Treatment device for starchy raw material, fermentation alcohol production device, and production method

Abstract

The present application relates to the technical field of fermented alcohol production, and discloses a starch raw material processing device, a fermented alcohol production device and a production method. The starch raw material processing device comprises a powder slurry tank and a crushing cylinder. The powder slurry tank has a mixing chamber, an inlet and an outlet which are respectively connected to the mixing chamber. The crushing cylinder is arranged at the upper end of the powder slurry tank. A feeding port is arranged on the crushing cylinder. A crushing mechanism is arranged in the crushing cylinder to crush the starch raw material. The lower end of the crushing cylinder is formed as a discharge end and is connected to the inlet of the powder slurry tank, so that the crushed starch raw material can fall into the mixing chamber of the powder slurry tank. The processing device provided by the present application can save the transfer process of the crushed starch raw material and avoid the loss of the starch raw material during the transfer process.

Description

Technical Field

[0001] This invention relates to the field of fermented alcohol production technology, specifically to a starch raw material processing device, a fermented alcohol production device, and a production method. Background Technology

[0002] Fuel ethanol, as an environmentally friendly alternative fuel, plays a vital role in addressing the energy crisis and climate change. Currently, converting starchy raw materials into monosaccharides via enzymatic action and further into ethanol through yeast fermentation is a relatively low-cost and suitable technology for large-scale fuel ethanol production. However, existing processes for producing fuel ethanol from starchy raw materials still have several shortcomings:

[0003] (1) In the process of processing starchy raw materials, the existing technology usually requires the use of crushing equipment to crush the starchy raw materials to a certain particle size in order to fully release the starch in them, and then the crushed starchy raw materials are transferred to fermentation equipment for fermentation treatment. This process is time-consuming, labor-intensive and easy to cause loss of starchy raw materials.

[0004] (2) In the process of fermenting starch raw materials to produce fuel alcohol, the high viscosity accumulation in the fermentation liquid is easily caused by poor starch degradation. The high viscosity accumulation in the fermentation liquid will further lead to a series of problems such as reduced fermentation efficiency, production of by-products and decreased product quality. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art.

[0006] To achieve the above objectives, the present invention provides a processing device for starchy raw materials, including a slurry tank and a crushing cylinder. The slurry tank has a mixing chamber and an inlet and an outlet respectively connected to the mixing chamber. The crushing cylinder is disposed at the upper end of the slurry tank and has a feeding port. A crushing mechanism is disposed inside the crushing cylinder for crushing and processing the starchy raw materials. The lower end of the crushing cylinder is formed as an outlet and is connected to the inlet of the slurry tank, so that the crushed starchy raw materials can fall into the mixing chamber of the slurry tank.

[0007] Preferably, the slurry tank is provided with a stirring mechanism for stirring and mixing the materials in the mixing chamber. A transmission mechanism and a clutch are provided between the stirring mechanism and the crushing mechanism. The crushing mechanism is connected to the output end of the clutch, and the stirring mechanism is driven to the input end of the clutch through the transmission mechanism.

[0008] Preferably, the stirring mechanism includes a stirring shaft and stirring blades fixed on the stirring shaft, and a power unit is provided at the upper end of the slurry tank to drive the stirring shaft to rotate around its own axis; the crushing mechanism includes a rotating rod and a crushing blade holder, the rotating rod is rotatably disposed at the upper end of the crushing cylinder and extends vertically into the cylinder cavity of the crushing cylinder, and the crushing blade holder is disposed on the rod body of the rotating rod located in the cylinder cavity of the crushing cylinder; the rotating rod is coaxially connected to the output end of the clutch, and the stirring shaft is drivenly connected to the input end of the clutch through the transmission mechanism.

[0009] Preferably, the transmission mechanism includes a driving sprocket, a driven sprocket, and a chain. The driving sprocket is coaxially connected to the stirring shaft, the driven sprocket is coaxially connected to the rotating rod, and the chain is wound between the driving sprocket and the driven sprocket to transmit power.

[0010] Preferably, a screen plate is provided inside the crushing cylinder, which is used to divide the cylinder cavity of the crushing cylinder into a first cavity located in the upper layer and a second cavity located in the lower layer. The crushing mechanism is located in the first cavity, and the second cavity is connected to the feed port of the slurry tank through the discharge end. The screen plate is provided with screen holes for connecting the first cavity and the second cavity, and the screen plate is configured to reciprocate in the vertical direction.

[0011] Preferably, a fixing ring is provided at the center of the sieve plate, the fixing ring having a cavity extending vertically for the rotating rod to pass through, and at least one slope is formed at the end of the fixing ring away from the sieve plate. In the circumferential direction of the fixing ring, the slope extends in a direction away from the sieve plate. A pushing rod is provided on the rotating rod, and the pushing rod is configured to cooperate with the slope when the rotating rod rotates, pushing the sieve plate to move vertically.

[0012] Preferably, the edge of the screen plate is provided with a plurality of sliders, the plurality of sliders are spaced apart along the circumference of the screen plate, the inner wall of the crushing cylinder is provided with a plurality of limiting grooves extending in the vertical direction, and the plurality of sliders are respectively housed in the plurality of limiting grooves and can reciprocate along the direction defined by the limiting grooves.

[0013] Preferably, a reset spring is provided at the bottom of the slider, and the bottom end of the reset spring is fixedly connected to the bottom of the limiting groove.

[0014] The present invention also provides a fermentation alcohol production apparatus, including a fermentation tank and the above-mentioned starch raw material processing device, wherein the discharge port of the slurry tank is connected to the liquid inlet of the fermentation tank for conveying the saccharified raw material in the slurry tank to the fermentation tank.

[0015] Preferably, there are multiple fermentation tanks, and multiple discharge ports are provided for each slurry tank. Each discharge port is equipped with a valve, and the multiple discharge ports correspond one-to-one with the liquid inlets of the multiple fermentation tanks.

[0016] The present invention also provides a method for producing fermented alcohol, comprising the steps of saccharifying a crushed starchy raw material and fermenting the sugar solution formed by the saccharification process to obtain alcohol; wherein the crushing and saccharification processes of the starchy raw material are carried out in the aforementioned starchy raw material processing apparatus.

[0017] Preferably, the fermented alcohol production method further includes feeding amylase and the starchy raw material to be crushed into the crushing cylinder together.

[0018] The above technical solution involves feeding starchy raw materials into the crushing cylinder through the feeding port, crushing the raw materials using a crushing mechanism inside the crushing cylinder, and then directly feeding the crushed starchy raw materials into the mixing chamber of the slurry tank through the discharge end at the bottom of the crushing cylinder for subsequent saccharification processing. In other words, the processing device provided by this invention can save the transfer process of crushed starchy raw materials and avoid the loss of starchy raw materials during the transfer process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a starch raw material processing device provided by the present invention;

[0020] Figure 2 This is an exploded view of a starch raw material processing device provided by the present invention;

[0021] Figure 3 This is a partial cross-sectional view of a crushing cylinder provided by the present invention;

[0022] Figure 4 yes Figure 3 An enlarged view of position A in the middle;

[0023] Figure 5 This is a schematic diagram of a fermentation alcohol production apparatus provided by the present invention.

[0024] Explanation of reference numerals in the attached figures

[0025] 100. Slurry tank; 101. Feed inlet; 102. Discharge outlet; 110. Mixing chamber; 120. Stirring mechanism; 121. Stirring shaft; 122. Stirring blades; 130. Power unit; 200. Crushing cylinder; 201. Feeding port; 202. Discharge end; 210. Crushing mechanism; 211. Rotating rod; 2111. Pushing rod; 212. Crushing blade holder; 220. Screen plate; 221. Screen hole; 222. Fixing ring; 2221. Slope; 223. Sliding block; 224. Return spring; 230. First chamber; 240. Second chamber; 250. Limiting groove; 300. Transmission mechanism; 310. Driving sprocket; 320. Driven sprocket; 330. Chain; 400. Clutch; 500. Fermentation tank; 510. Liquid inlet. Detailed Implementation

[0026] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] In this invention, the starchy raw material refers to starch-rich plants or their extracts, specifically categorized into various types such as cereals, root vegetables, and legumes. Specifically, the starchy raw material can be, for example, corn, cassava, wheat, or sweet potato.

[0028] like Figure 1 and Figure 2 As shown, the present invention provides a starch raw material processing device, including a slurry tank 100 and a crushing cylinder 200. The slurry tank 100 has a mixing chamber 110 and an inlet 101 and an outlet 102 respectively connected to the mixing chamber 110. The crushing cylinder 200 is disposed at the upper end of the slurry tank 100. The crushing cylinder 200 is provided with a feeding port 201. The crushing cylinder 200 is provided with a crushing mechanism 210 for crushing and processing the starch raw material. The lower end of the crushing cylinder 200 is formed as an outlet end 202 and is connected to the inlet 101 of the slurry tank 100, so that the crushed starch raw material can fall into the mixing chamber 110 of the slurry tank 100.

[0029] In practical use, the processing device provided by this invention feeds the starchy raw material to be processed into the feeding port 201 of the crushing cylinder 200. The crushing mechanism 210 installed inside the crushing cylinder 200 crushes the starchy raw material. The crushed starchy raw material falls directly into the mixing chamber 110 of the slurry tank 100 through the discharge end 202 at the lower end of the crushing cylinder 200 for subsequent saccharification processing. Through the technical solution provided by this invention, the crushed starchy raw material can directly fall into the slurry tank 100 under gravity for the saccharification process, saving the transfer process of the crushed starchy raw material and avoiding loss of starchy raw material during the transfer process.

[0030] It is understood that, in the technical solution provided by the present invention, in order to ensure that the amylase added during the saccharification process can fully contact the starch raw material, the slurry tank 100 is provided with a stirring mechanism 120. The stirring mechanism 120 is used to stir and mix the materials in the mixing chamber 110, that is, to stir the amylase and the crushed starch raw material.

[0031] In a preferred embodiment, a transmission mechanism 300 and a clutch 400 are provided between the stirring mechanism 120 and the crushing mechanism 210. The crushing mechanism 210 is connected to the output end of the clutch 400, and the stirring mechanism 120 is driven to the input end of the clutch 400 via the transmission mechanism 300. With this configuration, the stirring mechanism 120 and the crushing mechanism 210 share a common power system. In practical use, the clutch 400 is used to transmit and cut off power. When the crushing mechanism 210 needs to be started, the clutch 400 transmits power from the stirring mechanism 120 to the crushing mechanism 210; after crushing is completed, the clutch 400 cuts off the power transmission, retaining only the power at the stirring mechanism 120.

[0032] In some embodiments of the present invention, combined with Figure 2 As shown, the stirring mechanism 120 includes a stirring shaft 121 and stirring blades 122 fixed on the stirring shaft 121. A power unit 130 is provided at the upper end of the slurry tank 100 to drive the stirring shaft 121 to rotate around its own axis. The crushing mechanism 210 includes a rotating rod 211 and a crushing blade holder 212. The rotating rod 211 is rotatably disposed at the upper end of the crushing cylinder 200 and extends vertically into the cylinder cavity of the crushing cylinder 200. The crushing blade holder 212 is disposed on the rod body of the rotating rod 211 located in the cylinder cavity of the crushing cylinder 200. The rotating rod 211 is coaxially connected to the output end of the clutch 400, and the stirring shaft 121 is drivenly connected to the input end of the clutch 400 through the transmission mechanism 300.

[0033] It is understood that in the technical solution provided by this invention, the function of the stirring blade 122 is to rotate with the stirring shaft 121 to agitate the material in the mixing chamber 110, so that the amylase can fully contact the crushed starch raw material and improve the efficiency of converting the starch raw material into monosaccharides. The stirring blade 122 can adopt any appropriate structural form. For example, one end of the stirring blade 122 is fixed on the stirring shaft 121, and the other end extends outward along the radial direction of the stirring shaft 121 and is close to and spaced apart from the inner wall of the slurry tank 100; furthermore, the stirring blade 122 can be provided in multiple layers, and the multiple layers of stirring blades 122 are spaced apart along the axial length direction of the stirring shaft 121.

[0034] In this invention, the power unit 130 can be selected in any suitable form. For example, the power unit 130 includes a reducer and a drive motor. The stirring shaft 121 is connected to the power output end of the reducer. The drive motor is used to drive the stirring shaft 121 to rotate around its own axis through the reducer, thereby stirring the materials in the mixing chamber 110 by stirring blades 122 fixed on the stirring shaft 121, ensuring that the saccharification reaction proceeds efficiently.

[0035] In this invention, the transmission mechanism 300 can adopt any suitable structural form, as long as it can achieve power transmission. In some embodiments of this invention, combined with... Figure 2 As shown, the transmission mechanism 300 includes a drive sprocket 310, a driven sprocket 320, and a chain 330. The drive sprocket 310 is coaxially connected to the stirring shaft 121, the driven sprocket 320 is coaxially connected to the rotating rod 211, and the chain 330 is wound between the drive sprocket 310 and the driven sprocket 320 for transmitting power.

[0036] It is understood that, in this invention, to ensure the efficiency of the saccharification process, the starchy raw material should be crushed to a finer particle size in the crushing cylinder 200. Therefore, in conjunction with... Figure 3 As shown, a screen plate 220 is provided inside the crushing cylinder 200. The screen plate 220 is used to divide the cylinder cavity of the crushing cylinder 200 into a first cavity 230 located in the upper layer and a second cavity 240 located in the lower layer. The crushing mechanism 210 is located in the first cavity 230. The second cavity 240 is connected to the feed inlet 101 of the slurry tank 100 through the discharge end 202. The screen plate 220 is provided with screen holes 221 for connecting the first cavity 230 and the second cavity 240. The screen plate 220 is configured to be able to reciprocate in the vertical direction.

[0037] With the above configuration, the starchy raw material is fed into the first chamber 230 through the feeding port 201, and then crushed to a finer particle size by the crushing mechanism 210 before falling into the second chamber 240 through the screen hole 221. Then, it falls into the mixing chamber 110 of the powder slurry tank 100 through the discharge end 202 of the crushing cylinder 200. By setting the screen plate 220 to be able to reciprocate in the vertical direction, the crushed starchy raw material is prevented from clogging the screen hole 221.

[0038] In this invention, the sieve plate 220 can adopt any suitable structural form to achieve reciprocating vibration in the vertical direction. In some embodiments of this invention, combined with... Figure 3 As shown, a fixing ring 222 is provided at the center of the sieve plate 220. The fixing ring 222 has a cavity extending vertically for the rotating rod 211 to pass through. At least one slope 2221 is formed at the end of the fixing ring 222 away from the sieve plate 220. The slope 2221 extends circumferentially away from the sieve plate 220. A pushing rod 2111 is provided on the rotating rod 211. The pushing rod 2111 is configured to cooperate with the slope 2221 when the rotating rod 211 rotates, pushing the sieve plate 220 to move vertically. In a specific embodiment of the present invention, as shown... Figure 3 As shown, the end of the fixed ring 222 away from the screen plate 220 forms two slopes 2221. Two pushing rods 2111 are correspondingly provided on the rotating rod 211. The two pushing rods 2111 cooperate with the two slopes 2221. During the rotation of the rotating rod 211, the pushing rods 2111 squeeze the slopes 2221, thereby pushing the screen plate 220 connected to the fixed ring 222 to move upward. When the pushing rods 2111 transition from the farthest point of the slopes 2221 to the closest point, the screen plate 220 moves downward under its own weight. This cycle repeats, realizing the reciprocating movement of the screen plate 220 in the vertical direction.

[0039] Furthermore, in this invention, to ensure the stability of the sieve plate 220 during vibration, such as... Figure 4 As shown, the edge of the screen plate 220 is provided with a plurality of sliders 223, and the plurality of sliders 223 are arranged at intervals along the circumference of the screen plate 220. The inner wall of the crushing cylinder 200 is provided with a plurality of limiting grooves 250 extending in the vertical direction. The plurality of sliders 223 are respectively housed in the plurality of limiting grooves 250 and can reciprocate along the direction defined by the limiting grooves 250.

[0040] Furthermore, a return spring 224 is provided at the bottom of the slider 223, and the bottom end of the return spring 224 is fixedly connected to the bottom of the limiting groove 250. With the return spring 224, when the sieve plate 220 moves upward to its highest point, the return spring 224 can provide elastic force to drive it downward, ensuring that the sieve plate 220 reliably reciprocates in the vertical direction.

[0041] The present invention also provides a fermentation alcohol production apparatus, which includes a fermentation tank 500 and the above-mentioned starch raw material processing device. The discharge port 102 of the slurry tank 100 is connected to the liquid inlet 510 of the fermentation tank 500 for conveying the saccharified raw material in the slurry tank 100 to the fermentation tank 500.

[0042] In the technical solution provided by the present invention, the production device including the above-mentioned starch raw material processing device greatly saves the transfer time of the crushed starch raw material, avoids the waste of starch raw material, and ensures the efficiency of alcohol production based on starch raw material fermentation.

[0043] It should be noted that in this invention, the time required for sugar fermentation to form alcohol is generally longer than the time required for saccharification. To fully utilize the equipment, in some embodiments of this invention, multiple fermentation tanks 500 are provided, and multiple discharge ports 102 are provided for the slurry tank 100. Each discharge port 102 is equipped with a valve, and the multiple discharge ports 102 correspond one-to-one with the multiple liquid inlets 510 of the fermentation tanks 500.

[0044] Thus, the starch raw material processing device provided by the present invention can process a batch of sugar solution, which can then be transferred to one of the fermentation tanks 500 for subsequent fermentation processes. Exemplarily, in a specific embodiment of the present invention, combined with... Figure 5 As shown, there are eight fermentation tanks 500, which are arranged circumferentially around the starch raw material processing device provided by the present invention.

[0045] The present invention also provides a method for producing fermented alcohol, the method comprising the steps of saccharifying a crushed starchy raw material and fermenting the sugar solution formed by the saccharification process to obtain alcohol; wherein the crushing and saccharification processes of the starchy raw material are carried out in the aforementioned starchy raw material processing apparatus.

[0046] In some embodiments, the fermentation alcohol production method further includes feeding amylase together with the starchy raw material to be crushed into the crushing cylinder 200.

[0047] It should be noted that the conventional process for producing fuel alcohol from starchy raw materials involves first crushing the starchy raw materials, then, in the saccharification process, adding amylase to convert the crushed starchy raw materials into fermentable monosaccharides (such as glucose), and finally using yeast to ferment the monosaccharides to form ethanol. In the technical solution provided by this invention, amylase and the starchy raw materials to be crushed are fed together into the crushing cylinder 200. While crushing the starchy raw materials, the amylase and the crushed starchy raw materials are mixed. Combined with the temperature generated by the crushing mechanism 210, a certain degree of saccharification is achieved in the crushing cylinder 200. The inventors of this application have found that the above-mentioned method steps provided by this invention significantly improve the degradation efficiency of starch, thereby effectively avoiding a series of problems such as reduced fermentation efficiency, the generation of by-products, and decreased product quality due to the accumulation of high viscosity in the fermentation broth.

[0048] The following uses corn as an example to specifically illustrate the process of producing alcohol through fermentation using the production device provided by this invention.

[0049] First, add amylase (at a rate of 0.20 kg / t of material) to the soaked corn, and then put it into the crushing cylinder 200. The crushing mechanism 210 of the crushing cylinder 200 is used for crushing. After crushing, the corn particles are screened by the vibration of the screen plate 220 and fall directly into the mixing chamber 110 of the slurry tank 100. Control the process temperature of the slurry treatment. Specifically, first raise the temperature of the slurry tank 100 to 60°C and pre-treat for 0.5 hours; then continue to raise the temperature to 86°C and hold for 1 hour; then raise the temperature to 93°C and hold for 1 hour.

[0050] The liquefied material is fed into fermenter 500, cooled to 35°C, and its pH value is adjusted to 4.0-4.5 using an acidic reagent. Saccharifying enzyme (0.40 kg / t of material) and active dry yeast (0.50 kg / t of material) are added, along with an appropriate amount of nitrogen source. The fermentation process is carried out according to standard procedures. After fermentation, the final alcohol content, total acid content, and total sugar content are measured.

[0051] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A processing device for starchy raw materials, characterized in that, The device includes a slurry tank (100) and a crushing cylinder (200). The slurry tank (100) has a mixing chamber (110) and an inlet (101) and an outlet (102) respectively connected to the mixing chamber (110). The crushing cylinder (200) is located at the upper end of the slurry tank (100). The crushing cylinder (200) is provided with a feeding port (201). The crushing cylinder (200) is provided with a crushing mechanism (210) for crushing starchy raw materials. The lower end of the crushing cylinder (200) is formed as an outlet end (202) and is connected to the inlet (101) of the slurry tank (100) so that the crushed starchy raw materials can fall into the mixing chamber (110) of the slurry tank (100).

2. The apparatus for processing starchy raw materials according to claim 1, characterized in that, The slurry tank (100) is provided with a stirring mechanism (120) for stirring and mixing the materials in the mixing chamber (110). A transmission mechanism (300) and a clutch (400) are provided between the stirring mechanism (120) and the crushing mechanism (210). The crushing mechanism (210) is connected to the output end of the clutch (400). The stirring mechanism (120) is connected to the input end of the clutch (400) through the transmission mechanism (300).

3. The apparatus for processing starchy raw materials according to claim 2, characterized in that, The stirring mechanism (120) includes a stirring shaft (121) and stirring blades (122) fixed on the stirring shaft (121). A power unit (130) is provided at the upper end of the slurry tank (100) to drive the stirring shaft (121) to rotate around its own axis. The crushing mechanism (210) includes a rotating rod (211) and a crushing blade holder (212). The rotating rod (211) is rotatably disposed at the upper end of the crushing cylinder (200) and extends vertically into the cylinder cavity of the crushing cylinder (200). The crushing blade holder (212) is disposed on the rod of the rotating rod (211) located in the cylinder cavity of the crushing cylinder (200). The rotating rod (211) is coaxially connected to the output end of the clutch (400). The stirring shaft (121) is connected to the input end of the clutch (400) through the transmission mechanism (300).

4. The apparatus for processing starchy raw materials according to claim 3, characterized in that, The transmission mechanism (300) includes a drive sprocket (310), a driven sprocket (320), and a chain (330). The drive sprocket (310) is coaxially connected to the stirring shaft (121), the driven sprocket (320) is coaxially connected to the rotating rod (211), and the chain (330) is wound between the drive sprocket (310) and the driven sprocket (320) to transmit power.

5. The apparatus for processing starchy raw materials according to claim 3 or 4, characterized in that, The crushing cylinder (200) is provided with a screen plate (220), which is used to divide the cylinder cavity of the crushing cylinder (200) into a first cavity (230) located in the upper layer and a second cavity (240) located in the lower layer. The crushing mechanism (210) is located in the first cavity (230). The second cavity (240) is connected to the feed port (101) of the slurry tank (100) through the discharge end (202). The screen plate (220) is provided with screen holes (221) for connecting the first cavity (230) and the second cavity (240). The screen plate (220) is configured to be able to reciprocate in the vertical direction.

6. The apparatus for processing starchy raw materials according to claim 5, characterized in that, A fixing ring (222) is provided at the center of the sieve plate (220). The fixing ring (222) has a cavity extending in the vertical direction for the rotating rod (211) to pass through. At least one slope (2221) is formed at the end of the fixing ring (222) away from the sieve plate (220). The slope (2221) extends in the circumferential direction of the fixing ring (222) away from the sieve plate (220). A pushing rod (2111) is provided on the rotating rod (211). The pushing rod (2111) is configured to cooperate with the slope (2221) when the rotating rod (211) rotates, pushing the sieve plate (220) to move in the vertical direction. Preferably, the edge of the screen plate (220) is provided with a plurality of sliders (223), the plurality of sliders (223) are arranged at intervals along the circumference of the screen plate (220), the inner wall of the crushing cylinder (200) is provided with a plurality of limiting grooves (250) extending in the vertical direction, the plurality of sliders (223) are respectively housed in the plurality of limiting grooves (250) and can reciprocate along the direction defined by the limiting grooves (250); Preferably, a reset spring (224) is provided at the bottom of the slider (223), and the bottom end of the reset spring (224) is fixedly connected to the bottom of the limiting groove (250).

7. A fermentation alcohol production apparatus, characterized in that, The apparatus includes a fermentation tank (500) and a starch raw material processing device according to any one of claims 1-6, wherein the outlet (102) of the slurry tank (100) is connected to the inlet (510) of the fermentation tank (500) for conveying the saccharified raw material in the slurry tank (100) to the fermentation tank (500).

8. The fermentation alcohol production apparatus according to claim 7, characterized in that, Multiple fermentation tanks (500) are provided, and multiple discharge ports (102) are provided for each slurry tank (100). Each discharge port (102) is equipped with a valve, and the multiple discharge ports (102) correspond one-to-one with the liquid inlets (510) of the multiple fermentation tanks (500).

9. A method for producing alcohol through fermentation, characterized in that, This includes the steps of saccharifying the crushed starchy raw materials and fermenting the sugar solution formed by saccharification to obtain alcohol; The crushing and saccharification of starchy raw materials are carried out in the starchy raw material processing apparatus according to any one of claims 1-6.

10. The method for producing fermented alcohol according to claim 9, characterized in that, The fermented alcohol production method further includes feeding amylase and starchy raw materials to be crushed into the crushing cylinder (200).

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