat from being too high and causing damage to the material. At the same time, the four hollow tubes also drive the mixing rod to evenly mix the material in the inner box frame, so that the appropriate waste heat is fully in contact with the material. The clean gas in the four hollow tubes is also ejected from the injection holes on the four groups of mixing rods, further improving the heat exchange between the electrolytic gas waste heat and the clean gas in the inner box frame, and improving the utilization of the electrolytic gas waste heat.

[0022] 3. The agricultural and forestry waste biomass pyrolysis waste heat recycling device, then, when the electrolytic gas waste heat is excessive and needs to be stored, the four sets of slave gears first drive the double-sided gear ring to rotate linearly, and the four sets of tensioning wheels act as a limit transmission for the synchronous belt. Then, the double-sided gear ring drives the four sets of synchronous wheels to rotate synchronously through the synchronous belt in the synchronous belt groove. The four sets of synchronous wheels drive the stirring blades through the four rotating shafts to stir the excess electrolytic gas waste heat discharged into the heat storage tank in one direction through the rectangular tube and the clean water added in advance. , so that the excess waste heat of electrolytic gas is fully mixed with clean water and heated to hot water state, and the clean water at room temperature is converted into hot water to store the excess waste heat of electrolytic gas. At the same time, the temperature probe is used to monitor the water temperature in the heat storage tank in real time so that the hot water after energy storage can be used for other purposes to avoid the waste of waste heat of electrolytic gas. At the same time, detergent can also be added to the heat storage tank. After the stirring blade stirs the clean hot water to obtain clean hot water, it is respectively injected into the inner box frame and the treatment cylinder through the feeding hopper and the circulation pipe to provide clean water source, thus achieving multiple uses in one go. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of the device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to the present invention;

[0026] Figure 3 This is an internal view of the structure of the device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to the present invention;

[0027] Figure 4 This is a bottom view of the structure of the agricultural and forestry waste biomass pyrolysis waste heat recycling device of the present invention;

[0028] Figure 5 This is a bottom view of the outer box frame, processing cylinder and servo motor structure of the present invention;

[0029] Figure 6 It is a cross-sectional view of the structure of the treatment cylinder and the activation and impurity removal component of the present invention;

[0030] Figure 7 A side view of the activation and impurity removal component structure of the present invention;

[0031] Figure 8It is a partial bottom-up cross-sectional view of the activation impurity removal component structure of the present invention;

[0032] Figure 9 This is a cross-sectional view of the outer box frame and inner box frame structure of the present invention;

[0033] Figure 10 A side view of the structure of the blower frame, servo motor and swirl exchange assembly of the present invention;

[0034] Figure 11 A partial side view of the servo motor and swirl exchange assembly structure of the present invention;

[0035] Figure 12 It is a top cross-sectional view of the blower frame and swirl exchange assembly structure of the present invention;

[0036] Figure 13 It is a partial cross-sectional exploded view of the cyclone exchange component structure of the present invention;

[0037] Figure 14 A top view of the rectangular tube, heat storage tank, and heat storage assembly structure of the present invention;

[0038] Figure 15 This is a top view of the heat storage component structure of the present invention.

[0039] Explanation of the markings in the figure: 1. Outer box frame; 2. Inner box frame; 3. Feeding hopper; 4. Circulation pipe; 5. Buffer rack; 6. Processing cylinder; 7. Heat supply pipe; 8. Blower rack; 9. Support frame; 101. Servo motor; 102. Reciprocating screw; 103. Screw slot; 104. Lifting column; 105. Sliding rack; 106. Fine screen; 107. Filter plate; 108. Filter screen; 111. Main gear; 112. Slave gear; 113. Hollow pipe; 114. Exhaust fan; 115. Connecting end; 116. Rotating end; 117. Electric control valve ;118. Air supply pipe;121. Double-sided gear ring;122. Synchronous belt groove;123. Synchronous belt;124. Synchronous pulley;125. Tensioning pulley;126. Rotating shaft;127. Mixing blade;128. Temperature probe;13. Sealing head;14. Coarse screen plate;15. Interlayer cavity;16. Flow equalizing plate;17. Injection port;18. Mixing rod;19. Injection hole;20. Material guide rack;21. Temperature sensor;22. Fine mesh;23. Insulation sleeve;24. Rectangular tube;25. Heat storage tank;26. Discharge pipe;27. Waste discharge pipe. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0041] like Figures 1-15As shown, the agricultural and forestry waste biomass pyrolysis waste heat recycling device of the present invention includes an outer box frame 1, the inner cavity of the outer box frame 1 is provided with an inner box frame 2, and both sides of the top of the inner box frame 2 are connected with a feeding hopper 3 that penetrates and cooperates with the outer box frame 1, a circulation pipe 4 is provided above the inner box frame 2, and the bottom end of the circulation pipe 4 is connected with a buffer rack 5; the bottom end of the buffer rack 5 is connected with a treatment cylinder 6 that is embedded and cooperates with the inner box frame 2, both sides of the bottom of the inner box frame 2 penetrate the outer box frame 1 and are connected with a discharge pipe 26 with a one-way valve, which is convenient for discharging materials in the inner box frame 2, and both sides of the bottom of the treatment cylinder 6 are connected with a waste discharge pipe 27 with a one-way valve, which is convenient for discharging waste residues in the treatment cylinder 6, and the outer box frame 1 and the inner box frame 2 are surrounded by each other. They are all connected with heat supply pipes 7, and the outer box frame 1 is fixedly connected with a blast rack 8 on all sides near the buffer rack 5. The outer side of the blast rack 8 is embedded with a fine mesh 22 for air intake to filter the outside air, and the outer side of the outer box frame 1 is provided with an insulation sleeve 23 for heat preservation of the interlayer cavity 15, which has a heat preservation effect on the outer box frame 1, and the bottom of the outer box frame 1 is fixedly connected with a support frame 9. The outer box frame 1 is connected with a rectangular tube 24 communicating with the interlayer cavity 15 on all sides and has a one-way valve design, and the outer end of the rectangular tube 24 is connected with a heat storage tank 25 fixed with the outer box frame 1, so that the excess electrolytic gas waste heat can be unidirectionally supplied to the four groups of heat storage tanks 25 through the rectangular tube 24 to avoid waste of excessive electrolytic gas waste heat;

[0042] The inner cavity of the cache rack 5 and the processing barrel 6 is provided with an activation impurity removal component, and the activation impurity removal component includes a servo motor 101 embedded in the bottom of the support frame 9, which further performs a lifting and filtering reaction on the pyrolysis gas and catalyst reaching the processing barrel 6, and filters the solid impurities in the pyrolysis gas step by step, thereby improving the precipitation sufficiency, purity and effective utilization rate of the pyrolysis waste heat of agricultural and forestry waste biomass. The inner cavity of the inner box frame 2 is provided with a cyclone exchange component, and the cyclone exchange component includes a main gear 111 fixed on the output shaft of the servo motor 101. The clean gas is then ejected from the injection port 17 for heat exchange treatment with the electrolysis gas waste heat in the inner box frame 2 to prevent the electrolysis gas waste heat temperature from being too high and causing damage to the material.

[0043] like Figure 5-Figure 13As shown, the activation and impurity removal component also includes a reciprocating screw 102 fixed on the top of the output shaft of the servo motor 101. The sealing head 13 is opened to add a catalyst into the buffer rack 5, and the pyrolysis gas generated by the pyrolysis waste heat is injected into the buffer rack 5 through the circulation pipe 4. The catalyst catalytically activates the solid impurities falling on the coarse screen plate 14, activates the heat in the solid impurities and precipitates them. The servo motor 101 drives the reciprocating screw 102 to rotate, and a sliding rack 105 is slidably connected to the processing cylinder 6. The inner cavity of the sliding rack 105 is fixedly connected to the lifting column 104, and the lifting column 104 is fixedly connected to the inner cavity of the sliding rack 105. The inner cavity of the lowering column 104 is provided with a screw groove 103 that is threadedly matched with the reciprocating screw 102. The inner cavity of the sliding frame 105 is fixedly connected with a fine screen plate 106, a filter plate 107 and a filter screen 108 in sequence from top to bottom. The reciprocating screw 102 drives the lifting column 104 to move up and down through the screw groove 103. The lifting column 104 drives the fine screen plate 106, the filter plate 107 and the filter screen 108 on the sliding frame 105 to further lift and filter the pyrolysis gas and catalyst arriving in the treatment cylinder 6, and filter the solid impurities in the pyrolysis gas step by step.

[0044] The top of the cache rack 5 is provided with sealing heads 13 for adding catalysts on all sides, which is convenient for adding the catalyst used for activation into the cache rack 5, and activating and precipitating the heat carried by the solid impurities in the electrolytic gas waste heat added to the cache rack 5, and the inner cavity of the cache rack 5 is embedded with a coarse screen plate 14 to intercept the large-volume solid impurities in the electrolytic gas waste heat, and an interlayer cavity 15 is provided between the outer box frame 1 and the inner box frame 2, so that the treated electrolytic gas waste heat can reach the interlayer cavity 15 through the heat supply pipe 7. At the same time, since the outer box frame 1 and the inner box frame 2 adopt a two-layer design, the outer box frame 1 plays the role of inner layer insulation for the inner box frame 2, and the top of the inner box frame 2 is embedded with a flow equalizing plate 16 that is connected to the interlayer cavity 15. The flow equalizing holes on the flow equalizing plate 16 are designed to be tilted downward. The electrolytic gas waste heat reaching the interlayer cavity 15 is delivered to the inner box frame 2 through the flow equalizing plate 16 with a downward tilted flow equalizing hole, so as to pre-dry the material therein.

[0045] The swirl exchange assembly also includes a slave gear 112 meshed around the main gear 111, and the servo motor 101 drives the four groups of slave gears 112 on the main gear 111 to rotate, and the inner cavity of the slave gear 112 is fixedly connected to a hollow tube 113 that rotates with the support frame 9, the outer box frame 1 and the inner box frame 2. The top of the hollow tube 113 is provided with an exhaust fan 114 used in conjunction with the blower frame 8. The four groups of slave gears 112 drive the exhaust fans 114 on the four hollow tubes 113 to rotate accordingly, and the top end of the hollow tube 113 is connected to a connecting end 115, and the connecting end 115 is rotatably connected to the rotating end 116 and maintains a mutual communication state with each other. The four groups of slave gears 112 also The connecting ends 115 on the four hollow tubes 113 are driven to rotate synchronously in the four sets of rotating ends 116 and maintain an interconnected state. The top of the rotating end 116 is connected to an electric control valve 117. The outer end of the electric control valve 117 is connected to an air supply pipe 118 that is connected and coordinated with the blast rack 8. The four exhaust fans 114 rotating in the blast rack 8 supply the clean gas filtered by the fine mesh 22 into the four hollow tubes 113 in sequence through the air supply pipe 118 and the electric control valve 117 through the rotating end 116 and the connecting end 115. The clean gas is then ejected from the injection port 17 to perform heat exchange treatment with the waste heat of the electrolytic gas in the inner box frame 2 to prevent the waste heat of the electrolytic gas from being too high and causing damage to the material.

[0046] Both ends of the hollow tube 113 are provided with a vertical array of injection ports 17 and are designed in a strip shape, which is conducive to the ejection of clean gas in the hollow tube 113, and plays a role in efficient heat exchange between the electrolytic gas waste heat and the clean gas. In addition, the other two ends of the hollow tube 113 are diagonally connected with a mixing rod 18, which plays a mixing role for the material in the inner box frame 2, so that the material and the electrolytic gas waste heat are fully contacted. The mixing rod 18 is provided with a spray hole 19 used in conjunction with the injection port 17 on the circumference of the hollow tube 113. The clean gas in 13 is ejected through the injection hole 19 on the mixing rod 18, which plays an auxiliary heat exchange role between the waste heat of the electrolytic gas and the clean gas, so as to prevent the waste heat of the electrolytic gas from being too high and causing damage to the material. The four ends of the hollow tube 113 close to the heat delivery pipe 7 are fixedly connected with the guide rack 20 and adopt a streamlined design, which is conducive to the uniform discharge of the material after drying treatment, and the inner end of the electric control valve 117 is embedded with a temperature sensor 21 to monitor the stability of the gas temperature reaching the electric control valve 117.

[0047] like Figure 14-15As shown, during the drying pretreatment of materials using the electrolytic gas waste heat generated by the pyrolysis of agricultural and forestry waste biomass, if the electrolytic gas waste heat generated is excessive, most of it is directly discharged, resulting in a waste of electrolytic gas waste heat, and the excess electrolytic gas waste heat cannot be stored for other uses. A heat storage component for converting excess electrolytic gas waste heat into energy storage is provided in the heat storage tank 25, and the heat storage component includes a double-sided gear ring 121 meshed with the outer side of the four sets of slave gears 112 and rotating with the support frame 9, and the outer ring of the double-sided gear ring 121 is provided with a ring The synchronous belt groove 122 is connected to a synchronous wheel 124 that rotates with the support frame 9 through a synchronous belt 123, and both sides of the synchronous belt 123 near the synchronous wheel 124 are connected to a tensioning wheel 125 that rotates with the support frame 9. The four sets of slave gears 112 drive the double-sided gear ring 121 to rotate linearly, and the four sets of tensioning wheels 125 act as a limit transmission for the synchronous belt 123. Under the cooperation, the double-sided gear ring 121 drives the four sets of synchronous wheels 124 to rotate synchronously with the synchronous belt 123 in the synchronous belt groove 122;

[0048] The synchronous wheel 124 is fixedly connected to a stirring blade 127 that rotates with the heat storage tank 25 through a rotating shaft 126, and the water inlet and drain outlet of the heat storage tank 25 are respectively provided with a water adding plug and a drain plug, and the water adding plug is embedded with a temperature probe 128 for monitoring the water temperature in the heat storage tank 25. The four sets of synchronous wheels 124 drive the stirring blades 127 through the four rotating shafts 126 to stir the excess electrolytic gas waste heat discharged into the heat storage tank 25 in one direction through the rectangular tube 24 and the clean water added in advance, so that the excess electrolytic gas The waste heat from electrolysis is fully mixed with clean water and heated to a hot water state. Clean water at room temperature is converted into hot water to store excess waste heat from electrolysis gas. At the same time, the temperature probe 128 monitors the water temperature in the heat storage tank 25 in real time so that the stored hot water can be used for other purposes to avoid wasting waste heat from electrolysis gas. At the same time, detergent can also be added to the heat storage tank 25. After the stirring blade 127 stirs the hot water to obtain clean hot water, it is injected into the inner box frame 2 and the treatment cylinder 6 through the feeding hopper 3 and the circulation pipe 4 respectively to provide a clean water source, thus achieving multiple uses in one go.

[0049] The working principle of the waste heat recycling device for pyrolysis of agricultural and forestry waste biomass is as follows: first, open the sealing head 13 to add the catalyst into the buffer rack 5, then add the materials to be pre-treated into the inner box rack 2 through the two feeding hoppers 3, and inject the waste heat of the electrolysis gas generated by the pyrolysis of agricultural and forestry waste biomass into the buffer rack 5 through the circulation pipe 4 with pressure, so that the solid impurities in the waste heat of the electrolysis gas react with the catalyst in advance to undergo catalytic activation reaction, and then the large-volume solid impurities are intercepted by the coarse screen plate 14, and the waste heat of the electrolysis gas in the catalytic activation state reaches the processing cylinder 6, and the servo motor 101 is controlled to start and drive the reciprocating screw 102 to rotate, and the reciprocating screw 102 drives the sliding frame on the lifting column 104 through the screw slot 103 105 then moves up and down in the treatment cylinder 6 in a reciprocating manner, and the solid impurities in the electrolytic gas waste heat that remain on the sliding frame 105 continue to undergo catalytic activation reaction, and the sliding frame 105 drives the fine screen plate 106, the filter plate 107 and the filter screen 108 to remove the solid impurities carried in the electrolytic gas waste heat that reaches the treatment cylinder 6 in the state of secondary catalytic activation reaction step by step, which not only activates and precipitates the waste heat carried by the solid impurities, but also improves the cleanliness of the electrolytic gas waste heat, and is supplied to the interlayer cavity 15 reserved between the outer box frame 1 and the inner box frame 2 through the four heat supply pipes 7, and then evenly reaches the inner box frame 2 through the four groups of equal flow holes 16 tilted downward, and uses the waste heat to perform drying pretreatment on the material;

[0050] At the same time, the servo motor 101 drives the main gear 111 to rotate, and the main gear 111 drives the hollow tubes 113 on the four groups of slave gears 112 to rotate accordingly. The four hollow tubes 113 drive the four groups of exhaust fans 114 to rotate synchronously in the four groups of blower racks 8, and generate negative pressure suction. Under the action of the negative pressure suction, the clean gas obtained after the outside air is filtered by the fine mesh 22 is supplied into the air supply pipe 118 through the blower rack 8, and then supplied into the four hollow tubes 113 through the rotating end 116 and the connecting end 115 on the electric control valve 117 in turn. The clean gas is then evenly ejected from the injection port 17 on the four hollow tubes 113. At the same time, the clean gas in the four hollow tubes 113 also passes through the injection hole on the mixing rod 18 19 assists in ejecting, forcing the clean gas to evenly and quickly exchange heat with the residual heat of the electrolytic gas reaching the inner box frame 2, and the temperature is monitored by the temperature sensor 21 on the electric control valve 117 to prevent the residual heat of the electrolytic gas in the inner box frame 2 from overheating and damaging the material. At the same time, the four hollow tubes 113 drive the mixing rod 18 to evenly mix the material in the inner box frame 2 and fully contact the electrolytic gas heat source. During this period, the outer layer of the outer box frame 1 is always insulated by the insulation sleeve 23, and the inner layer of the outer box frame 1 is insulated by the inner box frame 2 until the material is fully dried, and the four hollow tubes 113 drive the guide frame 20 to rotate and guide the dried material to the discharge pipe 26 area for discharge;

[0051] When the electrolytic gas waste heat generated by the pyrolysis of agricultural and forestry waste biomass is excessive, the excess electrolytic gas waste heat in the interlayer cavity 15 is first fed into the four sets of heat storage tanks 25 in a unidirectional manner through the four rectangular tubes 24, and then the water plug is opened to inject clean water into the four sets of heat storage tanks 25, and the four sets of slave gears 112 drive the double-sided gear ring 121 to rotate linearly in the support frame 9, and under the transmission cooperation of the four sets of tensioning wheels 125 to the synchronous belt 123, the double-sided gear ring 121 drives the four sets of synchronous wheels 124 to rotate accordingly through the synchronous belt 123 in the synchronous belt groove 122, and the four sets of synchronous wheels 124 drive the stirring blades 12 through the four rotating shafts 126. 7 rotates in the four groups of heat storage tanks 25, mixes the excess electrolytic gas waste heat and the clean water therein, and quickly absorbs heat to convert the clean water at room temperature into hot water, converts the excess electrolytic gas waste heat into energy, and uses the temperature probe 128 to monitor the water temperature in the four groups of heat storage tanks 25 in real time. The hot water converted and stored in energy can be used for other purposes. Detergent can also be added to the four groups of heat storage tanks 25, and the four stirring blades 127 mix the hot water and detergent in the four groups of heat storage tanks 25 to obtain clean hot water, which is respectively injected into the inner box frame 2 and the treatment cylinder 6 through the feeding hopper 3 and the circulation pipe 4 to provide a clean water source, thus achieving multiple uses in one go.

[0052] It should be noted that the specific models and specifications of the servo motor 101, sensors and various valves need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be detailed again.

[0053] The servo motor 101 and the power supply circuits of the sensors and various valves are clear to those skilled in the art and will not be described in detail here.

[0054] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass, including an outer box frame, characterized by: The inner cavity of the outer box frame is provided with an inner box frame, and both sides of the top of the inner box frame are connected to a feeding hopper that penetrates and cooperates with the outer box frame. A circulation pipe is provided above the inner box frame, and the bottom end of the circulation pipe is connected to a buffer rack; The bottom end of the buffer rack is connected to a processing cylinder embedded in the inner box rack, and the outer box rack and the inner box rack are connected to heat pipes on all sides. The outer box rack is fixedly connected to a blast rack on all sides near the buffer rack, and the bottom of the outer box rack is fixedly connected to a support frame; The inner cavity of the cache rack and the processing cylinder is provided with an activated impurity removal component, and the activated impurity removal component includes a servo motor embedded in the bottom of the support frame, the inner cavity of the inner box frame is provided with a swirl exchange component, and the swirl exchange component includes a main gear fixed on the output shaft of the servo motor, the activated impurity removal component also includes a reciprocating screw fixed on the top of the output shaft of the servo motor, and a sliding rack is slidably connected in the processing cylinder, the inner cavity of the sliding rack is fixedly connected to a lifting column, and the inner cavity of the lifting column is provided with a screw groove that matches the reciprocating screw thread, the inner cavity of the sliding rack From top to bottom, a fine screen plate, a filter plate and a filter screen are fixedly connected in sequence. The swirl exchange assembly also includes a slave gear meshed around the main gear, and the inner cavity of the slave gear is fixedly connected to a hollow tube that rotates with the support frame, the outer box frame and the inner box frame. The top of the hollow tube is provided with an exhaust fan used in conjunction with the blower frame, and the top end of the hollow tube is connected to a connecting end, and a rotating end is rotatably connected to the connecting end and maintains a state of mutual communication with each other, and the top end of the rotating end is connected to an electric control valve, and the outer end of the electric control valve is connected to an air supply pipe that communicates with the blower frame.

2. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 1, characterized in that: The top of the cache rack is provided with plugging heads for adding catalysts on all four sides, and the inner cavity of the cache rack is embedded with a coarse screen plate.

3. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 2, characterized in that: An interlayer cavity is provided between the outer box frame and the inner box frame, and a flow equalizing plate communicating with the interlayer cavity is embedded on the top of each of the four sides of the inner box frame, and the flow equalizing holes on the flow equalizing plate are designed to be tilted downward.

4. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 3, characterized in that: Both ends of the hollow tube are provided with injection ports in a vertical array and are designed in a strip shape, and the other two ends of the hollow tube are diagonally connected to mixing rods, and the mixing rods are provided with injection holes on the circumference for use with the injection ports.

5. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 4, characterized in that: The four ends of the hollow tube close to the heat delivery tube are all fixedly connected with material guide racks and adopt a streamlined design, and a temperature sensor is embedded in the inner end of the electric control valve.

6. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 5, characterized in that: The outer side of the blast rack is embedded with a fine mesh for air intake, and the outer side of the outer box rack is covered with a heat-insulating sleeve for heat-insulating the interlayer cavity.

7. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 6, characterized in that: The outer box frame is connected to rectangular tubes on all sides that are connected to the interlayer cavity and have a one-way valve design, and the outer end of the rectangular tube is connected to a heat storage tank that is fixedly matched with the outer box frame.

8. The device for recycling waste heat from pyrolysis of agricultural and forestry waste biomass according to claim 7, characterized in that: Both sides of the bottom of the inner box frame penetrate the outer box frame and are connected to a discharge pipe with a one-way valve, and both sides of the bottom of the processing cylinder are connected to a waste discharge pipe with a one-way valve.

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