Fermentation device for molasses alcohol fermentation mature mash discharging

Abstract

The utility model provides a fermentation device for molasses alcohol fermentation mature mash discharging, which is characterized in that a mature mash tank receives materials from a mature mash inlet formed in the upper end part of the side wall of a tank body, and the materials can be discharged to a mud removal unit from a mature mash outlet formed in the bottom of the tank body for mud removal; clear liquid obtained after mud removal is received from a clear liquid inlet formed in the top of the tank body, the clear liquid can be discharged into a distillation feeding tank from a clear liquid outlet formed in the upper end of the side wall of the tank body, and then the clear liquid is pumped to a distillation device through a distillation feeding pump and a distillation feeding pipeline. According to the utility model, the current production situation that various sediments carried by mature mash generated by molasses fermentation are directly sent to a distillation device can be improved, the distillation device is prevented from generating a large amount of scales due to the sediments, and a reliable guarantee is provided for continuous and smooth production.

Description

TECHNICAL FIELD

[0001] The utility model relates to a molasses fermentation production alcohol technology, more specifically to a fermentation device for mature mash discharging of molasses alcohol fermentation. BACKGROUND

[0002] In the production process of continuous fermentation of molasses alcohol, the mature mash is generally discharged from the lower part of the mature mash tank and then pumped to the distillation device for distillation and separation of alcohol in the mature mash to produce various alcohol products. Since the mature mash liquid produced by molasses fermentation contains a large amount of sludge, colloid and various calcium salts, the mature mash directly sent to the distillation device will produce a large amount of scale in the distillation device such as various preheaters, crude distillation column, crude distillation column reboiler, etc. Scale is a poor conductor of heat, with a thermal conductivity generally only one-tenth of carbon steel and less than one-tenth of stainless steel. The presence of scale reduces the heat transfer coefficient, and sometimes even causes blockage of the crude distillation column, resulting in the need to disassemble and clean the tower. This causes frequent distillation shutdowns, forcing the continuous production to be interrupted, seriously affecting the production efficiency and making it difficult to complete the production task. SUMMARY

[0003] The utility model solves the above technical problem, and therefore proposes a fermentation device for mature mash discharging of molasses alcohol fermentation, which can improve the production status of directly sending various sediments contained in the mature mash liquid produced by molasses fermentation to the distillation device, avoid a large amount of scale produced by sediments in the distillation device, and provide reliable protection for the continuous and smooth production.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A fermentation device for mature mash discharging of molasses alcohol fermentation, comprising:

[0006] A mature mash tank receives materials through a mature mash inlet formed in the upper end of the side wall of the tank body, and the materials can be discharged to a desilting unit through a mature mash outlet formed in the bottom of the tank body, and the clear liquid obtained after the materials are desilted is received through a clear liquid inlet formed in the top of the tank body, and the clear liquid is discharged through a clear liquid outlet formed in the upper end of the side wall of the tank body as a distillation liquid to be sent to the distillation process;

[0007] The desilting unit comprises a slurry pump, a desilting device and a clear liquid pump connected in sequence along the conveying direction through pipelines, and is connected between the mature mash outlet and the clear liquid inlet of the mature mash tank. The materials discharged from the mature mash outlet of the mature mash tank are pumped to the desilting device through the slurry pump for desilting, and the clear liquid after desilting is pumped through the clear liquid pump and returned to the mature mash tank through the clear liquid inlet;

[0008] The distillation feed tank, which is provided with a liquid inlet at the top of the tank body, receives the clear liquid discharged from the matured mash tank through the clear liquid outlet and discharged from the clear liquid outlet of the tank body, temporarily stores the clear liquid in the tank as the liquid to be distilled, and discharges the liquid to be distilled from the liquid outlet of the tank body and pumps the liquid to be distilled to the distillation device through the distillation feed pump and the distillation feed pipeline.

[0009] The structure of the utility model also has the characteristics that:

[0010] Further comprising a detection unit; the detection unit comprises a liquid level sensor arranged on the matured mash tank, and further comprises a liquid level sensor for the liquid to be distilled arranged on the distillation feed tank; the liquid level in the matured mash tank is detected by the liquid level sensor arranged on the matured mash tank, which is used for controlling the opening / closing of the mud removal unit and the opening / closing of the clear liquid discharge valve; the liquid level of the liquid to be distilled in the distillation feed tank is detected by the liquid level sensor for the liquid to be distilled, which is used for controlling the opening / closing of the distillation feed pump.

[0011] The liquid inlet is higher than the clear liquid outlet, and the clear liquid outlet is higher than the matured mash inlet along the height direction of the tank body on the matured mash tank; the height position of the liquid inlet for the liquid to be distilled arranged on the top of the distillation feed tank is lower than the clear liquid outlet.

[0012] The matured mash inlet and the clear liquid outlet are arranged on the two sides of the tank body on the matured mash tank.

[0013] The pipeline in the mud removal unit comprises a mud discharge pipeline from the matured mash outlet of the matured mash tank to the inlet of the mud removal device through the mud pump, and further comprises a clear liquid pipeline from the outlet of the mud removal device to the clear liquid inlet of the matured mash tank through the clear liquid pump.

[0014] The mud removal device is a compartment type automatic filter press or a horizontal screw discharge sedimentation centrifuge or a sedimentation device.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model makes the matured mash precipitate in the matured mash tank, discharges from the bottom of the tank body, and then sends the clear liquid obtained by removing the mud back to the matured mash tank, and then pumps the clear liquid from the upper part of the tank body to the distillation feed tank and then to the distillation device, thereby significantly improving the production status that the various sediments in the matured mash liquid produced by the fermentation of molasses are directly sent to the distillation device, reducing the problem of sludge and scaling caused by sending the matured mash to the distillation device and subsequent production devices, and ensuring the stable operation of the production device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the fermentation device of the utility model.

[0018] In the drawing:

[0019] 1 mature mash tank; 11 mature mash inlet; 12 mature mash outlet; 13 clear liquid inlet; 14 clear liquid outlet;

[0020] 21 slurry pump; 22 slurry removal device; 23 clear liquid pump; 24 slurry removal pipeline; 25 clear liquid pipeline;

[0021] 3 distillation feed tank; 31 distillation liquid inlet; 32 clear liquid discharge pipeline; 33 clear liquid discharge valve; 34 distillation liquid outlet; 35 distillation feed pipeline; 36 distillation feed pump;

[0022] 4 distillation device. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are some embodiments but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0024] Please refer to Figure 1 The fermentation device for molasses alcohol fermentation mature mash discharge in the embodiments comprises:

[0025] The mature mash tank 1 receives materials from the mature mash inlet 11 formed in the upper end of the side wall of the tank body, and the materials can be discharged to the slurry removal unit from the mature mash outlet 12 formed in the bottom of the tank body. The clear liquid obtained after the materials are removed by the slurry removal unit is received by the clear liquid inlet 13 formed in the top of the tank body, and the clear liquid is discharged from the clear liquid outlet 14 formed in the upper end of the side wall of the tank body as distillation liquid to be sent to the distillation process.

[0026] The slurry removal unit comprises a slurry pump 21, a slurry removal device 22 and a clear liquid pump 23 connected in sequence along the conveying direction by pipelines, and is connected between the mature mash outlet 12 and the clear liquid inlet 13 of the mature mash tank 1. The materials discharged from the mature mash outlet 12 of the mature mash tank 1 are pumped to the slurry removal device 22 by the slurry pump 21 for slurry removal, and the clear liquid after slurry removal is pumped by the clear liquid pump 23 and returned to the mature mash tank 1 from the clear liquid inlet 13.

[0027] The distillation feed tank 3 receives the clear liquid discharged from the clear liquid outlet 14 of the mature mash tank 1 through the clear liquid discharge pipeline 32 with the clear liquid discharge valve 33 formed in the top of the tank body, temporarily stores the clear liquid in the tank as distillation liquid to be sent to the distillation device 4 through the distillation feed pump 36 and the distillation feed pipeline 35.

[0028] In the specific implementation, the corresponding structure of the fermentation device further comprises:

[0029] The detection unit comprises a liquid level sensor arranged on the matured mash tank 1, and a liquid level sensor arranged on the distillation feed tank 3. The liquid level in the matured mash tank 1 is detected by the liquid level sensor arranged on the matured mash tank 1, which is used for controlling the opening and closing of the mud removal unit and the opening and closing of the clear liquid discharge valve 33. The liquid level of the liquid to be distilled in the distillation feed tank 3 is detected by the liquid level sensor arranged on the distillation feed tank 3, which is used for controlling the opening and closing of the distillation feed pump 36. Each sensor and each device is connected to and controlled by an automatic control system.

[0030] The clear liquid inlet 13 is higher than the clear liquid outlet 14, and the clear liquid outlet 14 is higher than the matured mash inlet along the height direction of the tank body of the matured mash tank 1. The height position of the liquid inlet 31 of the distillation feed tank 3 is lower than the clear liquid outlet 14.

[0031] The matured mash inlet 11 and the clear liquid outlet 14 are arranged on the two sides of the tank body of the matured mash tank 1.

[0032] The pipeline in the mud removal unit comprises a mud discharge pipeline 24 from the matured mash outlet 12 of the matured mash tank 1 to the inlet of the mud removal device 22 through the mud pump 21, and a clear liquid pipeline 25 from the outlet of the mud removal device 22 to the clear liquid inlet 13 of the matured mash tank 1 through the clear liquid pump 23.

[0033] The mud removal device 22 is any one of a chamber type automatic filter press, a horizontal screw discharge sedimentation centrifuge, a precipitator, or any other device capable of separating sludge from liquid.

[0034] The embodiment also provides a fermentation method for discharging the matured mash of molasses alcohol fermentation, which is implemented by using the fermentation device for discharging the matured mash of molasses alcohol fermentation. The fermentation method is as follows: the matured mash liquid about to be fermented is sent into the matured mash tank 1 for sedimentation; when the matured mash liquid in the matured mash tank 1 reaches the upper liquid level of the matured mash liquid, the matured mash liquid in the tank is discharged from the matured mash outlet 12 at the bottom of the tank body; the clear liquid is obtained by removing the mud through the mud removal unit; the clear liquid is sent back to the matured mash tank 1; when the clear liquid in the matured mash tank 1 reaches the upper liquid level of the clear liquid, the clear liquid is discharged from the clear liquid outlet 14 at the upper end of the tank body to the distillation feed tank 3; the clear liquid is buffered in the distillation feed tank 3 and then pumped to the distillation device 4; and the upper liquid level of the clear liquid is higher than the upper liquid level of the matured mash liquid.

[0035] The fermentation method specifically comprises the following steps:

[0036] Step 1, that is, the matured mash after fermentation is sent into the matured mash tank 1 through the matured mash inlet 11 to precipitate, after the matured mash reaches the matured mash upper liquid level, the mud removal unit is started, the matured mash in the matured mash tank 1 is discharged from the matured mash outlet 12 at the bottom of the tank body to the mud removal device 22 through the mud pump 21, mud is removed through the mud removal device 22, and the clear liquid after mud removal is pumped to the matured mash tank 1 through the clear liquid pump 23 and flows back to the matured mash tank 1 from the clear liquid inlet 13;

[0037] Step 2, after the clear liquid in the matured mash tank 1 reaches the clear liquid upper liquid level, the clear liquid discharge valve 33 is opened, the clear liquid flows into the distillation feed tank 3 from the matured mash tank 1 through the clear liquid discharge pipeline 32 and is temporarily stored as a liquid to be distilled.

[0038] Step 3, after the liquid to be distilled in the distillation feed tank 3 reaches the liquid to be distilled upper liquid level, the distillation feed pump 36 is started, and the liquid to be distilled is pumped to the distillation device 4 through the distillation feed pipeline 35.

[0039] Embodiment 1

[0040] Step 1, the matured mash is continuously sent into the matured mash tank 1 which is 13 meters high through the matured mash inlet 11 which is 9 meters high, after the matured mash reaches the matured mash upper liquid level of 10 meters, the mud removal unit is started, the matured mash in the matured mash tank 1 is discharged from the matured mash outlet 12 at the bottom of the tank body to the mud removal device 22, the clear liquid after mud removal is pumped to the matured mash tank 1 through the clear liquid pump 23 and flows back to the matured mash tank 1 from the clear liquid inlet 13 at the top of the matured mash tank 1; the material height in the matured mash tank 1 continues to rise with the continuous inflow of the matured mash and the clear liquid;

[0041] Step 2, after the clear liquid in the matured mash tank 1 reaches the clear liquid upper liquid level of 11 meters, the clear liquid discharge valve 33 is opened, the clear liquid flows into the distillation feed tank 3 which is 9 meters high from the matured mash tank 1 through the clear liquid discharge pipeline 32 and is temporarily stored as a liquid to be distilled.

[0042] Step 3, after the liquid to be distilled in the distillation feed tank 3 reaches the liquid to be distilled upper liquid level of 5 meters, the distillation feed pump 36 is started, and the liquid to be distilled is pumped to the distillation device 4 through the distillation feed pipeline 35.

[0043] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fermentation device for molasses alcohol fermentation matured mash discharge, characterized in that comprising: a matured mash tank, receiving materials from a matured mash inlet arranged at an upper end of a side wall of the tank body, discharging the materials from a matured mash outlet arranged at a bottom of the tank body to a desilting unit for desilting, receiving clear liquid obtained after desilting from a clear liquid inlet arranged at a top of the tank body, discharging the clear liquid from a clear liquid outlet arranged at an upper end of the side wall of the tank body as distillation liquid to be fed into a distillation process; the desilting unit, comprising a slurry pump, a desilting device and a clear liquid pump connected in sequence along a conveying direction by pipelines, connecting between the matured mash outlet of the matured mash tank and the clear liquid inlet, pumping the materials discharged from the matured mash outlet of the matured mash tank to the desilting device for desilting by the slurry pump, pumping the clear liquid after desilting by the clear liquid pump and backflowing into the matured mash tank from the clear liquid inlet; a distillation feed tank, receiving the clear liquid discharged from the clear liquid outlet of the matured mash tank through a clear liquid discharge pipeline with a clear liquid discharge valve from a distillation liquid inlet arranged at a top of the tank body, discharging the distillation liquid through a distillation liquid outlet arranged at a bottom of the tank body and pumping the distillation liquid to a distillation device through a distillation feed pipeline by a distillation feed pump. Further comprising a detection unit; the detection unit comprises a liquid level sensor arranged on the matured mash tank, and a distillation liquid liquid level sensor arranged on the distillation feed tank; the liquid level in the matured mash tank is detected by the liquid level sensor arranged on the matured mash tank, which is used for controlling the opening / closing of the desilting unit and the opening / closing of the clear liquid discharge valve, and the distillation liquid liquid level in the distillation feed tank is detected by the distillation liquid liquid level sensor, which is used for controlling the opening / closing of the distillation feed pump. Along the height direction of the tank body of the matured mash tank, the clear liquid inlet is higher than the clear liquid outlet, and the clear liquid outlet is higher than the matured mash inlet; the height position of the distillation liquid inlet arranged at the top of the distillation feed tank is lower than the clear liquid outlet. The matured mash inlet and the clear liquid outlet are arranged at two sides of the tank body of the matured mash tank.

2. A fermentation apparatus for the fermentation of molasses alcohol to a matured mash discharge according to claim 1 characterised in that: In the desilting unit, the pipeline comprises a slurry discharge pipeline from the matured mash outlet of the matured mash tank to the inlet of the desilting device through the slurry pump, and a clear liquid pipeline from the outlet of the desilting device to the clear liquid inlet of the matured mash tank through the clear liquid pump.

3. A fermentation apparatus for the fermentation of molasses alcohol to a matured mash discharge as claimed in claim 1, wherein: The desilting device is a chamber type automatic filter press or a horizontal spiral discharge sedimentation centrifuge or a sedimentation device.

4. The fermentation apparatus for molasses alcohol fermentation mash discharge according to claim 1, characterized in that: ​ 5. The fermentation apparatus for molasses alcohol fermentation mash discharge according to claim 1, characterized in that: ​ 6. A fermentation apparatus for the fermentation of molasses alcohol to a matured mash discharge according to claim 1 or 5, characterized in that: ​

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