Carbonization furnace for preparing activated carbon and straw biomass fuel

Abstract

The invention provides a carbonization furnace for preparing activated carbon and straw biomass fuel, and relates to the technical field of carbonization furnaces. The carbonization furnace for preparing the activated carbon and straw biomass fuel comprises a fuel base, the upper end of the fuel base is fixedly connected with a combustion bin, the surface of the combustion bin is slidably connected with a sealing cover, the upper end of the combustion bin is fixedly connected with a carbonization shell, the outer surface of the carbonization shell is fixedly connected with a lifting motor, and the output end of the lifting motor is fixedly connected with a synchronous tooth set. The surface of the synchronous tooth group is connected with a lifting shaft, and the inner side of the carbonization shell is slidably connected with a lifting inner shell. According to the carbonization furnace for preparing the activated carbon and straw biomass fuel, a secondary ignition mechanism is arranged at a smoke discharging position, so that discharged materials of the carbonization furnace can pass an ignition test, the discharged materials are sufficiently combusted, discharged harmful gas is reduced, the effect of sufficiently combusting and reducing the discharge of the harmful gas is achieved, and the problems that the carbonization furnace discharges too much smoke, and the environment is polluted are solved. And a large amount of harmful gas exists inside.

Description

Technical Field

[0001] The invention relates to the technical field of carbonization furnaces, in particular to a carbonization furnace for preparing activated carbon and straw biomass fuel. Background Art

[0002] With the continuous progress of science and technology and the rapid development of rural economy, the total amount and types of various agricultural and forestry residues, including crop straw, have increased significantly. The efficient treatment and resource utilization of agricultural and forestry residues have become a problem restricting the sustainable development of agriculture. Biomass carbonization technology is an emerging technology for the resource utilization of agricultural and forestry residues in recent years. It can carbonize agricultural and forestry residues and store them in the form of stable solid substances. The prepared biochar has the characteristics of large specific surface area, developed pore structure, high stability and strong adsorption capacity.

[0003] Through searching, Chinese patent announcement No. CN115197729A discloses a biomass carbonization furnace, which includes a furnace shell, a steam component, a catalyst component and auxiliary parts, wherein the furnace shell is vertically arranged, and a material bin is formed inside the furnace shell, the steam component is arranged on the furnace shell for heating the material in the material bin, the catalyst component is arranged on the furnace shell and is vertically spaced from the steam component for releasing the catalyst into the material bin, and the auxiliary parts are movably inserted in the material bin, thereby, by arranging the auxiliary parts, a separation space for biomass charcoal can be reserved, which is beneficial to the charcoal taking operation of the biomass charcoal, promotes the falling of the biomass charcoal, and improves the charcoal taking efficiency of the carbonization furnace.

[0004] With respect to the above-mentioned related technologies, it is believed that the following defects exist: 1. Traditional carbonization furnaces will produce a lot of smoke and heat during combustion. In a closed space, a lot of smoke and heat will be produced, and a lot of unburned gas and harmful gas will appear at the same time. Therefore, it is necessary to deal with it in time to reduce the emission of these gases.

[0005] 2. The carbonization furnace needs to be replenished with fuel in time during the carbonization process to keep the temperature inside the carbonization furnace at all times. The traditional carbonization furnace has the problem of needing to continuously refill fuel and being unable to fully utilize the fuel.

[0006] 3. The traditional carbonization furnace will have uneven heating, which will lead to excessive carbonization of soft materials such as straw during the carbonization of mixed materials. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a carbonization furnace for preparing activated carbon and straw biomass fuel, which solves the problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a carbonization furnace for preparing activated carbon and straw biomass fuel, comprising a fuel base, a combustion chamber fixedly connected to the upper end of the fuel base, a sealing cover slidably connected to the surface of the combustion chamber, a carbonization shell fixedly connected to the upper end of the combustion chamber, a lifting motor fixedly connected to the outer surface of the carbonization shell, a synchronous gear set fixedly connected to the output end of the lifting motor, a lifting shaft connected to the surface of the synchronous gear set, a lifting inner shell slidably connected to the inner side of the carbonization shell, and the lifting shaft is in contact with the lifting inner shell; The inner side of the lifting inner shell is rotatably connected with a carbonization cylinder, the carbonization cylinder is connected with a gas collecting assembly, the end of the gas collecting assembly away from the carbonization cylinder is connected with a withdrawal shell, the outer side of the withdrawal shell is connected with a withdrawal mechanism, the upper end of the withdrawal shell is connected with an air return pipe, the lower end of the air return pipe is connected with an air release pipe, and the withdrawal shell is slidably connected with the carbonization shell; A cover plate is provided at the upper end of the carbonization shell, a long through hole is provided at the top of the cover plate, a tempering bin is fixedly connected to the upper end of the carbonization shell, the tempering bin covers the outside of the long through hole of the carbonization shell, a connecting pipe is slidably connected to the end face of the tempering bin, a lifting extension shell is clamped on the end face of the connecting pipe, a guide pipe is sleeved on the outside of the lifting extension shell, a side of the guide pipe close to the carbonization cylinder is connected to a tempering core pipe, the tempering core pipe runs through the carbonization cylinder, a secondary ignition mechanism is provided at one end of the tempering core pipe close to the guide pipe, and a guide fan is fixedly connected to the outside of the guide pipe; A turnover mechanism is arranged on the outer side of the extraction shell, a turnover gear ring is meshed on the surface of the turnover mechanism, and the turnover gear ring is connected with the carbonization cylinder.

[0009] Preferably, the carbonization cylinder includes an outer enclosure shell, a side end cover and an empty bin, the outer enclosure shell is divided into an upper enclosure shell and a lower enclosure shell, the end faces of the upper enclosure shell and the lower enclosure shell are both arc-shaped and together form a cylindrical shape, one end of the upper enclosure shell is hinged to the lower enclosure shell, and the other end is clamped, the side end cover is fixedly connected to the two ends of the lower enclosure shell, the tempering core tube passes through the center of the side end cover, a pipe is provided at the center of the end face of the side end cover, the pipe is on the outside of the tempering core tube, the empty bin is composed of four sections of empty shells with different arc lengths, the overall shape of the empty bin is cylindrical, the empty bin is provided on the inner side of the outer enclosure shell, the four sections of the empty bin are divided into four parts: upper, lower, left and right, the left, right and lower empty bins are all connected to the inner wall of the lower enclosure shell, the upper empty bin is connected to the inner side of the upper enclosure shell, and the inner side of the cavity of the empty bin is provided with a through groove that passes through the inner wall.

[0010] Preferably, one end of the gas collecting assembly is a gas collecting combination pipe and the other end is a docking ring. One end of the gas collecting combination pipe is respectively connected to the four empty bins, and the other end is connected to the docking ring. The docking ring is sleeved on the outside of the pipeline arranged in the center of the end face of the side end cover, and the docking ring is connected to the extraction shell.

[0011] Preferably, the extraction mechanism includes an extraction motor, an extraction gear, an extraction disk and extraction blades. The extraction motor is fixedly connected to the outside of the extraction shell, the extraction gear is fixedly connected to the output end of the extraction motor, the extraction disk is rotatably connected to the inside of the extraction shell, the edge of the outer peripheral surface of the extraction disk is provided with teeth, the extraction disk is meshed with the extraction gear, and the extraction blade array is provided on the end face of the extraction disk. The extraction blades have the function of drawing air after rotation.

[0012] Preferably, the exhaust pipe is composed of a round pipe and an air jet, both ends of the round pipe are connected to the air return pipe, the air jet is trumpet-shaped, and there are two groups of exhaust pipes respectively located on both sides of the carbonization cylinder.

[0013] Preferably, the synchronous gear group includes a synchronous gear shaft and a synchronous chain. The center of the synchronous gear shaft is a cylindrical shaft. The surface of the cylindrical shaft is provided with spur gears and a large sprocket. There are two groups of synchronous gear shafts in total. The two groups of spur gears are meshed. A synchronous chain is sleeved on the outer side of the large sprocket of the synchronous gear shaft. The synchronous chain is sleeved on the outer side of the lifting shaft. A small sprocket matching the synchronous chain is provided on the end face of the circular shaft. A preset cam is provided on the part of the circular shaft of the lifting shaft located in the combustion chamber. The cam can contact the lifting inner shell. The two groups of cams relatively arranged on the lifting shafts are symmetrically arranged with the center line between the two as the axis.

[0014] Preferably, the guide tube is in the shape of a hollow pipe, and an inclined sheet is provided on the inner side of the guide tube for preventing backflow of airflow.

[0015] Preferably, the lifting inner shell includes a supporting wall and a supporting frame, the supporting wall is rotatably connected to a pipe arranged at the center of the end surface of the side end cover, the supporting frame is fixedly connected to the lower end of the supporting wall, and the supporting frame can contact the lifting shaft.

[0016] Preferably, the flip mechanism comprises a flip motor and a flip gear, the flip motor is connected to the outside of the pull-out shell via a fixing frame, and the flip gear is fixedly connected to the output end of the flip motor and meshes with the flip gear ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The carbonization furnace for preparing activated carbon and straw biomass fuel is provided with a secondary ignition mechanism at the smoke exhaust position, so that the discharge of the carbonization furnace can undergo an ignition test, thereby making the discharge fully burn and reducing the harmful gas discharged, achieving the effect of fully burning and reducing the emission of harmful gases, and solving the problem of excessive smoke discharged from the carbonization furnace and a large amount of harmful gases existing inside.

[0018] 2. The carbonization furnace for preparing activated carbon and straw biomass fuel has an empty bin arranged on the inner side of the carbonization cylinder so that the internal pressure of the carbonization cylinder can be discharged in time during the high-temperature carbonization process to prevent the straw from being pressed into powder. The combustible gas generated by the high temperature of the material can be collected through the empty bin and the gas collecting component, and the combustible gas is put into the carbonization shell through the return air pipe and the venting pipe to realize combustion, thereby reducing the fuel input, achieving the effect of saving the fuel use of the carbonization furnace, and solving the problem that the carbonization furnace has a large fuel consumption and is prone to energy waste.

[0019] 3. The carbonization furnace for preparing activated carbon and straw biomass fuel adjusts the height of the carbonization cylinder inside the carbonization shell so that the heat inside the carbonization cylinder can fully act on the surface of the carbonization cylinder, collects the remaining heat through the tempering bin, and provides a tempering core tube so that the tempering core tube can carry the remaining heat in the flue gas to heat and carbonize the center of the material, so that the inside and outside of the material can be carbonized at high temperature during the carbonization process, preventing the problem of excessive carbonization of the straw during the carbonization process due to uneven heating, and providing an openable carbonization shell and carbonization cylinder to make it more convenient to take out charcoal and put in materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the carbonized shell structure of the present invention; Figure 3 This is a schematic diagram of the structure of the synchronous gear shaft of the present invention; Figure 4 It is a schematic diagram of the lifting shaft structure of the present invention; Figure 5 This is a schematic diagram of the structure of the air venting pipeline of the present invention; Figure 6 This is a schematic diagram of the guide tube structure of the present invention; Figure 7 This is a schematic diagram of the flip gear ring structure of the present invention; Figure 8 This is a schematic diagram of the structure of the extraction fan blade of the present invention; Fig. 9 It is a schematic diagram of the tempering core tube structure of the present invention; Fig.10 It is a schematic diagram of the empty warehouse structure of the present invention.

[0022] Among them: 1. fuel base; 2. combustion chamber; 3. sealing cover; 4. carbonization shell; 5. lifting motor; 6. synchronous gear set; 62. synchronous gear shaft; 63. synchronous chain; 7. lifting shaft; 8. lifting inner shell; 81. supporting wall; 82. supporting frame; 9. carbonization cylinder; 91. outer surrounding shell; 911. upper surrounding shell; 912. lower surrounding shell; 92. side end cover; 93. empty chamber; 931. through groove; 10. gas collection assembly; 101. gas collection combination pipe; 102. docking ring; 11. Extraction shell; 12. Extraction mechanism; 121. Extraction motor; 122. Extraction gear; 123. Extraction disk; 124. Extraction fan blade; 13. Return air duct; 14. Exhaust duct; 141. Round tube; 142. Jet port; 15. Tempering chamber; 16. Connecting tube; 17. Lifting extension shell; 18. Guide tube; 19. Tempering core tube; 20. Secondary ignition mechanism; 21. Guide fan; 22. Flipping mechanism; 221. Flipping motor; 222. Flipping gear; 23. Flipping gear ring. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of 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.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0030] like Figures 1 to 10As shown, the embodiment of the present invention discloses a carbonization furnace for preparing activated carbon and straw biomass fuel, including a fuel base 1, a combustion chamber 2 is fixedly connected to the upper end of the fuel base 1, a sealing cover 3 is slidably connected to the surface of the combustion chamber 2, a carbonization shell 4 is fixedly connected to the upper end of the combustion chamber 2, a lifting motor 5 is fixedly connected to the outer surface of the carbonization shell 4, a synchronous gear set 6 is fixedly connected to the output end of the lifting motor 5, specifically a synchronous gear shaft 62, a lifting shaft 7 is connected to the surface of the synchronous gear set 6, a lifting inner shell 8 is slidably connected to the inner side of the carbonization shell 4, the synchronous gear set 6 includes a synchronous gear shaft 62 and a synchronous chain 63, the center of the synchronous gear shaft 62 is a cylindrical shaft, and the surface of the cylindrical shaft is provided with spur gears and large chain Wheel, there are two groups of synchronous gear shafts 62, two groups of spur gears are meshed, the outer side of the large sprocket of the synchronous gear shaft 62 is sleeved with a synchronous chain 63, the synchronous chain 63 is sleeved on the outer side of the lifting shaft 7, the center of the lifting shaft 7 is a round shaft, and the end face of the round shaft is provided with a small sprocket matching the synchronous chain 63, and the part of the round shaft of the lifting shaft 7 located in the combustion chamber 2 is provided with a preset cam, which can contact the lifting inner shell 8. The cams of the two groups of lifting shafts 7 are relatively arranged with the center line between the two as the axis, and are symmetrically arranged. The synchronous gear group 6 can drive the two groups of lifting shafts 7 to rotate at the same time, so that the lifting shaft 7 can push the lifting inner shell 8 to move up and down on the inner side of the carbonization shell 4, thereby adjusting the height of the lifting inner shell 8.

[0031] In this embodiment, a plurality of grooves are arranged on the surface of the fuel base 1 to enable air to be replenished into the combustion chamber 2 in a timely manner.

[0032] The lifting shaft 7 is in contact with the lifting inner shell 8, and the inner side of the lifting inner shell 8 is rotatably connected with the carbonization cylinder 9. Both ends of the carbonization cylinder 9 are connected with gas collecting components 10. The lifting inner shell 8 includes a support wall 81 and a support frame 82. The support wall 81 is rotatably connected with a pipeline set at the center of the end face of the side end cover 92. The support frame 82 is fixedly connected to the lower end of the support wall 81. The support frame 82 can contact the lifting shaft 7. The lifting inner shell 8 can drive the carbonization cylinder 9 to move up and down inside the carbonization shell 4, making it easier to adjust the position of the carbonization cylinder 9. The composite structure of "lifting inner shell + rotating carbonization cylinder" can meet the carbonization needs of raw materials with different stacking densities while ensuring the uniformity of the thermal field.

[0033] The assembly provided by the present invention adopts a three-stage heat cycle system design, which is composed of a basic combustion layer, a dynamic carbonization layer and a heat recovery layer. The fuel base and the combustion chamber form the basic combustion layer, the carbonization shell and the lifting mechanism form the dynamic carbonization layer, and the tempering chamber and the guide system form the heat recovery layer. The heat conduction path of the present invention is clear and controllable, which improves the energy utilization efficiency. And it is convenient to adjust the working parameters of each layer according to the different characteristics of the straw raw material.

[0034] One end of the gas collecting component 10 away from the carbonization cylinder 9 is connected to the extraction shell 11. One end of the gas collecting component 10 is a gas collecting combination pipe 101, and the other end is a docking ring 102. One end of the gas collecting combination pipe 101 is respectively connected to the four empty bins 93, and the other end is connected to the docking ring 102. The docking ring 102 is sleeved on the outside of the pipeline arranged at the center of the end face of the side end cover 92. The docking ring 102 is connected to the extraction shell 11. The gas collecting component 10 can be connected to the empty bins 93, so that the gas inside each empty bin 93 can be discharged into the inside of the extraction shell 11.

[0035] An extraction mechanism 12 is connected to the outside of the extraction shell 11, and the extraction mechanism 12 includes a extraction motor 121, a extraction gear 122, a extraction disk 123 and an extraction blade 124. The extraction motor 121 is fixedly connected to the outside of the extraction shell 11, and the extraction gear 122 is fixedly connected to the output end of the extraction motor 121. The extraction disk 123 is rotatably connected to the inside of the extraction shell 11. The edge of the outer peripheral surface of the extraction disk 123 is provided with teeth, and the extraction disk 123 is meshed with the extraction gear 122. The extraction blade 124 is arranged in an array on the end face of the extraction disk 123. The extraction blade 124 has the function of pumping air after rotation. The extraction mechanism 12 can accelerate the flow of gas inside the extraction shell 11, so that the gas inside the empty bin 93 can be discharged in time, so that an oxygen-deficient environment quickly appears inside the carbonization cylinder 9, and the material inside the carbonization cylinder 9 is prevented from burning.

[0036] The upper end of the extraction shell 11 is connected with a return air duct 13, and the return air duct 13 is located above the lifting inner shell 8. The lower end of the return air duct 13 is connected with a venting duct 14. The extraction shell 11 is slidably connected to the carbonization shell 4 to cooperate with the lifting of the lifting inner shell 8. The upper end of the carbonization shell 4 is provided with a cover plate that can be opened and closed, and a hinge shaft is provided at the edge of the cover plate. A long through hole is provided on the top of the cover plate. The upper end of the carbonization shell 4 is fixedly connected with a tempering bin 15. The venting duct 14 consists of a circular tube 141 and a jet port 142. Both ends of the circular tube 141 are connected with the return air duct 13, and the jet port 142 is trumpet-shaped. There are two groups of venting ducts 14, which are respectively located on both sides of the carbonization cylinder 9. The venting duct 14 can release the combustible gases such as carbon monoxide generated by the high temperature inside the carbonization cylinder 9 into the inner side of the carbonization shell 4 in time, so that the gas can be generated and supplemented in time to the carbonization shell 4 and contact with the flame of the combustion bin 2 to produce combustion, thereby reducing the delivery of fuel inside the combustion bin 2. During the charcoal making process, the material is prepared in a sealed oxygen-deficient environment, so a large amount of carbon monoxide is generated in this process. The secondary ignition mechanism provided in the present invention ignites the generated carbon monoxide, and the tempering mechanism is provided to burn the carbon monoxide, and the generated heat is utilized again, thereby achieving the effect of heat recovery and reuse.

[0037] The tempering bin 15 covers the outer side of the long through hole of the carbonization shell 4, and the end face of the tempering bin 15 is slidably connected with a connecting pipe 16, and the end face of the connecting pipe 16 is clamped with a lifting extension shell 17, and the outer side of the lifting extension shell 17 is sleeved with a guide pipe 18, and the side of the guide pipe 18 close to the carbonization cylinder 9 is connected with a tempering core tube 19, and the tempering core tube 19 passes through the carbonization cylinder 9. The end of the tempering core tube 19 close to the guide tube 18 is provided with a secondary ignition mechanism 20, and the secondary ignition mechanism 20 ignites the inner airflow of the tempering core tube 19 by electric ignition to make carbon. The hot air flow generated by the carbon monoxide produced in the process after being ignited can be reused, and the emission of toxic gases can be avoided. The carbonization cylinder 9 includes an outer enclosure 91, a side end cover 92 and an empty chamber 93. The outer enclosure 91 is divided into an upper enclosure 911 and a lower enclosure 912. The end faces of the upper enclosure 911 and the lower enclosure 912 are both arc-shaped and together form a cylindrical shape. One end of the upper enclosure 911 is hinged to the lower enclosure 912, and the other end is clamped. The side end cover 92 is fixedly connected to the lower enclosure 91 2, the tempering core tube 19 passes through the center of the side end cover 92, and a pipeline is arranged at the center of the end face of the side end cover 92. The pipeline is outside the tempering core tube 19, and the empty bin 93 is composed of four empty shells with different arc lengths. The overall shape of the empty bin 93 is cylindrical. The empty bin 93 is arranged on the inner side of the outer enclosure shell 91. The four sections of the empty bin 93 are divided into four parts: upper, lower, left and right. The left and right and lower empty bins 93 are connected to the inner wall of the lower enclosure shell 912, and the upper empty bin 93 is connected to the inner side of the upper enclosure shell 911. The empty bin 93 The inner side of the cavity is provided with a through groove 931 penetrating the inner wall. The carbonization cylinder 9 can be conveniently opened in time to take out or put in materials by using the upper enclosure shell 911 and the lower enclosure shell 912 while being closed. By setting an empty bin 93 inside the outer enclosure shell 91, the high temperature of the flame will not directly contact the carbonized material, preventing the straw from being scorched. By setting the empty bin 93 and setting the through groove 931 inside the empty bin 93, the gas generated by the high temperature of the carbonized material inside the carbonization cylinder 9 can enter the empty bin 93 in time and be discharged. In addition, the four sections of unequal arc cavities of the empty bin of the present invention can also form a turbulence enhancement effect, and the heat transfer coefficient is improved.

[0038] A guide fan 21 is fixedly connected to the outside of the guide tube 18. The guide tube 18 is a hollow pipe in shape. An inclined plate is provided on the inside of the guide tube 18 to prevent the backflow of airflow. The guide tube 18 can use the inclined plate on the inside to prevent the backflow of the airflow generated by the guide fan 21.

[0039] A flip mechanism 22 is arranged on the outside of the extraction shell 11, and a flip gear ring 23 is meshed on the surface of the flip mechanism 22. The flip mechanism 22 includes a flip motor 221 and a flip gear 222. The flip motor 221 is connected to the outside of the extraction shell 11 through a fixed frame, and the flip gear 222 is fixedly connected to the output end of the flip motor 221 and meshed with the flip gear ring 23. The flip mechanism 22 can drive the carbonization cylinder 9 to rotate, so that the carbonization cylinder 9 can rotate to make the heating more uniform. The flip gear ring 23 is connected to the carbonization cylinder 9.

[0040] When in use, first open the cover plate provided on the upper end of the carbonization shell 4, then open the upper surrounding shell 911, place the carbon blocks and straw biomass inside the lower surrounding shell 912, and insert the tempering core tube 19 into the side end cover 92 and put it into the center of the material, close the upper surrounding shell 911, seal the material inside the carbonization cylinder 9, close the cover plate of the carbonization shell 4, pull out the connecting tube 16 from the inside of the tempering bin 15 and clamp it on the lifting extension shell 17, start the lifting motor 5 to drive the synchronous gear set 6, so that the lifting shaft 7 rotates to push the lifting inner shell 8 to lift and change the height, so that the height between the carbonization cylinder 9 and the carbonization shell 4 can be controlled, so that the heat can be wrapped around the carbonization cylinder 9 when the device burns; By putting the fuel into the combustion chamber 2 and pulling down the sealing cover 3, the flame generated by the fuel can burn upwards, and the grooves arranged on the surface of the fuel base 1 can allow air to be replenished into the combustion chamber 2 in time, and the heat heats the internal material around the surface of the carbonization cylinder 9. By starting the flip motor 221 to drive the flip gear 222 to rotate, the flip gear ring 23 drives the side end cover 92 to rotate, so that the carbonization cylinder 9 can rotate in the flame, so that the material inside the carbonization cylinder 9 can be evenly heated and carbonized, and uneven heating can be prevented from causing excessive carbonization of the straw biomass below; When the carbonization cylinder 9 is heated, the heat passes through the empty bin 93 to carbonize the internal material at high temperature. The material generates gas after being heated. The gas expands and enters the empty bin 93 from the through groove 931. The extraction motor 121 is started to drive the extraction gear 122 to drive the extraction disk 123 to rotate, so that the air flow inside the empty bin 93 passes through the gas collecting component 10 and is adsorbed into the extraction shell 11. The air flow is pushed into the return air duct 13 by the rotation of the extraction blade 124 and discharged from the exhaust duct 14 to join the burning flame. The carbon monoxide in the gas can be burned to reduce the input of fuel. The residual heat from the combustion around the carbonization cylinder 9 enters the tempering chamber 15 through the upper end of the carbonization shell 4, and the residual heat and gas enter the guide tube 18 through the connecting pipe 16 and the lifting extension shell 17. The guide fan 21 is started to generate a push to make the heat flow enter the tempering core tube 19, and the secondary ignition mechanism 20 is used to continuously try to ignite the heat for the second time, so that the combustible gas and harmful gas in the heat flow can be burned again, reducing the discharge of harmful gases and being able to maximize the use of the heat flow while heating and carbonizing the material at the center.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A carbonization furnace for preparing activated carbon and straw biomass fuel, characterized in that: The fuel base (1) comprises a combustion chamber (2) fixedly connected to the upper end of the fuel base (1), a sealing cover (3) slidably connected to the surface of the combustion chamber (2), a carbonization shell (4) fixedly connected to the upper end of the combustion chamber (2), a lifting motor (5) fixedly connected to the outer surface of the carbonization shell (4), a synchronous gear set (6) fixedly connected to the output end of the lifting motor (5), a lifting shaft (7) connected to the surface of the synchronous gear set (6), a lifting inner shell (8) slidably connected to the inner side of the carbonization shell (4), and the lifting shaft (7) is in contact with the lifting inner shell (8); The inner side of the lifting inner shell (8) is rotatably connected to a carbonization cylinder (9), the carbonization cylinder (9) is connected to a gas collecting assembly (10), the end of the gas collecting assembly (10) away from the carbonization cylinder (9) is connected to a withdrawal shell (11), the outer side of the withdrawal shell (11) is connected to a withdrawal mechanism (12), the upper end of the withdrawal shell (11) is connected to an air return pipe (13), the lower end of the air return pipe (13) is connected to an air discharge pipe (14), and the withdrawal shell (11) is slidably connected to the carbonization shell (4); The carbonization shell (4) is provided with a cover plate at the upper end, a long through hole is provided at the top end of the cover plate, a tempering chamber (15) is fixedly connected to the upper end of the carbonization shell (4), the tempering chamber (15) covers the outer side of the long through hole of the carbonization shell (4), a connecting pipe (16) is slidably connected to the end face of the tempering chamber (15), a lifting extension shell (17) is clamped on the end face of the connecting pipe (16), a guide pipe (18) is sleeved on the outer side of the lifting extension shell (17), a side of the guide pipe (18) close to the carbonization cylinder (9) is connected to a tempering core pipe (19), the tempering core pipe (19) passes through the carbonization cylinder (9), a secondary ignition mechanism (20) is provided at one end of the tempering core pipe (19) close to the guide pipe (18), and a guide fan (21) is fixedly connected to the outer side of the guide pipe (18); A turning mechanism (22) is arranged on the outside of the extraction shell (11), a turning gear ring (23) is meshed on the surface of the turning mechanism (22), and the turning gear ring (23) is connected to the carbonization cylinder (9).

2. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The carbonization cylinder (9) comprises an outer enclosure shell (91), a side end cover (92) and an empty chamber (93); the outer enclosure shell (91) is divided into an upper enclosure shell (911) and a lower enclosure shell (912); the end surfaces of the upper enclosure shell (911) and the lower enclosure shell (912) are both arc-shaped and together form a cylindrical shape; one end of the upper enclosure shell (911) is hinged to the lower enclosure shell (912) and the other end is clamped; the side end cover (92) is fixedly connected to both ends of the lower enclosure shell (912); the tempering core tube (19) passes through the center of the side end cover (92); the side end cover (92) ) is provided with a pipe at the center of the end face, the pipe is outside the tempering core tube (19), the empty bin (93) is composed of four empty shells with different arc lengths, the overall shape of the empty bin (93) is cylindrical, the empty bin (93) is arranged inside the outer enclosure shell (91), the four sections of the empty bin (93) are divided into four parts: upper, lower, left and right, the left and right empty bins (93) and the lower empty bins (93) are connected to the inner wall of the lower enclosure shell (912), the upper empty bin (93) is connected to the inner side of the upper enclosure shell (911), and the inner side of the cavity of the empty bin (93) is provided with a through groove (931) penetrating the inner wall.

3. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 2, characterized in that: One end of the gas collection assembly (10) is a gas collection combined pipe (101), and the other end is a docking ring (102); one end of the gas collection combined pipe (101) is respectively connected to the four empty bins (93), and the other end is connected to the docking ring (102); the docking ring (102) is sleeved on the outside of a pipe arranged at the center of the end face of the side end cover (92); and the docking ring (102) is connected to the extraction shell (11).

4. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The extraction mechanism (12) comprises an extraction motor (121), an extraction gear (122), an extraction disk (123) and extraction blades (124); the extraction motor (121) is fixedly connected to the outside of the extraction housing (11); the extraction gear (122) is fixedly connected to the output end of the extraction motor (121); the extraction disk (123) is rotatably connected to the inside of the extraction housing (11); teeth are provided on the edge of the outer peripheral surface of the extraction disk (123); the extraction disk (123) meshes with the extraction gear (122); an array of extraction blades (124) is provided on the end surface of the extraction disk (123); and the extraction blades (124) have the function of extracting air after rotating.

5. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The exhaust pipe (14) is composed of a circular pipe (141) and an air jet (142). Both ends of the circular pipe (141) are connected to the air return pipe (13). The air jet (142) is trumpet-shaped. There are two sets of exhaust pipes (14) respectively located on both sides of the carbonization cylinder (9).

6. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The synchronous gear set (6) comprises a synchronous gear shaft (62) and a synchronous chain (63). The center of the synchronous gear shaft (62) is a cylindrical shaft. The surface of the cylindrical shaft is provided with a spur gear and a large sprocket. The synchronous gear shaft (62) is provided with two groups of spur gears. The two groups of spur gears are meshed. The outer side of the large sprocket of the synchronous gear shaft (62) is sleeved with a synchronous chain (63). The synchronous chain (63) is sleeved on the outer side of the lifting shaft (7). The center of the lifting shaft (7) is a round shaft. The end surface of the round shaft is provided with a small sprocket matching the synchronous chain (63). The part of the round shaft of the lifting shaft (7) located in the combustion chamber (2) is provided with a preset cam. The cam can contact the lifting inner shell (8). The two groups of cams arranged relatively to the lifting shaft (7) are symmetrically arranged with the center line between the two as the axis.

7. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The guide tube (18) has an outer shape of a hollow pipe, and an inclined sheet for preventing backflow of airflow is provided on the inner side of the guide tube (18).

8. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 2, characterized in that: The lifting inner shell (8) comprises a supporting wall (81) and a supporting frame (82); the supporting wall (81) is rotatably connected to a pipe arranged at the center of the end surface of the side end cover (92); the supporting frame (82) is fixedly connected to the lower end of the supporting wall (81); and the supporting frame (82) is capable of contacting the lifting shaft (7).

9. The carbonization furnace for preparing activated carbon and straw biomass fuel according to claim 1, characterized in that: The flip mechanism (22) comprises a flip motor (221) and a flip gear (222); the flip motor (221) is connected to the outside of the extraction shell (11) via a fixing frame; the flip gear (222) is fixedly connected to the output end of the flip motor (221) and meshes with the flip gear ring (23).

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