Vehicle-mounted integrated mash transfer equipment and method thereof

Abstract

The application discloses a kind of vehicle integration mash transport equipment and method thereof, to solve the problems that anaerobic fermentation mash cannot provide continuous, stable, controllable anaerobic constant-temperature environment in the whole transport process in the prior art, resulting in the problem that strain activity cannot be maintained, and transport inoculation scheme is difficult to be industrialized.The application comprises a vehicle body and a closed storage tank unit arranged on the vehicle body, a constant-temperature refrigeration temperature control unit, a full-process anaerobic nitrogen closed protection circulation unit and a sterile quick closed loading and unloading unit.By means of heat preservation structure, refrigeration module and temperature measuring structure, the mash is stably maintained at 36-38℃ throughout the whole process, and the retention rate of bacterial activity is improved.Nitrogen replacement before loading, micro-positive pressure preservation during transport and joint pre-blowing before unloading are three-stage nitrogen grading protection, which is combined with oxygen sensor over-standard automatic nitrogen flow increase and alarm to ensure that the oxygen content in the gas phase in the tank is stably below 0.2ppm throughout the whole process, preventing anaerobic bacteria from being poisoned and lysed by oxygen.The tank top gas phase backflow port is connected to a buffer filter tank, and the nitrogen consumption is reduced.

Description

Technical Field

[0001] This application relates to the field of bio-fermentation technology, specifically to a vehicle-mounted integrated mash transfer device and method. Background Technology

[0002] The production of fuel ethanol from CO biogas anaerobic fermentation relies on Clostridium ethanoliferum (clostridium aerobicum) to convert CO, CO2 and H2 into ethanol. This strain is a strict anaerobic bacterium, with a dissolved oxygen threshold of ≤0.2ppm and an optimal growth temperature of 37℃. If the temperature exceeds 40℃ for a short period of time or the gas phase oxygen is >0.5ppm, the cell membrane will rupture, intracellular enzymes will be inactivated, and autolysis will occur.

[0003] Two CO fermentation ethanol production lines with identical process parameters are located within the same city, with completely uniform feed gas composition, fermentation pH, pressure, strains, nutrient salt formulas, and fermentation temperatures. During production and operation, problems such as metabolic disorders of the fermenters in the single plant, a sharp drop in ethanol production rate, accumulation of byproducts acetic acid / lactic acid, and cell degeneration and inactivation are likely to occur.

[0004] The existing conventional disposal method is as follows: drain all the mash from the decaying tank → coarse washing with clean water in the tank → alkaline washing and soaking → rinsing with pure water → rinsing with acidic water → progressively expanding the culture through the primary seed tank, secondary seed tank, and fermentation tank R1 → inoculating fermentation tank R2 to produce the product. The entire process takes 72 to 120 hours, the entire production line is shut down, raw materials, energy consumption, and labor are continuously wasted, and the entire tank of failed mash cannot be recycled, resulting in serious economic losses.

[0005] To address the aforementioned issues, the industry initially envisioned using mature mash with stable fermentation and high bacterial activity from another plant as seed mash for direct inoculation at a declining plant, thus eliminating the need for emptying, tank washing, and multi-stage propagation. However, currently only two types of transfer equipment exist, neither of which can meet the requirements for anaerobic preservation transfer: one is a simple open-top transfer using ordinary water tankers; the other is a general-purpose chemical anaerobic storage and transportation tank. Both suffer from multiple defects, including lack of temperature control, discontinuous nitrogen protection, incomplete sterilization, air intake during loading and unloading, lack of data traceability, and nitrogen waste. The viable bacteria retention rate after transfer is less than 30%, and fermentation still cannot be quickly restored after inoculation, making this approach unsuitable for industrial implementation. Details are as follows:

[0006] I. Standard Water Tanker Truck Mash Transfer Plan (Industry-standard Temporary Transfer Method)

[0007] 1. Supporting equipment composition: ordinary carbon steel water tank, simple steam hose, single nitrogen inlet, top manhole, handheld four-in-one gas detector, ordinary rubber sealing flange, no refrigeration equipment, no recovery pipeline.

[0008] 2. Complete standardized operating procedure:

[0009] Step 1: Tank pre-cleaning

[0010] The tank is flushed with tap water from the factory through the top manhole. The tank wall is simply rinsed by a person holding a water pipe. Wastewater is discharged directly from the bottom drain. There is no circulating flushing circuit. The manhole, tank corners, and inner walls of the drain pipe cannot be cleaned of the previous mash and bacteria. The flushing time is only 5 to 10 minutes, and there is no control over the flushing water quality or pressure.

[0011] Step 2: Simple steam sterilization

[0012] The steam hose is directly inserted into the manhole to introduce low-pressure steam of 0.08MPa. The steam is turned off after 10 to 15 minutes. There is no constant temperature and pressure maintenance stage. The steam cannot reach the bottom of the tank and the dead corners of the pipeline, resulting in incomplete disinfection. After disinfection, the tank is naturally cooled, and the condensate in the tank is discharged without a direction.

[0013] Step 3: Single nitrogen purging for oxygen removal

[0014] Industrial nitrogen is introduced through a single nitrogen pipeline connected to the bottom drain outlet, while the top manhole is fully open for natural ventilation. The operator uses a portable detector to roughly check the oxygen content every few minutes. If the oxygen content reading is 0%, it is considered qualified, and the manhole is closed.

[0015] It has no pressure regulating valve, no continuous online monitoring, and no micro-volume continuous gas replenishment structure. After the replacement is completed, the nitrogen pipeline is directly removed.

[0016] Step 4: Open-top filling of mash

[0017] Open the discharge valve at the bottom of the fermentation tank, and the mash will flow by gravity and be directly poured into the manhole of the sprinkler tank through the open hose. The top of the tank is completely connected to the atmosphere throughout the filling process, and a large amount of air is dissolved into the mash. After filling, the manhole cover is tightened manually without multiple sealing gaskets.

[0018] Step 5: Local Short-Distance Transportation

[0019] The vehicle has no insulation or refrigeration equipment. In summer, the direct sunlight shines on the tank, and the mash is heated by both the environment and the heat generated by the metabolism of bacteria. The temperature rise can reach 6-9°C in 30 minutes of transportation. There is no nitrogen supply during transportation. The gas phase space inside the tank forms a negative pressure due to bumps, and air continuously seeps in from the manhole flange gaps. There are no temperature and oxygen content monitoring devices, and no data is recorded throughout the process.

[0020] Step 6: Arrival at the factory area and unloading operation

[0021] After the vehicle comes to a complete stop, the nitrogen hose is reconnected, nitrogen is briefly introduced, and then the bottom drain valve is opened. The mash is then pumped into the decay fermentation tank by gravity. During the unloading process, the manhole at the top of the tank is slightly opened to allow nitrogen to enter, and outside air also enters the tank, resulting in secondary oxygenation of the mash.

[0022] Step 7: Tank handling after transfer

[0023] Simply rinsing with water without a standardized steam sterilization process leaves residual mash inside the tank, which can lead to cross-contamination during the next transfer.

[0024] 3. Existing defects

[0025] (1) The tank cleaning and disinfection process was rudimentary, and residual bacteria caused contamination of the fermentation tank.

[0026] The system involves short-term direct flushing with clean water without a circulation loop, short-term low-pressure steam injection without pressure maintenance, and numerous blind spots for disinfection in manholes, sewage pipes, and tank corners. This results in residual aerobic bacteria and early mash residue inside the tank. After transferring high-quality seed mash, bacteria proliferate in large numbers and compete with Clostridium ethanolii for nutrients after inoculation, causing fermentation disorder, a sharp drop in alcohol production, and even tank overflow and scrapping.

[0027] (2) Oxygen can easily and continuously invade, causing massive lysis of bacteria.

[0028] A single open-air nitrogen purging is used to replace a large amount of residual oxygen; during transportation, negative pressure can easily enter through the sealed gaps of the tank and the manhole flange, resulting in excessive dissolved oxygen in the mash; the survival rate of live bacteria after transportation is less than 30%, and fermentation cannot be quickly resumed after inoculation.

[0029] (3) The temperature rise during mash transportation exceeded the standard, and the bacteria were inactivated by autolysis at high temperature.

[0030] When the mash is stored in a tank and transported within the same city for 30-60 minutes, the temperature of the mash rises by more than 6°C. When the temperature exceeds the tolerance threshold of 40°C, the intracellular metabolic enzymes of Clostridium ethanolii denature and the cells autolyze, resulting in a significant decrease in the activity of the seed mash.

[0031] (4) The entire loading and unloading process is carried out in an open manner. During the docking process, a large amount of air is dissolved into the mash, which causes secondary damage to anaerobic bacteria.

[0032] During filling, the material is fed through the top manhole. When nitrogen is introduced through the unloading manhole, air continues to come into contact with the mash, further increasing the dissolved oxygen concentration and accelerating bacterial death.

[0033] (5) Abnormalities in transportation cannot be intervened in a timely manner

[0034] There was no real-time digital monitoring of oxygen content and mash temperature throughout the process; only intermittent manual handheld devices were used for detection. There were no alarms or automatic gas replenishment / cooling measures when the temperature or oxygen content exceeded the standard. The bacteria were not found to be ineffective until after unloading, and the entire tank of mash was scrapped.

[0035] (6) Lack of end-to-end data storage and traceability makes it impossible to pinpoint process problems in production anomalies.

[0036] Without an automatic recording device, all transfer time, temperature, oxygen content, operators, and transfer volume rely on handwritten paper records, which are easily lost or tampered with; when fermentation indicators are abnormal, it is impossible to trace back the transfer conditions, making it difficult to optimize the process.

[0037] II. General-purpose anaerobic liquid transfer tank for chemical industry (standard finished product storage and transportation equipment on the market, general-purpose anaerobic transfer tank for chemical industry)

[0038] 1. Supporting equipment composition: single-layer carbon steel pressure tank, single nitrogen inlet, ordinary inlet and outlet flange valves, external cooling water interface (no vehicle-mounted refrigeration), simple pressure gauge, no independent oxygen sensor, no insulation jacket, no quick-release sterilization port, no joint pre-purge branch, and no PLC automatic control system.

[0039] 2. Work process details:

[0040] (1) Tank pretreatment: Only external cold water is used to rinse the inner wall, and there is no matching steam sterilization interface. If sterilization is required, an additional temporary steam pipeline needs to be connected, which is cumbersome to disassemble and assemble. The tank is welded and formed, and the weld seam and bottom dead corner cannot be thoroughly cleaned.

[0041] (2) Nitrogen purging: Nitrogen is introduced once for 5 minutes before loading. There is no layered purging design. The purging exhaust gas is directly released. After loading, the nitrogen source is cut off. There is no gas replenishment circuit during the entire transportation process.

[0042] (3) Temperature control: Only an external cooling water interface is reserved. Water cannot be continuously supplied during vehicle operation. The vehicle can only cool down briefly when stationary. The temperature continues to rise during operation.

[0043] (4) Loading and unloading operations: ordinary flange connection, no pre-purge branch, the inside of the pipeline comes into direct contact with air at the moment of flange disassembly and assembly; no sterile quick clamps, the sealing gasket is prone to aging and leakage.

[0044] (5) Process monitoring: Only mechanical pressure gauges are used, without real-time collection of gas phase oxygen and mash temperature, and there are no alarms or automatic adjustment functions for exceeding the standard.

[0045] (6) Nitrogen consumption: All nitrogen from displacement and depressurization is directly discharged into the atmosphere without recovery devices, resulting in high nitrogen consumption and high operating costs.

[0046] 3. Existing defects:

[0047] (1) It can only be connected to external cold water, and the temperature cannot be stably controlled during operation.

[0048] Cooling water relies on a fixed water source within the plant area. During transportation, heat exchange cannot be continuously maintained. Sunlight and road bumps cause interruptions in heat exchange, resulting in continuous fluctuations in mash temperature and damage to microbial activity.

[0049] (2) Nitrogen purging is done in one go, and nitrogen consumption costs are high.

[0050] Once loading is complete, the nitrogen supply is cut off, and there is no continuous positive pressure protection during transportation; all exhaust gas from tank depressurization and replacement is directly discharged, resulting in serious nitrogen waste and high long-term transportation and operation costs.

[0051] (3) The pipeline flanges have no pre-purge structure, and air enters the pipeline and contaminates the mash at the moment of connection.

[0052] Ordinary flanges lack air isolation during disassembly and assembly, leaving air trapped inside the joint. When unloading, this air enters the fermentation tank along with the mash, introducing oxygen and disrupting the anaerobic system.

[0053] (4) No automatic adjustment or alarm mechanism in case of excessive temperature or excessive oxygen.

[0054] It only has mechanical pressure gauges, no digital sensor data acquisition, and no programmed linkage actuators. When abnormal operating conditions occur, they can only be handled manually on-site, which is highly delayed and the loss of bacteria is irreversible.

[0055] (5) The tank has a fixed welded structure and no quick-release sterilization and sewage outlet, resulting in dead corners for cleaning and disinfection.

[0056] The tank welds and bottom cannot be quickly disassembled, and high-temperature steam cannot fully cover the tank. When transferring mash from different plant areas, cross-contamination of materials and bacteria can easily occur.

[0057] In summary, the main drawbacks of the existing technology are: it cannot provide a continuous, stable, and controllable anaerobic constant temperature environment for strictly anaerobic fermentation broth throughout the entire transfer process, and it lacks comprehensive monitoring and protection measures, which leads to the inability to maintain the activity of the strains and makes the transfer and inoculation scheme difficult to apply industrially. Summary of the Invention

[0058] Therefore, this application provides an integrated vehicle-mounted mash transfer device and method to solve the problem that the existing technology cannot provide a continuous, stable, and controllable anaerobic constant temperature environment for anaerobic fermentation mash during the entire transfer process, resulting in the inability to maintain the activity of the strains and the difficulty in industrial application of the transfer inoculation scheme.

[0059] To achieve the above objectives, this application provides the following technical solution:

[0060] In a first aspect, an integrated vehicle-mounted mash transfer device is characterized by comprising: a vehicle body and a sealed storage and transportation tank unit disposed on the vehicle body, a constant temperature refrigeration and temperature control unit, a full-process anaerobic nitrogen sealed protection circulation unit, a sterile rapid sealed loading and unloading unit, and an automatic control unit.

[0061] The sealed storage and transportation tank unit includes a tank body and a circulating flushing assembly. The tank body is provided with an insulation structure inside or outside. The bottom and top of the tank body are respectively provided with a sewage discharge and sterilization composite port and a manhole. The tank body is provided with a steam spray assembly inside. The circulating flushing assembly is used to connect to one interface of the sewage discharge and sterilization composite port to clean the tank body.

[0062] The constant temperature refrigeration and temperature control unit includes a refrigeration module and a heat exchange module. The refrigeration module is located on the side of the main body of the tank. The heat exchange module is connected to the refrigeration module and is disposed on the inner wall of the main body of the tank. A temperature measuring structure is disposed inside the main body of the tank.

[0063] The fully anaerobic nitrogen closed-loop protection circulation unit includes a high-pressure nitrogen supply device, a dual-path nitrogen pressure regulating valve group, an online gas phase oxygen sensor, and a nitrogen circulation recovery buffer filter tank. The gas outlet of the high-pressure nitrogen supply device is connected to the inlet of the dual-path nitrogen pressure regulating valve group. The outlet of the dual-path nitrogen pressure regulating valve group is connected to a pre-purge branch and a continuous pressure-maintaining branch of the tank body, respectively. The continuous pressure-maintaining branch of the tank body is connected to the gas phase space at the top of the tank body. The online gas phase oxygen sensor is installed in the gas phase area of ​​the manhole. The gas phase reflux port at the top of the tank body is connected to the inlet of the buffer filter tank through a third pipeline. The outlet of the buffer filter tank is connected to the inlet of the dual-path nitrogen pressure regulating valve group through a fourth pipeline. A pressure relief valve is installed at the top of the tank body. The pressure relief valve's exhaust outlet is connected to the buffer filter tank through a fifth pipeline.

[0064] The aseptic rapid sealed loading and unloading unit includes an inlet / outlet connector and a pre-purge branch. Each inlet / outlet connector is connected in parallel with a separate pre-purge branch. The inner port of the inlet / outlet connector is connected to the inlet / outlet of the tank body, and the outer port is used for detachable connection with the pipeline of the fermentation tank in the plant area. The air inlet of the pre-purge branch is connected to the air outlet of the dual-path nitrogen pressure regulating valve group, and the air outlet of the pre-purge branch is located inside the inlet / outlet connector.

[0065] The automatic control unit includes a control module and an alarm unit connected to the control module. The control module is also connected to a steam spray assembly, a refrigeration module, a heat exchange module, a high-pressure nitrogen supply device, a dual-path nitrogen pressure regulating valve group, a gas phase oxygen online sensor, and a pressure safety relief valve.

[0066] Optionally, the vehicle body is a van-type sprinkler truck chassis, with a cab at the front.

[0067] The insulation structure is a polyurethane insulation layer disposed on the outer wall of the main body of the tank;

[0068] The circulating flushing assembly includes a circulating cleaning water pump. The inlet of the circulating cleaning water pump is connected to an interface of the sewage discharge and sterilization composite port through a first pipeline, and the outlet of the circulating cleaning water pump is connected to a flushing port provided at the manhole through a second pipeline.

[0069] Optionally, the tank body includes an inner tank and an outer tank, and the insulation structure is a vacuum insulation interlayer formed between the inner tank and the outer tank, wherein the vacuum insulation interlayer is filled with high-density polyurethane foam insulation material.

[0070] Both the inner and outer tanks are made of 316L stainless steel.

[0071] The manhole is sealed with a cover plate, which integrates five sets of through-hole installation channels, namely, nitrogen main inlet, oxygen sensor mounting base, temperature probe wiring port, nitrogen gas phase reflux port, and pressure relief valve mounting position.

[0072] Optionally, the steam spray assembly includes a steam spray pipeline and multiple atomizing nozzles. The steam spray pipeline is arranged in a ring around the inner wall of the tank body, and multiple spray holes are spaced apart on the steam spray pipeline. Each spray hole is equipped with a corresponding atomizing nozzle.

[0073] The sewage discharge and sterilization composite port has a snap-on quick-release structure. The first interface of the sewage discharge and sterilization composite port is connected to the interior of the tank body. The second interface of the sewage discharge and sterilization composite port is used to connect to the external sewage discharge pipeline or the inlet of the circulating cleaning water pump. The third interface of the sewage discharge and sterilization composite port is connected to the steam pipeline. The steam pipeline is used to connect to the external steam source in the plant area and is connected to the spray inlet of the steam spray assembly.

[0074] Optionally, the refrigeration module is a vehicle-mounted compressor refrigeration unit or a vehicle-mounted dry ice cold storage insulation panel system, and is equipped with a power supply module;

[0075] The heat exchange module is a refrigeration heat exchange coil, which is spirally wrapped around and attached to the inner wall of the tank body.

[0076] Optionally, the temperature measuring structure employs a multi-point temperature sensing probe, with at least three such probes, which are respectively arranged vertically in the upper, middle, and lower regions inside the main body of the tank.

[0077] Optionally, the high-pressure nitrogen supply device includes two sets of nitrogen cylinders, which are fixed to the vehicle body by a vehicle-mounted bracket;

[0078] The buffer filter can is equipped with a double-layer filter element consisting of non-woven fabric and activated carbon.

[0079] The outlet of the dual-path nitrogen pressure regulating valve group is connected to two independent gas supply branches. One gas supply branch is the pre-purging branch, whose outlet is connected to the inlet / outlet connector. The other gas supply branch is the tank continuous pressure holding branch, whose outlet is connected to the gas phase space at the top of the tank body, for continuously replenishing a small amount of gas into the tank.

[0080] Optionally, the control module includes a control cabinet and a touch screen. The control cabinet is mounted on the vehicle body, and the touch screen is mounted on the cabinet of the control cabinet or independently mounted in the driver's cab of the vehicle body. The touch screen is bidirectionally connected to the controller on the control cabinet. The touch screen has a built-in storage module and a human-machine interface. The alarm unit is located at the top center of the vehicle body or at the top of the control cabinet.

[0081] Optionally, it also includes a safety auxiliary support unit, which includes a vehicle-mounted fire extinguishing device, a tank electrostatic grounding clamp, a pipeline anti-vibration fixing bracket, a nitrogen leak detection alarm, and a steam pipeline heat insulation and anti-scalding protective sleeve.

[0082] The control module is also connected to the central control room via a communication module.

[0083] Secondly, a vehicle-mounted integrated mash transfer method, using the aforementioned vehicle-mounted integrated mash transfer equipment, includes the following steps:

[0084] S1. Aseptic pretreatment of transfer tank

[0085] Close all manholes, sewage discharge and sterilization combined ports, and material valves. Start the circulating flushing assembly to create a closed-loop flushing system between the cleaning medium inside the tank body and the circulating flushing pipeline. Then, switch the pipeline to connect the steam source to the steam spray assembly inside the tank body, introduce saturated low-pressure steam, and spray the entire interior of the tank body. After sterilization, close the steam valves, allow the tank to cool naturally, and then drain the condensate.

[0086] S2, Deep Nitrogen Replacement and Precooling of Tank

[0087] The refrigeration module is activated, and the refrigerant circulates within the heat exchange module to pre-cool the tank body. The tank's continuous pressure-maintaining branch of the dual-path nitrogen pressure-regulating valve group is opened, allowing nitrogen to continuously flow upwards from the bottom drain and sterilization port into the top of the tank body, achieving layered nitrogen purging and replacement from bottom to top. A small exhaust gap is reserved at the top manhole. The online gas phase oxygen sensor at the top monitors the gas phase oxygen content in real time and uploads the data to the control module. After purging continues until the gas phase oxygen content reaches the standard, the top exhaust gap is closed to maintain a slight positive pressure of 0.02 MPa inside the tank.

[0088] S3, Sealed aseptic filling of mature seed mash

[0089] Secure the inlet and outlet connectors to the outlet pipeline of the stable fermentation tank in the output plant area with clamps; open the pre-purge branch and continuously flush the trapped air inside the connector with nitrogen; after the oxygen content of the connector branch reaches the standard, slowly open the outlet valve of the fermentation tank and use the fermentation tank's own pressure to pressurize the mature anaerobic mash into the main body of the tank. Throughout the filling process, the tank's continuous pressure-maintaining branch continuously replenishes nitrogen, and the control module maintains a slight positive pressure of 0.02MPa inside the tank.

[0090] S4, same-city road transport with constant temperature and anaerobic protection throughout the entire process.

[0091] During the journey, the temperature sensor probe uploads temperature data in real time, and the control module automatically adjusts the refrigeration load according to the temperature; the tank's continuous pressure-maintaining branch continuously replenishes a small amount of gas; when the temperature sensor probe or oxygen sensor detects an abnormality, the control module automatically implements linkage protection such as increasing refrigeration power, increasing nitrogen flow, and alarm.

[0092] S5, Receiving plant area pipeline pre-replacement and closed unloading inoculation

[0093] Tightly seal the discharge connector of the main body of the tank to the feed pipeline of the decay fermentation tank in the receiving plant area; open the pre-purge branch to replace the air in the joint gap; maintain a slight positive pressure of 0.02 MPa nitrogen in the tank, slowly open the discharge valve, and rely on the nitrogen pressure in the tank to transport the high-activity seed mash into the decay fermentation tank in a closed manner. Throughout the discharge process, nitrogen is continuously replenished through the tank's continuous pressure-maintaining branch; after all the mash has been transported, close the discharge valve and the valve of the tank's continuous pressure-maintaining branch.

[0094] S6. Disinfection of the tank in situ after transfer.

[0095] After unloading, the circulating flushing assembly is restarted to clean the inside of the tank body, and the steam spray assembly is used to sterilize the inside of the tank body with steam. Then, the tank body is emptied and dried to keep it in a sterile and ready-to-use state.

[0096] S7. Data archiving and retention

[0097] Operators log in with administrator privileges, export complete operational data for this transfer, and complete the entire cross-plant transfer and inoculation operation.

[0098] Compared with the prior art, this application has at least the following beneficial effects:

[0099] 1. By setting up an insulation structure on the main body of the tank, as well as an independent vehicle-mounted refrigeration module and temperature measurement structure, and setting up three independent temperature probes in the upper, middle and lower areas of the tank, the temperature of different liquid levels in the tank can be measured throughout the entire process. This ensures that the mash is kept within the suitable growth temperature range of 36~38℃ for microorganisms during the entire transportation process, and the microbial activity retention rate is increased to over 90%.

[0100] 2. By implementing nitrogen-graded protection in three stages—nitrogen replacement before loading, continuous pressure maintenance during transportation, and joint purging before unloading—pre-purging before joint connection eliminates air gaps, maintaining a continuous 0.02MPa micro-positive pressure inside the tank to prevent negative pressure air intake, and automatically increasing nitrogen flow and triggering an alarm when the oxygen sensor exceeds the limit, oxygen is isolated, ensuring that the gas phase oxygen content inside the tank remains consistently below 0.2ppm throughout the process. This significantly reduces the proportion of anaerobic bacteria that die from oxygen poisoning, meeting the strict anaerobic requirements.

[0101] 3. By connecting the gas phase reflux port at the top of the tank to the nitrogen circulation and recovery buffer filter tank, and further installing a non-woven fabric + activated carbon double-layer filter element in the buffer tank, the volatile organic matter of the mash entrained in the reflux nitrogen can be filtered and removed. The filtered clean nitrogen is reconnected to the inlet pipe of the dual-path nitrogen pressure regulating valve group for circulation and reuse, with only a small amount discharged in extreme overpressure situations, thereby improving nitrogen utilization, reducing overall consumption, and lowering long-term transportation and operation costs.

[0102] 4. The tank body is equipped with a steam spray system for in-situ high-temperature sterilization; it also features a circulating flushing system for cleaning the tank body; furthermore, both the inner and outer tanks are made of 316L stainless steel, with a snap-on quick-release drain and sterilization port at the bottom, allowing for manual disassembly without tools and facilitating thorough cleaning of the drain channels; a vehicle-mounted circulating cleaning pump, combined with a closed-loop circulating flushing pipeline, achieves full-area circulating flushing of the tank's inner wall; the full-area steam spray pipeline inside the tank surrounds the tank and evenly distributes atomizing nozzles, with 121℃ saturated steam providing full-coverage high-temperature sterilization of the tank's inner wall, heat exchange coils, and all joints, ensuring sterilization without any blind spots.

[0103] 5. Through a dedicated explosion-proof PLC multi-level interlocking control system (control module), abnormal operating conditions are automatically intervened, and the data throughout the process is tamper-proof and permanently traceable. It is equipped with an explosion-proof PLC control cabinet and a touch screen operation panel. Temperature and oxygen content are collected and uploaded in real time at a frequency of once per second. The PLC has a four-stage temperature control logic and oxygen content interlocking threshold preset inside. When over-temperature or over-oxygen occurs, the system automatically executes linkage protection actions such as cooling load increase, increasing nitrogen flow, and audible and visual alarms. The operation interface of the touch screen operation panel is set with three-level hierarchical permission management to effectively prevent unauthorized operation and data forgery.

[0104] 6. Mature mash can be directly added for inoculation, shortening the recovery cycle of the decaying fermentation tank from 72-120 hours to less than 24 hours, significantly reducing production capacity and raw material loss. Mature mash with stable fermentation and high bacterial activity from another plant can be directly and sealedly transported to the decaying plant through a vehicle-mounted transfer system (i.e., vehicle-mounted integrated mash transfer equipment). There is no need to drain the original failed mash. After being directly added to the decaying fermentation tank, the bacteria can quickly resume ethanol metabolism. The downtime of the production line is greatly reduced, and the waste of raw material gas, water and electricity consumption and labor costs are greatly avoided. Attached Figure Description

[0105] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0106] Figure 1 This is a schematic diagram of the structure of an integrated vehicle-mounted mash transfer device provided in one embodiment of this application;

[0107] Figure 2 This is a schematic diagram of the pipeline connection of an integrated vehicle-mounted mash transfer device provided in one embodiment of this application;

[0108] Figure 3 A circuit diagram of an integrated vehicle-mounted mash transfer device provided in one embodiment of this application.

[0109] Explanation of reference numerals in the attached figures:

[0110] 1. Vehicle body; 2. Vehicle front; 3. Tank body main body; 31. Sewage discharge and sterilization composite port; 4. Online gas phase oxygen sensor; 5. Pressure safety relief valve; 6. Temperature sensor probe; 7. Refrigeration module; 8. Heat exchange module; 9. Buffer filter tank; 10. Control cabinet; 11. Power supply module; 12. Nitrogen supply device; 13. Controller; 14. Touch screen operation panel; 15. Dual-channel nitrogen pressure regulating valve group; 16. Steam spray assembly; 161. Atomizing nozzle; 17. Circulating cleaning water pump; 18. Alarm unit; 19. Central control room; 20. First pipeline; 21. Second pipeline; 22. Third pipeline; 23. Fourth pipeline; 24. Fifth pipeline; 25. Steam pipeline; 26. Steam spray pipeline; 27. Pre-purge branch; 28. Tank continuous pressure maintenance branch; 29. ​​Sixth pipeline. Detailed Implementation

[0111] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0112] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0113] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0114] One embodiment of this application, such as Figures 1-3 As shown, an integrated vehicle-mounted mash transfer device is used for long-distance live transport of strictly anaerobic fermentation mash, including: a vehicle body 1 and a double-layer vacuum-insulated and sealed storage and transport tank unit installed on the vehicle body 1, an integrated vehicle-mounted constant temperature refrigeration and temperature control unit, a full-process anaerobic nitrogen sealed protection circulation unit, a sterile rapid sealed loading and unloading unit, and a vehicle-mounted intelligent interlocking automatic control unit.

[0115] The vehicle body 1 is a 4.2m box-type sprinkler truck chassis, with a cab 2 at the front. All parts that come into contact with the mash, steam, and nitrogen are made of 316L mirror-polished stainless steel, while the remaining supporting frame is made of carbon steel sprayed with anti-corrosion epoxy paint. The entire equipment is divided into six independent linkage units (including the above five units and the following safety auxiliary supporting units). Each unit can be installed on the box-type sprinkler truck chassis through corresponding brackets.

[0116] The sealed storage and transportation tank unit includes a tank body 3 and a circulating flushing assembly. The tank body 3 is provided with an insulation structure inside or outside. The bottom and top of the tank body 3 are respectively provided with a sewage discharge and sterilization composite port 31 and a manhole. The tank body 3 is provided with a steam spray assembly 16 inside. The circulating flushing assembly is used to connect to one interface of the sewage discharge and sterilization composite port 31 to clean the inner wall of the tank body 3.

[0117] The constant temperature refrigeration and temperature control unit includes a refrigeration module 7 and a heat exchange module 8. The refrigeration module 7 is located on the side of the tank body 3. The heat exchange module 8 is connected to the refrigeration module 7 and is set on the inner wall of the tank body 3. A temperature measuring structure is set inside the tank body 3.

[0118] The fully anaerobic nitrogen closed-loop protection circulation unit includes a high-pressure nitrogen supply device 12, a dual-path nitrogen pressure regulating valve group 15, a gas phase oxygen online sensor 4, a nitrogen circulation recovery buffer filter tank 9, and a pressure relief valve 5. The gas outlet of the high-pressure nitrogen supply device 12 is connected to the inlet of the dual-path nitrogen pressure regulating valve group 15 via a sixth pipeline 29. The outlet of the dual-path nitrogen pressure regulating valve group 15 is connected to the pre-purge branch 27 and the tank continuous pressure holding branch 28, respectively. The tank continuous pressure holding branch 28 is connected to the gas phase space at the top of the tank body 3. The gas phase oxygen online sensor 4 is installed on the... The gas phase zone of the orifice; the gas phase reflux port at the top of the tank body 3 is connected to the inlet of the nitrogen circulation recovery buffer filter tank 9 through the third pipeline 22, and the outlet of the nitrogen circulation recovery buffer filter tank 9 is connected to the inlet of the dual-path nitrogen pressure regulating valve group 15 through the fourth pipeline 23 to form nitrogen circulation; the pressure safety relief valve 5 is installed at the top of the tank body 3, the pressure safety relief valve 5 has a starting pressure of 0.3MPa, and automatically relieves pressure when overpressured. Its pressure relief tail gas outlet is connected to the nitrogen circulation recovery buffer filter tank 9 through the fifth pipeline 24, so that there is no direct discharge of nitrogen and the transportation safety of the vehicle tank is guaranteed;

[0119] The aseptic rapid sealed loading and unloading unit includes a sanitary aseptic rapid inlet / outlet connector and a nitrogen pre-purge branch 27. Each set of inlet / outlet connectors (including an inlet connector and an outlet connector) is connected in parallel with a separate pre-purge branch 27 and is independently controlled by a valve. The inlet / outlet connectors can be clamp-type inlet / outlet connectors. The inner port of the inlet / outlet connector is connected to the inlet / outlet of the tank body 3, and the outer port is used for detachable connection with the feed line of the fermentation tank in the plant area. That is, the inner port of the inlet connector is connected to the inlet of the tank body 3, and the inner port of the outlet connector is connected to the outlet of the tank body 3. The outer ports of the inlet connector and the outlet connector are detachably connected to the feed line of the fermentation tank in the plant area. The air inlet of the pre-purge branch 27 is connected to the air outlet of the dual-path nitrogen pressure regulating valve group 15, and the air outlet of the pre-purge branch 27 is located inside the inlet / outlet connector.

[0120] The automatic control unit includes a control module and an alarm unit 18 connected to the control module. The control module is also connected to a steam spray assembly 16, a refrigeration module 7, a heat exchange module 8, a nitrogen supply device 12, a dual-path nitrogen pressure regulating valve group 15, a gas phase oxygen online sensor 4, and a pressure safety relief valve 5.

[0121] Preferably, the circulating flushing assembly includes a circulating cleaning water pump 17 and a circulating flushing pipeline. The inlet of the circulating cleaning water pump 17 is connected to an interface of the sewage discharge sterilization composite port 31 through a first pipeline 20, and the outlet of the circulating cleaning water pump 17 is connected to a flushing port provided at the manhole through a second pipeline 21. The first pipeline 20 and the second pipeline 21 constitute the circulating flushing pipeline.

[0122] More preferably, the steam spray assembly 16 includes a steam spray pipe 26 and a plurality of atomizing nozzles 161. The steam spray pipe 26 is arranged in a ring around the inner wall of the tank body 3, and a plurality of spray holes are spaced apart on the steam spray pipe 26. Each spray hole is equipped with a corresponding atomizing nozzle 161. The spray direction of the atomizing nozzle is towards the inner wall surface of the tank body 3 and the internal space of the tank. The steam spray sterilization pipe is fixed to the inner wall surface of the tank body 3 by a plurality of clamps or welded fixing brackets.

[0123] More preferably, the sewage discharge and sterilization composite port 31 has a snap-on quick-release structure. The first interface of the sewage discharge and sterilization composite port 31 is connected to the interior of the tank body 3; the second interface of the sewage discharge and sterilization composite port 31 is used to connect to the external sewage discharge pipeline or the inlet of the circulating cleaning water pump 17; the third interface of the sewage discharge and sterilization composite port 31 is connected to the steam pipeline 25, which is used to connect to the external steam source of the plant area and is connected to the spray inlet of the spray assembly.

[0124] The sewage pipe and steam pipe 25 are respectively equipped with sewage electric valve and steam electric valve, and the control terminal of each electric valve is electrically connected to the corresponding output terminal of PLC controller 13; the steam pipe 25 is also equipped with a heat insulation and anti-scalding protective sleeve.

[0125] The aforementioned sewage discharge and sterilization composite port 31 can be a DN80 snap-on quick-release structure, equipped with a food-grade fluororubber sealing ring, requiring no tools for manual disassembly and assembly; its interface is divided into two paths, one for discharging sewage and emptying mash and cleaning wastewater, and the other for connecting to a 121℃ saturated steam sterilization spray pipeline (steam spray pipeline 26); the steam spray pipeline 26 inside the tank surrounds the tank body and is evenly arranged with multiple atomizing nozzles 161, so that the steam can fully cover the inner wall of the tank, the coils, and dead corners;

[0126] The circulating cleaning water pump 17 is a vehicle-mounted small stainless steel circulating water pump. Its inlet and outlet are respectively connected to the sewage discharge and sterilization composite port 31 at the bottom of the tank and the manhole flushing port at the top (the flushing port can be installed on the manhole cover). A quick-connect coupling can be installed at the second interface of the sewage discharge and sterilization composite port 31, so that: in the sewage discharge mode, it is connected to the external sewage pipeline (the main sewage discharge pipe of the plant area); in the circulating flushing mode, it is connected to the inlet of the circulating cleaning water pump 17. By starting the circulating cleaning water pump 17, the cleaning medium is drawn out from the sewage discharge and sterilization composite port 31, pressurized and sent into the tank through the flushing port, flushing the inner wall of the tank from top to bottom, and flowing back to the sewage discharge and sterilization composite port 31 to form a closed circulating flushing loop; one of these two modes can be performed.

[0127] Preferably, the main body 3 of the tank adopts a double-layer vacuum insulated tank, which includes an inner tank and an outer tank. The insulation structure is a vacuum insulation interlayer formed between the inner tank and the outer tank. Both the inner tank and the outer tank are made of 316L stainless steel and are integrally spun, with an effective volume of 5m³. 3 The design pressure is 0.4MPa; the inner tank has a wall thickness of 3mm and the outer tank has a wall thickness of 2mm. All welds are mirror polished with Ra≤0.8μm. The upper and lower ends of the inner and outer tanks are respectively equipped with upper and lower end caps, which are rounded to the inner and outer tanks respectively, with no right angle material accumulation dead corners.

[0128] The vacuum insulation interlayer is filled with 50mm thick high-density polyurethane foam insulation material. The interlayer is vacuum-treated to block environmental heat radiation and heat conduction. The outer tank is coated with weather-resistant and anti-corrosion paint to resist sun and rain.

[0129] In another embodiment, the insulation structure is a polyurethane insulation layer disposed on the outer wall of the tank body 3.

[0130] Preferably, the manhole can be a DN500 pressure-sealed manhole; a double-layer silicone sealing cover is provided at the manhole, and the cover integrates at least 5 sets of installation channels that penetrate the cover, namely, the main nitrogen inlet, the oxygen sensor mounting base, the three-layer temperature probe wiring port, the nitrogen gas phase reflux port, and the pressure relief valve mounting position. The inner end of each installation channel is connected to the gas phase space inside the tank body 3, and the outer end is respectively connected to the nitrogen pipeline, the gas phase oxygen online sensor 4 (oxygen sensor), the signal cable, the nitrogen recovery pipeline (third pipeline 22) and the safety relief valve.

[0131] The aforementioned online gas phase oxygen sensor 4 is installed in the gas phase zone of the top manhole. Its detection range is 0-10 ppm, and its accuracy is ±0.05 ppm. It has three preset oxygen content thresholds: ① Qualified threshold: oxygen content <0.2 ppm, allowing filling and unloading; ② First-level warning threshold: 0.2-0.5 ppm, yellow light warning, automatically increasing the gas supply flow of branch B; ③ Danger threshold: ≥0.5 ppm, red audible and visual alarm, locking the loading and unloading valve, and continuously purging and replacing with high-flow nitrogen.

[0132] Preferably, the refrigeration module 7 is a vehicle-mounted compressor refrigeration unit, and is equipped with a power supply module 11. The power supply module 11 can be powered by an independent 24V battery, eliminating the need for an external factory power supply; the compressor has a cooling capacity of 8.5kW, uses R404A refrigerant, and can run continuously for more than 8 hours, suitable for all-day transport within the same city. The refrigeration unit also has its own cooling fan, ensuring stable operation whether the vehicle is in motion or stationary.

[0133] In another embodiment, for short-distance transport, the compressor refrigeration unit can replace the vehicle-mounted dry ice cold storage insulation panel system. The interlayer has a built-in cold storage module, which does not require continuous power supply and maintains a constant temperature of 36-38°C. For micro transport vehicles, the semiconductor refrigeration array on the outer wall of the tank can be replaced.

[0134] More preferably, the heat exchange module 8 is a refrigeration heat exchange coil, and the inlet and outlet of the refrigeration heat exchange coil are connected to the refrigerant outlet and return port of the refrigeration unit, respectively. The refrigeration heat exchange coil is spirally wrapped around the inner wall of the tank body 3. The coil has a diameter of DN20 and is made of 316L stainless steel. It is tightly fitted to the tank wall throughout without gaps. The refrigerant circulates inside the coil to remove heat from the tank. Electric shut-off valves are installed at the inlet and outlet of the refrigeration heat exchange coil, and the on / off is automatically controlled by the PLC controller 13.

[0135] In another embodiment, the aforementioned spiral coil on the tank wall can also replace the immersion U-shaped refrigerant heat exchange tube bundle inside the tank to improve the low-temperature heat exchange efficiency.

[0136] Preferably, it also includes safety auxiliary supporting units, including vehicle-mounted fire extinguishing device, tank electrostatic grounding clamp, pipeline anti-vibration fixing bracket, nitrogen leak detection alarm, and steam pipeline 25 heat insulation and anti-scalding protective sleeve, to meet the safety regulations for road transportation of hazardous chemical fermentation materials.

[0137] Preferably, the nitrogen supply device 12 includes two sets of nitrogen cylinders, which are fixed to the vehicle body 1 by a vehicle bracket; specifically, it has two 40L high-purity nitrogen cylinders (nitrogen purity ≥99.999%), with a standard pressure of 15MPa per cylinder. The two cylinders are connected in parallel and automatically switch to supply gas, and each cylinder can support continuous pressure stabilization and gas replenishment for 6 hours.

[0138] The gas phase reflux port at the top of the main body 3 is connected to the nitrogen circulation and recovery buffer filter tank 9. The buffer filter tank 9 is equipped with a double-layer filter element of non-woven fabric and activated carbon to filter the volatile organic matter in the mash. All the depressurization and replacement exhaust gas enters the nitrogen circulation and recovery buffer filter tank 9, and after filtration, it is reconnected to the pressure regulating valve group for recycling. Only a small amount of nitrogen is released when the pressure exceeds the standard, reducing nitrogen consumption by more than 60%.

[0139] The outlet of the dual-path nitrogen pressure regulating valve group 15 is connected to two independent gas supply branches, and the pressure is precisely regulated. One gas supply branch is the pre-purging branch 27 (branch A), whose outlet is connected to the inlet / outlet joint (loading / unloading joint). The output pressure of branch A is 0.15MPa, which is used for air replacement in the gap of the loading / unloading clamp joint. The other gas supply branch is the tank continuous pressure maintaining branch 28 (branch B), whose outlet is connected to the gas phase space at the top of the tank body 3. The output pressure is 0.02MPa, which continuously replenishes a small amount of gas to the gas phase space inside the tank to maintain a slight positive pressure inside the tank and prevent outside air from seeping in.

[0140] The aforementioned pre-purge branch 27 is equipped with an independent electromagnetic on / off valve. After the connecting pipeline is clamped and locked, the purge branch is opened for ventilation for 3 minutes to completely expel the air trapped in the gap between the inlet and outlet joints. Then, the main feed / discharge valve is opened to prevent oxygen from entering the mash during the instant of connection. The sanitary sterile quick clamp seals the loading and unloading joints and is connected in parallel with the independent nitrogen pre-purge branch 27, eliminating the defect of air intrusion into the mash during the instant of pipeline connection, and achieving no openness and no dissolved oxygen during the entire loading and unloading process.

[0141] Preferably, the control module includes a control cabinet 10 and a touch screen 14. The control cabinet 10 is mounted on the vehicle body 1, and the touch screen 14 is mounted on the cabinet of the control cabinet 10 or independently mounted in the driver's cab of the vehicle body 1. The touch screen 14 has a bidirectional communication connection with the controller 13 inside the control cabinet 10, and the touch screen 14 has a built-in storage module and a human-machine interface. The alarm unit 18 is located at the top center of the vehicle body 1 or at the top of the cabinet of the control cabinet 10. The control module is also connected to the central control room 19 via a communication module.

[0142] The PLC explosion-proof control cabinet 10 adopts an intrinsically safe explosion-proof design, suitable for the flammable and explosive CO gas environment of the fermentation workshop. All electrically linked components include: a refrigeration unit, a nitrogen dual-path pressure regulating solenoid valve, an oxygen sensor, a three-layer temperature probe, a three-color audible and visual alarm, a touch screen, a pressure relief valve, a circulating cleaning water pump 17, and a steam sterilization electric valve. The PLC control cabinet 10 is fixedly installed on the vehicle body 1. Inside the PLC control cabinet 10 are a PLC controller 13 and a data storage module. The input terminals of the controller 13 are electrically connected to the output terminals of the temperature sensing probe 6 and the gas phase oxygen online sensor 4, respectively. The output terminals of the controller 13 are electrically connected to the input terminals of the compressor refrigeration unit, the input terminals of each valve, the input terminal of the circulating cleaning water pump 17, and the input terminal of the alarm unit 18, respectively.

[0143] The touch screen 14 is a 10-inch explosion-proof touch screen with an industrial-grade waterproof and dustproof screen. It has a built-in 16G storage module that can store ≥10,000 complete transport condition records. It supports exporting CSV data to a USB flash drive and uploading synchronously to the cloud via 5G. The interface is divided into a real-time monitoring interface, a parameter setting interface, a historical data query interface, and a permission login interface.

[0144] The alarm unit 18 includes an audible and visual alarm. The signal input terminal of the audible and visual alarm is electrically connected to the alarm signal output terminal of the PLC controller 13. The audible and visual alarm integrates a red, yellow, and green three-color indicator light and a buzzer. It is a three-color audible and visual alarm indicator light, where green indicates normal operating conditions, yellow indicates a first-level warning (over-temperature / mild over-oxygen), and red indicates a second-level danger interlock shutdown (severe over-temperature, high oxygen).

[0145] In this application, the high-pressure nitrogen supply device 12, control cabinet 10, refrigeration module 7, and buffer filter tank 9 are sequentially arranged on the right side of the vehicle body 1, while the power supply module 11 and the tank body 3 are sequentially arranged on the left side of the vehicle body 1. Figure 1 As shown. The PLC controller 13 has the following interlocking control logic internally:

[0146] (1) Pre-loading inspection interlock (if the standard is not met, the feed valve will be locked)

[0147] The system automatically and synchronously reads the gas phase oxygen content and the temperature of the three-layer mash in the tank; when the oxygen content is ≥0.2ppm or the temperature in the tank is >38℃, the feed solenoid valve is forcibly locked, a fault is displayed on the screen, and the yellow light remains on. The filling can only be unlocked after nitrogen purging or refrigeration precooling is started.

[0148] (2) Real-time interlock protection of operating conditions during transportation

[0149] At any temperature ≥40℃ or gaseous oxygen ≥0.5ppm, four actions are executed simultaneously: continuous red audible and visual alarm, full-load operation of the refrigeration unit, 100% increase in flow rate of the nitrogen pressure-maintaining branch, and recording of fault time and parameters in a pop-up window on the touch screen.

[0150] (3) Automatic archiving of data throughout the entire process (cannot be manually deleted or tampered with)

[0151] Automatically records the following parameter list: output plant name, receiving plant name, transfer start and end time, mash transfer volume, three-layer temperature curve, gas phase oxygen content curve, nitrogen supply pressure, operator employee number, fault alarm record, and sterilization duration; each record automatically generates a unique code and is permanently stored.

[0152] (4) Hierarchical access control

[0153] ① Operator permissions (password level 1): Start the transfer process, view real-time operating status, and export the transfer records for the day; no permission to modify parameters;

[0154] ② Process administrator privileges (password level 2): ​​Modify temperature and oxygen content alarm thresholds, adjust nitrogen stabilizing pressure, and export all historical data;

[0155] ③ Equipment administrator privileges (password level 3): calibrate sensors, repair equipment, and adjust the operating parameters of the refrigeration unit.

[0156] Preferably, the temperature measuring structure adopts a multi-point temperature sensing probe 6, with at least three multi-point temperature sensing probes 6. The three temperature sensing probes 6 are respectively set in the upper, middle and lower areas inside the tank body 3 along the vertical direction. Each layer is equipped with a PT100 high-precision temperature probe with a measurement accuracy of ±0.1℃. The temperature of the mash at different liquid levels is collected in real time, and the data is uploaded to the PLC every second. The preset standard storage temperature is 37℃, the allowable fluctuation range is 36~38℃, the first-level over-temperature warning is 39℃, and the second-level dangerous over-temperature is 40℃.

[0157] In another embodiment, the temperature measurement structure is a distributed fiber optic global temperature measurement system, which improves the temperature acquisition accuracy to ±0.05℃; a dissolved oxygen probe for mash can be added to directly monitor the dissolved oxygen index in the liquid phase.

[0158] The temperature control logic of PLC controller 13 in this application is as follows:

[0159] ①When the temperature detected by any temperature sensor probe 6 is 36-38℃, the controller 13 controls the compressor refrigeration unit to maintain a low load of 30%;

[0160] ② When any temperature sensor probe 6 detects a temperature of 38.1 to 39°C, the controller 13 controls the compressor refrigeration unit to increase its load to 70% and increases the refrigerant circulation flow.

[0161] ③ When any temperature sensor probe 6 detects a temperature ≥39℃, the controller 13 controls the compressor refrigeration unit to operate at full load with 100% rated power and drives the yellow indicator light of the audible and visual alarm to light up.

[0162] ④ When any temperature sensor probe 6 detects a temperature ≥40℃, the controller 13 simultaneously performs triple linkage protection: full load cooling (the compressor refrigeration unit operates at 100% rated power) + continuous red audible and visual alarm (the red indicator light of the audible and visual alarm is continuously lit and the buzzer is continuously sounded) + automatic increase in nitrogen replenishment flow (increases the opening degree of the tank continuous pressure maintenance branch 28 of the dual-path nitrogen pressure regulating valve group 15).

[0163] As another embodiment of the fully anaerobic nitrogen gas closed-loop protection circulation unit in this application, the following components can be replaced with equivalent components according to the actual application scenario:

[0164] (1) Replacement of nitrogen supply source: The vehicle-mounted high-pressure nitrogen cylinder can be replaced by a vehicle-mounted small liquid nitrogen vaporization device, which is suitable for large-volume, long-term continuous transportation scenarios; a small vehicle-mounted membrane separation nitrogen generator can be integrated to prepare high-purity nitrogen on site in real time.

[0165] (2) Replacement of the recovery structure: The nitrogen buffer filter tank 9 can be upgraded to an activated carbon adsorption + membrane separation purification unit, maintaining the purity of recovered nitrogen at 99.999%, further reducing the amount of new nitrogen replenishment.

[0166] (3) Gas supply control replacement: The manual pressure regulating valve in the dual-path nitrogen pressure regulating valve group 15 can replace the fully automatic proportional solenoid valve, and the gas supply flow can be steplessly adjusted according to the oxygen content and the pressure inside the tank.

[0167] As another embodiment of the double-walled sealed cold storage and transportation tank unit in this application, the following components can be equivalently replaced according to the actual application scenario:

[0168] (1) Replacement of insulation structure: The double-layer vacuum insulation tank can replace the single-layer tank with a thickened polyurethane insulation layer on the outside. It can be equipped with an external mobile chiller unit to adapt to the old vehicle renovation scenario.

[0169] (2) Sterilization structure replacement: The bottom quick-release sewage discharge sterilization composite port 31 can replace the top manhole built-in rotating spray sterilization arm to achieve 360° spray disinfection inside the tank.

[0170] As another embodiment of the aseptic rapid sealed loading and unloading unit in this application, the following components can be equivalently replaced according to the actual application scenario:

[0171] (1) Replacement of connector structure: DN65 aseptic clamp inlet and outlet connector can replace sanitary universal aseptic flange connector and quick-connect hose connector, and is suitable for different plant pipeline specifications.

[0172] (2) Pre-purge structure replacement: Independent external purging branch can be integrated into the joint body in one piece, simplifying the external pipeline layout.

[0173] In addition, the fixed threshold switch control can replace the PID adaptive intelligent adjustment algorithm, dynamically matching the cooling power and nitrogen replenishment flow rate according to the ambient temperature and transportation distance; the local USB flash drive storage can be upgraded to 5G / 4G IoT remote monitoring, and the factory central control room can view the vehicle location, transfer conditions, temperature and oxygen content curves in real time. The vehicle power matching alternative is as follows: (1) The independent 24V battery can switch the vehicle engine power take-off device, eliminating the external battery and reducing the weight of the vehicle equipment; (2) Alarm structure replacement: the three-color sound and light alarm can be upgraded to vehicle remote mobile APP message push warning, and the factory central control can receive fault reminders simultaneously.

[0174] Based on the above-mentioned vehicle-mounted integrated mash transfer equipment, this application also provides a vehicle-mounted integrated mash transfer method, including the following steps:

[0175] S1. Aseptic pretreatment of transfer tank (operation at the outgoing plant, total time 50-80 minutes).

[0176] Close all manholes, the combined drain and sterilization port 31, and the material valves. Start the circulating flushing assembly to create a closed-loop flushing system between the cleaning medium inside the tank body 3 and the circulating flushing pipeline. Then, switch the pipeline to connect the steam source to the steam spray assembly 16 inside the tank body 3, introduce saturated low-pressure steam, and spray the entire interior of the tank body 3. After sterilization, close the steam valves, allow it to cool naturally, and then drain the condensate. This step S1 specifically includes the following steps:

[0177] S11. Rinse with closed-loop circulating clean water (15 min):

[0178] Close all manholes, the combined drain and sterilization port 31, and the material valves. Start the circulating flushing assembly to make the cleaning medium (such as clean water) form a closed-loop flushing between the tank body 3 and the circulating flushing pipeline. The flushing pressure is 0.35MPa, and the wastewater is discharged through the bottom drain and sterilization port 31 until the effluent is clear and there is no mash residue, indicating that the flushing is complete.

[0179] S12. Full-area steam sterilization inside the tank (35–60 min, constant temperature and pressure 0.10–0.12 MPa):

[0180] Switch the pipeline to the steam sterilization interface, introduce 121℃ saturated low-pressure steam, maintain the pressure inside the tank at 0.10~0.12MPa, and spray steam through the atomizing nozzle 161 of the steam spray pipeline 26 to sterilize the tank body, coils, joints, and drain outlet simultaneously; the sterilization time is calculated from the time the temperature inside the tank stabilizes at 121℃, and the steam must not be turned off midway;

[0181] S13, Natural cooling and drainage (10 min):

[0182] Close the steam valve on the steam spray pipeline 26, keep the tank sealed and let it cool naturally to below 40°C, open the quick-release drain port at the bottom to drain the condensate in the tank, and complete the aseptic pretreatment of the tank.

[0183] S2, Deep nitrogen purging and precooling of the tank (20 min)

[0184] The refrigeration module 7 is activated, and the refrigerant circulates within the heat exchange module 8 to pre-cool the tank body 3. The tank continuous pressure-maintaining branch 28 of the dual-path nitrogen pressure-regulating valve group 15 is opened, allowing nitrogen to continuously flow upward from the bottom drain sterilization composite port 31 into the top of the tank body 3, achieving layered nitrogen purging and replacement from bottom to top, with a small exhaust gap reserved at the top manhole. The online gas phase oxygen sensor 4 at the top monitors the gas phase oxygen content in real time and uploads the data to the control module. After purging continues until the gas phase oxygen content reaches the standard, the top exhaust gap is closed to maintain a slight positive pressure of 0.02 MPa inside the tank. This step S2 specifically includes the following steps:

[0185] S21. Start the on-board refrigeration unit to pre-cool the tank:

[0186] The refrigeration unit operates at 70% load, with three temperature probes monitoring the environment inside the tank until the overall temperature inside the tank drops to 37°C, at which point it maintains a constant temperature and is ready to go.

[0187] S22, Bottom-up stratified nitrogen purging and replacement:

[0188] Open the nitrogen pressure-maintaining branch (branch B), and high-purity nitrogen is continuously introduced upward from the bottom sewage discharge port. A small exhaust gap is reserved in the top manhole. The gas phase oxygen online sensor 4 at the top (i.e., oxygen sensor or gas phase oxygen content online sensor) monitors the gas phase oxygen content in real time and automatically records the reading every 1 minute. Continue purging until the oxygen content is stable at <0.2ppm in 3 consecutive samplings, and the replacement is deemed qualified.

[0189] S23. Seal and lock the tank body to establish a pre-slight positive pressure:

[0190] Close the top manhole vent gap, maintain nitrogen pressure at 0.02MPa for continuous supply, and establish an oxygen-free micro-positive pressure atmosphere inside the tank to prevent air from seeping in backwards.

[0191] S3. Sealed aseptic filling of mature seed mash (10-25 min, adjust according to transport volume)

[0192] Tighten the clamp-on inlet / outlet connector to the outlet pipeline of the stable fermentation tank in the output plant area using clamps; open the pre-purge branch 27 and continuously flush the trapped air inside the connector with nitrogen; after the oxygen content of the connector branch reaches the standard, slowly open the outlet valve of the fermentation tank, and use the fermentation tank's own pressure to pressurize the mature anaerobic mash into the main body of the tank 3. Throughout the filling process, the tank's continuous pressure-maintaining branch 28 continuously replenishes nitrogen, and the control module maintains a slight positive pressure of 0.02 MPa inside the tank; this step S3 specifically includes the following steps:

[0193] S31. Aseptic connector mating:

[0194] Tighten the sanitary-grade sterile quick-clamp inlet / outlet connector to the outlet pipeline of the stable fermentation tank in the output plant area to achieve a physical seal;

[0195] S32. Nitrogen pre-purging of joint gaps (3 min):

[0196] Start the pre-purge branch 27 (branch A), continuously flush the air trapped inside the connector with 0.15MPa nitrogen, and the 3-minute countdown on the touch screen ends. The gas phase oxygen online sensor 4 (oxygen sensor) confirms that the oxygen content of the connector branch meets the standard.

[0197] S33, Closed-loop pressure filling of mash:

[0198] Slowly open the discharge valve of the fermenter and rely on the pressure of the fermenter itself to seal and press the mature anaerobic mash into the transfer tank; throughout the filling process, branch B continuously adds a small amount of nitrogen to maintain a stable positive pressure of 0.02MPa inside the tank and monitor the gas phase oxygen in real time to ensure it does not exceed 0.2ppm.

[0199] S34. Sealing and isolation after filling:

[0200] After reaching the target transfer volume, the discharge valve and nitrogen pre-purge branch 27 are closed in sequence, the feed clamp is removed, and the joint protection cover is sealed, ensuring that the mash is not exposed throughout the entire process.

[0201] S4. Same-city road transport with constant temperature and anaerobic protection throughout the entire process (30-60 min).

[0202] During operation, multi-point temperature sensor 6 collects real-time temperature data of the upper, middle, and lower layers inside the tank and uploads it to the control module (controller 13). Online gas phase oxygen sensor 4 collects real-time gas phase oxygen content data and uploads it to the control module. The control module automatically adjusts the refrigeration load based on the temperature. The tank's continuous pressure-maintaining branch 28 continuously replenishes a small amount of gas. When the temperature sensor 6 or oxygen sensor detects an abnormality, the control module automatically executes a linkage protection mechanism that increases refrigeration power, increases nitrogen flow, and triggers an alarm. This step S4 specifically includes the following steps:

[0203] S41, Automatic Driving Status Adjustment

[0204] The vehicle-mounted refrigeration unit continuously controls the temperature in a closed loop. The three-layer temperature sensor probe 6 uploads data in real time. The PLC automatically adjusts the refrigeration load according to the temperature and can adjust the operating load of the refrigeration module 7 and the valve opening of the heat exchange module 8. The nitrogen branch B continuously replenishes a small amount of gas. The nitrogen circulation recovery buffer filter tank 9 (buffer tank) recovers and replaces the nitrogen, and the depressurized nitrogen is recycled and reused. That is, the gas phase return port at the top of the tank body 3 introduces the exhaust gas into the nitrogen circulation recovery buffer filter tank 9, and after filtration, it is reconnected to the dual-path nitrogen pressure regulating valve group 15 for recycling.

[0205] S42. Real-time automatic intervention for anomalies

[0206] If the temperature or oxygen content exceeds the standard during transportation, the system will automatically increase the cooling power, increase the nitrogen flow, and trigger audible and visual alarms, while simultaneously recording all parameter curves for the fault period.

[0207] S43. Pre-arrival self-inspection at the factory area

[0208] Once the vehicle enters the designated unloading area of ​​the receiving plant, the system automatically locks the current operating data, and the touch screen pops up to display the temperature and oxygen content curves throughout the process. Only after the operator confirms that there are no excessive faults can the unloading process begin.

[0209] S5. Pre-replacement and sealed unloading of pipelines in the receiving plant area (15-30 min)

[0210] Tightly seal the discharge connector (discharge clamp connector) of the main body 3 of the tank to the feed pipeline of the decay fermentation tank in the receiving plant area; open the pre-purge branch 27 to replace the air in the joint gap; maintain a slight positive pressure of 0.02 MPa nitrogen in the tank, slowly open the discharge valve, and rely on the nitrogen pressure in the tank to transport the high-activity seed mash into the decay fermentation tank in a closed manner. Throughout the discharge process, nitrogen is continuously replenished through the tank continuous pressure-maintaining branch 28; after all the mash has been transported, close the discharge valve and the valve of the tank continuous pressure-maintaining branch 28; this step S5 specifically includes the following steps:

[0211] S51, Aseptic connector for unloading

[0212] The discharge clamp of the transfer tank (tank body 3) is locked and sealed with the feed pipeline of the decay fermentation tank;

[0213] S52, Nitrogen pre-purging of unloading joint (3 min)

[0214] Open the pre-purge branch 27 to replace the air in the joint gap. Only after the oxygen content reaches the standard can the unloading valve be opened.

[0215] S53, Micro-positive pressure closed unloading and inoculation

[0216] Maintain a slight positive pressure of 0.02MPa nitrogen inside the tank, slowly open the unloading valve, and rely on the nitrogen pressure inside the tank to seal and transport the highly active seed mash to the inside of the decay fermentation tank; continuously replenish nitrogen at a small flow rate throughout the unloading process to prevent air from entering the tank and fermentation tank pipeline;

[0217] S54, Unloading completed, pipeline isolation

[0218] After all the mash has been delivered, close the discharge valve and nitrogen branch, remove the clamp joint, and seal for protection.

[0219] S6. Disinfect the tank in situ after transfer (to prevent cross-contamination, 40-70 minutes).

[0220] After unloading, the circulating flushing assembly is restarted to clean the inside of the tank body 3, and the inside of the tank body 3 is steam sterilized by the steam spray assembly 16. Then, the tank is emptied and dried to keep it in a sterile standby state.

[0221] S61, Clean water circulation rinsing

[0222] Start the vehicle-mounted circulating cleaning water pump 17 to flush the tank, coils, and pipelines in a closed loop, and drain the residual mash.

[0223] S62, High-temperature steam in-situ sterilization

[0224] Connect to the steam pipeline at 25°C and sterilize with saturated steam for 35 minutes to completely kill any residual bacteria and miscellaneous bacteria in the tank and eliminate the risk of cross-contamination between different plant areas.

[0225] S63, Exhaust and dry standby

[0226] After sterilization, the tank is cooled down and the condensate is drained. The tank is kept under a slight nitrogen seal and awaits the next transport mission.

[0227] S7. Data archiving and retention

[0228] Operators log in with administrator privileges, export complete operational data for this transfer, back it up locally to a USB drive, and then upload and archive it to the factory cloud, completing the entire cross-factory transfer and inoculation operation.

[0229] This application has at least the following advantages:

[0230] (1) Double-layer vacuum jacket + vehicle-mounted independent compression refrigeration three-layer temperature measurement closed-loop temperature control, the bacterial cell activity retention rate is increased to over 90%.

[0231] Existing water trucks lack refrigeration, resulting in a 6-9°C temperature rise during transport and a 90% loss of viable bacteria. General chemical tanks also lack onboard refrigeration, causing continuous temperature drift during transport. This application addresses these issues by using vacuum insulation to block environmental heat sources and providing independent onboard refrigeration with real-time dynamic adjustment, maintaining a stable mash temperature of 37±1°C throughout the process and significantly inhibiting high-temperature autolysis of bacteria. After inoculation, the fermentation tank recovers stable alcohol production within 12-24 hours, eliminating the need for multi-stage bacterial expansion. By integrating a double-layer vacuum polyurethane insulated tank, an independent onboard self-powered compressor refrigeration unit, and a three-layer multi-point temperature measurement PLC closed-loop constant temperature control system for anaerobic mash transport, this application solves the core industry pain points of existing transport equipment lacking onboard constant temperature systems and causing significant inactivation of Clostridium ethanolans due to temperature rise during mash transport.

[0232] Principle: A 50mm vacuum polyurethane jacket isolates the tank from sunlight and high ambient temperatures; a heat exchange coil covering the entire tank wall quickly removes the heat generated by the mash metabolism; three-layer multi-point temperature measurement eliminates temperature blind spots; PLC dynamically adjusts the cooling load, and temperature fluctuations are strictly controlled within ±1℃.

[0233] (2) Three-stage nitrogen micro-positive pressure protection + joint pre-purge + online oxygen interlock, the gas phase oxygen in the tank is stable at <0.2ppm, which meets the strict anaerobic requirements.

[0234] Existing water trucks use single-pass replacement and open-top loading / unloading, resulting in extremely high dissolved oxygen levels after transfer. General-purpose transfer tanks require no in-transit gas replenishment or joint purging. This application addresses the entire process of loading, transporting, and unloading with graded nitrogen protection. Pre-purge before joint connection eliminates trapped air, and a continuous 0.02MPa micro-positive pressure inside the tank prevents negative pressure intake. If the oxygen sensor exceeds the limit, the nitrogen flow is automatically increased and an alarm is triggered. This dual hardware and process isolation of oxygen significantly reduces the lysis and mortality rate of anaerobic bacteria. Through a three-stage, dual-branch nitrogen micro-positive pressure anaerobic protection system (loading-transfer-unloading), coupled with an independent pre-purge branch at the joint, online gas phase oxygen sensing and linkage for gas replenishment at the top, and a closed-loop nitrogen recovery buffer filter unit (buffer filter tank), the entire process maintains an ultra-low oxygen environment of <0.2ppm gas phase oxygen, suitable for long-distance transport and preservation of strictly anaerobic fermentation mash using CO syngas.

[0235] Principle: Dual independent nitrogen pressure regulating branches supply gas separately, real-time monitoring and linkage of gas phase oxygen replenishment, sterile clamp seals eliminate open air intake channels, and the entire system has no oxygen intrusion channels.

[0236] (3) Nitrogen circulation and recovery buffer filtration unit reduces nitrogen consumption by 60%, significantly reducing long-term transportation and operation costs.

[0237] Existing technologies directly vent all nitrogen during replacement and depressurization, resulting in a large nitrogen consumption per transfer. This application collects, filters, and recycles all exhaust gas, with only a small amount of gas being discharged during extreme overpressure, significantly reducing the procurement and consumption of high-purity nitrogen.

[0238] Principle: The gas phase reflux pipeline is equipped with a buffer filter tank. After recovering nitrogen to remove volatile impurities from the mash, it is reconnected to the pressure regulating system for closed-loop circulation.

[0239] (4) Mirror-polished tank body + quick-release drain and sterilization port with snap fasteners + vehicle-mounted circulating flushing / steam spraying, completely eliminating the risk of cross-contamination and contamination during transfer.

[0240] Existing sprinkler trucks and general-purpose transfer tanks have a welded and fixed structure, which makes it impossible to thoroughly clean and disinfect dead corners. This application features a 316L inner liner with a full arc and no dead corners, and a quick-release sewage and sterilization composite port at the bottom for easy disassembly and cleaning. The tank body has a built-in full-area steam spray pipeline to achieve in-situ high-temperature sterilization. When transferring mash from different plant areas, there are no residual bacteria or miscellaneous bacteria. After inoculation, the contamination rate of the fermentation tank decreases by more than 70%, effectively eliminating the risk of cross-contamination of miscellaneous bacteria and bacterial strains caused by the transfer of mash between different plant areas.

[0241] Principle: The detachable snap-fit ​​structure eliminates welded dead corners where dirt can accumulate, and the closed-loop rinsing combined with full-area steam spray achieves 100% coverage sterilization of the tank.

[0242] (5) Dedicated explosion-proof PLC multi-level interlocking control system, automatic intervention in abnormal working conditions, and permanent traceability of data throughout the entire process.

[0243] Existing equipment lacks automatic monitoring and data recording, and malfunctions can only be handled manually afterward. This application collects temperature and oxygen content dual parameters in real time, automatically adjusts cooling and increases nitrogen levels when exceeding the limits, and provides audible and visual warnings to protect the mash culture in advance. Each transfer record is automatically stored, containing complete curves and operator information. When fermentation indicators are abnormal, the entire transfer process can be completely traced back, which is compatible with the requirements of bio-fermentation GMP audit and safety production ledger.

[0244] Principle: It is equipped with a dedicated control program for CO anaerobic fermentation, with sensor hardware and actuators working together, dual backup of local storage and cloud, and hierarchical access control to prevent human tampering with data.

[0245] (6) Direct feeding and inoculation of mature mash shortens the recovery cycle of declining tanks from 72-120 hours to less than 24 hours, significantly reducing production capacity and raw material loss.

[0246] Traditional decay tanks require emptying, cleaning, sterilization, and three-stage microbial culture, resulting in a 3-5 day downtime. This application directly replenishes the decay tank with highly active mature mash, eliminating the need to empty the original ineffective mash, clean, and undergo multi-stage microbial culture. The microorganisms quickly resume ethanol metabolism, significantly shortening the production line downtime and restart cycle. Downtime is reduced by more than 90%, avoiding a large waste of raw materials, water, electricity, and labor.

[0247] Principle: The mature mash contains a sufficient amount of active Clostridium ethanolans, eliminating the need for the laboratory strain propagation and domestication process. Low-temperature anaerobic transport maximizes the preservation of bacterial metabolic activity.

[0248] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A vehicle-mounted integrated mash transfer device, characterized in that, include: The vehicle body and the sealed storage and transportation tank unit, constant temperature refrigeration and temperature control unit, full-process anaerobic nitrogen sealed protection circulation unit, aseptic rapid sealed loading and unloading unit, and automatic control unit are installed on the vehicle body; The sealed storage and transportation tank unit includes a tank body and a circulating flushing assembly. The tank body is provided with an insulation structure inside or outside. The bottom and top of the tank body are respectively provided with a sewage discharge and sterilization composite port and a manhole. The tank body is provided with a steam spray assembly inside. The circulating flushing assembly is used to connect to one interface of the sewage discharge and sterilization composite port to clean the tank body. The constant temperature refrigeration and temperature control unit includes a refrigeration module and a heat exchange module. The refrigeration module is located on the side of the main body of the tank. The heat exchange module is connected to the refrigeration module and is disposed on the inner wall of the main body of the tank. A temperature measuring structure is disposed inside the main body of the tank. The fully anaerobic nitrogen closed-loop protection circulation unit includes a high-pressure nitrogen supply device, a dual-path nitrogen pressure regulating valve group, an online gas phase oxygen sensor, and a nitrogen circulation recovery buffer filter tank. The gas outlet of the high-pressure nitrogen supply device is connected to the inlet of the dual-path nitrogen pressure regulating valve group. The outlet of the dual-path nitrogen pressure regulating valve group is connected to a pre-purge branch and a continuous pressure-maintaining branch of the tank body, respectively. The continuous pressure-maintaining branch of the tank body is connected to the gas phase space at the top of the tank body. The online gas phase oxygen sensor is installed in the gas phase area of ​​the manhole. The gas phase reflux port at the top of the tank body is connected to the inlet of the buffer filter tank through a third pipeline. The outlet of the buffer filter tank is connected to the inlet of the dual-path nitrogen pressure regulating valve group through a fourth pipeline. A pressure relief valve is installed at the top of the tank body. The pressure relief valve's exhaust outlet is connected to the buffer filter tank through a fifth pipeline. The aseptic rapid sealed loading and unloading unit includes an inlet / outlet connector and a pre-purge branch. Each inlet / outlet connector is connected in parallel with a separate pre-purge branch. The inner port of the inlet / outlet connector is connected to the inlet / outlet of the tank body, and the outer port is used for detachable connection with the pipeline of the fermentation tank in the plant area. The air inlet of the pre-purge branch is connected to the air outlet of the dual-path nitrogen pressure regulating valve group, and the air outlet of the pre-purge branch is located inside the inlet / outlet connector. The automatic control unit includes a control module and an alarm unit connected to the control module. The control module is also connected to a steam spray assembly, a refrigeration module, a heat exchange module, a high-pressure nitrogen supply device, a dual-path nitrogen pressure regulating valve group, a gas phase oxygen online sensor, and a pressure safety relief valve.

2. The vehicle-mounted integrated mash transfer device according to claim 1, characterized in that, The vehicle body is a box-type sprinkler truck chassis, with a cab at the front; The insulation structure is a polyurethane insulation layer disposed on the outer wall of the main body of the tank; The circulating flushing assembly includes a circulating cleaning water pump. The inlet of the circulating cleaning water pump is connected to an interface of the sewage discharge and sterilization composite port through a first pipeline, and the outlet of the circulating cleaning water pump is connected to a flushing port provided at the manhole through a second pipeline.

3. The vehicle-mounted integrated mash transfer equipment according to claim 1, characterized in that, The main body of the tank includes an inner tank and an outer tank. The insulation structure is a vacuum insulation interlayer formed between the inner tank and the outer tank. The interior of the vacuum insulation interlayer is filled with high-density polyurethane foam insulation material. Both the inner and outer tanks are made of 316L stainless steel. The manhole is sealed with a cover plate, which integrates five sets of through-hole installation channels, namely, nitrogen main inlet, oxygen sensor mounting base, temperature probe wiring port, nitrogen gas phase reflux port, and pressure relief valve mounting position.

4. The vehicle-mounted integrated mash transfer device according to claim 2 or 3, characterized in that, The steam spray assembly includes a steam spray pipeline and multiple atomizing nozzles. The steam spray pipeline is arranged in a ring around the inner wall of the tank body, and multiple spray holes are spaced apart on the steam spray pipeline. Each spray hole is equipped with a corresponding atomizing nozzle. The sewage discharge and sterilization composite port has a snap-on quick-release structure. The first interface of the sewage discharge and sterilization composite port is connected to the interior of the tank body. The second interface of the sewage discharge and sterilization composite port is used to connect to the external sewage discharge pipeline or the inlet of the circulating cleaning water pump. The third interface of the sewage discharge and sterilization composite port is connected to the steam pipeline. The steam pipeline is used to connect to the external steam source in the plant area and is connected to the spray inlet of the steam spray assembly.

5. The vehicle-mounted integrated mash transfer device according to claim 1, characterized in that, The refrigeration module is a vehicle-mounted compressor refrigeration unit or a vehicle-mounted dry ice cold storage and insulation board system, and is equipped with a power supply module; The heat exchange module is a refrigeration heat exchange coil, which is spirally wrapped around and attached to the inner wall of the tank body.

6. The vehicle-mounted integrated mash transfer device according to claim 1, characterized in that, The temperature measuring structure employs a multi-point temperature sensing probe, with at least three probes. These three probes are vertically positioned in the upper, middle, and lower regions inside the main body of the tank.

7. The vehicle-mounted integrated mash transfer equipment according to claim 1, characterized in that, The high-pressure nitrogen supply device includes two sets of nitrogen cylinders, which are fixed to the vehicle body by a vehicle-mounted bracket; The buffer filter can is equipped with a double-layer filter element consisting of non-woven fabric and activated carbon. The outlet of the dual-path nitrogen pressure regulating valve group is connected to two independent gas supply branches. One gas supply branch is the pre-purging branch, whose outlet is connected to the inlet / outlet connector. The other gas supply branch is the tank continuous pressure holding branch, whose outlet is connected to the gas phase space at the top of the tank body, for continuously replenishing a small amount of gas into the tank.

8. The vehicle-mounted integrated mash transfer device according to claim 1, characterized in that, The control module includes a control cabinet and a touch screen. The control cabinet is mounted on the vehicle body, and the touch screen is mounted on the cabinet of the control cabinet or independently mounted in the driver's cab of the vehicle body. The touch screen is bidirectionally connected to the controller on the control cabinet. The touch screen has a built-in storage module and a human-machine interface. The alarm unit is located at the top center of the vehicle body or at the top of the control cabinet.

9. The vehicle-mounted integrated mash transfer device according to claim 1, characterized in that, It also includes safety auxiliary support units, which include vehicle-mounted fire extinguishing device, tank electrostatic grounding clamp, pipeline anti-vibration fixing bracket, nitrogen leak detection alarm, and steam pipeline heat insulation and anti-scalding protective sleeve. The control module is also connected to the central control room via a communication module.

10. A vehicle-mounted integrated method for transporting mash, characterized in that, The vehicle-mounted integrated mash transfer device according to any one of claims 1-9 includes the following steps: S1. Aseptic pretreatment of transfer tank Close all manholes, the combined drain and sterilization port, and the material valves. Start the circulating flushing assembly to create a closed-loop circulation of the cleaning medium between the tank body and the circulating flushing pipeline. Then, switch the pipeline to connect the steam source to the steam spray assembly inside the tank body, introduce saturated low-pressure steam, and spray the entire interior of the tank body. After sterilization, shut off the valves, allow the tank to cool naturally, and then drain the condensate. S2, Deep Nitrogen Replacement and Precooling of Tank The refrigeration module is activated, and the refrigerant circulates within the heat exchange module to pre-cool the tank body. The tank's continuous pressure-maintaining branch of the dual-path nitrogen pressure-regulating valve group is opened, allowing nitrogen to continuously flow upwards from the bottom drain and sterilization port into the top of the tank body, achieving layered nitrogen purging and replacement from bottom to top. A small exhaust gap is reserved at the top manhole. The online gas phase oxygen sensor at the top monitors the gas phase oxygen content in real time and uploads the data to the control module. After purging continues until the gas phase oxygen content reaches the standard, the top exhaust gap is closed to maintain a slight positive pressure of 0.02 MPa inside the tank. S3, Sealed aseptic filling of mature seed mash Secure the inlet and outlet connectors to the outlet pipeline of the stable fermentation tank in the output plant area with clamps; open the pre-purge branch and continuously flush the trapped air inside the connector with nitrogen; after the oxygen content of the connector branch reaches the standard, slowly open the outlet valve of the fermentation tank and use the fermentation tank's own pressure to pressurize the mature anaerobic mash into the main body of the tank. Throughout the filling process, the tank's continuous pressure-maintaining branch continuously replenishes nitrogen, and the control module maintains a slight positive pressure of 0.02MPa inside the tank. S4, same-city road transport with constant temperature and anaerobic protection throughout the entire process. During the journey, the temperature sensor probe uploads temperature data in real time, and the control module automatically adjusts the refrigeration load according to the temperature; the tank's continuous pressure-maintaining branch continuously replenishes a small amount of gas; when the temperature sensor probe or oxygen sensor detects an abnormality, the control module automatically implements linkage protection such as increasing refrigeration power, increasing nitrogen flow, and alarm. S5, Receiving plant area pipeline pre-replacement and closed unloading inoculation Tightly seal the discharge connector of the main body of the tank to the feed pipeline of the decay fermentation tank in the receiving plant area; open the pre-purge branch to replace the air in the joint gap; maintain a slight positive pressure of 0.02 MPa nitrogen in the tank, slowly open the discharge valve, and rely on the nitrogen pressure in the tank to transport the high-activity seed mash into the decay fermentation tank in a closed manner. Throughout the discharge process, nitrogen is continuously replenished through the tank's continuous pressure-maintaining branch; after all the mash has been transported, close the discharge valve and the valve of the tank's continuous pressure-maintaining branch. S6. Disinfection of the tank in situ after transfer. After unloading, the circulating flushing assembly is restarted to clean the inside of the tank body, and the steam spray assembly is used to sterilize the inside of the tank body with steam. Then, the tank body is emptied and dried to keep it in a sterile and ready-to-use state. S7. Data archiving and retention Operators log in with administrator privileges, export complete operational data for this transfer, and complete the entire cross-plant transfer and inoculation operation.

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