Waste gas concentration combustion treatment device

Abstract

The utility model relates to the field of waste gas treatment devices, in particular to a waste gas concentration combustion treatment device which comprises a combustion chamber and a preheating chamber, a combustor is arranged in the combustion chamber, a first gas pipe is arranged on the side portion of the combustion chamber, a preheating pipe is arranged in the preheating chamber, one end of the preheating pipe is connected with the first gas pipe, and the other end of the preheating pipe extends out of the preheating chamber to be connected with a waste gas pipe. An oxygen pipe is arranged on the outer side of the waste gas pipe and communicated with the waste gas pipe, uniform mixing devices are arranged in the waste gas pipe and located between the oxygen pipe and the preheating pipe, each uniform mixing device comprises a conical cover and flow deflectors, the conical tip of the conical cover faces the preheating pipe, the conical disc of the conical cover faces the oxygen pipe, and the flow deflectors are spirally arranged around the axis of the conical cover. The catalytic oxygen is input into the waste gas pipe, so that the oxygen and the waste gas can be fully mixed in the waste gas pipe and then input into the combustion chamber for combustion reaction.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment devices, in particular to a waste gas concentration combustion treatment device. Background Art

[0002] A Chinese patent with the announcement number CN220489178U discloses a catalytic combustion waste gas treatment device, which improves the effect of preheating the waste gas, reduces the energy consumption of the waste gas heating catalytic treatment, and improves the work efficiency; it includes a catalytic box and a burner, the burner is installed on the outer wall of the catalytic box, and the burner output end is connected to the inside of the catalytic box; it also includes a heat exchange device, a filter device, a catalytic bed, a first air pipe and a second air pipe, the catalytic bed is installed in the middle of the inner wall of the catalytic box, the first air pipe output end is connected to the catalytic box on the right side of the catalytic bed, the second air pipe input end is connected to the catalytic box on the left side of the catalytic bed, the second air pipe output end is connected to the heat exchange device, the heat exchange device is used to preheat the waste gas by preheating, the filter device is connected to the heat exchange device, and the filter device is used to pre-filter the waste gas. The patent melts the combustible and harmful parts in the waste gas through thermal oxidation and converts them into harmless substances. However, in the patent, only combustion-supporting oxygen is added to the inner side of the combustion chamber, which will cause the harmful combustible components inside the waste gas to be unable to be completely burned out when the waste gas is output quickly.

[0003] Based on this, the utility model designs a waste gas concentration combustion treatment device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a waste gas concentration combustion treatment device to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste gas concentrated combustion treatment device, comprising a combustion chamber and a preheating chamber, a burner is arranged in the combustion chamber, a first air pipe is arranged on the side of the combustion chamber, a preheating pipe is arranged in the preheating chamber, one end of the preheating pipe is connected to the first air pipe, the other end of the preheating pipe extends out of the preheating chamber and is connected to the waste gas pipe, an oxygen pipe is arranged on the outside of the waste gas pipe, the oxygen pipe and the waste gas pipe are connected to each other, a mixing device is arranged in the waste gas pipe, multiple groups of the mixing devices are located between the oxygen pipe and the preheating pipe, the mixing device comprises a cone cover and a guide vane, the cone tip of the cone cover faces the direction of the preheating pipe, the cone disk of the cone cover faces the direction of the oxygen pipe, and multiple groups of the guide vanes are spirally arranged around the axis of the cone cover.

[0006] Preferably, the oxygen pipe extends into the exhaust pipe and is arranged to be inclined toward the preheating pipe.

[0007] Preferably, a plurality of groups of oxygen pipes are connected to the exhaust pipe, and the plurality of groups of oxygen pipes are arranged in an equidistant ring around the axis of the exhaust pipe.

[0008] Preferably, a hot air pipe is provided at the bottom of the preheating chamber, a plurality of groups of air guide plates are provided in the preheating chamber, the preheating pipe is arranged in a folded shape, and the plurality of groups of air guide plates are respectively matched with the plurality of groups of adjacent folded sections of the preheating pipe.

[0009] Preferably, one end of the air guide plate close to the inner wall of the preheating chamber is hingedly connected to the preheating chamber, and the other end of the air guide plate is hingedly provided with a first telescopic component, and the first telescopic component is rotatably connected to the inner wall of the preheating chamber.

[0010] Preferably, one end of the preheating pipe close to the bottom of the preheating chamber is connected to the first air pipe, and the other end of the preheating pipe is connected to the exhaust gas pipe.

[0011] Compared with the prior art, the utility model has the beneficial effect that: the utility model inputs catalytic oxygen into the exhaust pipe, so that oxygen and exhaust gas can be fully mixed in the exhaust pipe and then input into the combustion chamber for combustion reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the exhaust pipe structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the preheating chamber of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1-combustion chamber, 11-burner, 12-first air pipe, 2-preheating chamber, 21-preheating pipe, 22-hot air pipe, 23-air guide plate, 24-first telescopic assembly, 3-exhaust pipe, 31-oxygen pipe, 4-mixing device, 41-cone cover, 42-guide vane. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Combination Figure 1-3 :

[0020] A waste gas concentration combustion treatment device comprises a combustion chamber 1 and a preheating chamber 2. A burner 11 is arranged in the combustion chamber 1. A first air pipe 12 is arranged on the side of the combustion chamber 1. A preheating pipe 21 is arranged in the preheating chamber 2. One end of the preheating pipe 21 is connected to the first air pipe 12. The other end of the preheating pipe 21 extends out of the preheating chamber 2 and is connected to a waste gas pipe 3. An oxygen pipe 31 is arranged on the outside of the waste gas pipe 3. The oxygen pipe 31 and the waste gas pipe 3 are interconnected. A mixing device 4 is arranged in the waste gas pipe 3. Multiple groups of mixing devices 4 are located between the oxygen pipe 31 and the preheating pipe 21. The mixing device 4 comprises a cone cover 41 and guide vanes 42. The cone tip of the cone cover 41 faces the direction of the preheating pipe 21, and the cone disk of the cone cover 41 faces the direction of the oxygen pipe 31. Multiple groups of guide vanes 42 are spirally arranged around the axis of the cone cover 41.

[0021] Furthermore, the oxygen pipe 31 extends into the exhaust pipe 3 and is arranged to be inclined toward the preheating pipe 21 .

[0022] Furthermore, a plurality of oxygen pipes 31 are connected to the exhaust pipe 3 , and the plurality of oxygen pipes 31 are arranged in an equidistant ring around the axis of the exhaust pipe 3 .

[0023] Furthermore, a hot air pipe 22 is provided at the bottom of the preheating chamber 2, and multiple groups of air guide plates 23 are provided in the preheating chamber 2. The preheating tube 21 is arranged in a folded shape, and the multiple groups of air guide plates 23 are matched with multiple groups of adjacent folded sections of the preheating tube 21 respectively.

[0024] Furthermore, one end of the air guide plate 23 close to the inner wall of the preheating chamber 2 is hingedly connected to the preheating chamber 2, and the other end of the air guide plate 23 is hingedly provided with a first telescopic component 24, and the first telescopic component 24 is rotatably connected to the inner wall of the preheating chamber 2.

[0025] Furthermore, one end of the preheating pipe 21 close to the bottom of the preheating chamber 2 is connected to the first air pipe 12 , and the other end of the preheating pipe 21 is connected to the exhaust pipe 3 .

[0026] Specific application examples of the utility model:

[0027] The exhaust pipe 3, the preheating pipe 21 and the first air pipe 12 are connected in sequence, and the exhaust gas is transported to the combustion chamber 1 through the preheating chamber 2, and the exhaust gas is burned by the burner 11. The oxygen pipe 31 is connected to the end of the exhaust pipe 3 away from the preheating chamber 2. The oxygen pipe 31 extends into the exhaust pipe 3 and is tilted toward the side of the preheating chamber 2, which is conducive to injecting oxygen into the exhaust pipe 3 and mixing with the exhaust gas. A mixing device 4 is provided between the exhaust pipe 3 and the connection between the oxygen pipe 31 and the preheating pipe 21. The mixing device 4 is conical and has a guide plate 42 on the inner wall. The guide plate 42 and the conical inner wall are used to generate a rotating torque when the gas flows through the mixing device 4, driving the gas to mix. The hot air pipe 22 arranged at the bottom of the preheating chamber 2 continuously transports hot air toward the preheating chamber 2 to heat the gas passing through the preheating pipe 21 of the preheating chamber 2. The preheating pipe 21 is folded in the preheating chamber 2 to extend the distance of the gas passing through the preheating chamber 2, which is conducive to sufficient heating. The air guide plates 23 are staggered in the preheating chamber 2, and the air guide plates 23 are used to limit the flow path of the hot air in the preheating chamber 2, increase the residence time of the hot air in the preheating chamber 2, and facilitate full heat conduction. The first telescopic component 24 can be made of an electric telescopic rod. The first telescopic component 24 drives the air guide plate 23 to rotate in the preheating chamber 2, and controls the movement rate of the gas along the same air guide plate 23 by controlling the angle between the air guide plate 23 and the horizontal plane. The preheating pipe 21 is connected to the first air pipe 12 at one end close to the hot air pipe 22, which is conducive to gradually heating the preheating pipe 21.

[0028] In the description of the utility model, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 a limitation on the utility model.

[0029] In the utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A waste gas concentration combustion treatment device, comprising a combustion chamber (1) and a preheating chamber (2), characterized in that: A burner (11) is provided in the combustion chamber (1), a first air pipe (12) is provided on the side of the combustion chamber (1), a preheating pipe (21) is provided in the preheating chamber (2), one end of the preheating pipe (21) is connected to the first air pipe (12), the other end of the preheating pipe (21) extends out of the preheating chamber (2) and is connected to an exhaust pipe (3), an oxygen pipe (31) is provided on the outside of the exhaust pipe (3), and the oxygen pipe (31) and the exhaust pipe (3) are connected to each other. A mixing device (4) is provided in the exhaust gas pipe (3), and a plurality of groups of the mixing devices (4) are located between the oxygen pipe (31) and the preheating pipe (21). The mixing device (4) comprises a cone cover (41) and guide vanes (42). The cone tip of the cone cover (41) faces the preheating pipe (21), and the cone disk of the cone cover (41) faces the oxygen pipe (31). The plurality of groups of the guide vanes (42) are arranged in a spiral shape around the axis of the cone cover (41).

2. The exhaust gas concentration combustion treatment device according to claim 1 is characterized in that: The oxygen pipe (31) extends into the exhaust pipe (3) and is arranged such that the oxygen pipe (31) is inclined toward the preheating pipe (21).

3. The exhaust gas concentration combustion treatment device according to claim 2 is characterized in that: A plurality of groups of oxygen pipes (31) are connected to the exhaust pipe (3), and the plurality of groups of oxygen pipes (31) are arranged in an equidistant ring around the axis of the exhaust pipe (3).

4. The exhaust gas concentration combustion treatment device according to claim 1 is characterized in that: A hot air pipe (22) is provided at the bottom of the preheating chamber (2), a plurality of groups of air guide plates (23) are provided in the preheating chamber (2), the preheating tube (21) is arranged in a folded shape, and the plurality of groups of air guide plates (23) are respectively matched with the plurality of groups of adjacent folded sections of the preheating tube (21).

5. The exhaust gas concentration combustion treatment device according to claim 4 is characterized in that: One end of the air guide plate (23) close to the inner wall of the preheating chamber (2) is hingedly connected to the preheating chamber (2), and the other end of the air guide plate (23) is hingedly provided with a first telescopic component (24), and the first telescopic component (24) is rotatably connected to the inner wall of the preheating chamber (2).

6. The exhaust gas concentration combustion treatment device according to claim 5 is characterized in that: One end of the preheating pipe (21) close to the bottom of the preheating chamber (2) is connected to the first air pipe (12), and the other end of the preheating pipe (21) is connected to the exhaust pipe (3).

Images