System for preventing internal hardening of large dry dedusting ash bin

Abstract

The utility model provides a system for preventing internal hardening of a dry dedusting large ash bin, which relates to the technical field of blast furnace gas dedusting and comprises a large ash bin, a grating plate and a gas purging nozzle assembly. A large ash bin dust removal cloth bag is arranged in an inner cavity of the large ash bin, the lower portion of the large ash bin comprises a large ash bin ash hopper, the grating plate is arranged between the large ash bin dust removal cloth bag and the large ash bin ash hopper, and the gas purging spray head assembly is used for purging the grating plate so as to fluidize accumulated ash on the grating plate. According to the system for preventing the internal hardening of the dry dedusting large ash bin, accumulated ash above the system can be fluidized, penetrates through the grating plate after being thinned and softened, falls into the ash bucket below the ash bin and is smoothly discharged downwards, so that ash cannot be accumulated above the grating plate of the large ash bin, normal ash discharge of the large ash bin is guaranteed, and the system is simple in structure, low in cost, convenient to operate and good in effect.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace gas dust removal technology, and in particular to a system for preventing caking inside a large ash silo in dry dust removal. Background Technology

[0002] After a period of operation, the large ash silo of the dry dust removal system will have the problem of dust accumulating on the upper grid plate and not falling off. When the dust accumulation on the grid plate reaches a certain height, it will cause the filter bags in the large ash silo to fall off, the grid plate to deform, the ash conveying pipe to be blocked, and the large ash silo to be unable to discharge ash normally. In severe cases, it may affect the normal production of the blast furnace system. Utility Model Content

[0003] The purpose of this invention is to provide a system for preventing caking inside large ash silos in dry dust collection systems, aiming to prevent ash accumulation above the ash silo's grid plate and ensure normal ash discharge from the ash silo. The specific technical solution is as follows:

[0004] A system for preventing caking inside a large ash silo in dry dust collection includes: a large ash silo, a grid plate, and a gas purging nozzle assembly; the inner cavity of the large ash silo is provided with a large ash silo dust collector bag, the lower part of the large ash silo includes a large ash silo hopper, the grid plate is disposed between the large ash silo dust collector bag and the large ash silo hopper, and the gas purging nozzle assembly is used to blow on the grid plate to fluidize the accumulated ash on it.

[0005] Furthermore, the gas purging nozzle assembly is located below the grid plate.

[0006] Furthermore, the gas purging nozzle assembly includes a gas delivery pipe and multiple nozzles, which are arranged obliquely upwards toward the grid plate.

[0007] Furthermore, an ash unloading system is connected to the bottom of the ash hopper of the large ash silo.

[0008] Furthermore, the ash unloading system includes an ash unloading pipe and a control valve disposed on the ash unloading pipe.

[0009] Furthermore, it also includes a dust collector cylinder, wherein the dust collected by the dust collector cylinder is transported through a gas ash conveying pipe to the area above the grid plate inside the large ash silo.

[0010] Furthermore, the dust collector cylinder is a dry dust collector cylinder, and dust removal is performed through the dust collector cylinder filter bags.

[0011] Furthermore, the lower part of the dust collector cylinder includes a dust collector hopper, which is connected to the inner cavity of the large ash silo via the gas ash conveying pipe.

[0012] Furthermore, the gas ash conveying pipeline includes an external ash conveying pipeline located outside the large ash silo and an internal ash conveying pipeline located inside the large ash silo, with the outlet of the internal ash conveying pipeline located at the center of the large ash silo.

[0013] Furthermore, both the gas conveying pipeline and the gas ash conveying pipeline are connected to a nitrogen source for gas supply.

[0014] This utility model provides a system for preventing caking inside large ash silos in dry dust collection systems, which has the following beneficial effects:

[0015] This utility model discloses a system for preventing caking inside a large ash silo in dry dust collection. The system comprises a large ash silo, a grid plate, and a gas purging nozzle assembly. The inner cavity of the ash silo contains a dust collector bag, and the lower part of the ash silo includes an ash hopper. The grid plate is positioned between the dust collector bag and the ash hopper. The gas purging nozzle assembly is used to blow air through the grid plate to fluidize the accumulated ash. This fluidizes the ash, making it finer and softer, allowing it to pass through the grid plate and fall smoothly into the ash hopper below the ash silo for discharge. This prevents ash accumulation above the grid plate, ensuring normal ash discharge from the ash silo. Furthermore, this system is simple in structure, low in cost, easy to operate, and highly effective. Attached Figure Description

[0016] Figure 1 A schematic diagram of a system for preventing caking inside a large ash silo in dry dust removal, provided by this utility model;

[0017] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0018] Reference numerals: 10, System; 100, Large ash silo; 110, Large ash silo dust collector bag; 120, Large ash silo hopper; 200, Grating plate; 300, Gas purging nozzle assembly; 310, Gas conveying pipeline; 320, Nozzle; 400, Ash unloading system; 500, Dust collector cylinder; 600, Gas ash conveying pipeline; 610, Internal ash conveying pipeline; 620, External ash conveying pipeline. Detailed Implementation

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clearly illustrate the embodiments of this utility model.

[0020] This utility model embodiment provides a system 10 for preventing caking inside a large ash silo in dry dust removal processes, see reference. Figure 1 , 2As shown, the system includes: a large ash silo 100, a grid plate 200, and a gas purging nozzle assembly 300; the large ash silo 100 has a large ash silo dust collector bag 110 inside its cavity, and the lower part of the large ash silo 100 includes a large ash silo hopper 120. The grid plate 200 is disposed between the large ash silo dust collector bag 110 and the large ash silo hopper 120. The gas purging nozzle assembly 300 is used to purge the grid plate 200 to fluidize the accumulated ash on it.

[0021] In a preferred embodiment, the gas purging nozzle assembly 300 is located below the grid plate 200. Positioning the gas purging nozzle assembly below the grid plate allows the purging gas to blow up the accumulated dust on the grid plate, making it easier to fluidize the dust.

[0022] In one embodiment, the gas purging nozzle assembly 300 includes a gas delivery pipe 310 and a plurality of nozzles 320, which are arranged obliquely upward toward the grid plate 200. By providing multiple nozzles, a larger area of ​​the grid plate can be covered, improving the purging effect.

[0023] In one embodiment, an ash unloading system 400 is connected to the bottom of the large ash hopper 120. The ash unloading system 400 includes an ash unloading pipe and a control valve installed on the ash unloading pipe. When the accumulated ash in the large ash hopper reaches a certain level, an ash transport vehicle drives to the bottom of the ash unloading pipe, opens the control valve, and unloads the accumulated ash from the large ash hopper onto the ash transport vehicle for removal.

[0024] In one embodiment, the system further includes a dust collector cylinder 500, wherein the dust removed by the dust collector cylinder 500 is transported via a gas ash conveying pipe 600 to the area above the grid plate 200 within the inner cavity of the large ash silo 100. The dust collector cylinder is used to remove dust from the blast furnace gas entering the dust collector cylinder and to transport the remaining dust to the large ash silo via the gas ash conveying pipe.

[0025] In a preferred embodiment, the dust collector cylinder 500 is a dry dust collector cylinder, and dust is removed through the dust collector cylinder filter bag.

[0026] In one embodiment, the lower part of the dust collector cylinder 500 includes a dust collector ash hopper, which is connected to the inner cavity of the large ash silo 100 through the gas ash conveying pipe 600.

[0027] In a preferred embodiment, the gas ash conveying pipeline 600 includes an external ash conveying pipeline 620 located outside the large ash silo 100 and an internal ash conveying pipeline 610 located inside the large ash silo 100, with the outlet of the internal ash conveying pipeline 610 located at the center of the large ash silo 100.

[0028] In one embodiment, both the gas conveying pipe 310 and the gas ash conveying pipe 600 are connected to a nitrogen source for gas supply.

[0029] The working principle of the system for preventing caking inside the large ash silo in dry dust removal is as follows: the gas blowing nozzle assembly periodically blows the grid plate, fluidizing the accumulated ash on top. After the ash becomes fine and soft, it passes through the grid plate and falls into the ash hopper below the ash silo, thus being discharged smoothly.

[0030] This utility model discloses a system for preventing caking inside a large ash silo in dry dust collection. The system comprises a large ash silo, a grid plate, and a gas purging nozzle assembly. The inner cavity of the ash silo contains a dust collector bag, and the lower part of the ash silo includes an ash hopper. The grid plate is positioned between the dust collector bag and the ash hopper. The gas purging nozzle assembly is used to blow air through the grid plate to fluidize the accumulated ash. This fluidizes the ash, making it finer and softer, allowing it to pass through the grid plate and fall smoothly into the ash hopper below the ash silo for discharge. This prevents ash accumulation above the grid plate, ensuring normal ash discharge from the ash silo. Furthermore, this system is simple in structure, low in cost, easy to operate, and highly effective.

[0031] Those skilled in the art should understand that this utility model can be implemented in many other specific forms without departing from the spirit and scope of this utility model. Any changes or modifications made by those skilled in the art based on the embodiments of this utility model and the above disclosure shall fall within the protection scope of the claims.

Claims

1. A system for preventing caking inside a large ash silo in dry dust collection, characterized in that, include: Large ash silo, grating plate and gas purging nozzle assembly; The large ash silo is equipped with a dust collector bag inside, and the lower part of the large ash silo includes an ash hopper. The grid plate is disposed between the dust collector bag and the ash hopper. The gas purging nozzle assembly is used to purge the grid plate to fluidize the accumulated ash on it.

2. The system for preventing caking inside a large ash silo in dry dust collection according to claim 1, characterized in that, The gas purging nozzle assembly is located below the grid plate.

3. The system for preventing caking inside a large ash silo in dry dust collection according to claim 2, characterized in that, The gas purging nozzle assembly includes a gas delivery pipe and multiple nozzles, which are arranged obliquely upwards towards the grid plate.

4. The system for preventing caking inside a large ash silo in dry dust collection according to claim 1, characterized in that, The bottom of the large ash hopper is connected to an ash unloading system.

5. The system for preventing caking inside a large ash silo in dry dust collection according to claim 4, characterized in that, The ash unloading system includes an ash unloading pipe and a control valve installed on the ash unloading pipe.

6. The system for preventing caking inside a large ash silo in dry dust removal according to claim 3, characterized in that, It also includes a dust collector cylinder, which removes the dust and transports it through a gas ash conveying pipe to the area above the grid plate inside the large ash silo.

7. The system for preventing caking inside a large ash silo in dry dust collection according to claim 6, characterized in that, The dust collector cylinder is a dry dust collector cylinder, and dust is removed through the dust collector cylinder filter bags.

8. The system for preventing caking inside a large ash silo in dry dust collection according to claim 7, characterized in that, The lower part of the dust collector cylinder includes a dust collector hopper, which is connected to the inner cavity of the large ash silo via the gas ash conveying pipe.

9. The system for preventing caking inside a large ash silo in dry dust removal according to claim 8, characterized in that, The gas ash conveying pipeline includes an external ash conveying pipeline located outside the large ash silo and an internal ash conveying pipeline located inside the large ash silo, with the outlet of the internal ash conveying pipeline located at the center of the large ash silo.

10. The system for preventing caking inside a large ash silo in dry dust collection according to claim 6, characterized in that, Both the gas conveying pipeline and the gas ash conveying pipeline are connected to a nitrogen source for gas supply.

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