System and method for generating electricity through blending combustion of vinasse in W-shaped flame boiler

Abstract

The invention discloses a system and method for generating power through blending combustion of vinasse in a W-shaped flame boiler, and belongs to the technical field of biological blending combustion low-carbonization transformation of thermal power generating units, the system comprises a system body and a control unit, and the system body comprises a totally-closed tank car and a biomass bin connected through a closed loop; a discharge assembly is arranged at the top of the biomass bin, a plurality of cone discharge ports are formed in the bottom of the biomass bin, and each cone discharge port is sequentially connected with a screw feeder, a rotor scale and a star feeder; the star-shaped feeder is connected with an air supply pipeline and a biomass powder feeding pipe connected to the W-shaped flame boiler, and the air supply pipeline is provided with a Roots blower and a cooler; and the wall surface of the W-shaped flame boiler is provided with a special biomass burner connected with the corresponding biomass powder feeding pipe. On the basis that normal operation of the coal-fired boiler is not affected, safe and efficient conveying of the vinasse and coupling stable combustion of the pulverized coal and the vinasse are achieved, and engineering applicability and safety are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of biomass co-combustion and low-carbon transformation of thermal power units, and particularly relates to a system and method for generating electricity by co-combustion of distiller's grains in a W-shaped flame boiler. Background Art

[0002] In the context of the transition to clean energy, the efficient use of biomass energy is crucial for achieving the dual carbon goals. Traditional disposal of lees, a large amount of organic waste generated in the brewing industry, poses the dual problems of pollution and resource waste. Therefore, its energy utilization is a key future direction.

[0003] As an improvement, the W-shaped flame boiler, with its unique double-arch furnace structure and staged air distribution design, has become the main furnace type for burning low-volatile coals (such as anthracite). Its stable operation is highly dependent on the high-temperature combustion environment and the precise organization of the W-shaped flame flow field. However, directly incorporating high-volatile, low-ignition-point distiller's grains into existing coal-fired systems can cause significant problems.

[0004] On the one hand, the grindability of distiller's grains is significantly different from that of coal. If distiller's grains are mixed into the pulverizing system for a long time, the output of the pulverizer equipment will be abnormal. In addition, biomass is relatively light, has high volatile matter, and has a low ignition temperature. It is easy to cause fire and explosion in the pulverizing system, which poses a high safety risk. On the other hand, if pulverized coal and biomass fuel are mixed in the primary air pulverizing pipe, it is easy to cause blockage and wear of the original pipeline, and distiller's grains are prone to prematurely release volatiles in the furnace arch area, interfering with the penetration and mixing of the original pulverized coal airflow in the furnace, and destroying the "W"-shaped flame morphology. Therefore, in summary, in the current application of distiller's grains in coal-fired systems, there is a risk of causing blockage and wear of the original pipeline, distiller's grains are prone to prematurely release volatiles in the furnace arch area, interfering with the penetration and mixing of the original pulverized coal airflow in the furnace, and destroying the "W"-shaped flame morphology, and there may be certain safety hazards in the transportation and pulverizing process of distiller's grains. Summary of the Invention

[0005] The present invention provides a system and method for generating electricity by mixing distiller's grains with coal in a W-shaped flame boiler. The purpose is to solve the problems that, when distiller's grains are currently mixed with coal-fired systems, the original pipelines are easily blocked and worn, the distiller's grains are prone to prematurely release volatile matter in the furnace arch area, interfering with the penetration and mixing of the original coal powder airflow in the furnace, destroying the W-shaped flame shape, and certain safety hazards may exist in the transportation and pulverization processes of the distiller's grains.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a system for generating electricity by burning distiller's grains in a W-shaped flame boiler, comprising a system body and a control unit configured on the system body. The system body comprises a W-shaped flame boiler and a biomass conveying unit configured thereon; the biomass conveying unit can be combined with the control unit to pneumatically convey biomass to the W-shaped flame boiler; wherein: The biomass conveying unit includes a fully enclosed tank truck for transporting biomass powder, which is connected to a biomass silo through a closed circuit to transport the biomass powder to the biomass silo; an emission assembly is provided on the top of the biomass silo, which is used to discharge the waste gas from the biomass silo; a plurality of cone discharge ports are provided at the bottom of the biomass silo, and a screw feeder and a rotor scale are connected in sequence below each cone discharge port; each rotor scale outlet is connected to a star feeder; the inlet of the star feeder is connected to an air supply pipeline, and the outlet is connected to a W-shaped flame boiler through a biomass powder feeding pipe, and the air supply pipeline is provided with a Roots blower and a cooler in sequence along the direction of air inlet; Pulverized coal burners are arranged correspondingly at the double arches of the furnace of the W-shaped flame boiler. The pulverized coal burners are equipped with biomass-specific burners, and the biomass powder feeding pipes are respectively connected to the corresponding biomass-specific burners.

[0007] In some embodiments, the biomass silo corresponding control unit is configured with a temperature detection unit, an alarm unit, and an inert gas protection unit.

[0008] In some embodiments, the emission assembly includes a dust removal device, and the dust removal device is provided with an exhaust gas fan at one end away from the biomass silo; the exhaust gas after the biomass is burned in the biomass-specific burner is purified by the exhaust gas purification unit of the coal-fired boiler.

[0009] In some embodiments, the rotor scale housing is a fully sealed structure, and the rotor scale is equipped with an intelligent control system based on a PID regulation algorithm.

[0010] Furthermore, the W-shaped flame boiler is equipped with a boiler DCS system; the intelligent control system of the rotor scale is communicatively connected to the boiler DCS system so that the control unit receives the load signal of the W-shaped flame boiler in real time and dynamically adjusts the feed amount of the biomass material.

[0011] In some embodiments, the shell of the screw feeder is made of steel plate, the inner lining of the screw feeder is made of ultra-high molecular polyethylene material, and the spiral blades of the screw feeder are of a variable pitch structure.

[0012] In some embodiments, a muffler is further provided on the air supply pipeline between the Roots blower and the cooler, and the pressure of the gas transported by the air supply pipeline is controlled to be 0.3-0.5 MPa.

[0013] In some embodiments, the fully enclosed tank truck adopts a double-layer sealing structure and is equipped with a nitrogen protection unit and a temperature monitoring unit, and forms a closed loop with the biomass silo through a standard quick connector.

[0014] In some embodiments, the number of cone discharge ports is four, and correspondingly, the number of spiral feeders, rotor scales, star feeders, air supply pipes, biomass powder feed pipes, Roots blowers, and coolers is also four.

[0015] The present invention further provides a method for generating electricity by burning distiller's grains in a W-shaped flame boiler. The method is based on the above-mentioned system for generating electricity by burning distiller's grains in a W-shaped flame boiler, and the method comprises the following steps: S1. Use fully enclosed tank trucks to transport biomass materials to a specific area near the biomass silo, and transfer the biomass materials to the biomass silo through a closed circuit; during the biomass silo loading process, the dust and exhaust gas generated by the biomass loading are collected and discharged through the discharge component; S2. The biomass is discharged through the cone discharge port at the bottom of the biomass silo, and is metered by a screw feeder and a rotor scale before being conveyed to a star feeder. The biomass discharged from the star feeder is pneumatically conveyed by the conveying gas generated by the Roots blower after passing through a cooler. S3. The biomass material is transported to the biomass-specific burner of the W-shaped flame boiler through an independent biomass powder feeding pipe, and burns in coordination with the pulverized coal burner.

[0016] The present invention provides a system and method for generating electricity by burning distiller's grains in a W-shaped flame boiler, which has the following beneficial effects.

[0017] The present invention discloses a system for generating electricity by co-firing distiller's grains with a W-shaped flame boiler. An independent distiller's grains pneumatic conveying unit and a special burner are designed to prevent distiller's grains from entering the coal mill and causing abnormal output, thereby reducing the risk of spontaneous combustion and explosion caused by the high volatility and low ignition point of the distiller's grains. The present invention does not require the mixing of biomass into the original coal powder conveying pipeline, thus avoiding pipeline blockage and wear problems, and can achieve large-scale co-firing; the biomass powder conveying is decoupled from the operation of the coal mill, and any combination of coal mills can achieve the operation of the biomass co-firing system. The method of the present invention has a short process modification cycle, and the modification basically does not affect the normal operation of the coal-fired boiler. After the modification, there is no effect on the original coal powder combustion system. The treatment process can achieve ultra-low emission treatment of distiller's grains combustion tail gas with the help of the tail gas purification system of the coal-fired boiler. The present invention utilizes a W-shaped flame boiler to achieve large-scale co-firing of distiller's grains and coal for power generation, realizes safe and efficient transportation of distiller's grains and coupled stable combustion of coal powder and distiller's grains, and has good engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 The present invention is a schematic diagram of the architecture of a system for generating electricity by burning distiller's grains in a W-shaped flame boiler.

[0020] Among them, 1. Fully enclosed tank truck, 2. Biomass silo, 3. Dust removal device, 4. Exhaust fan, 5. Screw feeder, 6. Rotor scale, 7. Star feeder, 8. Roots blower, 9. Cooler, 10. W-type flame boiler. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] How to develop a system that can overcome the defects of distiller's grains fuel characteristics, deeply couple with W-type flame boilers, ensure safe, stable and efficient co-combustion power generation, and thus achieve safe and efficient transportation of distiller's grains and coupled stable combustion of coal powder and distiller's grains, and improve the safety factor of the system.

[0028] like Figure 1 As shown, the present invention provides a system for generating electricity by mixing distiller's grains with a W-shaped flame boiler, comprising a system body and a control unit configured in the system body. The system body comprises a W-shaped flame boiler 10 and a biomass conveying unit configured therein; the biomass conveying unit can be combined with the control unit to pneumatically convey biomass to the W-shaped flame boiler 10; wherein: The biomass conveying unit includes a fully enclosed tank truck 1 for transporting biomass powder, which is connected to a biomass silo 2 through a closed circuit to transport the biomass powder to the biomass silo 2; an emission assembly is provided on the top of the biomass silo 2, which is used to discharge the exhaust gas from the biomass silo 2; a plurality of cone discharge ports are provided at the bottom of the biomass silo 2, and a screw feeder 5 and a rotor scale 6 are connected in sequence below each cone discharge port; each rotor scale 6 outlet is connected to a star feeder 7; the inlet of the star feeder 7 is connected to an air supply pipeline, and the outlet is connected to a W-shaped flame boiler 10 through a biomass powder feeding pipe, and the air supply pipeline is provided with a Roots blower 8 and a cooler 9 in sequence along the direction of air inlet; Pulverized coal burners are correspondingly arranged at the double arches of the furnace of the W-shaped flame boiler 10. The pulverized coal burners are equipped with biomass-specific burners, and the biomass powder feeding pipes are respectively connected to the corresponding biomass-specific burners.

[0029] The present invention is a system for generating electricity by mixing distiller's grains with a W-shaped flame boiler. The system forms a transportation system with a coal-fired system through an independent fully enclosed tank truck 1, a biomass silo 2, an air supply pipeline, a biomass powder feeding pipe, and a biomass-specific burner. This system can effectively avoid the risk of ignition or even explosion of high-volatile biomass in the pulverizing process, while avoiding the blockage and wear of the original coal powder conveying pipeline. The present invention independently arranges a biomass-specific burner next to the coal powder burner at the double arch of the W-shaped flame boiler 10 to ensure that the distiller's grains are sprayed and burned at a fixed point in the furnace, avoids the premature release of biomass volatiles that interfere with the penetration and mixing of the coal powder airflow, and maintains the stability of the W-shaped flame. The biomass conveying unit of the present invention is physically connected to the boiler body through a pneumatic conveying pipeline and a special burner. There is no need to modify the original coal-fired system. The modification can be implemented during the normal operation of the boiler, and the system does not affect the coal powder combustion after it is put into operation. It has a certain degree of convenience and applicability.

[0030] Furthermore, the biomass silo 2 of the present invention has a temperature detection unit, an alarm unit, and an inert gas protection unit. Through temperature detection and inert gas protection, safety hazards such as spontaneous combustion of biomass can be prevented and controlled in real time. The dust removal device 3 of the present invention is equipped with an exhaust gas blower 4; and the tail gas after the biomass is burned by the biomass-specific burner is purified by the tail gas purification unit of the coal-fired boiler, and ultra-low emissions are achieved through the linkage between the dust removal device 3 and the boiler tail gas purification system. The fully enclosed tank truck 1 of the present invention adopts a double-layer sealing structure and is equipped with a nitrogen protection unit and a temperature monitoring unit. It forms a closed loop with the biomass silo 2 through a standard quick connector. The double-layer sealing and nitrogen protection of the fully enclosed tank truck 1 effectively avoid the risk of explosion in the transportation link, thereby improving the safety factor.

[0031] Furthermore, the present invention is used in a system for co-firing distiller's grains with a W-shaped flame boiler for power generation. The housing of rotor scale 6 is a fully sealed structure, and rotor scale 6 is equipped with an intelligent control system based on a PID adjustment algorithm. The fully sealed design of rotor scale 6 prevents dust leakage. The W-shaped flame boiler 10 is equipped with a boiler DCS system. The intelligent control system of rotor scale 6 is communicatively connected to the boiler DCS system, so that the control unit receives the load signal of the W-shaped flame boiler 10 in real time and dynamically adjusts the feed rate of biomass. The PID algorithm and DCS communication realize the linkage between the biomass feed rate and the boiler load, ensuring the combustion efficiency and system stability under co-firing.

[0032] In addition, the present invention is used in a system for generating electricity by mixing brewer's grains with a W-type flame boiler. The shell of the screw feeder 5 is made of steel plate, the inner lining of the screw feeder 5 is made of ultra-high molecular weight polyethylene material, and the spiral blades of the screw feeder 5 adopt a variable pitch structure. The anti-blocking design of the ultra-high molecular weight polyethylene lining and the variable pitch blades of the screw feeder 5 improves its stability.

[0033] A muffler is further provided between the Roots blower 8 and the cooler 9 on the air supply pipeline of the present invention. The pressure of the gas transported by the air supply pipeline is controlled to be 0.3-0.5 MPa. The reliability of the transport is ensured by combining the control of the pressure range, muffler and cooling.

[0034] In some embodiments, the cone discharge port of the present invention is set to four, and other corresponding spiral feeders 5, rotor scales 6, star feeders 7, air supply pipes, biomass powder feeding pipes, Roots blowers 8 and coolers 9 are also set to four. By matching four sets of parallel feeding units with a W-shaped flame boiler 10, the system's adaptability to working conditions can be improved.

[0035] The present invention also provides a method for generating electricity by burning distiller's grains in a W-shaped flame boiler, the method comprising the following steps: S1. Use a fully enclosed tank truck 1 to transport biomass to a specific area near a biomass silo 2, and transfer the biomass to the biomass silo 2 through a closed circuit; during the loading process of the biomass silo 2, collect and discharge dust and exhaust gas generated by the biomass loading through the discharge component; S2, the biomass is discharged through the cone discharge port at the bottom of the biomass silo 2, and is metered by the screw feeder 5 and the rotor scale 6 and then conveyed to the star feeder 7; the conveying gas generated by the Roots blower 8 is pneumatically conveyed to the biomass output from the star feeder 7 after passing through the cooler 9; S3. The biomass material is transported to the biomass-specific burner of the W-shaped flame boiler 10 through an independent biomass powder feeding pipe, and burns in coordination with the pulverized coal burner.

[0036] The following is a detailed description of a system and method for generating electricity by burning distiller's grains in a W-shaped flame boiler according to the present invention through specific embodiments.

[0037] like Figure 1 As shown, the present invention is used for a system for generating electricity by burning distiller's grains in a W-shaped flame boiler: Because wet distiller's grains have a high moisture content and are prone to mold and bacteria growth, affecting their storage and utilization, manufacturers must dry them after production to reduce their moisture content to approximately 10%. After drying, the grains are transported to a designated location within the power plant via fully enclosed tank truck 1. Tank truck 1 utilizes a double-layer seal structure, a nitrogen protection system, and temperature monitoring to prevent the risk of dust explosions during transportation. Tank truck 1 connects to biomass silo 2 via standard quick-connect connectors, forming a closed circuit. The biomass powder is then transferred to silo 2 using the truck's built-in positive pressure pneumatic conveying device (0.3-0.5 MPa).

[0038] The biomass silo 2 has a hood-like upper structure and is equipped with a dust removal device 3 next to the silo to effectively suppress dust generation. Exhaust gas from the dust removal device 3 is discharged to high altitude via an exhaust blower 4, ensuring no odor leakage. Biomass silo 2 is equipped with a temperature detection unit, an alarm unit, and an inert gas protection unit to prevent spontaneous combustion and explosion of biomass powder.

[0039] Four conical discharge ports are provided at the bottom of the biomass silo 2, achieving full coverage of the bottom area of ​​the biomass silo 2. The weighing and feeding system below each conical discharge port utilizes a combination of a screw feeder 5 and a rotor scale 6, designed to achieve accurate metering and stable conveying of biomass powder. The shell of the screw feeder 5 is manufactured from wear-resistant steel plates and lined with ultra-high molecular weight polyethylene to reduce friction and extend service life. The spiral blades are designed with a variable pitch structure to ensure uniform material conveying and prevent bridging. The shell of the rotor scale 6 is fully sealed to prevent dust from escaping. The internal rotor is manufactured from wear-resistant alloy steel and has a hardened surface for improved wear resistance. The system is equipped with an intelligent control system that uses a PID adjustment algorithm for precise flow control. The control system seamlessly connects to the boiler DCS system, receiving boiler load signals in real time and dynamically adjusting the biomass powder feed rate to ensure optimal combustion efficiency.

[0040] After being precisely weighed by rotor scale 6, the biomass powder enters star feeder 7 for subsequent pneumatic conveying. Roots blowers 8 serve as the power source for pneumatic conveying. Four Roots blowers 8 and corresponding coolers 9 are installed in the blower room. The air from the Roots blowers 8 is silenced by the outlet muffler and cooled by cooler 9 before entering the air supply pipeline. This air is then pneumatically conveyed to the biomass powder at the bottom of star feeder 7. The biomass powder is transported via a separate pipeline.

[0041] The present invention is based on the structure of a W-shaped flame boiler 10. Its pulverized coal burners are located in the double arches of the furnace, and four dedicated biomass burners are symmetrically arranged near the pulverized coal burners. Four biomass powder feed pipes also lead to the dedicated biomass burners on both sides, ensuring stable combustion of distiller's grains within the furnace of the W-shaped flame boiler 10. The flue gas generated by the distiller's grains combustion can be discharged in an environmentally friendly manner using the existing denitrification, dust removal, and desulfurization equipment in the coal-fired unit.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the specification and described above. Any equivalent changes, modifications and evolutions made by using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A system for generating electricity by burning distiller's grains in a W-shaped flame boiler, characterized in that: The invention comprises a system body and a control unit configured on the system body, wherein the system body comprises a W-shaped flame boiler (10) and a biomass conveying unit configured thereon; the biomass conveying unit can be combined with the control unit to pneumatically convey biomass to the W-shaped flame boiler (10); wherein: The biomass conveying unit comprises a fully enclosed tank truck (1) for transporting biomass powder, wherein the fully enclosed tank truck (1) is connected to a biomass silo (2) via a closed circuit so as to transport the biomass powder to the biomass silo (2); a discharge assembly is provided on the top of the biomass silo (2), and the discharge assembly is used to discharge the waste gas from the biomass silo (2); a plurality of cone discharge ports are provided at the bottom of the biomass silo (2), and a screw feeder (5) and a rotor scale (6) are connected in sequence below each cone discharge port; the outlet of each rotor scale (6) is connected to a star feeder (7); the inlet of the star feeder (7) is connected to an air supply pipeline, and the outlet is connected to a W-shaped flame boiler (10) via a biomass powder feeding pipe, and the air supply pipeline is provided with a roots blower (8) and a cooler (9) in sequence along the direction of air inlet; Pulverized coal burners are correspondingly arranged at the double arches of the furnace of the W-shaped flame boiler (10), the pulverized coal burners are equipped with biomass-specific burners, and the biomass powder feeding pipes are respectively connected to the corresponding biomass-specific burners.

2. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The biomass silo (2) corresponds to a control unit configured with a temperature detection unit, an alarm unit, and an inert gas protection unit.

3. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The emission assembly includes a dust removal device (3), and the dust removal device (3) is provided with an exhaust gas fan (4) at one end away from the biomass silo (2); the exhaust gas after the biomass is burned by the biomass-specific burner is purified by means of the exhaust gas purification unit provided by the coal-fired boiler.

4. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The rotor scale (6) has a fully sealed housing, and the rotor scale (6) is equipped with an intelligent control system based on a PID regulation algorithm.

5. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 4, characterized in that: The W-shaped flame boiler (10) is equipped with a boiler DCS system; the intelligent control system of the rotor scale (6) is communicatively connected to the boiler DCS system so that the control unit receives the load signal of the W-shaped flame boiler (10) in real time and dynamically adjusts the feeding amount of the biomass material.

6. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The shell of the screw feeder (5) is made of steel plate, the inner lining of the screw feeder (5) is made of ultra-high molecular polyethylene material, and the spiral blades of the screw feeder (5) adopt a variable pitch structure.

7. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: A muffler is also provided on the air supply pipeline between the Roots blower (8) and the cooler (9), and the pressure of the gas transported by the air supply pipeline is controlled to be 0.3-0.5 MPa.

8. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The fully enclosed tank truck (1) adopts a double-layer sealing structure and is equipped with a nitrogen protection unit and a temperature monitoring unit, and forms a closed loop with the biomass silo (2) through a standard quick connector.

9. The system for generating electricity by burning distiller's grains in a W-shaped flame boiler according to claim 1, characterized in that: The number of the vertebral body discharge ports is four, and correspondingly, the number of the spiral feeder (5), the rotor scale (6), the star feeder (7), the air supply pipeline, the biomass powder feeding pipe, the Roots blower (8) and the cooler (9) are also four.

10. A method for generating electricity by burning distiller's grains in a W-shaped flame boiler, characterized in that: The method is based on the system for power generation by burning distiller's grains in a W-shaped flame boiler according to any one of claims 1 to 9, and comprises the following steps: S1. Using a fully enclosed tank truck (1) to transport biomass materials to a specific area near a biomass silo (2), and transferring the biomass materials to the biomass silo (2) through a closed circuit; during the loading process of the biomass silo (2), collecting and discharging dust and exhaust gas generated by the loading of the biomass materials through a discharge component; S2, outputting the biomass through the cone discharge port at the bottom of the biomass silo (2), metering the biomass through the screw feeder (5) and the rotor scale (6), and then delivering the biomass to the star feeder (7); using the conveying gas generated by the Roots blower (8), the biomass output from the star feeder (7) is pneumatically conveyed after passing through the cooler (9); S3. The biomass material is transported to the biomass-specific burner of the W-shaped flame boiler (10) through an independent biomass powder feeding pipe, and burns in coordination with the pulverized coal burner.

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