System device for biomass gasification through oxygen-enriched flue gas circulation

Abstract

The invention discloses a system device for biomass gasification through oxygen-enriched flue gas circulation, and belongs to the technical field of biomass energy and gasification engineering, the system device comprises a reactor unit, the reactor unit comprises a gasification furnace and a temperature regulation and control and display module for monitoring and regulating the temperature in the gasification furnace, and a flow deflector is arranged in the gasification furnace; the gas source supply unit is connected with a gas inlet of the gasification furnace through the gas mixing system; and the gas detection unit is connected with the reaction end of the gasification furnace and is used for analyzing components of gasification reaction products. By arranging the flow deflectors, mixing of multiple gasifying agents is greatly promoted, meanwhile, the contact area of the gasifying agents and biomass is remarkably increased, and therefore the energy conversion efficiency in the biomass gasifying process is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of biomass energy and gasification engineering, and particularly relates to a system device for circulating oxygen-rich flue gas for biomass gasification. BACKGROUND

[0002] In recent years, the global energy structure is transforming towards renewable energy in order to reduce carbon emissions caused by the use of fossil fuels. Biomass has become one of the key paths to achieve low-carbon energy development due to its wide source and carbon neutral characteristics. Biomass gasification is an important technology for converting biomass into combustible gas and has a wide application prospect in the field of clean energy. However, traditional biomass gasification furnace devices have many problems. Studies have shown that the contact between the gasification agent and the biomass in the traditional gasification furnace is uneven, which can lead to insufficient gasification reaction and affect the generation efficiency and quality of gas fuel. At the same time, the phenomenon of gas backflow at the upper end and rapid heat loss dispersion is common, resulting in low energy utilization rate. The thermal efficiency of traditional gasification furnaces is usually difficult to break through a certain bottleneck, and the impurity content in the gas fuel is high, which limits its application in a wider field. Under the background of increasing energy demand and carbon neutralization target, improving the efficiency and energy utilization rate of biomass gasification and optimizing the quality of gas fuel have become key problems to be solved in the field of biomass energy and gasification engineering. SUMMARY

[0003] In order to solve the above problems, the application adopts the following technical solutions: A system device for circulating oxygen-rich flue gas for biomass gasification, comprising: A reactor unit, the reactor unit comprises a gasification furnace and a temperature control and display module for monitoring and adjusting the temperature in the gasification furnace, and a guide vane is arranged in the gasification furnace; A gas source supply unit, the gas source supply unit is connected with the gas inlet of the gasification furnace through a gas mixing system; A gas detection unit, the gas detection unit is connected with the reaction end of the gasification furnace for analyzing the composition of the gasification reaction products.

[0004] Further, the guide vane is arranged at the upper end of the reaction area of the gasification furnace for guiding the flow direction of the gasification agent to form a flow field conducive to full contact with the biomass.

[0005] Further, the gas source supply unit comprises an oxygen cylinder and a flue gas cylinder, the oxygen cylinder and the flue gas cylinder are respectively connected with the gas mixing system, the gas mixing system is used for mixing oxygen and flue gas in a predetermined ratio, forming oxygen-rich gasification agent which is then sent into the gasification furnace through the gas inlet.

[0006] Further, the gas detection unit comprises a gas chromatograph and a gas detection end. The gas chromatograph is connected with the reaction end of the gasification furnace, and is used for analyzing the components of the gas product generated by the gasification reaction; the gas detection end is connected with the gas chromatograph, and is used for displaying and recording the gas composition related data obtained by the gas chromatograph analysis, so as to evaluate the quality of the gasification product.

[0007] Further, the gasification furnace further comprises a gasification area for accommodating the biomass raw material and carrying out the gasification reaction.

[0008] Further, the gasification area is further provided with biomass.

[0009] Beneficial effects: 1. The present application greatly promotes the mixing of various gasification agents by setting the guide vane, significantly improves the contact area of the gasification agent and the biomass, and effectively improves the energy conversion efficiency of the biomass gasification process.

[0010] 2. The recycling of the oxygen-enriched flue gas realizes the internal circulation of energy, greatly reduces the total energy consumption of the system, improves the thermal efficiency of the system, and meets the development trend of energy efficient utilization. The technology can improve the quality of gaseous fuel, reduce the content of impurities, and expand the application range of gaseous fuel.

[0011] 3. The present application solves the problems of uneven contact between gasification agent and biomass, backflow of gas at the upper end, and low energy utilization rate caused by rapid heat loss and dispersion in the traditional gasification furnace device to a certain extent, provides strong technical support for clean energy development and carbon neutralization target, and has important economic value and social significance. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the system device for recycling the oxygen-enriched flue gas for biomass gasification of the present application; Explanation of reference signs: 1, gasification furnace; 2, gasification area; 3, temperature regulation and display module; 4, biomass; 5, guide vane; 6, gas mixing system. DETAILED DESCRIPTION

[0013] This part will describe the specific embodiments of the present application in detail, and the preferred embodiments of the present application are shown in the drawings. The drawings serve to supplement the description in the text part of the specification, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application. However, it cannot be understood as a limitation on the protection scope of the present application.

[0014] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0015] In the description of the present application, one or more is understood as one or more, more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0016] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0017] Embodiment 1

[0018] Reference Figure 1 A system device for circulating oxygen-enriched flue gas for biomass gasification, comprising: A reactor unit, the reactor unit comprising a gasifier 1 and a temperature control and display module 3 for monitoring and adjusting the temperature in the gasifier, and a guide vane 5 arranged in the gasifier 1; A gas source supply unit, the gas source supply unit being connected to the gas inlet of the gasifier 1 through a gas mixing system 6; A gas detection unit, the gas detection unit being connected to the reaction end of the gasifier 1 for analyzing the composition of the gasification reaction products.

[0019] In this embodiment, the temperature control and display module 3 comprises a temperature sensor and a controller, which monitors and adjusts the temperature of the gasification area in real time.

[0020] Preferably, the guide vane 5 is arranged at the upper end of the reaction area of the gasifier 1, for guiding the flow direction of the gasification agent, forming a flow field that is conducive to full contact with the biomass.

[0021] Preferably, the gas source supply unit comprises an oxygen cylinder and a flue gas cylinder, the oxygen cylinder and the flue gas cylinder are respectively connected to the gas mixing system, the gas mixing system is used to mix oxygen and flue gas in a predetermined ratio, and the oxygen-enriched gasification agent is sent into the gasifier through the gas inlet.

[0022] In this embodiment, the flue gas is derived from internal circulation or external supply of the system.

[0023] Preferably, the gas detection unit comprises a gas chromatograph and a gas detection end; The gas chromatograph is connected with the reaction end of the gasifier 1, and is used for analyzing the components of the gas product generated by the gasification reaction; the gas detection end is connected with the gas chromatograph, and is used for displaying and recording the gas composition related data obtained by the gas chromatograph analysis, so as to evaluate the quality of the gasification product.

[0024] Preferably, the gasifier 1 further comprises a gasification area 2 for accommodating the biomass raw material and carrying out the gasification reaction.

[0025] Preferably, the gasification area 2 is further provided with the biomass 4.

[0026] Working principle: oxygen and flue gas are mixed in the gas mixing system to form an oxygen-rich gasification agent; the gasification agent is guided by the guide vane to form a uniform flow field in the gasifier; in the gasification area, the biomass reacts with the oxygen-rich gasification agent to generate combustible gas; the optimal reaction temperature is maintained by the temperature control unit; the gas composition is analyzed by the gas chromatograph to ensure the quality of the gas, and the whole system realizes energy recycling, reduces energy consumption, and improves the gasification efficiency.

[0027] The above is only the preferred embodiment of the present application, and does not limit the technical scope of the present application, so any slight modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment still belongs to the scope of the technical solution of the present application.

Claims

1. A system device for oxygen-enriched flue gas recirculation for biomass gasification, characterized in that, include: The reactor unit includes a gasifier and a temperature control and display module for monitoring and regulating the temperature inside the gasifier, and the gasifier is equipped with guide vanes. A gas supply unit is connected to the gas inlet of the gasifier via a gas mixing system. A gas detection unit is connected to the reaction end of the gasifier and is used to analyze the composition of the gasification reaction products.

2. The system device for oxygen-enriched flue gas recirculation for biomass gasification according to claim 1, characterized in that, The guide vane is located at the upper end of the reaction zone of the gasifier to guide the flow direction of the gasifying agent and form a flow field that is conducive to full contact with biomass.

3. The system device for oxygen-enriched flue gas recirculation for biomass gasification according to claim 1, characterized in that, The gas supply unit includes an oxygen cylinder and a flue gas cylinder. The oxygen cylinder and the flue gas cylinder are respectively connected to the gas mixing system. The gas mixing system is used to mix oxygen and flue gas in a preset ratio to form an oxygen-enriched gasifying agent, which is then sent into the gasification furnace through the gas inlet.

4. The system device for oxygen-enriched flue gas recirculation for biomass gasification according to claim 1, characterized in that, The gas detection unit includes a gas chromatograph and a gas detection terminal; The gas chromatograph is connected to the reaction end of the gasification furnace and is used to perform component analysis on the gaseous products generated by the gasification reaction; the gas detection end is connected to the gas chromatograph and is used to display and record the gas composition data obtained by the gas chromatograph analysis, so as to evaluate the quality of the gasification products.

5. A system device for oxygen-enriched flue gas recirculation for biomass gasification according to claim 1, characterized in that, The gasifier also includes a gasification zone for containing biomass feedstock and carrying out the gasification reaction.

6. A system device for oxygen-enriched flue gas recirculation for biomass gasification according to claim 5, characterized in that, Biomass is also located within the gasification area.

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