Fiber material pretreatment system

Abstract

The utility model relates to the technical field of fermentation pretreatment, and provides a pretreatment system for fiber materials, which comprises a hydrolysis tank and a machine room, the hydrolysis tank is provided with a feed port, a water inlet, a dosing port and a discharge port, a first stirring device and a heating device are arranged in the hydrolysis tank, the first stirring device stirs the materials in the hydrolysis tank, and the heating device heats the materials in the hydrolysis tank. The heating device is used for heating materials in the hydrolysis tank; a first discharging pipe and a first power pump are arranged in the machine room, the first discharging pipe is connected with the discharging port, the first power pump is arranged on the first discharging pipe, and the first power pump conveys materials in the hydrolysis pool to the fermentation system. According to the arrangement, when the fiber material is fed through the feeding port and the fiber material is pretreated, a biological agent is fed into the hydrolysis tank through the dosing port, and hydrolysis of the fiber material is accelerated by utilizing an enzyme which is secreted by microorganisms and can degrade lignocellulose, so that the structure of the fiber material is destroyed or changed; accelerated pretreatment of fiber materials is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fermentation pretreatment technical field especially relates to a kind of pretreatment system of fiber material. BACKGROUND

[0002] Fermentation technology of fiber material is a process using microorganism to convert complex carbohydrates such as cellulose, hemicellulose in plants into simpler and more valuable products. Before carrying out fermentation of fiber material, in order to fully tap the fermentation potential of fiber material, pretreatment is a very key step. The main purpose of pretreatment is to destroy or change the complex structure in fiber material, especially the close connection between cellulose, hemicellulose and lignocellulose, so as to improve the action efficiency of microorganism or enzyme in subsequent fermentation process. The selection of pretreatment technology directly affects the cost-benefit ratio of the whole process and the quality of the final product.

[0003] Therefore, meeting the pretreatment needs of fiber material is an important topic to be solved in the industry at present. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of pretreatment system of fiber material, to carry out pretreatment to fiber material before fermentation of fiber material, to fully tap the fermentation potential of fiber material.

[0005] The utility model provides a kind of pretreatment system of fiber material, comprising:

[0006] Hydrolysis pool has accommodating space inside, the hydrolysis pool has the feeding port for putting fiber material to the inside of the hydrolysis pool, the water inlet for injecting water to the inside of the hydrolysis pool, the dosing port for adding biological inoculant to the inside of the hydrolysis pool and the discharge port for discharging the material in the hydrolysis pool, first stirring device and heating device are arranged in the hydrolysis pool, the first stirring device is suitable for stirring the material in the hydrolysis pool, and the heating device is suitable for heating the material in the hydrolysis pool;

[0007] Machine room is internally provided with first discharge pipe and first power pump, the first discharge pipe is connected with the discharge port, and the first power pump is arranged in the first discharge pipe, and the first power pump is suitable for conveying the material in the hydrolysis pool to fermentation system.

[0008] According to the pretreatment system of fiber material provided by the utility model, the hydrolysis pool further has fermentation liquid inlet for adding fermentation liquid to the inside of the hydrolysis pool, and the machine room is further provided with fermentation liquid supply pipe inside, one end of the fermentation liquid supply pipe is connected with the fermentation liquid inlet, and the other end of the fermentation liquid supply pipe is connected with the fermentation liquid discharge pipe of the fermentation system.

[0009] The utility model provides a kind of pretreatment system of fiber material, the hydrolysis pool includes:

[0010] Hydrolysis pool body, for accommodating material, the upper end of the hydrolysis pool body is open, the water inlet and the discharge port are both arranged in the hydrolysis pool body;

[0011] Main cover plate, arranged at the open end of the hydrolysis pool body, the main cover plate is suitable for covering the opening of the hydrolysis pool body, the main cover plate and the hydrolysis pool body are connected to form an integrated structure, the feeding port and the dosing port are both arranged on the main cover plate.

[0012] According to the utility model provides a kind of pretreatment system of fiber material, still include:

[0013] First cover plate, detachably arranged in the feeding port, the first cover plate and the main cover plate are sealingly connected, and the main cover plate and the hydrolysis pool body are sealingly connected;

[0014] Second cover plate, detachably arranged in the dosing port, the second cover plate and the main cover plate are sealingly connected.

[0015] According to the utility model provides a kind of pretreatment system of fiber material, the heating device includes:

[0016] Heating coil, arranged in the inside of the hydrolysis pool, and the heating coil and the inner wall of the hydrolysis pool are in contact, the water inlet end and the backwater end of the heating coil extend to the outside of the hydrolysis pool;

[0017] Heating water inlet pipe, connected with the water inlet end of the heating coil;

[0018] Heating backwater pipe, connected with the backwater end of the heating coil.

[0019] According to the utility model provides a kind of pretreatment system of fiber material, second stirring device is also arranged in the hydrolysis pool, the second stirring device is arranged at the feeding port, and the second stirring device is suitable for the rapid mixing and stirring of fiber material and material in the hydrolysis pool added at the feeding port.

[0020] According to the utility model provides a kind of pretreatment system of fiber material, the first stirring device includes:

[0021] At least one pair of stirring mechanisms, the stirring shafts of two in each pair of the stirring mechanisms are parallel to each other and have a spacing, the cross section of the hydrolysis pool is circular, and the two in each pair of the stirring mechanisms are symmetric about the diameter of the circle.

[0022] The utility model provides a kind of pretreatment system of fiber material, second discharge pipe is also provided in the machine room, the first discharge pipe is connected the first end of the second discharge pipe with the feed pipe of the fermentation system, the second end of the second discharge pipe is connected the fermentation liquor discharge pipe.

[0023] The utility model provides a kind of pretreatment system of fiber material, the first discharge pipe includes:

[0024] First main pipeline, the first end of the first main pipeline is connected the discharge port;

[0025] First branch pipeline and second branch pipeline, the first end of the first branch pipeline and the first end of the second branch pipeline are connected in the second end of the first main pipeline, stone collector is provided on the first branch pipeline;

[0026] Second main pipeline, the second end of the first branch pipeline and the second end of the second branch pipeline are connected in the first end of the second main pipeline, the second end of the second main pipeline is connected the feed pipe of the fermentation system with the second discharge pipe, the first power pump is arranged in the second main pipeline.

[0027] The utility model provides a kind of pretreatment system of fiber material, second power pump is provided on the fermentation liquor discharge pipe, the second end of the second discharge pipe is located in the downstream position of the second power pump;

[0028] The machine room is also provided with communication pipeline, the first end of the communication pipeline is connected the first discharge pipe, the first end of the communication pipeline is located in the upstream position of the first power pump, the second end of the communication pipeline is connected the fermentation liquor discharge pipe, the second end of the communication pipeline is located in the upstream position of the second power pump.

[0029] This utility model provides a pretreatment system for fiber materials, including a hydrolysis tank and a machine room. The hydrolysis tank has an internal storage space and includes a feeding port, a water inlet, a chemical dosing port, and a discharge port. The feeding port is used to feed the fiber materials into the hydrolysis tank, and the chemical dosing port is used to add biological agents. A water supply pipe can be connected to the water inlet to inject water into the hydrolysis tank to dilute the fiber materials and reduce the dry matter concentration. Inside the machine room, a first discharge pipe and a first power pump are installed. The first discharge pipe is connected to the discharge port for discharging the materials from the hydrolysis tank. The first power pump is located on the first discharge pipe and is used to transport the materials from the hydrolysis tank to the fermentation system. The hydrolysis tank is equipped with a first stirring device and a heating device. The first stirring device is used to stir the materials in the hydrolysis tank to ensure uniform mixing of the fiber materials, biological agents, and water. The heating device is used to heat the materials in the hydrolysis tank to maintain a suitable temperature for the pretreatment process of the fiber materials. This setup allows for the feeding of fibrous materials into the hydrolysis tank via the feed inlet for pretreatment. During pretreatment, biological agents can be added to the hydrolysis tank through the chemical dosing inlet. The enzymes secreted by these microorganisms, capable of degrading lignocellulose, accelerate the hydrolysis of the fibrous materials, thereby disrupting or altering their structure and achieving accelerated pretreatment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a top view of the pretreatment system for fiber materials provided by this utility model (the top of the hydrolysis tank is transparent to facilitate the display of the internal structure of the hydrolysis tank).

[0032] Figure 2 yes Figure 1 A cross-sectional view at position AA.

[0033] Figure 3 yes Figure 1 A cross-sectional view at position BB in the middle.

[0034] Figure 4 This is a schematic diagram of the fiber material pretreatment system provided by this utility model when the material is discharged from the hydrolysis tank to the fermentation system and the fermentation liquid of the fermentation system is discharged to the hydrolysis tank.

[0035] Figure 5The utility model provides a preprocessing system of fibre material's schematic diagram in hydrolysis pool discharging to fermentation system and fermentation system's fermentation liquor discharging to solid -liquid separation system.

[0036] Figure 6 The utility model provides a preprocessing system of fibre material's schematic diagram in hydrolysis pool discharging to solid -liquid separation system.

[0037] Figure 7 The utility model provides a preprocessing system of fibre material's schematic diagram in hydrolysis pool through second power pump discharging to fermentation system.

[0038] Figure 8 The utility model provides a fermentation system's fermentation liquor through first power pump discharging to hydrolysis pool and solid -liquid separation system's schematic diagram.

[0039] Reference signs:

[0040] 1, hydrolysis pool, 2, feeding port, 3, water inlet, 4, dosing port, 5, discharge port, 6, machine room, 7, water supply pipe, 8, stone collector, 9, first power pump, 10, fermentation liquor inlet, 11, fermentation liquor supply pipe, 12, heating coil, 13, heating water inlet pipe, 14, heating return pipe, 15, second stirring device, 16, stirring mechanism, 17, sewage collection tank, 18, sewage collection channel, 19, insulation layer, 20, manhole, 21, second discharge pipe, 22, feeding pipe, 23, fermentation liquor discharge pipe, 24, first main pipe, 25, first branch pipe, 26, second branch pipe, 27, second main pipe, 28, second power pump, 29, communication pipe, 30, solid -liquid separation system. DETAILED DESCRIPTION

[0041] To make the purpose, technical scheme and advantage of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in conjunction with the drawings in the utility model, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor belong to the range of protection of the utility model.

[0042] The preprocessing system of fibre material of the utility model will be described below in conjunction with Figures 1 to 8 The preprocessing system of fibre material of the utility model.

[0043] As Figures 1 to 8 Shown, the preprocessing system of fibre material provided by the utility model embodiment, including hydrolysis pool 1 and machine room 6.

[0044] Specifically, the inside of the hydrolysis tank 1 has a containing space, and the hydrolysis tank 1 has a feeding port 2, a water inlet 3, a dosing port 4, and a discharge port 5. The feeding port 2 is used for feeding the fiber material into the inside of the hydrolysis tank 1, and the dosing port 4 is used for adding the biological agent into the inside of the hydrolysis tank 1. The water inlet 3 can be connected to a water supply pipe 7 for injecting water into the inside of the hydrolysis tank 1 to dilute the fiber material and reduce the dry matter concentration in the hydrolysis tank 1.

[0045] A first discharge pipe connected to the discharge port 5 is arranged in the inside of the machine room 6 and is used for discharging the material in the hydrolysis tank 1. A first power pump 9 is arranged in the first discharge pipe and is used for conveying the material in the hydrolysis tank 1 to a fermentation system so that the pretreated material is fermented in the fermentation system. The first power pump 9 can be but is not limited to a screw pump.

[0046] A first stirring device and a heating device are arranged in the hydrolysis tank 1. The first stirring device is used for stirring the material in the hydrolysis tank 1 to uniformly mix the fiber material, the biological agent, and the water and effectively promote the growth of microorganisms. The heating device is used for heating the material in the hydrolysis tank 1 to make the temperature in the inside of the hydrolysis tank 1 appropriate and provide an appropriate temperature for the pretreatment process of the fiber material.

[0047] In this way, the fiber material can be fed into the hydrolysis tank 1 through the feeding port 2 to be pretreated. When the fiber material is pretreated, the biological agent can be added into the hydrolysis tank 1 through the dosing port 4, and the enzymes secreted by the microorganisms that can degrade lignocellulose are used to accelerate the hydrolysis of the fiber material, thereby destroying or changing the structure of the fiber material and achieving the pretreatment of the fiber material.

[0048] It should be noted that the stirring speed of the first stirring device is low, the energy consumption is low, and the equipment wear can be reduced. The pretreatment system for the fiber material provided in this embodiment can effectively hydrolyze the lignocellulose of the fiber material, reduce the hydrophobicity of the fiber material, and reduce the scum in the hydrolysis tank 1. It is proved by tests that the pretreatment system for the fiber material provided in this embodiment can make the hydrophilicity of the straw increase from 60% to more than 95% after about two days of high-concentration pretreatment when the fiber material with a crushing particle size of 3-5 cm is in a dry matter concentration range of 15%-17%, thereby improving the hydrophilicity of the fiber material and being beneficial to the sufficient fermentation of the fiber material in the subsequent process, improving the fermentation concentration, and reducing the equipment cost of the fermentation system.

[0049] The fiber material can be corn straw, rice straw, or rape straw.

[0050] The machine room 6 is partly below the ground and partly above the ground. The part of the machine room 6 below the ground is of reinforced concrete structure, and the part of the machine room 6 above the ground is of brick and concrete structure. A slant ladder is arranged in the machine room 6 to facilitate entering and exiting the machine room 6.

[0051] In the embodiment of the utility model, the hydrolysis tank 1 also has a fermentation liquid inlet 10 for adding fermentation liquid into the hydrolysis tank 1. The fermentation liquid added into the hydrolysis tank 1 can dilute the fiber material and reduce the dry matter concentration in the hydrolysis tank 1. The fermentation liquid is the product of the fermentation system. The use of the fermentation liquid realizes the recycling of waste liquid in the biomass treatment system, which is conducive to reducing the water consumption and reducing the cost.

[0052] Specifically, the machine room 6 also has a fermentation liquid supply pipe 11. One end of the fermentation liquid supply pipe 11 is connected to the fermentation liquid inlet 10, and the other end of the fermentation liquid supply pipe 11 is connected to the fermentation liquid discharge pipe 23 of the fermentation system.

[0053] The biomass treatment system has a fiber material pretreatment system, a fermentation system and a solid-liquid separation system 30. After the fiber material is pretreated by the fiber material pretreatment system, it enters the fermentation system for fermentation. The fermentation product of the fermentation system is fermentation liquid. Figure 4 and Figure 5 As shown, the fermentation liquid can be directly discharged to the solid-liquid separation system 30 for solid-liquid separation, or can be discharged to the fiber material pretreatment system for diluting the fiber material. Valves can be arranged on the fermentation liquid discharge pipe 23 and the fermentation liquid supply pipe 11. By controlling the opening and closing state of the valves, the flow direction of the fermentation liquid discharged from the fermentation system can be controlled.

[0054] When the fermentation system discharges fermentation liquid, if the fiber material pretreatment system needs to dilute the fiber material in the hydrolysis tank 1, the fermentation liquid discharged from the fermentation system can be transported into the hydrolysis tank 1 of the fiber material pretreatment system, as shown in Figure 4 When the fermentation system discharges fermentation liquid, if the fiber material pretreatment system does not have the dilution requirement for the fiber material in the hydrolysis tank 1, the fermentation liquid in the fermentation system can be discharged to the solid-liquid separation system 30, as shown in Figure 5 . Figure 5 The pipeline with the dotted line arrow in the above-mentioned figure is referred to as the fermentation liquid discharge pipe 23 as a whole.

[0055] In a further embodiment, a second discharge pipe 21 is also arranged in the machine room 6. One end of the first discharge pipe away from the discharge port 5 is connected to the first end of the second discharge pipe 21 and the feed pipe 22 of the fermentation system. The second end of the second discharge pipe 21 is connected to the fermentation liquid discharge pipe 23.

[0056] The material in the first discharge pipe can be discharged into the feed pipe 22 of the fermentation system, so that the fibrous material is pre-processed and then enters the fermentation system for fermentation; the material in the first discharge pipe can also be discharged into the fermentation liquid discharge pipe 23 through the second discharge pipe 21, so that the material in the first discharge pipe directly enters the solid-liquid separation system 30. Valves can be arranged on the feed pipe 22 of the fermentation system, the first discharge pipe and the second discharge pipe 21, and by controlling the opening and closing states of the valves, the flow direction of the material in the first discharge pipe can be controlled.

[0057] When the fermentation system is in normal operation, the material in the first discharge pipe can flow to the feed pipe 22 of the fermentation system, as shown in FIG. 2. Figure 4 and Figure 5 When the fermentation system is in normal operation, the material in the first discharge pipe can flow to the feed pipe 22 of the fermentation system, as shown in FIG. 2. Figure 6 .

[0058] In this embodiment, the first discharge pipe includes a first main pipe 24, a first branch pipe 25, a second branch pipe 26 and a second main pipe 27.

[0059] The first end of the first main pipe 24 is connected to the discharge port 5, the first ends of the first branch pipe 25 and the second branch pipe 26 are both connected to the second end of the first main pipe 24, and a stone collector 8 is arranged on the first branch pipe 25. The second ends of the first branch pipe 25 and the second branch pipe 26 are both connected to the first end of the second main pipe 27, the second end of the second main pipe 27 is connected to the feed pipe 22 and the second discharge pipe 21 of the fermentation system, and the first power pump 9 is arranged on the second main pipe 27.

[0060] The material in the first main pipe 24 can enter the second main pipe 27 through the first branch pipe 25 or the second branch pipe 26. When the material passes through the first branch pipe 25, the stone collector 8 can filter out the block-shaped hard impurities such as stones in the material. Valves can be arranged on the first main pipe 24, the first branch pipe 25, the second branch pipe 26 and the second main pipe 27, and by controlling the opening and closing states of the valves, the flow direction of the material in the first main pipe 24 can be controlled.

[0061] When the stone collector 8 is in normal operation, the material in the first main pipe 24 can flow to the second main pipe 27 through the first branch pipe 25, and the material is filtered by the stone collector 8, as shown in FIG. 2. Figure 4 When the stone collector 8 is in normal operation, the material in the first main pipe 24 can flow to the second main pipe 27 through the first branch pipe 25, and the material is filtered by the stone collector 8, as shown in FIG. 2.

[0062] In this embodiment of the invention, a second power pump 28 is provided on the fermentation broth outlet pipe 23. The second power pump 28 is used to provide power for the flow of materials within the fermentation broth outlet pipe 23. The second end of the second outlet pipe 21 is located downstream of the second power pump 28. The second power pump 28 may be, but is not limited to, a screw pump.

[0063] The machine room 6 is also equipped with a connecting pipe 29. The first end of the connecting pipe 29 is connected to the first discharge pipe, and the first end of the connecting pipe 29 is located upstream of the first power pump 9. The second end of the connecting pipe 29 is connected to the fermentation broth discharge pipe 23, and the second end of the connecting pipe 29 is located upstream of the second power pump 28.

[0064] When the first power pump 9 stops running and the second power pump 28 starts running, such as Figure 7 As shown, the material in the first discharge pipe can flow through the connecting pipe 29, the fermentation broth discharge pipe 23, and the second discharge pipe 21 to the feed pipe 22 of the fermentation system. When the first power pump 9 is running and the second power pump 28 is stopped, as... Figure 8 As shown, the fermentation broth in the fermentation broth discharge pipe 23 can pass through the connecting pipe 29, the first discharge pipe, and the second discharge pipe 21 into the fermentation broth discharge pipe 23, and then into the fermentation broth supply pipe 11 or the solid-liquid separation system 30. Valves can be installed on the connecting pipe 29 and the second discharge pipe 21. By controlling the opening and closing of the valves, the flow direction of the material or fermentation broth can be controlled.

[0065] With this configuration, the first power pump 9 and the second power pump 28 can serve as backups for each other. When the first power pump 9 malfunctions and requires maintenance, the second power pump 28 can replace it to drive the flow of material in the first discharge pipe. Conversely, when the second power pump 28 malfunctions and requires maintenance, the first power pump 9 can replace it to drive the flow of fermentation broth in the fermentation broth discharge pipe 23.

[0066] In this embodiment, the hydrolysis tank 1 includes a hydrolysis tank body and a main cover plate.

[0067] The hydrolysis tank body is used to contain materials. The upper end of the hydrolysis tank body is open. The main cover plate is set at the open end of the hydrolysis tank body. The main cover plate is connected to the hydrolysis tank body to form an integrated structure. The main cover plate is used to cover the open end of the hydrolysis tank body.

[0068] Both the feeding port 2 and the chemical dosing port 4 are located on the main cover plate, facing upwards, to facilitate the addition of fiber materials and biological agents to the hydrolysis tank 1. In actual use, fiber materials can be transported using a forklift or other transport vehicles, and biological agents can be directly added to the hydrolysis tank 1, achieving high-throughput material addition and improving the feeding speed and pretreatment efficiency.

[0069] In the embodiment, the hydrolysis tank body and the main cover plate are made of reinforced concrete structure, and a part of the hydrolysis tank body is below the ground and another part is above the ground. The main cover plate is made of reinforced concrete structure.

[0070] In the further embodiment, the pretreatment system of the fibrous material further comprises a first cover plate and a second cover plate. The first cover plate is detachably arranged at the feeding port 2 and used for covering the feeding port 2. The second cover plate is detachably arranged at the dosing port 4 and used for covering the dosing port 4.

[0071] The first cover plate is sealingly connected with the main cover plate, and the second cover plate is sealingly connected with the main cover plate, so as to realize the sealing of the hydrolysis tank 1. During the pretreatment, the high-efficiency special anaerobic hydrolysis and fermentation bacterial agent can be added, and the sealing of the hydrolysis tank 1 is beneficial to providing an anaerobic environment for the hydrolysis tank 1.

[0072] Moreover, during the pretreatment, the hydrolysis tank 1 is in a sealed state, and the carbon dioxide generated during the pretreatment process will not be volatilized into the atmosphere, but will be discharged to the fermentation system together with the pretreated material and participate in fermentation in the fermentation system to generate methane. The closed hydrolysis tank 1 in the embodiment reduces carbon loss, improves the gas production of the fermentation system, and can contribute 7% to 10% of the methane production of the fermentation system.

[0073] In the embodiment, the heating device comprises a heating coil 12, a heating water inlet pipe 13 and a heating water return pipe 14.

[0074] The heating coil 12 is arranged in the interior of the hydrolysis tank 1, and the heating coil 12 is in contact with the inner wall of the hydrolysis tank 1. Specifically, the heating coil 12 is a seamless steel pipe, which extends along the circumference of the hydrolysis tank 1. The water inlet end and the water return end of the heating coil 12 extend to the outside of the hydrolysis tank 1, the heating water inlet pipe 13 is connected with the water inlet end of the heating coil 12, and the heating water return pipe 14 is connected with the water return end of the heating coil 12.

[0075] By supplying hot water into the heating coil 12, the hot water circulates in the heating coil 12, and the hot water is used to provide heat for the hydrolysis tank 1, so as to heat the hydrolysis tank 1 and the material in the hydrolysis tank 1. The temperature of the hot water can be controlled at about 40 degrees Celsius (the symbol of Celsius is ℃).

[0076] The fibrous material added into the hydrolysis tank 1 through the feeding port 2 has high solid content and poor fluidity. In the embodiment, a second stirring device 15 is further arranged in the hydrolysis tank 1, and the second stirring device 15 is arranged at the feeding port 2. When the fibrous material is added into the hydrolysis tank 1, the second stirring device 15 can be used to stir the fibrous material added at the feeding port 2, so that the newly added fibrous material can quickly participate in mixing and avoid the accumulation of the material at the feeding port 2. The second stirring device 15 can also quickly mix and stir the material in the hydrolysis tank 1.

[0077] The second stirring device 15 can be, but is not limited to, a horizontal paddle stirrer.

[0078] In the embodiment, the first stirring device comprises at least one pair of stirring mechanisms 16, and the stirring shafts of the two stirring mechanisms in each pair of stirring mechanisms 16 are parallel to each other and have a spacing. The cross section of the hydrolysis tank 1 is circular, and the two stirring mechanisms in each pair of stirring mechanisms 16 are symmetrical about the diameter of the circle.

[0079] In this way, the disturbance of the first stirring device to the same cross section of the hydrolysis tank 1 can be maximized, and the stirring effect can be improved. When the first stirring device comprises a plurality of pairs of stirring mechanisms 16, the plurality of pairs of stirring mechanisms 16 can be distributed in a direction perpendicular to the cross section of the hydrolysis tank 1, so as to ensure the stirring effect of each position in the hydrolysis tank 1.

[0080] The cross section of the hydrolysis tank 1 is a cross section of the hydrolysis tank 1 in the horizontal direction. Specifically, the hydrolysis tank 1 can be provided in a cylindrical structure.

[0081] The stirring mechanism 16 can be, but is not limited to, a horizontal paddle stirrer. The power of the horizontal paddle stirrer of the first stirring device is greater than the power of the horizontal paddle stirrer of the second stirring device 15.

[0082] The stirring mechanism 16 has a stirring shaft and stirring paddles, and the stirring paddles are provided in a plurality of forms. The plurality of stirring paddles are distributed in the axial direction of the stirring shaft. The length of the stirring paddle is determined according to the distance between the position corresponding to the stirring paddle on the stirring shaft and the side wall of the hydrolysis tank 1 and the distance between the position corresponding to the stirring paddle on the stirring shaft and another stirring shaft, so as to maximize the disturbance range of the stirring paddle.

[0083] In the embodiment of the utility model, the inside of the machine room 6 is provided with a sewage collection tank 17 and a sewage collection channel 18, the sewage collection tank 17 and the sewage collection channel 18 are arranged below the ground of the machine room 6, the sewage collection channel 18 is used for collecting sewage, and the sewage collected by the sewage collection channel 18 can be discharged to the sewage collection tank 17.

[0084] When leakage occurs in the pipes, valves and the like in the machine room 6 or when the machine room 6 and the like are flushed, the liquid such as leakage liquid and flushing water can be collected in the sewage collection channel 18 and flow to the sewage collection tank 17.

[0085] In the embodiment of the utility model, the pretreatment system of the fiber material further comprises a heat preservation layer 19, the heat preservation layer 19 is wrapped on the outside of the hydrolysis tank 1 and the inner bottom of the hydrolysis tank 1, the heat preservation layer 19 is used for heat preservation of the hydrolysis tank 1, keeps the temperature in the hydrolysis tank 1 stable, reduces heat loss and reduces energy consumption.

[0086] It should be noted that the hydrolysis tank 1 is provided with an access hole 20 for facilitating maintenance and repair. To ensure the sealing of the hydrolysis tank 1, a sealing cover plate is arranged at the position of the access hole 20. A sloping ladder is further arranged outside the hydrolysis tank 1 for enabling an operator to climb to the top of the hydrolysis tank 1.

[0087] In summary, the pretreatment system for fiber material provided by the embodiments of the present application can effectively improve the pretreatment efficiency of the fiber material, can adapt to the hydrolysis of fiber material with large particle size, only needs to shred the fiber material, does not need to perform silk rubbing treatment on the fiber material, greatly reduces the cost of the pulverizer equipment and the operation cost. Moreover, the hydrophilicity of the fiber material after the pretreatment is increased in a short time, completely solves the shortcomings that the fiber material is not easy to hydrophilic and ferment, ensures the sufficient fermentation of the fiber material, solves the problem of liquid surface scum crust, ensures the stable operation of the pretreatment system. Moreover, not only the production target is achieved, but also the wet fermentation gas production is improved, and the project income is increased.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pretreatment system for fibrous material, characterized in that The application relates to a hydrolysis tank and a fermentation system. The hydrolysis tank (1) has a material feeding port (2) for feeding fiber materials into the hydrolysis tank (1), a water inlet (3) for injecting water into the hydrolysis tank (1), a medicine feeding port (4) for feeding biological bacteria into the hydrolysis tank (1), and a material discharging port (5) for discharging materials in the hydrolysis tank (1), and the hydrolysis tank (1) is internally provided with a first stirring device and a heating device, the first stirring device is suitable for stirring the materials in the hydrolysis tank (1), and the heating device is suitable for heating the materials in the hydrolysis tank (1). The machine room (6) is internally provided with a first discharging pipe connected with the material discharging port (5) and a first power pump (9) arranged in the first discharging pipe, and the first power pump (9) is suitable for conveying the materials in the hydrolysis tank (1) to a fermentation system.

2. The pre-treatment system of fibrous material according to claim 1, characterized in that, The hydrolysis tank (1) is further provided with a fermentation liquid inlet (10) for injecting fermentation liquid into the hydrolysis tank (1), and the machine room (6) is internally provided with a fermentation liquid supply pipe (11) having one end connected with the fermentation liquid inlet (10) and the other end connected with a fermentation liquid discharging pipe (23) of the fermentation system.

3. The pre-treatment system of fibrous material according to claim 1, characterized in that, The hydrolysis tank (1) comprises: A hydrolysis tank body for containing materials, the upper end of the hydrolysis tank body is provided with an opening, and the water inlet (3) and the material discharging port (5) are arranged on the hydrolysis tank body. A main cover plate arranged at the opening end of the hydrolysis tank body, the main cover plate is suitable for covering the opening of the hydrolysis tank body, the main cover plate is connected with the hydrolysis tank body to form an integrated structure, and the material feeding port (2) and the medicine feeding port (4) are arranged on the main cover plate.

4. A pre-treatment system for fibrous material according to claim 3, characterized in that, Further comprising: A first cover plate detachably arranged on the material feeding port (2), the first cover plate is sealingly connected with the main cover plate, and the main cover plate is sealingly connected with the hydrolysis tank body. A second cover plate detachably arranged on the medicine feeding port (4), the second cover plate is sealingly connected with the main cover plate.

5. The pre-treatment system of fibrous material according to claim 1, characterized in that, The heating device comprises: A heating coil pipe (12) arranged in the interior of the hydrolysis tank (1), and the heating coil pipe (12) is in close contact with the inner wall of the hydrolysis tank (1), the water inlet end and the water return end of the heating coil pipe (12) extend to the outside of the hydrolysis tank (1); A heating water inlet pipe (13) connected with the water inlet end of the heating coil pipe (12); A heating water return pipe (14) connected with the water return end of the heating coil pipe (12).

6. The pre-treatment system of fibrous material according to claim 1, characterized in that, The hydrolysis tank (1) is further provided with a second stirring device (15), the second stirring device (15) is arranged at the material feeding port (2), and the second stirring device (15) is suitable for rapidly mixing and stirring the fiber materials fed at the material feeding port (2) and the materials in the hydrolysis tank (1).

7. The pre-treatment system of fibrous material according to claim 1, characterized in that, The first stirring device comprises: At least one pair of stirring mechanisms (16), the stirring shafts of two of each pair of the stirring mechanisms (16) are parallel to each other and have a spacing, the cross section of the hydrolysis tank (1) is circular, and the two of each pair of the stirring mechanisms (16) are symmetrical about the diameter of the circle.

8. The pre-treatment system of fibrous material according to claim 2, characterized in that, The machine room (6) is also provided with a second discharge pipe (21), and the first ends of the feed pipe (22) of the fermentation system and the second discharge pipe (21) are connected to one end of the first discharge pipe away from the discharge port (5), and the second end of the second discharge pipe (21) is connected to the fermentation liquid discharge pipe (23).

9. A pre-treatment system for fibrous material according to claim 8, characterized in that, The first discharge pipe comprises: A first main pipe (24), the first end of the first main pipe (24) is connected to the discharge port (5); A first branch pipe (25) and a second branch pipe (26), the first ends of the first branch pipe (25) and the second branch pipe (26) are connected to the second end of the first main pipe (24), and a stone collector (8) is arranged on the first branch pipe (25); A second main pipe (27), the second ends of the first branch pipe (25) and the second branch pipe (26) are connected to the first end of the second main pipe (27), the second end of the second main pipe (27) is connected to the feed pipe (22) and the second discharge pipe (21) of the fermentation system, and the first power pump (9) is arranged on the second main pipe (27).

10. The pre-treatment system of fibrous material according to claim 8, characterized in that, The fermentation liquid discharge pipe (23) is provided with a second power pump (28), and the second end of the second discharge pipe (21) is located downstream of the second power pump (28); The machine room (6) is also provided with a communication pipe (29), the first end of the communication pipe (29) is connected to the first discharge pipe, the first end of the communication pipe (29) is located upstream of the first power pump (9), and the second end of the communication pipe (29) is connected to the fermentation liquid discharge pipe (23), and the second end of the communication pipe (29) is located upstream of the second power pump (28).

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