Circulating fluidized bed coal gasifier

Abstract

The utility model relates to related field of coal gas producer, especially a circulating fluidized bed coal gas producer, including coal gas producer furnace body, the coal gas producer furnace body lower part fixed connection furnace body support seat, the coal gas producer furnace body inside middle part fixed connection cloth wind board, the cloth wind board upper part fixed through connection multiple air cap, the cloth wind board middle part is equipped with through -hole through connection discharge pipe, the discharge pipe fixed through connection coal gas producer furnace body, the coal gas producer furnace body lower part fixed mounting prevents the blocking subassembly, the prevent the blocking subassembly lower part fixed through the setting has the ash pipe, in the utility model, through set up prevent the blocking subassembly makes motor drive driving gear and driven gear cooperation, the coal cinder that will use is transported into the broken tooth roll of rotation and carries out the crushing treatment, thereby will the volume of coal cinder refinement, prevents because coal cinder too big and blocks the discharge port.

Description

Technical Field

[0001] This utility model relates to the field of gas generators, and in particular to a circulating fluidized bed gas generator. Background Technology

[0002] Coal gas is a combustible gas produced by converting coal in a gasifier. Compared to coal combustion, coal gas combustion is cleaner and more efficient, thus it is receiving increasing attention as a clean energy source. Circulating fluidized bed (CFB) technology, due to its high bed gas velocity and excellent mass and heat transfer, is widely used in coal combustion and gasification. CFB gasification technology typically uses air and steam as the fluidizing gas and gasifying agent to produce industrial fuel gas. The high gas velocity and large solids carryover in CFB systems mean that small particles, including carbonaceous particles, in the coal, due to factors such as the coal particle size, circulation ratio, and separator efficiency, are discharged as fly ash along with the flue gas.

[0003] Current circulating fluidized bed gasifiers lack a mechanism for crushing coal slag, resulting in large slag volumes that easily become stuck at the bottom discharge port, causing malfunctions in the internal system. Furthermore, the lack of a stable discharge mechanism makes it difficult to consistently control slag discharge, frequently leading to blockages. Therefore, it is necessary to provide a circulating fluidized bed gasifier to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a circulating fluidized bed gasifier to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A circulating fluidized bed gasifier, characterized in that: it includes a gasifier body; a gasifier support base is fixedly connected to the lower part of the gasifier body; a coal inlet pipe is fixedly and continuously connected to the upper left side of the gasifier body; an air inlet pipe is fixedly and continuously connected to the lower left side of the gasifier body; a return material pipe is fixedly and continuously connected to the lower right side of the gasifier body; a gas outlet pipe is fixedly and continuously connected to the upper right side of the gasifier body; a cyclone separator is fixedly and continuously connected to the right side of the gas outlet pipe; a return material pipe is fixedly and continuously connected to the lower part of the cyclone separator; a flue gas outlet pipe is connected to the upper part of the cyclone separator; an air distribution plate is fixedly and continuously connected to the middle part of the gasifier body; multiple air caps are fixedly and continuously connected to the upper part of the air distribution plate; a through hole is provided in the middle of the air distribution plate and a discharge pipe is connected to it; the discharge pipe is fixedly and continuously connected to the gasifier body; an anti-blocking component is fixedly installed at the lower part of the gasifier body; and an ash discharge pipe is fixedly and continuously provided at the lower part of the anti-blocking component.

[0007] Preferably, the anti-clogging component includes an auxiliary housing. The front of the auxiliary housing is connected to a front plate via multiple bolts. A blower is fixedly connected to the upper left side of the auxiliary housing via an air duct. A guide plate is fixedly installed in the middle of the interior of the auxiliary housing. A motor is fixedly installed at the rear of the outer side of the auxiliary housing. A furnace support base is fixedly connected to the lower part of the motor. The output end of the motor is fixedly connected to a drive shaft. The drive shaft is connected to a crushing toothed roller via a key. A sealing ring is fixedly installed between the drive shaft and the auxiliary housing. A drive gear is fixedly connected to the drive shaft. The drive gear meshes with and drives a driven gear. The driven gear is fixedly connected to a driven shaft. A sealing ring is fixedly installed between the driven shaft and the auxiliary housing. The driven shaft is connected to the crushing toothed roller via a key.

[0008] Preferably, the width of the upper part of the gasifier body is set to be greater than the width of the lower part of the gasifier body.

[0009] Preferably, the lower bottom plate of the auxiliary box is configured as a slope.

[0010] Preferably, the guide plate is configured as a slope, and the upper edge of the guide plate is collinear with the lower edge of the blower outlet air.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this invention, the anti-clogging component enables the motor to drive the active and driven gears to cooperate, transporting the used coal slag into the rotating crushing roller for crushing, thereby refining the volume of the coal slag and preventing the discharge port from being blocked due to excessively large coal slag. The shape of the gasifier body allows the coal sufficient space to react, and the coal ash after reaction falls back to the center of the air distribution plate according to the shape of the furnace wall, facilitating cleaning after the operation. By setting the guide plate in a slope shape, the blower can separate coal slag of different sizes through air blowing. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0015] Figure 2 This is the front view of the present utility model;

[0016] Figure 3 This is a bottom view of the present invention;

[0017] Figure 4 This is the left view of the present invention;

[0018] Figure 5 This is a rear view of the present invention;

[0019] Figure 6 This utility model Figure 4 Sectional view at point AA;

[0020] Figure 7 This utility model Figure 5 Sectional view at point BB.

[0021] In the diagram: 1. Gas generator body; 2. Furnace body support; 3. Cyclone separator; 4. Gas outlet pipe; 5. Flue gas outlet pipe; 6. Return pipe; 7. Coal inlet pipe; 8. Air inlet pipe; 9. Air distribution plate; 10. Ash outlet pipe; 11. Air cap; 12. Discharge pipe; 13. Anti-clogging component; 1301. Auxiliary housing; 1302. Crushing toothed roller; 1303. Guide plate; 1304. Blower; 1305. Front plate of auxiliary housing; 1306. Bolt; 1307. Motor; 1308. Drive shaft; 1309. Driven shaft; 1310. Drive gear; 1311. Driven gear; 1312. Sealing ring. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Please refer to the following: Figure 1-7 A circulating fluidized bed gasifier includes a gasifier body 1, a gasifier support base 2 fixedly connected to the lower part of the gasifier body 1, a coal inlet pipe 7 fixedly and continuously connected to the upper left side of the gasifier body 1, an air inlet pipe 8 fixedly and continuously connected to the lower left side of the gasifier body 1, a return material pipe 6 fixedly and continuously connected to the lower right side of the gasifier body 1, a gas outlet pipe 4 fixedly and continuously connected to the upper right side of the gasifier body 1, and a cyclone separator 3 fixedly and continuously connected to the right side of the gas outlet pipe 4. The cyclone separator 3 is fixedly connected to the return pipe 6 below, and the cyclone separator 3 is connected to the flue gas outlet pipe 5 above. The gas generator body 1 is fixedly connected to the middle of the interior of the gasifier body 1. The upper part of the gasifier body 1 is fixedly connected to multiple air caps 11. The middle part of the gasifier body 1 has a through hole that is connected to the discharge pipe 12. The discharge pipe is fixedly connected to the gas generator body 1. The gas generator body 1 is fixedly installed with an anti-blocking component 13 at the bottom. The lower part of the anti-blocking component 13 is fixedly connected with an ash discharge pipe 10.

[0024] The anti-blocking component 13 includes an auxiliary housing 1301. The front of the auxiliary housing 1301 is connected to a front plate 1305 via multiple bolts 1306. A blower 1304 is fixedly connected to the upper left side of the auxiliary housing 1301 via an air duct. A guide plate 1303 is fixedly installed in the middle of the interior of the auxiliary housing 1301. A motor 1307 is fixedly installed at the rear outer side of the auxiliary housing 1301. A furnace support base 2 is fixedly connected to the lower part of the motor 1307. A drive shaft 1308 is fixedly connected to the output end of the motor 1307. The drive shaft 1308 is connected to a crushing toothed roller 1302 via a key. A fixed arrangement is formed between the drive shaft 1308 and the auxiliary housing 1301. A sealing ring 1312 is provided. The drive shaft 1308 is fixedly connected to the drive gear 1310. The drive gear 1310 meshes with and drives the driven gear 1311. The driven gear 1311 is fixedly connected to the driven shaft 1309. A sealing ring 1312 is fixedly provided between the driven shaft 1309 and the auxiliary housing 1301. The driven shaft 1309 is connected to the crushing toothed roller 1302 via a key. By providing the above-mentioned anti-clogging component 13, the motor 1307 can drive the drive gear 1310 and the driven gear 1311 to cooperate with each other, and transport the used coal slag into the rotating crushing toothed roller 1302 for crushing, thereby refining the volume of the coal slag and preventing the slag from clogging the discharge port due to excessively large coal slag.

[0025] The upper part of the gasifier furnace body 1 is wider than the lower part. This setting allows the coal to have sufficient space to react, and the coal ash after reaction falls back to the center of the air distribution plate 9 according to the shape of the furnace wall. It also facilitates cleaning after the operation is completed.

[0026] The lower bottom plate of the auxiliary box 1301 is designed as a slope, which allows for the use of the slope to guide larger coal ash particles into the crushing toothed rollers 1302 for crushing.

[0027] The guide plate 1303 is configured as a slope, and the upper edge of the guide plate 1303 is collinear with the lower edge of the outlet air of the blower 1304. This structure enables the blower 1304 to separate coal slag of different sizes by blowing air.

[0028] Working principle: First, raw coal enters the gasifier body 1 through the coal inlet pipe 7. Gas is introduced into the gasifier body 1 through the gas inlet pipe 8. The gas is introduced into the upper part of the gasifier body 1 through the air cap and fully mixes with the raw coal for gasification reaction. The generated gas enters the cyclone separator 3 for strong swirling flow. Unreacted raw coal in the gas is thrown against the wall of the cyclone separator 1 under the action of centrifugal force, and then re-enters the gasifier body 1 through the return pipe 6 for gasification reaction. The solid slag generated after full reaction is discharged into the auxiliary box 1301 through the discharge pipe 12. The start of the blower 1304 separates the coal slag of different sizes. Small coal slag is pushed by the blower 1304 to the surface of the auxiliary box 1301 and falls to the bottom plate of the auxiliary box 1301 and enters the ash discharge pipe 10. Large coal slag... The material falls onto the guide plate and slides to the crushing toothed roller 1302. The motor 1307 starts, causing the drive shaft 1308 to rotate, which in turn drives the drive gear 1310 to rotate. The drive gear 1310 meshes and drives the driven gear 1311, causing the driven shaft 1311 to rotate. This causes the crushing toothed roller 1302 to rotate, crushing large-sized coal slag. The processed coal slag is guided down by the guide plate 1303 to the bottom plate of the auxiliary box 1301, and then guided by the slope of the auxiliary box 1301 into the ash discharge pipe 10. When the gasifier is shut down for ash removal after operation, if the discharge pipe 12 becomes blocked, the ash discharge pipe 10 is closed, and the blower 1304 is turned on. The blower 1304 blows air into the auxiliary box 1301, increasing the air pressure inside the auxiliary box 1301. This air pressure acts on the coal slag blocking the discharge pipe 12, clearing the blockage.

[0029] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more. Therefore, the terms "upper," "lower," "left," "right," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A circulating fluidized bed gasifier, characterized in that: The system includes a gasifier furnace body (1), with a furnace body support base (2) fixedly connected to the lower part of the gasifier furnace body (1), a coal inlet pipe (7) fixedly connected to the upper left side of the gasifier furnace body (1), an air inlet pipe (8) fixedly connected to the lower left side of the gasifier furnace body (1), a return material pipe (6) fixedly connected to the lower right side of the gasifier furnace body (1), a gas outlet pipe (4) fixedly connected to the upper right side of the gasifier furnace body (1), and a cyclone separator (3) fixedly connected to the right side of the gas outlet pipe (4). The return pipe (6) is fixedly connected to the bottom of the device (3), the flue gas outlet pipe (5) is fixedly connected to the top of the cyclone separator (3), the air distribution plate (9) is fixedly connected to the middle of the inner side of the gas generator body (1), multiple air caps (11) are fixedly connected to the upper part of the air distribution plate, the air distribution plate has a through hole in the middle that is connected to the discharge pipe (12), the discharge pipe is fixedly connected to the gas generator body (1), the anti-blocking component (13) is fixedly installed at the bottom of the gas generator body (1), and the ash discharge pipe (10) is fixedly connected to the bottom of the anti-blocking component (13).

2. The circulating fluidized bed gasifier as described in claim 1, characterized in that: The anti-blocking component (13) includes an auxiliary housing (1301). The front of the auxiliary housing (1301) is connected to the front plate (1305) of the auxiliary housing (1301) by multiple bolts (1306). A blower (1304) is fixedly connected to the upper left side of the auxiliary housing (1301) through an air duct. A guide plate (1303) is fixedly installed in the middle of the interior of the auxiliary housing (1301). A motor (1307) is fixedly installed on the rear outer side of the auxiliary housing (1301). The lower part of the motor (1307) is fixedly connected to the furnace support base (2). The output end of the motor (1307) is fixedly connected to the drive shaft (1308). The drive shaft (1308) is connected to the crushing toothed roller (1302) via a key. A sealing ring (1312) is fixedly provided between the drive shaft (1308) and the auxiliary housing (1301). The drive shaft (1308) is fixedly connected to the drive gear (1310). The drive gear (1310) meshes and drives the driven gear (1311). The driven gear (1311) is fixedly connected to the driven shaft (1309). A sealing ring (1312) is fixedly provided between the driven shaft (1309) and the auxiliary housing (1301). The driven shaft (1309) is connected to the crushing toothed roller (1302) via a key.

3. The circulating fluidized bed gasifier as described in claim 1, characterized in that: The width of the upper part of the gas generator furnace body (1) is set to be greater than the width of the lower part of the furnace body.

4. The circulating fluidized bed gasifier as described in claim 2, characterized in that: The bottom plate of the auxiliary box (1301) is set in a sloping shape.

5. The circulating fluidized bed gasifier as described in claim 2, characterized in that: The guide plate (1303) is configured as a slope, and the upper edge of the guide plate (1303) is collinear with the lower edge of the outlet air of the blower (1304).

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