A system for extracting vinasse protein and recycling rice hulls

Abstract

The utility model discloses a kind of extraction of vinasse protein and rice hull recycling system, comprising: vinasse conveying assembly, for conveying vinasse;Vinasse cleaning assembly, located at the outlet of the vinasse conveying assembly, vinasse separation assembly, located at the outlet of the vinasse cleaning assembly;Solid-liquid separation assembly is connected with the suspension liquid collection position of the vinasse separation assembly;Multi-effect evaporation assembly is connected with the material outlet of the solid-liquid separation assembly, output concentrated vinasse;Rice hull extrusion assembly is connected with the rice hull outlet of the vinasse separation assembly.The utility model uses vinasse cleaning assembly to stir and wash after vinasse raw material, then enters screening lifting equipment to separate, can improve the solid content of hulling vinasse entering screening lifting, reduce the amount of washing water, save energy consumption, can improve the screening rate of rice hull, reduce the moisture content of wet rice hull after separation, convenient recycling, liquid-solid separation after inclined screen separation, further improve solid content.

Description

Technical Field

[0001] This utility model relates to the field of distillers' grains recycling technology, and in particular to a system for extracting protein from distillers' grains and recycling rice husks. Background Technology

[0002] Distillers' grains are the residue left after brewing, containing organic matter, protein, fiber, etc. Directly discarding them would cause pollution and waste. There are many ways to recycle them, such as as animal feed, fertilizer, food additives, or to extract useful components. Currently, the recycling of distillers' grains faces problems such as low dehydration efficiency, high energy consumption, impure component extraction, or serious pollution.

[0003] Currently, the utilization of distillers' grains remains primarily focused on feed (accounting for over 60%, especially DDGS used for ruminant feed) and fertilizer (direct return to the field or composting). However, the industry faces multiple bottlenecks: high moisture content leads to spoilage (70%-85% water content, rancid within 24 hours), resulting in excessively high dehydration costs that small and medium-sized distilleries cannot afford; complex and fluctuating composition (differences in raw materials / processes lead to nutritional imbalances, mycotoxins, and heavy metal risks) restricts standardized processing; economic dilemmas exist, with homogeneous feed competition squeezed by bulk raw material prices, while high-value utilization (such as functional component extraction and bioconversion) is difficult to scale up due to higher technical costs than benefits; and the lack of a comprehensive collection, storage, and transportation system (short transportation radius for wet grains, dispersed distilleries) and lagging policy standards (lack of national standards for food-grade products) further hinder industrial upgrading.

[0004] For example, patent number 202421486779.8, entitled "A Dewatering System for Beer Waste," specifically includes a dilution tank, a plate filter press, a drying device, and a collection cylinder. The dilution tank is used to introduce and dilute the beer waste; the plate filter press is connected to the outlet of the dilution tank to separate the beer waste into filtrate and filter cake; the drying device is connected to the first outlet of the plate filter press to dry the filter cake; and the collection cylinder is connected to the second outlet of the plate filter press to collect the filtrate. Although this patent solves the technical problems of poor drying effect or high drying cost of beer waste, the rice husk and protein are not separated, and the dried material contains a lot of rice husk fiber, resulting in a feed blending dosage as low as 10%, leading to low market acceptance. For example, patent number 202111544022.0, entitled "An Energy-Saving Device and Process for Producing Protein Feed Using Distillers' Grains," details a process including rice husk separation, solid-liquid separation, fermentation, and low-temperature drying. Rice husk separation utilizes the principle that rice husks have low density and easily float on water. Fresh distillers' grains are immersed in clean water, causing the rice husks to float. The husks are then filtered out through a screen. The process is simple, energy-efficient, and uses basic equipment. Furthermore, the clean water can be recycled through subsequent distillation, making it energy-saving and environmentally friendly. The fermentation equipment features a rationally arranged temperature and humidity sensor, along with humidification and dehumidification devices. The water bath is divided into upper and lower sections, each circulated with water for segmented temperature control. This facilitates timely heat removal when the lower section of the material is hotter than the upper section during static fermentation, resulting in a more uniform temperature distribution and more stable microbial activity and product quality. This patent solves the problems of uneven temperature and humidity distribution, decreased controllability, and unstable product quality during fermentation. However, the water content of the suspended rice husks is still very high, making it unsuitable to directly recycle them into the brewing process. Directly drying the hulled mash after sedimentation consumes a lot of energy. Utility Model Content

[0005] In view of this, the present invention proposes a system for extracting protein from distiller's grains and recycling rice husks.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A system for extracting protein from distiller's grains and recycling rice husks includes: Distillers' grains conveying assembly, used for conveying distillers' grains; A lees cleaning assembly, located at the outlet of the lees conveying assembly, is used to clean and dilute the lees. The lees separation component is located at the outlet of the lees washing component and is used to separate the suspension from the rice husks. A solid-liquid separation component is connected to the suspension collection position of the lees separation component and is used to separate the suspension into filtrate and dehulled lees, with the filtrate being discharged externally. A multi-effect evaporation unit is connected to the material outlet of the solid-liquid separation unit and is used to evaporate and concentrate the hulled distiller's grains to output concentrated distiller's grains. The rice husk extrusion assembly is connected to the rice husk outlet of the distiller's grains separation assembly and is used to extrude and dehydrate the rice husks.

[0007] As a further improvement to the above technical solution: As a further optimization of the above technical solution, the lees cleaning assembly includes a cleaning support, a stirring tank disposed on the cleaning support, a stirring motor disposed at the upper end of the stirring tank, a stirring rod disposed inside the stirring tank and connected to the stirring motor, a stirring blade disposed at the bottom of the stirring rod, and a water surface breaking rake disposed at the middle position of the stirring rod.

[0008] As a further optimization of the above technical solution, an automatic control valve is provided at the outlet of the mixing tank.

[0009] As a further optimization of the above technical solution, the lees separation component includes a lees filter screen located below the outlet of the lees washing component, a filtrate collection tank located at the lower end of the lees filter screen, and a conveyor chain plate located at the front end of the lees filter screen.

[0010] As a further optimization of the above technical solution, the lees filter screen includes a lees filter screen at the inclined end located at the outlet of the lees washing assembly and a lees filter screen at the horizontal end located at one end of the conveyor chain plate.

[0011] As a further optimization of the above technical solution, a scraper is provided above the lees filter screen at the inclined end.

[0012] As a further optimization of the above technical solution, a spraying system is provided at the upper end of the conveyor chain plate.

[0013] As a further optimization of the above technical solution, the lees separation component and the solid-liquid separation component are connected by a booster pump.

[0014] As a further optimization of the above technical solution, the lees conveying component is a lifting conveying device, the solid-liquid separation component is two solid-liquid separators, the rice husk extrusion component is an extrusion screw press, and the multi-effect evaporation component is an evaporation dryer.

[0015] Compared with existing technologies, the beneficial effects of this utility model are: This invention first uses a lees washing component to stir and wash the raw materials, and then puts them into a screening and lifting device for separation. This can increase the solid content of the dehulled lees entering the screening and lifting device, reduce the amount of washing water used, and save energy.

[0016] In the first aspect, this utility model can improve the screening rate of rice husks and reduce the moisture content of wet rice husks after separation, making it easier to recycle. In the second aspect, after separation by inclined sieve, the clear liquid is separated into solid and liquid components, further improving the solid content and reducing the moisture content of the dehulled lees entering the multi-effect evaporator.

[0017] This invention employs multi-effect evaporation to further dehydrate hulled distiller's grains. Multi-effect evaporation has low energy consumption, requires little space, and operates stably. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall system of this utility model; Figure 2 This is a schematic diagram of the structure of the distiller's grains cleaning component equipment of this utility model; Figure 3 This is a schematic diagram of the structure of the distiller's grains separation component of this utility model; Figure 4 This is a schematic diagram of the structure of the multi-effect evaporation component equipment of this utility model.

[0019] In the diagram: 1. Distillers' grains conveying assembly; 2. Distillers' grains washing assembly; 21. Washing support; 22. Mixing tank; 23. Mixing motor; 24. Mixing rod; 25. Mixing blade; 26. Water surface breaking rake; 27. Automatic control valve; 3. Distillers' grains separation assembly; 31. Distillers' grains filter screen; 32. Scraper; 33. Filtration collection tank; 34. Conveyor chain plate; 35. Spraying system; 4. Lifting pump; 5. Solid-liquid separation assembly; 6. Multi-effect evaporation assembly; 7. Rice husk extrusion assembly. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1 As shown, the lees recycling system provided by this technical solution mainly includes the following parts: ① Distillers' grains conveying assembly 1, consisting of attached Figure 1It can be seen that it is mainly used to lift the transported lees. Therefore, the design scheme adopts a lifting and conveying equipment with belt feeding, which can continuously and evenly feed the material. At the same time, it can be equipped with automated monitoring equipment to record the amount of material fed and to automatically control the conveying speed and conveying volume, ensuring the stability of the amount of water added and diluted, making it easy to control the amount of water added and reducing operating costs. Therefore, its main function is to temporarily store, lift and weigh the lees that are unloaded.

[0024] Secondly, this section should also include an underground silo to facilitate the temporary storage of transported materials.

[0025] ② Distillery lees cleaning component 2, consisting of attached Figure 1 With appendix Figure 2 It can be seen that it is mainly used to add lees to achieve cleaning and dilution of lees. Its main structure is a cleaning support 21 for support. A stirring tank 22 is set on the cleaning support 21. An automatic control valve 27 is set at the lower end of the stirring tank 22 to control the flow rate. A stirring motor 23 is set at the upper end of the stirring tank. A stirring rod 24 is set on the output shaft of the stirring motor 23. A stirring blade 25 is set at the bottom of the stirring rod 24 to play the function of swirling stirring. Combined with the horizontal and conical double stirring design of the conical bottom of the tank, and taking into account the agglomeration and suspension state of the lees, a water surface breaking rake 26 is set in the middle of the stirring rod 24. The feed inlet of the lees cleaning component 2 should be located at the position of the lees conveying component 1, and a corresponding water supply pipe should be provided to add water to the mixing drum, thereby achieving the functions of cleaning and diluting the lees.

[0026] ③ Distillers' grains separation component 3, as shown in the attached document Figure 1 With appendix Figure 3 It can be seen that it mainly consists of two parts: one for receiving and filtering materials, and one for conveying materials. The first part mainly includes the lees filter screen 31, which includes an inclined end and a horizontal end. The inclined end of the lees filter screen 31 is located at the outlet of the mixing tank 22 and is used to receive materials. At the same time, a scraper 32 is provided above the inclined end of the lees filter screen 31 to limit the height of the materials and flatten them. The other end of the horizontal end of the lees filter screen 31 is in contact with the material conveying part. A filtrate collection tank 33 is provided below the lees filter screen 31 to collect the filtrate, thereby achieving the effect of suspension separation. The second part mainly consists of a conveyor chain plate 34, which is used to convey the material on the horizontal end of the lees filter screen 31. At the same time, a spray system 35 is installed on the conveyor chain plate 34 to wash the separated rice husks and obtain clean rice husks. The washing water can also flow into the filtrate collection tank 33.

[0027] ④ Solid-liquid separation component 5, as shown in the attached document Figure 1 The filtrate collection tank 33 is connected to the booster pump 4. It mainly consists of two solid-liquid separators that separate the suspension in the filtrate collection tank 33 into filtrate and dehulled lees. ⑤ Multi-effect evaporation unit 6, as attached Figure 1 With appendix Figure 2 As shown, it mainly consists of an evaporation dryer, which is connected to the hulled distiller's grains outlet of the solid-liquid separation component 5. The hulled distiller's grains are further concentrated through multi-effect evaporation to concentrate high-protein content for sale as feed. At the same time, the evaporation dryer consumes little energy and the heat energy can be recovered and utilized in multiple stages.

[0028] ⑥ Rice husk extrusion assembly 7, which is mainly an extrusion screw press, is mainly connected to the outlet of the conveyor chain plate 34. It is used to extrude clean rice husks to separate filtrate and clean rice husks, which are then reused by the winery.

[0029] The processing procedure of this utility model: 1. The lees are placed in the underground silo of the lees conveying component 1 by transfer, and the lees are transported upward by the lees conveying component 1; 2. Enter the lees cleaning component 2. The cyclone cleaning tank is used to introduce lees and dilute and clean them. 3. Open the automatic control valve 27 to allow the cleaned lees to enter the lees separation component 3, where the suspension and clean rice husks are separated. 4. The high-protein suspension in step 3 is pumped into the solid-liquid separation component 5 by the booster pump 4 to separate the filtrate and the dehulled distiller's grains. The filtrate is connected to the sewage pipe to squeeze the sewage and collect it to the tanker for transportation. The dehulled distiller's grains are further concentrated by multi-effect evaporation to concentrate the high-protein content for sale as feed. 5. The clean rice husks from step 3 enter the rice husk extrusion assembly 7, which extrudes the filtrate and clean rice husks. The filtrate is connected to the sewage pipe to extrude the sewage and collect it in a tanker truck for off-site transportation. The clean rice husks are reused by the winery.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A system for extracting protein from distiller's grains and recycling rice husks, characterized in that, include: Distillers' grains conveying assembly (1) is used for conveying distillers' grains; The lees cleaning assembly (2) is located at the outlet of the lees conveying assembly (1) and is used to clean and dilute the lees; The lees separation component (3) is located at the outlet of the lees washing component (2) and is used to separate the suspension from the rice husks; The solid-liquid separation component (5) is connected to the suspension collection position of the lees separation component (3) and is used to separate the suspension into filtrate and dehulled lees, with the filtrate being discharged externally. The multi-effect evaporation component (6) is connected to the material outlet of the solid-liquid separation component (5) and is used to evaporate and concentrate the hulled lees to output concentrated lees. The rice husk extrusion assembly (7) is connected to the rice husk outlet of the distiller's grains separation assembly (3) and is used to extrude and dehydrate the rice husks.

2. The system for extracting protein from distiller's grains and recycling rice husks according to claim 1, characterized in that, The lees cleaning assembly (2) includes a cleaning bracket (21), a mixing tank (22) mounted on the cleaning bracket (21), a stirring motor (23) mounted on the upper end of the mixing tank (22), a stirring rod (24) mounted inside the mixing tank (22) and connected to the stirring motor (23), a stirring blade (25) mounted at the bottom of the stirring rod (24), and a water surface breaking rake (26) mounted in the middle of the stirring rod (24).

3. The system for extracting protein from distiller's grains and recycling rice husks according to claim 2, characterized in that, An automatic control valve (27) is provided at the outlet of the mixing tank (22).

4. The system for extracting protein from distiller's grains and recycling rice husks according to claim 1, characterized in that, The lees separation component (3) includes a lees filter screen (31) located below the outlet of the lees washing component (2), a filtrate collection tank (33) located at the lower end of the lees filter screen (31), and a conveyor chain plate (34) located at the front end of the lees filter screen (31).

5. The system for extracting protein from distiller's grains and recycling rice husks according to claim 4, characterized in that, The lees filter (31) includes an inclined end of the lees filter (31) located at the outlet of the lees washing assembly (2) and a horizontal end of the lees filter (31) located at one end of the conveyor chain plate (34).

6. The system for extracting protein from distiller's grains and recycling rice husks according to claim 5, characterized in that, A scraper (32) is provided above the lees filter screen (31) at the inclined end.

7. The system for extracting protein from distiller's grains and recycling rice husks according to claim 4, characterized in that, A spray system (35) is provided at the upper end of the conveyor chain plate (34).

8. The system for extracting protein from distiller's grains and recycling rice husks according to claim 1, characterized in that, The lees separation component (3) and the solid-liquid separation component (5) are connected by a booster pump (4).

9. The system for extracting protein from distiller's grains and recycling rice husks according to claim 1, characterized in that, The lees conveying assembly (1) is a lifting and conveying device, the solid-liquid separation assembly (5) consists of two solid-liquid separators, the rice husk extrusion assembly (7) is an extrusion screw press, and the multi-effect evaporation assembly (6) is an evaporation dryer.

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