A continuous steam explosion pretreatment device for lignin feedstock

Abstract

The utility model relates to lignin raw material processing pretreatment technical field, and specifically disclose a kind of continuous steam explosion pretreatment device for lignin raw material, including bottom plate, the bottom plate is connected with crushing device, the crushing device is connected with electric conveyor belt, the electric conveyor belt is connected with distributor, the distributor is connected with cloth tube, the cloth tube is connected with steam explosion tank, the steam explosion tank is connected with steam pipeline, the steam pipeline is connected with steam generator, the steam generator bottom and bottom plate fixed connection, the steam explosion tank is connected with discharge pipe, the discharge pipe is connected with collection tank, the collection tank is connected with gas phase export, the collection tank one side is connected with solid phase export, the distributor, steam explosion tank and collection tank bottom are all with bottom plate fixed connection.This is used for lignin raw material's continuous steam explosion pretreatment device, reaches the purpose that raw material particle size is consistent, effectively controls raw material humidity.

Description

Technical Field

[0001] This utility model relates to the field of lignin raw material processing and pretreatment technology, specifically a continuous steam explosion pretreatment device for lignin raw materials. Background Technology

[0002] my country possesses abundant lignocellulose resources, such as grasses, crop straw, and sugarcane bagasse, which contain cellulose, hemicellulose, and lignin. Cellulose and lignin, in particular, have high crystallinity. When using cellulase to hydrolyze ethanol and other biofuels, the enzymatic hydrolysis rate is typically very low without pretreatment. Therefore, effective pretreatment methods are needed to improve the usability of the raw materials. With the increasing demand for biomass resource development and conversion, there is a need for high-capacity, high-efficiency continuous steam explosion equipment to meet the requirements of large-scale industrial applications. Continuous equipment enables continuous production, reduces production and energy losses, increases capacity, lowers costs, and better adapts to the processing needs of different lignin raw materials.

[0003] The current continuous steam explosion pretreatment device for lignin raw materials has problems such as uneven steam entry due to different raw material particle sizes, and the influence of dryness and humidity on the treatment effect. Utility Model Content

[0004] To solve the above problems, this utility model is implemented through the following technical solution: a continuous steam explosion pretreatment device for lignin raw materials, including a base plate, a crushing device fixedly connected to the top of the base plate, an electric conveyor belt fixedly connected to one side of the crushing device, a feed end of a distributor fixedly connected to the side of the electric conveyor belt away from the crushing device, a distribution pipe connected to the discharge end of the distributor, a feed end of the distribution pipe connected to the feed end of a steam explosion tank, a steam pipe connected to the top of one side of the steam explosion tank, a steam generator connected to the end of the steam pipe away from the steam explosion tank, a bottom of the steam generator fixedly connected to the base plate, a discharge pipe connected to the discharge end of the steam explosion tank, a collection tank connected to the end of the discharge pipe away from the steam explosion tank, a gas phase outlet connected to the top of one side of the collection tank, a solid phase outlet connected to the bottom of the gas phase outlet on one side of the collection tank, and the bottoms of the distributor, the steam explosion tank, and the collection tank are all fixedly connected to the base plate;

[0005] The pulverizing device includes a housing, a pulverizing platform fixedly connected to one side of the inner wall of the housing, a filter screen fixedly connected to the top of the pulverizing platform, one side of the filter screen fixedly connected to the inner wall of the housing, a pulverizer fixedly connected to the portion of the inner wall of the housing above the pulverizing platform, a drying port opened on the portion of the inner wall of the housing on the side of the filter screen, a drying pipe connected to one side of the drying port, an air outlet of a hot air box connected to the end of the drying pipe away from the drying port, the bottom of the hot air box fixedly connected to the housing, an assembly groove opened on one side of the housing, and the hot air box can effectively dry raw materials and control humidity.

[0006] Preferably, the bottom of the outer casing is fixedly connected to the base plate, and one side of the inner wall of the outer casing is rotatably connected to the electric conveyor belt.

[0007] Preferably, the gas explosion tank includes a tank body, with an inlet on one side of the tank body and an outlet on the bottom of the side of the tank body away from the inlet. A motor is fixedly connected to the top of the tank body, and the drive shaft of the motor passes through the tank body and is fixedly connected to a rotating shaft. A stirring roller is fixedly connected to one side of the rotating shaft. A fixing plate is fixedly connected to the inner wall of the tank body above the inlet, and a cleaning device is fixedly connected to the bottom of the fixing plate. A reagent tank is fixedly connected to one side of the tank body, and a third pipe is connected to one side of the reagent tank. The end of the third pipe away from the reagent tank is connected to the inlet of a first water pump, and the outlet of the first water pump is connected to a fourth pipe. The fourth pipe passes through the tank body and is fixedly connected to the tank body. One side of the first water pump is fixedly connected to the tank body. The stirring roller can effectively stir the raw materials, so that the steam enters evenly.

[0008] Preferably, the top of one side of the tank is connected to a steam pipe, and the bottom of the tank is fixedly connected to a base plate.

[0009] Preferably, one side of the feed inlet is connected to the material distribution pipe, and the other side of the discharge outlet is connected to the discharge pipe.

[0010] Preferably, the cleaning device includes a water tank, a first pipe connected to one side of the water tank, an inlet of a second water pump connected to the end of the first pipe away from the water tank, a second pipe connected to the outlet of the second water pump, a distribution pipe connected to the end of the second pipe away from the second water pump, an infusion pipe connected to one side of the distribution pipe, and a nozzle connected to the end of the infusion pipe away from the distribution pipe. The second water pump can effectively draw water from the water tank.

[0011] Preferably, the top of the nozzle is fixedly connected to the fixing plate, the bottom of the liquid distribution pipe is fixedly connected to the fixing plate, the infusion pipe passes through the fixing plate and is fixedly connected to the fixing plate, the second pipe passes through the tank and is fixedly connected to the tank, the bottom of the water tank is fixedly connected to the base plate, and the bottom of the second water pump is fixedly connected to the base plate.

[0012] This invention provides a continuous steam explosion pretreatment device for lignin raw materials. It has the following beneficial effects:

[0013] 1. The continuous steam explosion pretreatment device for lignin raw materials is equipped with a crushing device. The crushing device is designed to crush the raw materials and screen out particles that meet the requirements through a filter screen. At the same time, the hot air generated by the hot air box is used to dry the raw materials to ensure the dryness of the raw materials and provide good conditions for subsequent steam explosion treatment.

[0014] 2. This continuous steam explosion pretreatment device for lignin raw materials is equipped with a steam explosion tank. The tank's structural design, with the inlet connected to the distribution pipe, allows the material to enter the tank evenly and smoothly. The outlet connected to the discharge pipe ensures that the treated material can be easily discharged. A motor drives the rotating shaft to rotate, which in turn causes the stirring roller to stir the material inside the tank, helping the material and the reagent to fully mix and react, thus improving the steam explosion treatment effect. A cleaning device at the bottom of the fixed plate can clean the inside of the tank after use, reducing material residue and ensuring hygiene and quality for the next use. The reagent tank delivers the reagent to the tank through a first water pump, allowing for precise addition of appropriate amounts of reagent according to the treatment requirements of different materials, thereby enhancing the effectiveness of the steam explosion treatment.

[0015] 3. The continuous steam explosion pretreatment device for lignin raw materials is equipped with a cleaning device. The cleaning device is designed to use a second water pump to extract the cleaning liquid from the water tank through the first pipe, and then transport it to the distribution pipe through the second pipe. The distribution pipe distributes the cleaning liquid to each delivery pipe, and finally sprays it evenly from the nozzle to achieve comprehensive cleaning of the inside of the tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the continuous steam explosion pretreatment device for lignin raw materials according to this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the continuous steam explosion pretreatment device for lignin raw materials according to this utility model.

[0018] Figure 3 This is a schematic diagram of the crushing device of this utility model;

[0019] Figure 4 This is a schematic diagram of the crushing device of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the gas explosion tank of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the gas explosion tank of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the gas explosion tank of this utility model;

[0023] Figure 8 This is a schematic diagram of the cleaning device of this utility model;

[0024] Figure 9 This is an enlarged structural diagram of part A of this utility model.

[0025] In the diagram: 1. Base plate; 2. Crushing device; 21. Outer shell; 22. Crushing table; 23. Crusher; 24. Hot air box; 25. Drying pipe; 26. Drying port; 27. Filter screen; 28. Assembly slot; 3. Electric conveyor belt; 4. Material distributor; 5. Material distribution pipe; 6. Gas explosion tank; 61. Tank body; 62. Inlet; 63. Outlet; 64. Motor; 65. Rotating shaft; 66. Cleaning device; 661. Water tank 662. First pipe; 663. Second water pump; 664. Second pipe; 665. Separating pipe; 666. Infusion pipe; 667. Nozzle; 67. Chemical tank; 68. First water pump; 69. Third pipe; 610. Fourth pipe; 611. Fixing plate; 612. Stirring roller; 7. Discharge pipe; 8. Collection tank; 9. Steam generator; 10. Steam pipe; 11. Solid phase outlet; 12. Gas phase outlet. Detailed Implementation

[0026] 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.

[0027] For the first embodiment, please refer to... Figures 1-4This utility model provides a technical solution: a continuous steam explosion pretreatment device for lignin raw materials, comprising a base plate 1, a crushing device 2 fixedly connected to the top of the base plate 1, an electric conveyor belt 3 fixedly connected to one side of the crushing device 2, a feed end of a distributor 4 fixedly connected to the side of the electric conveyor belt 3 away from the crushing device 2, a distribution pipe 5 connected to the discharge end of the distributor 4, a feed end of the distribution pipe 5 away from the distributor 4 connected to the feed end of a steam explosion tank 6, and a top side of the steam explosion tank 6 connected to... There is a steam pipe 10, and the end of the steam pipe 10 away from the steam explosion tank 6 is connected to a steam generator 9. The bottom of the steam generator 9 is fixedly connected to the base plate 1. The discharge end of the steam explosion tank 6 is connected to a discharge pipe 7. The end of the discharge pipe 7 away from the steam explosion tank 6 is connected to a collection tank 8. The top of one side of the collection tank 8 is connected to a gas phase outlet 12. The bottom of one side of the collection tank 8 located at the gas phase outlet 12 is connected to a solid phase outlet 11. The bottoms of the distributor 4, the steam explosion tank 6 and the collection tank 8 are all fixedly connected to the base plate 1.

[0028] The pulverizing device 2 includes a housing 21. A pulverizing table 22 is fixedly connected to one side of the inner wall of the housing 21. A filter screen 27 is fixedly connected to the top of the pulverizing table 22. One side of the filter screen 27 is fixedly connected to the inner wall of the housing 21. A pulverizer 23 is fixedly connected to the portion of the inner wall of the housing 21 above the pulverizing table 22. A drying port 26 is opened on the portion of the inner wall of the housing 21 on the side of the filter screen 27. A drying pipe 25 is connected to one side of the drying port 26. The end of the drying pipe 25 away from the drying port 26 is connected to the air outlet of a hot air box 24. The bottom of the hot air box 24 is fixedly connected to the housing 21. An assembly groove 28 is opened on one side of the housing 21. The bottom of the housing 21 is fixedly connected to the base plate 1. One side of the inner wall of the housing 21 is rotatably connected to an electric conveyor belt 3.

[0029] In operation, the lignin raw material is fed into the pulverizing device 2. The raw material first falls onto the pulverizing table 22, at which point the pulverizer 23 starts working to pulverize the raw material. After pulverization, the raw material is screened through the filter screen 27. Raw material that meets the particle size requirements passes through the filter screen, while raw material that does not meet the requirements continues to be pulverized on the pulverizing table 22 until the particle size is qualified. The hot air box 24 delivers hot air into the pulverizing device 2 through the drying pipe 25 and the drying port 26 to dry the raw material during the pulverization process, removing excess moisture and ensuring that the dryness of the raw material meets the requirements of subsequent steam explosion. Qualified raw material is transported by the electric conveyor belt 3. The raw material is fed to the feed end of the distributor 4, which distributes it evenly into the distribution pipe 5. The raw material is then fed into the feed end of the explosion tank 6 through the distribution pipe 5. The steam generator 9 delivers high-temperature and high-pressure steam into the explosion tank 6 through the steam pipe 10. The raw material is subjected to the action of steam in the explosion tank 6, resulting in an explosion reaction, thus achieving the pretreatment of lignin raw material. After the explosion reaction is completed, the treated material enters the collection tank 8 through the discharge pipe 7. In the collection tank 8, the gas phase and solid phase materials are separated. The gas phase material is discharged through the gas phase outlet 12, while the solid phase material is discharged through the solid phase outlet 11 for subsequent collection and utilization.

[0030] Second embodiment, please refer to Figures 1-7 Based on the first embodiment, this utility model provides a technical solution: the gas explosion tank 6 includes a tank body 61, an inlet 62 is provided on one side of the tank body 61, and an outlet 63 is provided at the bottom of the side of the tank body 61 away from the inlet 62. A motor 64 is fixedly connected to the top of the tank body 61, and the drive shaft of the motor 64 passes through the tank body 61 and is fixedly connected to a rotating shaft 65. A stirring roller 612 is fixedly connected to one side of the rotating shaft 65. A fixing plate 611 is fixedly connected to the inner wall of the tank body 61 above the inlet 62, and a cleaning device 66 is fixedly connected to the bottom of the fixing plate 611. A medicine tank 67 is fixedly connected to one side of the tank body 61. A third pipe 69 is connected to one side of the medicine tank 67. The end of the third pipe 69 away from the medicine tank 67 is connected to the inlet of a first water pump 68. The outlet of the first water pump 68 is connected to a fourth pipe 610. The fourth pipe 610 passes through the tank body 61 and is fixedly connected to the tank body 61. One side of the first water pump 68 is fixedly connected to the tank body 61. The top of one side of the tank body 61 is connected to a steam pipe 10. The bottom of the tank body 61 is fixedly connected to a bottom plate 1. One side of the feed inlet 62 is connected to a distribution pipe 5. One side of the discharge outlet 63 is connected to a discharge pipe 7.

[0031] In use, the material to be processed is conveyed to the inlet 62 through the distribution pipe 5, and the material enters the tank 61. The motor 64 is started, and the motor 64 drives the rotating shaft 65 to rotate, thereby making the stirring roller 612 fully stir the material in the tank 61 to ensure that the material steam enters evenly. The reagent in the reagent tank 67 is drawn by the first water pump 68 through the third pipe 69 and conveyed to the tank 61 through the fourth pipe 610 to mix and react with the material. During the reaction, the steam pipe 10 can introduce steam into the tank 61 to provide the necessary temperature and pressure conditions for the reaction. The processed material is discharged from the tank 61 through the discharge port and the discharge pipe 7.

[0032] Third embodiment, please refer to Figures 1-9 Based on the second embodiment, this utility model provides a technical solution: the cleaning device 66 includes a water tank 661, a first pipe 662 connected to one side of the water tank 661, an inlet of a second water pump 663 connected to the end of the first pipe 662 away from the water tank 661, a second pipe 664 connected to the outlet of the second water pump 663, a liquid distribution pipe 665 connected to the end of the second pipe 664 away from the second water pump 663, and an infusion pipe connected to one side of the liquid distribution pipe 665. 666, the end of the infusion tube 666 away from the dispensing tube 665 is connected to a nozzle 667, the top of the nozzle 667 is fixedly connected to the fixing plate 611, the bottom of the dispensing tube 665 is fixedly connected to the fixing plate 611, the infusion tube 666 passes through the fixing plate 611 and is fixedly connected to the fixing plate 611, the second pipe 664 passes through the tank body 61 and is fixedly connected to the tank body 61, the bottom of the water tank 661 is fixedly connected to the bottom plate 1, and the bottom of the second water pump 663 is fixedly connected to the bottom plate 1.

[0033] In use, the second water pump 663 is started. The second water pump 663 draws cleaning fluid from the water tank 661 through the first pipe 662. After being pressurized by the second water pump 663, the cleaning fluid is delivered to the distribution pipe 665 through the second pipe 664. The distribution pipe 665 evenly distributes the cleaning fluid to each delivery pipe 666, which then delivers the cleaning fluid to the nozzle 667. The nozzle sprays the cleaning fluid in a mist form to thoroughly clean the inside of the tank 61. During the cleaning process, the fixing plate 611 provides stable support for the nozzle 667 and the distribution pipe 665, ensuring the normal operation of the cleaning device. After cleaning is completed, the second water pump 663 is turned off to stop the delivery of the cleaning fluid.

[0034] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A continuous steam explosion pretreatment device for lignin raw materials, characterized in that: Includes a base plate (1), on the top of which a crushing device (2) is fixedly connected. An electric conveyor belt (3) is fixedly connected to one side of the crushing device (2). The feed end of a feeder (4) is fixedly connected to the side of the electric conveyor belt (3) away from the crushing device (2). The discharge end of the feeder (4) is connected to a feed pipe (5). The end of the feed pipe (5) away from the feeder (4) is connected to the feed end of a steam explosion tank (6). A steam pipe (10) is connected to the top of one side of the steam explosion tank (6). The steam pipe (10) is located away from the steam explosion tank. (6) One end is connected to a steam generator (9), the bottom of the steam generator (9) is fixedly connected to the bottom plate (1), the discharge end of the steam explosion tank (6) is connected to a discharge pipe (7), the end of the discharge pipe (7) away from the steam explosion tank (6) is connected to a collection tank (8), the top of one side of the collection tank (8) is connected to a gas phase outlet (12), the bottom of one side of the collection tank (8) located at the gas phase outlet (12) is connected to a solid phase outlet (11), the bottom of the distributor (4), the steam explosion tank (6) and the collection tank (8) are all fixedly connected to the bottom plate (1); The pulverizing device (2) includes a shell (21), a pulverizing table (22) is fixedly connected to one side of the inner wall of the shell (21), a filter screen (27) is fixedly connected to the top of the pulverizing table (22), one side of the filter screen (27) is fixedly connected to the inner wall of the shell (21), a pulverizer (23) is fixedly connected to the part of the inner wall of the shell (21) above the pulverizing table (22), a drying port (26) is opened on the part of the inner wall of the shell (21) on the side of the filter screen (27), a drying pipe (25) is connected to one side of the drying port (26), the end of the drying pipe (25) away from the drying port (26) is connected to the air outlet of the hot air box (24), the bottom of the hot air box (24) is fixedly connected to the shell (21), and an assembly groove (28) is opened on one side of the shell (21).

2. The continuous steam explosion pretreatment device for lignin raw materials according to claim 1, characterized in that: The bottom of the outer shell (21) is fixedly connected to the base plate (1), and one side of the inner wall of the outer shell (21) is rotatably connected to the electric conveyor belt (3).

3. The continuous steam explosion pretreatment device for lignin raw materials according to claim 2, characterized in that: The gas explosion tank (6) includes a tank body (61), with a feed inlet (62) on one side of the tank body (61) and a discharge outlet (63) at the bottom of the side of the tank body (61) away from the feed inlet (62). A motor (64) is fixedly connected to the top of the tank body (61), and a rotating shaft (65) is fixedly connected to the drive shaft of the motor (64) through the tank body (61). A stirring roller (612) is fixedly connected to one side of the rotating shaft (65), and a fixing plate (611) is fixedly connected to the inner wall of the tank body (61) above the feed inlet (62). A cleaning device (66) is fixedly connected to the bottom of the fixed plate (611). A medicine box (67) is fixedly connected to one side of the tank (61). A third pipe (69) is connected to one side of the medicine box (67). The end of the third pipe (69) away from the medicine box (67) is connected to the inlet of the first water pump (68). The outlet of the first water pump (68) is connected to the fourth pipe (610). The fourth pipe (610) passes through the tank (61) and is fixedly connected to the tank (61). One side of the first water pump (68) is fixedly connected to the tank (61).

4. A continuous steam explosion pretreatment device for lignin raw materials according to claim 3, characterized in that: The top of one side of the tank (61) is connected to the steam pipe (10), and the bottom of the tank (61) is fixedly connected to the bottom plate (1).

5. A continuous steam explosion pretreatment device for lignin raw materials according to claim 4, characterized in that: The feed inlet (62) is connected to the material distribution pipe (5) on one side, and the discharge outlet (63) is connected to the discharge pipe (7) on one side.

6. A continuous steam explosion pretreatment device for lignin raw materials according to claim 5, characterized in that: The cleaning device (66) includes a water tank (661), a first pipe (662) connected to one side of the water tank (661), an inlet of a second water pump (663) connected to the end of the first pipe (662) away from the water tank (661), an outlet of the second water pump (663) connected to a second pipe (664), a distributor pipe (665) connected to the end of the second pipe (664) away from the second water pump (663), an infusion pipe (666) connected to one side of the distributor pipe (665), and a nozzle (667) connected to the end of the infusion pipe (666) away from the distributor pipe (665).

7. A continuous steam explosion pretreatment device for lignin raw materials according to claim 6, characterized in that: The top of the nozzle (667) is fixedly connected to the fixing plate (611), the bottom of the liquid distribution pipe (665) is fixedly connected to the fixing plate (611), the infusion pipe (666) passes through the fixing plate (611) and is fixedly connected to the fixing plate (611), the second pipe (664) passes through the tank (61) and is fixedly connected to the tank (61), the bottom of the water tank (661) is fixedly connected to the bottom plate (1), and the bottom of the second water pump (663) is fixedly connected to the bottom plate (1).

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