Flue gas incinerator and lithium battery material roller kiln applying same

Abstract

The utility model discloses a flue gas incinerator and a lithium battery material roller kiln applying the same, and belongs to the technical field of kiln flue gas treatment, the flue gas incinerator comprises a furnace body and an air inlet device, the air inlet device is arranged at one end of the furnace body, the air inlet device comprises a first burner and a first combustion-supporting air pipe, and the first burner is arranged at the other end of the furnace body. The two side walls of the gas inlet device are arranged to be a first side face and a second side face in the smoke flowing direction respectively, the first side face and the second side face are arranged on the left side and the right side in the smoke flowing direction respectively, the first burner is arranged on the first side face, the first combustion-supporting air pipe is arranged on the second side face, and the second burner is arranged on the second side face. And the first burner and the first combustion-supporting air pipe also play a role in pushing flue gas to flow in an accelerated manner while heating and reacting, so that the flue gas conversion flow of the incinerator is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln flue gas treatment, in particular to a flue gas incinerator and a lithium battery material roller kiln using the same. Background Art

[0002] In the manufacture of lithium battery materials, roller kilns heat and sinter the materials. The high temperatures release a large amount of flue gas, which contains a large amount of harmful substances such as asphalt and tar. This is harmful to the environment. To ensure that the exhaust flue gas meets environmental protection requirements, the exhaust gas generated in the roller kiln must be harmlessly treated. Generally, the flue gas generated in the roller kiln is converted into harmless or low-harm gases through combustion, and the flue gas meets emission standards after combustion. Figure 5 The existing flue gas treatment device transports the flue gas directly to the incinerator from the bottom through the flue gas exhaust pipe. The incinerator is equipped with a burner, gas and combustion-supporting device. The burner is used to heat the flue gas in the incinerator to the ignition point, and at the same time, gas is injected to burn and convert the flue gas. After the flue gas reaches the ignition point, combustion-supporting air is introduced to make the flue gas spontaneously combust, thereby achieving the purpose of converting the flue gas. The existing flue gas incinerator takes in flue gas from the bottom, and the flue gas does not flow smoothly in the furnace, resulting in low incineration efficiency.

[0003] The existing patent application with publication number CN105953243A discloses a waste gas incinerator, including a furnace chamber, which is divided into an incineration chamber and a heat recovery chamber. A refractory brick heat storage wall is arranged in a lattice shape in the middle of the incineration chamber. The incineration chamber is connected to the air inlet through a fan. The heat recovery chamber includes a first heat recovery chamber, a second heat recovery chamber, a third heat recovery chamber and a fourth heat recovery chamber. The furnace wall of the furnace chamber is covered with a protective layer. The flue gas in the waste gas incinerator has no power assistance and the flow is not smooth, which affects the incineration efficiency. Utility Model Content

[0004] One of the purposes of the utility model is to provide a flue gas incinerator, which solves the problem of low incineration efficiency caused by insufficient flue gas flow power in existing flue gas incinerators.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0006] A flue gas incinerator comprises a furnace body and an air intake device, wherein the air intake device is arranged at one end of the furnace body, the air intake device comprises a first burner and a first combustion-supporting air duct, and the two side walls of the air intake device are respectively arranged to be a first side surface and a second side surface facing the direction of flue gas flow, the first side surface and the second side surface are respectively arranged on the left and right sides of the direction of flue gas flow, the first burner is arranged on the first side surface, and the first combustion-supporting air duct is arranged on the second side surface, and the first burner and the first combustion-supporting air duct also play a role in promoting the accelerated flow of flue gas during heating and reaction, thereby improving the flue gas conversion flow rate of the incinerator.

[0007] Furthermore, the air intake device also includes an air intake pipe and an air intake hood, one end of the air intake hood is connected to the furnace body, and the air intake pipe is connected to the other end of the air intake hood. The air intake hood is arranged between the furnace body and the air intake pipe to guide the flue gas into the furnace body.

[0008] Furthermore, the furnace body includes a furnace body, a second burner and a second combustion-supporting air duct. The second burner and the second combustion-supporting air duct are both arranged on the inner wall of the furnace body. The second combustion-supporting air duct is arranged close to the second burner. The second burner faces the direction of flue gas flow and is used to convert flue gas.

[0009] Preferably, the furnace body includes multiple second burners and multiple second combustion-supporting air ducts, and the multiple second burners and multiple second combustion-supporting air ducts are distributed on the inner wall of the right half or left half of the furnace body around the axis of the furnace body to increase the conversion rate of flue gas.

[0010] Preferably, an exhaust device is further included, which includes an exhaust hood and an exhaust pipe. The exhaust pipe is connected to the other end of the furnace body. The exhaust hood is arranged between the furnace body and the exhaust pipe to guide the converted gas to be discharged from the furnace body.

[0011] Preferably, the exhaust device is detachably connected to the other end of the furnace body, so as to facilitate cleaning and maintenance of the furnace body.

[0012] More preferably, the first burner and the second burner are gas burners and can be installed in different positions for use.

[0013] As a better option, the air intake device is detachably connected to the furnace body, so as to facilitate cleaning and maintenance of the furnace body.

[0014] As a better option, it further includes a locking structure, which is arranged at the connection between the air intake device, the exhaust device and the furnace body, and is used for the rapid disassembly and assembly of the air intake device and the exhaust device.

[0015] The second purpose of the utility model is to provide a roller kiln for lithium battery materials, which solves the problem of low flue gas incineration efficiency of existing roller kilns.

[0016] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0017] A roller kiln for lithium battery materials comprises the above-mentioned flue gas incinerator, which improves the efficiency of treating the flue gas in the kiln and prevents the accumulation of flue gas in the kiln.

[0018] The beneficial effects of the utility model are:

[0019] (1) The burner and combustion-supporting air are arranged on both sides of the air intake device of the flue gas incinerator. The burner and combustion-supporting air duct are arranged on the left and right sides of the flue gas flow direction respectively. The combined force direction of the gas blown out by the burner and the combustion-supporting air duct is the same as the flow direction of the flue gas. The thrust of the two is used to accelerate the flow speed of the flue gas, improve the flow ability of the flue gas in the furnace body, and thus improve the reaction efficiency of the flue gas.

[0020] (2) The inner wall of the furnace body of the flue gas incinerator is provided with a plurality of burners and combustion-supporting air ducts, which are distributed along the flow direction of the flue gas. The flue gas is ignited by the burners and combustion-supporting air ducts, so that the flue gas is converted at high temperature. The burners and combustion-supporting air ducts can be adjusted according to the total amount of flue gas generated in the kiln to meet the needs of large-flow flue gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A plan view of the flue gas incinerator provided by the utility model;

[0022] Figure 2 A side view of the flue gas incinerator provided by the utility model;

[0023] Figure 3 This is a side view of the flue gas incinerator provided in Example 2 of the present utility model.

[0024] Figure 4 This is a structural diagram of the roller kiln provided by the utility model.

[0025] Figure 5 It is a structural diagram of an existing incinerator in the background technology.

[0026] Reference numerals:

[0027] 1. Air intake device; 11. First side; 12. First burner; 13. First combustion-supporting air duct; 14. Second side; 15. Air intake pipe; 2. Furnace body; 21. Second burner; 22. Second combustion-supporting air duct; 23. Furnace body; 3. Exhaust device; 31. Exhaust pipe; 32. Exhaust hood; 4. Locking structure. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figures 1-4 As shown, this embodiment discloses a flue gas incinerator, including a furnace body 2 and an air intake device 1. The air intake device 1 is arranged at one end of the furnace body 2, and the air intake device 1 includes a first burner 12 and a first combustion-supporting air duct 13. The two side walls of the air intake device 1 are respectively arranged to be a first side surface 11 and a second side surface 14 facing the direction of flue gas flow, and the first side surface 11 and the second side surface 14 are respectively arranged on the left and right sides of the direction of flue gas flow, the first burner 12 is arranged on the first side surface 11, and the first combustion-supporting air duct 13 is arranged on the second side surface 14, and the first side surface 11 and the second side surface 14 form an angle, so that the first side surface 11 and the second side surface 14 point to the flow direction of the fuel gas from the left and right directions of their normal lines, and the airflow blown out after the first burner 12 burns and the combustion-supporting air entering from the first combustion-supporting air duct 13 simultaneously push the flue gas forward, and play a role in accelerating the flow of flue gas while heating the flue gas for reaction, thereby increasing the processing flow of flue gas without adding an additional fan.

[0031] Furthermore, the air intake device 1 also includes an air intake pipe 15 and an air intake hood. One end of the air intake hood is connected to the furnace body 2, and the air intake pipe 15 is connected to the other end of the air intake hood. The air intake hood is a circular variable diameter end cover, and the inlet diameter is smaller than the outlet. The air intake hood is arranged between the furnace body 2 and the air intake pipe 15. The air intake pipe 15 is used to introduce flue gas into the furnace body 2. After passing through the air intake pipe 15, the flue gas enters the furnace body 2 and maintains forward linear motion. The smoke gas encounters little resistance to flow.

[0032] Furthermore, the furnace body 2 includes a furnace body 23, a second burner 21 and a second combustion-supporting air duct 22. The second burner 21 and the second combustion-supporting air duct 22 are both arranged on the inner wall of the furnace body 23. The second combustion-supporting air duct 22 is arranged close to the second burner 21. The second burner 21 faces the direction of flue gas flow. The second burner 21 and the second combustion-supporting air duct 22 are used for heating and combustion reactions to convert flue gas into harmless gas.

[0033] More preferably, an exhaust device 3 is also included, which includes an exhaust hood 32 and an exhaust pipe 31. The exhaust pipe 31 is connected to the other end of the furnace body 2. The exhaust hood 32 is arranged between the furnace body 2 and the exhaust pipe 31. The exhaust pipe 31, the furnace body 2 and the air inlet pipe 15 are on the same straight line, and the resistance to the flue gas flow is small.

[0034] Preferably, the exhaust device 3 is detachably connected to the other end of the furnace body 2 , so as to facilitate cleaning and maintenance of the furnace body 2 and the exhaust device 3 .

[0035] More preferably, the first burner 12 and the second burner 21 are gas burners, which have high temperature, fast ignition and heating, and can be easily installed on the top wall and side wall.

[0036] Preferably, the air intake device 1 is detachably connected to the furnace body 2, which facilitates maintenance and cleaning of the furnace body 2 and the air intake device 1. If damaged, it can be quickly replaced to ensure the continuous operation of the kiln production line.

[0037] More preferably, a locking structure 4 is further included, which is arranged at the connection between the air intake device 1 and the furnace body 2. The locking structure 4 adopts a flange plate, so that the air intake device 1 and the furnace body 2 are firmly connected and the connection is highly sealed.

[0038] The working process of the flue gas incinerator is as follows:

[0039] The flue gas of the kiln enters the air intake device 1 from the air intake pipe 15, and the first burner 12 and the first combustion-supporting air duct 13 in the air intake device 1 are started. The first burner 12 burns to heat the flue gas, and the first combustion-supporting air duct 13 inputs air to mix and react with the flue gas, while promoting the flue gas to flow into the furnace body 2. The second burner 21 and the second combustion-supporting air duct 22 in the furnace body 2 heat and convert the remaining flue gas, and the converted harmless gas is discharged to the outside through the exhaust device 3.

[0040] Example 2

[0041] like Figure 3 As shown, this embodiment discloses a flue gas incinerator, which is provided with a plurality of second burners 21 and a plurality of second combustion-supporting air ducts 22 on the furnace body 2. The plurality of second burners 21 and the plurality of second combustion-supporting air ducts 22 are distributed around the axis of the furnace body 2 on the inner wall of the right half or the left half of the furnace body 2. By installing a sufficient number of second burners 21 and second combustion-supporting air ducts 22 on the furnace body 2, the flow rate of the converted flue gas is increased, thereby increasing the flue gas conversion amount.

[0042] Example 3

[0043] like Figure 4 As shown, this embodiment also discloses a roller kiln for lithium battery materials, including a flue gas incinerator. The air inlet pipe 15 of the flue gas incinerator is connected to the kiln. After the flue gas in the heating section of the kiln is inhaled, the flue gas is converted into harmless gas through a combustion reaction and then discharged to the outside. The flow rate of the discharged flue gas is high, and the flue gas is not easily accumulated in the kiln.

[0044] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. A flue gas incinerator, comprising a furnace body (2) and an air intake device (1), wherein the air intake device (1) is arranged at one end of the furnace body (2), and is characterized in that: The air intake device (1) comprises a first burner (12) and a first combustion-supporting air duct (13); the side walls of the air intake device (1) are respectively arranged as a first side surface (11) and a second side surface (14) facing the direction of flue gas flow; the first side surface (11) and the second side surface (14) are respectively arranged on the left and right sides of the direction of flue gas flow; the first burner (12) is arranged on the first side surface (11); and the first combustion-supporting air duct (13) is arranged on the second side surface (14).

2. The flue gas incinerator according to claim 1, characterized in that: The air intake device (1) further comprises an air intake pipe (15) and an air intake hood, one end of the air intake hood being in communication with the furnace body (2), the air intake pipe (15) being in communication with the other end of the air intake hood, and the air intake hood being arranged between the furnace body (2) and the air intake pipe (15).

3. The flue gas incinerator according to claim 2, characterized in that: The furnace body (2) comprises a furnace body (23), a second burner (21) and a second combustion-supporting air duct (22); the second burner (21) and the second combustion-supporting air duct (22) are both arranged on the inner wall of the furnace body (23); the second combustion-supporting air duct (22) is arranged close to the second burner (21); and the second burner (21) faces the direction of flue gas flow.

4. The flue gas incinerator according to claim 2, characterized in that: The furnace body (2) comprises a plurality of second burners (21) and a plurality of second combustion-supporting air ducts (22), and the plurality of second burners (21) and the plurality of second combustion-supporting air ducts (22) are distributed on the inner wall of the right half or the left half of the furnace body (2) around the axis of the furnace body (2).

5. The flue gas incinerator according to claim 3 or 4, characterized in that: The invention also includes an exhaust device (3), wherein the exhaust device (3) includes an exhaust hood (32) and an exhaust pipe (31), wherein the exhaust pipe (31) is connected to the other end of the furnace body (2), and the exhaust hood (32) is arranged between the furnace body (2) and the exhaust pipe (31).

6. The flue gas incinerator according to claim 5, characterized in that: The exhaust device (3) is detachably connected to the other end of the furnace body (2).

7. The flue gas incinerator according to claim 6, characterized in that: The first burner (12) and the second burner (21) are gas burners.

8. The flue gas incinerator according to claim 1, characterized in that: The air intake device (1) is detachably connected to the furnace body (2).

9. The flue gas incinerator according to claim 8, characterized in that: It also includes a locking structure (4), which is arranged at the connection between the air intake device (1), the exhaust device (3) and the furnace body (2).

10. A roller kiln for lithium battery materials, characterized in that: The invention comprises the flue gas incinerator according to any one of claims 1 to 9.

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