Tail gas recovery device for silicon carbide smelting furnace

Abstract

The utility model discloses a silicon carbide smelting furnace tail gas recovery device in the technical field of metallurgy, which comprises a tail gas absorption tower, a first box body and a second box body have the same structure, liquid injection ports are arranged on the upper surfaces of the first box body and the second box body, and the top of a water pump is fixedly connected with a first connecting pipe. One end of the first connecting pipe extends to the inner side of the tail gas absorption tower, the spray head is arranged above the filter layer, a special pump is fixedly mounted at the top of the second box body, a second connecting pipe is fixedly connected to the top of the special pump, and one end of the second connecting pipe extends to the inner side of the tail gas absorption tower. The foaming device is arranged above the activated carbon layer, foaming liquid prepared in the second box body is conveyed into the foaming device through an arranged special pump, formed foam is sprayed to a tail gas dust source, a foam layer is formed on the periphery of the dust source, dust is wetted and bonded, and the effects of isolating the tail gas dust source and inhibiting dust flying are achieved. And the tail gas dust falling treatment effect is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy, and particularly relates to a tail gas recovery device for a silicon carbide smelting furnace. Background Technique

[0002] Silicon carbide, also known as carborundum, is made by high-temperature smelting of raw materials such as quartz sand, petroleum coke (or coal coke), and sawdust (salt needs to be added when producing green silicon carbide) through a resistance furnace. Silicon carbide is also called carbon silicon stone. Silicon carbide is the most widely used and economical one, and can be called emery or refractory sand. It has excellent thermal conductivity and is a semiconductor. All silicon carbide production in China uses rectangular straight-type silicon carbide smelting furnaces, which are smelted outdoors, and the tail gas is burned and discharged into the atmosphere, not only wasting energy but also causing great pollution to the atmosphere. Therefore, it is necessary to equip the silicon carbide smelting furnace with a tail gas recovery device.

[0003] During the process of recovering the tail gas of the existing silicon carbide smelting furnace, the dust and impurities in the tail gas cannot be removed well, which easily affects the effect of recycling the recovered tail gas later. For this reason, we propose a tail gas recovery device for a silicon carbide smelting furnace. Content of the Utility Model

[0004] The purpose of the utility model is to provide a tail gas recovery device for a silicon carbide smelting furnace to solve the problem that the existing tail gas recovery of the silicon carbide smelting furnace cannot remove the dust and impurities in the tail gas well as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A tail gas recovery device for a silicon carbide smelting furnace includes a tail gas absorption tower. An air inlet and a drain pipe are arranged on one side of the tail gas absorption tower. A valve is arranged on one side of the drain pipe. A collection pipe is arranged on the top of the tail gas absorption tower. A first box body and a second box body are arranged on one side of the tail gas absorption tower. A water pump is arranged on the top of the first box body. A first connecting pipe is arranged on the top of the water pump. A spray head is arranged at one end of the first connecting pipe. A filter layer and an activated carbon layer are arranged inside the tail gas absorption tower. A special pump is arranged on the top of the second box body. A second connecting pipe is arranged on the top of the special pump. A foaming device is arranged at one end of the second connecting pipe.

[0006] Preferably, the air inlet and the drain pipe are respectively hermetically connected to the lower side surface of the tail gas absorption tower, and the collection pipe is hermetically communicated with the inside of the tail gas absorption tower.

[0007] Preferably, the first box body and the second box body have the same structure, and liquid injection ports are arranged on their upper surfaces.

[0008] Preferably, the water pump is fixedly connected to the first connecting pipe, and one end of the first connecting pipe extends to the inside of the tail gas absorption tower.

[0009] Preferably, the spray head is arranged above the filter layer, and a special pump is fixedly installed on the top of the second box body.

[0010] Preferably, the top of the special pump is fixedly connected with a second connecting pipe, one end of the second connecting pipe extends to the inside of the tail gas absorption tower, and the foaming device is arranged above the activated carbon layer.

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

[0012] The liquid foam added inside the second box body is sent to the inside of the foaming device by the arranged special pump, and the formed foam is shot onto the tail gas dust source, forming a foam layer around the dust source, wetting and bonding the dust, playing a role in isolating the tail gas dust source and inhibiting the dust from flying, and further improving the effect of tail gas dust reduction treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of the utility model;

[0014] Figure 2 is the side structural schematic diagram of the utility model;

[0015] Figure 3 is the front sectional structural schematic diagram of the utility model.

[0016] In the figure: 1. Tail gas absorption tower; 2. Air inlet; 3. Drain pipe; 4. Valve; 5. Collection pipe; 6. First box body; 7. Water pump; 8. First connecting pipe; 9. Spray head; 10. Filter layer; 11. Second box body; 12. Special pump; 13. Second connecting pipe; 14. Foaming device; 15. Activated carbon layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-3, the present utility model provides a technical solution: a tail gas recovery device for a silicon carbide smelting furnace, which includes a tail gas absorption tower 1. An air inlet 2 and a drain pipe 3 are provided on one side of the tail gas absorption tower 1. A valve 4 is provided on one side of the drain pipe 3. A collection pipe 5 is provided at the top of the tail gas absorption tower 1. A first box body 6 and a second box body 11 are provided on one side of the tail gas absorption tower 1. A water pump 7 is provided at the top of the first box body 6. A first connecting pipe 8 is provided at the top of the water pump 7. One end of the first connecting pipe 8 is provided with a spray head 9. A filter layer 10 and an activated carbon layer 15 are provided inside the tail gas absorption tower 1. A special pump 12 is provided at the top of the second box body 11. A second connecting pipe 13 is provided at the top of the special pump 12. One end of the second connecting pipe 13 is provided with a foaming device 14.

[0019] Specifically, the air inlet 2 and the drain pipe 3 are respectively and sealingly connected to the lower side surface of the tail gas absorption tower 1. The collection pipe 5 is sealingly communicated with the inside of the tail gas absorption tower 1. The first box body 6 and the second box body 11 have the same structure, and liquid injection ports are provided on their upper surfaces. The top of the water pump 7 is fixedly connected to the first connecting pipe 8. One end of the first connecting pipe 8 extends to the inside of the tail gas absorption tower 1. The spray head 9 is arranged above the filter layer 10. The special pump 12 is fixedly installed at the top of the second box body 11. The top of the special pump 12 is fixedly connected to the second connecting pipe 13. One end of the second connecting pipe 13 extends to the inside of the tail gas absorption tower 1. The foaming device 14 is arranged above the activated carbon layer 15.

[0020] In this embodiment, after the tail gas discharge pipe is sealingly connected to the end of the air inlet 2, the tail gas will enter the inside of the tail gas absorption tower 1. The impurities in the upward floating tail gas can be filtered through the provided filter layer 10. The water source added to the inside of the first box body 6 is pumped by the water pump 7 and delivered to the inside of the spray head 9, so as to cool down and collect the tail gas. Through the provided activated carbon layer 15, the harmful substances in the tail gas can be adsorbed and removed, thereby purifying the tail gas and reducing environmental pollution. The liquid foam added to the inside of the second box body 11 is sent to the inside of the foaming device 14 by the provided special pump 12, and the formed foam is sprayed onto the tail gas dust source, forming a foam layer around the dust source, wetting and bonding the dust, playing a role in isolating the tail gas dust source and suppressing the dust flying, and further improving the effect of dust removal treatment for the tail gas. Through the provided drain pipe 3 and valve 4, it is convenient to discharge the waste liquid inside the tail gas absorption tower 1.

[0021] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tail gas recovery device for a silicon carbide smelting furnace, comprising a tail gas absorption tower (1), characterized in that: An air inlet (2) and a drain pipe (3) are provided on one side of the tail gas absorption tower (1), a valve (4) is provided on one side of the drain pipe (3), a collecting pipe (5) is provided on the top of the tail gas absorption tower (1), a first box (6) and a second box (11) are provided on one side of the tail gas absorption tower (1), a water pump (7) is provided on the top of the first box (6), a first connecting pipe (8) is provided on the top of the water pump (7), a nozzle (9) is provided at one end of the first connecting pipe (8), a filter layer (10) and an activated carbon layer (15) are provided on the inner side of the tail gas absorption tower (1), a special pump (12) is provided on the top of the second box (11), a second connecting pipe (13) is provided on the top of the special pump (12), and a foaming device (14) is provided at one end of the second connecting pipe (13).

2. The tail gas recovery device for silicon carbide smelting furnace according to claim 1, characterized in that: The lower side surface of the tail gas absorption tower (1) is sealedly connected to an air inlet (2) and a drain pipe (3), and the collecting pipe (5) is sealedly connected to the inner side of the tail gas absorption tower (1).

3. The tail gas recovery device for silicon carbide smelting furnace according to claim 1, characterized in that: The first box body (6) and the second box body (11) have the same structure, and both are provided with a liquid injection port on their upper surfaces.

4. The tail gas recovery device for silicon carbide smelting furnace according to claim 1, characterized in that: A first connecting pipe (8) is fixedly connected to the top of the water pump (7), and one end of the first connecting pipe (8) extends to the inside of the tail gas absorption tower (1).

5. The tail gas recovery device for silicon carbide smelting furnace according to claim 1, characterized in that: The nozzle (9) is arranged above the filter layer (10), and a dedicated pump (12) is fixedly installed on the top of the second box body (11).

6. The tail gas recovery device for silicon carbide smelting furnace according to claim 1, characterized in that: A second connecting pipe (13) is fixedly connected to the top of the dedicated pump (12), one end of the second connecting pipe (13) extends to the inside of the tail gas absorption tower (1), and the foaming device (14) is arranged above the activated carbon layer (15).

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