An integrated biomass carbonization and powder production device

Abstract

The utility model discloses an integrated biomass carbonization powder making device, the device includes: raw material storage, connecting hopper, through the hopper and send biomass material to the discharge gas heat recovery storehouse, the discharge gas heat recovery storehouse is sent to carbonization powder integrated equipment after heating to biomass material through the discharge gas, carbonization powder integrated equipment carries out the grinding and heating treatment to biomass material through the coal mill, and the granularity of the material that satisfies the first condition is sent to the baking pipe by hot air, carries out the baking treatment in the baking pipe, and the powder material that satisfies the second condition after baking is sent to the filter by hot air, the filter transmits the powder material after filtering to the gasification furnace through the conveying equipment, and the filtered gas is output to the discharge gas heat recovery storehouse and inert gas generator through the gas circulation pipeline, the inert gas generator is connected with carbonization powder integrated equipment, and the heated gas is output to the coal mill and the baking pipe respectively.

Description

Technical Field

[0001] This utility model relates to the field of biomass technology, and in particular to an integrated biomass carbonization and powdering apparatus. Background Technology

[0002] Biomass gasification converts biomass (such as crop straw and forestry residues) into combustible gases or chemical feedstocks, establishing a closed-loop carbon cycle and effectively utilizing the carbon in biomass waste. Producing chemical products like methanol through biomass gasification can reduce overall system carbon emissions at the source, even achieving zero-carbon chemistry. Currently, the main types of gasifiers are fixed-bed gasifiers, fluidized-bed gasifiers, and entrained-flow gasifiers. Among them, entrained-flow gasifiers can efficiently process biomass of various shapes and sizes (including powdered biomass) and have high gasification efficiency and syngas quality. Using a pressurized entrained-flow gasifier to gasify biomass under high temperature and high pressure can significantly improve biomass gasification efficiency and obtain high-conversion-rate feedstock gas, representing the main direction for the large-scale industrial application of biomass gasification in the future.

[0003] The biomass milling process system is a crucial factor restricting the development of biomass fluidized bed gasification. Cellulose and hemicellulose in biomass have high hardness, and the fibers in straw-type biomass are long and interwoven, which can form fiber clumps or knots in milling equipment. This easily leads to uneven particle texture after milling, resulting in inconsistent particle size and irregular shape. Consequently, conventional milling equipment produces low output and poor powder quality and stability.

[0004] Therefore, there is an urgent need to provide a new biomass milling solution. Utility Model Content

[0005] The purpose of this invention is to provide an integrated biomass carbonization and powdering device to at least partially solve the above-mentioned problems of the prior art.

[0006] To achieve the above objectives, this utility model provides an integrated biomass carbonization and pulverization apparatus, comprising: a raw material storage silo 1, a hopper 2, an exhaust gas heat recovery silo 10, an integrated carbonization and pulverization device 6, a filter 3, and an inert gas generator 5; wherein

[0007] The raw material storage silo 1 is connected to the hopper 2, through which biomass materials are transported to the exhaust gas heat recovery silo 10;

[0008] The exhaust gas heat recovery chamber 10 heats the biomass material with exhaust gas and then transports it to the integrated carbonization and pulverization equipment 6, outputting the exhaust gas after heat exchange.

[0009] The carbonization and pulverization integrated equipment 6 includes a coal mill 61 and a baking tube 62. The coal mill 61 grinds and heats the biomass material. The material whose particle size meets the first condition is sent to the baking tube 62 by hot air and baked in the baking tube 62. After baking, the powder that meets the second condition is sent to the filter 3 by hot air, and the powder that does not meet the second condition falls back to the coal mill 61.

[0010] Filter 3 transports the filtered powder to the gasifier via a conveying device, and outputs the filtered gas to the exhaust heat recovery chamber 10 and the inert gas generator 5 via a gas circulation pipeline;

[0011] The inert gas generator 5 is connected to the carbonization and pulverizing integrated equipment 6, and outputs heated gas to the coal mill 61 and the baking tube 62 respectively.

[0012] Preferably, the hopper 2 includes a vibrating hopper.

[0013] Preferably, the device further includes a quantitative feeder 8, which connects the hopper 2 and the integrated carbonization and pulverization equipment 6, and quantitatively outputs biomass material from the hopper 2 to the integrated carbonization and pulverization equipment 6.

[0014] Preferably, the carbonization and pulverization integrated equipment 6 also includes a separator 63 and a return powder pipe. The separator 63 separates the received biomass material. Powder that meets the second condition is sent to the filter 3, while powder that does not meet the second condition enters the return powder pipe and falls back to the coal mill 61.

[0015] Preferably, the baking tube 62 includes multiple air inlets, which are respectively connected to the inert gas generator 5, and receive the gas output from the inert gas generator 5 to perform baking and carbonization treatment on the biomass material.

[0016] Preferably, the device further includes an exhaust gas condenser 11, which is connected to the exhaust gas heat recovery chamber 10, for cooling and liquefying the gas discharged from the exhaust gas heat recovery chamber 10.

[0017] Preferably, the exhaust gas condenser 11 cools and liquefies the received gas to obtain wood vinegar, and the unliquefied gas is transported to the gasification furnace.

[0018] Preferably, the inert gas generator 5 further includes a fuel gas inlet and / or an auxiliary combustion gas inlet for receiving externally input fuel gas and / or auxiliary combustion gas.

[0019] Preferably, the device further includes a circulating fan 4 connected to a filter 3 to pressurize the gas output from the filter 3.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] This utility model embodiment adopts an integrated biomass carbonization and pulverization technology. Biomass, in the form of white granules or lumps, is directly processed into powder that meets the requirements of fluidized bed gasification and conveying. The system is simple, reduces energy consumption, and improves operational stability. Moreover, it classifies and treats the complex components in the gas phase generated during the carbonization process, improves the yield of the device, and solves the pollution problem of the emitted gas. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an integrated biomass carbonization and powdering device provided for an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate to understand the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a product or device comprising a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to such product or device.

[0025] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0027] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linked," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] This utility model embodiment provides an integrated biomass carbonization and powdering device, such as... Figure 1 As shown, it includes: a raw material storage silo 1, a hopper 2, an exhaust gas heat recovery silo 10, an integrated carbonization and pulverization equipment 6, a filter 3, and an inert gas generator 5; wherein...

[0031] The raw material storage silo 1 is connected to the hopper 2, through which biomass materials are transported to the exhaust gas heat recovery silo 10;

[0032] The exhaust gas heat recovery chamber 10 heats the biomass material with exhaust gas and then transports it to the integrated carbonization and pulverization equipment 6, outputting the exhaust gas after heat exchange.

[0033] The carbonization and pulverization integrated equipment 6 includes a coal mill 61 and a baking tube 62. The coal mill 61 grinds and heats the biomass material. The material whose particle size meets the first condition is sent to the baking tube 62 by hot air and baked in the baking tube 62. After baking, the powder that meets the second condition is sent to the filter 3 by hot air, and the powder that does not meet the second condition falls back to the coal mill 61.

[0034] Filter 3 transports the filtered powder to the gasifier via a conveying device, and outputs the filtered gas to the exhaust heat recovery chamber 10 and the inert gas generator 5 via a gas circulation pipeline;

[0035] The inert gas generator 5 is connected to the carbonization and pulverizing integrated equipment 6, and outputs heated gas to the coal mill 61 and the baking tube 62 respectively.

[0036] In a preferred embodiment, the hopper 2 includes a vibrating hopper. The hopper 2 can also be a standard hopper, without vibration function, where the material is conveyed downwards solely under gravity.

[0037] In a preferred embodiment, the device further includes a quantitative feeder 8, connected to the hopper 2 and the integrated carbonization and pulverization equipment 6, which quantitatively outputs biomass material from the hopper 2 to the integrated carbonization and pulverization equipment 6. The quantitative feeder 8 controls the feeding rate of the biomass raw materials into the integrated carbonization and pulverization equipment 6, thereby adjusting the pulverization efficiency and the stability of the quality of the prepared powder.

[0038] The integrated carbonization and pulverization equipment 6 includes a separator 63 and a return powder pipe (not shown in the figure). The separator 63 separates the received biomass material. Powder that meets the second condition (e.g., particle size) is sent to the filter 3, while powder that does not meet the second condition enters the return powder pipe and falls back to the coal mill 61. In a preferred embodiment, the baking pipe 62 includes multiple air inlets, each connected to an inert gas generator 5, to receive gas output from the inert gas generator 5 for baking and carbonization treatment of the biomass material.

[0039] The device may further include an exhaust gas condenser 11, connected to the exhaust gas heat recovery chamber 10, for cooling and liquefying the gas discharged from the exhaust gas heat recovery chamber 10. The exhaust gas condenser 11 cools and liquefies the received gas to obtain wood vinegar, and the unliquefied gas is then transported to the gasification furnace.

[0040] The inert gas generator 5 also includes a fuel gas inlet and / or an auxiliary combustion gas inlet for receiving externally input fuel gas and / or auxiliary combustion gas.

[0041] The device may also include a circulating fan 4 connected to a filter 3 to pressurize the gas output from the filter 3.

[0042] By adopting the integrated biomass carbonization and pulverization device provided in this utility model embodiment, biomass, in the form of white granules or lumps, is directly processed into powder that meets the requirements of gasification conveying in an airflow bed. Compared with the current mature process of first carbonizing into black granules in a fixed bed and then grinding, the process flow is shorter, the system is simpler, and it can save investment, reduce energy consumption and improve operational stability. Moreover, the proportion of particles with a diameter of less than 160 micrometers can reach more than 90%.

[0043] By classifying and treating the complex components in the gas phase generated during the carbonization process, the low-boiling-point components in the exhaust gas are cooled to produce high-value-added wood vinegar, while the high-boiling-point components are compressed and sent to the gasification furnace to completely decompose the organic components into syngas (CO+H2). On the one hand, the organic components can be fully utilized to improve the yield of the equipment, and on the other hand, the environmental emissions of VOSC and other pollutants in the exhaust gas can be completely solved.

[0044] By setting up an exhaust gas heat recovery chamber 10, heat recovery of the exhaust gas is achieved. The exhaust gas, at approximately 200 degrees Celsius, is cooled by raw materials in the exhaust gas heat recovery chamber, fully recovering the heat in the exhaust gas. Fuel gas and / or combustion gas are received in an inert gas generator 5. The exhaust gas received by the inert gas generator 5 heats the fuel gas and / or combustion gas, further recovering the heat in the exhaust gas and improving energy utilization efficiency.

[0045] In this invention, the temperature and flow rate at different addition points of the integrated carbonization and pulverization equipment can be adjusted according to different biomass materials to achieve the high yield requirements of biomass; by adjusting the material level in the exhaust gas heat recovery bin, the exhaust gas outlet temperature can be stabilized to maximize heat recovery; and according to the different nitrogen content requirements of downstream products, the inert gas generator can use air, oxygen-enriched gas, or pure oxygen as combustion-supporting gas.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An integrated biomass carbonization and powdering apparatus, characterized in that, include: The equipment includes a raw material storage silo (1), a hopper (2), an exhaust gas heat recovery silo (10), an integrated carbonization and pulverization equipment (6), a filter (3), and an inert gas generator (5); among which... The raw material storage silo (1) is connected to the hopper (2), through which biomass materials are transported to the exhaust gas heat recovery silo (10); The exhaust gas heat recovery chamber (10) heats the biomass material with exhaust gas and then transports it to the carbonization and pulverization integrated equipment (6), and outputs the exhaust gas after heat exchange; The carbonization and pulverization integrated equipment (6) includes a coal mill (61) and a baking tube (62). The coal mill (61) grinds and heats the biomass material. The material whose particle size meets the first condition is sent to the baking tube (62) by hot air and baked in the baking tube (62). After baking, the powder that meets the second condition is sent to the filter (3) by hot air, and the powder that does not meet the second condition falls back to the coal mill (61). The filter (3) transports the filtered powder to the gasifier through the conveying equipment, and outputs the filtered gas to the exhaust heat recovery chamber (10) and the inert gas generator (5) through the gas circulation pipeline; The inert gas generator (5) is connected to the carbonization and pulverizing integrated equipment (6) and outputs heated gas to the coal mill (61) and the baking tube (62) respectively.

2. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, The hopper (2) includes a vibrating hopper.

3. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, It also includes a quantitative feeder (8), which connects the hopper (2) and the carbonization and pulverization integrated equipment (6) to quantitatively output biomass materials from the hopper (2) to the carbonization and pulverization integrated equipment (6).

4. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, The carbonization and pulverizing integrated equipment (6) also includes a separator (63) and a return powder pipe. The separator (63) separates the received biomass material. Powder that meets the second condition is sent to the filter (3), while powder that does not meet the second condition enters the return powder pipe and falls back to the coal mill (61).

5. The integrated biomass carbonization and grinding apparatus according to claim 1 or 4, characterized in that, The baking tube (62) includes multiple air inlets, which are connected to an inert gas generator (5) to receive the gas output from the inert gas generator (5) to bake and carbonize the biomass material.

6. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, It also includes an exhaust gas condenser (11), which is connected to the exhaust gas heat recovery chamber (10) for cooling and liquefying the gas discharged from the exhaust gas heat recovery chamber (10).

7. The integrated biomass carbonization and grinding apparatus according to claim 6, characterized in that, The exhaust gas condenser (11) cools and liquefies the received gas to obtain wood vinegar, and then sends the unliquefied gas to the gasification furnace.

8. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, The inert gas generator (5) also includes a fuel gas inlet and / or an auxiliary combustion gas inlet for receiving externally input fuel gas and / or auxiliary combustion gas.

9. The integrated biomass carbonization and powdering apparatus according to claim 1, characterized in that, It also includes a circulating fan (4), which is connected to a filter (3) to pressurize the gas output from the filter (3).

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