Device for eliminating foam generated by continuous fermentation of molasses alcohol

Abstract

The utility model provides a device for eliminating foam generated by continuous fermentation of molasses alcohol, which is characterized in that a No.1 feed port and a No.1 carbon dioxide discharge port of a No.1 fermentation tank are respectively arranged on two sides of the top, and a No.1 discharge port is arranged at the bottom of a tank body; a No.2 feed port and a No.2 carbon dioxide discharge port of the No.2 fermentation tank are respectively arranged on two sides of the top, a No.2 carbon dioxide discharge port is arranged in the middle of the top of the tank body, a No.2 discharge port is arranged at the bottom, and a No.2 incoming material discharge port is arranged at the upper end of the side wall; the No.1 carbon dioxide discharge port is communicated with the No.2 carbon dioxide discharge port through a carbon dioxide pipeline, and the No.1 discharge port is communicated with the No.2 incoming material discharge port through a material passing pipeline; a fermentation foam eliminating device is arranged in the second fermentation tank and is used for eliminating carbon dioxide and fermentation foam generated by the first fermentation tank and the second fermentation tank. According to the utility model, foams generated by fermentation of the No.1 fermentation tank and the No.2 fermentation tank are eliminated in time, and meanwhile, the equipment investment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to molasses fermentation technical field more specifically, it is a kind of device for eliminating the foam generated in molasses alcohol continuous fermentation. BACKGROUND

[0002] In the production process of molasses alcohol continuous fermentation, No.1 fermenter and No.2 fermenter both flow molasses, and No.3 and subsequent fermenters do not flow molasses. The material of No.3 fermenter comes from No.2 fermenter and flows to a certain liquid level and then flows by itself, the material of No.4 fermenter comes from No.3 fermenter and flows to a certain liquid level and then flows by itself, and so on. Therefore, fermentation mainly occurs in No.1 fermenter and No.2 fermenter, and the most foam is generated.

[0003] In order to prevent the foam from being discharged from the fermenter with carbon dioxide gas generated during fermentation, damaging the production equipment of subsequent processes or polluting the environment, at present, a fermentation foam elimination device is arranged at the top of No.1 fermenter and No.2 fermenter to ensure normal production, but this method has relatively high equipment investment. SUMMARY

[0004] To solve the above technical problems, the utility model provides a kind of device for eliminating the foam generated in molasses alcohol continuous fermentation, which is used in the production process of molasses alcohol continuous fermentation, can realize the timely elimination of the foam generated in the fermentation of No.1 fermenter and No.2 fermenter, and simultaneously reduces equipment investment and material and energy consumption.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A kind of device for eliminating the foam generated in molasses alcohol continuous fermentation, which is applied to the production process of molasses alcohol continuous fermentation, is used to eliminate the foam generated in the fermentation of No.1 fermenter and No.2 fermenter, No.1 fermenter and No.2 fermenter flow molasses respectively, and has the following structural characteristics:

[0007] No.1 feeding port for flowing molasses of No.1 fermenter and No.2 carbon dioxide discharge port for discharging carbon dioxide are arranged on both sides of the top of tank body, and No.1 discharge port is arranged at the bottom of tank body; No.2 feeding port for flowing molasses of No.2 fermenter and No.2 carbon dioxide inlet port for receiving carbon dioxide discharged from No.1 fermenter are arranged on both sides of the top of tank body, No.2 carbon dioxide discharge port for discharging carbon dioxide is arranged at the center of the top of tank body, No.2 discharge port is arranged at the bottom of tank body, and No.2 material inlet port for receiving molasses discharged from No.1 fermenter is arranged at the upper end of the side wall of tank body; No.1 carbon dioxide discharge port and No.2 carbon dioxide inlet port are connected by carbon dioxide pipeline, and No.1 discharge port and No.2 material inlet port are connected by material pipeline.

[0008] The fermentation foam eliminating device is arranged in the No. 2 fermentation tank, and is higher than the No. 2 carbon dioxide discharge port and the No. 2 feed inlet along the height direction of the tank body, is higher than the No. 2 incoming material discharge port and is lower than the No. 2 carbon dioxide discharge outlet, and the carbon dioxide and the fermentation foam generated from the No. 1 fermentation tank and the No. 2 fermentation tank are eliminated by the fermentation foam eliminating device, and the carbon dioxide after elimination of foam is discharged out of the No. 2 fermentation tank through the No. 2 carbon dioxide discharge outlet.

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

[0010] The molasses in the No. 1 fermentation tank is self-flowed into the No. 2 fermentation tank through the feed pipe from the No. 1 discharge port.

[0011] The No. 1 upper liquid level sensor is arranged on the No. 1 fermentation tank, and the No. 2 upper liquid level sensor is arranged on the No. 2 fermentation tank, and is used for detecting the upper liquid level of the material in the corresponding tank.

[0012] The fermentation foam eliminating device is connected with a plurality of nozzles through a defoaming agent pipeline, each nozzle is arranged in the tank, is distributed at equal intervals around the central axis of the tank body, and the spraying direction is downward, and the defoaming agent pipeline is used for receiving the defoaming agent sent from outside.

[0013] The tank body of the No. 1 fermentation tank and the No. 2 fermentation tank can be divided into three parts, and sequentially includes a top cone, a middle cylinder and a bottom cone along the height direction of the tank body, the top cone is pointed upward, the bottom cone is pointed downward, and the inner diameters of the bottom surface of the cone and the middle cylinder are the same.

[0014] Compared with the prior art, the utility model has the beneficial effects of:

[0015] The carbon dioxide and the fermentation foam generated in the No. 1 fermentation tank are discharged from the top, are introduced into the No. 2 fermentation tank from the top of the No. 2 fermentation tank, the fermentation foam eliminating device is arranged at the top of the No. 2 fermentation tank, the fermentation foam generated in the No. 1 fermentation tank and the No. 2 fermentation tank is eliminated at the top of the No. 2 fermentation tank, the process equipment is simple, and the production demand of saving equipment investment and reducing material and energy consumption is met. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of the utility model.

[0017] In the drawing:

[0018] 1, No. 1 fermentation tank; 11, No. 1 feed inlet; 12, No. 1 carbon dioxide discharge outlet; 121, carbon dioxide pipeline; 13, No. 1 discharge port; 131, feed pipe;

[0019] 2, No. 2 fermenter; 21, No. 2 feeding port; 22, No. 2 carbon dioxide discharge inlet; 23, No. 2 carbon dioxide discharge outlet; 24, No. 2 discharge port; 25, No. 2 incoming material discharge inlet; 26, fermentation foam eliminating device. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] Please refer to Figure 1 The device for eliminating the foam generated in the continuous fermentation of molasses alcohol of the present embodiment is applied in the production process of the continuous fermentation of molasses alcohol, and is used for eliminating the foam generated in the fermentation of No. 1 fermenter 1 and No. 2 fermenter 2. No. 1 fermenter 1 and No. 2 fermenter 2 respectively add molasses, and the structure of the device is set as follows:

[0022] No. 1 feeding port 11 of No. 1 fermenter 1 for adding molasses and No. 1 carbon dioxide discharge outlet 12 for discharging carbon dioxide are respectively arranged on both sides of the top of the tank body, and No. 1 discharge port 13 is arranged at the bottom of the tank body. No. 2 feeding port 21 of No. 2 fermenter 2 for adding molasses and No. 2 carbon dioxide discharge inlet 22 for receiving the discharged carbon dioxide from No. 1 fermenter 1 are respectively arranged on both sides of the top of the tank body, No. 2 carbon dioxide discharge outlet 23 for discharging carbon dioxide is arranged at the center of the top of the tank body, No. 2 discharge port 24 is arranged at the bottom of the tank body, and No. 2 incoming material discharge inlet 25 for receiving the discharged molasses from No. 1 fermenter 1 is arranged at the upper end of the side wall of the tank body. No. 1 carbon dioxide discharge outlet 12 and No. 2 carbon dioxide discharge inlet 22 are connected through carbon dioxide pipeline 121, and No. 1 discharge port 13 and No. 2 incoming material discharge inlet 25 are connected through material pipeline 131.

[0023] No. 2 fermenter 2 is provided with fermentation foam eliminating device 26 in the tank body. Along the height direction of the tank body, fermentation foam eliminating device 26 is arranged close to and higher than No. 2 carbon dioxide discharge inlet 22 and No. 2 feeding port 21, all of which are higher than No. 2 incoming material discharge inlet 25 and lower than No. 2 carbon dioxide discharge outlet 23. The carbon dioxide and fermentation foam generated from No. 1 fermenter 1 and No. 2 fermenter 2 are all eliminated by fermentation foam eliminating device 26, and the carbon dioxide after eliminating foam is discharged out of No. 2 fermenter 2 through No. 2 carbon dioxide discharge outlet 23.

[0024] In the specific implementation, the corresponding structure of the device also includes:

[0025] The molasses in the No. 1 fermenter 1 flows into the No. 2 fermenter 2 through the overflow pipe 131 from the No. 1 discharge port 13. The overflow pipe 131 is provided with a closable normally open valve. The molasses is first added to the No. 1 fermenter 1. When the liquid level in the No. 1 fermenter 1 is higher than that in the No. 2 fermenter 2, the molasses in the No. 1 fermenter 1 flows into the No. 2 fermenter 2.

[0026] The No. 1 fermenter 1 is provided with a No. 1 upper liquid level sensor, and the No. 2 fermenter 2 is provided with a No. 2 upper liquid level sensor. The two sensors are used to detect the upper liquid level of the materials in the corresponding fermenter, and can be used to control the discharge.

[0027] The fermentation foam elimination device 26 is a plurality of nozzles connected by a defoaming agent pipe. Each nozzle is arranged in the fermenter and is equidistantly spaced around the central axis of the fermenter. The spraying direction is downward, and the defoaming agent pipe is used to receive the defoaming agent sent from outside.

[0028] More specifically, the nozzles are provided with three. The external defoaming agent is pumped into the defoaming agent pipe.

[0029] The fermenter bodies of the No. 1 fermenter 1 and the No. 2 fermenter 2 can be divided into three parts, including a top cone, a middle cylinder and a bottom cone in sequence along the height direction of the fermenter body. The top cone has a tip pointing upward, and the bottom cone has a tip pointing downward. The inner diameters of the bottom surface of the cone and the middle cylinder are the same.

[0030] When the device is applied to the production process of continuous fermentation of molasses alcohol, the working process can be referred to as follows:

[0031] Step 1, the molasses is added to the No. 1 fermenter 1 through the No. 1 feed port 11. When the upper liquid level of the No. 1 fermenter 1 is reached, the materials in the No. 1 fermenter 1 flow into the No. 2 fermenter 2 through the overflow pipe 131 from the No. 2 feed inlet 25, and the molasses is added to the No. 2 fermenter 2 through the No. 2 feed port 21.

[0032] Step 2, after the molasses enters the No. 1 fermenter 1 and the No. 2 fermenter 2, carbon dioxide and fermentation foam are generated. The carbon dioxide and fermentation foam generated in the No. 1 fermenter 1 flow into the No. 2 fermenter 2 through the carbon dioxide pipe 121 from the No. 2 carbon dioxide discharge port 22. Together with the carbon dioxide and fermentation foam generated in the No. 2 fermenter 2, the carbon dioxide and fermentation foam pass through the fermentation foam elimination device 26 at the top of the No. 2 fermenter 2 to eliminate the foam. After the foam is eliminated, the carbon dioxide is discharged from the No. 2 carbon dioxide discharge port 23.

[0033] Step 3, when the upper liquid level of the No. 2 fermenter 2 is reached, the materials in the fermenter are discharged from the No. 2 discharge port 24 and enter the next fermenter.

[0034] Although the embodiments of the utility model have been shown and described, those of ordinary skill 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 utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A device for eliminating the foam generated by the continuous fermentation of molasses alcohol, applied to the production process of the continuous fermentation of molasses alcohol, for eliminating the foam generated by the fermentation of a No. 1 fermentation tank and a No. 2 fermentation tank, which respectively add molasses, characterized in that: the No. 1 fermentation tank has a No. 1 feed inlet for adding molasses and a No. 1 carbon dioxide discharge outlet for discharging carbon dioxide, which are respectively arranged on the top of the tank body on both sides, and the tank body has a No. 1 discharge outlet at the bottom; the No. 2 fermentation tank has a No. 2 feed inlet for adding molasses and a No. 2 carbon dioxide discharge inlet for receiving the carbon dioxide discharged from the No. 1 fermentation tank, which are respectively arranged on the top of the tank body on both sides, and the tank body has a No. 2 carbon dioxide discharge outlet for discharging carbon dioxide arranged in the middle of the top, a No. 2 discharge outlet at the bottom, and a No. 2 incoming material discharge inlet for receiving the molasses discharged from the No. 1 fermentation tank arranged on the upper end of the side wall; the No. 1 carbon dioxide discharge outlet and the No. 2 carbon dioxide discharge inlet are connected by a carbon dioxide pipeline, and the No. 1 discharge outlet and the No. 2 incoming material discharge inlet are connected by a material pipeline; the No. 2 fermentation tank has a fermentation foam elimination device arranged in the tank, which is higher than the No. 2 carbon dioxide discharge inlet and the No. 2 feed inlet, and all of them are higher than the No. 2 incoming material discharge inlet and lower than the No. 2 carbon dioxide discharge outlet along the height direction of the tank body, and the carbon dioxide and the fermentation foam generated from the No. 1 fermentation tank and the No. 2 fermentation tank are eliminated by the fermentation foam elimination device, and the carbon dioxide after eliminating the foam is discharged out of the No. 2 fermentation tank through the No. 2 carbon dioxide discharge outlet. The molasses in the No. 1 fermentation tank is self-flowed into the No. 2 fermentation tank through the material pipeline from the No. 1 discharge outlet.

2. The apparatus for eliminating the foam produced during the continuous fermentation of molasses alcohol according to claim 1, characterized in that: The No. 1 fermentation tank is provided with a No. 1 upper liquid level sensor, and the No. 2 fermentation tank is provided with a No. 2 upper liquid level sensor, which are respectively used for detecting the upper liquid level of the material in the corresponding tank.

3. The apparatus for eliminating the foam produced during the continuous fermentation of molasses alcohol according to claim 1, characterized in that: The fermentation foam elimination device is a plurality of nozzles connected by a defoaming agent pipeline, each nozzle is arranged in the tank and is distributed at equal intervals around the central axis of the tank body, and the spraying direction is downward, and the defoaming agent pipeline is used for receiving the defoaming agent sent from outside.

4. The apparatus for eliminating the foam produced during the continuous fermentation of molasses alcohol according to claim 1, characterized in that: The tank body of the No. 1 fermentation tank and the No. 2 fermentation tank can be divided into three parts, which include a top cone, a middle cylinder and a bottom cone in sequence along the height direction of the tank body, the top cone has a tip pointing upward, the bottom cone has a tip pointing downward, and the inner diameter of the bottom surface of the cone and the inner diameter of the middle cylinder are the same.

5. The apparatus for eliminating the foam produced during the continuous fermentation of molasses alcohol according to claim 1, characterized in that: ​

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