Flow guiding devices, gas mixing equipment and gas treatment systems

Abstract

The present invention discloses a flow guide device, a gas mixing device and a gas processing system, wherein the flow guide device comprises a plurality of flow guide structures arranged side by side, wherein the flow guide structure comprises a first flow guide member and two second flow guide members symmetrically arranged on both sides of the first flow guide member, and a gap for fluid circulation is formed between the first flow guide member and the second flow guide member; wherein the first flow guide member comprises a first bending portion, the second flow guide member comprises a second bending portion, and the opening of the first bending portion is arranged toward the opening of the second bending portion. In the present application, the flow guide device divides, guides and merges the fluid through the first flow guide member and the second flow guide member, so that the fluid collides and disturbs during the movement, thereby forming a turbulent effect, and finally making the gas flowing through the flow guide device more uniform and stable.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas denitration, and in particular to a flow guiding device, a gas mixing device and a gas processing system. Background Art

[0002] In recent years, facing the increasingly severe environmental situation, my country has increased its NO emissions from flue gas in non-electric industries such as steel, cement, and glass. x The current mainstream technology is to use a combination of low-nitrogen combustion and SCR (Selective Catalytic Reduction) to achieve NO x Ultra-low emissions require improving SCR denitrification efficiency.

[0003] In the existing technology, the NH3 / NO ratio is improved by optimizing the flue gas flow field and the design of the ammonia nozzle. x The method of mixing uniformity is considered to be the most economical and feasible method. The ways to uniformly mix flue gas and ammonia generally include increasing the density of the injection points of the ammonia injection grid, adjusting the position and size of the openings, using a spray gun with adjustable flow, and setting a static mixer in the flue.

[0004] Existing static mixers mainly include blade mixers, baffle mixers (including disc and triangle), corrugated plate mixers, etc. Although these mixers can generate different degrees of turbulence or eddy currents in different directions to enhance smoke mixing and achieve the expected uniformity of smoke distribution, they still have the following problems:

[0005] (1) The flue cross section cannot be fully covered, there is a mixing blind area, and the overall mixing performance is weak;

[0006] (2) The structure exists independently and is not firmly fixed. During long-term operation, the turbulence device is prone to deformation and tilt, and it is difficult to ensure the uniformity of mixing ammonia and flue gas. Summary of the invention

[0007] The object of the present invention is to provide a flow guiding device, a gas mixing device and a gas processing system to solve the problem of uneven distribution of the flue gas flow field in the inlet flue of SCR denitration.

[0008] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] The present invention provides a flow guide device, comprising a plurality of flow guide structures arranged side by side, wherein the flow guide structure has a first flow guide member and two second flow guide members symmetrically arranged on both sides of the first flow guide member, and a gap for fluid circulation is formed between the first flow guide member and the second flow guide member; wherein the first flow guide member has a first bending portion, the second flow guide member has a second bending portion, and the opening of the first bending portion is arranged toward the opening of the second bending portion.

[0010] Preferably, the bottom end of the second guide member and the first bending portion are located on the same horizontal line.

[0011] Preferably, the first guide member has a first folding plate and a second folding plate arranged at a first angle, and the connecting position of the first folding plate and the second folding plate forms the first bending portion; the second guide member has a first guide plate and a second guide plate arranged at a second angle, and the connecting position of the first guide plate and the second guide plate forms the second bending portion, the gap is formed between the second guide plate and the first guide member, and the free end of the first guide plate is located on the same horizontal line as the first bending portion.

[0012] Preferably, the first angle is between 60° and 75°, and the second angle is between 55° and 75°.

[0013] Preferably, the ratio of the width of the first guide plate to the width of the second guide plate is 2.3-3.1.

[0014] Preferably, the ratio of the width of the first guide plate to the width of the first folding plate is 0.7-1.

[0015] Preferably, two adjacent flow guide structures are connected via free ends of first flow guide plates of each flow guide structure, and a third angle is formed at the connecting positions of two first flow guide plates of two adjacent flow guide structures.

[0016] Preferably, the third angle is between 25° and 35°.

[0017] Preferably, at least one support member is provided between two adjacent guide structures.

[0018] Preferably, the first bending portion is a curved surface; and / or the second bending portion is a curved surface.

[0019] Preferably, the first bending portion is a bending edge; and / or the second bending portion is a bending edge.

[0020] The present invention also provides a gas mixing device, comprising: the above-mentioned flow guiding device; and a gas conveying mechanism, having a plurality of gas injection parts arranged at intervals; wherein the flow guiding device is arranged on the same side of the plurality of gas injection parts, and the gas injection part is arranged opposite to the first bending part.

[0021] Preferably, the distance between the flow guiding device and the gas conveying mechanism is 300 mm to 500 mm.

[0022] The present invention also provides a gas processing system, comprising: a gas channel; the above-mentioned gas mixing device, wherein the gas mixing device is arranged in the gas channel; wherein, after the first gas enters the gas channel, it can be evenly mixed with the second gas ejected from the multiple gas injection parts through the guide device.

[0023] The characteristics and advantages of the present invention are:

[0024] 1. The flow guide device divides, guides and merges the fluid through the first flow guide member and the second flow guide member, so that the fluid collides and disturbs during the movement, thereby forming a turbulent effect, and finally making the gas flowing through the flow guide device more uniform and stable.

[0025] 2. The gas mixing device has a simple structure and is provided with a guide device arranged along the gas injection direction. The guide device is easy to install and efficient. In addition, by uniquely designing the structures of the first guide member and the second guide member in the gas mixing device, the gas ejected from multiple gas injection parts is divided by the guide device, thereby forming multiple airflows in the process of gas rising, and forming disturbances in the process of mutual collision, further forming a strong turbulent effect, and greatly enhancing the effect of uniform mixing between the gases.

[0026] 3. The gas treatment system module has high integration and is easy to assemble and maintain. By setting a gas mixing device in the flue, the flue gas in the SCR flue gas treatment device and the ammonia injected by the gas injection part are evenly mixed, which further improves the effect of subsequent gas treatment; at the same time, it reduces the outlet NO x The concentration and escape amount of ammonia can be reduced to achieve the purpose of protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a structural diagram of the flow guiding device of the present invention;

[0029] Figure 2 is a structural diagram of the flow guide structure of the present invention;

[0030] Figure 3 is a structural diagram of the second flow guide member of the present invention;

[0031] Figure 4 is a structural diagram of the first flow guide member of the present invention;

[0032] Figure 5 is a structural diagram of another embodiment of the second flow guide member of the present invention;

[0033] Figure 6 is a structural diagram of another embodiment of the first flow guide member of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a gas mixing device of the present invention;

[0035] Figure 8 The figure is a schematic diagram of the structure of a gas processing system of the present invention.

[0036] Description of reference numerals:

[0037] 1. flow guide device; 10. flow guide structure; 11. first flow guide member; 111. first bending portion; 112. first folding plate; 113. second folding plate; 12. second flow guide member; 121. second bending portion; 122. first flow guide plate; 1221. free end of first flow guide plate; 123. second flow guide plate; 13. gap; 14. support member; 2. gas mixing device; 21. gas delivery mechanism; 211. gas injection unit ; 3. Gas handling system; 31. Gas channel; α1. First angle; α2. Second angle; α3. Third angle; L1. Long side of the first guide plate; L2. Long side of the second guide plate; L3. Long side of the first folding plate; L4. Long side of the second folding plate; B1. Short side of the first guide plate; B2. Short side of the second guide plate; B3. Short side of the first folding plate; B4. Short side of the second folding plate; b1. Width of the first guide plate; b2. Width of the second guide plate; b3. Width of the first folding plate; b4. Width of the second folding plate; L. Distance between the guide device and the gas delivery mechanism; F. Fluid flow direction. DETAILED DESCRIPTION

[0038] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Implementation Method 1

[0040] The present invention provides a flow guiding device 1, see Figures 1 to 6 The flow guide device 1 includes a plurality of flow guide structures 10 arranged side by side, the flow guide structure 10 includes a first flow guide member 11 and two second flow guide members 12 symmetrically arranged on both sides of the first flow guide member 11, and a gap 13 for fluid circulation is formed between the first flow guide member 11 and the second flow guide member 12; wherein the first flow guide member 11 has a first bending portion 111, the second flow guide member 12 has a second bending portion 121, and the opening of the first bending portion 111 is arranged toward the opening of the second bending portion 121.

[0041] The flow guide device 1 divides, guides and merges the fluid through the first flow guide member 11 and the second flow guide member 12, so that the fluid collides and is disturbed during the movement, thereby forming a turbulent effect, and finally making the gas flowing through the flow guide device 1 more uniform and stable.

[0042] Those skilled in the art should understand that the shape and size of the gap 13 (i.e., the shape and size of the fluid channel) can be changed and adjusted by making the opening of the first bend portion 111 face the opening of the second bend portion 121, thereby disturbing the gas passing through the first guide plate 122 and the second guide plate 123, thereby generating a turbulent effect, and ultimately making the gas flowing through the guide device 1 more uniform and stable.

[0043] In some embodiments, see Figure 1 and Figure 7 , the bottom end of the second guide member 12 and the first bend 111 are located on the same horizontal line. The bottom end of the second guide member 12 refers to the end of the second guide member 12 that is far away from the second bend 121. That is, the distances between the two ends of the second guide member 12 and the second bend 121 are B1 and B2, respectively, where B1 is greater than B2, and the end of the second guide member 12 that is far away from the second bend 121 refers to the end of the second guide member 12 that is at a distance of B1 from the second bend 121. For details, please refer to Figure 3 and Figure 5 .

[0044] The present invention sets the bottom end of the second flow guide 12 and the first bending portion 111 on the same horizontal line, which can ensure that the gap 13 formed between the first flow guide 11 and the second flow guide 12 is symmetrical and a large amount of fluid can easily enter the gap 13. The fluid is divided into two paths by the first bending portion 111, and the two paths of fluid respectively enter the corresponding gaps 13 on both sides of the first flow guide 11 and are guided to flow.

[0045] Specifically, in one implementation, see Figure 2 and Figure 6As shown, the first guide member 11 has a first folded plate 112 and a second folded plate 113 arranged at a first angle α1, and the connection position between the first folded plate 112 and the second folded plate 113 forms a first bent portion 111; Figure 5 As shown, the second guide member 12 has a first guide plate 122 and a second guide plate 123 which are arranged at a second angle α2, the connection position of the first guide plate 122 and the second guide plate 123 forms a second bent portion 121, a gap 13 is formed between the second guide plate 123 and the first guide member 11, and the free end of the first guide plate 122 and the first bent portion 111 are located on the same horizontal line (that is, the distance B1 between the free end of the first guide plate 122 and the second bent portion 121 is greater than the distance B2 between the free end of the second guide plate 123 and the second bent portion 121).

[0046] It should be understood by those skilled in the art that the first folding plate 112 and the second folding plate 113 have the same size. Figure 3 and Figure 4 The first folding plate 112 and the second folding plate 113 are integrally formed. In other embodiments, the first guide plate 122 and the second guide plate 123 are integrally formed. The present invention adopts such an integrally formed structure, which makes subsequent installation more convenient, saves installation time, and improves installation efficiency; it is also convenient for overall transportation or replacement, which is beneficial for later maintenance.

[0047] In some embodiments, see Figures 3 to 7 The angle of the first angle α1 is 60°~75°; the angle of the second angle α2 is 55°~75°.

[0048] Those skilled in the art should understand that the bending angle of the first bending portion 111 and the bending angle of the second bending portion 121 can be designed to cooperate with each other to ensure that the shape and size of the gap 13 (i.e., the fluid channel) can be adjusted and changed, so as to work with the flow rate and flow rate of the fluid to meet the actual use requirements, and further achieve the best mixing effect of the fluid. Of course, those skilled in the art should also understand that the bending angle in this embodiment is designed and selected according to the specific working environment in order to achieve the best diversion effect.

[0049] In one embodiment, if Figure 3 and Figure 5 As shown, the first guide plate 122 has a long side L1 and a short side B1, and the second guide plate 123 has a long side L2 and a short side B2. Figure 4 and Figure 6 As shown, the first folding plate 112 has a long side L3 and a short side B3, and the second folding plate 113 has a long side L4 and a short side B4.

[0050] Specifically, in some embodiments, see Figure 3 and Figure 5 , the ratio of the width b1 of the first guide plate 122 to the width b2 of the second guide plate 123 is 2.3 to 3.1, that is, the ratio of the length of the short side B1 of the first guide plate 122 to the length of the short side B2 of the second guide plate 123 is 2.3 to 3.1. In other embodiments, see Figures 3 to 6 The ratio of the width b1 of the first guide plate 122 to the width b3 of the first folded plate 112 is 0.7-1, that is, the ratio of the length of the short side B1 of the first guide plate 122 to the length of the short side B3 of the first folded plate 112 is 0.7-1.

[0051] Those skilled in the art should understand that in order to achieve the best guide effect, there is a certain proportional relationship between the width of the first guide plate 122 and the width of the second guide plate 123, and between the width of the second guide plate 123 and the width of the first folding plate 112, and this proportional relationship can be designed and selected according to the specific working conditions.

[0052] In some embodiments, see Figure 1 and Figure 7 The adjacent flow guide structures 10 are connected to each other through the free ends 1221 of the first flow guide plates 122 of each flow guide structure 10 , and a third angle α3 is formed at the connecting positions of the two first flow guide plates 122 of the two adjacent flow guide structures 10 .

[0053] The present invention forms a third angle α3 at the connecting position of the two first guide plates 122 of the two adjacent guide structures 10, so that when the fluid flows through the guide device 1 from the bottom of the guide device 1 along the fluid flow direction F, the two first guide plates 122 forming the third angle α3 can cut the fluid into two paths and evenly introduce the fluid into the gap 13, further facilitating the subsequent guidance and uniform mixing of the gas. In some embodiments, specifically, the third angle α3 is 25° to 35°.

[0054] In some embodiments, see Figure 1 and Figure 7 The flow guide device 1 further includes: at least one support member 14, which is sandwiched between two adjacent flow guide structures 10. In some embodiments, the support member 14 is a metal cylinder, and in other embodiments, the support member 14 is a long triangular prism, and the two side surfaces of the triangular prism are respectively fixed to the two first flow guide plates 122 of the two adjacent flow guide structures 10, and the angle between the two side surfaces of the triangular prism is equal to the third angle α3, that is, the triangular prism can just be accommodated in the angle space formed by the two first flow guide plates 122, thereby achieving the purpose of stable connection.

[0055] In this embodiment, the support member 14 is sandwiched between two adjacent guide structures 10, that is, the support member 14 is sandwiched between the outer surfaces of the two first guide plates 122 of the two adjacent guide structures 10. In some embodiments, the support member 14 is welded and fixed to the outer surface of the first guide plate 122 of the second guide member 12 of the guide structure 10, thereby ensuring a firm connection and preventing the second guide member 12 from falling off, further ensuring the normal realization of the product function.

[0056] In some embodiments, the guide device 1 cannot be installed with an integer number of guide structures 10 due to the limitation of the installation space. Therefore, only part of the guide structures 10 can be installed on the wall surface with limited installation space (in some embodiments, such as Figure 7 As shown, only the second guide member 12 is installed on the wall surface with limited installation space). Preferably, a support member 14 is sandwiched between the outer surface of the first guide plate 122 of the second guide member 12 and the wall surface with limited installation space. Of course, those skilled in the art can also design and use guide structures 10 of different sizes according to actual installation environment conditions, so that an integer number of guide structures 10 can be installed in the installation space.

[0057] In one embodiment of the present invention, see Figure 4 , the first bending portion 111 is a curved surface; see Figure 3 , the second bending portion 121 is an arc surface. Among them, the first bending portion 111 adopts an arc surface structure, which can ensure that the first folding plate 112 and the second folding plate 113 are subjected to uniform force at their connection positions, making the force transmission more stable and safe, avoiding damage to parts due to stress concentration, thereby increasing the service life of the product and reducing the subsequent maintenance costs. In addition, the second bending portion 121 adopts an arc surface structure, which can also ensure that the first guide plate 122 and the second guide plate 123 are subjected to uniform force at their connection positions, making the force transmission more stable and safe, avoiding damage to parts due to stress concentration, thereby increasing the service life of the product and reducing the subsequent maintenance costs.

[0058] In one embodiment, see Figure 6 , the first bending portion 111 is a bending edge; see Figure 5 The first bending portion 111 and / or the second bending portion 121 of the present invention adopts the structure of the bending edge, which can reduce the processing conditions of the first guide member 11 and / or the second guide member 12, facilitate processing, and thus improve production efficiency.

[0059] Those skilled in the art should understand that the structure of the first bending portion 111 and / or the second bending portion 121 using the arc surface can be directly processed on the plate using a processing technology, or multiple plates can be welded together using the arc surface plate; and the structure of the first bending portion 111 and / or the second bending portion 121 using the bending edge can be directly bending the plate to form the bending edge at the bending position, or directly welding two plates to form the bending edge at the welding position. Of course, other forms can also be used to process the required first bending portion 111 and / or second bending portion 121, which will not be repeated here.

[0060] Implementation Method 2

[0061] like Figures 1 to 7 As shown, the present invention provides a gas mixing device 2, including a flow guide device 1 and a gas delivery mechanism 21, wherein the gas delivery mechanism 21 has a plurality of gas injection portions 211 arranged at intervals. The flow guide device 1 is arranged on the same side of the plurality of gas injection portions 211, and the gas injection portion 211 is arranged opposite to the first bending portion 111. The specific structure, working principle and beneficial effects of the flow guide device 1 in this embodiment are the same as those in the first embodiment, and will not be repeated here.

[0062] The gas mixing device 2 provided by the present invention arranges the gas injection portion 211 and the first bending portion 111 relative to each other, and then uses the gas injection portion 211 to spray gas onto the first guide member 11 of the guide structure 10 in the guide device 1, so that the first bending portion 111 is used to divide and guide the injected gas, thereby ensuring uniform gas flow direction, making the subsequent gas mixing effect more uniform and stable; at the same time, it ensures that the gas flow in each gap 13 is sufficient, thereby meeting the gas flow requirements of the subsequent mixing effect.

[0063] Those skilled in the art should understand that as long as the gas ejected by the gas ejection portion 211 can be divided and guided by the first bending portion 111, it should be within the protection scope of the present invention, regardless of whether the ejected gas is evenly cut and guided.

[0064] In some embodiments, see Figure 7 , the distance L between the flow guiding device 1 and the gas conveying mechanism 21 is 300 mm to 500 mm.

[0065] Those skilled in the art should understand that the distance L between the flow guide device 1 and the gas delivery mechanism 21 is adjusted and selected according to the actual use environment, and as long as the distance L is adjusted and selected to achieve an ideal mixing effect, it should be within the protection scope of the present invention. In addition, the injection speed and injection amount of the gas injection part 211 are also factors that affect the final mixing effect. Therefore, the distance L can also be adjusted to other values ​​according to the specific parameters of the gas injection part 211 used in actual work.

[0066] The gas mixing device 2 provided by the present invention has a simple structure, and its overall structure is composed of a guide device 1 and a gas conveying mechanism 21. The guide structure 10 in the guide device 1 can be mass-produced, and the installation is simple and efficient. During construction, it is only necessary to connect and combine the guide structure 10 in an orderly manner, thereby avoiding the adverse effects caused by non-standard construction. In addition, the present invention uniquely designs the structure of the first guide member 11 and the second guide member 12 in the gas mixing device 2, so that the ammonia gas ejected from the multiple gas injection parts 211 is divided and guided by the guide device 1, thereby forming multiple airflows in the rising process, and forming disturbances in the process of mutual collision, further forming a strong turbulent effect, and greatly enhancing the effect of uniform mixing between the gases.

[0067] Implementation Method 3

[0068] like Figures 1 to 8 As shown, the present invention provides a gas processing system 3.

[0069] Specifically, the gas processing system 3 includes a gas channel 31 and a gas mixing device 2, wherein the gas mixing device 2 is disposed in the gas channel 31; wherein, after the first gas enters the gas channel 31 along the fluid flow direction F, it can be uniformly mixed with the second gas ejected from the plurality of gas ejection parts 211 through the flow guide device 1. The specific structure, working principle and beneficial effects of the gas mixing device 2 in this embodiment are the same as those in the second embodiment, and will not be described in detail herein.

[0070] In a specific application environment, the gas channel 31 is a flue, the gas delivery mechanism 21 is an ammonia pipeline, the gas injection portion 211 is a nozzle, the first gas is flue gas, and the second gas is ammonia. The working principle and working process of the gas treatment system 3 in this specific embodiment are described as follows:

[0071] 1. Arrange the ammonia pipeline on the cross section of the vertically arranged flue, arrange multiple nozzles on the ammonia pipeline at equal intervals, and arrange the guide device 1 above the ammonia pipeline so that each nozzle is arranged opposite to the first bending portion 111 of the first guide plate 122 of each guide structure 10 of the guide device 1.

[0072] 2. During the SCR denitration reaction, the flue gas enters the vertical flue from bottom to top along the first gas flow direction (i.e., the fluid flow direction F), and the ammonia gas is ejected upward from multiple nozzles and mixed with the flue gas in the flue. At this time, the flow rates of the flue gas and the ammonia gas are non-uniformly distributed. When passing through the guide device 1, the first bending portion 111 of the first guide member 11 divides and guides the gas, and the divided gas enters the two gaps 13 (i.e., two fluid channels) formed between the first guide member 11 and the two second guide members 12, and passes through the second guide member 12. The first guide plate 122 and the second guide plate 123 of the component 12 guide and adjust the flow direction of the gas, thereby changing the flow direction and flow velocity of the gas; since there is a second angle α2 between the first guide plate 122 and the second guide plate 123, the flow direction of the flue gas formed by the first guide plate 122 and the second guide plate 123 is changed, so that multiple airflows in different directions converge, forming disturbances in the process of mutual collision, thereby forming a strong turbulent effect, and then fully disrupting the flue gas distribution, thereby improving the mixing uniformity of ammonia and flue gas.

[0073] The present invention is not limited to the aforementioned specific implementation modes, and any substantial improvements made without departing from the spirit of the present invention are within the scope of protection of the claims.

[0074] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A gas mixing device, characterized in that: include: A flow guide device, comprising a plurality of flow guide structures arranged side by side, wherein the flow guide structure comprises a first flow guide member and two second flow guide members symmetrically arranged on both sides of the first flow guide member, and a gap for fluid flow is formed between the first flow guide member and the second flow guide member; wherein the first flow guide member comprises a first bending portion, the second flow guide member comprises a second bending portion, and an opening of the first bending portion is arranged toward an opening of the second bending portion; and A gas delivery mechanism having a plurality of gas injection portions arranged at intervals; Wherein, the flow guide device is arranged on the same side of the plurality of gas injection portions, and the gas injection portion is arranged opposite to the first bending portion; The second flow guide member comprises a first flow guide plate and a second flow guide plate arranged at a second angle, the connection position of the first flow guide plate and the second flow guide plate forms the second bent portion, the gap is formed between the second flow guide plate and the first flow guide member, and the free end of the first flow guide plate and the first bent portion are located on the same horizontal line; the two adjacent flow guide structures are connected through the free ends of the first flow guide plates of the two adjacent flow guide structures, and a third angle is formed at the connection position of the two first flow guide plates of the two adjacent flow guide structures; The gas mixing device further comprises at least one supporting member, and the supporting member is sandwiched between two adjacent flow-guiding structures.

2. The gas mixing device according to claim 1, characterized in that: The first flow guide member comprises a first folding plate and a second folding plate which are arranged at a first angle, and the connection position between the first folding plate and the second folding plate forms the first bending portion.

3. The gas mixing device according to claim 2, characterized in that: The angle of the first angle is 60° to 75°; The second angle is 55° to 75°.

4. The gas mixing device according to claim 1, characterized in that: The ratio of the width of the first guide plate to the width of the second guide plate is 2.3 to 3.

1.

5. The gas mixing device according to claim 2, characterized in that: The ratio of the width of the first guide plate to the width of the first folding plate is 0.7-1.

6. The gas mixing device according to claim 1, characterized in that: The third angle is in the range of 25° to 35°.

7. The gas mixing device according to any one of claims 1 to 6, characterized in that The first bending portion is a curved surface; and / or The second bending portion is a curved surface.

8. The gas mixing device according to any one of claims 1 to 6, characterized in that The first bending portion is a bending edge; and / or The second bending portion is a bending edge.

9. The gas mixing device according to claim 1, characterized in that: The distance between the flow guiding device and the gas conveying mechanism is 300 mm to 500 mm.

10. A gas processing system, characterized in that: include: Gas channels; The gas mixing device according to any one of claims 1 to 9, wherein the gas mixing device is arranged in the gas channel; Wherein, after the first gas enters the gas channel, it can be evenly mixed with the second gas ejected from the plurality of gas ejecting parts through the flow guiding device.

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