Material mixing reaction device

Abstract

The utility model provides a material mixing reaction device which comprises a mixing pipe provided with a liquid inlet and a mixing outlet, the mixing pipe comprises a gradually-contracted section, an inlet of the gradually-contracted section is communicated with the liquid inlet, an outlet of the gradually-contracted section is communicated with the mixing outlet, and the liquid inlet is communicated with the mixing outlet. The section size of the gradually-shrinking section is gradually reduced in the direction from the liquid inlet to the mixed outlet; the at least two air inlet pipes are arranged on the outer wall of the mixing pipe and located on the upstream of the gradually-shrinking section, the at least two air inlet pipes are distributed in the circumferential direction of the mixing pipe, outlets of the air inlet pipes are communicated with the mixing pipe, and the air outlet direction of the air inlet pipes is tangent to the inner side wall of the mixing pipe. Through the technical scheme provided by the invention, the problem that the improvement effect on the speed and progress of the gas-liquid oxidation reaction is not obvious by adjusting and optimizing the stirring form and the stirring frequency of the reaction kettle in the related technology can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid oxidation reaction, in particular to a material mixing reaction device. Background Art

[0002] Traditional gas-liquid oxidation reactions mostly use kettle reactions, using the stirring of the reactor to contact and react the material with the gas to achieve the reaction purpose. Due to the low reaction efficiency, long reaction time and large gas usage of traditional gas-liquid oxidation reactions, traditional gas-liquid oxidation reactions cause a lot of energy waste.

[0003] In the related art, the speed and progress of the gas-liquid oxidation reaction can be improved to a certain extent by adjusting and optimizing the stirring form and stirring frequency of the reactor.

[0004] However, in the related art, the speed and progress of the gas-liquid oxidation reaction are not significantly improved by adjusting and optimizing the stirring form and stirring frequency of the reactor. Utility Model Content

[0005] The utility model provides a material mixing reaction device to solve the problem in the related art that the speed and process of the gas-liquid oxidation reaction are not significantly improved by adjusting and optimizing the stirring form and stirring frequency of the reactor.

[0006] The utility model provides a material mixing reaction device, which comprises: a mixing tube, which has a liquid inlet and a mixing outlet, the mixing tube comprising a tapering section, the inlet of the tapering section is connected to the liquid inlet, the outlet of the tapering section is connected to the mixing outlet, and the cross-sectional size of the tapering section gradually decreases in the direction from the liquid inlet to the mixing outlet; at least two air inlet pipes are arranged on the outer wall of the mixing tube and located upstream of the tapering section, at least two air inlet pipes are arranged in the circumferential direction of the mixing tube, the outlet of the air inlet pipe is connected to the mixing tube, and the air outlet direction of the air inlet pipe is tangent to the inner wall of the mixing tube.

[0007] Furthermore, the air outlet direction of the air intake pipe and the flow direction of the mixing pipe are arranged at an angle, and the angle between the air intake pipe and the mixing pipe is less than or equal to 90°.

[0008] Furthermore, a plurality of sieve holes are arranged at the air outlet of the air inlet pipe.

[0009] Furthermore, at least two air inlet pipes are arranged at equal intervals in the circumferential direction of the mixing pipe.

[0010] Furthermore, at least two intake pipes are located on the same cross section of the mixing pipe.

[0011] Furthermore, at least two air intake pipes are detachably arranged on the mixing pipe.

[0012] Furthermore, the mixing tube also includes a gradually expanding section, the inlet of the gradually expanding section is connected to the outlet of the gradually contracting section, the outlet of the gradually expanding section is connected to the mixing outlet, and the cross-sectional size of the gradually expanding section gradually increases in the direction from the liquid inlet to the mixing outlet.

[0013] Furthermore, the mixing tube also includes a first straight pipe section, the inlet of the first straight pipe section is connected to the outlet of the gradually narrowing section, and the outlet of the first straight pipe section is connected to the inlet of the gradually expanding section.

[0014] Furthermore, the material mixing reaction device further comprises an air intake valve and a first flow meter arranged on the air intake pipe; and / or, the material mixing reaction device further comprises a liquid intake valve and a second flow meter arranged at the liquid inlet.

[0015] Furthermore, the material mixing reaction device also includes a sampling piece arranged at the mixing outlet.

[0016] By applying the technical solution of the utility model, a material mixing reaction device comprises a mixing tube and at least two air inlet pipes. When gas-liquid mixing is performed by using the material mixing reaction device, liquid phase components are injected into the mixing tube by using the liquid inlet, and gas phase components are injected into the mixing tube by using at least two air inlet pipes. Since the air inlet pipe is located upstream of the converging section, the gas phase components in the mixing tube can be rapidly rotated and stretched and deformed by using the converging section, thereby finally improving the gas-liquid mixing effect in the mixing tube. Moreover, since the gas outlet direction of the air inlet pipe is tangentially arranged to the inner wall of the mixing tube, a vortex is formed in the mixing tube. At least two air inlet pipes arranged in the circumferential direction of the mixing tube are used to apply multiple tangential forces to the liquid phase components in the mixing tube, thereby increasing the spiral effect of the gas-liquid two-phase in the mixing tube, reducing the Sauter diameter of the bubbles in the mixing tube, enhancing the bubble crushing effect, and finally enhancing the gas-liquid mixing effect of the material mixing reaction device to improve the speed and progress of the gas-liquid oxidation reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The schematic diagram of the structure of the material mixing reaction device provided by the embodiment of the utility model is shown;

[0019] Figure 2 A schematic structural diagram showing another perspective of the material mixing reaction device provided by an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the air inlet pipe structure of the material mixing reaction device provided in an embodiment of the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Mixing tube; 11. Liquid inlet; 12. Mixing outlet; 13. Gradually narrowing section; 14. Gradually expanding section; 15. First straight pipe section; 16. Second straight pipe section;

[0023] 20. Air intake pipe; 21. Sieve hole;

[0024] A. The angle between the intake pipe and the mixing pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 3 As shown, an embodiment of the utility model provides a material mixing reaction device, which includes a mixing tube 10 and at least two air inlet pipes 20. The mixing tube 10 has a liquid inlet 11 and a mixing outlet 12. The mixing tube 10 includes a tapered section 13. The inlet of the tapered section 13 is connected to the liquid inlet 11, and the outlet of the tapered section 13 is connected to the mixing outlet 12. The cross-sectional size of the tapered section 13 gradually decreases in the direction from the liquid inlet 11 to the mixing outlet 12. At least two air inlet pipes 20 are arranged on the outer wall of the mixing tube 10 and are located upstream of the tapered section 13. At least two air inlet pipes 20 are arranged in the circumferential direction of the mixing tube 10. The outlet of the air inlet pipe 20 is connected to the mixing tube 10, and the air outlet direction of the air inlet pipe 20 is tangent to the inner wall of the mixing tube 10.

[0027] The material mixing reaction device provided in this embodiment is used. When gas-liquid mixing is performed using the material mixing reaction device, the liquid phase component is injected into the mixing tube 10 using the liquid inlet 11, and the gas phase component is injected into the mixing tube 10 using at least two air inlet pipes 20. Since the air inlet pipe 20 is located upstream of the converging section 13, the gas phase component bubbles in the mixing tube 10 can be rapidly rotated and stretched and deformed using the converging section 13, thereby ultimately improving the gas-liquid mixing effect in the mixing tube 10. Moreover, since the gas outlet direction of the air inlet pipe 20 is tangentially arranged to the inner wall of the mixing tube 10, a vortex is formed in the mixing tube 10. At least two air inlet pipes 20 arranged in the circumferential direction of the mixing tube 10 are used to apply multiple tangential forces to the liquid phase component in the mixing tube 10, thereby increasing the spiral effect of the gas-liquid two-phase in the mixing tube 10, reducing the Sauter diameter of the bubbles in the mixing tube 10, enhancing the bubble crushing effect, and ultimately enhancing the gas-liquid mixing effect of the material mixing reaction device to improve the speed and progress of the gas-liquid oxidation reaction.

[0028] It should be noted that the gas outlet directions of at least two air inlet pipes 20 are both clockwise or counterclockwise along the circumference of the mixing tube 10 , that is, the gas outlet directions of at least two air inlet pipes 20 are the same in the circumferential direction of the mixing tube 10 .

[0029] like Figure 1 As shown, the gas outlet direction of the air inlet pipe 20 is set at an angle to the flow direction of the mixing tube 10, and the angle A between the air inlet pipe 20 and the mixing tube 10 is less than or equal to 90°. When the gas phase component enters the mixing tube 10 through the air inlet pipe 20, it can reduce the obstruction of the gas phase component to the liquid phase component in the mixing tube 10, increase the speed in the mixing tube 10, and strengthen the shearing effect of the liquid phase component on the gas phase component, so that the gas phase component is distributed as small bubbles in the mixing tube 10, thereby enhancing the gas-liquid mixing effect of the material mixing reaction device.

[0030] In this embodiment, the angle A between the intake pipe 20 and the mixing pipe 10 is 90°.

[0031] like Figure 3 As shown, a plurality of sieve holes 21 are provided at the gas outlet of the air inlet pipe 20. By using the plurality of sieve holes 21 provided at the outlet of the air inlet pipe 20, the gas in the air inlet pipe 20 can be preliminarily divided into a plurality of small gas flows before entering the mixing tube 10, thereby reducing the Sauter diameter of the bubbles in the mixing tube 10, enhancing the breaking speed and breaking effect of the bubbles generated after the gas enters the mixing tube 10, and finally enhancing the gas-liquid mixing effect of the material mixing reaction device to improve the speed and progress of the gas-liquid oxidation reaction.

[0032] The cross-sectional shape of the sieve hole 21 may be circular, elliptical or elongated.

[0033] like Figure 2As shown, at least two air inlet pipes 20 are arranged at equal intervals on the circumference of the mixing tube 10, thereby improving the uniformity of the distribution of the tangential force acting on the liquid phase component in the mixing tube 10 on the circumference of the mixing tube 10, further increasing the spiral effect of the gas-liquid two phases in the mixing tube, reducing the Sauter diameter of the bubbles in the mixing tube, enhancing the bubble crushing effect, and ultimately enhancing the gas-liquid mixing effect of the material mixing reaction device to increase the speed and progress of the gas-liquid oxidation reaction.

[0034] like Figure 1 As shown, at least two air inlet pipes 20 are located on the same cross-section of the mixing tube 10. After the liquid phase component in the mixing tube 10 is subjected to the tangential force, the spiral effect of the gas-liquid two phases in the mixing tube is further increased, the Sauter diameter of the bubbles in the mixing tube is reduced, the bubble crushing effect is enhanced, and finally the gas-liquid mixing effect of the material mixing reaction device is enhanced to improve the speed and progress of the gas-liquid oxidation reaction.

[0035] In this embodiment, at least two air inlet pipes 20 are detachably arranged on the mixing tube 10. By disassembling and assembling the air inlet pipes 20, the number of the air inlet pipes 20 arranged on the mixing tube 10 can be changed, so that the number of the air inlet pipes 20 can be adjusted according to different materials and reaction characteristics, and the cost of the material mixing reaction device can be reduced.

[0036] like Figure 1 As shown, the mixing tube 10 further includes a gradually expanding section 14, the inlet of the gradually expanding section 14 is connected to the outlet of the gradually contracting section 13, the outlet of the gradually expanding section 14 is connected to the mixing outlet 12, and the cross-sectional size of the gradually expanding section 14 gradually increases in the direction from the liquid inlet 11 to the mixing outlet 12. The gas-liquid mixture is rapidly decelerated and depressurized in the gradually expanding section 14, which strengthens the interaction between the bubbles and the flow field and enhances the bubble crushing effect, and finally enhances the gas-liquid mixing effect of the material mixing reaction device to improve the speed and progress of the gas-liquid oxidation reaction.

[0037] like Figure 1 As shown, the mixing tube 10 further includes a first straight tube section 15, the inlet of the first straight tube section 15 is connected to the outlet of the gradually narrowing section 13, and the outlet of the first straight tube section 15 is connected to the inlet of the gradually expanding section 14. The gas-liquid mixture is pressurized in the first straight tube section 15 to accelerate mixing, enhance the bubble breaking effect, and ultimately enhance the gas-liquid mixing effect of the material mixing reaction device to increase the speed and progress of the gas-liquid oxidation reaction.

[0038] In this embodiment, the mixing tube 10 also includes a second straight pipe section 16, so that the rapid deceleration and pressure reduction effect of the gas-liquid mixture in the gradually expanding section 14 will be delayed and delayed in the second straight pipe section 16, intensifying the rotation and deformation of the bubbles, enhancing the bubble crushing effect, and ultimately enhancing the gas-liquid mixing effect of the material mixing reaction device to increase the speed and progress of the gas-liquid oxidation reaction.

[0039] In this embodiment, the Venturi effect is formed by utilizing the gradually narrowing section 13, the first straight pipe section 15 and the gradually expanding section 14, so that when the gas-liquid mixture flowing in the mixing tube 10 passes through the narrow part of the mixing tube 10, the flow rate of the gas-liquid mixture is rapidly accelerated, so that the internal pressure of the gas-liquid mixture is reduced to form a vacuum, thereby producing an adsorption effect.

[0040] It should be noted that compared with the traditional Venturi tube, the material mixing reaction device provided in this embodiment can reduce the Sauter diameter of the bubbles, enhance the bubble crushing effect, increase the gas-liquid contact area in the mixing tube 10, and enhance the gas-liquid mixing effect of the material mixing reaction device to improve the speed and progress of the gas-liquid oxidation reaction.

[0041] In this embodiment, the material mixing reaction device further includes an air intake valve and a first flow meter disposed on the air intake pipe 20. The air intake valve and the first flow meter cooperate to adjust the air intake speed of the air intake pipe 20.

[0042] In this embodiment, the material mixing reaction device further comprises a liquid inlet valve and a second flow meter arranged at the liquid inlet 11. The liquid inlet speed of the liquid inlet 11 is adjusted by the cooperation of the liquid inlet valve and the second flow meter.

[0043] In this embodiment, the material mixing reaction device further includes a sampling member disposed at the mixing outlet 12. The mixture at the mixing outlet 12 is extracted by the sampling member, and the extracted mixture is tested to evaluate the mixing effect of the material mixing reaction device.

[0044] Specifically, the sampling piece may be a sampling gun.

[0045] By using the material mixing reaction device provided in this embodiment, four air inlet pipes 20 are arranged on the mixing tube 10, the air inlet speeds of the four air inlet pipes 20 are changed synchronously, and the mixture at the mixing outlet 12 is detected to obtain the following sets of data:

[0046]

[0047] The above data show that under the same reaction conditions, compared with the adjustment and optimization of the stirring form and stirring frequency of the reactor in the related art, the reaction time of the material mixing reaction device provided in this embodiment is shorter, the gas usage is lower and the reaction conversion rate is higher, thereby better improving the speed and progress of the gas-liquid oxidation reaction.

[0048] By using the material mixing reaction device provided in this embodiment, the sum of the air intake velocities of at least two air intake pipes 20 and the liquid intake amount of the liquid inlet 11 remain unchanged, and the diameter and the sieve holes of the air intake pipes 20 are the same, the number of air intake pipes 20 is changed, and the mixture at the mixing outlet 12 is detected to obtain the following sets of data:

[0049]

[0050] The above data show that, when the sum of the intake velocities of at least two intake pipes 20 and the amount of liquid inlet 11 remain unchanged, and the diameter and sieve holes of the intake pipes 20 are the same, increasing the number of intake pipes 20 can increase the reaction speed and save reaction time. However, after reaching a certain level, the improvement in reaction speed and conversion rate is not obvious, and the overall economic benefit curve will have a downward trend.

[0051] Therefore, according to different materials and reaction characteristics, it is necessary to adjust the number of air intake pipes and the air intake rate of the device, as follows:

[0052] (1) According to the physical properties such as liquid viscosity, the angle between the intake pipe 20 and the mixing pipe 10 and the number of intake pipes 20 are adjusted;

[0053] (2) The size, number and shape of the sieve holes can be changed. Theoretically, the more sieve holes there are and the smaller the sieve hole area is, the better the gas phase distribution effect is. However, due to the limitations of gas phase resistance, gas phase feed amount and energy consumption, the optimal ratio needs to be selected according to actual conditions. The shape of the sieve holes can be circular, elliptical, long strips, etc.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0059] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A material mixing reaction device, characterized in that: The material mixing reaction device comprises: A mixing tube (10) having a liquid inlet (11) and a mixing outlet (12), the mixing tube (10) comprising a tapered section (13), the inlet of the tapered section (13) being connected to the liquid inlet (11), the outlet of the tapered section (13) being connected to the mixing outlet (12), and the cross-sectional dimension of the tapered section (13) gradually decreasing in a direction from the liquid inlet (11) to the mixing outlet (12); At least two air inlet pipes (20) are arranged on the outer wall of the mixing tube (10) and are located upstream of the tapering section (13); at least two air inlet pipes (20) are arranged in the circumferential direction of the mixing tube (10); outlets of the air inlet pipes (20) are connected to the mixing tube (10); and the air outlet direction of the air inlet pipes (20) is tangent to the inner wall of the mixing tube (10).

2. The material mixing reaction device according to claim 1, characterized in that: The air outlet direction of the air inlet pipe (20) is arranged at an angle with the flow direction of the mixing pipe (10), and the angle between the air inlet pipe (20) and the mixing pipe (10) is less than or equal to 90°.

3. The material mixing reaction device according to claim 2, characterized in that: A plurality of sieve holes (21) are provided at the air outlet of the air inlet pipe (20).

4. The material mixing reaction device according to claim 2, characterized in that: At least two of the air inlet pipes (20) are arranged at equal intervals in the circumferential direction of the mixing pipe (10).

5. The material mixing reaction device according to claim 2, characterized in that: At least two of the air inlet pipes (20) are located on the same cross section of the mixing pipe (10).

6. The material mixing reaction device according to claim 1, characterized in that: At least two air inlet pipes (20) are detachably arranged on the mixing pipe (10).

7. The material mixing reaction device according to any one of claims 1 to 6, characterized in that: The mixing tube (10) further comprises a gradually expanding section (14), the inlet of the gradually expanding section (14) being connected to the outlet of the gradually contracting section (13), the outlet of the gradually expanding section (14) being connected to the mixing outlet (12), and the cross-sectional dimensions of the gradually expanding section (14) gradually increasing in a direction from the liquid inlet (11) to the mixing outlet (12).

8. The material mixing reaction device according to claim 7, characterized in that: The mixing tube (10) further comprises a first straight pipe section (15), the inlet of the first straight pipe section (15) being connected to the outlet of the gradually narrowing section (13), and the outlet of the first straight pipe section (15) being connected to the inlet of the gradually expanding section (14).

9. The material mixing reaction device according to any one of claims 1 to 6, characterized in that: The material mixing reaction device further comprises an air intake valve and a first flow meter arranged on the air intake pipe (20); and / or, The material mixing reaction device further comprises a liquid inlet valve and a second flow meter arranged at the liquid inlet (11).

10. The material mixing reaction device according to any one of claims 1 to 6, characterized in that: The material mixing reaction device also includes a sampling piece arranged at the mixing outlet (12).

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