Ultrahigh-temperature aerobic fermentation system and fermentation process

Abstract

The invention relates to an ultrahigh-temperature aerobic fermentation system and a fermentation process, and the fermentation system comprises a fermentation bin, and also comprises a gas separation device and a photobioreactor; the gas separation device is communicated with the fermentation bin and is used for sequentially carrying out component separation on waste gas generated by fermentation in the fermentation bin; the photobioreactor is communicated with the downstream of the gas separation device along the gas flow direction, photosynthetic microorganisms are distributed in the photobioreactor, and the photosynthetic microorganisms can absorb carbon dioxide and ammonia gas separated by the gas separation device and generate oxygen; and the photobioreactor is also communicated with the fermentation bin so as to supply oxygen generated by the photosynthetic microorganisms to the fermentation bin. The ultrahigh-temperature aerobic fermentation system has the beneficial effects that the treatment mode of the ultrahigh-temperature aerobic fermentation system on the fermentation waste gas is ecological and environment-friendly, the emission of greenhouse gas is reduced, the energy consumption is low, and meanwhile, the cyclic utilization of waste gas resources is realized.

Description

Technical Field

[0001] The present invention relates to the field of fermentation technology, and in particular to an ultra-high temperature aerobic fermentation system and a fermentation process. Background Art

[0002] The ultra-high temperature aerobic fermentation system is an advanced organic waste treatment technology that utilizes the activities of microorganisms under specific conditions (such as temperature, humidity, oxygen supply, etc.) to accelerate the decomposition process of organic matter. This fermentation method is usually carried out in an environment with a temperature higher than that of traditional composting, and the reaction temperature is often above 80°C, so it is called "ultra-high temperature". The steam generated by fermentation is a mixture, mainly including water vapor, ammonia, carbon dioxide, hydrogen sulfide, and volatile organic compounds (VOCs), etc. If the steam is directly discharged, it will pollute the environment and exacerbate the greenhouse effect.

[0003] For the waste gas generated during the ultra-high temperature aerobic fermentation process, the current typical treatment process is "spray washing + biological filtration", that is, most of the ammonia or hydrogen sulfide in the waste gas is neutralized by spraying an acidic or alkaline solution to reduce the subsequent biological treatment load, and then the remaining waste gas enters a biological filter or trickling filter for microbial degradation. The initial equipment cost of the initial equipment such as the spray tower and circulation pump in this scheme is relatively high, and a large amount of circulating water is required in the spray section, and the circulation pump and fan consume a large amount of energy. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an ultra-high temperature aerobic fermentation system and a fermentation process, which solve the technical problem that the existing ultra-high temperature aerobic fermentation system has improper waste gas treatment, resulting in high energy consumption for waste gas treatment.

[0006] (II) Technical Solutions

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] In the first aspect, an embodiment of the present invention provides an ultra-high temperature aerobic fermentation system, which includes a fermentation chamber, and also includes a gas separation device and a photobioreactor;

[0009] The gas separation device is connected to the fermentation chamber and is used to sequentially separate the components of the waste gas generated by the fermentation in the fermentation chamber;

[0010] The photobioreactor is connected to the downstream of the gas separation device along the gas flow direction. Photosynthetic microorganisms are distributed in the photobioreactor, and the photosynthetic microorganisms can absorb carbon dioxide and ammonia separated by the gas separation device and generate oxygen;

[0011] The photobioreactor is also connected to the fermentation tank to supply the oxygen produced by the photosynthetic microorganisms to the fermentation tank.

[0012] Optionally, for the ultra-high temperature aerobic fermentation system, the gas separation device sequentially includes a connected filter, an adsorption device, and a gas-liquid separator along the gas flow direction;

[0013] The filter is used to remove dust in the waste gas;

[0014] The adsorption device is used to remove hydrogen sulfide and volatile organic compounds in the waste gas;

[0015] The gas-liquid separator is provided with a first outlet, the first outlet is connected to the photobioreactor, and the gas-liquid separator can separate carbon dioxide and ammonia, and the carbon dioxide and ammonia are introduced into the photobioreactor through the first outlet.

[0016] Optionally, for the ultra-high temperature aerobic fermentation system, it further includes a heat exchanger;

[0017] The gas-liquid separator further includes a second outlet, and the second outlet is connected to the heat exchanger;

[0018] The gas-liquid separator can also separate water vapor, and the water vapor enters the heat exchanger through the second outlet for heat exchange to recover the heat in the waste gas generated by the fermentation of the fermentation tank.

[0019] Optionally, for the ultra-high temperature aerobic fermentation system, the heat exchanger includes a heat exchange tube and a liquid inlet and a liquid outlet located at both ends of the heat exchange tube;

[0020] An auxiliary heating tube is provided on the side wall of the fermentation tank;

[0021] The liquid outlet of the heat exchanger is connected to the inlet of the auxiliary heating tube, and the outlet of the auxiliary heating tube is connected to the liquid inlet of the heat exchanger.

[0022] Optionally, for the ultra-high temperature aerobic fermentation system, the gas-liquid separator is a membrane separator provided with a selective permeable membrane.

[0023] Optionally, for the ultra-high temperature aerobic fermentation system, the photosynthetic microorganism is Chlorella vulgaris;

[0024] The initial inoculation density of Chlorella vulgaris contains 1×10 6 -5×10 6 cells per milliliter of culture solution.

[0025] Optionally, for the ultra-high temperature aerobic fermentation system, it further includes a blower;

[0026] The fermentation tank is provided with an aeration pipeline, and the blower is connected to both the aeration pipeline and the photobioreactor at the same time;

[0027] The oxygen generated by the photosynthetic microorganisms is sent into the fermentation tank through the blower and the aeration pipeline.

[0028] Optionally, in the ultra-high temperature aerobic fermentation system, the filter is a bag filter and / or a cartridge filter;

[0029] An activated carbon adsorption material is arranged inside the adsorption device on the cross-section of the gas flow direction.

[0030] In a second aspect, an embodiment of the present invention provides an ultra-high temperature aerobic fermentation process, which uses the aforementioned ultra-high temperature aerobic fermentation system, and includes the following steps:

[0031] y S1. Preheat the fermentation material in the fermentation tank, start the aerobic fermentation process, and collect the waste gas generated by fermentation;

[0032] S2. Feed the collected waste gas into a gas separation device, and successively perform dust removal, removal of hydrogen sulfide and volatile organic compounds, and separation of carbon dioxide and ammonia from water vapor;

[0033] S3. Feed the separated carbon dioxide and ammonia into the photobioreactor. The photobioreactor absorbs and utilizes carbon dioxide and ammonia and releases oxygen; then the released oxygen is transported to the fermentation tank in S1 to assist the oxygen fermentation process.

[0034] Optionally, in the ultra-high temperature aerobic fermentation process, after S2, the separated water vapor is subjected to waste heat recovery, and the recovered heat is used to preheat the fermentation material in the fermentation tank in S1.

[0035] (III) Beneficial effects

[0036] The beneficial effects of the present invention are as follows: For an ultra-high temperature aerobic fermentation system and fermentation process of the present invention, since the ultra-high temperature aerobic fermentation system uses a gas separation device to separate the components of the waste gas generated by fermentation in the fermentation tank, and then fixes the separated carbon dioxide and ammonia through a photobioreactor. The photobioreactor releases oxygen, and the oxygen is recycled to the fermentation tank to provide oxygen for aerobic fermentation, forming a closed loop. The photosynthesis involving carbon dioxide promotes the biological accumulation of carbon sources, and at the same time can promote the absorption of ammonia by organisms, reduce greenhouse gas emissions, and reduce the nitrogen source input to organisms. The oxygen generated by photosynthesis effectively increases the oxygen content in the fermentation tank, reduces the frequency of aerobic aeration during fermentation, and thus reduces the aeration energy consumption. Compared with the prior art, the treatment method of the fermentation waste gas by the ultra-high temperature aerobic fermentation system of the present invention is environmentally friendly, reduces greenhouse gas emissions, has low energy consumption, and at the same time realizes the recycling of waste gas resources. Description of the drawings

[0037] Figure 1 Schematic diagram of Embodiment 1 of a super-high temperature aerobic fermentation system and a fermentation process of the present invention.

[0038]

Explanation of reference numerals

[0039] 1: Fermentation tank; 2: Gas separation device; 3: Filter; 4: Adsorption device; 5: Pipeline; 6: Gas-liquid separator; 8: Heat exchanger; 9: Liquid outlet; 11: Collection device; 12: Liquid inlet; 14: Photobioreactor; 16: Blower; 17: Aeration pipeline; 18: Fermentation material. Detailed implementation manners

[0040] In order to better understand the above technical solutions, the exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and the scope of the present invention can be fully conveyed to those skilled in the art.

[0041] Embodiment 1:

[0042] Referring to Figure 1 , this embodiment provides a super-high temperature aerobic fermentation system, which specifically includes a fermentation tank 1 for completing the super-high temperature aerobic fermentation process. In addition, it also includes a gas separation device 2 and a photobioreactor 14; the gas separation device 2 is connected to the fermentation tank 1 and is used to sequentially separate the components of the waste gas generated by the fermentation in the fermentation tank 1. The photobioreactor 14 is connected to the downstream of the gas separation device 2 along the gas flow direction. Photosynthetic microorganisms are distributed in the photobioreactor 14, and the photosynthetic microorganisms can absorb carbon dioxide and ammonia separated by the gas separation device 2 and produce oxygen. The photobioreactor 14 is also connected to the fermentation tank 1 to supply the oxygen produced by the photosynthetic microorganisms to the fermentation tank 1. The carbon dioxide and ammonia generated by the super-high temperature aerobic fermentation are introduced into the photobioreactor 14, and the photobioreactor 14 releases oxygen, and the oxygen is recycled to the fermentation tank 1 to provide oxygen for aerobic fermentation, forming a closed loop. The treatment method of the fermentation waste gas is environmentally friendly and energy-consuming, and at the same time realizes the recycling of waste gas resources.

[0043] Referring to Figure 1, this embodiment provides a ultra-high temperature aerobic fermentation system. The gas separation device 2 sequentially includes a connected filter 3, an adsorption device 4, and a gas-liquid separator 6 along the gas flow direction. The filter 3 is used to remove dust in the waste gas. The filter 3 is a bag filter 3 or a cartridge filter 3, or a combination of a bag filter 3 and a cartridge filter 3; among them, the bag filter 3 usually uses filter bags as the filtering medium, and the filter bags are installed on the support cage. When the dust-containing gas or liquid passes through the filter bag, the particulate matter is blocked on the outer surface of the filter bag to form a filter cake, and the purified air flow is discharged through the filter bag. The cartridge filter 3 uses a cylindrical filter element (cartridge), and the inside of the cartridge is usually a corrugated filtering material, which can increase the filtering area. The dust-containing gas or liquid flows from the outside to the inside, and the particulate matter is captured outside the cartridge. When the bag filter 3 and the cartridge filter 3 are used in combination, the bag filter 3 is set upstream in the gas flow direction, and the cartridge filter 3 is set after the bag filter 3, and the waste gas is filtered twice to ensure the filtering effect.

[0044] The adsorption device 4 is used to remove hydrogen sulfide and volatile organic compounds in the waste gas. Among them, activated carbon adsorption materials are arranged in the adsorption device 4 on the cross-section along the gas flow direction, and the activated carbon adsorption materials adsorb hydrogen sulfide and volatile organic compounds, and the activated carbon adsorption materials can be replaced regularly. As a porous material, activated carbon has a wide range of adsorption properties and can effectively remove various pollutants in the waste gas, including hydrogen sulfide and volatile organic compounds. However, for carbon dioxide and ammonia, the adsorption capacity of activated carbon is relatively weak, so carbon dioxide and ammonia are separated from hydrogen sulfide and volatile organic compounds.

[0045] The gas-liquid separator 6 is mainly used to separate the moisture in the waste gas from carbon dioxide and ammonia. Specifically, the gas-liquid separator 6 is provided with a membrane separator with a selective permeable membrane. Among them, the membrane material used can allow water vapor to pass through, while other gases (such as carbon dioxide and ammonia) are relatively difficult to pass through, so as to separate the moisture from carbon dioxide and ammonia. The gas-liquid separator 6 is provided with a first outlet, and the first outlet is connected to the photobioreactor 14. The gas-liquid separator 6 can separate carbon dioxide and ammonia, and carbon dioxide and ammonia are introduced into the photobioreactor 14 through the first outlet. At the same time, the photosynthesis involving carbon dioxide can promote the absorption of ammonia by organisms.

[0046] The filter 3, the adsorption device 4, and the gas-liquid separator 6 are arranged in sequence. Through the cooperation of simple equipment, the component separation of the waste gas is realized. Compared with the method of treating the waste gas by spraying acidic or alkaline solutions, this solution has a simple structure and lower energy consumption. The filter 3, the adsorption device 4, and the gas-liquid separator 6 are all connected to each other through pipelines. Regarding the working structures of the filter 3, the adsorption device 4, and the gas-liquid separator 6, those not described in detail can refer to the prior art.

[0047] Refer toFigure 1 , this embodiment provides a super-high temperature aerobic fermentation system, which further includes a heat exchanger 8. The gas-water separator 6 further includes a second outlet, and the second outlet is communicated with the heat exchange channel of the heat exchanger 8. The heat exchange channel is surrounded by heat exchange tubes. The heat exchange tubes between the liquid inlet 12 and the liquid outlet 9 of the heat exchanger 8 are used to transport a heat exchange medium, such as water. The gas-water separator 6 separates water vapor through a selective permeable membrane, and the water vapor enters the heat exchange channel of the heat exchanger 8 through the second outlet of the gas-water separator 6 for heat exchange, so as to recover the heat in the high-temperature water vapor generated by super-high temperature aerobic fermentation. A collection device 11 is provided at one end of the heat exchange channel. After the water vapor exchanges heat in the heat exchange channel, it condenses into condensed water, and the condensed water flows through the heat exchange channel to the collection device 11 for collection. The collected condensed water can be used in fermentation.

[0048] Specifically, the heat exchanger 8 includes a liquid inlet 12 and a liquid outlet 9. The pipeline between the liquid inlet 12 and the liquid outlet 9 is used to transport a heat exchange medium. Auxiliary heating tubes are provided on the inner side wall of the fermentation chamber 1. The liquid outlet 9 of the heat exchanger 8 is communicated with the inlet of the auxiliary heating tube, and the outlet of the auxiliary heating tube is communicated with the liquid inlet 12 of the heat exchanger 8, so as to recycle the recovered heat to heat the materials in the fermentation chamber 1. The flow direction of the heat exchange medium is opposite to the flow direction of the water vapor, which can improve the heat exchange efficiency.

[0049] In addition, three-way valves are provided at the liquid inlet 12 and the liquid outlet 9 of the heat exchanger 8. When heating is not required in the fermentation chamber 1, the heat exchange medium can be guided to other scenarios that require heating through an additional pipeline 5. For example, it can be used to assist in maintaining the temperature in the photobioreactor 14.

[0050] In addition, for super-high temperature aerobic fermentation, the heat contained in its fermentation steam is recycled, reducing the energy consumption of the super-high temperature aerobic fermentation system and avoiding heat waste.

[0051] Refer to Figure 1 , this embodiment provides a super-high temperature aerobic fermentation system, in which the photosynthetic microorganism is Chlorella vulgaris. The initial inoculation density of Chlorella vulgaris contains 1×10 6 -5×10 6 cells per milliliter of culture solution. This initial inoculation density can quickly establish sufficient biomass to start effectively absorbing carbon dioxide and ammonia, while providing sufficient buffering capacity to cope with changes in the gas generation rate during fermentation; avoiding light limitation effects or oxygen accumulation problems caused by too high cell density, which will inhibit the growth of Chlorella vulgaris.

[0052] It should be noted that the carbon dioxide and ammonia separated from the waste gas are introduced into the culture solution of Chlorella and absorbed and utilized by Chlorella. The oxygen produced by Chlorella floats above the liquid surface of the culture solution and can be collected and utilized. It can be understood that the collected gas will contain a small amount of unabsorbed carbon dioxide and ammonia, but it does not affect the aeration of the fermentation tank 1.

[0053] Referring to Figure 1 , this embodiment provides a ultra-high temperature aerobic fermentation system, which further includes a blower 16. The fermentation tank 1 is provided with an aeration pipeline 175, and the blower 16 is simultaneously connected to the aeration pipeline 175 and the photobioreactor 14; the oxygen produced by the photosynthetic microorganism is sent into the fermentation tank 1 through the blower 16 and the aeration pipeline 175. The oxygen produced by the photosynthetic microorganism is directly sent into the fermentation tank 1 by means of the blower 16 used for aeration of the aerobic fermentation system, without additional system equipment. In addition, the oxygen produced by the photosynthetic microorganism increases the oxygen content of the aeration, and to a certain extent, the number of aeration times can be reduced, thereby reducing the aeration energy consumption.

[0054] Under the condition that the initial moisture content, temperature, ventilation intensity and other conditions are the same, a composting experiment was carried out for one cycle by using the ultra-high temperature aerobic fermentation system provided in this embodiment with the fermentation tank 1 operating alone as a comparison: under the condition of heat recovery in the ultra-high temperature aerobic fermentation system provided in this embodiment, the highest temperature of the compost heap is about 10 °C lower than that when the fermentation tank 1 operates alone, but the high temperature period is longer. In the fermentation tank 1 with heat recovery function, the lower temperature in the thermophilic stage does not reduce the amount of carbon dioxide in the waste gas. On the contrary, the carbon dioxide emission is higher and more intensive. The above phenomena indicate that heat recovery not only does not affect the fermentation process, but also enables thermophilic microorganisms to maintain a high level of activity.

[0055] Taking a 20-foot standard container (fermentation tank 1) as an example, it can accommodate about 8 tons of fermentation raw materials. In the initial stage, the C:N ratio of the fermentation material 18 in the fermentation tank 1 is 25:1, and the moisture content is 55%-65%. During the one-week ultra-high temperature aerobic composting cycle, when the temperature of the compost heap reaches 80 °C, the water pump of the heat exchanger 8 and the steam pipeline valve are opened to start heat recovery. During the recovery time of 60 h, the temperature of tap water (heat exchange medium) rises from 20 °C to 50 °C, the average water flow rate is 0.64 m3 / h, the total recovered heat is 4840 MJ, 30 tons of hot water are produced, and the recovered heat accounts for 60% of the steam heat, which is equivalent to the recoverable calorific value of 360 kJ-1000 KJ per kilogram of organic matter. The single-module volume is configured to be 2 m 3There are 146 photobioreactors. The fermentation waste gas (CO2, NH3) is introduced into the photobioreactor 14. Chlorella fixes carbon and nitrogen through photosynthesis and simultaneously releases oxygen back into the fermentation system. The temperature in the photobioreactor is 25°C ± 3°C, and the light-dark ratio is 18h:6h. According to the microalgae (Chlorella) production rate of 0.8 g / L / day, the annual output of microalgae powder is 2,640 kg, the average carbon content of microalgae is 45% (dry weight), the annual carbon fixation amount of microalgae is 1,188 kg, the annual carbon dioxide consumption is 4,356 kg, and the annual oxygen release amount is 3,168 kg. For every 1 ton of fermentation material treated, 18 can reduce carbon dioxide emissions by 50 - 80 kg. The aeration power is reduced from 0.8 - 1.2 kWh / m3 in the traditional fermentation system to 0.3 - 0.5 kWh / m3. The treatment method of the fermentation waste gas by the whole system is energy-saving and environment-friendly, suitable for popularization and use; the microalgae powder has wide application value, especially favored in the health food and nutritional supplement markets. Recycling the fermentation waste gas can also generate additional economic value.

[0056] Example 2:

[0057] The example provides an ultra-high temperature aerobic fermentation process, which uses the aforementioned ultra-high temperature aerobic fermentation system and includes the following steps: S1. Preheat the fermentation material in the fermentation bin, start the aerobic fermentation process, and collect the waste gas generated by fermentation; S2. Pass the collected waste gas into a gas separation device to successively remove dust, hydrogen sulfide and volatile organic compounds, and separate carbon dioxide and ammonia from water vapor; S3. Pass the separated carbon dioxide and ammonia into a photobioreactor. The photobioreactor absorbs and utilizes carbon dioxide and ammonia and releases oxygen; then transport the released oxygen to the fermentation bin in S1 to assist the oxygen fermentation process.

[0058] The photosynthesis involving carbon dioxide promotes the biological accumulation of carbon sources, and at the same time can promote the absorption of ammonia by organisms, reduce greenhouse gas emissions, and reduce the nitrogen source input for organisms. The oxygen generated by photosynthesis effectively increases the oxygen content in the fermentation bin, reduces the frequency of aerobic aeration during the fermentation process, and thus reduces the aeration energy consumption. The ultra-high temperature aerobic fermentation process of the present invention has an ecological and environment-friendly treatment method for fermentation waste gas, reduces greenhouse gas emissions, has low energy consumption, and at the same time realizes the recycling of waste gas resources.

[0059] Further, in the ultra-high temperature aerobic fermentation process, after S2, the separated water vapor is subjected to waste heat recovery, and then the recovered heat is used to preheat the fermentation material in the fermentation bin in S1. The waste heat recovery is further realized during the recovery process of the fermentation waste gas, reducing the energy consumption of the entire fermentation system and reducing the operation cost of the fermentation system.

[0060] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0061] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0063] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ultra-high temperature aerobic fermentation system, comprising a fermentation bin (1), characterized in that, It further includes a gas separation device (2) and a photobioreactor (14); The gas separation device (2) is communicated with the fermentation tank (1) and is used for sequentially separating the components of the waste gas generated by the fermentation of the fermentation tank (1); The photobioreactor (14) is communicated with the downstream of the gas separation device (2) along the gas flow direction. Photosynthetic microorganisms are distributed in the photobioreactor (14), and the photosynthetic microorganisms can absorb carbon dioxide and ammonia separated by the gas separation device (2) and generate oxygen; The photobioreactor (14) is further communicated with the fermentation tank (1) to supply the oxygen generated by the photosynthetic microorganisms to the fermentation tank (1).

2. The ultra-high temperature aerobic fermentation system according to claim 1, wherein The gas separation device (2) sequentially includes a connected filter (3), an adsorption device (4) and a gas-liquid separator (6) along the gas flow direction; The filter (3) is used for removing dust in the waste gas; The adsorption device (4) is used for removing hydrogen sulfide and volatile organic compounds in the waste gas; The gas-liquid separator (6) is provided with a first outlet, and the first outlet is communicated with the photobioreactor (14). The gas-liquid separator (6) can separate carbon dioxide and ammonia, and carbon dioxide and ammonia are introduced into the photobioreactor (14) through the first outlet.

3. The ultra-high temperature aerobic fermentation system according to claim 2, characterized in that, It further includes a heat exchanger (8); The gas-liquid separator (6) further includes a second outlet, and the second outlet is communicated with the heat exchanger (8); The gas-liquid separator (6) can further separate water vapor, and the water vapor enters the heat exchanger (8) through the second outlet for heat exchange to recover the heat in the waste gas generated by the fermentation of the fermentation tank (1).

4. The ultra-high temperature aerobic fermentation system according to claim 3, wherein The heat exchanger (8) includes a heat exchange tube and a liquid inlet (12) and a liquid outlet (9) located at both ends of the heat exchange tube; An auxiliary heating tube is provided on the side wall of the fermentation tank (1); The liquid outlet (9) of the heat exchanger (8) is communicated with the inlet of the auxiliary heating tube, and the outlet of the auxiliary heating tube is communicated with the liquid inlet (12) of the heat exchanger (8).

5. The ultra-high temperature aerobic fermentation system according to claim 3, wherein The gas-liquid separator (6) is a membrane separator provided with a selective permeable membrane.

6. The ultra-high temperature aerobic fermentation system according to claim 1, characterized in that, The photosynthetic microorganism is Chlorella; The initial inoculation density of the Chlorella is 1×10 6 -5×10 6 cells per milliliter of culture solution.

7. The ultra-high temperature aerobic fermentation system according to claim 6, characterized in that, It further includes a blower (16); The fermentation tank (1) is provided with an aeration pipeline (17), and the blower (16) is communicated with the aeration pipeline (17) and the photobioreactor (14) at the same time; The oxygen generated by the photosynthetic microorganisms is sent into the fermentation tank (1) through the blower (16) and the aeration pipeline (17).

8. The ultra-high temperature aerobic fermentation system according to claim 2, wherein The filter (3) is a bag filter and / or a cartridge filter; An activated carbon adsorption material is arranged in the adsorption device (4) on the cross-section along the gas flow direction.

9. An ultra-high temperature aerobic fermentation process, characterized in that, Using the ultra-high temperature aerobic fermentation system according to any one of claims 1-8, it includes the following steps: S1. Preheat the fermentation materials in the fermentation tank, start the aerobic fermentation process, and collect the waste gas generated by the fermentation; S2. Introduce the collected waste gas into the gas separation device to sequentially perform dust removal, removal of hydrogen sulfide and volatile organic compounds, and separation of carbon dioxide and ammonia from water vapor; S3. Introduce the separated carbon dioxide and ammonia into the photobioreactor. The photobioreactor absorbs and utilizes carbon dioxide and ammonia and releases oxygen; then transport the released oxygen to the fermentation tank in S1 to assist the oxygen fermentation process.

10. The ultra-high temperature aerobic fermentation process according to claim 9, characterized in that, After S2, recover the waste heat of the separated water vapor, and then use the recovered heat to preheat the fermentation materials in the fermentation tank in S1.

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