Fermentation treatment system

Abstract

The fermentation treatment system comprises a drying system, a gasification furnace, a pretreatment system and a steam boiler, the drying system is used for drying vinasse and recycling the vinasse, the vinasse treatment cost and environmental pollution are reduced, generated synthesis gas enters the steam boiler to be combusted after being filtered by the pretreatment system, and the generated synthesis gas enters the steam boiler to be combusted. The generated steam is used for a distillation process. The energy utilization efficiency is improved, the dependence on external steam is reduced, and the production cost is reduced. Compared with direct combustion of the vinasse, the process of treating the vinasse by the gasification furnace to generate the synthesis gas can remarkably reduce emission of harmful substances, and the pretreatment system further filters the synthesis gas, removes impurities in the synthesis gas and ensures that the combustion process is cleaner. The gasification conditions of the gasification furnace can be adjusted according to needs, combustible gas with different compositions and properties can be produced, and the flexibility and economical efficiency of the system are improved.

Description

Technical Field

[0001] This application relates to the field of lees gasification treatment technology, and in particular to a fermentation treatment system. Background Technology

[0002] Ethanol production via metallurgical tail gas fermentation is a technology that uses carbon monoxide as a carbon source to produce ethanol through microbial fermentation. After distillation to extract ethanol, the fermentation wastewater contains a certain amount of microbial protein, which poses a significant challenge to wastewater treatment. However, the microbial protein in the wastewater has a simple composition and high crude protein content, making it a high-value-added protein feed that can be widely used in aquaculture and livestock feeding. Microbial protein powder can replace some fishmeal in the feed industry, thereby reducing reliance on high-grade protein feeds for marine fish, which has significant environmental and economic implications.

[0003] The existing industrial waste gas fermentation process for producing anhydrous ethanol and Clostridium ethanolis protein includes steps such as gas pretreatment, microbial fermentation, distillation and dehydration, centrifugal drying, waste gas treatment, and wastewater treatment. Among these, the ethanol distillation and dehydration and protein centrifugal drying processes require large amounts of steam. However, the unstable upstream steam input limits the normal production of ethanol distillation and dehydration and protein centrifugal drying, leading to a decrease in the alcohol content of anhydrous ethanol and severe powder buildup on the protein drying equipment. Utility Model Content

[0004] In view of the deficiencies in the prior art, this application provides a fermentation treatment system to solve the problem that the single steam supply in the prior art affects the continuity of the process.

[0005] The above-mentioned objectives of this application are mainly achieved through the following technical solutions:

[0006] A fermentation treatment system, the fermentation treatment system comprising:

[0007] Drying system, the drying system being used for drying distiller's grains;

[0008] A gasifier connected to the drying system and used to process the distillers grains and generate syngas, the gasifier having a first outlet for discharging the syngas;

[0009] A pretreatment system, connected to the first outlet on the gasifier, is used to filter the syngas;

[0010] A steam boiler is connected to the pretreatment system and is used to burn the synthesis gas discharged from the pretreatment system. The steam boiler is provided with a second outlet and a third outlet. The second outlet is used to discharge combustion exhaust gas, and the third outlet is used to output steam to the distillation process.

[0011] In an optional embodiment, the fermentation treatment system further includes a gas distribution cylinder connected to the steam boiler, the gas distribution cylinder having a first inlet connected to the third outlet.

[0012] In an optional embodiment, the gas distribution cylinder is further provided with a second inlet for introducing steam.

[0013] In an optional embodiment, the gas distribution cylinder is provided with a first outlet for drying protein powder and a second outlet for ethanol distillation.

[0014] In an optional embodiment, the second outlet is provided with a flue gas purification system for purifying the combustion exhaust gas.

[0015] In an optional embodiment, the flue gas purification system includes a spray drying absorption tower and / or a bag filter.

[0016] In an optional embodiment, the drying system includes a screw extruder, a drum dryer, and a conveyor, and the drying system also includes a discharge pipe for discharging wastewater.

[0017] In an optional embodiment, the gasifier is equipped with a booster fan to drive the syngas out in a directional manner.

[0018] In an optional embodiment, the gasifier is provided with a branch pipe at one end connected to the first outlet, and the other end of the branch pipe is used to connect to the fermentation system.

[0019] In an optional embodiment, a gas pretreatment area breeding purification skid is provided on the end of the branch pipe away from the gasifier.

[0020] Compared with the prior art, the advantages of this application are:

[0021] The fermentation treatment system of this application includes a drying system, a gasifier, a pretreatment system, and a steam boiler. The drying system is used to dry the distiller's grains. The gasifier is connected to the drying system and is used to process the distiller's grains and generate syngas. The gasifier has a first outlet for discharging the syngas. The pretreatment system is connected to the first outlet on the gasifier and is used to filter the syngas. The steam boiler is connected to the pretreatment system and is used to burn the syngas discharged from the pretreatment system. The steam boiler has a second outlet and a third outlet. The second outlet is used to discharge combustion exhaust gas, and the third outlet is used to output steam to the distillation process.

[0022] The drying system dries the distiller's grains before feeding them into a gasifier, which converts the combustible components into syngas. This achieves resource utilization of the distiller's grains, transforming waste distiller's grains into valuable energy, and reducing distiller's grains treatment costs and environmental pollution. The generated syngas is filtered by a pretreatment system before entering a steam boiler for combustion, and the resulting steam is used in the distillation process. This improves energy efficiency, reduces dependence on external steam, and lowers production costs. Compared to direct combustion of distiller's grains, the gasifier process for generating syngas from distiller's grains significantly reduces emissions of harmful substances such as carbon dioxide (CO2), sulfur dioxide (SO2), and particulate matter. The pretreatment system further filters the syngas to remove impurities, ensuring a cleaner combustion process. The gasifier can adjust gasification conditions as needed to produce combustible gases with different compositions and properties, improving the system's flexibility and economy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the fermentation treatment system provided in the embodiments of this application;

[0025] In the diagram: 100, Drying system; 101, Discharge pipe; 200, Gasification furnace; 300, Pretreatment system; 400, Steam boiler; 401, Flue gas purification system; 500, Gas distribution cylinder; 600, Fermentation system; 601, Breeding purification skid in the gas pretreatment area. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0027] like Figure 1 As shown, Figure 1 This is a schematic diagram of a fermentation system provided in an embodiment of this application. The fermentation system includes a drying system 100, a gasifier 200, a pretreatment system 300, and a steam boiler 400, wherein:

[0028] like Figure 1As shown, the drying system 100 is used to dry the distiller's grains. The drying system 100 removes moisture from the distiller's grains, bringing them to a level of dryness suitable for gasification. After entering the drying system 100, the moisture in the distiller's grains is evaporated by hot air or other drying media, making the distiller's grains dry and loose. The dried distiller's grains are not only easier to transport and process, but also improve gasification efficiency and reduce energy consumption during the gasification process.

[0029] The drying system 100 can be configured as a hot air circulating dryer. Its main function is to remove moisture from the distiller's grains, bringing them to a suitable dryness for gasification. The distiller's grains are fed into the dryer's inlet via a conveyor belt. Hot air is heated to a set temperature by a heater and then sent into the drying chamber by a fan. Inside the drying chamber, the distiller's grains come into full contact with the hot air, evaporating the moisture and becoming dry and loose. The dried distiller's grains are discharged through the outlet and enter the gasifier 200.

[0030] The gasifier 200 is connected to the drying system 100 and is used to process the distillers' grains and generate syngas. The gasifier 200 has a first outlet for discharging the syngas.

[0031] like Figure 1 As shown, the gasifier 200 is connected after the drying system 100. The main function of the gasifier 200 is to convert the dried distillers' grains into syngas. The gasifier 200 has a high-temperature reaction zone inside, where the distillers' grains react chemically with a gasifying agent (such as air, oxygen, or steam) under high temperature and oxygen-deficient conditions to generate syngas, whose main components are carbon monoxide and hydrogen. The gasifier 200 has a first exhaust port for discharging the generated syngas.

[0032] The gasifier 200 can be practically arranged as a fixed-bed gasifier 200. The dried distiller's grains are fed into the feed inlet of the gasifier 200 via a screw conveyor. The distiller's grains are further dried in the preheating zone of the gasifier 200 to remove residual moisture. The distiller's grains undergo a pyrolysis reaction at high temperatures (600℃-800℃), where carbon, hydrogen, and other elements in the distiller's grains react chemically with the gasifying agent (such as air, oxygen, or steam) to generate carbon monoxide and hydrogen. The generated syngas is discharged through the first outlet and enters the pretreatment system 300.

[0033] like Figure 1 As shown, the pretreatment system 300 is connected to the first outlet on the gasifier 200 and is used to filter the syngas.

[0034] The pretreatment system 300 is connected after the first outlet of the gasifier 200 to filter and purify the syngas. During the gasification process, the syngas may carry some solid particles, tar, and other impurities. The pretreatment system 300 removes these impurities through multi-stage filtration and purification devices, ensuring the purity of the syngas. The pretreated syngas is more suitable for subsequent combustion and utilization.

[0035] like Figure 1 As shown, the steam boiler 400 is connected to the pretreatment system 300 and is used to burn the synthesis gas discharged from the pretreatment system 300. The steam boiler 400 is provided with a second outlet and a third outlet. The second outlet is used to discharge combustion exhaust gas, and the third outlet is used to output steam to the distillation process.

[0036] like Figure 1 As shown, the steam boiler 400 is connected after the pretreatment system 300. Its main function is to burn the pretreated syngas to generate high-temperature and high-pressure steam. The steam boiler 400 is equipped with a second outlet and a third outlet. The second outlet is used to discharge the combustion exhaust gas, and the third outlet is used to output the generated steam to the distillation process. By burning the syngas, energy efficiency is achieved, and dependence on external energy sources is reduced.

[0037] The steam boiler 400 can be configured as a horizontal oil / gas-fired steam boiler 400. Syngas enters the combustion chamber through the burner and is burned at high temperature to generate high-temperature flue gas. The high-temperature flue gas passes through a heat exchanger, transferring heat to the water to generate high-temperature, high-pressure steam.

[0038] The drying system 100 dries the distiller's grains and then sends them to the gasifier 200, where the gasifier 200 converts the combustible components in the distiller's grains into syngas. This achieves the resource utilization of the distiller's grains and transforms waste distiller's grains into valuable energy, reducing the cost of distiller's grains treatment and environmental pollution.

[0039] like Figure 1 As shown, the generated syngas is filtered through the pretreatment system 300 before entering the steam boiler 400 for combustion. The resulting steam is used in the distillation process. This improves energy efficiency, reduces dependence on external energy sources, and lowers production costs.

[0040] The gasifier 200 processes the syngas from distiller's grains, significantly reducing emissions of harmful substances such as carbon dioxide (CO2), sulfur dioxide (SO2), and particulate matter compared to direct combustion of distiller's grains. The pretreatment system 300 further filters the syngas, removing impurities and ensuring a cleaner combustion process.

[0041] The gasifier 200 converts distiller's grains into syngas, and the steam generated from the combustion of the syngas is then used in the distillation process, reducing dependence on external steam and lowering production costs. Furthermore, the gasifier 200 can adjust the gasification conditions as needed to produce combustible gases with different compositions and properties, improving the system's flexibility and economy.

[0042] The pretreatment system 300 ensures the purity of the syngas, resulting in a more stable combustion process and higher quality steam, which helps improve the product quality of the distillation process and increase the product's market competitiveness.

[0043] The fermentation system can be equipped with control software, enabling remote control and automated operation. It monitors equipment operating status in real time, automatically adjusts process parameters, ensures efficient operation, reduces manual intervention, and improves production efficiency.

[0044] like Figure 1 As shown, in an optional embodiment, the working principle of the fermentation treatment system in this application is as follows: The fermentation treatment system includes a drying system 100, a gasifier 200, a pretreatment system 300, and a steam boiler 400. The drying system 100 is used to dry the lees. The gasifier 200 is connected to the drying system 100 and is used to process the lees and generate syngas. The gasifier 200 has a first outlet for discharging the syngas. The pretreatment system 300 is connected to the first outlet on the gasifier 200 and is used to filter the syngas. The steam boiler 400 is connected to the pretreatment system 300 and is used to burn the syngas discharged by the pretreatment system 300. The steam boiler 400 is provided with a second outlet and a third outlet. The second outlet is used to discharge combustion exhaust gas, and the third outlet is used to output steam to the distillation process.

[0045] The drying system 100 dries the distiller's grains and then feeds them into the gasifier 200, where the gasifier 200 converts the combustible components in the distiller's grains into syngas. This achieves resource utilization of the distiller's grains, transforming waste distiller's grains into valuable energy, and reducing distiller's grains treatment costs and environmental pollution. The generated syngas is filtered by the pretreatment system 300 and then enters the steam boiler 400 for combustion. The steam produced is used in the distillation process. This improves energy efficiency, reduces dependence on external steam, and lowers production costs. Compared to directly burning distiller's grains, the process of generating syngas from distiller's grains in the gasifier 200 significantly reduces the emission of harmful substances such as carbon dioxide (CO2), sulfur dioxide (SO2), and particulate matter. The pretreatment system 300 further filters the syngas to remove impurities, ensuring a cleaner combustion process. The gasifier 200 can adjust the gasification conditions as needed to produce combustible gases with different compositions and properties, improving the system's flexibility and economy.

[0046] like Figure 1 As shown, in an optional embodiment, the fermentation treatment system further includes a gas distribution cylinder 500 connected to the steam boiler 400, and the gas distribution cylinder 500 is provided with a first inlet that communicates with the third outlet.

[0047] like Figure 1 As shown, in an optional embodiment, the gas distribution cylinder 500 is further provided with a second inlet for introducing steam.

[0048] like Figure 1 As shown, in an optional embodiment, the gas distribution cylinder 500 is provided with a first outlet for drying protein powder and a second outlet for ethanol distillation.

[0049] The steam distribution cylinder 500 has a first inlet connected to the third outlet of the steam boiler 400 to receive high-temperature, high-pressure steam. The steam distribution cylinder 500 also has a second inlet for introducing steam to supplement external steam and ensure stable steam supply. The steam distribution cylinder 500 has a first outlet for protein powder drying and a second outlet for ethanol distillation, distributing steam to different production processes. The steam distribution cylinder 500 ensures uniform steam distribution to meet the needs of different production processes. Through multiple inlets and outlets, the steam distribution cylinder 500 can flexibly adjust the steam distribution ratio to adapt to different production requirements. Equipped with a PLC control system, it can automatically adjust the steam flow rate to ensure the stability and efficiency of the production process.

[0050] like Figure 1 As shown, in an optional embodiment, the second outlet is provided with a flue gas purification system 401 for purifying the combustion exhaust gas.

[0051] In an optional embodiment, the flue gas purification system 401 includes a spray drying absorption tower and / or a bag filter.

[0052] When the flue gas purification system 401 is arranged as a spray drying absorption tower, the exhaust gas after combustion enters the spray drying absorption tower, and the absorbent liquid is sprayed into the tower through the spray device, where it reacts chemically with the harmful substances in the exhaust gas to generate harmless salts, while removing the moisture in the exhaust gas.

[0053] When the flue gas purification system 401 is configured as a bag filter: the exhaust gas after being treated by the spray drying absorption tower enters the bag filter, and the solid particles in the exhaust gas are removed by the filter bags to ensure that the exhaust gas meets environmental protection standards.

[0054] In an optional embodiment, the drying system 100 includes a screw extruder, a drum dryer, and a conveyor, and the drying system 100 also includes a discharge pipe 101 for discharging wastewater.

[0055] In the drying system 100, the distiller's grains are fed into a screw press dewatering machine via a conveyor belt to initially remove excess moisture. The dewatered distiller's grains then enter a rotary drum dryer, where they are further dried using hot air circulation to achieve a suitable dryness for gasification. The dried distiller's grains are then conveyed into the gasifier 200 via a conveyor. Wastewater generated during the drying process is discharged through discharge pipe 101 for further treatment.

[0056] The combination of a screw press dewatering machine and a drum dryer ensures thorough drying of the distiller's grains and improves gasification efficiency. Equipped with a PLC control system, it automatically adjusts temperature and airflow to ensure consistent drying results. Discharge pipe 101 ensures proper wastewater treatment, reducing environmental pollution.

[0057] In an optional embodiment, the gasifier 200 is equipped with a booster fan to drive the syngas to be discharged in a directional manner.

[0058] The dried lees are fed into the feed inlet of gasifier 200 via a screw conveyor. The lees are further dried in the preheating zone of gasifier 200 to remove residual moisture. The lees undergo pyrolysis at high temperatures (600℃-800℃), releasing volatiles. Elements such as carbon and hydrogen in the lees react chemically with the gasifying agent (such as air, oxygen, or steam) to produce carbon monoxide and hydrogen. The generated syngas is discharged through the first outlet and enters the pretreatment system 300.

[0059] The gasifier 200 is equipped with a booster fan to drive the syngas out in a directional manner, ensuring the stability and efficiency of the gasification process.

[0060] like Figure 1 As shown, in an optional embodiment, the gasifier 200 is provided with a branch pipe with one end connected to the first outlet, and the other end of the branch pipe is used to connect to the fermentation system 600.

[0061] The gasifier 200 is equipped with a branch pipe with one end connected to the first outlet, and the other end of the branch pipe is used to connect to the fermentation system 600 to realize the multi-purpose utilization of syngas.

[0062] like Figure 1 As shown, in an optional embodiment, a gas pretreatment area breeding purification skid 601 is provided on the end of the branch pipe away from the gasifier 200.

[0063] A gas pretreatment area purification skid 601 is installed at the end of the branch pipe away from the gasifier 200 to further purify the syngas and ensure its quality.

[0064] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0065] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0066] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0068] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0069] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0070] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0071] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A fermentation processing system, characterized by, The fermentation treatment system comprises: a drying system for drying the vinasse; a gasifier connected to the drying system and used for treating the vinasse and generating synthesis gas, the gasifier having a first discharge outlet for discharging the synthesis gas; a pretreatment system connected to the first discharge outlet of the gasifier and used for filtering the synthesis gas; a steam boiler connected to the pretreatment system and used for burning the synthesis gas discharged by the pretreatment system, the steam boiler being provided with a second discharge outlet for discharging combustion exhaust gas and a third discharge outlet for outputting steam to a distillation process.

2. The fermentation processing system of claim 1, wherein: The fermentation treatment system further comprises a gas distribution cylinder connected to the steam boiler, the gas distribution cylinder being provided with a first inlet in communication with the third discharge outlet.

3. The fermentation processing system of claim 2, wherein: The gas distribution cylinder is further provided with a second inlet for inputting steam.

4. The fermentation process system of claim 2 or 3, wherein: The gas distribution cylinder is provided with a first outlet for drying protein powder and a second outlet for distilling ethanol.

5. The fermentation processing system of claim 1, wherein: The second discharge outlet is provided with a flue gas purification system for purifying the combustion exhaust gas.

6. The fermentation processing system of claim 5, wherein: The flue gas purification system comprises a spray drying absorption tower and / or a bag-type dust collector.

7. The fermentation processing system of claim 1, wherein: The drying system comprises a screw extrusion dewatering machine, a roller dryer and a conveyor, and further comprises a discharge pipeline for discharging sewage.

8. The fermentation processing system of claim 1, wherein: The gasifier is provided with a booster fan for driving directional discharge of the synthesis gas.

9. The fermentation processing system of claim 1, wherein: The gasifier is provided with a branch pipe having one end in communication with the first discharge outlet, and the other end of the branch pipe is used for being connected to a fermentation system.

10. The fermentation processing system of claim 9, wherein: The end of the branch pipe away from the gasifier is provided with a gas pretreatment area breeding purification pry.

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