System and method for carbon separation of biomass with different particle sizes

Abstract

The invention discloses a system and a method for separating biomass carbon with different particle sizes. The system comprises a biomass carbon storage system, a conveying system, a constant pressure generator, a compressed air system, an exhaust device and a plurality of separation branches, an outlet of the biomass charcoal storage system is connected with an inlet of the conveying system, and an outlet of the conveying system is connected with a material inlet of the constant pressure generator; an outlet of the compressed air system is connected with an air inlet in the bottom of the constant-pressure generator, a plurality of discharging ports are sequentially formed in the side face of the constant-pressure generator from top to bottom, one discharging port corresponds to one separation branch, each discharging port is communicated with an inlet of the corresponding separation branch, and each separation branch is communicated with the corresponding separation branch. And the gas outlet of each separation branch is communicated with the inlet of the exhaust device. The system and the method can be used for efficiently separating the biochar.

Description

Technical Field

[0001] The invention belongs to the field of biomass carbon improvement and utilization, and relates to a system and method for separating biomass carbon with different particle sizes. Background Art

[0002] Waste resource utilization and harmless disposal have become key issues facing us, among which promoting the construction of a waste recycling system is an important measure. Waste can be efficiently made into biochar through carbonization, and biochar is widely used.

[0003] Publication No. CN217971620U A lithium hydroxide closed-loop negative pressure conveying system comprises a negative pressure feed tank and a negative pressure discharge tank, a feed buffer device is installed on the discharge port of the negative pressure feed tank, the outlet of the feed buffer device is sealedly connected to the feed port of the conveying pipeline through a feed shut-off fan, the discharge port of the conveying pipeline is connected to the feed port of the negative pressure discharge tank, a discharge buffer device is installed on the discharge port of the negative pressure discharge tank, the gas outlet of the negative pressure discharge tank is connected to the inlet of a gas backflush system, the outlet of the gas backflush system is connected to the inlet of a gas filter device through a pipeline, the outlet of the gas filter device is connected to the inlet of a gas cooling device through a pipeline, the outlet of the gas cooling device is connected to the gas return port of a gas pressure stabilizing device through a pipeline, and the gas outlet of the gas pressure stabilizing device is connected to the gas inlet of the conveying pipeline through a pipeline. The utility model is a closed-loop conveying, which ensures the sealing of the closed-loop conveying through the feed buffer device and the discharge buffer device, realizes the back-blowing of the raw materials into the negative pressure receiving tank through the gas back-blowing system, reduces the residual material in the gas, and the fan realizes the flow of gas in the closed-loop conveying, thereby driving the movement of materials in the conveying pipeline, and filters the impurities remaining in the pipeline through the gas filter device, reduces the temperature of the circulating gas through the gas cooling device, ensures the stability of the operation of the device, and ensures the stability of the gas pressure in the closed loop through the gas pressure stabilizing device. Through the above-mentioned overall structure, the sealing of the entire material conveying process is guaranteed, thereby effectively protecting the environment, avoiding secondary water absorption of raw materials, preventing the introduction of magnetic foreign matter, and having high safety. In addition, the device can realize automatic control, reducing labor costs.

[0004] However, different application scenarios have different requirements for particle size, so how to efficiently separate biochar has become a key issue in improving the utilization value of biochar. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a system and method for separating biomass carbon with different particle sizes, which can efficiently separate biochar.

[0006] To achieve the above-mentioned purpose, the present invention discloses a system for separating biomass carbon with different particle sizes, including a biomass carbon storage system, a conveying system, a constant pressure generator, a compressed air system, an exhaust device and a plurality of separation branches;

[0007] The outlet of the biomass charcoal storage system is connected to the inlet of the conveying system, and the outlet of the conveying system is connected to the material inlet of the constant pressure generator; the outlet of the compressed air system is connected to the air inlet at the bottom of the constant pressure generator, and a number of discharge ports are arranged on the side of the constant pressure generator from top to bottom, wherein one discharge port corresponds to one separation branch, wherein each discharge port is connected to the inlet of the corresponding separation branch, and the gas outlet of each separation branch is connected to the inlet of the exhaust device.

[0008] The further improvement of the system for separating biomass carbon with different particle sizes of the present invention is:

[0009] Furthermore, each separation branch includes an air-powder separation system and a fan, wherein the discharge port is connected to the inlet of the exhaust device via the air-powder separation system and the fan.

[0010] Furthermore, the separation branch also includes a storage bin, wherein the biomass charcoal outlet of the air-powder separation system is connected to the inlet of the storage bin.

[0011] Furthermore, the gas working medium outlet of the constant pressure generator is connected to the air-powder separation system in the uppermost separation branch.

[0012] Furthermore, the discharge port is connected to the air-powder separation system through a sealed pipeline.

[0013] The present invention discloses a method for separating biomass carbon with different particle sizes, and a system based on the separation of biomass carbon with different particle sizes. The system for separating biomass carbon with different particle sizes comprises a biomass carbon storage system, a conveying system, a constant pressure generator, a compressed air system, an exhaust device and a plurality of separation branches; the outlet of the biomass carbon storage system is connected to the inlet of the conveying system, and the outlet of the conveying system is connected to the material inlet of the constant pressure generator; the outlet of the compressed air system is connected to the air inlet at the bottom of the constant pressure generator, and the side of the constant pressure generator is sequentially provided with a plurality of discharge ports from top to bottom, wherein one discharge port corresponds to one separation branch, wherein each discharge port is connected to the inlet of the corresponding separation branch, and the gas outlet of each separation branch is connected to the inlet of the exhaust device

[0014] The method for separating biomass carbon with different particle sizes comprises:

[0015] The biochar is stored in the biochar storage system and then transported to the constant pressure generator through the conveying system. The compressed air generated by the compressed air system is sent to the constant pressure generator. The compressed air entering the constant pressure generator makes the pressure at different positions at the same height in the constant pressure generator the same, and uniformly decreases along the height direction; the biochar in the constant pressure generator is distributed in sequence in the height direction according to different particle sizes. The larger the particle size, the lower the position, and the smaller the particle size, the higher the position. The biochar of different particle sizes in the constant pressure generator enters different separation branches through each discharge port, and then is separated through each separation branch. The separated biochar is stored, and the separated gas is discharged through the exhaust device.

[0016] The further improvement of the method for separating biomass carbon with different particle sizes described in the present invention is:

[0017] Furthermore, each separation branch includes an air-powder separation system and a fan, wherein the discharge port is connected to the inlet of the exhaust device via the air-powder separation system and the fan.

[0018] Furthermore, the separation branch also includes a storage bin, wherein the biomass charcoal outlet of the air-powder separation system is connected to the inlet of the storage bin.

[0019] Furthermore, the gas working medium outlet of the constant pressure generator is connected to the air-powder separation system in the uppermost separation branch.

[0020] Furthermore, the discharge port is connected to the air-powder separation system through a sealed pipeline.

[0021] The present invention has the following beneficial effects:

[0022] In the specific operation of the system and method for separating biomass carbon of different particle sizes described in the present invention, the biomass carbon is stored in the biomass carbon storage system and transported to the constant pressure generator through the transport system; the compressed air generated by the compressed air system is sent to the constant pressure generator through a pipeline, and the compressed air entering the constant pressure generator makes the pressure in the constant pressure generator the same on any cross section and uniformly decreases along the height direction; the biomass carbon in the constant pressure generator will be distributed in sequence in the height direction according to the different particle sizes, the larger the particle size, the lower the position, and the smaller the particle size, the higher the position; the excess gas in the constant pressure generator enters the No. 1 air powder separator through the gas working medium outlet In the separation system, the dust carried in the gas is separated from the air; according to the actual required particle size grade of biochar, discharge ports No. 1 to No. n are arranged in sequence along the height direction on the constant pressure generator, and the particle sizes of the materials output from discharge ports No. 1 to No. n are increased successively, and are transported to the No. 1 air-powder separation system to the No. n air-powder separation system through closed pipes respectively, to separate biochar of different particle sizes from the air, wherein the biochar of different particle sizes are stored in the storage bins of the No. 1 air-powder separation system to the No. n air-powder separation system in sequence, and then sold according to different uses, to achieve efficient separation of biochar of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding 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 an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural diagram of the present invention.

[0025] Among them, 1 is the biochar storage system, 2 is the conveying system, 3 is the compressed air system, 4 is the constant pressure generator, 5 is the gas working medium outlet, 6 is the No. 1 discharge port, 7 is the No. n discharge port, 8 is the No. 1 air-powder separation system, 9 is the No. 1 fan, 10 is the No. n air-powder separation system, 11 is the No. n fan, and 12 is the exhaust device. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0029] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0030] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0031] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0034] As is known, a constant pressure generator is a device that can generate a stable output pressure. The following is a detailed analysis of the constant pressure generator: The constant pressure generator is usually composed of the following key parts: Pressure source: responsible for generating pressure. Controller: can adjust and control the pressure. Sensor: used to sense and measure the pressure in the system under test. Output port: used to output the pressure signal to the system under test. The working principle is: The working principle of the constant pressure generator is based on the principles of pressure transmission and feedback control. It adds a highly stable reference pressure to the controlled pressure signal, so that the system can adjust the controlled pressure value according to the law of the reference pressure. Specifically, the constant pressure generator compares the reference pressure and the controlled pressure through the control circuit, and feeds back to the control circuit, and finally controls the output pressure.

[0035] Biochar is a highly aromatic, carbon-rich porous solid granular material generated by high-temperature pyrolysis of carbon-rich biomass (such as forest residues, agricultural residues, urban solid waste, energy crops and animal manure) under anaerobic or anoxic conditions. The following is a detailed introduction to biochar: Elemental composition: The main components of biochar are carbon, hydrogen, oxygen, nitrogen, etc., among which carbon has the highest mass fraction, which can reach 38% to 76%. In addition to the high carbon content, the content of nitrogen, phosphorus, potassium, calcium and magnesium in biochar is also high. Chemical structure: The alkyl and aromatic structures of biochar are its main components. The surface of biochar contains abundant oxygen-containing functional groups such as -COO-(-COOH) and -O-(-OH), which give biochar good adsorption characteristics, hydrophilic or hydrophobic characteristics and acid-base buffering capacity. Physical structure: Biochar has rich pore structure and large specific surface area, which makes it have strong adsorption capacity. At the same time, the oxygen-containing active groups make the biochar surface negatively charged, so it has a higher cation exchange capacity (CEC).

[0036] Embodiment 1

[0037] The system for separating biomass carbon of different particle sizes described in the present invention comprises a biomass carbon storage system 1, a conveying system 2, a constant pressure generator 4, a compressed air system 3, an exhaust device 12 and a plurality of separation branches; the outlet of the biomass carbon storage system 1 is connected to the inlet of the conveying system 2, and the outlet of the conveying system 2 is connected to the material inlet of the constant pressure generator 4; the outlet of the compressed air system 3 is connected to the air inlet at the bottom of the constant pressure generator 4, and a plurality of discharge ports are arranged on the side of the constant pressure generator 4 from top to bottom, wherein one discharge port corresponds to one separation branch, wherein each discharge port is connected to the inlet of the corresponding separation branch, and the gas outlet of each separation branch is connected to the inlet of the exhaust device 12.

[0038] Accordingly, the present invention discloses a method for separating biomass carbon with different particle sizes, and the method for separating biomass carbon with different particle sizes is implemented based on the system for separating biomass carbon with different particle sizes, and the system for separating biomass carbon with different particle sizes includes a biomass carbon storage system 1, a conveying system 2, a constant pressure generator 4, a compressed air system 3, an exhaust device 12 and a plurality of separation branches. Specifically, the method for separating biomass carbon with different particle sizes includes: storing biomass carbon in the biomass carbon storage system 1, and then conveying it to the constant pressure generator 4 through the conveying system 2, and the compressed air system 3 The generated compressed air is sent to the constant pressure generator 4. The compressed air entering the constant pressure generator 4 makes the pressure at different positions at the same height in the constant pressure generator 4 the same, and uniformly decreases along the height direction; the biochar in the constant pressure generator 4 is distributed in sequence in the height direction according to different particle sizes. The larger the particle size, the lower the position, and the smaller the particle size, the higher the position. The biochar of different particle sizes in the constant pressure generator 4 enters different separation branches through each discharge port, and then is separated through each separation branch. The separated biochar is stored, and the separated gas is discharged through the exhaust device 12.

[0039] Embodiment 2

[0040] refer to Figure 1 The system for separating biomass carbon with different particle sizes of the present invention comprises a biomass carbon storage system 1, a conveying system 2, a compressed air system 3, a constant pressure generator 4, a gas working medium outlet 5, a No. 61 discharge port 6, a No. 7n discharge port 7, a No. 81 air-powder separation system 8, a No. 91 fan 9, a No. n air-powder separation system 10, a No. n fan 11 and an exhaust device 12;

[0041] The outlet of the biomass charcoal storage system 1 is connected to the inlet of the conveying system 2, and the outlet of the conveying system 2 is connected to the material inlet of the constant pressure generator 4; the outlet of the compressed air system 3 is connected to the air inlet at the bottom of the constant pressure generator 4, the gas working medium outlet 5 and the No. 1 discharge port 6 of the constant pressure generator 4 are connected to the inlet of the No. 1 air-powder separation system 8, the gas outlet of the No. 1 air-powder separation system 8 is connected to the inlet of the No. 1 fan 9, and the outlet of the No. 1 fan 9 is connected to the inlet of the exhaust device 12; the No. n discharge port 7 of the constant pressure generator 4 is connected to the inlet of the No. n air-powder separation system 10, the gas outlet of the No. n air-powder separation system 10 is connected to the inlet of the No. n fan 11, and the outlet of the No. n fan 11 is connected to the inlet of the exhaust device 12.

[0042] Accordingly, the present invention discloses a method for separating biomass carbon with different particle sizes, and the method for separating biomass carbon with different particle sizes is implemented based on the system for separating biomass carbon with different particle sizes, and the system for separating biomass carbon with different particle sizes includes a biomass carbon storage system 1, a conveying system 2, a compressed air system 3, a constant pressure generator 4, a gas working medium outlet 5, a No. 61 discharge port 6, a No. 7n discharge port 7, a No. 81 air-powder separation system 8, a No. 91 fan 9, a No. n air-powder separation system 10, a No. n fan 11 and an exhaust device 12. Specifically, the method for separating biomass carbon with different particle sizes includes the following steps:

[0043] The biochar is stored in the biochar storage system 1 and transported to the constant pressure generator 4 through the transport system 2; the compressed air generated by the compressed air system 3 is sent to the constant pressure generator 4 through a pipeline, and the compressed air entering the constant pressure generator 4 makes the pressure at different positions at the same height in the constant pressure generator 4 the same, and uniformly decreases along the height direction; the biochar in the constant pressure generator 4 is distributed in sequence in the height direction according to different particle sizes, the larger the particle size, the lower the position, and the smaller the particle size, the higher the position; the excess gas in the constant pressure generator 4 enters the No. 1 air-powder separation system 8 through the gas working medium outlet 5 to separate the dust carried in the gas from the air; according to the actual required particle size grade of the biochar, the constant pressure generator 4 is arranged in sequence along the height direction. Discharge port No. 1 6 to discharge port No. n 7 are arranged, and the particle sizes of materials output from discharge port No. 1 6 to discharge port No. n 7 are increased successively, and are respectively transported to air-powder separation system No. 1 8 to air-powder separation system No. n 10 through closed pipes to separate biomass charcoal of different particle sizes from air, wherein biomass charcoal of different particle sizes are sequentially stored in the storage bins of air-powder separation system No. 1 8 to air-powder separation system No. n 10, and then sold according to different purposes; the clean gases generated by air-powder separation system No. 1 8 to air-powder separation system No. n 10 are pressurized by fan No. 1 9 to fan No. n 11 respectively, and then sent to exhaust device 12 for organized emission, and the system can realize efficient separation of biomass charcoal of different particle sizes, thereby improving the utilization value of biomass charcoal.

[0044] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0045] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A system for separating biomass carbon with different particle sizes, characterized in that: It comprises a biochar storage system (1), a conveying system (2), a constant pressure generator (4), a compressed air system (3), an exhaust device (12) and a plurality of separation branches; The outlet of the biomass charcoal storage system (1) is connected to the inlet of the conveying system (2), and the outlet of the conveying system (2) is connected to the material inlet of the constant pressure generator (4); the outlet of the compressed air system (3) is connected to the air inlet at the bottom of the constant pressure generator (4), and a plurality of discharge ports are arranged on the side of the constant pressure generator (4) from top to bottom, wherein one discharge port corresponds to one separation branch, wherein each discharge port is connected to the inlet of the corresponding separation branch, and the gas outlet of each separation branch is connected to the inlet of the exhaust device (12).

2. The system for separating biomass carbon with different particle sizes according to claim 1, characterized in that: Each separation branch comprises an air-powder separation system and a fan, wherein the discharge port is connected to the inlet of the exhaust device (12) via the air-powder separation system and the fan.

3. The system for separating biomass carbon with different particle sizes according to claim 2, characterized in that: The separation branch also includes a storage bin, wherein the biomass charcoal outlet of the air-powder separation system is connected to the inlet of the storage bin.

4. The system for separating biomass carbon with different particle sizes according to claim 2, characterized in that: The gas working medium outlet (5) of the constant pressure generator (4) is connected to the air-powder separation system in the uppermost separation branch.

5. The system for separating biomass carbon with different particle sizes according to claim 2, characterized in that: The discharge port is connected with the air-powder separation system through a sealed pipeline.

6. A method for separating biomass carbon with different particle sizes, characterized in that: The system for separating biomass carbon with different particle sizes according to claim 1 comprises: The biochar is stored in a biochar storage system (1) and then transported to a constant pressure generator (4) through a transport system (2). The compressed air generated by a compressed air system (3) is transported to the constant pressure generator (4). The compressed air entering the constant pressure generator (4) makes the pressure at different positions at the same height in the constant pressure generator (4) the same, and the pressure is uniformly reduced along the height direction. The biochar in the constant pressure generator (4) is distributed in sequence in the height direction according to different particle sizes, with the larger the particle size, the lower the position, and the smaller the particle size, the higher the position. The biochar of different particle sizes in the constant pressure generator (4) enters different separation branches through each discharge port, and then is separated through each separation branch. The separated biochar is stored, and the separated gas is discharged through an exhaust device (12).

7. The method for separating biomass carbon with different particle sizes according to claim 6, characterized in that: Each separation branch comprises an air-powder separation system and a fan, wherein the discharge port is connected to the inlet of the exhaust device (12) via the air-powder separation system and the fan.

8. The system for separating biomass carbon with different particle sizes according to claim 7, characterized in that: The separation branch also includes a storage bin, wherein the biomass charcoal outlet of the air-powder separation system is connected to the inlet of the storage bin.

9. The method for separating biomass carbon with different particle sizes according to claim 7, characterized in that: The gas working medium outlet (5) of the constant pressure generator (4) is connected to the air-powder separation system in the uppermost separation branch.

10. The method for separating biomass carbon with different particle sizes according to claim 7, characterized in that: The discharge port is connected with the air-powder separation system through a sealed pipeline.

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