Stopping filler type spark trapping device

Abstract

The invention discloses a filler blocking type spark trapping device. The shell (2) is mounted at the upper part or the side part of an original flue in front of a bag-type dust collector; a clean flue gas inlet baffle door (3) is arranged in a flue gas inlet, a corrugated plate type fire remover (4) is arranged above the clean flue gas inlet baffle door (3), a hollow ball packing layer (5) is arranged above the corrugated plate type fire remover (4), soot blowers (6) are arranged above the corrugated plate type fire remover (4) and the hollow ball packing layer (5), and a flow guide device (7) is arranged above the hollow ball packing layer (5). The flow guide device (7) is located at the elbow position of the pipeline, and a purified flue gas outlet baffle door (8) is arranged in the flue gas outlet; an original flue gas baffle door (9) is arranged on the original flue; and the pre-trapping plates (1) are arranged in the original flue in a staggered manner. Sparks in flue gas are remarkably removed, bag burning of the dust remover is avoided, the dust removal efficiency is improved, spontaneous combustion of dust in the ash hopper is avoided, and the production safety is improved.

Description

Technical Field

[0001] This invention relates to a spark capture device in the fields of metallurgy and dust removal and environmental protection, and particularly to a barrier packing type spark capture device. Background Technology

[0002] Baghouse dust collectors, as the mainstream technology for industrial flue gas purification, possess the ability to capture fine particles and boast industry-leading dust removal efficiency, playing a crucial role in achieving ultra-low emission goals. However, baghouse dust collectors still face many challenges in certain industrial flue gases. In some metallurgical processes such as sintering, electric arc steelmaking, and aluminum electrolysis, sparks (high-temperature incandescent particles) often accompany the flue gas into the dust collector, easily causing filter bag burn-through and structural damage, which can lead to filter bag failure, excessive emissions, or even fire accidents. In these high-risk scenarios, spark traps should be mandatory auxiliary equipment for baghouse dust collectors.

[0003] Traditional spark traps, such as swirling, baffle, or mesh traps, while achieving some degree of spark capture and separation, have significant drawbacks due to their design principles and structural limitations. Swirling traps are large in size but have a small effective interception area, allowing spark particles to easily pass through the gaps. Baffle or mesh traps, with their fixed pore sizes, cannot adapt to sparks of different sizes, and are particularly prone to secondary escape of sparks in high-speed flue gas; furthermore, their dense arrangement significantly increases system drag. Summary of the Invention

[0004] This invention provides a barrier packing type Mars capture device to address the problems existing in the prior art.

[0005] The technical solution of this invention is: a barrier packing type spark trapping device, comprising a shell, the shell being formed by wall panels, reinforcing ribs, beams and diagonal braces; the shell is installed on the upper part or side of the original flue before the bag filter; the shell above the original flue is an n-shaped pipe with bends, a clean flue gas inlet baffle is provided in the flue gas inlet of the n-shaped pipe with bends, a corrugated plate flame arrester is provided above the clean flue gas inlet baffle, a hollow ball packing layer is provided above the corrugated plate flame arrester, a soot blower is provided above the corrugated plate flame arrester and the hollow ball packing layer, a flow guiding device is provided above the hollow ball packing layer, the flow guiding device is located at the bend of the pipe, a clean flue gas outlet baffle is provided in the flue gas outlet of the n-shaped pipe with bends; an original flue gas baffle is provided on the original flue; pre-capture plates are arranged in a staggered manner inside the original flue, the pre-capture plates being located below the flue gas inlet of the n-shaped pipe with bends.

[0006] According to an embodiment of the present invention, the pre-collection plate is made of metal wire mesh and is equipped with a rapping dust removal device.

[0007] According to an embodiment of the present invention, the corrugated plate fire extinguisher is composed of metal corrugated plate units. The surface of the metal corrugated plate units is roughened. The thickness of the metal corrugated plate is 0.5–1.2 mm. The inclination angle of the corrugated plate is designed to be 45°~60°. The corrugated plates are arranged in pairs to form staggered flow channels.

[0008] According to an embodiment of the present invention, the hollow sphere packing layer consists of packing, a supporting grid, and a pressing device. The packing is the internal packing of the hollow sphere. The outer shell of the hollow sphere is made of high-temperature resistant organic material or metal material, and the inside is filled with refractory fluff.

[0009] According to an embodiment of the present invention, the soot blower is uniformly distributed around the corrugated plate fire extinguisher and the hollow ball packing layer on the side wall of the shell.

[0010] According to an embodiment of the present invention, the soot blower is an acoustic soot blower, which consists of a sound generator, a resonant tube, and a programmable control device.

[0011] According to an embodiment of the present invention, an ash discharge hopper is provided at the bottom of the original flue.

[0012] A spark arrestor with a packing material is added to the upper or side of the original flue. The flue gas passes through a clean flue gas inlet damper, a corrugated plate flame arrester, and a hollow ball packing layer to remove sparks, and then returns to the original flue gas through a clean flue gas outlet damper. An original flue gas damper is installed on the original flue gas to switch the flue gas through the pipeline.

[0013] The surface of the corrugated metal plate unit is roughened to increase spark retention.

[0014] The corrugated plate is designed with an inclination angle of 45°~60°, and the inclination angle is increased for flue gas with more sparks.

[0015] The ash discharge hopper is equipped with a manual gate valve and an airlock discharge valve.

[0016] The beneficial technical effects of this invention are: significantly removing sparks from flue gas, preventing dust collector bags from burning, improving dust removal efficiency, preventing spontaneous combustion of dust in the ash hopper, and improving production safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a barrier packing type Mars capture device.

[0018] Figure 1 In the middle: 1-Pre-collection plate; 2-Shell; 3-Clean flue gas inlet damper; 4-Corrugated plate flame extinguisher; 5-Hollow sphere packing layer; 6-Soot blower; 7-Flow guiding device; 8-Clean flue gas outlet damper; 9-Original flue gas damper; 10-Ash hopper. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] A spark trapping device with a blocking packing structure, wherein the shell 2 is formed by wall panels, reinforcing ribs, beams and diagonal braces; the shell 2 is installed on the upper or side of the original flue before the bag filter; the shell 2 is provided with a clean flue gas inlet baffle 3, a corrugated plate flame arrester 4, a hollow ball packing layer 5, a soot blower 6, a flow guiding device 7, and a clean flue gas outlet baffle 8; the original flue is provided with a pre-collection plate 1 and an original flue gas baffle 9; and an ash discharge hopper 10 is located at the bottom of the original flue.

[0021] The casing 2 is an n-shaped pipe with bends above the original flue.

[0022] By adjusting the clean flue gas inlet damper 3, the clean flue gas outlet damper 8, and the original flue gas damper 9, the flue gas can be switched through the pipeline, and the spark trap can be disconnected for regular packing maintenance and replacement, as well as internal component inspection and maintenance.

[0023] The corrugated plate fire extinguisher 4 is arranged above the clean flue gas inlet damper 3. The surface of the metal corrugated plate unit is roughened to increase spark retention; the plate thickness is usually 0.5–1.2 mm.

[0024] The corrugated plate is designed with an inclination angle of 45°~60°. The inclination angle is increased for flue gas with more sparks. The corrugated plates are arranged in pairs to form staggered flow channels.

[0025] Hollow sphere packing layer 5 is arranged above corrugated plate fire extinguisher 6. Hollow sphere packing layer 5 consists of packing, support grid and clamping device.

[0026] The filler can be hollow spheres with a diameter of 80-100mm. The outer shell of the hollow spheres is made of high-temperature resistant organic materials or metal.

[0027] Hollow spheres are filled with refractory fluff to improve fire-retardant efficiency. Hollow spheres filled with refractory fluff are selected, with the fluff arranged in layers or spirals.

[0028] Differential pressure sensors are installed before and after the hollow sphere packing layer 5 to monitor the increase in resistance and perform dust removal periodically.

[0029] If the resistance is still higher than the set value after cleaning, the original flue gas damper door 9 can be switched to cut out the spark capture device, and the hollow ball packing can be removed and replaced; the original hollow ball packing can be cleaned and regenerated.

[0030] Soot blowers 6 are installed on the side wall of the spark capture device. Soot blowers 6 are arranged in multiple layers and distributed above the corrugated plate fire extinguisher 4 and the hollow ball packing layer 5.

[0031] The soot blower 6 should preferably be an acoustic soot blower, which consists of a sound generator, a resonant tube and a programmable control device; it should be cleaned at fixed intervals.

[0032] Ash discharge hopper 10 is located at the bottom of the original flue. Ash discharge hopper 10 is equipped with a manual gate valve and an airlock unloading valve. After the sparks are captured, they fall into ash discharge hopper 10 and are transported to the ash silo by pneumatic conveying or scraper conveyor.

[0033] This invention is not limited to the specific details of the above-described solution. Any modifications or adjustments made within the scope of the concept and principle of this invention are within the protection scope of this invention.

Claims

1. A barrier packing type Mars capture device, characterized in that: The system includes a housing (2), which is formed by wall panels, reinforcing ribs, beams, and diagonal braces. The housing (2) is installed on the upper or side of the original flue before the bag filter. Above the original flue, the housing (2) is an n-shaped pipe with bends. A clean flue gas inlet baffle (3) is installed inside the flue gas inlet of the n-shaped pipe with bends. A corrugated plate fire extinguisher (4) is installed above the clean flue gas inlet baffle (3). A hollow sphere packing layer (5) is installed above the corrugated plate fire extinguisher (4). A soot blower (6) is installed above the corrugated plate fire extinguisher (4) and the hollow ball packing layer (5). A flow guiding device (7) is installed above the hollow ball packing layer (5). The flow guiding device (7) is located at the bend of the pipe. A clean flue gas outlet baffle (8) is installed in the flue gas outlet of the n-type pipe with bend. An original flue gas baffle (9) is installed on the original flue. Pre-collection plates (1) are arranged in a staggered manner inside the original flue. The pre-collection plates (1) are located below the flue gas inlet of the n-type pipe with bend.

2. The barrier packing type Mars capture device according to claim 1, characterized in that: The pre-collection plate (1) is made of metal wire mesh and equipped with a vibration cleaning device.

3. The barrier packing type Mars capture device according to claim 1, characterized in that: The corrugated plate fire extinguisher (4) is composed of metal corrugated plate units. The surface of the metal corrugated plate units is roughened. The thickness of the metal corrugated plate is 0.5–1.2 mm. The inclination angle of the corrugated plate is designed to be 45°~60°. The corrugated plates are arranged in pairs to form interlaced flow channels.

4. The barrier packing type Mars capture device according to claim 1, characterized in that: The hollow sphere packing layer (5) consists of packing, support grid and pressing device. The packing is the internal packing of the hollow sphere. The outer shell of the hollow sphere is made of high temperature resistant organic material or metal material, and the inside is filled with refractory fluff.

5. The barrier packing type Mars capture device according to claim 1, characterized in that: The soot blower (6) is installed on the side wall of the shell (2) and is evenly distributed around the corrugated plate fire extinguisher (4) and the hollow ball packing layer (5).

6. The barrier packing type Mars capture device according to claim 1, characterized in that: The soot blower (6) is an acoustic soot blower, which consists of a sound generator, a resonant tube and a programmable control device.

7. The barrier packing type Mars capture device according to claim 1, characterized in that: The original flue is equipped with an ash discharge hopper (10) at the bottom.

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