Dust removal system applied to dry-process calcium carbide acetylene slag bin

Abstract

The utility model discloses a dust removal system applied to a dry-method calcium carbide acetylene slag bin, which comprises a calcium carbide slag bin, a spiral spray head, a dust remover, a spray tank, a slag slurry pool, a water supply pump, a buffer water pump, an induced draft fan, a buffer water tank, a dust removal pipe I, a dust removal pipe II, a steam tracing pipe, a water return pipe, an overflow plate and a blowback pipe, a steam tracing pipe is mounted in the dust remover, the upper part of the dust remover is connected with a spraying tank through a dust removal pipe II, the top end of the spraying tank is connected with an induced draft fan, the bottom of the spraying tank is connected with a slurry pool through a water return pipe, and two groups of spiral nozzles are mounted in the spraying tank; the buffer water pump is connected with the buffer water tank through a pipeline, the water supply pump is connected with the slurry pool through a pipeline, and the blowback pipe is connected with the dust remover. According to the utility model, the spraying tank is additionally arranged between the dust remover and the induced draft fan, so that dust carried after the filter cloth is damaged can be removed by spraying, the temperature of exhaust gas is reduced, water is taken away, the emission index is ensured to be qualified, and the impeller is prevented from carrying water.

Description

Technical Field

[0001] The utility model relates to the technical field of dust emission, in particular to a dust removal system applied to a dry-process calcium carbide acetylene slag bin. Background Art

[0002] Dry acetylene is a new process for producing acetylene, offering lower costs than wet acetylene. Dry acetylene is produced by reacting small particles of calcium carbide, approximately 3 mm, with water. The resulting carbide slag is transported by conveyors and bucket elevators into a silo. This process generates a large amount of dust, causing environmental pollution. To address this issue, a Grepiler airbox pulse bag dust collector is installed on top of the silo. After passing through the dust collector, the dust is filtered through filter bags and backflushed with 0.6 MPa nitrogen before falling into the silo. This effectively separates the gas and solids of the carbide slag and enables its recovery.

[0003] Due to the high moisture content and high temperature of the carbide slag after the reaction, condensation during the fan extraction process can clog the dust filter cloth and easily break the filter cloth during backblowing. When the filter cloth is damaged, dust is carried into the fan impeller, causing irregular fan vibration. In high-vibration environments, the equipment cannot operate stably and normally, requiring long downtime for maintenance, especially in winter. Therefore, achieving qualified dust emissions from the carbide slag bin and ensuring long-term equipment operation is an important research direction. Utility Model Content

[0004] In order to solve the defects of existing dust collectors that the filter cloth is easily blocked and blown away, and dust is brought into the fan impeller, resulting in unstable equipment operation, the purpose of this utility model is to provide a dust removal system for dry calcium carbide acetylene slag bin.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dust removal system applied to a dry-process calcium carbide acetylene slag bin, comprising a calcium carbide slag bin 1, a spiral nozzle 2, a dust collector 3, a spray tank 4, a slurry pool 5, a water supply pump 6, a buffer water pump 7, an induced draft fan 8, a buffer water tank 9, a dust removal pipe I 10, a dust removal pipe II 11, a steam heating pipe 12, a return water pipe 13, an overflow plate 14, and a backblowing pipe 15.

[0006] The top of the carbide slag bin 1 is connected to the dust collector 3 through the dust removal pipe I 10, and a steam heating pipe 12 is installed inside the dust collector 3. The upper part of the dust collector 3 is connected to the spray tank 4 through the dust removal pipe II 11, and the top of the spray tank 4 is connected to the induced draft fan 8. The bottom of the spray tank 4 is connected to the slurry pool 5 through the return pipe 13, and two groups of spiral nozzles 2 are installed inside the spray tank 4.

[0007] The buffer water pump 7 is connected to the buffer water tank 9 through a pipeline, the water supply pump 6 is connected to the slurry pool 5 through a pipeline, and the backflush pipe 15 is connected to the dust collector 3.

[0008] Furthermore, an overflow plate 14 is provided inside the slurry pool 5 , and the overflow plate 14 divides the inside of the slurry pool 5 into two parts: a clarifier pool and a muddy water pool.

[0009] Furthermore, the water supply pump 6 is connected to the clarifier of the slurry pool 5 through a pipeline.

[0010] Compared with the existing carbide slag dust removal system, the utility model has the following advantages.

[0011] 1. The utility model is a dust removal system applied to a dry-process calcium carbide acetylene slag bin. By arranging a steam heating pipe 12 in the dust collector 3, a constant temperature is ensured in the box, condensation of water vapor is reduced, the service life of the filter bag is extended, and dust is prevented from entering the fan impeller.

[0012] 2. The utility model is a dust removal system applied to dry-process calcium carbide acetylene slag bin, by adding a spray tank 4 between the dust collector 3 and the induced draft fan 8, and installing two upper and lower groups of spiral nozzles 2 in the spray tank 4, two in each group, and the two groups of nozzles are staggered to increase the spraying area. The spraying can remove the dust carried by the damaged filter cloth, reduce the temperature of the exhaust gas, take away the moisture, ensure that the emission indicators are qualified, and prevent the impeller from carrying water.

[0013] 3. The utility model is applied to the dust removal system of the dry calcium carbide acetylene slag bin. After spraying is completed, the system flows into the muddy water pool of the slurry pool 5. The overflow plate 14 is used to overflow the clear water in the muddy water pool into the clarification tank and is recycled in the dust removal system to reduce resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a system diagram of a dust removal system applied to a dry-process calcium carbide acetylene slag bin according to the utility model. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle", "inside", "top", "bottom end", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, they can mean fixed connection, detachable connection, or integral connection; they can mean mechanical connection or electrical connection; they can mean direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] The present invention will be described in further detail below with reference to the accompanying drawings.

[0018] like Figure 1 As shown, the utility model provides a dust removal system for dry-process calcium carbide acetylene slag bin, including a calcium carbide slag bin 1, a spiral nozzle 2, a dust collector 3, a spray tank 4, a slurry pool 5, a water supply pump 6, a buffer water pump 7, an induced draft fan 8, a buffer water tank 9, a dust removal pipe I 10, a dust removal pipe II 11, a steam heating pipe 12, a return water pipe 13, an overflow plate 14, and a backflush pipe 15.

[0019] The top of the carbide slag bin 1 is connected to the dust collector 3 through the dust removal pipe Ⅰ10. A steam heating pipe 12 is installed inside the dust collector 3. The steam heating pipe 12 ensures that the temperature in the dust collector 3 is relatively constant, alleviates the temperature difference that causes gas condensation, and then causes dust to adhere to the surface of the filter cloth and block the filter cloth. The induced draft fan 8 sucks the dust-containing gas in the dust collector 3 into the spray tank 4 through the dust removal pipe Ⅱ11, and the buffer water pump 7 draws water from the buffer water tank 9 to supply water for spraying to the spiral nozzle 2 or the water supply pump 6 draws clarified water from the slurry pool 5 to supply water for spraying to the spiral nozzle 2, and the spraying water flows back to the slurry pool 5 through the return pipe 13; in addition, when the filter cloth in the dust collector 3 needs to be cleaned and backflushed, similarly, the buffer water pump 7 draws water from the buffer water tank 9 or the water supply pump 6 draws clarified water from the slurry pool 5 to backflush the filter cloth through the backflush pipe 15; corresponding valves are provided on each pipeline in this dust removal system.

Claims

1. A dust removal system for a dry calcium carbide acetylene slag bin, comprising a calcium carbide slag bin (1), a spiral nozzle (2), a dust collector (3), a spray tank (4), a slurry pool (5), a water supply pump (6), a buffer water pump (7), an induced draft fan (8), a buffer water tank (9), a dust removal pipe I (10), a dust removal pipe II (11), a steam heating pipe (12), a return pipe (13), an overflow plate (14), and a backflush pipe (15), characterized in that The top of the carbide slag bin (1) is connected to the dust collector (3) through the dust removal pipe I (10), a steam tracing pipe (12) is installed inside the dust collector (3), the upper part of the dust collector (3) is connected to the spray tank (4) through the dust removal pipe II (11), the top of the spray tank (4) is connected to the induced draft fan (8), the bottom of the spray tank (4) is connected to the slurry pool (5) through the return pipe (13), and two groups of spiral nozzles (2) are installed inside the spray tank (4); the buffer water pump (7) is connected to the buffer water tank (9) through a pipeline, the water supply pump (6) is connected to the slurry pool (5) through a pipeline, and the backflush pipe (15) is connected to the dust collector (3).

2. A dust removal system for dry process calcium carbide acetylene slag bin according to claim 1, characterized in that An overflow plate (14) is provided inside the slurry pool (5), and the overflow plate (14) divides the interior of the slurry pool (5) into two parts: a clarifier pool and a muddy water pool.

3. A dust removal system for dry process calcium carbide acetylene slag bin according to claim 1, characterized in that The water supply pump (6) is connected to the clarifier of the slurry pool (5) through a pipeline.

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