GB2627137A

GB2627137A - Production line-type comprehensive treatment system for distillers grains

Info

Publication number: GB2627137A
Application number: GB2407108.6A
Authority: GB
Inventors: Tsou Chi-Hui; Tsou Chi-Yuan; Chen Shuang; Reyes De Guzman Manuel; Potiyaraj Pranut; Yang Tao; Hu Xue-Fei; Du Jianhua; Ma Zheng-Lu; Zeng Rui; Ge Feifan; Wang Ruo-Yao; Qu Changlei; Chen Zhijun; Wang Chenyu; Zhao Shuya; Lei Jialu; Liu Gaowei
Original assignee: Chih Yuan Tsou; Sichuan University of Science and Engineering; Sichuan Zhirenfa Biological Technology Co Ltd; Sichuan Zhixiangyi Technology Co Ltd
Current assignee: Chih Yuan Tsou; Sichuan University of Science and Engineering; Sichuan Zhirenfa Biological Technology Co Ltd; Sichuan Zhixiangyi Technology Co Ltd
Priority date: 2021-09-01
Filing date: 2022-05-18
Publication date: 2024-08-14
Also published as: CN113857201B; GB202407108D0; NL2032922B1; NL2032922A; NL2032922A9; CN113857201A; TW202402417A; WO2023029595A1

Abstract

A production line-type comprehensive treatment system for distillers grains, comprising a distillers grains conveying system, a distillers grains washing system, a thin stillage utilization and recycling system, and a washed distillers grains treatment system. The distillers grains conveying system comprises a feeding machine (1) and an inclined conveying belt (2), an inlet and an outlet of the inclined conveying belt (2) being respectively arranged at an outlet of the feeding machine (1) and an inlet of a centrifugal washing device (3). The distillers grains washing system comprises the centrifugal washing device (3) and multiple spiral blade solid-liquid separation devices for heavy substances (4) that are cascaded. The spiral blade solid-liquid separation devices for heavy substances are provided with spiral blade separators, high-pressure water outlets (51) and drain valves (42) connected to a pipe for transporting the thin stillage. The washed distillers grains treatment system comprises a belt filter press, a dryer and a pulverizer mill. The system uses an automatic production line which washes and treats the distillers grains, and then presses, filters, dries, pulverizes and packages the distillers grains. The product can be stored for a long time, and the utilization value of the distillers grains is improved.

Description

A Production Line-type Comprehensive Distiller's Grains Processing System

TECHNICAL FIELD

The present invention belongs to the technical field of environmental protection, relates to a vinasse treatment device, and in particular, to a production line-type comprehensive vinasse treatment system.

BACKGROUND ART

Distiller's grains are the residual solids left after grains are fermented and coarsely filtered in the brewing process, which also contain a viscous high-concentration organic waste liquid known as "stillage." Distiller's grains are rich in proteins and ribose, and they also contain a variety of trace elements, vitamins, and various microbial colonies. Due to the complex composition and high moisture content of distiller's grains, they can quickly deteriorate and spoil if not promptly processed. Currently, the mainstream comprehensive utilization methods for distiller's grains primarily fall into three categories: extraction of valuable substances, anaerobic digestion for biogas recovery, and use as livestock feed.

Extracting valuable substances from distiller's grains maximizes their regenerative value; however, the process is complex, and the residual waste from extraction can still pose severe environmental hazards. On the other hand, biogas recovery methods result in the wasteful loss of high-quality resources. Using distiller's grains as livestock feed has become the preferred method, but in practical applications, direct use as feed results in poor palatability. Additionally, the high concentration of organic waste liquid adhering to the grains is pollutive and can cause the grains to mold quickly, preventing long-term storage. The annual global production of distiller's grains is considerably higher, reaching hundreds of millions of tons. As a solid waste that must be processed timely, there is a lack of a comprehensive and economically efficient production line method in existing techniques that also minimizes environmental pollution during and after processing.

SUMMARY

In order to overcome the defects of the prior art, the present invention discloses a production line-type comprehensive vinasse treatment system, including: a vinasse conveying system, a vinasse washing system, and a cleaned vinasse treatment system.

The vinasse conveying system includes a feeder and an inclined conveyor belt. An inlet of the feeder is flush with an upper table of a vinasse stacking platform for stacking vinasse. An inlet and an outlet of the inclined conveyor belt are provided at an outlet of the feeder and an inlet of a centrifugal washing device respectively.

The vinasse washing system includes the centrifugal washing device and multiple cascaded spiral blade solid-liquid separation devices for heavy materials. Each of the spiral blade solid-liquid separation devices for heavy materials is provided with a spiral blade separator, a high-pressure water spraying port, and a liquid drain valve connected to a vinasse liquid conveying pipe. The cleaned vinasse treatment system includes a belt filter press, a drying machine, and a crushing and grinding machine.

Preferably, the production line-type comprehensive vinasse treatment system further includes a vinasse liquid utilization and circulation system including a temporary vinasse liquid storage tank connected to the vinasse liquid conveying pipe, and a hydroponic field connected to the temporary vinasse liquid storage tank. A water pump is connected to a water outlet of the hydroponic field, and the hydroponic field is connected to a dry field and a temporary circulating water storage tank through the water pump. The temporary circulating water storage tank is in pipe connection with the high-pressure water spraying ports of the spiral blade solid-liquid separation devices for heavy materials and a water inlet of the centrifugal washing device.

Preferably, the upper layer of the hydroponic field consists of a foam board, while the lower layer is a planting pool. The foam board features uniformly arranged planting holes for vegetation, which contain planting nets that dip into the planting pool below; this planting pool is connected to the vinasse storage tank.

Preferably, the vinasse storage tank is equipped with an aeration blower, and the upper side walls of the tank have multiple overflow channels that connect to the hydroponic fields.

Preferably, the hydroponic field's outlet is equipped with a pH monitoring device and a connected controller, which is also connected to the water pump control.

Preferably, the vinasse storage tank is equipped with an additive dispenser.

Preferably, the spiral blade solid-liquid separation device for heavy materials includes an inlet tank having a discharge-up channel with a semi-circular cross section. A spiral blade separator is provided in the discharge-up channel. A discharge port is provided at the end of the discharge-up channel. The liquid drain valve is provided at the bottom of the inlet tank.

Preferably, an inclined gradient trough is situated beneath the discharge outlet, and is arrayed with multiple linear grooves along its surface.

Preferably, the side wall of the inlet pool is equipped with an overflow port, which is covered with a filter screen; this overflow port is situated above the horizontal plane of the ground surface of the processing system.

Preferably, the last stage of the multiple cascaded heavy material spiral blade solid-liquid separation devices is connected to a high-pressure water jet, which is linked to the municipal water supply network.

Compared to existing technologies, the distiller's grains comprehensive treatment system described in this invention offers the following beneficial effects: 1. This invention adopts an automated production line for the efficient processing of distiller's grains. The process involves conveyor belt washing, followed by pressing, drying, milling, and packaging of the distiller's grains. The final product is stable for long-term storage, enhancing the utilization value of distiller's grains and solving the problem of their rapid spoilage and deterioration.

2. A solid waste obtained by using the production line-type comprehensive vinasse treatment system may be stored for a long time and also used as raw materials and fillers of biodegradable materials since brewed fermented products and impurities are washed away. The product may be used in various fields, thereby effectively turning waste into treasure.

3. According to the production line-type comprehensive vinasse treatment system, vinasse is washed before being dried, thereby reducing the cleaning difficulty. Due to the fact that many fermentation products penetrate into the distiller's grains during the drying process, they become more difficult to release during subsequent washing steps, making the grains harder to clean. This invention proposes washing the distiller's grains before drying, which can significantly reduce the difficulty of cleaning.

4. According to the comprehensive production line-type system for vinasse treatment, the vinasse is washed prior to being crushed and ground. This pre-washing step significantly enhances cleaning efficiency. Milling distiller's grains into powder results in particles that closely resemble the size of those found in the mash and sediment, complicating the separation of the powdered grains from the mash. Moreover, this similarity in particle size promotes the mixing of the grains with water to form a slurry, which further impedes solid-liquid separation. By implementing washing before the milling and grinding processes, this invention effectively improves the overall cleaning efficiency.

5. According to the production line-type comprehensive vinasse treatment system, vinasse liquid produced in the cleaning process is applied, as a liquid fertilizer, to agricultural cultivation, thereby achieving maximum utilization of the residual value of vinasse while solving the problem of environmental pollution.

6. The production line-type comprehensive vinasse treatment system ensures normal growth of different crops and allows full use of vinasse liquid.

7. In the production line-type comprehensive vinasse treatment system, vinasse liquid absorbed and purified by crops is recycled, thereby completing the treatment of vinasse while reducing the waste of water resources.

8. By means of a high-low water head layout of the device and the system, vinasse liquid is conveyed in the treatment system in an energy-saving manner, and the effects of different process requirements and local conditions can be achieved by various layout modes.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. I is a schematic diagram of a specific flow of a production line-type comprehensive vinasse treatment system according to the present invention during operation.

FIG. 2 is a schematic diagram of a specific embodiment of the comprehensive vinasse treatment system according to the present invention.

FIG. 3 is a schematic diagram of another specific embodiment of the comprehensive vinasse treatment system according to the present invention.

FIG. 4 is a schematic diagram of a specific embodiment of a spiral blade solid-liquid separation device for heavy materials according to the present invention.

FIG. 5 is a schematic diagram of a specific embodiment of a vinasse liquid utilization and circulation system according to the present invention.

FIG. 6 is a cross-sectional schematic diagram of a specific embodiment of a hydroponic field according to the present invention.

Main symbols in the drawings: 1, feeder; 2, inclined conveyor belt; 3, centrifugal washing device; 4, spiral blade solid-liquid separation device for heavy materials; 41, overflow port; 42, liquid drain valve; 43, discharge port; 44, overflow port water line; 5, inclined gradient groove; 51, high-pressure water spraying port; 6, temporary vinasse liquid storage tank; 61, overflow channel; 7, aeration blower; 8, hydroponic field; 81, foam plate; 82, planting tank; 83, planting hole; 9, crop; 10, vinasse stacking platform; 11, treatment system ground.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following detailed description further elucidates the specific embodiments of the present invention. To clarify the objectives, technical solutions, and advantages of the invention, this description is provided in conjunction with specific embodiments. However, it should not be interpreted that the scope of the invention is limited only to the embodiments described here. Various modifications and changes can be made without departing from the core technical concepts of the invention, utilizing conventional technical knowledge and means within the field, and such adaptations should be considered within the scope of the invention.

A production line-type comprehensive vinasse treatment system of the present invention includes a vinasse conveying system, a vinasse washing system, and a cleaned vinasse treatment system.

The vinasse conveying system includes a feeder 1 and an inclined conveyor belt 2. An inlet of the feeder is flush with an upper table of a vinasse stacking platform 10 for stacking vinasse, thereby facilitating the feeding of vinasse into the feeder. An inlet and an outlet of the inclined conveyor belt 2 are provided at an outlet of the feeder and an inlet of a centrifugal washing device 3 respectively.

As shown in FIG. 2, vinasse enters from a top opening of the feeder. A semi-basement may also be provided below the ground where the vinasse stacking platform is located. The feeder and the inclined conveyor belt are provided in the semi-basement. An upper end of the feeder is flush with the upper table of the vinasse stacking platform where the vinasse is stacked. In FIG. 2, the vinasse stacking platform where untreated vinasse is temporarily stacked is in the same plane as a treatment system ground 11, so as to facilitate the feeding of the vinasse. The treatment system ground 11 is a high-low water head index line of a comprehensive vinasse treatment system in a pipelining form and a vinasse liquid utilization and circulation system included therein. An overflow port water line 44 is located above the high-low water head index line, thereby facilitating conveying of vinasse liquid in the entire system and also contributing to the layout of a hydroponic field in the vinasse liquid utilization and circulation system.

As shown in FIG. 3, a pipeline may also be provided on the treatment system ground 11. The feeder and the vinasse stacking platform 10 are provided above the treatment system ground 11. A lower end of the outlet of the feeder is a material inlet of the centrifugal washing device. A pipelining device is simplified according to actual situations of a workshop.

The inclined conveyor belt 2 feeds vinasse into the vinasse washing system, including the centrifugal washing device 3 and multiple cascaded spiral blade solid-liquid separation devices for heavy materials 4. The number depends on different vinasse or final product process requirements, and is generally 2-4. As shown in FIGS. 2 and 3, the number of spiral blade solid-liquid separation devices for heavy materials is changed. Each of the spiral blade solid-liquid separation devices for heavy materials is provided with a spiral blade separator, a high-pressure water spraying port 51, and a liquid drain valve 42 connected to a vinasse liquid conveying pipe.

The centrifugal washing device is internally provided with a water inlet and a rotating blade. The rotating blade rotates at a high speed to drive water and vinasse to collide centrifugally, so as to wash out soluble starch, protein, soluble organic matters and various bacterial colonies in the vinasse.

During washing, the ratio of a volumetric feed rate of the vinasse to a volumetric inflow rate in the centrifugal washing device may be, for example, set as 1:4. The dynamic balance of mixed liquid in the centrifugal washing device is achieved by adjusting the feed rate and the inflow rate to match the discharge rate of the mixed liquid at the discharge port. By washing the vinasse prior to drying, crushing and grinding, much of the ferment in the vinasse liquid is prevented from entering the interior of the vinasse and drainage of the vinasse is facilitated, thereby greatly improving the cleaning efficiency and the cleaning degree.

The spiral blade solid-liquid separation devices for heavy material dewaters the wet vinasse through the spiral blade separator, and uses the high-pressure water spraying port to wash the dewatered vinasse again, so as to remove easily soluble organic matters in the vinasse. The washed vinasse is filter-pressed by a belt filter press, dried by a drying machine, and crushed by a crushing and grinding machine to obtain a dried vinasse solidified product.

As shown in FIG. 4, a specific embodiment of the spiral blade solid-liquid separation device for heavy materials 4 is provided. The device includes an inlet tank having a discharge-up channel with a semi-circular cross section. A spiral blade separator is provided in the discharge-up channel. A discharge port is provided at the end of the discharge-up channel. The liquid drain valve is provided at the bottom of the inlet tank.

A mixture of vinasse and water in the centrifugal washing device enters the inlet tank of the spiral blade solid-liquid separation device for heavy materials. The rotating spiral of the spiral blade separator is upward along the discharge-up channel. A large amount of water precipitates and falls down in the inlet tank during the process of conveying the mixture of vinasse and water upwards, and a solid-liquid mixture with less water content is obtained at the top of the spiral blade separator. The vinasse may be thoroughly washed and most of the water may be removed by the multiple cascaded spiral blade solid-liquid separation devices for heavy materials.

In the embodiment shown in FIG. 4, an overflow port 41 is provided at an upper side wall of each inlet tank. The overflow port 41 may be in pipe connection with the vinasse liquid conveying pipe, thereby preventing the liquid level in the inlet tank from being too high, and collecting vinasse liquid after cleaning the vinasse. The overflow port 41 is provided with a filter screen for preventing the vinasse from flowing out. The overflow water line is above a horizontal plane of the treatment system ground 11, as shown in FIGS. 2 and 3, which will contribute to the energy-saving input of the vinasse liquid into a temporary vinasse liquid storage tank through the vinasse liquid conveying pipe by gravitational potential energy.

The vinasse after water filtration enters a rear inclined gradient groove 5 through a discharge port 43 of the spiral blade solid-liquid separation device for heavy materials. Multiple linear grooves are arranged on the inclined gradient groove, whereby water flow sprayed from the high-pressure water spraying port may be in full contact with the vinasse to improve the cleaning degree of the vinasse. When the operation of the solid-liquid separation device is completed, the vinasse liquid in the inlet tank may be drained to the temporary vinasse liquid storage tank through the vinasse liquid conveying pipe via the liquid drain valve 42 below the inlet tank.

The last-stage high-pressure water spraying port in the multiple cascaded spiral blade solid-liquid separation devices for heavy materials is connected to a tap water pipe network. The cleaning degree of the vinasse is ensured by multiple washes and the final wash with tap water. After the vinasse is cleaned, excess water may be removed by entering the belt filter press via a conveyor belt, and the pressed water may be conveyed into the temporary vinasse liquid storage tank through the vinasse liquid conveying pipe. And then the vinasse is dried, crushed, ground, and packaged, and stored successively.

By conveying the vinasse between two filter cloths of the belt filter press, the vinasse is repeatedly squeezed and sheared by multiple groups of rollers to squeeze out the water in the vinasse, and then the filter cloths are sucked by a vacuum pump, whereby a large amount of cleaned vinasse may be continuously filter-pressed.

A drying chamber may be used for stepwise circulation drying, and the drying chamber may also be used for drying crops in the crop harvesting season, so as to realize the maximum utilization of the device.

The production line-type comprehensive vinasse treatment system further includes a vinasse liquid utilization and circulation system including a temporary vinasse liquid storage tank connected to the vinasse liquid conveying pipe, and a hydroponic field connected to the temporary vinasse liquid storage tank. A water pump is connected to a water outlet of the hydroponic field, and the hydroponic field is connected to a dry field and a temporary circulating water storage tank through the water pump. The temporary circulating water storage tank is in pipe connection with the high-pressure water spraying ports of the spiral blade solid-liquid separation devices for heavy materials and a water inlet of the centrifugal washing device.

The vinasse liquid in the vinasse liquid conveying pipe usually flows into the temporary vinasse liquid storage tank, and the vinasse liquid containing soluble starch, protein, soluble organic matters, etc. in the vinasse is drained into the hydroponic field as an agricultural nutrient solution.

The temporary vinasse liquid storage tank may also be equipped with an aeration blower 7 to add sufficient dissolved oxygen in a vinasse liquid water body, so as to meet the oxygen demands of aerobic organisms and to decompose organic matters in the vinasse liquid into crop nutrients. Multiple overflow channels 61 are provided above the temporary vinasse liquid storage tank 6 for overflowing water in an upper layer of the temporary vinasse liquid storage tank into the hydroponic field as a liquid fertilizer while preventing the overflow of the vinasse liquid.

Nutrients not available in the vinasse, such as water-soluble fertilizers containing nitrogen, phosphorus and potassium, may also be added into the temporary vinasse liquid storage tank through an adder, and are mixed uniformly by the aeration blower to ensure the normal growth of crops.

As shown in FIGS. 5 and 6, the upper layer of the hydroponic field is a foam plate 81, and the lower layer is a planting tank 82. The foam plate is provided with planting holes 83 uniformly arranged for plant planting. Planting nets immersed in the planting tank in the lower layer are provided inside the planting holes 83. The planting tank is connected to the temporary vinasse liquid storage tank.

Crops are planted in the planting nets, and hydroponic liquid is located below the foam plate. The hydroponic liquid is vinasse liquid overflowed from the temporary vinasse liquid storage tank. During the process of vinasse washing, a large amount of water will wash soluble organic matters attached to the vinasse to be diluted into vinasse liquid with a low concentration of multiple organic matters as a liquid fertilizer. In addition to the vinasse liquid, trace elements aiding in crop growth, other than the vinasse liquid, may be added.

The water level within the recirculation water storage pond can be monitored using water level detection equipment. When the water level exceeds the designated high limit or when dry field crops are deficient in water and nutrients, the vinasse transfer pipeline will direct the vinasse into the dry field ditches. Once in the ditches, the vinasse is diluted with water, making it suitable for irrigation of the dry fields and achieving the effect of fertilizing the soil. When the vinasse liquid in the vinasse liquid conveying pipe is directly drained to a dry field ditch, the water outlet of the hydroponic field is closed to prevent the loss of agricultural production caused by the drop of the liquid level of the hydroponic liquid in the hydroponic field.

A water outlet of a greenhouse hydroponic farmland, water may be selectively used for draining water into a temporary circulating water storage tank through a water pump or used as a ditch for dry field irrigation by a water pump. According to a specific control mode, the water outlet of the hydroponic field is provided with a pH value monitoring device and a controller connected thereto, and the controller is also in control connection with the water pump.

The concentration of organic matters in water at the water outlet is determined by using a pH value as the standard. When the pH value is high, the concentration of organic matters is low, and the water in the hydroponic field may be drained to the temporary circulating water storage tank. When the pH value is low, the concentration of organic matters is high, and the water may be drained to the dry field ditch, further diluted with the water in the ditch and used for dry field irrigation. In this way, it is possible to further utilize the water in the hydroponic field as a dry field fertilizer and further as dry field irrigation water or system circulating water when the yield of the vinasse liquid is large.

(1) This invention employs an automated production line for the efficient processing of distiller's grains. The process includes conveyor-belt washing, followed by pressing, drying, milling, grinding, and packaging. This method ensures that the final product can be stored for long periods, significantly enhancing the utilization value of distiller's grains and solving the problem of their rapid spoilage and deterioration.

(2) The solid waste produced by this invention is cleansed of brewing fermentable and impurities, allowing it not only to be stored for extended periods but also to be used as raw material and filler for biodegradable materials. The processed product can be applied in various fields, effectively turning waste into valuable resources.

(3) Due to the penetration of fermentation products into the distiller's grains during the drying process, these products become more difficult to release during subsequent washes, making the grains harder to clean. This invention incorporates a washing step before drying, which significantly reduces the cleaning difficulty.

(4) The milling and grinding of distiller's grains into powder create particles similar in size to those of mash and sediment, making the separation of powdered grains from the mash more challenging. This similarity also facilitates the mixing of the grains with water to form a slurry, further complicating solid-liquid separation. Washing the distiller's grains before milling and grinding greatly improves cleaning efficiency.

(5) The liquid waste produced during the washing process is utilized as liquid fertilizer in agricultural cultivation, addressing environmental pollution issues while maximizing the use of residual value from the distiller's grains.

(6) This invention integrates distiller's grains processing with agricultural production by selectively transporting nutrients from the liquid waste between hydroponically grown crops and dry field crops, based on the concentration of organic matter. This ensures normal growth of various crops and full utilization of the distiller's grains' nutrients.

(7) The invention involves recycling the nutrient-rich liquid waste, purified by crop absorption, thereby reducing water resource wastage while completing the distiller's grains processing.

(8) The inventive layout utilizes the gravitational differences within the equipment arrangement to conserve energy in the transportation of liquid waste. This layout can be adjusted to meet different technological demands and local conditions appropriately.

The foregoing descriptions represent preferred embodiments of this invention, which can be freely combined unless they are explicitly contradictory or dependent on a specific embodiment. The details provided in these examples are intended to clarify the inventor's validation process of the invention and are not intended to limit the scope of patent protection for this invention. The scope of patent protection for this invention is defined by the claims and includes any equivalent structural variations that are based on the content of this specification.

Claims

CLAIMS1. A Production line-type comprehensive distiller's grains processing system comprising: * a distiller's grains conveying system, * a distiller's grains washing system, and * a cleaned distiller's grains treatment system; wherein the distiller's grains conveying system includes a feeder (1) and an inclined conveyor belt (2), the inlet of the feeder being flush with the upper surface of a distiller's grains stacking platform (10); the inlet and outlet of the inclined conveyor belt are positioned respectively at the outlet of the feeder and the inlet of a centrifugal washing device; wherein the distiller's grains washing system includes a centrifugal washing device (3) and multiple cascaded heavy material spiral blade solid-liquid separation devices (4), each equipped with a spiral blade separator, a high-pressure water spraying port (51), and a liquid drain valve (42) connected to a distiller's grains liquid conveying pipe; and wherein the cleaned distiller's grains treatment system includes a belt filter press, a drying machine, and a milling and grinding machine.
2. The Production line-type comprehensive distiller's grains processing system of claim 1, further comprising a distiller's grains liquid utilization and circulation system, which includes a temporary distiller's grains liquid storage tank connected to the distiller's grains liquid conveying pipe, and a hydroponic field connected to the temporary distiller's grains liquid storage tank; a water pump is connected to an outlet of the hydroponic field and links the hydroponic field to a dry field and a temporary circulating water storage tank; the temporary circulating water storage tank is piped to the high-pressure water spraying ports of the heavy material spiral blade solid-liquid separation devices and to a water inlet of the centrifugal washing device.
3. The distiller's grains processing system of claim 2, wherein the upper layer of the hydroponic field is a foam board (81) and the lower layer is a planting tank (82); the foam board features uniformly arranged planting holes (83) for vegetation, which contain planting nets that dip into the planting tank below; the planting tank is connected to the temporary distiller's grains liquid storage tank.
4. The distiller's grains processing system of claim 2, wherein the temporary distiller's grains liquid storage tank (6) is equipped with an aeration blower (7), and the upper side walls of the tank have multiple overflow channels (61) that connect to the hydroponic field.
5. The distiller's grains processing system of claim 2, wherein an outlet of the hydroponic field is equipped with a pH monitoring device and a connected controller, which is also connected to the water pump control.
6. The distiller's grains processing system of claim 2, wherein the temporary distiller's grains liquid storage tank is equipped with an additive dispenser.
7. The Production line-type comprehensive distiller's grains processing system of claim 1, wherein each heavy material spiral blade solid-liquid separation device includes an inlet tank, which has a semi-circular cross-section upward discharge channel; a spiral blade separator is provided within the upward discharge channel; a discharge port is located at the end of the upward discharge channel, and the liquid drain valve is positioned at the bottom of the inlet tank.
8. The distiller's grains processing system of claim 7, wherein below the discharge port, there is an inclined gradient trough (5) arranged with multiple linear grooves along its surface.
9. The distiller's grains processing system of claim 7, wherein the side wall of the inlet tank is equipped with an overflow port (41) covered with a filter screen; the overflow port is situated above the horizontal plane of the ground surface of the processing system (11).
10. The Production line-type comprehensive distiller's grains processing system of claim 1, wherein the high-pressure water spraying port of the last stage of the multiple cascaded heavy material spiral blade solid-liquid separation devices is connected to the municipal water supply network.