WO2023029595A1

WO2023029595A1 - Production line-type comprehensive treatment system for distillers grains

Info

Publication number: WO2023029595A1
Application number: PCT/CN2022/093438
Authority: WO
Inventors: 邹智挥; 邹智元; 陈爽; 杜曼诺; 波提普拉纳; 杨涛; 胡雪菲; 杜建华; 马正禄; 曾锐; 葛非凡; 王若尧; 曲昌镭; 陈治均; 王晨宇; 赵书雅; 雷佳禄; 刘高位
Original assignee: 四川智翔翼科技有限公司; 四川轻化工大学; 邹智挥; 四川智仁发生物科技有限公司; 邹智元
Priority date: 2021-09-01
Filing date: 2022-05-18
Publication date: 2023-03-09
Also published as: NL2032922B1; CN113857201A; NL2032922A9; NL2032922A; TW202402417A

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

An assembly line form comprehensive processing system for distiller's grains

technical field

The invention belongs to the technical field of environmental protection, and relates to distiller's grain processing equipment, in particular to a distiller's grain comprehensive processing system in the form of an assembly line.

Background technique

Distiller's grains are residues left after coarse filtration of grains through brewing and fermentation, and distiller's grains waste liquid is attached to it. Distiller's grains waste liquid is a high-concentration organic waste liquid with a certain density. Distiller's grains are rich in protein and ribose, and also contain a variety of trace elements, vitamins and various bacterial colonies. Due to the complex composition and high water content of distiller's grains, if they are not processed in time, they will spoil and deteriorate. At present, the mainstream comprehensive utilization methods of distiller's grains mainly fall into three categories: extraction of valuable substances, recovery of biogas by anaerobic fermentation, and use as livestock feed.

The extraction of related substances in the method of comprehensive utilization of distiller's grains creates the maximum regeneration value for distiller's grains, but the process is complicated, and the distiller's grains after extraction will also cause serious pollution to the environment. The method of recovering biogas has caused a lot of waste of high-quality resources for no reason. Using distiller's grains as livestock feed has naturally become the first choice, but in practical applications, distiller's grains directly used as feed taste poor, and the high-concentration organic waste attached to distiller's grains is polluting to a certain extent, and will cause moldy distiller's grains in a short period of time and cannot be stored for a long time. The annual output of distiller's grains in my country is about tens of millions of tons, and distiller's grains are a kind of solid waste that needs to be disposed of in a timely manner. In the existing methods, there is a lack of an assembly line treatment method with high comprehensive economic benefits, and it is necessary to avoid waste in this process. and pollute the environment after treatment.

Contents of the invention

In order to overcome the defects in the prior art, the invention discloses a comprehensive processing system for distiller's grains in the form of an assembly line.

The integrated processing system of distiller's grains in the form of an assembly line of the present invention includes a distiller's grains conveying system, a distiller's grains washing system, and a distiller's grains cleaning system;

The distiller's grains conveying system includes a feeder and an inclined conveyor belt; the inlet of the feeder is flush with the table top of the piled grains platform where the distiller's grains are stacked; the inlet and outlet of the inclined conveyor belt are respectively set at the outlet of the feeder and the centrifugal washing equipment at the entrance of

The distiller's grains washing system includes centrifugal washing equipment and a plurality of cascaded solid-liquid separation equipment with helical blades for heavy substances; A drain valve connected by a pipe; the cleaning distiller's grains processing system includes a belt filter press, a dryer and a pulverizing grinder.

Preferably, it also includes a bad liquid utilization and circulation system, the bad liquid utilization and circulation system includes a bad liquid temporary storage tank connected with the bad liquid delivery pipe, and a hydroponic field connected with the bad liquid temporary storage tank; A water pump is connected to the water outlet of the hydroponic field, and is connected to the dry field and the temporary storage pool of circulating water through the water pump, and the pipeline of the temporary storage pool of circulating water is connected to the high-pressure water spray port of the heavy material helical blade solid-liquid separation equipment and the centrifugal washing machine. The water inlet of the equipment.

Preferably, the upper layer of the hydroponic field is a foam board, and the lower layer is a planting pond, and the foam board has planting holes evenly arranged for planting, and there is a planting net immersed in the planting pond of the lower layer in the planting hole; the planting pond Connect with the bad liquid temporary storage pool.

Preferably, the bad liquid temporary storage tank is equipped with an aeration blower, and the upper side wall of the bad liquid temporary storage tank is provided with a plurality of overflow channels connecting the hydroponic fields.

Preferably, the water outlet of the hydroponic field is provided with a pH value monitoring device and a controller connected to it, and the controller is also connected to the water pump.

Preferably, the bad liquid temporary storage tank is provided with an adder.

Preferably, the heavy material helical blade solid-liquid separation equipment includes an inlet pool, the inlet pool has a semicircular ascending discharge channel, a spiral blade separator is arranged in the ascending discharge channel, and the ascending A discharge port is provided at the end of the discharge channel, and the drain valve is provided at the bottom of the inlet pool.

Preferably, an inclined gradient groove is arranged below the outlet, and a plurality of linear grooves are arranged on the inclined gradient groove.

Preferably, the side wall of the inlet pool is provided with an overflow port, and a filter screen is provided on the overflow port; the overflow port is higher than the level of the treatment system ground.

Preferably, the high-pressure water injection port of the last stage in the plurality of cascaded helical blade solid-liquid separation equipment for heavy substances is connected to the tap water pipe network.

Compared with the prior art, the integrated distiller's grains processing system in the form of an assembly line according to the present invention has the following beneficial effects:

1. The present invention uses an automated assembly line to process the distiller's grains in an efficient manner. The distiller's grains are washed in an assembly line, and then the distiller's grains are press-filtered, dried, crushed and ground, packaged and stored. The product can be stored for a long time, and the utilization value of the distiller's grains is improved after treatment. Distiller's grains are prone to corruption and deterioration.

2. The solid waste finally obtained by using the present invention can not only be stored for a long time due to cleaning to remove brewing fermentation products and impurities, but also can be used as raw materials and fillers for biodegradable materials. The product can be applied to various fields, and its effective Turning waste into treasure.

3. Since many fermentation products in the dried lees will enter the interior of the distiller's grains, it will be more difficult to be released and cleaned in the subsequent washing process. The invention performs washing before the distiller's grains are dried, which can reduce the cleaning difficulty.

4. Since the particle size of the distiller's grain powder after grinding will be closer to that of the distiller's grain sand, the distiller's grain powder and the distiller's grain sand are more difficult to be separated, and it is easy to mix with water to form a slurry, and it is more difficult to separate the solid from the liquid. The present invention washes distiller's grains before crushing and grinding, which can greatly improve the cleaning efficiency,

5. The present invention applies the distiller's grains produced in the cleaning process to agricultural planting as a liquid fertilizer, and realizes the maximum utilization of the remaining value of the distiller's grains while solving the problem of environmental pollution.

6. The present invention combines distiller's grains treatment with agricultural production, and selectively transports the nutrients in the distiller's grains between the hydroponic crops and the upland crops through the concentration of organic matter as a judgment index, ensuring the normal growth of different crops and making distiller's grains liquid is fully utilized.

7. In the present invention, the dross liquid absorbed and purified by crops is recycled, and the waste of water resources is reduced while the processing of distiller's grains is completed.

8. The present invention utilizes the layout of the equipment and system to use the height difference to save energy and transport the bad liquid in the treatment system, and can achieve the effect of different process requirements and local conditions through multiple layout methods of the equipment.

Description of drawings

Fig. 1 is a concrete schematic flow chart when the present invention works;

Fig. 2 is a schematic diagram of a specific embodiment of the distiller's grains comprehensive treatment system of the present invention;

Fig. 3 is a schematic diagram of yet another specific embodiment of the distiller's grains comprehensive treatment system of the present invention;

Fig. 4 is a schematic diagram of a specific embodiment of the heavy material helical blade solid-liquid separation device of the present invention;

Fig. 5 is a schematic diagram of a specific embodiment of the bad liquid utilization and circulation system of the present invention;

Fig. 6 is a schematic cross-sectional view of a specific embodiment of the hydroponic field of the present invention;

The main signs and names in the drawings are: 1-feeder, 2-inclined conveyor belt, 3-centrifugal washing equipment, 4-helical blade solid-liquid separation equipment for heavy materials, 41-overflow port, 42-drain valve, 43-outlet Feed port, 44-overflow line, 5-inclined gradient tank, 51-high pressure water jet, 6-bad liquid temporary storage tank, 61-overflow channel, 7-aeration blower, 8-hydroponic field, 81-foam board, 82-planting pond, 83-planting hole, 9-crops, 10-heap platform, 11-processing system ground.

Detailed ways

Specific embodiments of the present invention will be further described in detail below.

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments, but it should not be understood that the scope of the above subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of the present invention, various replacements and changes made according to common technical knowledge and customary means in this field shall be included in the scope of the present invention.

The distiller's grains conveying system includes a feeder 1 and an inclined conveyor belt 2; the entrance of the feeder is flush with the top surface of the piled grains platform 10 for stacking distiller's grains, which is convenient for feeding the distiller's grains into the feeder; the entrance and exit of the inclined conveyor belt 2 They are respectively arranged at the outlet of the feeder and the inlet of the centrifugal washing equipment 3;

As shown in Figure 2, the distiller's grains enter from the top opening of the feeder, and a semi-basement can also be set up below the ground where the grains stacking platform is located. The table top of the dregs stacking platform is flush, and in Fig. 2, the dregs stacking platform for temporary storage of untreated distiller's grains is on the same plane as the ground 11 of the processing system, which is convenient for distiller's grains feeding. The ground 11 of the treatment system is the integrated distiller's grains treatment system in the form of an assembly line and the water level index line including the lees utilization and circulation system. And this is also more conducive to the layout of hydroponic fields in the utilization of the bad liquid and the circulation system.

As shown in Figure 3, the assembly line can also be arranged on the ground 11 of the processing system, and the feeder and the heap platform 10 are arranged on the ground 11 higher than the processing system where it is located, and the lower end of the outlet of the feeder is the inlet of the centrifugal washing equipment. Simplify the assembly line equipment according to the actual situation of the workshop.

The inclined conveyor belt 2 sends the distiller's grains into the distiller's grains washing system, which includes centrifugal washing equipment 3 and multiple cascaded heavy material spiral blade solid-liquid separation equipment 4. The number depends on different distiller's grains or final product process requirements, generally 2- Between 4; As shown in Figure 2 and Figure 3, the number of heavy material spiral blade solid-liquid separation equipment changes; the heavy material spiral blade solid-liquid separation equipment is provided with a spiral blade separator, a high-pressure water spray port 51 and a bad The drain valve 42 connected to the liquid delivery pipe.

The centrifugal washing equipment is equipped with a water inlet and rotating blades. The high-speed rotation of the rotating blades drives the centrifugal collision between the water and the distiller's grains, and the soluble starch, protein, soluble organic matter and various bacterial colonies in the distiller's grains are washed out.

During washing, the ratio of the distiller grains volume feed rate to the water intake volume rate in the centrifugal washing equipment can be set as 1:4, for example, by adjusting the feed rate and water flow rate to match the discharge rate of the mixed liquid at the discharge port, Realize the dynamic balance of the mixed liquid in the centrifugal washing equipment. Washing before the drying and crushing of the distiller's grains can prevent many fermented substances in the distiller's grains from entering the interior of the distiller's grains and facilitate the drainage of the distiller's grains, which will greatly improve the cleaning efficiency and degree of washing.

Heavy material spiral blade solid-liquid separation equipment removes moisture from the wet distiller's grains through the spiral blade separator, and uses high-pressure water jets to wash the dehydrated distiller's grains again to remove soluble organic matter in the distiller's grains, and the washed distiller's grains pass through the belt type The filter press is used for pressing, the drier is used for drying, and the pulverizing machine is used for pulverization to obtain dried distiller's grain solidified products.

A specific embodiment of the heavy material helical blade solid-liquid separation device 4 is provided as shown in Figure 4, including an inlet pool, the inlet pool has a semicircular ascending discharge channel with a cross section, and the ascending discharge channel A spiral blade separator is arranged inside, a discharge port is arranged at the end of the ascending discharge channel, and the liquid discharge valve is arranged at the bottom of the inlet pool.

The mixture of distiller's grains and water in the centrifugal washing equipment enters the inlet pool of the heavy material helical blade solid-liquid separation equipment, and the rotating helix of the helical blade separator is the process of sending the mixture of distiller's grains and water upward along the ascending discharge channel In the process, a large amount of water precipitates and falls in the inlet pool, and a solid-liquid mixture with less water is obtained at the top of the spiral blade separator; through multiple cascaded heavy material spiral blade solid-liquid separation equipment, the distiller's grains can be fully washed and removed most of the moisture.

In the specific embodiment shown in Figure 4, an overflow port 41 is provided on the upper side wall of each inlet pool, and the overflow port 41 can be connected with the bad liquid delivery pipe through a pipeline to prevent the liquid level in the inlet pool from being too high And collect the dregs after cleaning distiller's grains. The overflow port 41 is provided with a strainer to prevent the outflow of the distiller's grains; the level line of the overflow port is higher than the level of the treatment system ground 11, as shown in Fig. 2 and Fig. 3, which will help the lees to pass through The gravitational potential energy is energy-savingly input into the bad liquid temporary storage tank through the bad liquid delivery pipe.

The filtered distiller's grains enter the inclined gradient tank 5 arranged at the rear through the discharge port 43 of the heavy material spiral blade solid-liquid separation equipment. There are many linear grooves arranged on the inclined gradient tank, which can make the high-pressure water spray nozzle spray water. Full contact with distiller's grains improves the washing degree of distiller's grains. After the work of the solid-liquid separation equipment is completed, the bad liquid in the inlet pool can be discharged to the bad liquid temporary storage pool through the bad liquid delivery pipe through the drain valve 42 below the inlet pool.

The high-pressure water nozzle of the last stage in the plurality of cascaded heavy material helical blade solid-liquid separation equipment is connected to the tap water pipe network. The cleanliness of the distiller's grains is ensured by multiple washings and the last washing with tap water. After the distiller's grains are washed, they can enter the belt filter press through the conveyor belt to remove excess water, and the squeezed water is sent to the grain liquid temporary storage tank through the grain liquid conveying pipe. Finally, the distiller's grains are dried, crushed and ground, packaged and stored in sequence.

By transferring the distiller's grains between the two filter cloths of the belt filter press, multiple groups of rollers squeeze and cut repeatedly to squeeze out the water in the distiller's grains, and then use a vacuum pump to absorb the filter cloth, which can realize continuous press filtration and a large amount of cleaning distiller's grains.

The drying chamber can be dried in a stepped cycle, and the drying chamber can also be used for drying crops during the crop harvest season, so as to maximize the utilization of equipment.

In a specific embodiment, the integrated processing system of distiller's grains in the form of an assembly line also includes a dregs utilization and circulation system, and the dregs utilization and circulation system includes a dregs temporary storage tank connected to the dregs delivery pipe, and a distiller's grains tank. A hydroponic field connected to a liquid temporary storage pool; the water outlet of the hydroponic field is connected to a water pump, and the water pump is connected to the dry field and the circulating water temporary storage pool, and the pipeline of the circulating water temporary storage pool is connected to the heavy material spiral blade solid-liquid The high-pressure water spray port of the separation device and the water inlet of the centrifugal washing device.

The distiller's grains in the distiller's grains delivery pipe usually flow into the distiller's grains temporary storage tank, and the distiller's grains containing soluble starch, protein, soluble organic matter, etc. are used as agricultural nutrient solution and discharged into the hydroponic field.

The bad liquid temporary storage tank can also be equipped with an aeration blower 7 to increase enough dissolved oxygen in the bad liquid water body to meet the oxygen demand of aerobic organisms and decompose the organic matter in the bad liquid into crop nutrients. A plurality of overflow channels 61 are provided above the temporary bad liquid storage tank 6 to overflow the upper layer of the bad liquid temporary storage tank into the hydroponic field as liquid fertilizer, while preventing the bad liquid from overflowing.

Nutrients that do not exist in distiller's grains, such as nitrogen, phosphorus, potassium, water-soluble fertilizer, etc., can also be added to the temporary storage tank for distiller's grains, and the aeration blower can be used to mix them evenly to ensure the normal growth of crops.

As shown in Figures 5 and 6, the upper layer of the hydroponic field is a foam board 81, and the lower layer is a planting pool 82. There are planting holes 83 evenly arranged on the foam board for planting, and the planting holes 83 are immersed in the lower layer. The planting net of the planting pool; the planting pool is connected with the bad liquid temporary storage pool.

There are crops planted in the planting net, and the hydroponic liquid is under the foam board, and the hydroponic liquid is the dross liquid overflowed from the temporary storage tank of the distiller's liquid. During the washing process of the distiller's grains, a large amount of water will adhere The soluble organic matter is washed and diluted to become a low-concentration multi-organic bad liquid as a liquid fertilizer. Besides the bad liquid, other trace elements that are helpful to the growth of crops can also be added in the bad liquid.

The water level of the circulating water temporary storage pool can be measured by the water level detection equipment in the circulating water temporary storage pool. When the water level exceeds the upper limit or the dry field is short of water and fertilizer, the bad liquid delivery pipe will discharge the bad liquid to the ditch of the dry field, and the bad liquid will be diluted by the water in the ditch. After that, it can be used for irrigation of dry fields and achieve the effect of fertile soil in dry fields. When the bad liquid in the bad liquid delivery pipe is directly discharged to the ditch of the dry field, the water outlet of the hydroponic field is closed to prevent the loss of agricultural production caused by the drop of the hydroponic liquid level in the hydroponic field.

The water outlet of the hydroponic farmland in the greenhouse can selectively discharge water into the circulating water temporary storage pool or be used as a ditch for dry field irrigation through a water pump. The specific control method is: the water outlet of the hydroponic field is provided with a pH value monitoring device and a controller connected to it, and the controller is also connected to the water pump for control.

Use the PH value as the judgment standard to judge the concentration of organic matter in the outlet water. When the pH value is high, the organic matter concentration is low at this time, and the water in the hydroponic field can be drained to the circulating water temporary storage pool. When the pH value is low, the organic matter concentration is high at this time, and the water can be drained to the dry field ditch. It is further diluted with the water in the ditch and then used for irrigation of dry fields. In this way, the water in the hydroponic field can be further used as a fertilizer for dry fields, and when the yield of bad liquid is large, it can be further used as irrigation for dry fields or circulating water for the system.

8. The present invention adopts the layout of the height difference of the equipment to save energy and transport the bad liquid in the treatment system, and can achieve the effect of different process requirements and local conditions through various layout methods of the equipment.

The foregoing are various preferred embodiments of the present invention. If the preferred implementations in each preferred embodiment are not obviously self-contradictory or based on a certain preferred implementation, each preferred implementation can be used in any superposition and combination. The above examples and the specific parameters in the examples are only for clearly expressing the inventor's invention verification process, and are not used to limit the scope of patent protection of the present invention. The scope of patent protection of the present invention is still subject to its claims. The equivalent structural changes made in the description of the present invention should be included in the protection scope of the present invention in the same way.

Claims

An integrated distiller's grains processing system in the form of an assembly line, which is characterized in that it includes a distiller's grains conveying system, a distiller's grains washing system, and a distiller's grains cleaning system;

The distiller's grains conveying system includes a feeder (1) and an inclined conveyor belt (2); the inlet of the feeder is flush with the top surface of the piled grains platform (10) where the distiller's grains are stacked; the entrance and the outlet of the inclined conveyor belt are respectively arranged on The outlet of the feeder and the inlet of the centrifugal washing equipment;

The distiller's grains washing system includes centrifugal washing equipment (3) and a plurality of cascaded heavy material spiral blade solid-liquid separation equipment (4); the heavy material spiral blade solid-liquid separation equipment is provided with a spiral blade separator, a high-pressure water spray port (51) and a liquid discharge valve (42) connected with the grain liquid conveying pipe; the washing grain processing system includes a belt filter press, a dryer and a pulverizing grinder.
The integrated distiller's grains processing system in the form of an assembly line according to claim 1, characterized in that it also includes a waste liquid utilization and circulation system, and the waste liquid utilization and circulation system includes a waste liquid temporary storage tank connected to the waste liquid delivery pipe 1. The hydroponic field connected with the bad liquid temporary storage pool; the water outlet of the hydroponic field is connected with a water pump, and the dry field and the circulating water temporary storage pool are connected through the water pump, and the pipeline of the circulating water temporary storage pool is connected to the heavy material spiral The high-pressure water nozzle of the blade solid-liquid separation equipment and the water inlet of the centrifugal washing equipment.
The distiller's grains comprehensive processing system as claimed in claim 2, is characterized in that, the upper floor of the hydroponic field is a foam board (81), the lower floor is a planting pool (82), and the foam board has planting holes evenly arranged for planting ( 83), the planting hole (83) has a planting net immersed in the lower planting pool; the planting pool is connected to the bad liquid temporary storage pool.
The distiller's grains comprehensive treatment system according to claim 2, characterized in that, the temporary storage tank for bad liquid (6) is equipped with an aeration blower (7), and the side wall above the temporary storage tank for bad liquid (6) is provided with multiple An overflow channel (61) connecting the hydroponic fields.
The distiller's grains comprehensive treatment system according to claim 2, wherein 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 connected to the water pump for control.
The comprehensive treatment system for distiller's grains according to claim 2, characterized in that the temporary storage tank for distiller's grains is provided with an adder.
The comprehensive processing system for distiller's grains according to claim 1, wherein the solid-liquid separation equipment of the heavy material helical blade comprises an inlet pool, the inlet pool has a semicircular ascending discharge channel, and the ascending discharge channel A spiral blade separator is arranged in the passage, a discharge port is arranged at the end of the ascending discharge passage, and the liquid discharge valve is arranged at the bottom of the inlet pool.
The comprehensive treatment system for distiller's grains according to claim 7, characterized in that an inclined gradient tank (5) is arranged below the outlet, and a plurality of linear grooves are arranged on the inclined gradient tank.
The comprehensive treatment system for distiller's grains according to claim 7, characterized in that, the side wall of the inlet pool is provided with an overflow port (41), and a filter screen is provided on the overflow port; the overflow port is higher than the ground of the treatment system (11 ) level.
The comprehensive treatment system for distiller's grains according to claim 1, characterized in that, the high-pressure water nozzle of the last stage in the plurality of cascaded heavy material helical blade solid-liquid separation equipment is connected to the tap water pipe network.