Biomass energy gasification hydrogen production device

Abstract

The utility model relates to the technical field of hydrogen production, and discloses a biomass energy gasification hydrogen production device which comprises a gasification furnace, a biomass feeding mechanism is arranged on one side of the gasification furnace, a drying mechanism is arranged on the outer side of the biomass feeding mechanism, and a crushing mechanism used for mincing biomass is arranged above the biomass feeding mechanism; through cooperation of the gasification furnace, the biomass feeding mechanism, the crushing mechanism, the drying mechanism and the turbulent flow mechanism, fed biomass raw materials can be rapidly crushed through the crushing mechanism, then the particle size of biomass is reduced, meanwhile, the biomass raw materials are dried by the drying mechanism when being conveyed into the gasification furnace, and moisture is reduced; therefore, when disturbed by the turbulent flow mechanism in the gasification furnace, the biomass can be in uniform contact with the gasification agent, so that the biomass combustion effect is improved, the generation efficiency of hydrogen mixed gas is improved, the hydrogen production amount is increased, and the efficiency of biomass gasification hydrogen production is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology, specifically a biomass energy gasification hydrogen production device. Background Technology

[0002] Hydrogen has the characteristics of high calorific value, cleanliness and pollution-free nature, and reducing properties. It is an important raw material for chemical industries such as ammonia synthesis, methanol production and petroleum refining. Internationally, hydrogen production mainly comes from fossil fuels, biomass and water. The main production processes include electrolysis, pyrolysis, photocatalysis, radioactive hydrolysis, plasma electrochemical method and biological hydrogen production.

[0003] In the prior art, Chinese utility model application number CN202120291848.X discloses a biomass gasification hydrogen production device, including a gasifier, a primary cyclone separator, a pyrolysis furnace, a heat recovery device, a secondary cyclone separator, a filter, a water washing unit, a desulfurization unit, a conversion unit, a pressure swing adsorption unit, a material return device, a steam drum, an ash hopper I, and a fly ash cooler; the gasifier is equipped with a distribution plate, and a biomass inlet is located above the distribution plate; a slag discharge ring pipe is connected to the central notch at the bottom of the distribution plate of the gasifier, and a gasifying agent spray pipe is located inside the slag discharge ring pipe; a gasifying agent inlet is located in the gas chamber area of ​​the gasifier; the upper part of the distribution plate of the gasifier consists of a dense phase section and a dilute phase section from bottom to top; the top outlet of the gasifier is connected to the inlet of the primary cyclone separator. This scheme greatly increases the primary conversion efficiency of fly ash and correspondingly reduces the amount of ineffective fly ash circulating between the gasifier and the primary cyclone separator;

[0004] However, in the existing technology for biomass gasification to produce hydrogen, the biomass and the gasifying agent come into direct contact and react chemically. This may lead to a decrease in reaction rate and conversion rate due to the large particle size of the biomass. Furthermore, the high moisture content in the biomass affects the hydrogen production. Therefore, we need to propose a biomass energy gasification hydrogen production device. Utility Model Content

[0005] The purpose of this invention is to provide a biomass energy gasification hydrogen production device, which facilitates the pre-crushing of biomass fed into the gasifier, thereby using smaller biomass particles, increasing the contact area between biomass and the gasifying agent, and simultaneously drying the biomass to reduce the moisture content, thereby increasing the hydrogen production rate and improving the efficiency of biomass hydrogen production, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biomass energy gasification hydrogen production device, including a gasifier, a biomass feeding mechanism on one side of the gasifier, a drying mechanism on the outside of the biomass feeding mechanism, a crushing mechanism for shredding the biomass above the biomass feeding mechanism, a turbulence mechanism in the inner cavity of the gasifier, a slag discharge mechanism at the bottom of the gasifier, a hydrogen mixed gas discharge pipe at the top of the gasifier, and multiple sets of gasifying agent valves at the bottom of the gasifier;

[0007] The biomass feeding mechanism includes a conveying pipe connected to the gasifier, a connecting cone pipe is provided on the outside of the conveying pipe, and a storage hopper for pre-storing biomass is provided at the upper end of the connecting cone pipe.

[0008] The crushing mechanism includes two sets of rotating shafts rotatably disposed inside the storage hopper. One end of each set of rotating shafts passes through the storage hopper and is equipped with a gear. The other end of one set of rotating shafts passes through the storage hopper and is driven by a second motor. Multiple layers of crushing blades are provided on the outer side of each set of rotating shafts.

[0009] Preferably, the multi-layer crushing blades on the two sets of rotating shafts are arranged alternately, and the multi-layer crushing blades are arranged at equal intervals, with multiple crushing blades in each layer.

[0010] Preferably, a feeding auger is rotatably provided inside the conveying pipe, and one end of the feeding auger passes through the conveying pipe and is driven by a first motor.

[0011] Preferably, the drying mechanism includes a sleeve fitted outside the conveying pipe, the sleeve having an insulated chamber inside, and an electric heating wire arranged in a spiral shape inside the insulated chamber.

[0012] Preferably, the turbulence mechanism includes a rotary motor and a vertical shaft. The upper end of the vertical shaft passes through the gasifier and is driven by the rotary motor. Multiple layers of stirring rods and multiple sets of connecting rods are arranged sequentially from top to bottom on the outer side of the vertical shaft. One end of each connecting rod is fixedly connected to a turbulence plate.

[0013] Preferably, each layer of stirring rods is provided with multiple stirring rods, and the multiple stirring rods are arranged at equal intervals and at equal angles.

[0014] Preferably, the slag discharge mechanism includes a slag discharge pipe connected to the gasifier, and a slag discharge auger is rotatably installed inside the slag discharge pipe. One end of the slag discharge auger passes through the slag discharge pipe and is driven by a third motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention mainly utilizes the coordination between a gasifier, a biomass feeding mechanism, a crushing mechanism, a drying mechanism, and a turbulence-inducing mechanism. The crushing mechanism rapidly crushes the fed biomass raw materials, thereby reducing the particle size. Simultaneously, the biomass is dried by the drying mechanism while being transported into the gasifier, reducing its moisture content. This allows for more uniform contact with the gasifying agent when agitated by the turbulence-inducing mechanism within the gasifier, thus improving the biomass combustion efficiency, increasing the hydrogen-mixed gas generation efficiency, and ultimately enhancing the efficiency of biomass gasification for hydrogen production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the gasifier of this utility model;

[0019] Figure 3 This is a schematic diagram of the crushing and drying mechanisms of this utility model.

[0020] In the diagram: 1. Gasifier; 2. Biomass feeding mechanism; 21. Conveying pipe; 22. Connecting cone pipe; 23. Storage hopper; 24. Feeding auger; 25. First motor; 3. Crushing mechanism; 31. Rotating shaft; 32. Gear; 33. Crushing blade; 34. Second motor; 4. Drying mechanism; 41. Sleeve; 42. Insulated chamber; 43. Electric heating wire; 5. Slag discharge mechanism; 51. Slag discharge pipe; 52. Slag discharge auger; 53. Third motor; 6. Gasifying agent valve; 7. Turbulence mechanism; 71. Rotary motor; 72. Vertical shaft; 73. Stirring rod; 74. Connecting rod; 75. Baffle plate; 8. Hydrogen-mixed gas discharge pipe. Detailed Implementation

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

[0022] Please see Figure 1-3 This utility model provides a technical solution: a biomass energy gasification hydrogen production device, including a gasifier 1, a biomass feeding mechanism 2 on one side of the gasifier 1, a drying mechanism 4 on the outside of the biomass feeding mechanism 2, a crushing mechanism 3 for crushing biomass above the biomass feeding mechanism 2, a turbulence mechanism 7 in the inner cavity of the gasifier 1, a slag discharge mechanism 5 at the bottom of the gasifier 1, a hydrogen mixed gas discharge pipe 8 at the top of the gasifier 1, and multiple sets of gasifying agent valves 6 at the bottom of the gasifier 1.

[0023] The biomass feeding mechanism 2 includes a conveying pipe 21 connected to the gasifier 1. A connecting cone pipe 22 is provided on the outside of the conveying pipe 21, and a storage hopper 23 for pre-storing biomass is provided at the upper end of the connecting cone pipe 22.

[0024] The crushing mechanism 3 includes two sets of rotating shafts 31 rotatably disposed in the inner cavity of the storage hopper 23. One end of each set of rotating shafts 31 passes through the storage hopper 23 and is equipped with a gear 32. The other end of one set of rotating shafts 31 passes through the storage hopper 23 and is driven by a second motor 34. Multiple layers of crushing blades 33 are provided on the outer side of each set of rotating shafts 31.

[0025] The multi-layer crushing blades 33 on the two sets of rotating shafts 31 are arranged alternately and at equal intervals. Each layer of crushing blades 33 has multiple blades. The alternating crushing blades 33 can crush biomass raw materials into fine particles more quickly, thereby increasing the contact area with the gasifying agent and improving the hydrogen production effect.

[0026] The inner cavity of the conveying pipe 21 is rotatably equipped with a feeding auger 24. One end of the feeding auger 24 passes through the conveying pipe 21 and is driven by the first motor 25. The feeding auger 24 driven by the first motor 25 facilitates the delivery of the crushed biomass raw materials to the gasifier 1, thereby improving the conveying efficiency of the biomass raw materials.

[0027] The drying mechanism 4 includes a sleeve 41 sleeved on the outside of the conveying pipe 21. The sleeve 41 has an insulated chamber 42 inside, and an electric heating wire 43 is installed in the insulated chamber 42. The electric heating wire 43 is arranged in a spiral shape. The electric heating wire 43 can evenly heat and dry the biomass in the conveying pipe 21, thereby reducing the moisture in the biomass and accelerating the gasification efficiency of the biomass.

[0028] The turbulence mechanism 7 includes a rotary motor 71 and a vertical shaft 72. The upper end of the vertical shaft 72 passes through the gasifier 1 and is driven by the rotary motor 71. Multiple layers of stirring rods 73 and multiple sets of connecting rods 74 are arranged sequentially from top to bottom on the outer side of the vertical shaft 72. One end of the connecting rod 74 is fixedly connected to a turbulence plate 75. The vertical shaft 72 is driven by the rotary motor 71 so that the stirring rods 73 and the turbulence plate 75 can agitate the biomass raw materials and gasifying agent, thereby accelerating the gasification efficiency of the biomass raw materials.

[0029] Each layer of stirring rods 73 is provided with multiple stirring rods, and the multiple stirring rods 73 are arranged at equal intervals and at equal angles. The multiple stirring rods 73 increase the stirring range, thereby accelerating the efficiency of biomass gasification to hydrogen production.

[0030] The slag discharge mechanism 5 includes a slag discharge pipe 51 connected to the gasifier 1. A slag discharge auger 52 is rotatably installed inside the slag discharge pipe 51. One end of the slag discharge auger 52 passes through the slag discharge pipe 51 and is driven by a third motor 53. The slag discharge auger 52 driven by the third motor 53 facilitates the discharge of waste slag and improves the efficiency of hydrogen production slag discharge.

[0031] In use, the biomass raw material first enters the storage hopper 23. Inside the storage hopper 23, the rotating shaft 31 driven by the second motor 34 drives the multi-layer crushing blades 33 to crush the raw material. The crushing blades 33 on the two sets of rotating shafts 31 are alternately arranged to improve the crushing effect and increase the contact area between the raw material and the gasifying agent. The crushed biomass raw material is then sent to the gasifier 1 through the conveying pipe 21 by the feeding auger 24 driven by the first motor 25. During the conveying process, the spiral electric heating wire 43 installed in the heat insulation chamber 42 of the sleeve 41 outside the conveying pipe 21 heats and dries the raw material, reduces moisture, and accelerates the subsequent gasification efficiency.

[0032] The biomass feedstock entering the gasifier 1 begins to gasify under the action of the gasifying agent introduced through the gasifying agent valve 6. The rotary motor 71 drives the vertical shaft 72, which in turn drives the multi-layer stirring rod 73 and the baffle 75 to rotate, stirring the biomass feedstock and the gasifying agent. The stirring rod 73 has a wide stirring range, which can accelerate the gasification efficiency. The hydrogen mixed gas produced by the reaction is discharged from the hydrogen mixed gas discharge pipe 8 at the top of the gasifier 1. The waste residue after the reaction is discharged through the slag discharge pipe 51 under the action of the slag discharge auger 52 driven by the third motor 53, which improves the slag discharge efficiency. The entire device realizes the process of gasifying biomass energy to produce hydrogen.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomass energy gasification hydrogen production device, comprising a gasifier (1), characterized in that: A biomass feeding mechanism (2) is provided on one side of the gasifier (1), a drying mechanism (4) is provided on the outside of the biomass feeding mechanism (2), a crushing mechanism (3) for shredding biomass is provided above the biomass feeding mechanism (2), a turbulence mechanism (7) is provided in the inner cavity of the gasifier (1), a slag discharge mechanism (5) is provided at the bottom of the gasifier (1), a hydrogen mixed gas discharge pipe (8) is provided at the top of the gasifier (1), and multiple gasifying agent valves (6) are provided at the bottom of the gasifier (1). The biomass feeding mechanism (2) includes a conveying pipe (21) connected to the gasifier (1), a connecting cone pipe (22) is provided on the outside of the conveying pipe (21), and a storage hopper (23) for pre-storing biomass is provided at the upper end of the connecting cone pipe (22). The crushing mechanism (3) includes two sets of rotating shafts (31) rotatably disposed in the inner cavity of the storage hopper (23). One end of each set of rotating shafts (31) passes through the storage hopper (23) and is equipped with a gear (32). The other end of one set of rotating shafts (31) passes through the storage hopper (23) and is driven by a second motor (34). Multiple layers of crushing blades (33) are provided on the outer side of each set of rotating shafts (31).

2. The biomass energy gasification hydrogen production device according to claim 1, characterized in that: The multi-layer crushing blades (33) on the two sets of rotating shafts (31) are arranged alternately and are equally spaced, with multiple crushing blades (33) in each layer.

3. The biomass energy gasification hydrogen production device according to claim 1, characterized in that: The inner cavity of the conveying pipe (21) is rotatably equipped with a feeding auger (24), one end of which passes through the conveying pipe (21) and is driven by a first motor (25).

4. The biomass energy gasification hydrogen production device according to claim 1, characterized in that: The drying mechanism (4) includes a sleeve (41) sleeved on the outside of the conveying pipe (21). The sleeve (41) has an insulated chamber (42) inside. An electric heating wire (43) is installed in the insulated chamber (42) and is arranged in a spiral shape.

5. The biomass energy gasification hydrogen production device according to claim 1, characterized in that: The turbulence mechanism (7) includes a rotary motor (71) and a vertical shaft (72). The upper end of the vertical shaft (72) passes through the gasifier (1) and is driven by the rotary motor (71). Multiple layers of stirring rods (73) and multiple sets of connecting rods (74) are arranged sequentially from top to bottom on the outer side of the vertical shaft (72). One end of the connecting rod (74) is fixedly connected to a turbulence plate (75).

6. The biomass energy gasification hydrogen production device according to claim 5, characterized in that: Each layer of stirring rods (73) is provided with multiple stirring rods, and the multi-layer stirring rods (73) are arranged at equal intervals, and the multiple stirring rods (73) are arranged at equal angles.

7. The biomass energy gasification hydrogen production device according to claim 1, characterized in that: The slag discharge mechanism (5) includes a slag discharge pipe (51) connected to the gasifier (1). A slag discharge auger (52) is rotatably installed inside the slag discharge pipe (51). One end of the slag discharge auger (52) passes through the slag discharge pipe (51) and is driven by a third motor (53).

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