Oxygen-enriched high-temperature fluidized bed gasifier

Abstract

The utility model discloses an oxygen-enriched high-temperature fluidized bed gasification furnace, which relates to the technical field of solid waste treatment and comprises a gasification furnace body, a gasification assembly and a crushing device, a smoke outlet is formed in the top of the gasification furnace body; the gasification assembly comprises a gasification igniter, a gasification raw material feeding mechanism, a hot blast stove assembly and a gasification gas filling pipe; the air outlet end of the hot blast stove assembly is connected to the bottom position of the peripheral wall of the gasification furnace body and is used for providing hot air capable of doing circular motion around the inner wall of the gasification furnace body into the gasification furnace body; the discharging end of the gasification raw material feeding mechanism is connected to the bottom position of the peripheral wall of the gasification furnace body; the gasification igniter is mounted on the gasification furnace body and is used for igniting gasification raw materials to generate flue gas; the gasification gas filling pipe is used for adding oxygen into the gasification furnace body; and the crushing device is mounted in the gasification furnace body and is used for crushing ash in the generated flue gas. The technical problems that in an existing gasification technology, the solid waste heat value is low, and generated ash needs to be subjected to secondary gasification can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of solid waste treatment, and in particular to an oxygen-enriched high-temperature fluidized bed gasifier. Background Art

[0002] With the rapid development of the national economy, the amount of organic solid waste, led by urban domestic waste, has increased dramatically, and the problem of its treatment is imminent.

[0003] At present, my country's garbage disposal mainly adopts landfill, composting, incineration and gasification. Each process and method has its own advantages and disadvantages. Among them, gasification is popular because it has similar volume reduction as incineration, can improve fuel quality and has simple flue gas treatment.

[0004] Gasification technology is to send the garbage into a gasifier, heat it through an external heat source or partially burn it to increase its temperature, and decompose the organic combustible substances into combustible gas and ash. The combustible gas then enters the subsequent process to burn and release heat, realizing the resource utilization of its energy, while the waste residue is melted into liquid at high temperature and then cooled to form vitrified slag, achieving harmless treatment.

[0005] According to the form of solid waste gasification treatment, it is divided into fixed gasification and fluidized bed gasification, among which fluidized bed gasification has been widely promoted in the market. Fluidized bed gasification is to carry solid waste through airflow, and the solid waste is gasified by contact with high-temperature airflow. Its process advantages include large contact area between solid waste and high-temperature gas, high gasification efficiency, and small amount of residual ash after gasification.

[0006] However, solid waste gasification technology still has the following problems: First, the calorific value of solid waste is low, generally around 1,000 kcal, and it is difficult to maintain a high temperature in the gasifier through the calorific value of the solid waste itself. If the gasifier cannot reach the appropriate temperature, the gasification rate cannot be guaranteed. At the same time, common harmful substances such as dioxins and tars require high temperatures above 800°C to be further processed. Second, the ash produced needs to be gasified twice according to the situation, which affects the gasification treatment efficiency and increases the cost of use. Utility Model Content

[0007] In view of this, the purpose of this application is to provide an oxygen-enriched high-temperature fluidized bed gasifier to solve the technical problems of low calorific value of solid waste in existing gasification technology and the need for secondary gasification of the generated ash according to the situation.

[0008] In order to achieve the above technical purpose, the present application provides an oxygen-enriched high-temperature fluidized bed gasifier, including a gasifier body, a gasification component and a crushing device;

[0009] The top of the gasification furnace body is provided with a smoke exhaust port;

[0010] The gasification assembly includes a gasification igniter, a gasification raw material feeding mechanism, a hot blast furnace assembly and a gasification gas adding pipe;

[0011] The air outlet end of the hot blast furnace assembly is connected to the bottom of the outer peripheral wall of the gasification furnace body, and is used to provide the gasification furnace body with hot air that can move in a circular motion around the inner wall of the gasification furnace body;

[0012] The discharge end of the gasification raw material feeding mechanism is connected to the bottom of the outer peripheral wall of the gasification furnace body;

[0013] The gasification igniter is installed on the gasification furnace body and is used to ignite the gasification raw material to generate flue gas;

[0014] The gasification gas adding pipe is used to add oxygen into the gasification furnace body, so that an oxygen-rich environment with a preset oxygen concentration is formed inside the gasification furnace body, and at the same time, the gasification raw material is maintained in an incomplete combustion state;

[0015] The crushing device is installed in the gasification furnace body and is used to crush the ash in the generated flue gas.

[0016] Furthermore, it also includes an annular gas transmission pipe and a plurality of connecting pipes;

[0017] The annular gas delivery pipe is sleeved outside the gasifier body;

[0018] The air outlet end of the hot air furnace assembly is connected to the annular air delivery pipe;

[0019] The hot blast furnace is connected to the gasification furnace body through a plurality of connecting pipes;

[0020] A plurality of the connecting pipes are distributed around the circumference of the gasification furnace body, and one end of the connecting pipes is connected to the bottom of the outer peripheral wall of the gasification furnace body, and the other end is connected to the annular gas delivery pipe, so that the annular gas delivery pipe is connected to the gasification furnace body;

[0021] Each of the connecting pipes is tangent to the inner peripheral wall of the gasification furnace body.

[0022] Furthermore, the gasification gas adding pipe is connected to the annular gas supply pipe and is used to add oxygen to the gasification furnace body through the annular gas supply pipe and the connecting pipe.

[0023] Further, the crushing device includes a plurality of cutting and crushing knives;

[0024] The plurality of cutting and crushing knives are arranged circumferentially and are divided into multiple layers from bottom to top;

[0025] The cutting and crushing knives of adjacent layers are staggeredly distributed.

[0026] Further, it also includes a wind hood;

[0027] The fixed wind hood is installed at the position where the smoke exhaust port is provided on the inner top wall of the gasification furnace body;

[0028] The wind-fixing cover is in the shape of an inverted frustum.

[0029] Further, it also includes an ash return trough;

[0030] The ash reflux trough is installed on the inner bottom wall of the gasification furnace body and is arranged directly opposite to the smoke exhaust port;

[0031] A reflux channel is provided in the ash reflux trough;

[0032] A reflux inlet communicating with the reflux channel is provided at the top of the ash reflux trough;

[0033] A reflux outlet communicating with the reflux channel is provided at the bottom of the outer peripheral wall of the ash reflux groove.

[0034] Furthermore, the reflux inlet is in a bell-mouth shape.

[0035] Furthermore, the preset oxygen concentration is 29%±1%.

[0036] Furthermore, the gasification raw material feeding mechanism is a variable frequency screw feeder.

[0037] Furthermore, an inspection port is provided at the bottom of the gasification furnace body.

[0038] It can be seen from the above technical solutions that the oxygen-enriched high-temperature fluidized bed gasifier designed in this application has the following beneficial effects:

[0039] 1. The air outlet of the hot blast furnace assembly is connected to the bottom of the outer peripheral wall of the gasification furnace body to achieve bottom air inlet, increase the contact area with the gasification raw materials, and reduce the mixing time.

[0040] 2. The hot air / air flow input by the hot blast furnace assembly will make a circular motion along the inner wall of the gasifier body. As the incoming gas continues to increase, the hot air / air flow will rise in a spiral state, so that large-particle ash slag is continuously contacted and crushed by the crushing device under the drive of the hot air / air flow, so that the harmful substances inside the ash slag can be more effectively treated, thereby improving the material gasification efficiency, production efficiency and reducing the secondary gasification of ash slag.

[0041] 3. The hot air generated by the hot blast furnace assembly ensures that the gasifier body is in a high-temperature environment, so that harmful substances are cracked at high temperature and gas emissions meet national standards.

[0042] 4. The overall structure is compact, which reduces the space occupied, thereby reducing investment cost and maintenance cost.

[0043] In general, the oxygen-enriched high-temperature fluidized bed gasifier designed in the present application can effectively solve the technical problems of low calorific value of solid waste in existing gasification technologies and the need for secondary gasification of the generated ash and slag according to the situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 This is a front view of an oxygen-enriched high-temperature fluidized bed gasifier provided in the present application without an annular gas delivery pipe and a connecting pipe;

[0046] Figure 2 A top view of an oxygen-enriched high-temperature fluidized bed gasifier provided in the present application without an annular gas delivery pipe and a connecting pipe;

[0047] Figure 3 A top view of an oxygen-enriched high-temperature fluidized bed gasifier provided in the present application with an annular gas delivery pipe and a connecting pipe;

[0048] In the figure: 1. Smoke exhaust port; 2. Wind hood; 3. Gasification furnace body; 31. Annular gas pipe; 32. Connecting pipe; 4. Crushing device; 41. Cutting and crushing knife; 5. Ignitor; 6. Gasification raw material feeding mechanism; 7. Ash reflux trough; 71. Reflux channel; 72. Reflux inlet; 73. Reflux outlet; 8. Gasification gas adding pipe; 9. Hot blast furnace assembly; 10. Inspection port. DETAILED DESCRIPTION

[0049] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0050] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0052] The embodiment of the present application discloses an oxygen-enriched high-temperature fluidized bed gasifier.

[0053] See also Figure 1 An embodiment of an oxygen-enriched high-temperature fluidized bed gasifier provided in the embodiments of the present application includes:

[0054] Gasification furnace body 3, gasification components and crushing device 4.

[0055] A smoke exhaust port 1 is provided on the top of the gasification furnace body 3 , and the gasification furnace body 3 as a whole can be cylindrical without limitation.

[0056] The gasification component includes a gasification igniter 5 , a gasification raw material feeding mechanism 6 , a hot blast furnace assembly 9 and a gasification gas adding pipe 8 .

[0057] The air outlet end of the hot blast furnace assembly 9 is connected to the bottom position of the outer peripheral wall of the gasification furnace body 3, and is used to provide hot air into the gasification furnace body 3 that can make a circular motion around the inner wall of the gasification furnace body 3; the air inlet end of the hot blast furnace assembly 9 is connected to the fan through a connecting air duct, and the gas enters the hot blast furnace assembly 9 through the fan connecting air duct, and the hot air igniter 5 of the hot blast furnace assembly 9 ignites the natural gas to heat the air, and then transports the heated air into the gasification furnace body 3.

[0058] The discharge end of the gasification raw material feeding mechanism 6 is connected to the bottom of the outer peripheral wall of the gasification furnace body 3; it can control the feed amount to make the gasification reaction in the gasification furnace body 3 sufficient, thereby improving the gasification efficiency.

[0059] The gasification igniter 5 is installed on the gasification furnace body 3, and can be specifically arranged above the gasification raw material feeding mechanism 6, and is used to ignite the gasification raw material to generate flue gas.

[0060] The gasification gas adding pipe 8 is used to add oxygen into the gasification furnace body 3 so that an oxygen-rich environment with a preset oxygen concentration is formed inside the gasification furnace body 3, while maintaining the gasification raw material in an incomplete combustion state; one end of the gasification gas adding pipe 8 is connected to the gasification furnace body 3, and the other end is connected to the oxygen-enriched generator, and the oxygen generated by the oxygen-enriched generator enters the gasification furnace body 3 through the gasification gas adding pipe 8.

[0061] The crushing device 4 is installed in the gasification furnace body 3 and is used to crush the ash in the generated flue gas.

[0062] The oxygen-enriched high-temperature fluidized bed gasifier designed in this application has the following beneficial effects:

[0063] 1. The air outlet end of the hot blast furnace assembly 9 is connected to the bottom of the outer peripheral wall of the gasification furnace body 3 to achieve bottom air intake, increase the contact area with the gasification raw materials, and reduce the mixing time.

[0064] 2. The hot air / air flow input by the hot blast furnace assembly 9 will make a circular motion along the inner wall of the gasification furnace body 3. As the incoming gas continues to increase, the hot air / air flow will rise in a spiral state, so that large-particle ash slag is continuously brought into contact with the crushing device 4 and crushed under the drive of the hot air / air flow, so that the harmful substances inside the ash slag can be more effectively treated, thereby improving the material gasification efficiency, production efficiency and reducing the secondary gasification of the ash slag.

[0065] 3. The hot air generated by the hot air furnace assembly 9 ensures that the gasification furnace body 3 is in a high-temperature environment, so that harmful substances are cracked at high temperature and gas emissions meet national standards.

[0066] 4. The overall structure is compact, which reduces the space occupied, thereby reducing investment cost and maintenance cost.

[0067] In general, the oxygen-enriched high-temperature fluidized bed gasifier designed in the present application can effectively solve the technical problems of low calorific value of solid waste in existing gasification technologies and the need for secondary gasification of the generated ash and slag according to the situation.

[0068] The above is an embodiment of an oxygen-enriched high-temperature fluidized bed gasifier provided in the embodiment of the present application. The following is an embodiment of an oxygen-enriched high-temperature fluidized bed gasifier provided in the embodiment of the present application. For details, please refer to Figures 1 to 3 .

[0069] Based on the solution of the above embodiment 1:

[0070] Furthermore, it also includes an annular gas delivery pipe 31 and a plurality of connecting pipes 32 .

[0071] The annular gas delivery pipe 31 is sleeved outside the gasification furnace body 3 , the air outlet end of the hot blast furnace assembly 9 is connected to the annular gas delivery pipe 31 , and the hot blast furnace is connected to the gasification furnace body 3 through a plurality of connecting pipes 32 .

[0072] Multiple connecting pipes 32 are evenly distributed around the circumference of the gasifier body 3, and one end is connected to the bottom position of the outer wall of the gasifier body 3, and the other end is connected to the annular gas pipe 31, so that the annular gas pipe 31 is connected to the gasifier body 3, and each connecting pipe 32 is tangent to the inner wall of the gasifier body 3.

[0073] The hot air output by the hot blast furnace assembly 9 flows to the connecting pipe 32 through the annular gas supply pipe 31, and then flows from the connecting pipe 32 to the gasification furnace body 3; since the connecting pipes 32 are provided in plurality and are distributed tangent to the inner circumferential wall of the gasification furnace body 3, the hot air output by the hot blast furnace assembly 9 can be input into the gasification furnace body 3 in a multi-point tangential input manner, so that the input hot air can better perform a circular motion along the inner circumferential wall of the gasification furnace body 3, so that the hot air is in more complete contact with the gasification raw materials, thereby further improving the gasification efficiency.

[0074] In the present application, the specific number of the connecting pipes 32 may be four.

[0075] Further, taking the annular gas delivery pipe 31 as an example, the gasification gas supply pipe 8 is connected to the annular gas delivery pipe 31, and is used to add oxygen to the gasification furnace body 3 through the annular gas delivery pipe 31 and the connecting pipe 32. In this way, the gasification gas supply pipe 8 can also input oxygen into the gasification furnace body 3 in a multi-point tangential input manner, so as to better create an oxygen-rich environment in the gasification furnace body 3.

[0076] Furthermore, the design of the crushing device 4 includes a plurality of cutting and crushing knives 41. The cutting and crushing knives 41 may be in a rhombus shape or the like, and may have a blade structure, and there is no specific limitation thereto.

[0077] The plurality of cutting and crushing knives 41 are arranged circumferentially and are divided into multiple layers from bottom to top, and the cutting and crushing knives 41 of adjacent layers are staggered to improve crushing efficiency.

[0078] Furthermore, it also includes a fixed wind hood 2, which is installed on the inner top wall of the gasification furnace body 3 where the smoke exhaust port 1 is provided, that is, installed below the smoke exhaust port 1, and the fixed wind hood 2 is in the shape of an inverted cone.

[0079] By providing the fixed wind hood 2, the airflow gathered from the bottom can be prevented from generating vortices, and at the same time, the larger particle size ash in the flue gas can be separated and brought into contact with the crushing device 4 again driven by the hot air to be further refined.

[0080] Furthermore, in order to better realize the return of the separated large-particle ash to the bottom of the gasification furnace body 3, the present application also designs an ash return trough 7.

[0081] The ash reflow groove 7 is installed on the inner bottom wall of the gasification furnace body 3 and is arranged opposite to the smoke exhaust port 1 , and the crushing device 4 is arranged around the ash reflow groove 7 .

[0082] A reflux channel 71 is provided in the ash reflux groove 7 , a reflux inlet 72 connected to the reflux channel 71 is provided at the top of the ash reflux groove 7 , and a reflux outlet 73 connected to the reflux channel 71 is provided at the bottom of the outer peripheral wall of the ash reflux groove 7 .

[0083] The large-size ash separated by the solid wind hood 2 falls into the reflux inlet 72, flows through the reflux channel 71, and flows back from the reflux outlet 73 to the bottom of the gasification furnace body 3, and then contacts the crushing device 4 driven by the hot air and is crushed again.

[0084] Furthermore, the reflux inlet 72 is in a bell-mouth shape, which can better collect the separated large-size ash.

[0085] Furthermore, the preset oxygen concentration is 29%±1%, and those skilled in the art can make appropriate changes based on this. Under this concentration range design, the gasification efficiency can be further accelerated, the energy consumption of the hot blast furnace can be reduced, and the synthesis gas output per unit time can be higher.

[0086] Furthermore, the gasification raw material feeding mechanism 6 is a variable frequency screw feeder. The screw feeder with variable frequency design can achieve more precise control over material feeding.

[0087] Furthermore, an inspection port 10 is provided at the bottom of the gasification furnace body 3, and an openable and closable inspection door is provided on the inspection port 10. The design of the inspection port 10 makes the maintenance and inspection inside the gasification furnace body 3 more convenient.

[0088] Furthermore, a furnace wall composed of multiple layers of fireproof material is provided in the gasification furnace body 3. Specifically, a furnace wall composed of multiple layers of high temperature resistant fireproof material is provided on the outer side of the inner furnace wall and the inner side of the outer furnace wall of the gasification furnace body 3.

[0089] The working process of the oxygen-enriched high-temperature fluidized bed gasifier designed in this application is as follows:

[0090] 1. The fan is started, and the gas reaches the hot blast furnace assembly 9 through the fan and the connecting air duct. The hot blast igniter 5 of the hot blast furnace assembly 9 ignites the natural gas to heat the delivered gas to form hot blast. The hot blast enters the gasification furnace body 3 through the annular gas delivery pipe 31 and the connecting pipe 32, and heats the inside of the gasification furnace body 3 to a predetermined temperature.

[0091] 2. The gasification raw material feeding mechanism is started, and the gasification raw material is fed into the gasification furnace body 3 according to a preset feed amount. The hot air in the gasification furnace body 3 drives the gasification raw material to be lifted from the bottom of the gasification furnace body 3 and fully contact with it.

[0092] 3. The gasification igniter 5 is started to ignite the gasification raw material. At the same time, a certain proportion of oxygen is added through the gasification gas adding pipe 8 to ensure that the gasification raw material is in an oxygen-rich environment and maintain an incomplete combustion state.

[0093] 4. The large ash particles in the flue gas generated by the combustion of the gasified raw materials will be driven by the hot air to form an air grind with the cutting and crushing blades 41 to achieve crushing until they are crushed into a state that can be carried out of the smoke outlet 1 by the hot air.

[0094] The above is a detailed introduction to an oxygen-enriched high-temperature fluidized bed gasifier provided in the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An oxygen-enriched high-temperature fluidized bed gasifier, characterized in that: It comprises a gasification furnace body (3), a gasification component and a crushing device (4); The top of the gasification furnace body (3) is provided with a smoke exhaust port (1); The gasification component comprises a gasification igniter (5), a gasification raw material feeding mechanism (6), a hot blast furnace assembly (9) and a gasification gas adding pipe (8); The air outlet end of the hot blast furnace assembly (9) is connected to the bottom of the outer peripheral wall of the gasification furnace body (3) and is used to provide hot air into the gasification furnace body (3) that can move in a circular motion around the inner wall of the gasification furnace body (3); The discharge end of the gasification raw material feeding mechanism (6) is connected to the bottom of the outer peripheral wall of the gasification furnace body (3); The gasification igniter (5) is installed on the gasification furnace body (3) and is used to ignite the gasification raw material to generate flue gas; The gasification gas adding pipe (8) is used to add oxygen into the gasification furnace body (3), so that an oxygen-rich environment with a preset oxygen concentration is formed inside the gasification furnace body (3), while maintaining the gasification raw material in an incomplete combustion state; The crushing device (4) is installed in the gasification furnace body (3) and is used to crush the ash in the generated flue gas.

2. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: It also includes an annular gas delivery pipe (31) and a plurality of connecting pipes (32); The annular gas delivery pipe (31) is sleeved outside the gasification furnace body (3); The air outlet end of the hot air furnace assembly (9) is connected to the annular air delivery pipe (31); The hot blast furnace is connected to the gasification furnace body (3) through a plurality of connecting pipes (32); A plurality of the connecting pipes (32) are distributed around the circumference of the gasification furnace body (3), and one end of the connecting pipes is connected to the bottom of the outer peripheral wall of the gasification furnace body (3), and the other end is connected to the annular gas supply pipe (31), so that the annular gas supply pipe (31) is connected to the gasification furnace body (3); Each of the connecting pipes (32) is tangent to the inner peripheral wall of the gasification furnace body (3).

3. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 2, characterized in that: The gasification gas adding pipe (8) is in communication with the annular gas supply pipe (31) and is used to add oxygen to the gasification furnace body (3) through the annular gas supply pipe (31) and the connecting pipe (32).

4. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: The crushing device (4) comprises a plurality of cutting and crushing knives (41); The plurality of cutting and crushing knives (41) are arranged circumferentially and are divided into multiple layers from bottom to top; The cutting and crushing knives (41) of adjacent layers are arranged in a staggered manner.

5. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: Also includes a wind shield (2); The wind-fixing hood (2) is installed at a position on the inner top wall of the gasification furnace body (3) where the smoke exhaust port (1) is provided; The wind-fixing cover (2) is in the shape of an inverted frustum.

6. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 5, characterized in that: It also includes an ash return trough (7); The ash reflow trough (7) is installed on the inner bottom wall of the gasification furnace body (3) and is arranged directly opposite to the smoke exhaust port (1); A reflux channel (71) is provided in the ash reflux trough (7); The top of the ash return groove (7) is provided with a return inlet (72) connected to the return channel (71); A reflux outlet (73) communicating with the reflux channel (71) is provided at the bottom of the outer peripheral wall of the ash reflux groove (7).

7. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 6, characterized in that: The reflux inlet (72) is in a bell-mouth shape.

8. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: The preset oxygen concentration is 29%±1%.

9. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: The gasification raw material feeding mechanism (6) is a variable frequency screw feeder.

10. The oxygen-enriched high-temperature fluidized bed gasifier according to claim 1, characterized in that: The bottom of the gasification furnace body (3) is provided with an inspection opening (10).

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