Gas mixing device

Abstract

The utility model discloses a gas mixing device. The device comprises a gas mixing chamber (1), the gas mixing chamber (1) comprises a shell (101) and an inner container (102); the inner container (102) is arranged in the shell (101), and an interlayer cavity (103) is formed between the inner container (102) and the shell (101); a first gas inlet (104) and a second gas inlet (105) are formed in the shell (101), and the first gas inlet (104) and the second gas inlet (105) are located on the two sides of the shell (101) respectively; a mixed gas outlet (106) is formed in one end of the shell (101), and the mixed gas outlet (106) is formed in the interlayer cavity (103). According to the utility model, the gas can be quickly and uniformly mixed, the problem that the gas is difficult to fully and uniformly mix in the prior art is solved, and the safety and the reliability of the mixed gas in subsequent use are improved.

Description

Technical Field

[0001] The utility model relates to a mixing device, in particular to a gas mixing device, and belongs to the technical field of gas mixing. Background Art

[0002] Industrial production often produces byproducts that cannot participate in reactions and may even affect the progress and efficiency of industrial production. However, if these byproducts can be properly utilized after processing, it can not only avoid resource waste, but also reduce production costs and improve energy efficiency.

[0003] For example, a large amount of low calorific value and highly toxic by-product blast furnace gas is produced during the blast furnace ironmaking process. The existing sintering gas injection technology requires the use of high calorific value and non-toxic or low-toxic fuels such as natural gas and coke oven gas. However, both natural gas and coke oven gas are scarce resources in sintering plants at this stage. At this time, it is possible to consider mixing blast furnace gas with hydrogen-rich gas to improve the quality of the mixed gas, and then use the mixed gas containing blast furnace gas for sintering gas injection, thereby avoiding resource waste and not affecting the effect of gas injection-assisted sintering. However, there are still the following problems in this scheme: the mixing equipment in the existing technology cannot achieve or is difficult to ensure the full mixing of two or more gases, and the mixed gas is injected into the sintering gas without mixing, which may affect the sintering effect due to the inability to ensure the calorific value of the mixed gas, and ultimately lead to the inability to ensure the quality of the sintered ore; in addition, there is a risk of gas escaping to the environment when injecting gas during sintering, and the unmixed mixed gas still has high toxicity. Therefore, injecting unmixed mixed gas may affect the safety of the sintering plant. Utility Model Content

[0004] To address the technical problem that existing mixing devices have difficulty achieving sufficient mixing of two or more gases, the present invention proposes a gas mixing device. In the solution of the present invention, a gas mixing chamber includes an outer shell, an inner liner, and an interlayer chamber between the outer shell and the inner liner. A first gas inlet and a second gas inlet are respectively arranged on either side of the outer shell. That is, the two gases entering the interlayer chamber from different gas inlets have opposite air intake directions, and the two gases form a vortex in the interlayer chamber, thereby forming a strong shear flow between the two gases, thereby achieving rapid mixing between the two gases. This solves the problem of gas difficulty in sufficient mixing in the prior art and increases the safety and reliability of the mixed gas in subsequent use.

[0005] According to an embodiment of the present invention, a gas mixing device is provided.

[0006] A gas mixing device includes a gas mixing chamber. The gas mixing chamber includes an outer shell and an inner liner. The inner liner is disposed within the outer shell, with an interlayer chamber defined between the inner liner and the outer shell. The outer shell is provided with a first gas inlet and a second gas inlet, respectively located on opposite sides of the outer shell. A mixed gas outlet is provided at one end of the outer shell, and the mixed gas outlet is disposed on the interlayer chamber.

[0007] In the present invention, the first gas inlet and the second gas inlet are staggered in the axial direction of the housing.

[0008] In the present invention, the housing is provided with a plurality of first gas inlets and a plurality of second gas inlets. The plurality of first gas inlets are evenly spaced along the axial direction on one side of the housing. The plurality of second gas inlets are evenly spaced along the axial direction on the other side of the housing. The plurality of first gas inlets and the plurality of second gas inlets are staggered in the axial direction.

[0009] In the present invention, the first gas inlet is connected to a first gas pipeline, and the arrangement direction of the first gas pipeline is tangent to the outer shell of the gas mixing chamber.

[0010] In the present invention, the second gas inlet is connected to a second gas pipeline, and the second gas pipeline is arranged in a direction tangent to the outer shell of the gas mixing chamber.

[0011] Preferably, the tangent direction between the first gas pipeline and the gas mixing chamber and the tangent direction between the second gas pipeline and the gas mixing chamber are perpendicular to each other.

[0012] In the present invention, the inner container and the outer shell are coaxially arranged, wherein the inner container is a cylindrical structure of equal diameter, and the outer shell is a cylindrical structure of non-equal diameter.

[0013] Preferably, along the axial direction, the outer diameter of the housing gradually increases from one end to the other end. The mixed gas outlet is provided at the end of the housing with the larger outer diameter.

[0014] In the present invention, the gas mixing chamber is arranged horizontally.

[0015] In the present invention, the housing is provided with 1-12 first gas inlets, preferably 2-8 first gas inlets, and the housing is provided with 1-12 second gas inlets, preferably 2-8 second gas inlets.

[0016] To address the technical problem that existing mixing equipment has difficulty in achieving sufficient mixing of two or more gases, the present invention proposes a gas mixing device. In the solution of the present invention, a gas mixing chamber includes an outer shell, an inner liner, and an interlayer chamber between the outer shell and the inner liner. A first gas inlet and a second gas inlet are respectively arranged on either side of the outer shell. That is, the two gases entering the interlayer chamber from different gas inlets have opposite air intake directions, and the two gases form a vortex in the interlayer chamber, thereby generating strong impact and shearing effects between the two gases, thereby achieving rapid mixing between the two gases. This solves the problem of gas difficulty in sufficient mixing in the prior art and increases the safety and reliability of the mixed gas in subsequent use.

[0017] Preferably, the first gas inlet and the second gas inlet on both sides of the shell are staggered in the axial direction, so that the shear flow formed between the two gases with opposite swirl directions is more intense, further enhancing the mixing effect between the two gases.

[0018] In order to achieve rapid mixing between large flow gases, the utility model sets multiple first gas inlets and multiple second gas inlets on both sides of the shell. The multiple first gas inlets are evenly spaced along the axial direction on one side of the shell, and the multiple second gas inlets are evenly spaced along the axial direction on the other side of the shell. Similarly, the multiple first gas inlets and the multiple second gas inlets are staggered in the axial direction. The staggered arrangement mentioned here means that the multiple first gas inlets are respectively corresponding to the gaps between adjacent second gas inlets. Of course, it is also true that the multiple second gas inlets are respectively corresponding to the gaps between adjacent first gas inlets, such as Figure 1 At this time, because the adjacent first and second gas inlets have opposite air intake directions, the two gases entering the mixing chamber swirl in opposite directions, forming a very strong shear flow between the two gases, thereby achieving rapid mixing between the two gases. The mixing chamber has multiple first gas inlets and multiple second gas inlets staggered along the axial direction, that is, there are multiple swirling gases in opposite directions in the mixing chamber, thus achieving rapid mixing between large flow rates of gases.

[0019] It is worth noting that when using the above-mentioned device to mix gases, if two gases are respectively introduced into the mixing chamber from the first gas inlet and the second gas inlet, the gas intake direction is the radial direction of the outer shell cross section. At this time, the same gas entering the interlayer chamber will be diverted along the outer wall of the inner liner to flow to both sides of the inner liner. This will inevitably weaken the shearing effect between the two gases entering from the two gas inlets and affect the final gas mixing effect. Based on this, the utility model connects a first gas pipeline (i.e., the first gas intake pipeline) to the first gas inlet and a second gas pipeline (i.e., the second gas intake pipeline) to the second gas inlet. The first gas pipeline and the second gas pipeline are respectively arranged in a direction tangent to the outer shell of the mixing chamber. Moreover, the tangent direction between the first gas pipeline and the mixing chamber and the tangent direction between the second gas pipeline and the mixing chamber are perpendicular to each other. The first gas pipeline and the second gas pipeline are respectively used to control the air intake direction of the two gases. The two are tangent to the mixing chamber to ensure that the gas entering the interlayer chamber will not be diverted. The tangent directions of the two and the mixing chamber are perpendicular to each other, so that the two gases entering from the two gas inlets can ensure that the swirl directions of the two gases in the interlayer chamber are opposite without diversion, thereby ensuring the shear flow between the two gases and ensuring the final gas mixing effect.

[0020] In the present invention, the gas mixing chamber is preferably arranged horizontally, and the inner liner and the outer shell are arranged coaxially. Such an arrangement can enhance the collision and fusion between the two gases entering the interlayer chamber, thereby improving the gas mixing effect. Considering that the gas entering the gas mixing chamber flows within the interlayer chamber, in order to further improve the mixing effect and gas mixing volume of the two gases, the present invention configures the inner liner as a uniform cylindrical structure and the outer shell as a non-uniform cylindrical structure. The non-uniform cylindrical structure herein is preferably a structure in which the outer diameter of the outer shell gradually increases from one end to the other end of the outer shell, and the mixed gas outlet is located at the end with the larger outer diameter.

[0021] Specifically, the number of the first gas inlet and the second gas inlet on the mixing chamber can be set or adjusted as needed. Generally speaking, the number of the first gas inlet and / or the second gas inlet can be 1-12, preferably 2-8, for example, 4 first gas inlets and 3 second gas inlets are set respectively, for example, 2 first gas inlets are set. During operation, the first gas and the second gas are respectively fed into the mixing chamber from the first gas inlet and the second gas inlet, forming a vortex in the interlayer chamber of the mixing chamber. Since the vortex directions of the adjacent first gas inlet and the second gas inlet are exactly opposite, a very strong shear flow is formed between the two gases, thereby achieving rapid mixing between the two gases. When multiple first gas inlets and second gas inlets are provided on the mixing chamber along the axis, that is, there are multiple vortex gases in opposite directions in the mixing chamber, it is possible to achieve rapid mixing between large flow rates of gases. Finally, the mixed gas is discharged from the mixed gas outlet of the mixing chamber.

[0022] It should be noted that the present invention provides a first gas inlet and a second gas inlet on either side of the mixing chamber, respectively, for mixing two gases. Similarly, the present invention can also provide multiple gas inlets evenly distributed along the circumference of the mixing chamber as needed. Furthermore, the multiple gas inlets can also be staggered along the axial direction, enabling adaptive mixing of multiple gases.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The utility model arranges the first gas inlet and the second gas inlet on both sides of the shell, that is, the two gases entering the interlayer chamber from different gas inlets have opposite air intake directions, and the two gases form a vortex in the interlayer chamber, so that strong impact and shearing effects are generated between the two gases, thereby achieving rapid mixing between the two gases, solving the problem of difficulty in fully mixing gases in the prior art, and increasing the safety and reliability of the mixed gas in subsequent use.

[0025] 2. The utility model staggers the first gas inlet and the second gas inlet on both sides of the shell in the axial direction, so that the shear flow formed between the two gases with opposite swirl directions entering the interlayer chamber is more intense, further enhancing the mixing effect between the two gases.

[0026] 3. The utility model staggers multiple first gas inlets and multiple second gas inlets in the axial direction of the mixing chamber, that is, multiple streams of swirling gases in opposite directions can be simultaneously fed into the mixing chamber, thereby achieving rapid mixing between large flow gases.

[0027] 4. The utility model connects a first gas pipeline to a first gas inlet and a second gas pipeline to a second gas inlet. The setting directions of the first gas pipeline and the second gas pipeline are respectively tangent to the outer shell of the mixing chamber. Moreover, the tangent direction between the first gas pipeline and the mixing chamber and the tangent direction between the second gas pipeline and the mixing chamber are perpendicular to each other, thereby ensuring that the two gases entering the interlayer chamber will not generate diversion and the swirl directions of the two gases in the interlayer chamber are opposite, thereby ensuring shear flow between the two gases, so that the final gas mixing effect is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a top view of the gas mixing device in the present invention;

[0029] Figure 2 It is a left view of the gas mixing device in the present utility model.

[0030] Reference numerals:

[0031] 1: gas mixing chamber; 101: outer shell; 102: inner liner; 103: interlayer chamber; 104: first gas inlet; 105: second gas inlet; 106: mixed gas outlet; 2: first gas pipeline; 3: second gas pipeline. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is illustrated below with examples, and the scope of protection requested by the present invention includes but is not limited to the following embodiments.

[0033] According to an embodiment of the present invention, a gas mixing device is provided.

[0034] A gas mixing device includes a gas mixing chamber 1. The gas mixing chamber 1 includes an outer shell 101 and an inner liner 102. The inner liner 102 is disposed within the outer shell 101, with an interlayer chamber 103 between the inner liner 102 and the outer shell 101. The outer shell 101 is provided with a first gas inlet 104 and a second gas inlet 105, and the first gas inlet 104 and the second gas inlet 105 are respectively located on either side of the outer shell 101. A mixed gas outlet 106 is provided at one end of the outer shell 101, and the mixed gas outlet 106 is disposed on the interlayer chamber 103.

[0035] In the present invention, the first gas inlet 104 and the second gas inlet 105 are staggered in the axial direction of the housing 101 .

[0036] In the present invention, the housing 101 is provided with a plurality of first gas inlets 104 and a plurality of second gas inlets 105. The plurality of first gas inlets 104 are evenly spaced along the axial direction on one side of the housing 101. The plurality of second gas inlets 105 are evenly spaced along the axial direction on the other side of the housing 101. The plurality of first gas inlets 104 and the plurality of second gas inlets 105 are staggered along the axial direction.

[0037] In the present invention, the first gas inlet 104 is connected to the first gas pipeline 2. The first gas pipeline 2 is arranged in a direction tangent to the outer shell 101 of the gas mixing chamber 1.

[0038] In the present invention, the second gas inlet 105 is connected to the second gas pipeline 3. The second gas pipeline 3 is arranged in a direction tangent to the outer shell 101 of the gas mixing chamber 1.

[0039] Preferably, the tangent direction between the first gas pipeline 2 and the gas mixing chamber 1 and the tangent direction between the second gas pipeline 3 and the gas mixing chamber 1 are perpendicular to each other.

[0040] In the present invention, the inner container 102 is coaxially arranged with the outer shell 101. The inner container 102 is a cylindrical structure of equal diameter, and the outer shell 101 is a cylindrical structure of non-equal diameter.

[0041] Preferably, along the axial direction, the outer diameter of the housing 101 gradually increases from one end to the other end. The mixed gas outlet 106 is provided on the end of the housing 101 with the larger outer diameter.

[0042] In the present invention, the gas mixing chamber 1 is arranged horizontally.

[0043] In the present invention, the housing 101 is provided with 1-12 first gas inlets 104 , preferably 2-8 first gas inlets 104 . The housing 101 is provided with 1-12 second gas inlets 105 , preferably 2-8 second gas inlets 105 . Example 1

[0044] like Figure 1-2 As shown, a gas mixing device includes a gas mixing chamber 1. The gas mixing chamber 1 is arranged horizontally and includes an outer shell 101 and an inner liner 102. The inner liner 102 is disposed within the outer shell 101, with an interlayer chamber 103 between the inner liner 102 and the outer shell 101. The outer shell 101 is provided with a first gas inlet 104 and a second gas inlet 105, and the first gas inlet 104 and the second gas inlet 105 are respectively located on either side of the outer shell 101. A mixed gas outlet 106 is provided at one end of the outer shell 101, and the mixed gas outlet 106 is disposed on the interlayer chamber 103. Example 2

[0045] Example 1 is repeated, except that the first gas inlet 104 and the second gas inlet 105 are staggered in the axial direction of the housing 101 . Example 3

[0046] Example 2 was repeated, except that three first gas inlets 104 and two second gas inlets 105 were provided on the housing 101. The three first gas inlets 104 were evenly spaced along the axial direction on one side of the housing 101. The two second gas inlets 105 were evenly spaced along the axial direction on the other side of the housing 101. In the axial direction, the three first gas inlets 104 and the two second gas inlets 105 were staggered. Example 4

[0047] Example 2 was repeated, except that four first gas inlets 104 and four second gas inlets 105 were provided on the housing 101. The four first gas inlets 104 were evenly spaced along the axial direction on one side of the housing 101. The four second gas inlets 105 were evenly spaced along the axial direction on the other side of the housing 101. In the axial direction, the four first gas inlets 104 and the four second gas inlets 105 were staggered. Example 5

[0048] The embodiment 3 is repeated, except that the first gas inlet 104 is connected to the first gas pipeline 2. The first gas pipeline 2 is arranged in a direction tangent to the outer shell 101 of the gas mixing chamber 1. Example 6

[0049] The embodiment 5 is repeated, except that the second gas inlet 105 is connected to the second gas pipeline 3. The second gas pipeline 3 is arranged in a direction tangent to the outer shell 101 of the gas mixing chamber 1. Example 7

[0050] Example 6 is repeated, except that the tangent direction between the first gas pipeline 2 and the gas mixing chamber 1 and the tangent direction between the second gas pipeline 3 and the gas mixing chamber 1 are perpendicular to each other. Example 8

[0051] Example 7 is repeated, except that the inner container 102 is coaxially arranged with the outer shell 101. The inner container 102 is a cylindrical structure of equal diameter, and the outer shell 101 is a cylindrical structure of non-equal diameter. Example 9

[0052] The embodiment 8 is repeated except that the outer diameter of the housing 101 gradually increases from one end to the other along the axial direction. The mixed gas outlet 106 is provided at the end of the housing 101 with the larger outer diameter.

[0053] In this embodiment, the operating principle of the gas mixing device is as follows: the first gas and the second gas are respectively delivered into the mixing chamber 1 through the first gas inlet 104 and the second gas inlet 105, forming a vortex within the interlayer chamber 103 of the mixing chamber 1. Because the vortex directions of the adjacent first gas inlet 104 and the second gas inlet 105 are exactly opposite, a very strong shear flow is formed between the two gases, thereby achieving rapid mixing between the two gases. Along the axial direction, there are multiple vortexes of gas in opposite directions within the mixing chamber 1, thereby achieving rapid mixing between large gas flows. Finally, the mixed gas is discharged from the mixed gas outlet 106 of the mixing chamber 1.

Claims

1. A gas mixing device, characterized in that: The device comprises a gas mixing chamber (1); the gas mixing chamber (1) comprises an outer shell (101) and an inner liner (102); the inner liner (102) is arranged in the outer shell (101), and an interlayer chamber (103) is provided between the inner liner (102) and the outer shell (101); a first gas inlet (104) and a second gas inlet (105) are provided on the outer shell (101), and the first gas inlet (104) and the second gas inlet (105) are respectively located on both sides of the outer shell (101); a mixed gas outlet (106) is provided at one end of the outer shell (101), and the mixed gas outlet (106) is provided on the interlayer chamber (103).

2. The gas mixing device according to claim 1, characterized in that: The first gas inlet (104) and the second gas inlet (105) are staggered in the axial direction of the housing (101).

3. The gas mixing device according to claim 2, characterized in that: The housing (101) is provided with a plurality of first gas inlets (104) and a plurality of second gas inlets (105); the plurality of first gas inlets (104) are evenly spaced and arranged along the axial direction on one side of the housing (101); the plurality of second gas inlets (105) are evenly spaced and arranged along the axial direction on the other side of the housing (101); in the axial direction, the plurality of first gas inlets (104) and the plurality of second gas inlets (105) are staggered with each other.

4. The gas mixing device according to any one of claims 1 to 3, characterized in that: The first gas inlet (104) is connected to a first gas pipeline (2); the arrangement direction of the first gas pipeline (2) is tangent to the outer shell (101) of the gas mixing chamber (1).

5. The gas mixing device according to any one of claims 1 to 3, characterized in that: The second gas inlet (105) is connected to a second gas pipeline (3); the second gas pipeline (3) is arranged in a direction tangent to the outer shell (101) of the gas mixing chamber (1).

6. The gas mixing device according to claim 4, characterized in that: The second gas inlet (105) is connected to a second gas pipeline (3); the second gas pipeline (3) is arranged in a direction tangent to the outer shell (101) of the gas mixing chamber (1).

7. The gas mixing device according to claim 5, characterized in that: The tangent direction between the first gas pipeline (2) and the gas mixing chamber (1) and the tangent direction between the second gas pipeline (3) and the gas mixing chamber (1) are perpendicular to each other.

8. The gas mixing device according to claim 6, characterized in that: The tangent direction between the first gas pipeline (2) and the gas mixing chamber (1) and the tangent direction between the second gas pipeline (3) and the gas mixing chamber (1) are perpendicular to each other.

9. The gas mixing device according to any one of claims 1-3 and 6-8, characterized in that: The inner container (102) and the outer shell (101) are coaxially arranged; wherein the inner container (102) is a cylindrical structure of equal diameter, and the outer shell (101) is a cylindrical structure of non-equal diameter.

10. The gas mixing device according to claim 4, characterized in that: The inner container (102) and the outer shell (101) are coaxially arranged; wherein the inner container (102) is a cylindrical structure of equal diameter, and the outer shell (101) is a cylindrical structure of non-equal diameter.

11. The gas mixing device according to claim 5, characterized in that: The inner container (102) and the outer shell (101) are coaxially arranged; wherein the inner container (102) is a cylindrical structure of equal diameter, and the outer shell (101) is a cylindrical structure of non-equal diameter.

12. The gas mixing device according to claim 9, characterized in that: Along the axial direction, the outer diameter of the housing (101) gradually increases from one end to the other end; the mixed gas outlet (106) is provided at the end of the housing (101) with the larger outer diameter.

13. The gas mixing device according to claim 10 or 11, characterized in that: Along the axial direction, the outer diameter of the housing (101) gradually increases from one end to the other end; the mixed gas outlet (106) is provided at the end of the housing (101) with the larger outer diameter.

14. The gas mixing device according to any one of claims 1-3, 6-8, and 10-12, characterized in that: The gas mixing chamber (1) is arranged horizontally.

15. The gas mixing device according to claim 4, characterized in that: The gas mixing chamber (1) is arranged horizontally.

16. The gas mixing device according to claim 5, characterized in that: The gas mixing chamber (1) is arranged horizontally.

17. The gas mixing device according to claim 9, characterized in that: The gas mixing chamber (1) is arranged horizontally.

18. The gas mixing device according to any one of claims 1-3, 6-8, 10-12, and 15-17, characterized in that: The housing (101) is provided with 1 to 12 first gas inlets (104); the housing (101) is provided with 1 to 12 second gas inlets (105).

19. The gas mixing device according to claim 4, characterized in that: The housing (101) is provided with 1 to 12 first gas inlets (104); the housing (101) is provided with 1 to 12 second gas inlets (105).

20. The gas mixing device according to claim 5, characterized in that: The housing (101) is provided with 1 to 12 first gas inlets (104); the housing (101) is provided with 1 to 12 second gas inlets (105).

21. The gas mixing device according to claim 9, characterized in that: The housing (101) is provided with 1 to 12 first gas inlets (104); the housing (101) is provided with 1 to 12 second gas inlets (105).

22. The gas mixing device according to claim 18, characterized in that: The housing (101) is provided with 2-8 first gas inlets (104); the housing (101) is provided with 2-8 second gas inlets (105).

23. The gas mixing device according to any one of claims 19 to 21, characterized in that: The housing (101) is provided with 2-8 first gas inlets (104); the housing (101) is provided with 2-8 second gas inlets (105).

Images