Gas mixer and combustion water washing scrubber

Abstract

The utility model relates to the technical field of scrubbers, and discloses a gas mixer and a combustion washing scrubber, the gas mixer comprises a main body pipe and an internal pipe, the main body pipe is provided with a cavity, two ends of the cavity in the axial direction of the main body pipe are communicated, and a first gas inlet and a second gas inlet which are communicated with the cavity are arranged on the peripheral surface of the main body pipe. The inner pipe can be inserted into the cavity, the first end of the inner pipe is located outside the cavity, and the second end of the inner pipe is located in the cavity and extends to the sides, away from the first end, of the first air inlet and the second air inlet. Air can be introduced into the cavity through the inner pipe, fuel gas can be introduced into the cavity through one of the first gas inlet and the second gas inlet, nitrogen or other gas can be introduced into the cavity through the other one of the first gas inlet and the second gas inlet, and the gas entering the cavity through the first gas inlet and the second gas inlet can form streaming around the periphery of the inner pipe. Therefore, mixing with air in the cavity is accelerated, and it is guaranteed that various gases are evenly mixed or the cavity is fully purged.

Description

Technical Field

[0001] The utility model relates to the technical field of scrubbers, in particular to a gas mixer and a combustion water scrubber. Background Art

[0002] The combustion water scrubber uses a heating method to treat waste gas, that is, fuel gas burns to form a flame to heat the waste gas so as to decompose the waste gas. Before the fuel gas is burned, it needs to be mixed with air through a gas mixer first. However, limited by the structure of the combustion water scrubber, the structure of the gas mixer arranged upstream of the combustion chamber is small, which results in a short flow time of the fuel gas and air in the gas mixer, insufficient mixing, and thus affects the combustion efficiency and the waste gas treatment efficiency.

[0003] Therefore, there is an urgent need for a gas mixer and a combustion water scrubber to solve the above problems. Summary of the Utility Model

[0004] An object of the utility model is to provide a gas mixer, which can effectively improve the mixing efficiency of multiple gases in the gas mixer and improve the gas combustion efficiency.

[0005] With the above concept, the technical solution adopted by the utility model is as follows:

[0006] Provide a gas mixer, including:

[0007] A main body pipe having a cavity, the cavity is penetrated at both ends in the axial direction of the main body pipe, and a first air inlet and a second air inlet are arranged on the outer peripheral surface of the main body pipe, and both the first air inlet and the second air inlet are communicated with the cavity;

[0008] An inner pipe, partially inserted into the cavity and the axial direction of the inner pipe is parallel to the axial direction of the main body pipe, the first end of the inner pipe is located outside the cavity, and the second end of the inner pipe is located inside the cavity and extends to the side of the first air inlet and the second air inlet away from the first end.

[0009] Optionally, the main body pipe includes a connected equal-diameter section and a reduced-diameter section, and the flow area of the reduced-diameter section gradually decreases towards the side away from the equal-diameter section.

[0010] Optionally, a chamfer is arranged at the outlet end of the reduced-diameter section facing away from the equal-diameter section, and the chamfer is used to expand the flow area of the outlet end.

[0011] Optionally, the main body pipe further includes an installation section, the installation section is communicated with the outlet end, the installation section has an installation flange, and the main body pipe is connected to the cavity opening of the combustion chamber of the combustion water scrubber through the installation flange.

[0012] Optionally, the gas mixer further includes a first air inlet joint, which is disposed at the first air inlet and communicated with the cavity, and the first air inlet joint is used for connecting a first air inlet pipe.

[0013] Optionally, the axial direction of the first air inlet joint is perpendicular to the axial direction of the main pipe.

[0014] Optionally, the gas mixer further includes a second air inlet joint, which is disposed at the second air inlet and communicated with the cavity, and the second air inlet joint is used for connecting a second air inlet pipe.

[0015] Optionally, the axial direction of the second air inlet joint is perpendicular to the axial direction of the main pipe.

[0016] Optionally, the gas mixer further includes a third air inlet joint, which is connected to the first end, and the third air inlet joint is used for connecting a third air inlet pipe.

[0017] Another object of the present invention is to provide a combustion water washing scrubber, which can effectively improve the mixing efficiency of various gases in the gas mixer and improve the gas combustion efficiency.

[0018] Based on the above concept, the technical solution adopted by the present invention is as follows:

[0019] A combustion water washing scrubber is provided, including the above-mentioned gas mixer.

[0020] The beneficial effects of the present invention are as follows:

[0021] The gas mixer proposed by the present invention includes a main pipe and an inner pipe. The main pipe has a cavity, and both ends of the cavity in the axial direction of the main pipe are penetrated. A first air inlet and a second air inlet are provided on the outer peripheral surface of the main pipe, and both the first air inlet and the second air inlet are communicated with the cavity. The inner pipe is partially inserted into the cavity, and the axial direction of the inner pipe is parallel to the axial direction of the main pipe. The first end of the inner pipe is located outside the cavity, and the second end of the inner pipe is located inside the cavity and extends to the side of the first air inlet and the second air inlet away from the first end. Air can be introduced into the cavity through the inner pipe, and fuel gas can be introduced into the cavity through one of the first air inlet and the second air inlet. The fuel gas can form a circumferential flow around the outer periphery of the inner pipe when entering the cavity, which can accelerate the mixing with the gas in the cavity, thereby improving the combustion efficiency of the mixed gas after entering the combustion chamber. Nitrogen or other gases to be mixed can be introduced into the cavity through the other one of the first air inlet and the second air inlet. The gases entering the cavity through the first air inlet and the second air inlet can both form a circumferential flow around the outer periphery of the inner pipe to ensure uniform mixing of various gases or sufficient purging of the inside of the cavity.

[0022] The combustion water-washing scrubber proposed by the present utility model includes the above-mentioned gas mixer. The mixed combustible gas of the combustion water-washing scrubber is fully mixed by the gas mixer before entering the combustion chamber, which can improve the combustion efficiency of the mixed gas after entering the combustion chamber. In addition, nitrogen can also form a flow-around in the gas mixer, so as to fully purge the inside of the cavity. Description of the Drawings

[0023] Figure 1 is a partial cross-sectional view of the gas mixer provided by an embodiment of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the gas mixer provided by an embodiment of the present utility model.

[0025] In the figure:

[0026] 1, main body pipe; 11, equal-diameter section; 12, reduced-diameter section; 13, installation section; 131, chamfer; 2, internal pipe; 3, first air inlet joint; 4, second air inlet joint; 5, third air inlet joint;

[0027] 101, first air inlet; 102, second air inlet; 103, inlet; 104, outlet. Detailed Embodiment

[0028] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of description, only the parts related to the present utility model are shown in the drawings rather than all of them.

[0029] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0031] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left" and "right" are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operation, 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The technical solution of the present utility model will be further described below in conjunction with the drawings and through specific embodiments.

[0033] As Figure 1 and Figure 2 shown, this embodiment provides a gas mixer, which includes a main body pipe 1 and an inner pipe 2. The main body pipe 1 has a cavity that penetrates at both ends in the axial direction of the main body pipe 1. A first air inlet 101 and a second air inlet 102 are provided on the outer peripheral surface of the main body pipe 1, and both the first air inlet 101 and the second air inlet 102 are communicated with the cavity. The inner pipe 2 is partially inserted into the cavity, and the axial direction of the inner pipe 2 is parallel to the axial direction of the main body pipe 1. The first end of the inner pipe 2 is located outside the cavity, and the second end of the inner pipe 2 is located inside the cavity and extends to the side of the first air inlet 101 and the second air inlet 102 away from the first end. In specific implementation, air can be introduced into the cavity through the inner pipe 2, and fuel gas can be introduced into the cavity through one of the first air inlet 101 and the second air inlet 102. And the fuel gas can form a circumferential flow around the outer periphery of the inner pipe 2 when entering the cavity, so as to accelerate the mixing of the fuel gas and the air in the cavity, thereby forming a more fully mixed fuel gas, and can also further improve the combustion efficiency of the mixed fuel gas in the combustion chamber. Nitrogen or other gases to be mixed can be introduced into the cavity through the other one of the first air inlet 101 and the second air inlet 102. The gases entering the cavity through the first air inlet 101 and the second air inlet 102 can both form a circumferential flow around the outer periphery of the inner pipe 2 to ensure the uniform mixing of multiple gases or the sufficient purging of the inside of the cavity.

[0034] Optionally, the main tube 1 includes a connected equal diameter section 11 and a reduced diameter section 12. In the axial direction of the main tube 1, the flow area of the cavity of the equal diameter section 11 is consistent, while the flow area of the cavity of the reduced diameter section 12 becomes smaller as it is farther away from the equal diameter section 11, that is, the flow area of the reduced diameter section 12 gradually decreases along the flow direction of the gas, which can further increase the flow velocity of the mixed fuel gas in the reduced diameter section 12 so that the mixed fuel gas can leave the cavity faster.

[0035] Optionally, a chamfer 131 is provided at the outlet end of the reduced diameter section 12 away from the equal diameter section 11. The setting of the chamfer 131 expands the flow area of the outlet end, which can prevent the mixed fuel gas from becoming a concentrated airflow when flowing out of the cavity, that is, the chamfer 131 at the outlet end allows the mixed fuel gas to diffuse radially toward the main tube 1 when flowing out of the outlet end, so that the mixed fuel gas can fill every part of the combustion chamber.

[0036] Optionally, the main pipe 1 further includes a mounting section 13, which is connected to the outlet end and has a mounting flange, and the main pipe 1 is connected to the cavity opening of the combustion chamber of the combustion water scrubber through the mounting flange. The inner wall of the cavity at the mounting section 13 is provided with a stepped surface, and the cavity opening of the combustion chamber partially extends into the cavity and abuts against the stepped surface, so that the sealing performance of the connection between the hot combustion chamber and the gas mixer is better.

[0037] Furthermore, the gas mixer further includes a first air inlet connector 3, which is disposed at the first air inlet port 101 and communicates with the cavity, and is used to connect to a first air inlet pipe. In specific implementation, the end of the first air inlet pipe that is not connected to the first air inlet connector 3 can be connected to a fuel gas storage device, that is, the fuel gas in the fuel gas storage device can be introduced into the cavity through the first air inlet pipe, so that the fuel gas is mixed with air in the cavity.

[0038] In this embodiment, the first air inlet connector 3 is disposed on the outer peripheral surface of the main tube 1, and the axial direction of the first air inlet connector 3 is perpendicular to the axial direction of the main tube 1. In other embodiments, the axial direction of the first air inlet connector 3 and the axial direction of the main tube 1 may be disposed at a first angle according to the installation position of the gas mixer, and the first angle may be an acute angle or an obtuse angle.

[0039] Optionally, the gas mixer further includes a second air inlet connector 4, which is disposed at the second air inlet port 102 and communicates with the cavity, and is used to connect a second air inlet pipe. In specific implementation, the end of the second air inlet pipe that is not connected to the second air inlet connector 4 can be connected to a nitrogen storage device, so that the nitrogen in the nitrogen storage device can be passed into the cavity through the second air inlet pipe to purge the cavity and the combustion chamber.

[0040] In this embodiment, the second air inlet joint 4 is arranged on the outer peripheral surface of the main pipe 1, and the axial direction of the second air inlet joint 4 is perpendicular to the axial direction of the main pipe 1. In other embodiments, according to the installation position of the gas mixer, the axial direction of the second air inlet joint 4 and the axial direction of the main pipe 1 can be set at a second included angle, and the second included angle is an acute angle or an obtuse angle.

[0041] Optionally, the gas mixer further includes a third air inlet joint 5. The third air inlet joint 5 is connected to the first end and is used for connecting a third air inlet pipe. Specifically, when implemented, one end of the third air inlet pipe that is not connected to the third air inlet joint 5 can be connected to equipment such as a fan to suck air from the external environment into the cavity through the third air inlet pipe. The port of the third air inlet joint 5 where the third air inlet pipe is connected is the inlet 103 of the gas mixer. In this embodiment, the axial direction of the third air inlet joint 5 is parallel to the axial direction of the main pipe 1.

[0042] This embodiment also provides a combustion water washing scrubber, including the above-mentioned gas mixer. The mixed combustible gas of the combustion water washing scrubber is fully mixed by the gas mixer before entering the combustion chamber. Then, air can be introduced into the cavity through the inner pipe 2, and fuel gas can be introduced into the cavity through one of the first air inlet 101 and the second air inlet 102. This enables the fuel gas to form a flow around the outer periphery of the inner pipe 2 when entering the cavity, which can accelerate the mixing with the gas in the cavity, thereby improving the combustion efficiency of the mixed gas after entering the combustion chamber. Additionally, nitrogen or other gases to be mixed can be introduced into the cavity through the other one of the first air inlet 101 and the second air inlet 102. The gases entering the cavity through the first air inlet 101 and the second air inlet 102 can both form a flow around the outer periphery of the inner pipe 2 to ensure uniform mixing of various gases or sufficient purging of the inside of the cavity.

[0043] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Gas mixer, characterized in that, Comprising: A main body pipe (1) having a cavity that penetrates at both ends in the axial direction of the main body pipe (1). A first air inlet (101) and a second air inlet (102) are provided on the outer peripheral surface of the main body pipe (1), and both the first air inlet (101) and the second air inlet (102) communicate with the cavity. An inner pipe (2) is partially inserted into the cavity and the axial direction of the inner pipe (2) is parallel to the axial direction of the main body pipe (1). The first end of the inner pipe (2) is located outside the cavity, and the second end of the inner pipe (2) is located inside the cavity and extends to the side of the first air inlet (101) and the second air inlet (102) away from the first end.

2. The gas mixer according to claim 1, wherein, The main body pipe (1) includes a connected equal-diameter section (11) and a reduced-diameter section (12), and the flow area of the reduced-diameter section (12) gradually decreases towards the side away from the equal-diameter section (11).

3. The gas mixer according to claim 2, wherein A chamfer (131) is provided at the outlet end of the reduced-diameter section (12) facing away from the equal-diameter section (11), and the chamfer (131) is used to enlarge the flow area of the outlet end.

4. The gas mixer according to claim 3, characterized in that, The main body pipe (1) further includes a mounting section (13), the mounting section (13) is connected to the outlet end, the mounting section (13) has a mounting flange, and the main body pipe (1) is connected to the cavity opening of the combustion chamber of the combustion water washing scrubber through the mounting flange.

5. The gas mixer according to claim 1, characterized in that, The gas mixer further includes a first air inlet joint (3), the first air inlet joint (3) is provided at the first air inlet (101) and communicates with the cavity, and the first air inlet joint (3) is used to connect a first air inlet pipe.

6. The gas mixer according to claim 5, characterized in that, The axial direction of the first air inlet joint (3) is perpendicular to the axial direction of the main body pipe (1).

7. The gas mixer according to claim 1, wherein The gas mixer further includes a second air inlet joint (4), the second air inlet joint (4) is provided at the second air inlet (102) and communicates with the cavity, and the second air inlet joint (4) is used to connect a second air inlet pipe.

8. The gas mixer according to claim 7, wherein The axial direction of the second air inlet joint (4) is perpendicular to the axial direction of the main body pipe (1).

9. The gas mixer according to claim 1, characterized in that, The gas mixer further includes a third air inlet joint (5), the third air inlet joint (5) is connected to the first end, and the third air inlet joint (5) is used to connect a third air inlet pipe.

10. Combustion water-washing scrubber, characterized in that, Comprising the gas mixer according to any one of claims 1 to 9.

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