Synthesis gas purification device, biomass methanol preparation equipment and synthesis gas purification method

Abstract

The invention discloses a synthesis gas purification device, biomass methanol preparation equipment and a synthesis gas purification method, and belongs to the technical field of biomass treatment equipment.The synthesis gas purification device comprises a shell, a heat preservation part, a synthesis gas nozzle and a first oxygen nozzle, and the shell is provided with a containing cavity; the heat preservation part is arranged in the containing cavity and provided with a heat preservation cavity, and the heat preservation cavity is provided with an opening communicating with the containing cavity; the synthesis gas nozzle penetrates through the shell and penetrates through the end, away from the opening in the axial direction of the shell, of the heat preservation part, and the synthesis gas nozzle communicates with the heat preservation cavity. The first oxygen nozzle is connected with the shell and penetrates through the heat preservation part, the first oxygen nozzle is communicated with the heat preservation cavity, and the spraying direction of the first oxygen nozzle is perpendicular to the axial direction and inclines to the radial direction of the shell. The first oxygen nozzle is arranged to introduce oxygen when the temperature in the heat preservation cavity is not high enough, so that the synthesis gas can react with the oxygen for combustion, and the purification effect on the synthesis gas is improved.

Description

Technical Field

[0001] This application belongs to the technical field of biomass treatment equipment, specifically relating to syngas purification devices, biomass methanol preparation equipment, and syngas purification methods. Background Technology

[0002] Syngas produced by biomass gasification mainly consists of carbon monoxide and hydrogen, but also contains harmful impurities such as ash, tar, methane, and ethylene. These harmful gases must be removed before the syngas can be further utilized.

[0003] However, when the syngas temperature is low, the conversion efficiency of tar, methane, and ethylene is low, resulting in poor purification of the syngas. Summary of the Invention

[0004] Objectives of this invention: This application provides a syngas purification device to solve the technical problem of poor purification effect; another objective of this application is to provide a biomass methanol preparation equipment; another objective of this application is to provide a syngas purification method.

[0005] Technical solution: This application provides a syngas purification device, comprising: A housing having a receiving cavity; A heat-insulating component is disposed in the receiving cavity, the heat-insulating component has a heat-insulating cavity with an opening, the opening communicating with the receiving cavity; A syngas nozzle is provided, which passes through the housing and through the end of the insulation member away from the opening along the axial direction of the housing. The syngas nozzle is in communication with the insulation cavity. A first oxygen nozzle is connected to the housing and passes through the insulation component. The first oxygen nozzle communicates with the insulation cavity. The injection direction of the first oxygen nozzle is perpendicular to the axial direction and inclined to the radial direction of the housing.

[0006] In some embodiments, the syngas purification device includes a nozzle group comprising a plurality of first oxygen nozzles, wherein the plurality of first oxygen nozzles in the nozzle group are arranged circumferentially spaced along the housing and are rotationally symmetrical about the central axis of the housing.

[0007] In some embodiments, the syngas purification device includes a plurality of the nozzle groups, which are spaced apart along the axial direction.

[0008] In some embodiments, the minimum distance L between two adjacent nozzle groups along the axial direction increases in the direction from the syngas nozzle to the opening.

[0009] In some embodiments, the number of the first oxygen nozzles in the nozzle group is reduced along the direction from the syngas nozzle to the opening.

[0010] In some embodiments, the syngas purification device further includes an ignition assembly, the ignition assembly comprising: Fuel nozzle, wherein the fuel nozzle passes through the housing assembly and communicates with the insulation cavity; and / or, An igniter, wherein the igniter is disposed within the housing assembly and a portion thereof is located within the insulation cavity.

[0011] In some embodiments, the syngas purification device includes a plurality of ignition components spaced apart along the axial direction; along the axial direction, at least a portion of at least one ignition component is located on the side of all the first oxygen nozzles facing away from the opening.

[0012] In some embodiments, the syngas purification device further includes: A downcomer is disposed in the receiving cavity and connected to the insulation component; the downcomer communicates with the opening and the receiving cavity. A quenching ring is connected to the downcomer.

[0013] In some embodiments, the syngas purification device further includes a defoaming element disposed in the receiving cavity, the defoaming element surrounding the downcomer and connecting the housing and the downcomer respectively.

[0014] In some embodiments, the housing has: An air outlet, which communicates with the receiving cavity; along the radial direction, the air outlet is located on one side of the downcomer; The discharge port is connected to the receiving cavity; along the axial direction, the discharge port is located on the side of the housing away from the synthesis gas nozzle along the axial direction; The liquid outlet is connected to the receiving cavity; along the axial direction, the liquid outlet is located between the material outlet and the air outlet.

[0015] Accordingly, this application also provides a biomass methanol production device, including a syngas purification device as described in any of the above embodiments.

[0016] Accordingly, this application also provides a method for purifying syngas, comprising: The first oxygen nozzle and the fuel nozzle are turned on respectively to introduce oxygen and fuel into the insulation chamber, and the igniter is started to ignite the fuel; Wait until the temperature sensor reading t in the insulation cavity is greater than or equal to the first preset temperature t1; Turn on the syngas nozzle and introduce syngas into the insulation chamber.

[0017] In some embodiments, it also includes: Wait until the reading t of the temperature sensor in the insulation cavity is greater than or equal to the second preset temperature t2; Close the fuel nozzle.

[0018] In some embodiments, it also includes: The temperature change rate r is calculated based on the temperature sensor reading t and time T. Adjust the flow rate of the fuel nozzle so that the temperature change rate r is less than or equal to the first preset temperature change rate R.

[0019] Beneficial Effects: Compared with the prior art, the syngas purification device provided in this application includes a shell, an insulation component, a syngas nozzle, and a first oxygen nozzle. The shell has a receiving cavity; the insulation component is disposed in the receiving cavity and has an insulation chamber with an opening communicating with the receiving cavity; the syngas nozzle is connected to the shell and passes through the insulation component at one end opposite to the opening along the axial direction of the shell, communicating with the insulation chamber; the first oxygen nozzle is connected to the shell and passes through the insulation component, communicating with the insulation chamber, and the spray direction of the first oxygen nozzle is perpendicular to the axial direction and inclined to the radial direction of the shell. This application improves the purification effect on the syngas by setting the first oxygen nozzle to introduce oxygen when the temperature in the insulation chamber is not high enough, thereby enabling the syngas to react and burn with oxygen. At the same time, the first oxygen nozzle, which is inclined radially, can make the gas in the insulation chamber form a swirling flow, promoting full gas mixing and forming a more uniform temperature field, which is beneficial to the cracking or conversion of tar, methane, and ethylene. In addition, the insulation components can reduce the loss of temperature inside the insulation cavity, allowing the temperature to rise more quickly, reducing the oven drying time, and improving purification efficiency. Attached Figure Description

[0020] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the syngas purification device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the nozzle assembly in the syngas purification device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the nozzle assembly in the syngas purification device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the nozzle assembly in the syngas purification device provided in the embodiments of this application; Figure 5This is a schematic diagram of the nozzle assembly in the syngas purification device provided in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures: 100-Shell; 110-Receiving cavity; 120-Central shaft; 130-Gas outlet; 140-Material outlet; 150-Liquid outlet; 160-Cooling water; 200-Insulation component; 210-Insulation cavity; 220-Opening; 300-Synthesis gas nozzle; 400-Nozzle assembly; 410-First oxygen nozzle; 500-Ignition assembly; 510-Fuel nozzle; 520-Igniter; 600-Downcomer; 700-Quenching ring; 800-Bubble-breaking component; 900-Second oxygen nozzle; X-Radial; Y-Circumferential; Z-Axial. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0025] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0026] Syngas produced by biomass gasification mainly consists of carbon monoxide and hydrogen, but also contains harmful impurities such as ash, tar, methane, and ethylene. These harmful gases must be removed before the syngas can be further utilized.

[0027] However, when the syngas temperature is low, the cracking or conversion efficiency of tar, methane, and ethylene is low, resulting in poor purification of the syngas.

[0028] To address the aforementioned technical problem of poor syngas purification performance, the first embodiment of this application provides a syngas purification device. Please refer to... Figure 1 The syngas purification device includes a housing 100, an insulation component 200, a syngas nozzle 300, and a first oxygen nozzle 410. The housing 100 has a receiving cavity 110. The insulation component 200 is disposed in the receiving cavity 110 and has an insulation cavity 210 with an opening 220 that communicates with the receiving cavity 110. The syngas nozzle 300 passes through the housing 100 and is disposed at one end of the insulation component 200 away from the opening 220 along the axial direction Z of the housing 100. The syngas nozzle 300 communicates with the insulation cavity 210. The first oxygen nozzle 410 is connected to the housing 100 and passes through the insulation component 200. The first oxygen nozzle 410 communicates with the insulation cavity 210. The spray direction of the first oxygen nozzle 410 is perpendicular to the axial direction Z and inclined to the radial direction X of the housing 100.

[0029] It is understandable that when the temperature inside the insulation cavity 210 reaches 500°C to 600°C, the syngas can spontaneously combust with oxygen, thereby further increasing the temperature inside the insulation cavity 210.

[0030] In some embodiments, the syngas nozzle 300 can eject syngas with a swirling effect.

[0031] Firstly, in the above embodiment, by setting a first oxygen nozzle 410, oxygen is introduced into the insulation cavity 210 when the temperature is insufficient, so that the synthesis gas can mix with the oxygen and spontaneously combust, thereby increasing the temperature inside the insulation cavity 210 and thus improving the purification efficiency of harmful gases such as tar, methane, and ethylene inside the insulation cavity 210.

[0032] Secondly, in the above embodiments, the inclined nozzle arrangement allows the gas in the insulation chamber 210 to form a swirling flow, resulting in a more uniform mixing of syngas and oxygen and better combustion efficiency. Simultaneously, it also throws the ash residue from the syngas towards the inner surface of the shell 100, achieving ash residue separation, reducing the burden of subsequent water washing, and lowering the risk of equipment blockage.

[0033] Thirdly, in the above embodiments, the heat insulation component 200 can reflect heat, thereby further uniformizing the temperature field in the heat insulation cavity 210, so that the temperature in the heat insulation cavity 210 can be raised as soon as possible, and the purification efficiency can also be further improved.

[0034] Fourthly, in the above embodiments, the injection direction of the syngas nozzle 300 intersects with the injection direction of the first oxygen nozzle 410, which facilitates the mixing of oxygen and syngas and enhances the mixing effect. Furthermore, since the insulation cavity 210 has a large dimension in the Z-axis direction, the syngas nozzle 300 and the opening 220, respectively located at both ends of the Z-axis direction, can extend the path of the syngas through the insulation cavity 210, increase the residence time of the syngas within the insulation cavity 210, and improve the purification efficiency.

[0035] In some embodiments, please refer to Figures 1 to 5 The syngas purification device includes a nozzle group 400, which includes a plurality of first oxygen nozzles 410. The plurality of first oxygen nozzles 410 in the nozzle group 400 are arranged at intervals along the circumferential Y direction of the housing 100 and are rotationally symmetrical about the central axis 120 of the housing 100.

[0036] In some embodiments, each first oxygen nozzle 410 in the same nozzle group 400 is tilted in the same direction and at the same angle to the radial X. The same direction means that, in Figures 2 to 5 In the same nozzle group 400, the first oxygen nozzle 410 is simultaneously tilted in a clockwise or counterclockwise direction with radial direction X, so as to be rotationally symmetrical about the central axis 120.

[0037] Specifically, please refer to Figures 2 to 5 The number of first oxygen nozzles 410 can be any one of 2, 3, 4, 5, 6, 7, 8, 9, or 10.

[0038] Firstly, in the above embodiments, the nozzle group 400 includes a plurality of first oxygen nozzles 410 arranged circumferentially Y-spaced and centrally symmetrical, which can further improve the uniformity of oxygen in the insulation cavity 210, reduce the possibility of excessively high or low local oxygen concentration, and thereby improve the uniformity of the temperature field in the insulation cavity 210.

[0039] Secondly, in the above embodiments, the multiple first oxygen nozzles 410 can cooperate with the syngas nozzle 300 during the injection process, so that oxygen and syngas are fully mixed on the cross section perpendicular to the central axis to form a stable vortex. This not only promotes the cracking or conversion reaction of tar, methane, and ethylene, but also uses the centrifugal effect of the vortex to throw ash and slag onto the inner surface of the shell 100, achieving the dual effect of removing harmful gases and separating ash and slag, thereby improving purification efficiency while reducing the risk of equipment blockage.

[0040] Thirdly, in the above embodiments, rotational symmetry enables the ejected oxygen to form concentric tangent circles on the cross-section, thereby improving mixing efficiency.

[0041] In some embodiments, please refer to Figure 1The syngas purification device includes multiple nozzle groups 400, which are arranged at Z-intervals along the axial direction.

[0042] That is, it includes a multi-layer nozzle group 400 arranged at Z-intervals along the axial direction.

[0043] In the above embodiment, the syngas flows along the Z-axis and is sequentially mixed with oxygen ejected from different nozzle groups 400 to prolong the mixing time between the syngas and oxygen, promote the cracking and conversion of tar, methane, and ethylene, and improve purification efficiency. Simultaneously, the stratified oxygen supply and swirling effect of multiple nozzle groups 400 combine to make the temperature field more uniform in both the direction perpendicular to the Z-axis and along the Z-axis, reducing localized overcooling or overheating within the insulation cavity 210 along the Z-axis, lowering the risk of overheating in the equipment, and improving system stability.

[0044] In some embodiments, please refer to Figure 1 Along the direction from the syngas nozzle 300 to the opening 220, the minimum distance L between two adjacent nozzle groups 400 along the axial direction Z increases.

[0045] That is, along the direction from the synthesis gas nozzle 300 to the opening 220, the first oxygen nozzle 410 is distributed with increasing spacing.

[0046] Specifically, along the Z-axis, among two adjacent L values, the value of L closer to opening 220 is greater than or equal to the value of L farther from opening 220.

[0047] Understandably, due to the presence of the insulation component 200, the syngas loses less heat and reaches a higher temperature than the syngas just entering the insulation chamber 210 as it moves axially towards the opening 220 after combustion. In the above embodiment, the density of the nozzle assembly 400 along the axial direction 220 is reduced as it approaches the opening 220, thereby achieving oxygen conservation and improving economic efficiency. Simultaneously, it also prevents excessively high local temperatures in the insulation chamber 210 near the opening 220 along the axial direction 220, thus avoiding damage to the insulation component 200 and extending its service life.

[0048] In some embodiments, the number of first oxygen nozzles 410 in the nozzle group 400 is reduced along the direction from the synthesis gas nozzle 300 to the opening 220.

[0049] Understandably, due to the presence of the insulation component 200, the synthesis gas loses less heat and reaches a higher temperature than the synthesis gas just entering the insulation chamber 210 as it moves axially towards the opening 220 after combustion. In the above embodiment, by reducing the number of first oxygen nozzles 410 in the same nozzle group 400 as it approaches the opening 220, oxygen conservation is achieved, improving economic efficiency. Simultaneously, it also prevents excessively high local temperatures in the insulation chamber 210 near the opening 220 in the axial direction Z, thus avoiding damage to the insulation component 200 and extending its service life.

[0050] In some embodiments, please refer to Figure 1 The syngas purification device also includes an ignition assembly 500, which includes a fuel nozzle 510 and / or an igniter 520. The fuel nozzle 510 passes through the housing 100 assembly and communicates with the insulation cavity 210. The igniter 520 passes through the housing 100 assembly, and a portion of the igniter 520 is located in the insulation cavity 210.

[0051] In some embodiments, the ignition assembly 500 includes only a fuel nozzle 510; in some embodiments, the ignition assembly 500 includes only an igniter 520; in some embodiments, the ignition assembly 500 includes a fuel nozzle 510 and an igniter 520.

[0052] In some embodiments, the syngas purification device includes at least two ignition components 500, one of which includes only a fuel nozzle 510 and the other includes only an igniter 520.

[0053] In some embodiments, the syngas purification device includes at least two ignition components 500, one of which includes only a fuel nozzle 510, and the other includes both a fuel nozzle 510 and an igniter 520.

[0054] In some embodiments, the syngas purification device includes at least two ignition components 500, one of which includes only an igniter 520, and the other includes both a fuel nozzle 510 and an igniter 520.

[0055] Understandably, the fuel nozzle 510 and the igniter 520 can work together or independently.

[0056] Specifically, when the temperature inside the insulation cavity 210 is lower than the auto-ignition temperature of the syngas and the effective gas content is low, the fuel nozzle 510 introduces external fuel, and the igniter 520 is used to raise the local temperature to ignite the fuel and syngas; when the temperature inside the insulation cavity 210 has reached the auto-ignition condition, and the effective gas content in the syngas is low, after the fuel nozzle 510 introduces external fuel, the syngas and fuel mix and can ignite automatically, without the need for the igniter 520 to work; when the temperature inside the insulation cavity 210 has not reached the auto-ignition condition, and the effective gas content in the syngas is sufficient, the igniter 520 works to raise the local temperature to ignite the syngas, without the need for the fuel nozzle 510 to work.

[0057] It is understandable that the temperature inside the insulation chamber 210 needs to be higher than the first preset temperature for the syngas and oxygen mixture to spontaneously combust.

[0058] Firstly, in the above embodiment, by setting an igniter 520 so that the synthesis gas and oxygen are ignited when the temperature inside the insulation cavity 210 is at the first preset temperature, the temperature inside the insulation cavity 210 can reach above the first preset temperature, thereby enabling the synthesis gas to further spontaneously combust.

[0059] Secondly, in the above embodiment, by setting the fuel nozzle 510, fuel can be introduced into the heat preservation chamber 210, so that when the heat preservation chamber 210 is below the first preset temperature or when the effective gas content in the syngas is low, the combustion can be more intense, thereby increasing the temperature rise rate in the heat preservation chamber 210 and shortening the heating time. Here, the effective gas refers to carbon monoxide and hydrogen.

[0060] In some embodiments, please refer to Figure 1 The syngas purification device includes a plurality of ignition components 500, which are spaced apart along the axial direction Z; along the axial direction Z, at least a portion of at least one ignition component 500 is located on the side of all first oxygen nozzles 410 away from the outlet 220.

[0061] Firstly, in the above embodiments, by setting multiple ignition components 500 in the axial Z direction, the combustion status of the heat preservation cavity 210 in the axial Z direction can be differentiated and controlled, thereby making the temperature field of the heat preservation cavity 210 in the axial Z direction more uniform, promoting more effective conversion of tar, methane and ethylene, improving purification efficiency and reducing energy consumption.

[0062] Secondly, in the above embodiments, by disposing at least a portion of at least one ignition component 500 on the side of all first oxygen nozzles 410 away from the outlet 220, such that at least one ignition component 500 is located relatively close to the syngas nozzle 300, the low-temperature syngas can be ignited as soon as possible, thus shortening the heating time.

[0063] In some embodiments, please refer to Figure 1The syngas purification device also includes a downcomer 600 and a quench ring 700. The downcomer 600 is disposed in the receiving cavity 110 and connected to the insulation component 200. The downcomer 600 connects the opening 220 and the receiving cavity 110. The quench ring 700 is connected to the downcomer 600.

[0064] Firstly, in the above embodiment, the gas that has already undergone high-temperature reaction is drawn out by setting a downcomer 600, and the drawn-out gas is cooled and washed by a quench ring 700.

[0065] Secondly, in the above embodiment, the cooling ring 700 is disposed on the downcomer 600 located on one side of the insulation component 200 to reduce the possibility that the cooling ring 700 will carry away the heat in the insulation cavity 210, reduce the impact of the cooling components on the insulation cavity 210, and thus make the insulation effect in the insulation cavity 210 better.

[0066] In some embodiments, please refer to Figure 1 The syngas purification device also includes a bubble-breaking element 800, which is disposed in the receiving cavity 110, surrounds the downcomer 600, and is connected to the housing 100 and the downcomer 600 respectively.

[0067] Understandably, during the use of this syngas purification device, the end of the containment cavity 110 away from the insulation member 200 along the axial direction Z has cooling water 160, and the outlet of the downcomer 600 is submerged in cooling water 160 in order to wash and cool the gas drawn out from the downcomer 600.

[0068] In the above embodiments, the bubble-breaking component 800 can break large bubbles in the cooling water 160 into small bubbles, thereby increasing the contact area between the gas and the cooling water 160, improving the cooling efficiency of the cooling water, and can also wash the syngas and separate the ash and slag carried by the syngas.

[0069] In some embodiments, the housing 100 has an air outlet 130, a material outlet 140, and a liquid outlet 150. The air outlet 130 communicates with the receiving cavity 110. Along the radial direction X, the air outlet 130 is located on one side of the downcomer 600. The material outlet 140 communicates with the receiving cavity 110. Along the axial direction Z, the material outlet 140 is located on the side of the housing 100 away from the synthesis gas nozzle 300 along the axial direction Z. The liquid outlet 150 communicates with the receiving cavity 110. Along the axial direction Z, the liquid outlet 150 is located between the material outlet 140 and the air outlet 130.

[0070] The air outlet 130 is located above the surface of the cooling water 160.

[0071] In some embodiments, the syngas purification device further includes an anti-clogging component disposed in the receiving cavity 110, which covers the gas outlet 130.

[0072] In some embodiments, the axial direction Z is the direction of gravity, the ash discharge port is located at the bottom of the housing 100, and the syngas nozzle 300 is located at the top of the housing 100.

[0073] In the above embodiment, the liquid outlet 150 is used to draw out cooling water 160, and the material outlet 140 is used to discharge the ash and slag washed out.

[0074] In some embodiments, the syngas purification device further includes a second oxygen nozzle 900, which passes through the insulation member 200 and communicates with the insulation cavity 210. The second oxygen nozzle 900 is disposed on one side of the syngas nozzle 300 along the radial X direction, and the second oxygen nozzle 900 is inclined in the radial X direction and inclined in the axial Z direction.

[0075] The second oxygen nozzle 900, which is inclined radially (X) and axially (Z), is also used to generate swirl, so that the oxygen and syngas are mixed more evenly.

[0076] In some embodiments, there are multiple second oxygen nozzles 900, which are arranged around the syngas nozzle 300 and are rotationally symmetrical about the central axis 120, so that the syngas and oxygen are mixed more evenly.

[0077] Accordingly, this application also provides a biomass methanol production device, including a syngas purification device as described in any of the above embodiments.

[0078] Accordingly, this application also provides a method for purifying syngas, comprising: The first oxygen nozzle 410 and the fuel nozzle 510 are opened respectively to introduce oxygen and fuel into the insulation chamber 210, and the igniter 520 is started to ignite the fuel. Wait for the temperature sensor reading t in the insulation cavity 210 to be greater than or equal to the first preset temperature t1; Turn on the syngas nozzle 300 to introduce syngas into the insulation chamber 210.

[0079] In some embodiments, the first preset temperature t1 satisfies: 500℃≤t1≤600℃.

[0080] In the above embodiment, waiting for the temperature sensor reading t inside the insulation cavity 210 to be greater than or equal to the first preset temperature t1 enables the syngas to react with oxygen and spontaneously combust after entering the insulation cavity 210, reducing the possibility that the temperature of the insulation cavity 210 is still low when the syngas passes through the insulation cavity 210, resulting in incomplete purification of the syngas, and improving the degree of syngas purification.

[0081] In some embodiments, it also includes: Wait for the temperature sensor reading t in the insulation cavity 210 to be greater than or equal to the second preset temperature t2; Close fuel nozzle 510.

[0082] In some embodiments, the second preset temperature t2 satisfies: 1200℃≤t2.

[0083] It is understandable that when the temperature inside the insulation chamber 210 reaches the second preset temperature t2, the syngas is already capable of undergoing a high-temperature pyrolysis reaction, eliminating the need to introduce additional fuel. In the above embodiment, determining whether to continue introducing fuel based on temperature allows for rapid judgment and reduces the difficulty of syngas purification.

[0084] In some embodiments, when the temperature sensor reading t is greater than or equal to a first preset temperature t1, the fuel nozzle 510 is shut off. This allows the syngas nozzle 300 to react with oxygen and spontaneously combust, thereby maintaining the temperature inside the insulation chamber 210.

[0085] In some embodiments, it also includes: The rate of temperature change r is calculated based on the temperature sensor reading t and time T. Adjust the flow rate of the fuel nozzle 510 so that the temperature change rate r is less than or equal to the first preset temperature change rate R.

[0086] In some embodiments, the first preset temperature change rate R satisfies: R≤50℃ / min.

[0087] In the above embodiments, by limiting the temperature change rate r, the possibility of damage to the insulation component 200 is reduced.

[0088] The foregoing has provided a detailed description of a syngas purification device, a biomass methanol preparation equipment, and a syngas purification method provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still 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 scope of the technical solutions of the embodiments of this application.

Claims

1. A syngas purification device, characterized in that, include: The housing (100) has a receiving cavity (110). A heat insulation component (200) is disposed in the receiving cavity (110). The heat insulation component (200) has a heat insulation cavity (210) with an opening (220) that communicates with the receiving cavity (110). Syngas nozzle (300) is inserted through the housing (100) and through the end of the insulation member (200) away from the opening (220) along the axial direction (Z) of the housing (100). The syngas nozzle (300) is connected to the insulation cavity (210). The first oxygen nozzle (410) is connected to the housing (100) and passes through the insulation member (200). The first oxygen nozzle (410) communicates with the insulation cavity (210). The injection direction of the first oxygen nozzle (410) is perpendicular to the axial direction (Z) and inclined to the radial direction (X) of the housing (100).

2. The syngas purification device according to claim 1, characterized in that, The syngas purification device includes a nozzle group (400), which includes a plurality of first oxygen nozzles (410). The plurality of first oxygen nozzles (410) in the nozzle group (400) are spaced apart along the circumferential (Y) direction of the housing (100) and are rotationally symmetrical about the central axis (120) of the housing (100).

3. The syngas purification device according to claim 2, characterized in that, The syngas purification device includes a plurality of nozzle groups (400), which are spaced apart along the axial direction (Z).

4. The syngas purification device according to claim 3, characterized in that, Along the direction from the syngas nozzle (300) to the opening (220), the minimum distance L between two adjacent nozzle groups (400) along the axial direction (Z) increases.

5. The syngas purification device according to claim 3, characterized in that, Along the direction from the syngas nozzle (300) to the opening (220), the number of the first oxygen nozzles (410) in the nozzle group (400) decreases.

6. The syngas purification device according to claim 1, characterized in that, The syngas purification device further includes an ignition assembly (500), which comprises: A fuel nozzle (510) is provided through the housing (100) assembly and communicates with the insulation cavity (210); and / or, Igniter (520), the igniter (520) is inserted through the housing (100) assembly, and a portion of the igniter (520) is located in the insulation cavity (210).

7. The syngas purification device according to claim 5, characterized in that, The syngas purification device includes a plurality of ignition components (500) spaced apart along the axial direction (Z); along the axial direction (Z), at least a portion of at least one ignition component (500) is located on the side of all the first oxygen nozzles (410) facing away from the opening (220).

8. The syngas purification device according to claim 1, characterized in that, The syngas purification device also includes: A downcomer (600) is disposed in the receiving cavity (110) and connected to the insulation component (200). The downcomer (600) connects the opening (220) and the receiving cavity (110). A quench ring (700) is connected to the downcomer (600).

9. The syngas purification device according to claim 8, characterized in that, The syngas purification device further includes a defoaming element (800), which is disposed in the receiving cavity (110), surrounds the downcomer (600), and is connected to the housing (100) and the downcomer (600) respectively.

10. The syngas purification device according to claim 9, characterized in that, The housing (100) has: An air outlet (130) is connected to the receiving cavity (110); along the radial direction (X), the air outlet (130) is located on one side of the downcomer (600); The discharge port (140) is connected to the receiving cavity (110); along the axial direction (Z), the discharge port (140) is located on the side of the housing (100) away from the synthesis gas nozzle (300) along the axial direction (Z); The liquid outlet (150) is connected to the receiving cavity (110); along the axial direction (Z), the liquid outlet (150) is located between the discharge port (140) and the air outlet (130).

11. A biomass methanol production device, characterized in that, Includes a syngas purification device as described in any one of claims 1 to 10.

12. A method for purifying syngas, characterized in that, include: The first oxygen nozzle (410) and the fuel nozzle (510) are turned on respectively to introduce oxygen and fuel into the insulation chamber (210), and the igniter (520) is started to ignite the fuel; Wait for the temperature sensor reading t in the insulation cavity (210) to be greater than or equal to the first preset temperature t1; Turn on the syngas nozzle (300) and introduce syngas into the insulation chamber (210).

13. The syngas purification method according to claim 12, characterized in that, Also includes: Wait for the temperature sensor reading t in the insulation cavity (210) to be greater than or equal to the second preset temperature t2; Close the fuel nozzle (510).

14. The syngas purification method according to claim 13, characterized in that, Also includes: The temperature change rate r is calculated based on the temperature sensor reading t and time T. Adjust the flow rate of the fuel nozzle (510) so that the temperature change rate r is less than or equal to the first preset temperature change rate R.

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