Biomass powder feeding system

Abstract

The invention discloses a biomass powder feeding system, the biomass powder feeding system comprises an air supply module, a control module, a feeder and a reactor, the air supply module is communicated with the feeder and the reactor, and the air supply module is used for conveying loading airflow to the feeder and conveying supplementary airflow to the reactor; the feeder is communicated with the reactor and used for conveying materials to the reactor, and the control module is used for controlling the flow and the gas speed of the loading gas flow and the supplementary gas flow. According to the biomass powder feeding system, the principle that biomass is prone to fluidization under the action of airflow is utilized, stable and uniform feeding is achieved, the problems of material blocking, bridging and the like existing in traditional spiral feeding are solved, meanwhile, the gas speed and the gas amount can be adjusted in real time through the control module, it is guaranteed that the feeding amount and the feeding speed always meet the operation requirements, and the working efficiency is improved. Therefore, different types of feeders can be flexibly adapted.

Description

Technical Field

[0001] This invention relates to the field of biomass energy utilization technology, specifically to a biomass powder feeding system. Background Technology

[0002] In recent years, with the emission of greenhouse gases, global warming has led to frequent extreme weather events, posing significant challenges to human survival and development. Countries worldwide have set goals for "carbon peaking and carbon neutrality," striving to reduce carbon dioxide emissions. Biomass energy, considered a zero-carbon energy source, has been widely researched and utilized. In biomass powder feeding technology, screw feeding is a commonly used method, characterized by continuous, stable, and uniform feeding. However, due to the low bulk density and poor flowability of biomass, screw feeding suffers from mechanical failures, jamming, and bridging during the transport of biomass powder. Furthermore, this method is not pressure-resistant, which restricts the reaction conditions for biomass pyrolysis and gasification, such as pressurized pyrolysis and gasification. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a biomass powder feeding system. This biomass powder feeding system utilizes the principle that biomass is easily fluidized under the action of airflow to achieve stable and uniform feeding, solving problems such as material jamming and bridging that exist in traditional screw feeders. At the same time, the present application can adjust the air speed and air volume in real time through the control module to ensure that the feeding amount and feeding speed always meet the operational requirements, so as to flexibly adapt to different types of feeders.

[0005] The biomass powder feeding system of this invention includes an air supply module, a control module, a feeder, and a reactor. The air supply module is connected to both the feeder and the reactor. The air supply module is used to supply a material-carrying airflow to the feeder and to supply a supplementary airflow to the reactor. The feeder is connected to the reactor and is used to supply material to the reactor. The control module is used to control the flow rate and velocity of the material-carrying airflow and the supplementary airflow.

[0006] In the biomass powder feeding system of this invention, the air supply module is connected to both the feeder and the reactor. The air supply module is used to supply the material-carrying airflow to the feeder and to supply supplementary airflow to the reactor. The feeder is connected to the reactor and is used to supply material to the reactor. The control module is used to control the flow rate and velocity of the material-carrying airflow and the supplementary airflow. Thus, this application utilizes the principle that biomass is easily fluidized under the action of airflow to achieve stable and uniform feeding, solving the problems of material jamming and bridging that exist in traditional screw feeders. At the same time, this application can adjust the air velocity and air volume in real time through the control module to ensure that the feeding amount and feeding speed always meet the operational requirements, so as to flexibly adapt to different types of feeders.

[0007] In some embodiments, the air delivery module includes an air compressor for delivering the material-carrying airflow to the feeder and supplemental airflow to the reactor.

[0008] In some embodiments, the control module includes a rotor flow meter and a controller, the rotor flow meter being connected between the air compressor and the feeder, and the controller being electrically connected to the rotor flow meter for adjusting the valve opening of the rotor flow meter.

[0009] In some embodiments, a flow regulating valve is provided on the connecting pipeline between the air compressor and the reactor, and the controller is electrically connected to the flow regulating valve to control the opening degree of the flow regulating valve.

[0010] In some embodiments, the control module further includes a temperature sensor for monitoring temperature information within the reactor, and the controller is electrically connected to the temperature sensor for controlling the valve opening of the flow regulating valve and the rotor flow meter based on the monitoring information from the temperature sensor.

[0011] In some embodiments, ball valve switches are provided at both the connection end of the feeder to the rotor flow meter and the connection end to the reactor.

[0012] In some embodiments, the control module further includes a level sensor for detecting the material filling height in the feeder, and the controller is electrically connected to the level sensor for controlling the opening and closing of the ball valve switch based on the detection information from the level sensor.

[0013] In some embodiments, the connecting pipeline between the air supply module, the feeder, and the reactor is a corrugated pipe.

[0014] In some embodiments, the corrugated pipe is a transparent pipe.

[0015] In some embodiments, the top of the feeder is provided with a feeding port, and the feeding port is provided with a removable rubber plug. Attached Figure Description

[0016] Figure 1 This is a biomass powder feeding system according to an embodiment of the present invention.

[0017] Figure label:

[0018] 1. Air compressor; 2. Rotor flow meter; 3. Feeder; 4. Reactor; 5. Controller; 6. Flow regulating valve. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] like Figure 1 As shown, the biomass powder feeding system according to an embodiment of the present invention includes an air supply module, a control module, a feeder 3, and a reactor 4. The air supply module is connected to both the feeder 3 and the reactor 4, and the air supply module is used to supply the material-carrying airflow to the feeder 3 and to supply the supplementary airflow to the reactor 4. The feeder 3 is connected to the reactor 4 and is used to supply materials to the reactor 4. The control module is used to control the flow rate and velocity of the material-carrying airflow and the supplementary airflow.

[0021] During actual operation, the airflow output by the air delivery module is divided into two paths. One path is fed into the feeder 3 to act as the material-carrying airflow to maintain the feeding operation, and the other path is fed into the reactor 4 to act as supplementary airflow, so that the fluidized bed air velocity reaches the fluidization requirement.

[0022] Understandably, due to the low density of biomass, the principle of easy fluidization of biomass under the action of airflow is utilized. Under a stable gas flow rate, the particles are fluidized in the pipe, and the particles at the top are carried out, achieving stable and uniform feeding. This solves the problems of material jamming and bridging in screw feeding. Compared with traditional screw feeding, there are no problems such as material jamming, bridging and lack of pressure resistance.

[0023] In the biomass powder feeding system of this invention, the air supply module is connected to both the feeder 3 and the reactor 4. The air supply module is used to supply the material-carrying airflow to the feeder 3 and to supply supplementary airflow to the reactor 4. The feeder 3 is connected to the reactor 4 and is used to supply material to the reactor 4. The control module is used to control the flow rate and velocity of the material-carrying airflow and the supplementary airflow. Thus, this application utilizes the principle that biomass is easily fluidized under the action of airflow to achieve stable and uniform feeding, solving the problems of material jamming and bridging that exist in traditional screw feeders. At the same time, this application can adjust the air velocity and air volume in real time through the control module to ensure that the feeding amount and feeding speed always meet the operational requirements, so as to flexibly adapt to different models of feeders 3.

[0024] In some embodiments, the air supply module includes an air compressor 1, which is used to supply the material-carrying airflow to the feeder 3 and the supplementary airflow to the reactor 4. Thus, the air compressor 1 can compress air to provide power for subsequent material feeding, and the air compressor 1 supports frequency conversion control, allowing the operating speed to be adjusted according to actual needs, resulting in energy saving and high efficiency.

[0025] In some embodiments, the control module includes a rotor flow meter 2 and a controller 5. The rotor flow meter 2 is connected between the air compressor 1 and the feeder 3, and the controller 5 is electrically connected to the rotor flow meter 2 to adjust the valve opening of the rotor flow meter 2. In other words, the material-carrying airflow delivered by the air compressor 1 to the feeder 3 first passes through the rotor flow meter 2 for flow regulation before subsequent material loading. Thus, by setting the rotor flow meter 2 and the controller 5 to form a control feedback system, this application can adjust the opening of the rotor flow meter 2 in real time according to the amount of material being fed, thereby achieving air velocity regulation, flexibly adapting to different feeding requirements, and achieving uniform feeding.

[0026] Furthermore, a flow regulating valve 6 is installed on the connecting pipeline between the air compressor 1 and the reactor 4. The controller 5 is electrically connected to the flow regulating valve 6 to control the opening degree of the flow regulating valve 6. Thus, the control feedback system composed of the controller 5 and the flow regulating valve 6 can adjust the opening degree of the flow regulating valve 6 in real time according to the fluidizing gas flow requirements. It should be noted that the feed rate depends on the gas velocity in the feeder 3. Therefore, the inner diameter of the feeder 3 and the carrier gas flow rate will simultaneously affect the feed rate. Experimental test results show that when the gas velocity is 0.3 m / s, the solid can be uniformly carried out of the feeder 3. The inner diameter of the feeder 3 is selected with reference to the duration of a single experiment. The control range of the carrier gas flow rate depends on the temperature of the reactor 4. Different reaction temperatures correspond to different fluidizing gas flow rates. Therefore, it is necessary to satisfy the condition that the fluidizing gas flow rate = feed carrier gas + supplementary gas flow rate. The controller 5 of this application can adjust the opening degree of the flow regulating valve 6 and the rotor flowmeter 2 to ensure that the total amount of the feed gas flow and the supplementary gas flow meets the fluidizing gas flow requirements, while also ensuring uniform feeding of the feed gas flow.

[0027] In some embodiments, the control module further includes a temperature sensor for monitoring the temperature information within the reactor 4. The controller 5 is electrically connected to the temperature sensor and controls the valve openings of the flow regulating valve 6 and the rotor flowmeter 2 based on the monitoring information from the temperature sensor. As mentioned above, the control range of the carrier gas flow rate depends on the temperature of the reactor 4. Different reaction temperatures correspond to different fluidizing gas flow rates. By setting the temperature sensor and controller 5 to form a control feedback system, the required gasification flow rate can be calculated based on the reaction temperature. Then, the openings of the flow regulating valve 6 and the rotor flowmeter 2 can be adjusted according to the required gasification flow rate to ultimately ensure that the total gas flow meets the fluidizing gas flow rate requirement.

[0028] Furthermore, ball valve switches are provided at both the connection ends of the feeder 3 and the rotor flowmeter 2, and at the connection ends of the feeder 3 and the reactor 4. When the material in the feeder 3 is insufficient, the ball valve switch can be closed, and then the feeder 3 can be fed, reducing the feeding process and the impact time is short, which can meet the needs of continuous reactions exceeding the single reaction time.

[0029] Furthermore, the control module also includes a level sensor, which is used to detect the material filling height inside the feeder 3. The controller 5 is electrically connected to the level sensor and is used to control the opening and closing of the ball valve based on the detection information from the level sensor. It should be noted that the stability of feeding depends on the filling height. Within a certain height range, the loss of biomass has little impact on feeding. Therefore, there is a high and low limit for the biomass filling inside the feeder 3. Stable feeding can be achieved within this high and low limit. At the same time, it is necessary to ensure that the biomass mass at the high and low limits can meet the single reaction time. This application, by setting a level sensor, can monitor the material level information in real time. When the biomass inside the feeder 3 drops to the low limit, the controller 5 can close the front and rear valves and then proceed with subsequent feeding, realizing intelligent feeding control.

[0030] Alternatively, the ball valve switch can also be manually closed by the operator, depending on actual needs and design costs, and no restrictions are imposed here.

[0031] Preferably, the connecting pipeline between the gas supply module, the feeder 3 and the reactor 4 is a corrugated pipe, which allows for flexible pipeline layout and easy assembly and disassembly.

[0032] Preferably, the corrugated pipe is a transparent pipe. This allows operators to observe the feeding status in real time, ensuring the stability of the system operation.

[0033] In some embodiments, the feeder 3 has a feeding port at its top, and a removable rubber stopper is provided at the feeding port. In other words, the feeder can be fed from the top, making the overall operation simple, without the need for hardware disassembly, and the overall feeding process quick.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A biomass powder feeding system, characterized in that, The device includes an air supply module, a control module, a feeder, and a reactor. The air supply module is connected to both the feeder and the reactor. The air supply module is used to supply a material-carrying airflow to the feeder and to supply a supplementary airflow to the reactor. The feeder is connected to the reactor and is used to supply material to the reactor. The control module is used to control the flow rate and velocity of the material-carrying airflow and the supplementary airflow.

2. The biomass powder feeding system according to claim 1, characterized in that, The air delivery module includes an air compressor, which is used to deliver the material-carrying airflow to the feeder and to deliver supplementary airflow to the reactor.

3. The biomass powder feeding system according to claim 2, characterized in that, The control module includes a rotor flow meter and a controller. The rotor flow meter is connected between the air compressor and the feeder. The controller is electrically connected to the rotor flow meter to adjust the valve opening of the rotor flow meter.

4. The biomass powder feeding system according to claim 3, characterized in that, A flow regulating valve is provided on the connecting pipeline between the air compressor and the reactor, and the controller is electrically connected to the flow regulating valve to control the opening degree of the flow regulating valve.

5. The biomass powder feeding system according to claim 4, characterized in that, The control module also includes a temperature sensor for monitoring the temperature information inside the reactor. The controller is electrically connected to the temperature sensor and is used to control the valve opening of the flow regulating valve and the rotor flow meter based on the monitoring information from the temperature sensor.

6. The biomass powder feeding system according to claim 3, characterized in that, Ball valve switches are provided at both the connection end of the feeder to the rotor flow meter and the connection end to the reactor.

7. The biomass powder feeding system according to claim 6, characterized in that, The control module also includes a level sensor, which is used to detect the material filling height in the feeder. The controller is electrically connected to the level sensor and is used to control the opening and closing of the ball valve switch based on the detection information from the level sensor.

8. The biomass powder feeding system according to any one of claims 1-7, characterized in that, The connecting pipeline between the air supply module, the feeder, and the reactor is a corrugated pipe.

9. The biomass powder feeding system according to claim 8, characterized in that, The corrugated pipe is a transparent pipe.

10. The biomass powder feeding system according to any one of claims 1-7, characterized in that, The feeder is provided with a feeding port at the top, and a removable rubber plug is provided at the feeding port.

Images