High-temperature cracking device for preparing biochar based on soybean dregs

Abstract

The utility model discloses a high-temperature cracking device for preparing biochar based on soybean dregs, and relates to the technical field of biochar preparation, the high-temperature cracking device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support frame, the inner wall of the support frame is rotatably connected with a carbonization cylinder, and the inner wall of the carbonization cylinder is provided with a sealing door and a heating wire; the inner wall of the carbonization cylinder is rotationally connected with a first rotating rod, the outer surface of the first rotating rod is communicated with a plurality of stirring rods for improving the heating uniformity of bean dregs, and an electromagnetic valve is mounted on the outer surface of the first rotating rod. According to the utility model, when the biochar is prepared from soybean dregs, the soybean dregs are stirred and mixed by using the carbonization cylinder and the stirring rod which rotate reversely, so that the soybean dregs are uniformly heated, the synchronous heating and carbonization of the soybean dregs are further realized, and meanwhile, after the biochar is prepared, cooling water and heat in the biochar are subjected to heat exchange, so that the heat exchange efficiency is improved. Therefore, the cooling efficiency of the biochar is improved, the preparation efficiency of the biochar is improved, and the preparation cost of the biochar is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of biochar preparation, and specifically relates to a high-temperature pyrolysis device for preparing biochar based on soybean dregs. BACKGROUND

[0002] Biomass charcoal is a new type of functional material rich in carbon, which is obtained by pyrolysis of waste biomass residues, sewage sludge, livestock and poultry manure, etc. under anaerobic or anoxic conditions at a certain temperature, and has the effects of carbon sequestration and soil fertility improvement. In addition, the pore structure of biomass charcoal is very unique, the specific surface area is huge, and it also has very rich surface active functional groups and stable chemical properties, which have high potential in adsorbing refractory pollutants and improving environmental quality.

[0003] Soybean dregs, as a kind of agricultural and sideline products rich in nitrogen, have very high yield. According to statistics, more than 80,000 tons of soybean dregs can be produced in China every year, and most of them are dumped in landfills as agricultural waste, causing resource waste. In addition, soybean dregs are rich in carbohydrates and proteins, and the contents of C and N elements are high. Therefore, nitrogen-rich biomass charcoal can be obtained by pyrolyzing soybean dregs without adding exogenous nitrogen dopant, so that the soybean dregs can be fully utilized.

[0004] At present, the high-temperature pyrolysis device for preparing biochar from soybean dregs is usually a tubular furnace. Since the biochar will reignite when it is in contact with air at high temperature, the yield is reduced. Therefore, the natural cooling method is generally used to wait for the biochar in the tubular furnace to cool down before taking it out. However, this process requires the continuous introduction of carrier gas until the temperature drops below 100℃, which seriously affects the preparation efficiency of biochar and increases the cost of biochar preparation. Therefore, we provide a high-temperature pyrolysis device for preparing biochar based on soybean dregs to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a high-temperature pyrolysis device for preparing biochar based on soybean dregs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-temperature pyrolysis device for preparing biochar based on soybean dregs, comprising a bottom plate, the upper surface of the bottom plate is fixedly connected with a support frame, the inner wall of the support frame is rotatably connected with a carbonization cylinder, the inner wall of the carbonization cylinder is provided with a closing door and a heating wire, the inner wall of the carbonization cylinder is rotatably connected with a first rotating rod, the outer surface of the first rotating rod is communicated with a plurality of stirring rods for improving the uniformity of soybean dregs heating, the outer surface of the first rotating rod is provided with an electromagnetic valve, the outside of the bottom plate is provided with a rotating assembly for driving the carbonization cylinder and the stirring rods to rotate, and a cooling assembly for biochar cooling treatment.

[0007] Further, the rotating assembly comprises a servo motor mounted on the inner wall of the support frame, and two gear rings fixedly connected with the carbonization cylinder, two output shaft ends of the servo motor are fixedly connected with second rotating rods, the outer surfaces of the second rotating rods are fixedly connected with gears, the gear rings are meshed with the gears, the servo motor is connected with power supply and started, the second rotating rods can drive the gears to rotate synchronously, the gear rings can be driven to rotate reversely through the meshing effect between the gears and the gear rings, and then the carbonization cylinder can be driven to rotate reversely along the inner wall of the support frame.

[0008] Further, the rotating assembly further comprises two first sprockets fixedly connected with the second rotating rods at corresponding positions, and two second sprockets fixedly connected with the first rotating rod, the first sprockets and the second sprockets are connected through a chain transmission, the second rotating rods can drive the first sprockets to rotate after rotating, and the first sprockets can drive the second sprockets to rotate under the transmission effect of the chain, so that the first rotating rod can drive the stirring rod to rotate, to realize the stirring and mixing of the soybean dregs in the carbonization cylinder, and to improve the uniformity of the soybean dregs heated.

[0009] Further, the cooling assembly comprises a water tank fixedly connected with the bottom plate, a water pump is mounted on the inner top wall of the water tank, the output end of the water pump extends to the upper side of the water tank, a refrigerator is mounted on the upper surface of the water tank and is connected with the output end of the water pump, the output end of the refrigerator is connected with a connecting pipe, and the connecting pipe is connected with the first rotating rod through a sealing bearing, the water pump is connected with power supply and started, to generate suction, so that the water in the water tank is extracted, and then the water is sequentially delivered to the refrigerator, the connecting pipe, the first rotating rod and the stirring rod, and the refrigerator is used to cool the delivered water, so that the prepared biochar is cooled, to improve the cooling efficiency of the biochar.

[0010] Further, the upper surface of the bottom plate is fixedly connected with fixed frames, the inner top walls of the fixed frames are mounted with electric push rods, the telescopic ends of the electric push rods are fixedly connected with universal wheels, the electric push rods are connected with power supply and started, the telescopic ends are telescoped, the universal wheels are driven to move up and down, and the bottom plate is lifted up under the blocking effect of the fixed frames when the universal wheels move down to contact the ground, so that the high-temperature pyrolysis device for preparing biochar based on soybean dregs is conveniently moved, to improve the flexibility during use.

[0011] Further, the outer surface of the first rotating rod is connected with two fixed pipes, and the inner walls of the fixed pipes are fixedly connected with filter screens, the fixed pipes and the filter screens are arranged, to avoid the soybean dregs from blocking the preset gas input port, so that the preset gas can normally enter the carbonization cylinder.

[0012] Further, the inner wall of the carbonization cylinder is rotationally connected with a plurality of scraping plates, and the stirring rod is fixedly connected with the scraping plates, through the setting of the scraping plates, the soybean dregs adhered to the inner wall of the carbonization cylinder can be scraped, and the soybean dregs accumulated at the bottom of the carbonization cylinder can be scraped up conveniently, so that the stirring and mixing effect of the soybean dregs is improved.

[0013] Further, the upper surface of the bottom plate is fixedly connected with a fixing rod, and the upper surface of the fixing rod is fixedly connected with a control panel, through the setting of the fixing rod and the control panel, the electrical elements in the high-temperature pyrolysis device for preparing biochar based on soybean dregs can be controlled uniformly, so that the convenience in use is improved.

[0014] Compared with the prior art, the high-temperature pyrolysis device for preparing biochar based on soybean dregs has the following beneficial effects:

[0015] 1. The utility model discloses a preparation of biochar based on soybean dregs, utilize the carbonization cylinder and the stirring rod of reverse rotation to the soybean dregs of stirring and mixing when using soybean dregs, so that soybean dregs is heated evenly, and then realizes the synchronous heating carbonization of soybean dregs, simultaneously can utilize cooling water and the heat exchange of the heat in biochar after the preparation of biochar, thereby improve the cooling efficiency of biochar, and then improve the preparation efficiency of biochar, and reduce the preparation cost of biochar.

[0016] 2. The utility model discloses a preparation of biochar based on soybean dregs, through setting up the fixed frame, electric push rod and universal wheel, can conveniently move the high-temperature pyrolysis device, through setting up the fixed pipe and filter screen, can avoid the soybean dregs and block the preset gas input, so that guaranteeing that the preset gas is normally entered carbonization cylinder, through setting up the scraping plate, can scrape the soybean dregs adhered to the inner wall of carbonization cylinder, and conveniently scrape the soybean dregs accumulated at the bottom of carbonization cylinder, so that the stirring and mixing effect of soybean dregs is improved, through setting up the fixed rod and control panel, can conveniently control the electrical elements in the high-temperature pyrolysis device for preparing biochar based on soybean dregs. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a right view schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 3 It is a front view sectional view of the three-dimensional structure of the utility model;

[0020] Figure 4 It is a local structure schematic diagram of the utility model;

[0021] Figure 5 It is a front view schematic diagram of the three-dimensional structure of the utility model; Figure 4 It is an enlarged schematic diagram of structure A of the utility model.

[0022] In the figure: 1, the bottom plate; 2, the support frame; 3, the carbonization cylinder; 4, the closing door; 5, the heating wire; 6, the first rotating rod; 7, the stirring rod; 8, the electromagnetic valve; 901, the servo motor; 902, the gear ring; 903, the second rotating rod; 904, the gear; 905, the first sprocket; 906, the second sprocket; 1001, the water tank; 1002, the water pump; 1003, the refrigerator; 1004, the connecting pipe; 11, the fixed frame; 12, the electric push rod; 13, the universal wheel; 14, the fixed pipe; 15, the filter screen; 16, the scraping plate; 17, the fixed rod; 18, the control panel. DETAILED DESCRIPTION

[0023] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not intended to limit the scope of the present application.

[0024] As described in the background, the high-temperature pyrolysis device for preparing biochar from bean dregs at present is generally a tubular furnace, and since biochar will reignite when it contacts air under high-temperature conditions, thereby reducing the yield, a natural cooling method is generally adopted to wait for the biochar in the tubular furnace to cool down before taking it out, but the above process needs to keep the carrier gas flowing in until the temperature drops below 100℃, which seriously affects the preparation efficiency of biochar and increases the cost of biochar preparation. Therefore, the present embodiment provides a high-temperature pyrolysis device for preparing biochar from soybean dregs.

[0025] Referring to Figures 1 to 5 The present embodiment provides a high-temperature pyrolysis device for preparing biochar from soybean dregs, which comprises a bottom plate 1, the upper surface of the bottom plate 1 is fixedly connected with a support frame 2, the inner wall of the support frame 2 is rotatably connected with a carbonization cylinder 3, the inner wall of the carbonization cylinder 3 is installed with a closing door 4 and a heating wire 5, the inner wall of the carbonization cylinder 3 is rotatably connected with a first rotating rod 6, the outer surface of the first rotating rod 6 is communicated with a plurality of stirring rods 7 for improving the uniformity of the heating of the bean dregs, and the outer surface of the first rotating rod 6 is installed with an electromagnetic valve 8.

[0026] The closing door 4 can be used to close the inlet and outlet of the carbonization cylinder 3, thereby avoiding the soybean dregs from spilling out when the carbonization cylinder 3 is rotating, and the limiting structure of the closing door 4 can be set according to the prior art, the heating wire 5 can be used to provide heat for the carbonization of the soybean dregs inside the carbonization cylinder 3.

[0027] The first rotating rod 6 and the stirring rod 7 are both hollow structures, the first rotating rod 6 is divided into a space for presetting gas input and a space for the flow of biochar cooling water, and the two spaces are not communicated, the first rotating rod 6 can be connected with an external inert gas source and deliver the preset gas into the carbonization cylinder 3, and the electromagnetic valve 8 can be used to control the transmission of the preset gas.

[0028] In addition, a pipeline for gas release can be connected to the carbonization cylinder 3, and a gas treatment device can be arranged at the gas outlet of the pipeline, so as to avoid pollution caused by direct discharge to the external environment.

[0029] The outer surface of the first rotating rod 6 is connected with two fixed pipes 14, and the inner wall of each fixed pipe 14 is fixedly connected with a filter screen 15. By arranging the fixed pipes 14 and the filter screens 15, the soybean dregs can be prevented from blocking the preset gas inlet, so as to ensure that the preset gas can normally enter the carbonization cylinder 3.

[0030] The inner wall of the carbonization cylinder 3 is rotatably connected with a plurality of scraping plates 16, and the stirring rod 7 is fixedly connected with the scraping plates 16. By arranging the scraping plates 16, the soybean dregs adhering to the inner wall of the carbonization cylinder 3 can be scraped, and the soybean dregs accumulated at the bottom of the carbonization cylinder 3 can be scraped, so as to improve the stirring and mixing effect of the soybean dregs.

[0031] The upper surface of the bottom plate 1 is fixedly connected with a fixed frame 11, the inner top wall of each fixed frame 11 is installed with an electric push rod 12, and the telescopic end of each electric push rod 12 is fixedly connected with a universal wheel 13.

[0032] The electric push rod 12 is connected to the power supply and started, and the telescopic end is telescopic, which can drive the universal wheel 13 to move up and down. When the universal wheel 13 moves down to contact the ground and continues to move, the bottom plate 1 can be lifted up under the obstruction of the fixed frame 11, so as to facilitate the movement of the high-temperature pyrolysis device for preparing biochar based on soybean dregs, thereby improving the flexibility during use.

[0033] When the high-temperature pyrolysis device for preparing biochar based on soybean dregs is moved, the universal wheel 13 can be driven by the electric push rod 12 to be retracted into the fixed frame 11 again, so that the bottom surface of the bottom plate 1 contacts the ground, thereby limiting the use position of the high-temperature pyrolysis device for preparing biochar based on soybean dregs.

[0034] The outside of the bottom plate 1 is provided with a rotating assembly for driving the carbonization cylinder 3 and the stirring rod 7 to rotate, and a cooling assembly for cooling treatment of biochar. The rotating assembly comprises a servo motor 901 installed on the inner wall of the support frame 2, and two gear rings 902 fixedly connected with the carbonization cylinder 3. The two output shaft ends of the servo motor 901 are fixedly connected with second rotating rods 903, the outer surface of each second rotating rod 903 is fixedly connected with a gear 904, and the gear ring 902 is engaged with the gear 904.

[0035] The servo motor 901 is connected to the power supply and started, which can drive the gears 904 connected with the second rotating rods 903 to rotate synchronously, and through the engagement between the gears 904 and the gear rings 902, the gear rings 902 can be driven to rotate in the opposite direction, thereby driving the carbonization cylinder 3 to rotate in the opposite direction along the inner wall of the support frame 2.

[0036] The rotating assembly further comprises two first sprockets 905 fixed with the second rotating rod 903 at corresponding positions, and two second sprockets 906 fixed with the first rotating rod 6, and the first sprockets 905 and the second sprockets 906 are connected through a chain transmission.

[0037] When the second rotating rod 903 rotates, the first sprockets 905 are driven to rotate, and the second sprockets 906 are driven to rotate under the transmission of the chain, so that the stirring rod 7 is driven to rotate through the first rotating rod 6, so as to realize the stirring and mixing of the soybean dregs in the carbonization cylinder 3, and further improve the uniformity of the soybean dregs.

[0038] The cooling assembly comprises a water tank 1001 fixedly connected with the bottom plate 1, a water pump 1002 is installed on the inner top wall of the water tank 1001, the output end of the water pump 1002 penetrates through the water tank 1001 and extends above the water tank 1001, a refrigerating device 1003 in communication with the output end of the water pump 1002 is installed on the upper surface of the water tank 1001, a connecting pipe 1004 in communication with the output end of the refrigerating device 1003 is arranged, and the connecting pipe 1004 is in communication with the first rotating rod 6 through a sealing bearing.

[0039] When the water pump 1002 is connected to the power supply and started, suction force can be generated, so that the water in the water tank 1001 is extracted, and then the water is sequentially delivered to the refrigerating device 1003, the connecting pipe 1004, the first rotating rod 6 and the stirring rod 7, and the delivered water is cooled by the refrigerating device 1003, so as to cool the prepared biochar, thereby improving the cooling efficiency of the biochar.

[0040] In addition, a drain port with a valve installed thereon can be in communication with the connecting pipe 1004, and the valve can be opened to discharge the used cooling water from the connecting pipe 1004, and the cooling water can be poured into the water tank 1001 again for reuse.

[0041] The upper surface of the bottom plate 1 is fixedly connected with a fixed rod 17, and the upper surface of the fixed rod 17 is fixedly connected with a control panel 18, so that the electrical elements in the high-temperature pyrolysis device for preparing biochar based on soybean dregs can be conveniently controlled, thereby improving the convenience during use.

[0042] The components in the drawings of the utility model are only for reference, and no specific size standard is given, and the specific size is determined according to the actual production requirements, and the materials of the components can be replaced according to the actual needs.

[0043] The utility model discloses a plurality of electric elements are the conventional equipment of the market purchase that the person skilled in the art is known, can according to actual need carry out the selection of model or carry out customization, its setting mode, installation mode and electrical connection mode, for the person skilled in the art, just according to its use instruction book's request carries out debugging operation can, here no longer carry on the elaboration.

[0044] Principle: when using high-temperature pyrolysis device based on soybean dregs to prepare biochar, the closing door 4 can be opened to add soybean dregs into the carbonization cylinder 3, then the closing door 4 is closed, then the electromagnetic valve 8 is opened, so that the external inert gas source enters the electromagnetic valve 8 through the first rotating rod 6, and the transmission of the preset gas can be controlled by the electromagnetic valve 8, then the heating wire 5 is connected to the power supply, heat is generated and transmitted to the inside of the carbonization cylinder 3, thereby providing heat for the carbonization of soybean dregs in the carbonization cylinder 3, then the servo motor 901 is connected to the power supply and started, the second rotating rod 903 can drive the gear 904 connected thereto to rotate synchronously, and through the meshing action between the gear 904 and the gear ring 902, the gear ring 902 can be driven to rotate reversely, thereby driving the carbonization cylinder 3 to rotate reversely along the inner wall of the support frame 2, at the same time, the second rotating rod 903 can drive the first sprocket 905 to rotate, and the second sprocket 906 can be driven to rotate under the transmission action of the chain, thereby driving the stirring rod 7 to rotate through the first rotating rod 6, so as to realize the stirring and mixing of soybean dregs in the carbonization cylinder 3, and the rotation of the carbonization cylinder 3 and the stirring rod 7 is reversely opposite, so as to realize the sufficient stirring and mixing of soybean dregs, thereby improving the uniformity of soybean dregs heating;

[0045] After the preparation of biochar is completed, the water pump 1002 can be connected to the power supply and started, so as to generate suction, thereby extracting the water in the water tank 1001, and then the water is sequentially delivered to the refrigerator 1003, the connecting pipe 1004, the first rotating rod 6 and the stirring rod 7, and the delivered water is cooled and cooled by the refrigerator 1003, and the cooling water in the first rotating rod 6 and the stirring rod 7 exchanges heat with the prepared biochar, so as to realize the effect of cooling and cooling, thereby improving the cooling and cooling efficiency of biochar, thereby improving the preparation efficiency of biochar, and reducing the preparation cost of biochar, after the cooling is completed, the closing door 4 can be opened, so as to take out the biochar in the carbonization cylinder 3, for subsequent use.

Claims

1. A high temperature pyrolysis device for the preparation of biochar based on soybean dregs, comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a support frame (2), the inner wall of the support frame (2) is rotatably connected with a carbonization cylinder (3), the inner wall of the carbonization cylinder (3) is provided with a sealing door (4) and a heating wire (5), the inner wall of the carbonization cylinder (3) is rotatably connected with a first rotating rod (6), the outer surface of the first rotating rod (6) is communicated with a plurality of stirring rods (7) for improving the uniformity of bean dreg heating, the outer surface of the first rotating rod (6) is provided with an electromagnetic valve (8), the outside of the bottom plate (1) is provided with a rotating assembly for driving the carbonization cylinder (3) and the stirring rod (7) to rotate, and a cooling assembly for biochar cooling treatment.

2. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The rotating assembly comprises a servo motor (901) mounted on the inner wall of the support frame (2), and two gear rings (902) fixedly connected with the carbonization cylinder (3), both output shaft ends of the servo motor (901) are fixedly connected with a second rotating rod (903), the outer surface of each second rotating rod (903) is fixedly connected with a gear (904), and the gear ring (902) is engaged with the gear (904).

3. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 2, characterized in that: The rotating assembly further comprises two first sprockets (905) fixed with the second rotating rod (903) at corresponding positions, and two second sprockets (906) fixed with the first rotating rod (6), and the first sprocket (905) and the second sprocket (906) are connected by a chain drive.

4. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The cooling assembly comprises a water tank (1001) fixedly connected with the bottom plate (1), a water pump (1002) is mounted on the inner top wall of the water tank (1001), the output end of the water pump (1002) penetrates through the water tank (1001) and extends above the water tank (1001), a refrigerating device (1003) is mounted on the upper surface of the water tank (1001) and communicates with the output end of the water pump (1002), the output end of the refrigerating device (1003) is communicated with a connecting pipe (1004), and the connecting pipe (1004) communicates with the first rotating rod (6) through a sealing bearing.

5. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a fixed frame (11), the inner top wall of each fixed frame (11) is provided with an electric push rod (12), and the telescopic end of each electric push rod (12) is fixedly connected with a universal wheel (13).

6. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The outer surface of the first rotating rod (6) is communicated with two fixed pipes (14), and the inner wall of each fixed pipe (14) is fixedly connected with a filter screen (15).

7. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The inner wall of the carbonization cylinder (3) is rotatably connected with a plurality of scraping plates (16), and the stirring rod (7) is fixedly connected with the scraping plate (16).

8. The high-temperature pyrolysis device for preparing biochar based on soybean dregs according to claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a fixed rod (17), and the upper surface of the fixed rod (17) is fixedly connected with a control panel (18).

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