Carbon-based solid waste gasification microbial protein device and method

Abstract

This invention provides a device and method for synthesizing microbial protein from carbon-based solid waste through gasification, belonging to the field of microbial protein synthesis technology. It includes a gasification system, a purification system, a conversion and decarbonization system, and a microbial protein synthesis system. The gasification system is used to gasify the carbon-based solid waste, converting it into syngas. The purification system is used to remove impurities from the syngas, forming clean syngas. This invention optimizes the slagging problem of fluidized bed gasification by using a gasifier and a pyrolysis furnace for staged gasification of carbon-based solid waste. The gas guide pipe and pre-swirl pipe installed on the pyrolysis furnace can accelerate and pre-swirl the incoming syngas to generate swirling flow within the furnace. Simultaneously, by setting a stepped arrangement of oxygen supply pipes, steam pipes, and syngas pipes at the bottom of the top cover, oxygen, water vapor, and syngas can be mixed in stages, avoiding the chaos and uncertainty of instantaneous mixing of multiple gas streams at the outlet, and ensuring sufficient mixing of oxygen, water vapor, and syngas.

Description

Technical Field

[0001] This invention relates to the field of microbial protein synthesis technology, and in particular to a device and method for synthesizing microbial proteins by gasifying carbon-based solid waste. Background Technology

[0002] With the improvement of people's living standards in my country, the demand for protein has been increasing year by year, leading to a continuous expansion of the gap in the demand for high-quality protein. Microbial protein technology has attracted much attention due to its wide range of raw material sources and fast growth rate. Among them, the gasification of carbon-based solid waste into syngas, whose main components are H2 and CO, can provide an ideal gas source for microbial protein synthesis.

[0003] Since carbon-based solid waste consists of carbon-containing solid waste such as household garbage, agricultural and forestry waste, and livestock and poultry manure, it is prone to slagging during the gasification process. In addition, the syngas contains high levels of tar and methane, which seriously restricts the utilization efficiency of the syngas. To optimize this problem, existing technologies generally use a high-temperature reforming stage to deeply treat the crude syngas. By introducing oxygen and water vapor, the crude syngas is further treated at high temperatures to reduce the tar and methane content.

[0004] When treating crude syngas, oxygen, water vapor, and syngas are injected into the pyrolysis furnace from the top at high speed through different straight nozzles. This type of nozzle allows gas mixing to rely solely on its own jet diffusion, resulting in poor gas mixing. The oxygen, water vapor, and syngas are unevenly distributed within the pyrolysis furnace, causing incomplete local reactions and low tar and methane removal efficiency. Therefore, this application provides a carbon-based solid waste gasification and synthesis microbial protein device and method to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for synthesizing microbial protein from carbon-based solid waste gasification in order to solve the above-mentioned problems. By setting oxygen supply pipes, steam pipes and syngas pipes arranged in a stepped manner at the bottom of the top cover, oxygen, water vapor and syngas can be mixed in stages, avoiding the chaos and uncertainty of multiple gas streams mixing instantaneously at the outlet, ensuring sufficient mixing of oxygen, water vapor and syngas. This solves the problems mentioned in the background art, where gas mixing can only rely on its own jet diffusion, resulting in poor gas mixing effect, uneven distribution of oxygen, water vapor and syngas in the cracking furnace, causing insufficient local reaction, and low efficiency of tar and methane removal.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A device for synthesizing microbial protein from carbon-based solid waste gasification includes a gasification system, a purification system, a shift and decarbonization system, and a microbial protein synthesis system. The gasification system is used to gasify carbon-based solid waste into syngas. The purification system is used to remove impurities from the syngas to form clean syngas. The shift and decarbonization system is used to perform a water-gas shift reaction on the syngas and to decarbonize the syngas. The microbial protein synthesis system is used to uniformly distribute the gas in a culture medium for microbial cultivation.

[0008] The gasification system includes a gasifier and a pyrolysis furnace. The gasifier is used to gasify carbon-based solid waste and convert it into crude syngas. The pyrolysis furnace is used to remove methane and tar from the crude syngas. The pyrolysis furnace includes a furnace body and a top cover. From the center outwards, the bottom wall of the top cover is provided with an oxygen supply pipe, a steam pipe, and a syngas pipe. A pre-swirl tube is fixedly connected to the top of the top cover. The gas entering the pre-swirl tube rotates and generates centrifugal force, causing it to rotate and move downwards within the furnace body. A gas guide pipe is fixedly connected to the gas inlet end of the pre-swirl tube. The gas guide pipe has a conical structure and is used to increase the flow rate of the syngas entering the furnace.

[0009] In the above technical solution, the flow rate of the syngas can be increased by the conical gas guide tube, and under the action of the pre-swirl tube, the incoming gas is rotated to generate centrifugal force, causing the syngas to rotate and move downward inside the cracking furnace, avoiding disorderly diffusion of the syngas inside the cracking furnace. At the same time, the rotating syngas can capture water vapor and oxygen in the center, improve the gas mixing effect, and better remove methane and tar from the syngas.

[0010] Based on this, a sleeve is fitted around the outside of the syngas pipe, and an expansion section is provided at the bottom of the sleeve. This design allows for the adjustment of the gas swirl speed inside the pyrolysis furnace, thereby controlling the time of high-temperature gasification treatment of the mixed gas in the furnace body and ensuring the removal effect of methane and tar.

[0011] The second objective of this invention is to provide a method for synthesizing microbial protein from carbon-based solid waste gasification, comprising the following steps:

[0012] S1. Carbon-based solid waste is fed into a gasifier and converted into crude syngas B through a gasification reaction. Crude syngas B is fed into a cracking furnace for high-temperature reforming to remove methane and tar.

[0013] S2. The crude syngas B is introduced into the purification system to remove its impurities and form clean syngas C.

[0014] S3. Clean syngas C is introduced into the shift and decarbonization system. The introduced water vapor undergoes a water-gas shift reaction, converting CO in the syngas into CO2 and H2. A portion of CO2 is removed according to the H2 to CO2 ratio required for microbial protein synthesis to form syngas D.

[0015] S4. Mix the syngas D with the culture medium CM, and then introduce the mixed gas into the microbial protein synthesis system to culture the microorganisms.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above-mentioned scheme, the carbon-based solid waste gasification and microbial protein synthesis device provided in this application uses a gasifier and a pyrolysis furnace to stage gasify carbon-based solid waste, which optimizes the slagging problem of fluidized bed gasification. The gas guide pipe and pre-swirl pipe set on the pyrolysis furnace can accelerate and pre-swirl the incoming syngas to generate swirling flow in the furnace body. At the same time, by setting the oxygen supply pipe, steam pipe and syngas pipe in a stepped arrangement at the bottom of the top cover, oxygen, water vapor and syngas can be mixed in stages, avoiding the chaos and uncertainty of multiple gas streams mixing instantaneously at the outlet, ensuring sufficient mixing of oxygen, water vapor and syngas, improving the effect of high-temperature gasification, and improving the problem of low tar and methane removal efficiency in the mixed gas due to insufficient reaction.

[0018] By installing a liftable sleeve on the outside of the syngas pipe, the gas swirl speed inside the pyrolysis furnace can be adjusted, thereby controlling the time of high-temperature gasification treatment of the mixed gas in the furnace body, reducing fuel consumption while ensuring efficient removal of methane and tar.

[0019] Using carbon-based solid waste as raw material, gasification and conversion technologies are used to transform it into a suitable hydrogen-carbon source ratio for microbial protein synthesis. This not only improves the disposal of carbon-based solid waste for resource and energy purposes, but also produces high-value microbial protein. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 This is a flowchart of the carbon-based solid waste gasification and microbial protein synthesis process of the present invention;

[0022] Figure 2 This is a schematic flowchart of the gasification system of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall structure of the pyrolysis furnace of the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of the top cover of the pyrolysis furnace of the present invention;

[0025] Figure 5 This is a bottom view of the top cover of the present invention;

[0026] Figure 6This is a cross-sectional view of the top cover of the present invention;

[0027] Figure 7 This is a diagram showing the positional relationship between the oxygen supply pipe, steam pipe, and synthesis gas pipe of the present invention.

[0028] Figure 8 This is a schematic diagram showing the normal position of the sleeve of the present invention;

[0029] Figure 9 This is a schematic diagram of the sleeve after it has been moved down according to the present invention.

[0030] Figure label:

[0031] 1. Gasification system; 2. Purification system; 3. Shift conversion and decarbonization system; 4. Microbial protein synthesis system;

[0032] 11. Gasifier; 12. Cyclone separator; 13. Return feeder; 14. Feeding device; 15. Pyrolysis furnace; 16. Waste heat recovery device; 17. Dust collector;

[0033] 151. Furnace body; 152. Top cover; 1521. Connecting pipe; 153. Gas guide pipe; 154. Pre-swirl pipe; 155. Oxygen supply pipe; 1551. Inner contraction section; 1552. Outer expansion section; 156. Steam pipe; 1561. Cyclone separator; 1562. Inner constriction section; 1563. Steam supply pipe; 1564. Branch pipe; 157. Syngas pipe; 1571. Spiral guide; 158. Sleeve; 1581. Expansion section; 159. Fixing frame; 1591. Linear drive component; 1592. Connecting shaft.

[0034] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0035] The following is a detailed description of the apparatus and method for synthesizing microbial protein from carbon-based solid waste gasification, provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can use other alternative methods to implement the invention; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0036] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0037] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0038] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0039] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0040] like Figure 1As shown, an embodiment of the present invention provides a device for synthesizing microbial protein from carbon-based solid waste gasification, including a gasification system 1, a purification system 2, a conversion and decarbonization system 3, and a microbial protein synthesis system 4. The purification system 2 consists of a water washing tower and an adsorption tower, the conversion and decarbonization system 3 consists of a conversion unit and a decarbonization unit, and the microbial protein synthesis system 4 is a multi-tower series gas-liquid-solid three-phase synthesis tower, with a gas distributor at the bottom of the synthesis tower. Synthesis gas enters the synthesis tower through the gas distribution plate. The gasification system 1 is used to gasify carbon-based solid waste and convert it into synthesis gas. The purification system 2 is used to remove impurities from the synthesis gas to form clean synthesis gas. The conversion and decarbonization system 3 is used to perform a water-gas conversion reaction on the synthesis gas and to decarbonize the synthesis gas. The microbial protein synthesis system 4 is used to uniformly distribute the gas in the culture medium for microbial cultivation.

[0041] In this embodiment, as Figure 2 and Figure 3 As shown, the gasification system 1 includes a gasifier 11 and a pyrolysis furnace 15. The gasifier 11 is used to gasify carbon-based solid waste and convert it into crude syngas. The pyrolysis furnace 15 is used to remove methane and tar from the crude syngas. The gasification system 1 also includes a cyclone separator 12, a return feeder 13, a feeding device 14, a waste heat recovery device 16, and a dust collector 17. The feeding device 14 is located at the inlet of the gasifier 11. The cyclone separator 12 is connected to the exhaust port of the gasifier 11. The exhaust end of the cyclone separator 12 is connected to the gas guide pipe 153 through a pipe. The return feeder 13 is located between the slag discharge port of the cyclone separator 12 and the return port of the gasifier 11. The waste heat recovery device 16 is connected to the exhaust port of the pyrolysis furnace 15. The dust collector 17 is connected to the exhaust port of the waste heat recovery device 16.

[0042] It should be noted that the feeding device 14 is a lock hopper feeding device, which achieves stable feeding of materials through lock hopper pressure transformation, thereby ensuring the stable effect of gasifier 11 on carbon-based solid waste gasification. Under the gas-solid separation of cyclone separator 12, crude syngas and fly ash are discharged from the gas outlet at the top of cyclone separator 12. Circulating materials and unreacted carbon-based solid waste enter the return feeder 13 from the ash discharge port of cyclone separator 12, and return to gasifier 11 for further gasification. The gas discharged from the top of cyclone separator 12 enters cracking furnace 15 through gas guide pipe 153 and pre-swirl pipe 154 for high-temperature reforming gasification. Waste heat recovery device 16 is a waste heat boiler, used to recover the sensible heat of high-temperature syngas from the high-temperature reforming gasification section to meet the steam requirements of processing. Dust collector 17 is a bag filter, used to capture fly ash entrained in syngas.

[0043] In this embodiment, as Figures 3 to 5As shown, the pyrolysis furnace 15 includes a furnace body 151 and a top cover 152. From the center outwards, the bottom wall of the top cover 152 is provided with an oxygen supply pipe 155, a steam pipe 156 and a syngas pipe 157. A pre-swirl pipe 154 is fixedly connected to the top of the top cover 152. The gas enters and rotates, generating centrifugal force, causing it to rotate and move downwards within the furnace body 151. A gas guide pipe 153 is fixedly connected to the gas inlet end of the pre-swirl pipe 154. The gas guide pipe 153 has a conical structure and is used to increase the flow rate of the syngas entering the furnace.

[0044] An outer channel is formed between the steam pipe 156 and the syngas pipe 157. The end of the pre-swirl pipe 154 is connected to the outer channel. A connecting pipe 1521 is provided inside the outer channel. The connecting pipe 1521 is fixed on the bottom wall of the top cover 152 and is connected to the pre-swirl pipe 154. A spiral guide 1571 is provided on the inner wall of the syngas pipe 157 to guide the syngas to rotate in the outer channel.

[0045] The connecting pipe 1521 extends further along the rotation path of the pre-swirl pipe 154, accelerates the syngas through the gas guide pipe 153, and under the action of the spiral guide 1571, causes the syngas to rotate and move downward inside the cracking furnace 15, avoiding disorderly diffusion of the syngas inside the cracking furnace 15, and extending its processing time inside the cracking furnace 15 to improve the removal effect of methane and tar.

[0046] In this embodiment, as Figures 6 to 7 As shown, the oxygen supply pipe 155 has an inner constriction section 1551 inside to increase the speed of oxygen compression. The bottom end of the oxygen supply pipe 155 has an outer expansion section 1552. An annular channel is formed between the steam pipe 156 and the oxygen supply pipe 155. A steam supply pipe 1563 is provided on the top of the top cover 152. The bottom of the steam supply pipe 1563 has multiple branch pipes 1564, and the bottom end of the branch pipes 1564 extends into the annular channel to distribute water vapor evenly in the annular channel. A cyclone separator 1561 is provided in the annular channel and below the branch pipes 1564 to form a rotating airflow of the incoming water vapor. The bottom end of the steam pipe 156 has an inner constriction section 1562 to gather the water vapor towards the center.

[0047] The inner constriction section 1551 can accelerate the passing oxygen, thereby providing penetration kinetic energy for subsequent mixing with water vapor. Under the action of the outer expansion section 1552, the oxygen can diffuse outward. At the same time, the cooperation between the outer expansion section 1552 and the inner constriction section 1562 can cause the water vapor to contract inward, better mixing with the outwardly diffused oxygen. It is worth mentioning that the cyclone separator 1561 in the annular channel can make the passing water vapor form a rotating airflow, which can better capture the central oxygen and further improve the mixing effect of water vapor and oxygen.

[0048] It is worth mentioning that the lower ends of the oxygen supply pipe 155, steam pipe 156, and syngas pipe 157 are arranged in a stepped manner, with the end of the syngas pipe 157 being the most prominent. This design allows the incoming syngas to be ejected first, forming a swirling and reflux zone in the outer channel. Under the action of the swirling flow, the mixture of oxygen and water vapor can be captured and mixed a second time during the circulation process, ensuring sufficient mixing with the syngas. This allows oxygen, water vapor, and syngas to be evenly distributed in the cracking furnace, thereby improving the cracking efficiency of tar and methane.

[0049] like Figure 8 and Figure 9 As shown, a sleeve 158 is fitted on the outside of the syngas pipe 157. An expansion section 1581 is provided at the bottom end of the sleeve 158. The expansion section 1581 can reduce the axial flow velocity of the gas in the furnace, making the gas flow more easily rotate outward, thereby enhancing the stability of the reflux zone and ensuring that the gas flow rotates and flows downward stably in the furnace body 151. A fixing frame 159 is fixedly connected at equal intervals on the top of the top cover 152. A linear drive component 1591 is fixedly connected to the top of the fixing frame 159. A connecting shaft 1592 is slidably connected at equal intervals inside the top cover 152, and the two ends of the connecting shaft 1592 are fixedly connected to the extension and retraction ends of the sleeve 158 and the linear drive component 1591, respectively.

[0050] Under normal conditions, the expansion section 1581 at the end of the sleeve 158 is in contact with the end of the syngas pipe 157. At this time, the distance between the bottom end of the sleeve 158 and the inner wall of the top cover 152 is as follows: Figure 8 As shown in F1, at this time, the gas flow immediately rotates outward after being discharged from the synthesis gas pipe 157. Because the shaft diameter T1 of the rotating gas flow is relatively large, the rotation speed is relatively slow, resulting in a longer reaction time for high-temperature reforming. The linear drive 1591 drives the connecting shaft 1592 and the sleeve 158 downward. At this time, the distance between the bottom end of the sleeve 158 and the inner wall of the top cover 152 is as follows... Figure 9 As shown in F2, at this time, after the gas flow is discharged from the inside of the syngas pipe 157, it continues to rotate and move downward in the sleeve 158, thereby constraining the rotation axis diameter of the gas flow. The rotation axis diameter T2 of the constrained gas flow is relatively reduced, so the rotation speed of the gas flow is relatively increased, which shortens the reaction time of high-temperature reforming. This design can adjust the high-temperature reforming time of the syngas, and reduce fuel consumption while ensuring efficient removal of methane and tar.

[0051] The second objective of this invention is to provide a method for synthesizing microbial protein from carbon-based solid waste gasification, comprising the following steps:

[0052] S1. Carbon-based solid waste is fed into gasifier 11 and converted into crude syngas B through gasification reaction. Crude syngas B is fed into cracking furnace 15 for high-temperature reforming to remove methane and tar.

[0053] S2. The crude syngas B is introduced into the purification system 2 to remove its impurities and form clean syngas C.

[0054] S3. Clean syngas C is introduced into the shift and decarbonization system 3. The introduced water vapor undergoes a water-gas shift reaction, converting CO in the syngas into CO2 and H2. A portion of CO2 is removed according to the H2 to CO2 ratio required for microbial protein synthesis to form syngas D.

[0055] S4. Mix the syngas D with the culture medium CM, and then introduce the mixed gas into the microbial protein synthesis system 4 to culture the microorganisms.

[0056] For details, please refer to Figure 1 and Figure 2 Carbon-based solid waste is fed into the furnace of gasifier 11 via feeding device 14, where it undergoes combustion and gasification reaction with gasifying agent A1 introduced at the bottom of the furnace to generate crude syngas. Gasifying agent A1 is a mixture of gases such as water vapor, oxygen, and carbon dioxide, with an oxygen concentration of 21%-55%. The crude syngas, carrying recycled materials and unreacted carbon-based solid waste, is lifted and enters cyclone separator 12. The crude syngas and fly ash enter the gas guide pipe 153 from the top gas outlet. The recycled materials and unreacted carbon-based solid waste are returned to the furnace via return feeder 13 for further gasification. The crude syngas, carrying fly ash, enters the outer channel through gas guide pipe 153, pre-swirl pipe 154, and connecting pipe 1521, where it rotates and moves downwards. In the process, the crude syngas is mixed with oxygen and water vapor A2, with an oxygen concentration of 80%-100%. The mixed gas undergoes a high-temperature gasification reaction to remove methane and tar from the crude syngas. The position of the sleeve 158 is adjusted according to the composition or entry rate of the crude syngas, thereby controlling the reaction time inside the cracking furnace 15. The high-temperature reformed crude syngas enters the waste heat recovery device 16. The waste heat boiler recovers the sensible heat of the high-temperature syngas from the high-temperature gasification section to meet the steam requirements of the processing. At the same time, the temperature of the syngas is reduced to 180°C. The cooled gas enters the dust collector 17 to capture the fly ash entrained in the syngas, reducing the dust content of the crude syngas leaving the gasification system 1 to 10 mg / Nm³. 3 the following;

[0057] The crude syngas B leaving gasification system 1 first passes through a water scrubbing tower to remove most of the impurities such as dust, tar, ammonia, and hydrogen chloride. Simultaneously, the water content of the crude syngas B is reduced, and its temperature is lowered to approximately 40°C. When the pH value of the circulating liquid in the water scrubbing tower is low or high, the pH is adjusted to 7-8 using an alkaline solution (sodium bicarbonate or sodium hydroxide) or an acidic solution (low-concentration nitric acid or sulfuric acid). The crude syngas B exiting the water scrubbing tower then enters an adsorption tower to adsorb trace amounts of tar, chlorine, and ammonia, reducing the tar content in the syngas to <1 mg / Nm³. 3Clean synthesis gas C is formed by adsorption towers using activated carbon, coke, or nano-scale organic adsorption materials.

[0058] Under the action of a catalyst (water vapor S), CO in syngas C is converted into CO2 and H2. Part of the CO2 is removed according to the H2 to CO2 ratio required for microbial protein synthesis, while H2S is also removed from the syngas. The ratio of H2 to CO2 in the syngas leaving the conversion and decarbonization system 3 is 2:1-6:1, and the H2S content is reduced to <0.1 mg / Nm³. 3 With a CO concentration of <1%, syngas D is formed to meet the needs of microbial growth and microbial protein synthesis.

[0059] Syngas D is evenly distributed in the culture medium CM using a gas distributor. Using syngas D and culture medium CM as raw materials, the temperature of the microbial protein synthesis system 4 is adjusted to 20-60℃ and the pressure is adjusted to ≤0.3MPa. Microbial protein is produced through fermentation and microbial synthesis. Syngas D provides carbon, hydrogen, and oxygen sources for protein synthesis, while culture medium CM provides nitrogen, sulfur, and nutrients for microbial growth. The culture medium CM consists of corn starch, soybean protein powder, beef extract, ammonium sulfate, potassium dihydrogen phosphate, magnesium sulfate, sodium chloride, etc. The feeding ratio of syngas to corn starch, soybean protein powder, beef extract, ammonium sulfate, potassium dihydrogen phosphate, magnesium sulfate, sodium chloride, etc. is: 100-150:2-5:0.5-2.0:0.5-5:0.1-1.2:0.1-1.2:0.1-0.8:0.01-0.1.

[0060] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for synthesizing microbial protein from carbon-based solid waste gasification, characterized in that, It includes a gasification system (1), a purification system (2), a conversion and decarbonization system (3), and a microbial protein synthesis system (4). The gasification system (1) is used to gasify carbon-based solid waste into syngas; The purification system (2) is used to remove impurities from the syngas to form clean syngas; The conversion and decarbonization system (3) is used to perform water-gas conversion reaction on syngas and to decarbonize syngas; The microbial protein synthesis system (4) is used to uniformly distribute gas in the culture medium for microbial culture; The gasification system (1) includes a gasifier (11) and a pyrolysis furnace (15). The gasifier (11) is used to gasify carbon-based solid waste and convert it into crude syngas. The pyrolysis furnace (15) is used to remove methane and tar from the crude syngas. The pyrolysis furnace (15) includes a furnace body (151) and a top cover (152). From the center outwards, the bottom wall of the top cover (152) is provided with an oxygen supply pipe (155), a steam pipe (156) and a syngas pipe (157). A pre-swirl pipe (154) is fixedly connected to the top of the top cover (152). The gas enters and rotates to generate centrifugal force, causing it to rotate and move downwards inside the furnace body (151). A gas guide pipe (153) is fixedly connected to the gas inlet end of the pre-swirl pipe (154). The gas guide pipe (153) has a conical structure and is used to increase the flow rate of the syngas.

2. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 1, characterized in that, The oxygen supply pipe (155) has an inward section (1551) inside to increase the speed of oxygen compression, and the oxygen supply pipe (155) has an outward expansion section (1552) at the bottom end.

3. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 2, characterized in that, An annular channel is formed between the steam pipe (156) and the oxygen supply pipe (155). A steam supply pipe (1563) is provided at the top of the top cover (152). Multiple branch pipes (1564) are provided at the bottom of the steam supply pipe (1563), and the bottom end of the branch pipes (1564) extends into the annular channel to distribute water vapor evenly in the annular channel.

4. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 3, characterized in that, A cyclone separator (1561) is provided inside the annular channel and below the branch pipe (1564) to form a rotating airflow of the incoming water vapor. An inner bundle section (1562) is provided at the bottom end of the steam pipe (156) to gather the water vapor towards the center.

5. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 1, characterized in that, An outer channel is formed between the steam pipe (156) and the synthesis gas pipe (157). The end of the pre-swirl pipe (154) is connected to the outer channel. A connecting pipe (1521) is provided inside the outer channel. The connecting pipe (1521) is fixed on the bottom wall of the top cover (152) and is connected to the pre-swirl pipe (154).

6. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 5, characterized in that, The inner wall of the syngas pipe (157) is provided with a spiral guide (1571) for guiding the syngas to rotate in the outer channel.

7. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 6, characterized in that, The outer side of the syngas pipe (157) is fitted with a sleeve (158), and the bottom end of the sleeve (158) is provided with an expansion section (1581).

8. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 7, characterized in that, The top cover (152) is fixedly connected to a fixed frame (159) at equal intervals. A linear drive (1591) is fixedly connected to the top of the fixed frame (159). A connecting shaft (1592) is slidably connected inside the top cover (152) at equal intervals. Both ends of the connecting shaft (1592) are fixedly connected to the sleeve (158) and the telescopic end of the linear drive (1591), respectively.

9. The carbon-based solid waste gasification and microbial protein synthesis device according to claim 1, characterized in that, The gasification system (1) also includes a cyclone separator (12), a return feeder (13), a feeding device (14), a waste heat recovery device (16), and a dust collector (17). The feeding device (14) is located at the feed inlet of the gasifier (11). The cyclone separator (12) is connected to the exhaust port of the gasifier (11). The exhaust end of the cyclone separator (12) is connected to the gas guide pipe (153) through a pipe. The return feeder (13) is located between the slag discharge port of the cyclone separator (12) and the return port of the gasifier (11). The waste heat recovery device (16) is connected to the exhaust port of the pyrolysis furnace (15). The dust collector (17) is connected to the exhaust port of the waste heat recovery device (16).

10. A method for synthesizing microbial protein using a carbon-based solid waste gasification device as described in claim 1, characterized in that, Includes the following steps: S1. Carbon-based solid waste is fed into a gasifier (11) and converted into crude syngas B through a gasification reaction. Crude syngas B is fed into a cracking furnace (15) for high-temperature reforming to remove methane and tar. S2. Pass crude syngas B into the purification system (2) and remove its impurities to form clean syngas C; S3. Clean syngas C is introduced into the conversion and decarbonization system (3). The introduced water vapor undergoes a water-gas conversion reaction, converting CO in the syngas into CO2 and H2, and removing part of the CO2 according to the ratio of H2 to CO2 required for microbial protein synthesis to form syngas D. S4. Mix the syngas D with the culture medium CM, and then introduce the mixed gas into the microbial protein synthesis system (4) to culture the microorganisms.

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