Hydrogen production device for pyrolysis of citric acid industrial sludge

Abstract

The application relates to a hydrogen production device for pyrolysis of citric acid industrial sludge, and belongs to the field of chemical equipment. The device comprises a machine box, an upper feeding cavity, a pyrolysis cavity and a separation cavity are sequentially arranged in the machine box, a charging assembly for loading industrial sludge and a heat carrier is arranged in the machine box, conveying belts for driving the charging assembly to translate along the upper feeding cavity, the pyrolysis cavity and the separation cavity are arranged on the inner walls of the two sides of the machine box; the charging assembly comprises a folding and self-rotatable charging cylinder body, electric telescopic rods for driving the charging cylinder body to unfold or fold are arranged at the two ends of the charging cylinder body, and an electric heating plate is arranged in the pyrolysis cavity; a purification cavity is arranged above the pyrolysis cavity. The upper feeding cavity, the pyrolysis cavity and the separation cavity are arranged, heat transfer of the industrial sludge is carried out by using the heat carrier, the pyrolysis effect can be improved, the rotating of the charging cylinder body during movement can improve the mixing uniformity of the mixed material, the charging cylinder body can be unfolded or folded by the electric telescopic rods during pyrolysis, and local overheating of the mixed material to cause coking can be prevented.

Description

Technical Field

[0001] This invention discloses a pyrolysis hydrogen production device for citric acid industrial sludge, belonging to the field of chemical equipment technology. Background Technology

[0002] Citric acid industrial sludge is a solid waste generated during the production of citric acid. Pyrolysis is a process in which organic matter is heated to a certain temperature under anaerobic or oxygen-deficient conditions, causing it to decompose into gaseous, liquid, and solid products. In the pyrolysis of citric acid industrial sludge, the organic matter in the sludge decomposes at high temperatures, producing gases such as hydrogen, carbon monoxide, and carbon dioxide. The hydrogen production from the pyrolysis of citric acid industrial sludge can achieve sludge reduction and harmless treatment. The produced hydrogen can be used as a clean energy source, which has high economic value. It can also recover organic matter and energy from the sludge, realizing the recycling of resources.

[0003] Existing pyrolysis hydrogen production units cannot fully decompose the organic matter in the sludge, resulting in low hydrogen production. The material is prone to coking during the pyrolysis process, leading to uneven heat transfer and reduced reaction efficiency. Coking requires periodic shutdowns for manual cleaning, which not only affects the continuous operation time of the unit but also increases maintenance workload and costs. The pyrolysis process also has a slow temperature rise and consumes a lot of energy.

[0004] Therefore, there is an urgent need to provide a pyrolysis hydrogen production device for citric acid industrial sludge to solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, the present invention provides a pyrolysis hydrogen production device for citric acid industrial sludge.

[0006] The present invention is achieved through the following technical solution: a pyrolysis hydrogen production device for citric acid industrial sludge, comprising a chassis, characterized in that: a feeding chamber, a pyrolysis chamber, and a separation chamber are sequentially arranged inside the chassis; a loading assembly for loading industrial sludge and a heat carrier is provided inside the chassis; and conveyor belts for driving the loading assembly to move horizontally along the feeding chamber, the pyrolysis chamber, and the separation chamber are provided on the inner walls of both sides of the chassis.

[0007] The charging assembly includes a foldable and rotatable charging cylinder. Both ends of the charging cylinder are provided with a first electric telescopic rod for driving the charging cylinder to unfold or retract. The pyrolysis chamber is provided with an electric heating plate. The charging cylinder is unfolded and laid flat on the electric heating plate in the pyrolysis chamber by the first electric telescopic rod to produce hydrogen through pyrolysis. A purification chamber is provided above the pyrolysis chamber, and a purification and separation assembly is provided in the purification chamber.

[0008] The loading assembly mixes the industrial sludge and heat carrier loaded therein by rotating within the feeding chamber. The loading assembly separates the pyrolyzed industrial sludge waste residue and heat carrier within the separation chamber. The loading assembly is equipped with a separation component for separating the industrial sludge waste residue and heat carrier. The inner walls of both the feeding chamber and the separation chamber are fixedly provided with a first rack for driving the loading cylinder to rotate when it moves horizontally. The end of the loading cylinder is correspondingly provided with a gear that can mesh with the first rack.

[0009] In this invention, the loading cylinder of the loading assembly can be expanded or retracted under the drive of the first electric telescopic rod. When the loading cylinder is retracted, it can be loaded with materials. During operation, the loading cylinder is in the retracted state within the feeding chamber, containing industrial sludge and a heat carrier. As the loading assembly is moved horizontally by the conveyor belt, it rotates through the meshing of a first rack in the feeding chamber and a gear at the end of the loading cylinder. This rotation mixes the industrial sludge and heat carrier inside. When the loading assembly moves into the pyrolysis chamber, the loading cylinder is expanded and laid flat on the heating plate by the first electric telescopic rod. Pyrolysis is then performed by heating the heating plate. During pyrolysis, the mixture is continuously expanded and retracted to prevent localized overheating and coking. The pyrolysis gas enters the purification chamber for treatment, where it is processed by a purification and separation component to obtain hydrogen. After pyrolysis, the loading cylinder of the loading assembly is retracted and moved horizontally to the separation chamber by a conveyor belt. The industrial sludge and waste residue and the heat carrier in the loading cylinder are separated by the separation component.

[0010] Furthermore, an industrial sludge storage bin and a heat carrier storage bin are provided on the top of the casing above the feeding chamber, and a waste residue hopper and a heat carrier hopper are provided on the bottom of the casing below the separation chamber. Electric lifting doors are provided on both sides of the pyrolysis chamber. Industrial sludge and heat carrier can be loaded into the loading cylinder through the industrial sludge storage bin and the heat carrier storage bin, respectively.

[0011] Furthermore, a first rotating shaft is fixedly provided at both ends of the loading cylinder, and a first bearing seat is provided at the end of the first rotating shaft. The first bearing seat is fixed on the conveyor belt; the first gear that meshes with the first rack is fixed on the corresponding first rotating shaft.

[0012] Furthermore, the loading cylinder includes a bottom plate, with multiple side plates hinged to both sides of the bottom plate. Side plates on the same side are sequentially hinged together, and a top plate is hinged to the outermost side plate. End plates are fixedly mounted at both ends of the bottom plate, with a counterweight fixed at the end of each end plate near the bottom plate. Two first rotating shafts are fixedly connected to the two end plates respectively. Protruding plates are fixedly mounted on the inner walls of the bottom plate, side plates, and top plate. Movable plates slide on the inner walls of the side plates, and filter holes are provided on both the movable plates and the side plates. A drive mechanism capable of moving the movable plates is provided on the inner wall of the separation chamber. The protruding plates on the inner walls of the bottom plate, side plates, and top plate are used to lift the material during the rotation of the loading cylinder, enhancing the mixing effect. The filter holes on the movable plates and side plates are used to separate industrial sludge and heat carrier. When the filter holes overlap, the industrial sludge can be separated through the filter holes.

[0013] Furthermore, the driving mechanism that moves the movable plate is a magnetic plate fixedly installed on the inner wall of the separation chamber. One end of the movable plate is provided with a magnetic block that repels the magnetic plate, and the other end of the movable plate is provided with a spring. The magnetic plate and the magnetic block repel each other to drive the filter holes of the movable plate to coincide with the filter holes of the side plate.

[0014] Furthermore, the movable end of the first electric telescopic rod is hinged to the top plate, and the fixed end of the first electric telescopic rod is hinged to the end plate.

[0015] Furthermore, the pyrolysis chamber is also provided with a rotating mechanism for driving the loading cylinder to rotate; the rotating mechanism includes a motor and a second gear fixed on the output shaft of the motor, the second gear meshing with the first gear.

[0016] Furthermore, the separation chamber is equipped with multiple equally spaced striking mechanisms for impacting the loading assembly during its movement. Each striking mechanism includes a second rotating shaft horizontally positioned within the separation chamber and multiple striking rods equally spaced on the second rotating shaft. Both ends of the second rotating shaft are provided with second bearing seats for support. The second rotating shaft is equipped with a torsion spring and a third gear. A bracket is fixed to the first bearing seat, and multiple equally spaced second racks are fixed to the top of the bracket to drive the third gear. When the first bearing seat moves under the drive of the conveyor belt, it simultaneously drives the second racks to move via the bracket fixed to it. When the second racks mesh with the third gear on the second rotating shaft, they drive the second rotating shaft to rotate, torsioning the torsion spring on the second rotating shaft. The second rotating shaft then drives the striking rods to rotate. When the second racks separate from the third gear, the striking rods return to their original position under the restoring force of the torsion spring, striking the surface of the loading cylinder. This striking mechanism improves the separation effect of industrial sludge and waste residue from the heat carrier and also separates the mixture from the loading cylinder.

[0017] Furthermore, a leveling assembly is provided above the heating plate for leveling the material inside the loading cylinder when it is laid flat. The leveling assembly includes a scraper plate, and above the scraper plate is a second electric telescopic rod for driving its lifting and lowering. Above the second electric telescopic rod is a translation mechanism for driving its horizontal movement. The scraper plate can be raised and lowered by the second electric telescopic rod, and the translation mechanism can drive the second electric telescopic rod and the scraper plate to move horizontally, thereby leveling the material inside the loading cylinder when it is laid flat.

[0018] Furthermore, the purification and separation assembly is rotatably disposed within the purification chamber. The purification and separation assembly includes a rotating cylinder with a central hole at its center. Multiple through holes are evenly distributed around the central hole and extend vertically. A purification filter element is disposed at the lower end of each through hole, and a separation membrane is disposed at the upper end. A flow channel is provided between the separation membrane and the purification filter element to connect the central hole and the through holes. Multiple gas supply pipes are provided between the purification chamber and the pyrolysis chamber to connect the two. The extension line of the gas supply pipe's outlet end is tangent to the rotating cylinder to drive its rotation. Other gas output pipes and a hydrogen output pipe are provided on the top of the casing. The other gas output pipes are connected to the central hole, and the hydrogen output pipes are connected to the multiple through holes.

[0019] The beneficial effects of this invention are: 1. By setting up a feeding chamber, a pyrolysis chamber, and a separation chamber, this invention utilizes a heat carrier to preheat industrial sludge during the transportation process, thereby improving the subsequent pyrolysis effect. During the pyrolysis heating process, the heat carrier can transfer heat to the industrial sludge, enabling the sludge to heat up more quickly. At the same time, the heat carrier also plays a role in dispersing the industrial sludge and preventing clumping during rotation and stirring. This device can realize the automated mixing and separation of industrial sludge and heat carrier, greatly improving production efficiency.

[0020] 2. This invention features a foldable and rotatable loading cylinder. The rotation of the cylinder during translation allows for more uniform mixing of the industrial sludge and heat carrier, enhancing heat and mass transfer, resulting in more complete pyrolysis and improved reaction efficiency. During pyrolysis, the loading cylinder is laid flat on the heating plate, increasing the heating area and ensuring sufficient contact between the industrial sludge and the heating surface, guaranteeing uniform heat transfer. Continuously unfolding and retracting the loading cylinder during pyrolysis further mixes the material, preventing localized overheating and coking that could affect the pyrolysis effect.

[0021] 3. By setting up a rotatable purification and separation component, the present invention utilizes airflow to drive the purification and separation component to rotate, which can enhance the flow state of the gas. The pyrolysis gas will form a dynamic state in the purification chamber, which can make the pyrolysis gas evenly distributed throughout the purification chamber, which helps the gas to better contact the purification filter and separation membrane, thereby improving the hydrogen separation efficiency, thereby improving the hydrogen purity and reducing the energy consumption of subsequent gas purification.

[0022] 4. By setting up a knocking mechanism, the present invention can improve the separation effect of industrial sludge and waste residue from the heat carrier, and can also separate the mixture from the charging cylinder to prevent the material from adhering to the charging cylinder. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the loading assembly structure of the present invention;

[0025] Figure 3 This is a cross-sectional view of the charging cylinder of the present invention;

[0026] Figure 4 This is a schematic diagram of the exploded structure of the charging cylinder of the present invention;

[0027] Figure 5 This is a schematic diagram of the movable plate structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection of the first electric telescopic rod of the present invention;

[0029] Figure 7 This is a schematic diagram of the heating plate and leveling assembly structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the purification and separation component structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the assembly structure of the purification and separation component and the gas transmission pipe of the present invention;

[0032] Figure 10 This is a schematic diagram of the striking mechanism structure of the present invention;

[0033] In the picture:

[0034] 1. Chassis; 101. Feeding Chamber; 102. Pyrolysis Chamber; 103. Separation Chamber; 104. Electric Lifting Door; 105. Conveyor Belt; 106. First Rack; 107. Gas Pipe; 108. Other Gas Output Pipe; 109. Hydrogen Output Pipe; 110. Magnetic Plate; 111. Waste Residue Discharge Hopper; 112. Heat Carrier Discharge Hopper; 2. Industrial Sludge Storage Tank; 3. Heat Carrier Storage Tank; 4. Loading Assembly; 401. Loading Cylinder; 401a. Bottom Plate; 401b. Side Plate; 401c. Top Plate; 401d. Convex Plate; 401e. Movable Plate; 401f. End Plate; 401g. Spring; 401h. Magnetic Block; 402. First rotating shaft; 403, first bearing seat; 404, first gear; 405, bracket; 406, second rack; 407, first electric telescopic rod; 408, counterweight; 5, heating plate; 6, leveling assembly; 601, scraper plate; 602, second electric telescopic rod; 603, translation mechanism; 7, rotation mechanism; 701, motor; 702, second gear; 8, purification and separation assembly; 801, rotating drum; 802, through hole; 803, purification filter element; 804, separation membrane; 805, center hole; 806, flow channel; 9, striking mechanism; 901, second rotating shaft; 902, striking rod; 903, second bearing seat; 904, third gear. Detailed Implementation

[0035] The invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0036] Example 1

[0037] To address the issues of slow temperature rise, easy adhesion and clumping of industrial sludge in existing pyrolysis hydrogen production units, resulting in unsatisfactory pyrolysis efficiency and effectiveness, please refer to... Figures 1-2This invention provides a pyrolysis hydrogen production device for citric acid industrial sludge, comprising a casing 1, within which a feeding chamber 101, a pyrolysis chamber 102, and a separation chamber 103 are sequentially arranged. The casing 1 contains a loading assembly 4 for loading industrial sludge and a heat carrier. Conveyor belts 105 are respectively installed on the inner walls of both sides of the casing 1 to drive the loading assembly 4 to move along the feeding chamber 101, the pyrolysis chamber 102, and the separation chamber 103. The conveyor belts 105 are made of high-temperature resistant materials, such as stainless steel, ceramic fiber, silicon carbide, or other materials suitable for production. The loading assembly 4 includes a foldable and rotatable loading cylinder 401, with first electric telescopic rods 407 at both ends of the loading cylinder 401 for driving its expansion or contraction. The pyrolysis chamber 102 is equipped with a heating plate 5. The charging cylinder 401, located within the pyrolysis chamber 102, can be unfolded and laid flat on the heating plate 5 via a first electric telescopic rod 407 for hydrogen production through pyrolysis. The charging cylinder 401 can also be continuously unfolded or retracted within the pyrolysis chamber 102 via the first electric telescopic rod 407 to prevent coking. The heating plate 5 is mounted within the pyrolysis chamber 102 via a support structure. To prevent interference between the charging cylinder 401 and the heating plate 5 when it is retracted and rotated, the support structure of the heating plate 5 can be configured as a lifting structure. A purification chamber is located above the pyrolysis chamber 102, containing a purification and separation component used to purify and separate hydrogen from the pyrolysis gas. The loading assembly 4 loads industrial sludge and heat carrier into the feeding chamber 101, and can mix the industrial sludge and heat carrier loaded therein by rotating itself. The loading assembly 4 separates the pyrolyzed industrial sludge waste residue and heat carrier in the separation chamber 103. The loading assembly 4 is equipped with a separation component for separating the industrial sludge waste residue and heat carrier. The inner walls of both the feeding chamber 101 and the separation chamber 103 are fixedly provided with a first rack 106 for driving the loading cylinder 401 to rotate when it translates. The end of the loading cylinder 401 is correspondingly provided with a gear that can mesh with the first rack 106.

[0038] To facilitate the loading of industrial sludge and heat carrier by the loading assembly 4, in this embodiment, an industrial sludge storage bin 2 and a heat carrier storage bin 3 are provided on the top of the casing 1 above the loading chamber 101. The heat carrier storage bin 3 is equipped with a heating assembly for heating the heat carrier. To facilitate the separation and collection of industrial sludge waste and heat carrier, a waste sludge discharge hopper 111 and a heat carrier discharge hopper 112 are provided at the bottom of the casing 1 below the separation chamber 103. To facilitate the passage of the loading assembly, electric lifting doors 104 are provided on both sides of the pyrolysis chamber 102. The heat carrier can absorb and store a large amount of heat, and then transfer the heat to industrial sludge. The heat carrier used in this invention is a prior art technology. The heat carrier can be ceramic particles or other particles with equivalent effects, preferably ceramic particles. Ceramic particles have high heat capacity and good thermal stability, and can retain heat for a long time at high temperatures. When ceramic particles are mixed with citric acid industrial sludge, during the pyrolysis heating process, the ceramic particles transfer heat to the industrial sludge, allowing the sludge to heat up more quickly. The ceramic particles also play a role in dispersing the industrial sludge, preventing clumping during rotation and stirring. The heat carrier preheats the industrial sludge during transportation, ensuring that the industrial sludge reaches a certain temperature before entering the pyrolysis chamber 102. This allows it to reach the reaction temperature more quickly during the actual pyrolysis, shortening the induction period of the pyrolysis reaction, increasing the hydrogen production rate, and improving the pyrolysis effect.

[0039] In this embodiment, a first rotating shaft 402 is fixedly provided at both ends of the loading cylinder 401. The end of each first rotating shaft 402 is provided with a first bearing seat 403 to support its rotation. The two first bearing seats 403 are respectively fixedly connected to the conveyor belts 105 on both sides. A first gear 404 is fixedly provided on the first rotating shaft 402, and the first gear 404 is used to mesh with a first rack 106. During the movement of the loading cylinder 401 via the conveyor belt 105, the first gear 404 can mesh with the first rack 106. Through meshing transmission, the first gear 404 can be driven to rotate, thereby driving the loading cylinder 401 to rotate. This allows the loading cylinder 401 to tumble during movement, and through stirring, the industrial sludge and heat carrier can be more evenly distributed within the loading cylinder 401.

[0040] like Figures 3-6As shown, the loading cylinder 401 includes a bottom plate 401a, with multiple side plates 401b hinged to both sides of the bottom plate 401a. The side plates 401b on the same side are sequentially hinged together, and a top plate 401c is hinged to the outermost side plate 401b on each side. End plates 401f are fixedly provided at both ends of the bottom plate 401a, and two first rotating shafts 402 are fixedly connected to the two end plates 401f respectively. A counterweight 408 is fixedly provided at the end of the end plate 401f closest to the bottom plate 401a. At least one inwardly protruding convex plate 401d is fixedly provided on the inner wall of the bottom plate 401a, side plates 401b, and top plate 401c. The convex plate 401d enhances the stirring effect, allowing the material to be lifted during the rotation of the loading cylinder 401. In this embodiment, two side plates 401b are hinged to both sides of the bottom plate 401a, and the end plate 401f is hexagonal. The movable end of the first electric telescopic rod 407 is hinged to the top plate 401c, and the fixed end of the first electric telescopic rod 407 is hinged to the end plate 401f. When the loading cylinder 401 needs to be unfolded, the first electric telescopic rods 407 at both ends of the loading cylinder 401 drive the side plates 401b and the top plate 401c on both sides to gradually unfold. During pyrolysis, the loading cylinder 401 is laid flat on the heating plate 5 to increase the heating area, ensure that the industrial sludge can fully contact the heating surface, and ensure uniform heat transfer.

[0041] To facilitate the separation of pyrolysis-derived industrial sludge and heat carrier, in this embodiment, a movable plate 401e is slidably mounted on the inner wall of the side plate 401b. The movable plate 401e is positioned within a groove on the inner wall of the side plate 401b. Both the movable plate 401e and the side plate 401b are provided with filter holes, the size of which is smaller than that of the heat carrier. A spring 401g is mounted at one end of the movable plate 401e, and a magnetic block 40 is mounted at the other end. 1h, the movable plate 401e is provided with one end of the spring 401g cooperating with the inner end of the slide groove on the side plate 401b, and one end of the magnetic block 401h is located outside the slide groove on the side plate 401b and protrudes from the end plate 401f on that side; a magnetic plate 110 is fixedly provided on the inner wall of the separation cavity 103, and the magnetic plate 110 and the magnetic block 401h repel each other to drive the filter hole of the movable plate 401e to coincide with the filter hole of the side plate 401b. When the loading cylinder 401 moves to the magnetic plate 110, the magnetic plate 110 exerts a repulsive force on the magnetic block 401h, thus driving the movable plate 401e to move away from the magnetic plate 110. At this time, the filter holes of the movable plate 401e gradually overlap with the filter holes of the side plate 401b. Since the size of the filter holes is smaller than that of the heat carrier, the industrial sludge can fall through the filter holes to achieve the separation of the heat carrier and the industrial sludge.

[0042] like Figure 7As shown, to improve the pyrolysis effect, in this embodiment, a leveling component 6 can be provided above the heating plate 5 for leveling the material inside the loading cylinder 401 in its flat state. Above the scraper plate 601 is a second electric telescopic rod 602 for driving its lifting and lowering, and above the second electric telescopic rod 602 is a translation mechanism 603 for driving its horizontal movement. The second electric telescopic rod 602 can drive the scraper plate 601 to lift and lower, and the translation mechanism 603 can drive the scraper plate 601 to move horizontally, leveling the mixture when the scraper plate 601 moves horizontally. The translation mechanism 603 can adopt various translation structures in the prior art, such as a lead screw pair structure. The second electric telescopic rod 602 can be connected to the lead screw nut, and the translation is driven by the rotation of the lead screw.

[0043] To facilitate the rotation of the loading cylinder 401 within the pyrolysis chamber 102, in this embodiment, a rotating mechanism 7 for driving the loading cylinder 401 to rotate is also provided within the pyrolysis chamber 102. The rotating mechanism 7 includes a motor 701 and a second gear 702 fixed to the output shaft of the motor 701. The second gear 702 meshes with a first gear 404 at the end of the loading cylinder. The motor 701 drives the second gear 702 to rotate, which in turn drives the first gear 404 to rotate, thereby rotating the loading cylinder 401. This allows the loading cylinder 401 to tumble within the pyrolysis chamber 102, preventing materials from adhering together during pyrolysis. The heating plate 5 is supported by a lifting support platform (not shown in the figure). When the rotating mechanism 7 drives the loading cylinder 401 to rotate, the heating plate 5 can be lowered via the support platform to prevent collision between the loading cylinder 401 and the heating plate 5 during rotation.

[0044] In operation, within the feeding chamber 101, the first electric telescopic rod 407 partially unfolds the loading cylinder 401 to form a strip-shaped opening for loading. Industrial sludge from the industrial sludge storage silo 2 and heat carrier from the heat carrier storage silo 3 fall into the loading cylinder 401 through the strip-shaped opening. Driven by the conveyor belt 105, the loading cylinder 401 is moved horizontally into the pyrolysis chamber 102. During this horizontal movement, the loading cylinder 401 continuously rotates through the meshing of gears and racks to mix the industrial sludge and heat carrier. Inside the pyrolysis chamber 102, the first electric telescopic rod 407 lays the loading cylinder 401 flat onto the heating plate 5. The leveling component 6 levels the mixture, and the heating plate 5 heats the mixture for pyrolysis. The pyrolysis gas is transported through a pipeline to the purification chamber, where it is processed by the purification and separation component 8 to obtain hydrogen. During pyrolysis, the loading cylinder 401 is folded by the first electric telescopic rod 407 and then driven to rotate by the rotating mechanism 7. The mixture is then leveled by the scraping component 6. This process is repeated at least three times to prevent local overheating of the mixture, which could lead to coking and affect the pyrolysis effect. After pyrolysis, the loading cylinder 401 is retracted and moved horizontally into the separation chamber 103 by the conveyor belt 105. During the horizontal movement, the filter holes of the movable plate 401e are aligned with the filter holes of the side plate 401b by the magnetic plate 110. The loading cylinder 401 rotates continuously during the horizontal movement to separate industrial sludge and heat carrier. The industrial sludge falls through the filter holes and is discharged from the waste hopper 111. The first electric telescopic rod 407 then partially unfolds the loading cylinder 401 to form a strip-shaped opening for material discharge, and the heat carrier is discharged from the heat carrier hopper 112.

[0045] The other parts in this embodiment are all existing technologies and will not be described in detail here.

[0046] Example 2

[0047] Based on Example 1, in order to improve the purification and separation effect of pyrolysis gas, such as Figures 8-9As shown, in this embodiment, the purification and separation component 8 is rotatably disposed within the purification chamber. The purification and separation component 8 can be rotatably disposed within the purification chamber via a bracket. The purification and separation component 8 includes a rotating cylinder 801. A central hole 805 is provided at the center of the rotating cylinder 801. Multiple vertically penetrating through holes 802 are evenly distributed around the central hole 805. A purification filter element 803 is provided at the lower end of the through hole 802. The purification filter element 803 can be made of activated carbon, molecular sieves, or other components or combinations thereof. A separation membrane 804 is provided at the upper end of the through hole 802. A flow channel 806 is provided between the separation membrane 804 and the purification filter element 803 to connect the central hole 805 and the through hole 802. Multiple gas supply pipes 107 are provided between the purification chamber and the pyrolysis chamber 102 to connect the two. The extension line of the gas outlet end of the gas supply pipe 107 is tangent to the rotating cylinder 801 to drive the rotating cylinder 801 to rotate. The top of the chassis 1 is provided with an other gas output pipe 108 and a hydrogen output pipe 109. The other gas output pipe 108 is connected to the central hole 805, and the hydrogen output pipe 109 is connected to multiple through holes 802.

[0048] During operation, the pyrolysis gas in the pyrolysis chamber 102 enters the purification chamber through the gas supply pipe 107. Since the extension lines of the outlet ends of multiple gas supply pipes 107 are tangent to the rotating drum 801, the rotating drum 801 is driven to rotate under the impact of the airflow, so that the pyrolysis gas is evenly distributed throughout the purification chamber, improving the subsequent purification and separation effect, thereby increasing the purity of hydrogen and reducing the energy consumption of subsequent gas purification. The pyrolysis gas is first purified by the purification filter element 803 to remove impurities, acidic gases (such as hydrogen sulfide, hydrogen chloride, etc.), solid particles, etc. The purified gas is then separated by the separation membrane 804 to separate hydrogen from other gases (such as carbon monoxide, methane, etc.) to obtain high-purity hydrogen. The hydrogen is discharged from the hydrogen output pipe 109, and other gases enter the central hole 805 through the flow channel 806 and are discharged from the other gas output pipe 108.

[0049] The purification filter element 803 and the separation membrane 804 in this embodiment are both existing technologies. The separation membrane 804 can be an organic polymer membrane or an inorganic membrane, such as a polyimide membrane or a palladium membrane.

[0050] The other parts in this embodiment are all existing technologies and will not be described in detail here.

[0051] Example 3

[0052] Based on Examples 1 and 2, to prevent industrial sludge and waste residue from adhering together with the heat carrier and to prevent the mixture from adhering to the inner wall of the charging cylinder 401, thus affecting separation, as follows: Figure 1 , Figure 10As shown, in this embodiment, a plurality of equally spaced striking mechanisms 9 are also provided in the separation chamber 103 for striking during the movement of the loading assembly 4. Through the striking of the striking mechanisms 9, the industrial sludge waste residue is dispersed from the heat carrier, and the mixture is dispersed from the loading cylinder 401, thereby improving the separation efficiency and effect of the industrial sludge waste residue and the heat carrier.

[0053] The striking mechanism 9 includes a second rotating shaft 901 horizontally disposed within the separation chamber 103 and a plurality of striking rods 902 equally spaced on the second rotating shaft 901. Both ends of the second rotating shaft 901 are provided with second bearing seats 903 for support. A torsion spring and a third gear 904 are sleeved on the second rotating shaft 901. A bracket 405 is fixedly mounted on the first bearing seat 403, and a plurality of second racks 406 equally spaced on the top of the bracket 405 for driving the third gear 904 to rotate.

[0054] During operation, within the separation chamber 103, as the first bearing seat 403 moves under the drive of the conveyor belt 105, the first bearing seat 403 drives the support 405 and its top second rack 406 to move. When the second rack 406 meshes with the third gear 904 on the second rotating shaft 901, it drives the shaft to rotate. The third gear 904 drives the second rotating shaft 901 to rotate, at which point the torsion spring is twisted. The second rotating shaft 901 drives the striking rod 902 to rotate. As the second rack 406 continues to move, when the second rack 406 separates from the third gear 904, under the restoring force of the torsion spring, the striking rod 902 rotates to reset and strikes the surface of the loading cylinder 401.

[0055] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A pyrolysis hydrogen production device for citric acid industrial sludge, comprising a casing (1), characterized in that: The machine housing (1) is provided with a feeding chamber (101), a pyrolysis chamber (102), and a separation chamber (103) in sequence. The machine housing (1) is provided with a loading assembly (4) for loading industrial sludge and heat carrier. The inner walls on both sides of the machine housing (1) are provided with conveyor belts (105) for driving the loading assembly (4) to move along the feeding chamber (101), the pyrolysis chamber (102), and the separation chamber (103). The loading assembly (4) includes a foldable and rotatable loading cylinder (401). Both ends of the loading cylinder (401) are provided with a first electric telescopic rod (407) for driving the loading cylinder (401) to unfold or retract. The pyrolysis chamber (102) is provided with an electric heating plate (5). The loading cylinder (401) is unfolded and laid flat on the electric heating plate (5) in the pyrolysis chamber (102) by the first electric telescopic rod (407) to produce hydrogen through pyrolysis. A purification chamber is provided above the pyrolysis chamber (102), and a purification separation assembly (8) is provided in the purification chamber. The loading assembly (4) mixes the industrial sludge and heat carrier loaded therein by rotating itself in the loading chamber (101). The loading assembly (4) separates the pyrolyzed industrial sludge waste residue and heat carrier in the separation chamber (103). The loading assembly (4) is provided with a separation component for separating the industrial sludge waste residue and heat carrier. The inner walls of the loading chamber (101) and the separation chamber (103) are both fixedly provided with a first rack (106) for driving the loading cylinder (401) to rotate itself when it is translated. The end of the loading cylinder (401) is provided with a gear that can mesh with the first rack. The loading cylinder (401) has a first rotating shaft (402) fixedly installed at both ends; the loading cylinder (401) includes a bottom plate (401a), and multiple side plates (401b) are hinged to both sides of the bottom plate (401a). The side plates (401b) on the same side are connected to each other in sequence by hinge. A top plate (401c) is hinged to the outermost side plate (401b). End plates (401f) are fixedly installed at both ends of the bottom plate (401a). A counterweight (408) is fixedly installed at the end of the end plate (401f) near the bottom plate (401a); the two first rotating shafts (402) are fixedly connected to the two end plates (401f) respectively. The inner walls of the bottom plate (401a), side plate (401b), and top plate (401c) are all fixedly provided with protruding plates (401d). A movable plate (401e) is slidably provided on the inner wall of the side plate (401b). Both the movable plate (401e) and the side plate (401b) are provided with filter holes. The inner wall of the separation chamber (103) is provided with a driving mechanism that can drive the movable plate (401e) to move. The driving mechanism that moves the movable plate (401e) is a magnetic plate (110) fixedly installed on the inner wall of the separation chamber (103). One end of the movable plate (401e) is provided with a magnetic block (401h) that repels the magnetic plate (110), and the other end of the movable plate (401e) is provided with a spring (401g). The magnetic plate (110) and the magnetic block (401h) repel each other to drive the filter holes of the movable plate (401e) to coincide with the filter holes of the side plate (401b).

2. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 1, characterized in that: An industrial sludge storage silo (2) and a heat carrier storage silo (3) are provided on the top of the casing (1) above the feeding chamber (101). A waste slag discharge hopper (111) and a heat carrier discharge hopper (112) are provided at the bottom of the casing (1) below the separation chamber (103). Electric lifting doors (104) are provided on both sides of the pyrolysis chamber (102).

3. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 1, characterized in that: The first shaft (402) has a first bearing seat (403) at its end, and the first bearing seat (403) is fixed on the conveyor belt (105); the first gear (404) meshing with the first rack is fixed on the corresponding first shaft (402).

4. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 1, characterized in that: The movable end of the first electric telescopic rod (407) is hinged to the top plate (401c), and the fixed end of the first electric telescopic rod (407) is hinged to the end plate (401f).

5. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 3, characterized in that: The pyrolysis chamber (102) is also provided with a rotating mechanism (7) for driving the loading cylinder (401) to rotate. The rotating mechanism (7) includes a motor (701) and a second gear (702) fixed on the output shaft of the motor (701), the second gear (702) meshing with the first gear (404).

6. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 3, 4, or 5, characterized in that: The separation chamber (103) is also provided with a plurality of equally spaced striking mechanisms (9) for striking the loading assembly (4) during its movement. The striking mechanism (9) includes a second rotating shaft (901) arranged laterally in the separation chamber (103) and a plurality of striking rods (902) arranged at equal intervals on the second rotating shaft (901). Both ends of the second rotating shaft (901) are provided with second bearing seats (903) for support. The second rotating shaft (901) is provided with a torsion spring and a third gear (904). A bracket (405) is fixedly provided on the first bearing seat (403), and a plurality of second racks (406) are fixedly provided on the top of the bracket (405) for driving the third gear (904) to rotate.

7. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 1, characterized in that: Above the heating plate (5) is a scraping component (6) for scraping the material inside the loading cylinder (401) in a flat state. The leveling assembly (6) includes a scraper plate (601), and a second electric telescopic rod (602) for driving its lifting and lowering is provided above the scraper plate (601). A translation mechanism (603) for driving its horizontal movement is provided above the second electric telescopic rod (602).

8. The pyrolysis hydrogen production device for citric acid industrial sludge according to claim 1, characterized in that: The purification and separation component (8) is rotatably disposed in the purification chamber. The purification and separation component (8) includes a rotating cylinder (801). A central hole (805) is provided at the center of the rotating cylinder (801). A plurality of through holes (802) are evenly distributed around the central hole (805) and are vertically connected. A purification filter element (803) is provided at the lower end of the inside of the through hole (802). A separation membrane (804) is provided at the upper end of the inside of the through hole (802). A flow channel (806) for connecting the central hole (805) and the through hole (802) is provided between the separation membrane (804) and the purification filter element (803). A plurality of gas supply pipes (107) are provided between the purification chamber and the pyrolysis chamber (102) for connecting the two. The extension line of the gas supply pipe (107) outlet end is tangent to the rotating drum (801) to drive the rotating drum (801) to rotate. The top of the chassis (1) is provided with other gas output pipe (108) and hydrogen output pipe (109). The other gas output pipe (108) is connected to the central hole (805), and the hydrogen output pipe (109) is connected to multiple through holes (802).

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