Waste gas incineration device

Abstract

The utility model discloses a waste gas incineration device, and belongs to the technical field of waste gas incineration. The biomass gasification furnace comprises a furnace body and a combustion chamber arranged in the furnace body, a partition plate is arranged in the combustion chamber and divides the combustion chamber into a plurality of branch channels, the branch channels are sequentially communicated to form a bent combustion channel, an air inlet of the combustion channel is connected with an air inlet pipeline, and an air outlet of the combustion channel is connected with an air outlet pipeline. A plurality of heating sources are arranged in the combustion channel in the extending direction of the combustion channel. According to the utility model, the bent combustion channel is arranged in the combustion chamber, so that the circulation path of waste gas is greatly prolonged; meanwhile, a plurality of heating sources are arranged in the combustion channel in the extending direction of the combustion channel, so that the waste gas is in a state of heating while circulating, and the heat absorbed by the waste gas is continuously increased along with continuous advancing of the waste gas, so that sufficient combustion of the waste gas is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas incineration, and more specifically relates to a waste gas incineration device. Background Art

[0002] In the metal soft magnetic industry, powder molded blanks need to be solidified and sintered to improve the strength of the finished product. During the sintering and solidification process, a certain amount of waste gas will be generated, which will pollute the environment if directly discharged. The usual practice is to burn the waste gas to meet the emission standards.

[0003] At present, the treatment methods for exhaust gas purification include combustion, adsorption, condensation and plasma oxidation, among which combustion is the most common. However, due to the complex composition of exhaust gas and the generally low calorific value of exhaust gas, there is often incomplete combustion, which fails to meet the emission standards. Therefore, how to achieve full and efficient combustion of exhaust gas has always been a hot topic in the industry.

[0004] After searching, a tail gas combustion device is disclosed in the patent CN216131935U. The application includes: a combustion chamber, with an air outlet on the top; an air intake pipe, arranged in a ring shape on the lower outer side of the combustion chamber, and a plurality of air intake holes connected to the combustion chamber are evenly arranged on the side close to the combustion chamber, and the air intake pipe is connected to the tail gas inlet and the air inlet; an igniter is arranged in the combustion chamber; a heating device is arranged in the combustion chamber. The application makes the tail gas and air enter the combustion chamber more evenly distributed through the ring-shaped air intake pipe, and burns more fully; the heating device is arranged to maintain a high temperature in the combustion chamber to ensure full combustion of the tail gas.

[0005] In the patent CN111351059A, an environmentally friendly waste gas combustion furnace is disclosed. The application includes a furnace body enclosing a combustion chamber, and a waste gas preheating pipe is arranged in the combustion chamber, and the waste gas preheating pipe is provided with a waste gas inlet and a waste gas outlet. The waste gas preheating pipe is provided with a dust removal brush that can slide along the waste gas preheating pipe, and the dust removal brush sleeve is arranged on the waste gas preheating pipe. A smoke guide device is also provided in the combustion chamber. The waste gas combustion furnace of the application uses the heat generated in the combustion chamber to preheat the waste gas, which is conducive to the waste gas to obtain the optimal combustion temperature, and the waste gas and the fuel gas are fully mixed, so that the combustion effect is better.

[0006] In the patent CN108980865A, a waste gas combustion device is disclosed. The application includes a combustion chamber, an air inlet and an exhaust port are provided on the combustion chamber, a burner is connected to the air inlet, the burner is inserted into the combustion chamber through the air inlet, the flame end of the burner faces into the combustion chamber, and the gap between the burner and the air inlet is used to transport waste gas into the combustion chamber. Since there is a gap between the burner and the air inlet, when the waste gas enters the combustion chamber, the waste gas surrounds the flame, so that the basis for the waste gas combustion is sufficient, and at the same time, the flame burns with suction, sucking the waste gas into the combustion chamber to surround the flame.

[0007] The above applications all involve technical improvements for the complete combustion of exhaust gas, but there is still room for optimization, and the industry has never stopped researching the technology of exhaust gas combustion. Utility Model Content

[0008] 1. Problems to be solved

[0009] In view of the problem of incomplete combustion of waste gas in existing waste gas combustion devices, the utility model provides a waste gas incineration device. The waste gas incineration device of the utility model greatly extends the heating path of the waste gas in the combustion chamber by designing the combustion channel to be curved and arranging multiple heating sources in the combustion channel, which is conducive to the complete combustion of the waste gas.

[0010] 2. Technical solution

[0011] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0012] The utility model discloses a waste gas incineration device, comprising a furnace body and a combustion chamber arranged in the furnace body; a curved combustion channel is arranged in the combustion chamber, an air inlet of the combustion channel is connected to an air inlet pipe, and an air outlet is connected to an air outlet pipe; and a plurality of heating sources are arranged in the combustion channel along the extension direction of the combustion channel.

[0013] Furthermore, at least one partition is provided in the combustion chamber, and the partition divides the combustion chamber into a plurality of branch channels, and the plurality of branch channels are connected in sequence to form the combustion channel.

[0014] Furthermore, the number of the partitions is an odd number, two adjacent partitions are parallel and staggered, and two isolated partitions are parallel and aligned; wherein the flow opening between the two branch channels formed by the partition near the air inlet is away from the air inlet.

[0015] Furthermore, the partitions are distributed up and down.

[0016] Furthermore, one partition is provided, and a gap is left between the end of the partition away from the air inlet and the inner wall of the combustion chamber.

[0017] Furthermore, the air inlet and the air outlet are located on the same side of the furnace body.

[0018] Furthermore, at least a portion of the air outlet pipe is sleeved on the air inlet pipe.

[0019] Furthermore, the air outlet end of the air outlet pipe is connected to a fan, and a bypass valve is provided on the air outlet pipe near the fan.

[0020] Furthermore, the furnace body comprises a shell and a cover body arranged on the shell, wherein the outer edge of the cover body is bent downward to form a bent portion, and the inner peripheral wall of the shell is formed with a groove for the bent portion to be inserted into.

[0021] Furthermore, the heating source is an electric heating rod; the partition is made of silicon carbide; and a plurality of temperature sensors are arranged in the combustion chamber, one of which is arranged near the air outlet.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] (1) The utility model provides a waste gas incineration device, which greatly extends the flow path of the waste gas by providing a curved combustion channel in the combustion chamber; at the same time, a plurality of heating sources are provided in the combustion channel along the extension direction of the combustion channel, so that the waste gas is in a state of being heated while flowing, and as the waste gas continues to move forward, the heat absorbed by it also continues to increase, which is conducive to the complete combustion of the waste gas.

[0025] (2) The waste gas incineration device of the utility model sets the outlet pipe on the inlet pipe, and can use the high-temperature waste gas after combustion to preheat the waste gas to be burned, thereby greatly improving the utilization rate of heat.

[0026] (3) The waste gas incineration device of the utility model can adjust the pressure at the outlet end of the gas outlet pipe through the cooperation of the fan and the bypass valve to balance the internal pressure of the entire combustion chamber, ensure the stability of the waste gas circulation process, and also help promote the full combustion of the waste gas.

[0027] (4) In the waste gas incineration device of the utility model, the shell and the cover adopt a concave-convex snap-fit ​​fit, which is beneficial to ensure the sealing performance of the connection between the two, thereby achieving a better insulation effect. At the same time, the partition is made of silicon carbide, which has good thermal conductivity, that is, high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a waste gas incineration device of the utility model;

[0029] Figure 2 This is a bottom view of a waste gas incineration device of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the furnace body in the utility model;

[0031] Figure 4 for Figure 2 It is the cross-sectional view along AA direction;

[0032] Figure 5 This is an implementation method of the partition in the utility model;

[0033] Figure 6 Another implementation of the partition board of the utility model;

[0034] Figure 7 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0035] Figure 8 for Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0036] In the figure: 1, furnace body; 11, shell; 12, cover; 13, bending part; 14, groove; 15, lifting ear; 16, insulation box; 17, protection box; 2, combustion chamber; 21, air inlet; 22, air outlet;

[0037] 3. Air inlet pipe; 4. Air outlet pipe; 5. Heating source; 6. Partition; 7. Fan; 8. Bypass valve. DETAILED DESCRIPTION

[0038] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] The utility model is further described below in conjunction with specific embodiments.

[0041] refer to Figure 1 , Figure 4As shown, a waste gas incineration device of this embodiment includes a furnace body 1 and an air inlet pipe 3 and an air outlet pipe 4 arranged on the furnace body 1. The furnace body 1 has a combustion chamber 2, and a curved combustion channel is arranged in the combustion chamber 2. The combustion channel is connected to the air inlet pipe 3 through an air inlet 21, and is connected to the air outlet pipe 4 through an air outlet 22. At the same time, a plurality of heating sources 5 are arranged in the combustion channel along the extension direction of the combustion channel.

[0042] The waste gas incineration device of this embodiment has a curved combustion channel in the combustion chamber 2, which greatly extends the flow path of the waste gas in the combustion chamber 2. At the same time, multiple heating sources 5 are provided in the combustion channel, so that the waste gas is in a state of being heated while flowing, and as the waste gas continues to move forward, the heat absorbed by it also continues to increase, which is conducive to the full combustion of the waste gas.

[0043] In addition, compared with the traditional point heating or point combustion method, in order to ensure that some low calorific value exhaust gas can be fully burned, more energy consumption is required. In this embodiment, the exhaust gas can continuously accumulate heat during the circulation process through the line heating method, which greatly reduces energy consumption while ensuring full combustion.

[0044] Specifically, Figure 3 , Figure 8 As shown, the furnace body 1 comprises a shell 11 and a cover 12 disposed on the shell 11. The outer edge of the cover 12 is bent downward to form a bent portion 13, and the inner peripheral wall of the shell 11 is formed with a groove 14 for the bent portion 13 to be inserted into.

[0045] In this embodiment, the concave-convex snap-fit ​​structure between the shell 11 and the cover 12 is not only convenient for assembly, but also beneficial for ensuring the sealing performance of the connection between the two, thereby achieving a better insulation effect. In addition, in order to facilitate the movement of the cover 12 and the entire furnace body 1, a handle is provided on the top of the cover 12, and a lifting ear 15 is provided on the outer peripheral wall of the shell 11.

[0046] Furthermore, a heat preservation box 16 is provided at the connection between the air outlet pipe 4 and the shell 11 to achieve a good heat preservation effect on the connection between the two.

[0047] like Figure 2 , Figure 7 As shown, a partition 6 is provided in the combustion chamber 2, and the partition 6 divides the combustion chamber 2 into a plurality of branch channels, and the plurality of branch channels are connected in sequence to form the above-mentioned combustion channel, and a plurality of heating sources 5 are provided in each branch channel along its extension direction.

[0048] In order to further extend the flow path of the exhaust gas to achieve a sufficient combustion effect, multiple baffles 6 can be provided. Of course, the specific number and distribution of baffles 6 can be adjusted according to the actual situation. However, it should be noted that no matter how many baffles 6 are provided, one end of the first baffle 6 needs to be in contact with the inner side wall of the combustion chamber 2 where the air inlet 21 is provided (i.e., Figure 5 The other end of the partition plate 6 needs to be connected to the other opposite inner wall of the combustion chamber 2 (i.e. Figure 5 A flow gap is left between the two (on the right side in the figure) for the exhaust gas to pass through.

[0049] When multiple partitions 6 are provided, the second partition 6 is provided in parallel with the first partition 6, and can be distributed up and down or front and back, and the second partition 6 is provided in the opposite manner to the first partition 6, that is, a flow gap is left between the left end of the second partition 6 and the right inner wall of the combustion chamber 2. The third partition 6 is provided in the same manner as the first partition 6, the fourth partition 6 is provided in the same manner as the second partition 6, and so on.

[0050] That is to say, two adjacent partitions 6 are parallel and staggered, and two isolated partitions 6 (separated by a partition in the middle) are parallel and aligned, so that the flow gaps formed at the ends of the two partitions 6 are distributed away from each other, thereby forming a combustion channel that is as long as possible.

[0051] In addition, it should be noted that the first partition 6 and the second partition 6 are defined by the distance between them and the air inlet 21. The first partition 6 is the closest to the air inlet 21, and so on. At the same time, for the convenience of description, the above and below upper, lower, left, right, front, and rear are based on the paper direction of the corresponding drawings.

[0052] exist Figure 5 , an implementation of two partitions 6 is given. Specifically, the two partitions 6 are distributed up and down, wherein the first partition 6 is located at the bottom, the left end of the first partition 6 is connected to the left inner wall of the combustion chamber 2, and a flow gap is left between the right end and the right inner wall of the combustion chamber 2. The second partition 6 is located at the top, the left end of the second partition 6 is connected to the left inner wall of the combustion chamber 2, and the right end is connected to the right inner wall of the combustion chamber 2. At this time, the air inlet 21 and the air outlet 22 are respectively distributed at the two ends of the combustion chamber 2.

[0053] exist Figure 6In the embodiment of the invention, three partitions 6 are provided. Specifically, the three partitions 6 are distributed up and down, and they are the first, second, and third partitions from bottom to top. The left end of the first partition 6 is connected to the left inner wall of the combustion chamber 2, and a flow gap is left between the right end and the right inner wall of the combustion chamber 2. The second partition 6 is parallel to the first partition 6 and staggered, and the third partition 6 is parallel to the first partition 6 and aligned. At this time, the air inlet 21 and the air outlet 22 are distributed at the same end of the combustion chamber 2.

[0054] Through analysis, it can be known that when the number of the partitions 6 is odd, the air inlet 21 and the air outlet 22 are distributed at the same end of the combustion chamber 2. When the number of the partitions 6 is even, the air inlet 21 and the air outlet 22 are distributed at both ends of the combustion chamber 2. The specific distribution method can be determined according to the specific production situation. At the same time, it should be noted that although the partitions 6 are formed by the upper and lower distribution, they can also be distributed in the front and back.

[0055] like Figure 4 As shown, in this embodiment, only one baffle 6 is provided, and it is horizontally arranged, so as to divide the combustion chamber 2 into two upper and lower branch channels. One of the branch channels is connected to the air inlet 21 and the air inlet 3, and the other branch channel is connected to the air outlet 4 through the air outlet 22, and the flow gap between the two branch channels is far away from the air inlet 21 end.

[0056] The heating source 5 is an electric heating rod; the partition 6 is made of silicon carbide, which has good thermal conductivity and high temperature resistance. At the same time, a protective box 17 is provided on the outer wall of the housing 11 to protect the line connected to the heating source 5.

[0057] In addition, in order to facilitate the monitoring of the working state and temperature of the heating rod in the combustion chamber 2, an observation window is provided on the furnace body 1. At the same time, a temperature sensor may be provided in the combustion chamber 2. Preferably, a plurality of temperature sensors are provided along the exhaust gas flow path, and at least one temperature sensor is provided at a position close to the air outlet 22. By comparing the temperature at this location with the temperature at other locations, it can be determined whether the exhaust gas is fully burned. This is because the exhaust gas releases heat when it burns, causing the temperature at this location to increase. If the temperature at the air outlet 22 is lower than the temperature at any other location, it means that the exhaust gas has completed combustion before entering the air outlet 22; otherwise, it means that the exhaust gas has not been fully burned.

[0058] In order to improve the utilization rate of heat, the waste gas incineration device of this embodiment further optimizes the specific arrangement of the gas outlet pipe 4.

[0059] Specifically, refer to Figure 1 , Figure 2As shown, the outlet pipe 4 includes a main pipe and two branch pipes. One end of the main pipe is connected to the air inlet 21 through the branch pipe, and the other end is connected to the air outlet 22 through another branch pipe. At the same time, the main pipe is sleeved on the air inlet pipe 3. This is because the exhaust gas after combustion discharged through the main pipe has a high temperature, and the main pipe is sleeved on the air inlet pipe 3, and the temperature can be used to perform heat exchange on the exhaust gas to be burned, thereby achieving the purpose of improving the heat utilization rate.

[0060] In addition, in order to balance the internal pressure of the combustion chamber 2 and ensure the stability of the exhaust gas flow process, in this embodiment, a fan 7 is connected to the outlet end of the exhaust pipe 4. At the same time, a bypass valve 8 is provided on the exhaust pipe 4 near the fan 7. Through the cooperation of the fan 7 and the bypass valve 8, the pressure at the outlet end of the exhaust pipe 4 can be adjusted, thereby balancing the internal air pressure of the combustion chamber 2, which is also conducive to promoting the full combustion of the exhaust gas.

[0061] The waste gas incineration device of this embodiment detects the waste gas after combustion and meets the emission standards, indicating that the waste gas has been fully burned. At the same time, after the transformation of the company's original 5# kiln, the power consumption has dropped from the original 5-6KW per hour to the current 1.8-2.6kw per hour, which greatly saves energy consumption.

[0062] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A waste gas incineration device, comprising a furnace body (1) and a combustion chamber (2) arranged in the furnace body (1), characterized in that: A curved combustion channel is provided in the combustion chamber (2), the air inlet (21) of the combustion channel is connected to an air inlet pipe (3), and the air outlet (22) is connected to an air outlet pipe (4); and a plurality of heating sources (5) are provided in the combustion channel along the extension direction of the combustion channel.

2. The waste gas incineration device according to claim 1, characterized in that: At least one partition plate (6) is arranged in the combustion chamber (2), and the partition plate (6) divides the combustion chamber (2) into a plurality of branch channels, and the plurality of branch channels are connected in sequence to form the combustion channel.

3. A waste gas incineration device according to claim 2, characterized in that: The number of the partitions (6) is an odd number, two adjacent partitions (6) are parallel and staggered, and two isolated partitions (6) are parallel and aligned; wherein the flow opening between the two branch channels formed by the partition (6) near the air inlet (21) is away from the air inlet (21).

4. A waste gas incineration device according to claim 3, characterized in that: The partitions (6) are distributed up and down.

5. The waste gas incineration device according to claim 2, characterized in that: One partition plate (6) is provided, and a gap is left between the end of the partition plate (6) away from the air inlet (21) and the inner wall of the combustion chamber (2).

6. A waste gas incineration device according to any one of claims 1 to 5, characterized in that: The air inlet (21) and the air outlet (22) are located on the same side of the furnace body (1).

7. The waste gas incineration device according to claim 6, characterized in that: At least a portion of the air outlet pipe (4) is sleeved on the air inlet pipe (3).

8. A waste gas incineration device according to any one of claims 1 to 5, characterized in that: The air outlet end of the air outlet pipe (4) is connected to a fan (7), and a bypass valve (8) is provided on the air outlet pipe (4) near the fan (7).

9. The waste gas incineration device according to claim 8, characterized in that: The furnace body (1) comprises a shell (11) and a cover body (12) arranged on the shell (11), wherein the outer edge of the cover body (12) is bent downward to form a bent portion (13), and the inner peripheral wall of the shell (11) is formed with a groove (14) for the bent portion (13) to be inserted.

10. A waste gas incineration device according to any one of claims 2 to 5, characterized in that: The heating source (5) is an electric heating rod; the partition (6) is made of silicon carbide; a plurality of temperature sensors are arranged in the combustion chamber (2), one of which is arranged near the air outlet (22).

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