Discharging device for fermentation pretreatment of fiber materials

Abstract

The utility model provides a discharging device for fermentation pretreatment of fiber materials, which belongs to the field of fermentation pretreatment and comprises a hydrolysis tank and a discharging pump set, one end of the discharging pump set is communicated into the hydrolysis tank, and the other end of the discharging pump set is communicated with a fermentation device; the discharging pump set comprises a first screw pump, a first pipe set and a second pipe set, a water inlet of the first screw pump is communicated with the hydrolysis tank through the first pipe set, and a water outlet of the first screw pump is communicated with the fermentation device through the second pipe set. The discharging device aims at solving the problems that in the prior art, a discharging device for fiber material fermentation pretreatment is poor in equipment operation stability and large in maintenance and operation difficulty. The technical effects that the structure is stable in operation, low in maintenance cost, small in operation difficulty and low in equipment noise are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fermentation pretreatment technology, and in particular to a discharge device for fermentation pretreatment of fibrous materials. Background Technology

[0002] In the early stages, the concentration of fibrous material fermentation pretreatment system was less than 11%. In order to improve the gas production rate per unit volume of fermentation device and reduce equipment investment, some fermentation devices have adopted a semi-dry process in recent years, increasing the material concentration in the tank from 8-10% to 13-15%. As a result, the material concentration in the pretreatment system has also increased, reaching as high as 18%.

[0003] Due to the high concentration in fermentation pretreatment systems, most existing technologies use vacuum pumps or plunger pumps for discharge. Vacuum pumps are prone to drawing in air, which can create safety hazards by bringing air into the anaerobic fermenter. Furthermore, their high failure rate is a fatal flaw. They also generate significant noise and consume large amounts of fuel, increasing operating costs. Plunger pumps, compared to other types, have higher purchase costs, are more complex to operate, require skilled and experienced operators, and are prone to wear due to material friction. This necessitates frequent replacement of plungers and seals, resulting in higher maintenance costs. They also generate considerable noise during operation.

[0004] In summary, existing discharge devices suffer from problems such as poor equipment stability and high maintenance and operation difficulty. Utility Model Content

[0005] This utility model provides a discharge device for the fermentation pretreatment of fiber materials, which solves the defects of the discharge device for the fermentation pretreatment of fiber materials in the prior art, such as poor equipment operation stability and high maintenance and operation difficulty, and achieves a structure with more stable operation, low maintenance cost, easy operation and low equipment noise.

[0006] This utility model provides a discharge device for the fermentation pretreatment of fibrous materials, including a hydrolysis tank and a discharge pump group. One end of the discharge pump group is connected to the hydrolysis tank, and the other end of the discharge pump group is connected to the fermentation device. The discharge pump group includes a first screw pump, a first pipe group and a second pipe group. The inlet of the first screw pump is connected to the hydrolysis tank through the first pipe group, and the outlet of the first screw pump is connected to the fermentation device through the second pipe group.

[0007] The discharge device for the pretreatment of fibrous materials fermentation according to this utility model achieves the following effects through the setting of the first screw pump: without changing the total concentration of raw materials in the hydrolysis tank, without increasing the volume of the hydrolysis tank, without reducing the gas production rate of the fermentation device, and without affecting the microbial system environment, it has relatively stable operation, low maintenance cost, easy operation, and low equipment noise.

[0008] In addition, the discharge device for the fermentation pretreatment of fibrous materials according to this utility model may also have the following additional technical features:

[0009] In some embodiments of this utility model, a second screw pump is also included, which is disposed between the first pipe group and the second pipe group and is connected in parallel with the first screw pump.

[0010] By adopting the above embodiments, the second screw pump can be configured in conjunction with the first screw pump to form a one-for-one standby configuration, ensuring the reliability of the device's operation.

[0011] In some embodiments of this utility model, the first pipe group includes a first main pipe and a first branch pipe, and the second pipe group includes a second main pipe and a transition pipe;

[0012] One end of the first main pipe is connected to the hydrolysis tank, the other end of the first main pipe is connected to the middle of the first branch pipe, one end of the first branch pipe is connected to the inlet of the first screw pump, and the other end of the first branch pipe is connected to the inlet of the second screw pump.

[0013] One end of the transition pipe is connected to the outlet of the first screw pump, and the other end of the transition pipe is connected to the outlet of the second screw pump. One end of the second main pipe is connected to the middle of the transition pipe, and the other end of the second main pipe is connected to the fermentation device.

[0014] In some embodiments of this utility model, the first pipe group further includes a second branch pipe, one end of which is connected to the hydrolysis tank and the other end of which is connected to the first main pipe.

[0015] By adopting the above embodiments, the second branch pipe can be set up in conjunction with the first main pipe to form a branch path. One path is set in the upper middle part to discharge the uniformly mixed material, and the other path is set at the bottom to discharge the bottom sediment sludge, thus ensuring the effective volume of the hydrolysis device.

[0016] In some embodiments of this utility model, multiple valves are also provided. Valves are provided at the end of the first main pipe away from the first branch pipe, on the second branch pipe, between the middle of the first branch pipe and one end of the first branch pipe, between the middle of the first branch pipe and the other end of the first branch pipe, between the middle of the transition pipe and one end of the transition pipe, and between the middle of the transition pipe and the other end of the transition pipe.

[0017] By adopting the above embodiments, the setting of multiple valves enables controllability of material discharge and ensures the pretreatment effect.

[0018] In some embodiments of this utility model, the second pipe group further includes a third branch pipe and a fourth branch pipe, one end of the third branch pipe is connected to the outlet of the first screw pump, and the other end of the third branch pipe is connected to one end of the transition pipe.

[0019] One end of the fourth branch pipe is connected to the outlet of the second screw pump, and the other end of the fourth branch pipe is connected to the other end of the transition pipe.

[0020] In some embodiments of this utility model, a circulation pipe is also included, one end of which is connected to the hydrolysis tank and the other end of which is connected to the fermentation device.

[0021] By adopting the above embodiments, since the material concentration of the hydrolysis pretreatment system is 15%~20%, it cannot meet the requirement of the screw pump pumping concentration below 15%. In order not to increase the effective volume of the hydrolysis tank, the high concentration material of the hydrolysis pretreatment system is diluted by reflux with a concentration of below 13% from the discharge of the fermentation device. By adjusting the reflux ratio, the discharge concentration can be kept below 15% under the action of end stirring.

[0022] In some embodiments of this utility model, a third screw pump is also included, and the third screw pump is provided on the circulation pipe.

[0023] In some embodiments of this utility model, multiple flow meters are also included, with one flow meter installed on both the second main pipe and the circulation pipe.

[0024] By adopting the above embodiments, the amount of fermentation liquid circulation required to dilute the local material concentration is calculated, and the valve on the circulation pipe is automatically opened and closed by measuring the flow meter, thereby achieving the purpose of accurately controlling the material concentration. This method is simple and easy to operate.

[0025] In some embodiments of this utility model, the hydrolysis tank includes a tank body and a stirrer. The stirrer is inserted into the hydrolysis tank, and the end of the first pipe group away from the first screw pump is connected to the tank body.

[0026] By adopting the above embodiments, the mixer configuration can ensure that the material is relatively uniform, thereby ensuring the uniformity of the output.

[0027] In summary, this application has the following beneficial technical effects: by setting up the first screw pump, it achieves relatively stable operation, low maintenance cost, easy operation and low equipment noise without changing the total concentration of raw materials in the hydrolysis tank, without increasing the volume of the hydrolysis tank, without reducing the gas production rate of the fermentation device, and without affecting the microbial system environment. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1A schematic top view of a discharge device for fermentation pretreatment of fibrous materials according to some embodiments of the present invention is shown.

[0030] Figure 2 A schematic front view of a discharge device for fermentation pretreatment of fibrous materials according to some embodiments of the present invention is shown.

[0031] Figure 3 A side view schematically illustrates a discharge device for the fermentation pretreatment of fibrous materials according to some embodiments of the present invention.

[0032] Figure 4 A schematic diagram of the pretreatment process of the discharge device for the fermentation pretreatment of fibrous materials according to some embodiments of the present invention is shown.

[0033] Figure label:

[0034] 1. Hydrolysis tank; 11. Tank body; 12. Mixer; 2. Fermentation device; 3. Discharge pump set; 31. First screw pump; 32. Second screw pump; 33. Pump foundation; 34. First pipe assembly; 341. First branch pipe; 342. First main pipe; 343. Second branch pipe; 35. Second pipe assembly; 351. Transition pipe; 352. Third branch pipe; 353. Fourth branch pipe; 354. Second main pipe; 4. Third screw pump; 5. Fermentation broth; 6. Fiber material; 7. Circulation pipe; 8. Valve; 9. Flow meter. Detailed Implementation

[0035] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0036] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0038] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.

[0039] like Figures 1 to 4 As shown, according to an embodiment of the first aspect of this utility model, a discharge device for the fermentation pretreatment of fiber materials is proposed, including a hydrolysis tank 1 and a discharge pump group 3. One end of the discharge pump group 3 is connected to the hydrolysis tank 1, and the other end of the discharge pump group 3 is connected to the fermentation device 2. The discharge pump group 3 includes a first screw pump 31, a first pipe group 34 and a second pipe group 35. The inlet of the first screw pump 31 is connected to the hydrolysis tank 1 through the first pipe group 34, and the outlet of the first screw pump 31 is connected to the fermentation device 2 through the second pipe group 35.

[0040] In the above embodiment, it should be noted that the fiber material 6 is first put into the hydrolysis tank 1 by a loader, and then the fiber material 6 is pumped from the hydrolysis tank 1 into the fermentation device 2 by the first screw pump 32 for fermentation. The fermentation liquid 5 is then circulated back to the hydrolysis tank 1 to fully mix the high-concentration fiber material at the end of the hydrolysis tank 1 with the reflux fermentation liquid, thereby reducing the material concentration near the outlet of the hydrolysis tank 1 and ensuring uniform concentration. The diluted and uniformly mixed material is then stably transported to the fermentation system by the first screw pump 31 for anaerobic fermentation.

[0041] The technical effects achieved by the above embodiments are as follows: by setting the first screw pump 31, the system achieves relatively stable operation, low maintenance cost, easy operation and low equipment noise without changing the total concentration of raw materials in the hydrolysis tank 1, without increasing the volume of the hydrolysis tank 1, without reducing the gas production rate of the fermentation device and without affecting the microbial system environment.

[0042] Optional, such as Figures 1 to 3 As shown, it also includes a second screw pump 32, which is disposed between the first pipe group 34 and the second pipe group 35 and is connected in parallel with the first screw pump 31.

[0043] In the above optional embodiments, it should be noted that a pump base 33 is also included, and the first screw pump 31 and the second screw pump 32 are both mounted on the pump base 33.

[0044] The advantages of the above optional embodiments are that the second screw pump 32 can be configured in conjunction with the first screw pump 31 to form a one-for-one standby configuration, ensuring the reliability of the device operation.

[0045] Optional, such as Figures 1 to 3 As shown, the first pipe group 34 includes a first main pipe 342 and a first branch pipe 341, and the second pipe group 35 includes a second main pipe 354 and a transition pipe 351.

[0046] One end of the first main pipe 342 is connected to the hydrolysis tank 1, the other end of the first main pipe 342 is connected to the middle of the first branch pipe 341, one end of the first branch pipe 341 is connected to the inlet of the first screw pump 31, and the other end of the first branch pipe 341 is connected to the inlet of the second screw pump 32.

[0047] One end of the transition pipe 351 is connected to the outlet of the first screw pump 31, and the other end of the transition pipe 351 is connected to the outlet of the second screw pump 32. One end of the second main pipe 354 is connected to the middle of the transition pipe 351, and the other end of the second main pipe 354 is connected to the fermentation device 2.

[0048] The second pipe assembly 35 also includes a third branch pipe 352 and a fourth branch pipe 353. One end of the third branch pipe 352 is connected to the outlet of the first screw pump 31, and the other end of the third branch pipe 352 is connected to one end of the transition pipe 351.

[0049] One end of the fourth branch pipe 353 is connected to the outlet of the second screw pump 32, and the other end of the fourth branch pipe 353 is connected to the other end of the transition pipe 351.

[0050] In the above optional embodiments, it should be noted that the first branch pipe 341 is welded to the first main pipe 342 and is interconnected; the second main pipe 354 is welded to the transition pipe 351 and is interconnected.

[0051] Optional, such as Figures 1 to 3 As shown, the first pipe group 34 also includes a second branch pipe 343, one end of which is connected to the hydrolysis tank 1, and the other end of which is connected to the first main pipe 342.

[0052] In the above optional embodiments, it should be noted that the second branch pipe 343 is welded to and connected to the first main pipe 342.

[0053] The beneficial effects of the above optional embodiments are as follows: by setting the second branch pipe 343, it can cooperate with the first main pipe 342 to split a branch, realizing that one branch is set in the middle and upper part for discharging the uniformly mixed material, and the other branch is set in the bottom for discharging the bottom sediment sludge, thus ensuring the effective volume of the hydrolysis device.

[0054] Optional, such as Figures 1 to 3 As shown, it also includes multiple valves 8. Valves 8 are provided at the end of the first main pipe 342 away from the first branch pipe 341, on the second branch pipe 343, between the middle of the first branch pipe 341 and one end of the first branch pipe 341, between the middle of the first branch pipe 341 and the other end of the first branch pipe 341, between the middle of the transition pipe 351 and one end of the transition pipe 351, and between the middle of the transition pipe 351 and the other end of the transition pipe 351.

[0055] In the above optional embodiments, it should be noted that valve 8 is a pneumatic valve.

[0056] The advantages of the above optional embodiments are: the controllability of the discharge is achieved by setting multiple valves 8, thus ensuring the pretreatment effect.

[0057] Optional, such as Figures 1 to 3 As shown, it also includes a circulation pipe 7, one end of which is connected to the hydrolysis tank 1, and the other end of which is connected to the fermentation device 2.

[0058] It also includes a third screw pump 4, which is installed on the circulation pipe 7.

[0059] It also includes multiple flow meters 9, with one flow meter 9 installed on each of the second main pipe 354 and the circulation pipe 7.

[0060] The advantages of the above optional embodiments are as follows: by calculating the amount of fermentation liquid circulation required to dilute the local material concentration, measuring it with flow meter 9, and automatically opening and closing valve 8 on circulation pipe 7, the purpose of accurately controlling material concentration can be achieved, which is simple and easy to operate.

[0061] Optional, such as Figures 1 to 3As shown, the hydrolysis tank 1 includes a tank body 11 and a mixer 12. The mixer 12 is inserted into the hydrolysis tank 1, and the end of the first pipe group 34 opposite to the first screw pump 31 is connected to the tank body 11.

[0062] The advantages of the above optional embodiments are: the setting of the mixer 12 can ensure that the material is relatively uniform, thereby ensuring the uniformity of the output.

[0063] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A discharge device for a fermentation pretreatment of a fibrous material, characterized in that The device comprises a hydrolysis tank (1) and a discharge pump group (3), one end of the discharge pump group (3) is communicated with the hydrolysis tank (1), and the other end of the discharge pump group (3) is communicated with a fermentation device (2); the discharge pump group (3) comprises a first screw pump (31), a first pipe group (34) and a second pipe group (35), the water inlet of the first screw pump (31) is communicated with the hydrolysis tank (1) through the first pipe group (34), and the water outlet of the first screw pump (31) is communicated with the fermentation device (2) through the second pipe group (35).

2. A discharge device for a fibrous material fermentation pretreatment according to claim 1, characterized in that The device further comprises a second screw pump (32), the second screw pump (32) is arranged between the first pipe group (34) and the second pipe group (35) and is connected with the first screw pump (31) in parallel.

3. A discharge device for a fibrous material fermentation pretreatment according to claim 2, characterized in that The first pipe group (34) comprises a first main pipe (342) and a first branch pipe (341), and the second pipe group (35) comprises a second main pipe (354) and a transition pipe (351); one end of the first main pipe (342) is communicated with the hydrolysis tank (1), the other end of the first main pipe (342) is connected with the middle part of the first branch pipe (341), one end of the first branch pipe (341) is connected with the water inlet of the first screw pump (31), and the other end of the first branch pipe (341) is connected with the water inlet of the second screw pump (32); one end of the transition pipe (351) is connected with the water outlet of the first screw pump (31), the other end of the transition pipe (351) is connected with the water outlet of the second screw pump (32), one end of the second main pipe (354) is connected with the middle part of the transition pipe (351), and the other end of the second main pipe (354) is connected with the fermentation device (2).

4. A discharge device for a fibrous material fermentation pretreatment according to claim 3, characterized in that The first pipe group (34) further comprises a second branch pipe (343), one end of the second branch pipe (343) is communicated with the hydrolysis tank (1), and the other end of the second branch pipe (343) is connected with the first main pipe (342).

5. A discharge device for a fibrous material fermentation pretreatment according to claim 4, characterized in that The device further comprises a plurality of valves (8), the valves (8) are arranged on the end of the first main pipe (342) away from the first branch pipe (341), the second branch pipe (343), the middle part of the first branch pipe (341) and the end of the first branch pipe (341), the middle part of the first branch pipe (341) and the other end of the first branch pipe (341), the middle part of the transition pipe (351) and one end of the transition pipe (351), and the middle part of the transition pipe (351) and the other end of the transition pipe (351).

6. The fiber material fermentation pretreatment discharge apparatus according to claim 3, characterized by The second pipe group (35) further comprises a third branch pipe (352) and a fourth branch pipe (353), one end of the third branch pipe (352) is connected with the water outlet of the first screw pump (31), and the other end of the third branch pipe (352) is connected with one end of the transition pipe (351); one end of the fourth branch pipe (353) is connected with the water outlet of the second screw pump (32), and the other end of the fourth branch pipe (353) is connected with the other end of the transition pipe (351).

7. A discharge device for a fibrous material fermentation pretreatment according to any one of claims 3 to 6, characterized in that A circulating pipe (7) is further included, one end of the circulating pipe (7) being communicated into the hydrolysis tank (1), and the other end of the circulating pipe (7) being connected with a fermentation device (2).

8. A discharge device for a fibrous material fermentation pretreatment according to claim 7, characterized in that A third screw pump (4) is further included, the third screw pump (4) being arranged on the circulating pipe (7).

9. A discharge device for a fibrous material fermentation pretreatment according to claim 8, characterized in that A plurality of flow meters (9) are further included, one of the flow meters (9) being arranged on the second main pipe (354) and the circulating pipe (7).

10. The fiber material fermentation pretreatment discharge apparatus according to claim 1, characterized by The hydrolysis tank (1) includes a tank body (11) and an agitator (12), the agitator (12) being inserted on the hydrolysis tank (1), and one end of the first pipe group (34) being communicated into the tank body (11) and away from the first screw pump (31).

Images