Gas distributor, stirring reaction equipment and gas distribution method

Abstract

The invention relates to a gas distributor, stirring reaction equipment and a gas distribution method. The gas distributor comprises a gas inlet pipe, a gas distribution ring pipe and m spray pipes, the other end of the gas inlet pipe is communicated with the gas distribution ring pipe, the m spray pipes are arranged on the gas distribution ring pipe at intervals and are communicated with the gas distribution ring pipe, and the m spray pipes are used for surrounding stirring blades of the stirring reaction equipment; the outlet of the spray pipe is positioned between the stirring blade and the bottom wall surface of the reaction kettle of the stirring reaction equipment, and is adjacent to or positioned on the extension surface of the edge of the stirring blade in the axial direction of the stirring blade. The gas distributor is simple in structure, does not interfere with a stirrer, does not affect the rotation stability of stirring blades, has a good mixing effect of gas and ore pulp, can improve the mass transfer rate of the gas-liquid surface, and enables mass transfer or chemical reaction to be more sufficient, so that the gas utilization rate is improved, the use cost of valuable gas is saved, and the gas distributor is suitable for industrial production. Meanwhile, the production efficiency of the stirring reaction equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stirring reaction equipment in the metallurgical industry, and in particular to a gas distributor, stirring reaction equipment and a gas distribution method. Background Art

[0002] Vertical atmospheric stirring reactors are widely used in various processes of non-ferrous metal hydrometallurgy, such as batching, slurrying, leaching, crystallization, dissolution, reduction, decomposition and extraction. For example, a large lead-zinc smelter with an annual output of 100,000 t / a electrolytic zinc can be equipped with more than 80 stirring devices in the main process. In order to strengthen the stirring and mixing reaction process, the process usually requires the introduction of reaction gases such as oxygen, compressed air and sulfur dioxide.

[0003] In the related art, according to the position of the air inlet pipe, the commonly used structural types of gas distribution in the vertical stirred reactor are divided into three schemes: direct injection from the top cover, introduction from the bottom side, and air intake from the center of the stirring shaft. For the structure of direct injection from the top cover, the stirring and dispersion effect of the blades is poor, and the gas is easy to directly emerge from the liquid surface without complete reaction, and the utilization rate of the valuable gas is low. At the same time, due to the uneven dispersion of the gas, the stability of the rotation of the stirring blades is affected, causing the stirring transmission device to shake, thereby affecting the service life of the equipment. For the structure of introducing gas from the bottom side, since the air inlet pipe is completely immersed in the liquid surface and the jet port is upward, it is easy to cause the slurry to enter the pipeline and deposit when the gas volume is reduced or stopped, and the bottom horizontal nozzle is easy to accumulate materials and cause pipeline blockage, which increases the difficulty of cleaning. In addition, due to the constraints of the customary layout scheme of the workshop matching pipelines and platforms, the external pipe of the bottom side air inlet pipe is easy to interfere with other configuration structures in the plant area. For the structure of air intake in the center of the stirring shaft, a transmission device and stirring shaft with a special shaft air intake must be used, and the investment cost and maintenance and replacement costs are relatively high. Moreover, it is impossible to adjust the size of the jet port or replace the jet pipe when the air intake volume changes, and the system is not adaptable to working conditions. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a gas distributor with a simple structure, which does not affect the smoothness of the rotation of the stirring blades, has a good mixing effect of gas and slurry, can increase the mass transfer rate of the gas-liquid surface, and make the mass transfer or chemical reaction more complete, thereby improving the gas utilization rate, saving the cost of using valuable gases, and at the same time improving the production efficiency of the stirring reaction equipment.

[0006] An embodiment of the present invention provides a stirring reaction device.

[0007] An embodiment of the present invention provides a gas distribution method.

[0008] According to an embodiment of the present invention, a gas distributor comprises an air inlet pipe, an air distribution ring pipe and m nozzles, one end of the air inlet pipe is used to connect to a gas source, the other end of the air inlet pipe is connected to the air distribution ring pipe, the m nozzles are arranged at intervals on the air distribution ring pipe and are connected to the air distribution ring pipe, the m nozzles are used to surround a stirring blade of a stirring reaction equipment, in the axial direction of the stirring blade, the outlet of the nozzle is located between the stirring blade and the bottom wall surface of the reactor of the stirring reaction equipment, and the outlet of the nozzle is adjacent to or located on the axial extension surface of the edge of the stirring blade of the stirring blade.

[0009] The gas distributor of the embodiment of the present invention adopts a gas distribution method of upper air intake and lower multi-point air injection, and has a simple structure. The installation of the pipeline does not require excessive modification of the reactor, does not interfere with the agitator, and does not affect the smooth rotation of the agitator blades. In addition, the gas and the slurry are mixed well, which can increase the mass transfer rate of the gas-liquid surface, making the mass transfer or chemical reaction more sufficient, thereby improving the gas utilization rate, saving the cost of using valuable gases, and improving the production efficiency of the stirring reaction equipment.

[0010] In some embodiments, the nozzle includes a first pipe segment and a second pipe segment, one end of the first pipe segment is connected to the air distribution ring pipe, the extension direction of the first pipe segment is parallel to the axial direction of the stirring blade, the other end of the first pipe segment is connected to one end of the second pipe segment, at least one of the first pipe segment and the second pipe segment is opposite to the stirring blade in the radial direction of the stirring blade, the second pipe segment extends toward the stirring blade, the other end of the second pipe segment is spaced apart from the stirring blade, and the other end of the second pipe segment is adjacent to or located at the edge of the stirring blade in the axial extension surface of the stirring blade.

[0011] In some embodiments, the nozzle further includes a third pipe segment, one end of the third pipe segment is connected to the other end of the second pipe segment, the third pipe segment is parallel to the first pipe segment, and the other end of the third pipe segment faces away from the second pipe segment.

[0012] In some embodiments, the gas distributor further includes connecting pipes and pipe plugs, the connecting pipes having n numbers, n≥m, the n connecting pipes are arranged at intervals on the gas distribution ring pipe and are connected to the gas distribution ring pipe, wherein m connecting pipes are detachably connected to the nozzles, and x connecting pipes are detachably connected to the pipe plugs to close the connecting pipes, x=nm.

[0013] In some embodiments, the connecting pipe is provided with an external thread, and the gas distributor further includes a fastening ring, one end of the fastening ring is sleeved on the nozzle, and the other end of the fastening ring is provided with a first internal thread, and the fastening ring is connected to the connecting pipe through the cooperation between the first internal thread and the external thread; the pipe plug is provided with a matching groove, and the matching groove is provided with a second internal thread, and the pipe plug is connected to the connecting pipe through the cooperation between the second internal thread and the external thread.

[0014] In some embodiments, the gas distributor further includes a gasket, the gasket is provided between the connecting pipe and the nozzle, and the gasket is provided between the connecting pipe and the pipe plug.

[0015] In some embodiments, a first fixing ring is provided on the connecting pipe, and the external thread is provided on the first fixing ring; a second fixing ring is provided on the nozzle, and a ring groove is provided on the second fixing ring; a limiting convex ring is provided on one end of the fastening ring, and the limiting convex ring is sleeved on the ring groove.

[0016] In some embodiments, the gas distributor further includes a supporting column, wherein the supporting column has a plurality of columns, one end of the supporting column is connected to the gas distribution ring tube, the supporting column is opposite to the stirring blade in the radial direction of the stirring blade, and the other end of the supporting column is used to connect to the reactor of the stirring reaction equipment, and the plurality of supporting columns are arranged at intervals.

[0017] The stirring reaction equipment of the embodiment of the present invention comprises a reactor, an agitator and a gas distributor, wherein the agitator comprises a stirring blade, the stirring blade is located in the reactor, the air inlet pipe is passed through the reactor, and m nozzles surround the stirring blade.

[0018] The stirring blades of the stirring reaction equipment in the embodiment of the present invention rotate smoothly, and the mixing effect of gas and slurry is good, which can improve the mass transfer rate of the gas-liquid surface, make the mass transfer or chemical reaction more complete, thereby improving the gas utilization rate, saving the cost of using valuable gas, and improving the production efficiency of the stirring reaction equipment.

[0019] In some embodiments, the stirring reaction equipment further includes a baffle, and the baffle is arranged on the inner wall surface of the reactor.

[0020] In the gas distribution method of the embodiment of the present invention, according to the gas distributor, one end of the air inlet pipe is connected to the gas source, the gas enters the air distribution ring pipe through the air inlet pipe, and then is ejected from the outlets of the plurality of nozzles.

[0021] The gas distribution method of the embodiment of the present invention adopts a gas distribution method of upper air intake and lower multi-point air injection, which does not interfere with the agitator and does not affect the smoothness of the rotation of the agitator blades. In addition, the gas and the slurry are mixed well, which can increase the mass transfer rate of the gas-liquid surface, making the mass transfer or chemical reaction more sufficient, thereby improving the gas utilization rate, saving the cost of using valuable gases, and improving the production efficiency of the stirring reaction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a gas distributor according to an embodiment of the present invention;

[0023] Figure 2 This is one of the structural schematic diagrams of the stirring reaction equipment according to an embodiment of the present invention;

[0024] Figure 3 This is the second structural schematic diagram of the stirring reaction equipment according to the embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a connecting pipe, a nozzle and a fastening ring according to an embodiment of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a connecting pipe and a pipe plug according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Stirring reaction equipment 1000;

[0029] Gas distributor 100;

[0030] Inlet pipe 1, air distribution ring pipe 2, nozzle 3, first pipe section 301, second pipe section 302, third pipe section 303, second fixing ring 31, connecting pipe 4, first fixing ring 41, pipe plug 5, fastening ring 6, limiting convex ring 61, supporting column 7, gasket 8;

[0031] A stirring blade 200 , a reaction kettle 300 , a stirring shaft 400 , and a baffle 500 . DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] Please refer to the attached Figures 1 to 5 , the gas distributor 100, the stirring reaction equipment 1000 and the gas distribution method according to the embodiment of the present invention are described in detail.

[0034] The stirring reaction equipment 1000 according to the embodiment of the present invention includes a reaction kettle 300 , a stirrer and a gas distributor 100 .

[0035] The stirring device includes a stirring blade 200, and the stirring blade 200 is located in the reactor 300. The stirrer also has a stirring shaft 400, one end of which is rotatably inserted into the reactor 300, and the stirring blade 200 is arranged on the other end of the stirring shaft 400.

[0036] The gas distributor 100 of the embodiment of the present invention comprises an air inlet pipe 1, an air distribution ring pipe 2 and m nozzles 3. The air inlet pipe 1 is installed on the reactor 300, one end of the air inlet pipe 1 is used to connect to the gas source, and the other end of the air inlet pipe 1 is connected to the air distribution ring pipe 2. The m nozzles 3 are arranged on the air distribution ring pipe 2 at intervals and connected to the air distribution ring pipe 2. The m nozzles 3 surround the stirring blade 200. In the axial direction (for example, Figure 2 In the vertical direction in the reactor, the outlet of the nozzle 3 is located between the stirring blade 200 and the bottom wall of the reactor 300. The outlet of the nozzle 3 is adjacent to or located at the extension surface of the edge of the stirring blade 200 in the axial direction of the stirring blade 200.

[0037] According to the gas distribution method of the embodiment of the present invention, according to the gas distributor 100 of the embodiment of the present invention, one end of the air inlet pipe 1 is connected to the gas source, the gas enters the air distribution ring pipe 2 through the air inlet pipe 1, and then is ejected from the outlets of the multiple nozzles 3.

[0038] When the stirring reaction device 1000 of the embodiment of the present invention is in use, Figure 2 As shown, the stirring shaft 400 extends in the up-down direction, the axial direction of the stirring blade 200 is the same as the up-down direction, the reactor 300 stores slurry, the liquid level of the slurry submerges the stirring blade 200, and the end (upper end) of the air inlet pipe 1 is connected to the gas source, the gas enters the air distribution ring pipe 2 from the air inlet pipe 1, and then flows to the multiple nozzles 3 and is ejected from the outlet of the nozzle 3.

[0039] The gas distributor 100 of the embodiment of the present invention introduces gas through the air inlet pipe 1, which is the same as the single-tube upper air intake method of the reaction equipment in the related art, and does not increase the number of external pipes of the reactor 300. The gas is ejected from the outlets of the m nozzles 3 after passing through the gas distribution ring pipe 2. On the one hand, the multiple nozzles 3 surrounding the stirring blades 200 do not affect the stability of the rotation of the stirring blades 200, thereby ensuring the stirring effect of the stirring blades 200 on the slurry; on the other hand, the m nozzles 3 form multi-point (i.e., m points) jets, and multi-point jets make the gas more dispersed in the circumferential direction of the stirring blades 200, so that the gas is more evenly distributed in the slurry, thereby increasing the contact area between the gas and the slurry, and then increasing the mass transfer rate of the gas-liquid surface, promoting mass transfer or chemical reactions; the third party In the axial direction of the stirring blade 200 (i.e., in the up-down direction), the outlet of the nozzle 3 is located between the stirring blade 200 and the bottom wall of the reactor 300, so the outlet of the nozzle 3 extends deeper into the slurry and is located below the stirring blade 200, which is conducive to increasing the residence time of the gas in the slurry, thereby increasing the contact time between the gas and the slurry, and then increasing the mass transfer rate of the gas-liquid surface, promoting mass transfer or chemical reaction; fourthly, the outlet of the nozzle 3 is adjacent to or located at the extension surface of the edge of the stirring blade 200 in the axial direction of the stirring blade 200, see Figure 2 and Figure 3 The outlet of the nozzle 3 is adjacent to or directly below the edge of the stirring blade 200. Since the linear velocity of the blade tip of the stirring blade 200 (that is, the edge of the stirring blade 200) is the largest, the outlet of the nozzle 3 sprays gas at the maximum stirring speed, so that the gas can be quickly dispersed in the slurry and form a larger contact area with the slurry, thereby achieving rapid mixing of the gas and the slurry and participating in the reaction, and the bubbles formed in the slurry are also easily broken up, thereby increasing the mass transfer rate of the gas-liquid surface and promoting mass transfer or chemical reactions.

[0040] Therefore, the gas distributor 100 of the embodiment of the present invention adopts a gas distribution method of upper air intake and lower multi-point air injection, and has a simple structure. The installation of the pipeline does not require excessive modifications to the reactor 300, does not interfere with the agitator, and does not affect the smooth rotation of the stirring blade 200. In addition, the gas and the slurry have a good mixing effect, which can increase the mass transfer rate of the gas-liquid surface, making the mass transfer or chemical reaction more complete, thereby improving the gas utilization rate, saving the cost of using valuable gases, and improving the production efficiency of the stirring reaction equipment.

[0041] Specifically, the air inlet pipe 1 extends along the axial direction of the stirring blade 200 , and the lower end of the air inlet pipe 1 is connected to the air distribution ring pipe 2 through a flange.

[0042] The air distribution ring pipe 2 includes four sections of annular pipes, which are connected in sequence by flanges and spliced ​​to form a closed annular shape. In other words, the air distribution ring pipe 2 is annular, and the central axis of the stirring shaft 400 is collinear with the central axis of the air distribution ring pipe 2. Then, m nozzles 3 are distributed in an annular shape.

[0043] The number of segments of the air distribution ring 4 can be flexibly adjusted according to the actual working conditions. The structure of the air distribution ring 4 connected in sections by flanges facilitates the assembly and disassembly of the gas distributor 100 of the embodiment of the present invention. After the air distribution ring 4 is segmented, the inside of the equipment can be entered and exited through the manhole on the side wall of the reactor 300, and the top cover of the reactor 300 does not need to be removed during replacement or maintenance.

[0044] Furthermore, m nozzles 3 are arranged at equal angles on the gas distribution ring pipe 2, so that the m nozzles 3 are evenly distributed on the gas distribution ring pipe 2, so that the gas ejected from the outlets of the m nozzles 3 is more evenly distributed in the slurry, which is beneficial to further improve the mass transfer rate of the gas-liquid surface, make the mass transfer or chemical reaction more sufficient, further improve the utilization rate of the gas, and further improve the production efficiency of the stirring reaction equipment.

[0045] In some embodiments, the gas distributor 100 further includes a connecting pipe 4 and a pipe plug 5, wherein the connecting pipe 4 has n, n ≥ m, and the n connecting pipes 4 are arranged at intervals on the gas distribution ring pipe 2 and are connected to the gas distribution ring pipe 2, wherein m connecting pipes 4 are detachably connected to the nozzles 3, and x connecting pipes 4 are detachably connected to the connecting pipes 4 to close the connecting pipes 4, x = nm, x ≥ 0. The gas distributor 100 is detachably connected to the nozzles 3 through the connecting pipes 4 and the detachable connection between the connecting pipes 4 and the pipe plug 5, so that the number of nozzles 3 can be adjusted, and the number and position of the nozzles 3 can be flexibly adjusted according to the change in the demand for the intake volume, and the connecting pipes 4 without the nozzles 3 can be closed by the pipe plug 5, thereby ensuring that the gas is ejected through the nozzles 3.

[0046] Specifically, n connecting pipes 4 are arranged on the air distribution ring pipe 2 at equal angles.

[0047] Preferably, m is a multiple of four, so as to facilitate adjustment of the position and number of the nozzles 3 .

[0048] exist Figure 2 and Figure 3 In the illustrated embodiment, the number of the connecting pipes 4 is 16, ie, n=16, the angle between two adjacent connecting pipes 4 is 22.5°, the number of the nozzles 3 is 16, ie, m=16, and x=0.

[0049] In some embodiments, the connecting pipe 4 is provided with an external thread, and the gas distributor 100 further includes a fastening ring 6, one end (lower end) of the fastening ring 6 is sleeved on the nozzle 3, and the other end (upper end) of the fastening ring 6 is provided with a first internal thread, and the fastening ring 6 is connected to the connecting pipe 4 through the cooperation of the first internal thread and the external thread. The fastening ring 6 is threadedly connected to the connecting pipe 4, and the connection method is simple and easy to operate, thereby facilitating the installation and removal of the nozzle 3 on the connecting pipe 4.

[0050] The pipe plug 5 is provided with a matching groove, which is a circular groove, and a second internal thread is provided in the matching groove. The pipe plug 5 is connected to the connecting pipe 4 through the matching of the second internal thread and the external thread. The pipe plug 5 is threadedly connected to the connecting pipe 4, and the connection method is simple and easy to operate, so that the pipe plug 5 is easy to install and remove on the connecting pipe 4, and then the convenience of adjusting the number and position of the nozzles 3 is further improved.

[0051] In some embodiments, the connecting pipe 4 is provided with a first fixing ring 41, and the first fixing ring 41 is provided with an external thread. The nozzle 3 is provided with a second fixing ring 31, and the second fixing ring 31 is provided with an annular groove. The end of the fastening ring 6 is provided with a limiting convex ring 61, and the limiting convex ring 61 is sleeved on the annular groove, and the limiting convex ring 61 can rotate relative to the second fixing ring 31.

[0052] like Figure 4 As shown, the lower end of the fastening ring 6 is provided with a limiting convex ring 61. When the nozzle 3 needs to be installed on the connecting pipe 4, the lower end (outlet end) of the nozzle 3 is first inserted into the fastening ring 6, and the fastening ring 6 is moved from the lower end of the nozzle 3 to the second fixing ring 31 at the upper end of the nozzle 3, and the limiting convex ring 61 is sleeved on the ring groove of the first fixing ring 41, and then the fastening ring 6 is sleeved on the first fixing ring 41 of the connecting pipe 4, and the fastening ring 6 is rotated to make the first internal thread engage with the external thread, and the fastening ring 6 is tightened, so as to fix the nozzle 3, that is, the connection between the nozzle 3 and the connecting pipe 4 is completed. When the nozzle 3 needs to be removed, the fastening ring 6 is unscrewed from the connecting pipe 4, and then the nozzle 3 can be separated from the connecting pipe 4.

[0053] Specifically, the first fixing ring 41 is fixed on the connecting pipe 4 by welding, and the second fixing ring 31 is fixed on the nozzle 3 by welding. The outer diameter of the second fixing ring 31 is smaller than the outer diameter of the first fixing ring 41 .

[0054] In some embodiments, the gas distributor 100 further includes a gasket 8 .

[0055] A gasket 8 is provided between the connecting pipe 4 and the nozzle 3. Specifically, Figure 4As shown, a gasket 8 is provided between the first fixing ring 41 of the connecting pipe 4 and the second fixing ring 31 of the nozzle 3. When the fastening ring 6 is tightened, the lower side of the gasket 8 abuts against the second fixing ring 31, and the upper side of the gasket 8 abuts against the first fixing ring 41. The gasket 8 has a certain elasticity and friction force, which can avoid hard collision between the first fixing ring 41 and the second fixing ring 31, and ensure the stability of the second fixing ring 31 and the nozzle 3 when the fastening ring 6 is tightened.

[0056] A gasket 8 is provided between the connecting pipe 4 and the pipe plug 5. Specifically, Figure 5 As shown, a gasket 8 is provided between the first fixing ring 41 and the pipe plug 5 , the upper side of the gasket 8 abuts against the first fixing ring 41 , and the lower side of the gasket 8 abuts against the pipe plug 5 , thereby ensuring the stability of the connection between the pipe plug 5 and the first fixing ring 41 .

[0057] In some embodiments, the nozzle 3 includes a first pipe section 301 and a second pipe section 302. One end (upper end) of the first pipe section 301 is connected to the air distribution ring pipe 2, the extension direction of the first pipe section 301 is parallel to the axial direction of the stirring blade 200, and the other end (lower end) of the first pipe section 301 is connected to one end (upper end) of the second pipe section 302. Specifically, a second fixing ring 31 is provided at the upper end of the first pipe section 301. At least one of the first pipe section 301 and the second pipe section 302 is opposite to the stirring blade 200 in the radial direction of the stirring blade 200, the second pipe section 302 extends toward the stirring blade 200, and the other end (lower end) of the second pipe section 302 is spaced apart from the stirring blade 200. In the axial direction of the stirring blade 200, the other end of the second pipe section 302 is adjacent to or located at the extension surface of the edge of the stirring blade 200 in the axial direction of the stirring blade 200. The second pipe section 302 of the nozzle 3 is bent relative to the first pipe section 301, while ensuring that the other end of the second pipe section 302 is adjacent to or directly below the edge of the stirring blade 200, and at the same time ensuring that there is a certain distance between the first pipe section 301 and the stirring blade 200, thereby avoiding interference between the nozzle 3 and the stirring blade 200, and also facilitating the installation and disassembly of the nozzle 3 in the reactor 300, thereby improving the convenience of adjusting the number and position of the nozzle 3.

[0058] In some embodiments, the nozzle 3 further includes a third pipe segment 303, one end (upper end) of the third pipe segment 303 is connected to the other end of the second pipe segment 302, the third pipe segment 303 is parallel to the first pipe segment 301, the other end (lower end) of the third pipe segment 303 is facing away from the second pipe segment 302, and the other end of the third end forms the outlet of the nozzle 3. Then, when the gas is ejected from the other end of the third pipe segment 303, it is downward, and the gas injection direction is tangent to the rotation direction of the stirring blade 200, which can avoid the gas from gathering in the same direction, and is more conducive to the dispersion of the gas in the slurry, and then it is conducive to further improving the mass transfer rate of the gas-liquid surface, making the mass transfer or chemical reaction more sufficient, further improving the utilization rate of the gas, and further improving the production efficiency of the stirring reaction equipment.

[0059] In the process of installing the nozzle 3 to the connecting pipe 4, the circumferential angle of the nozzle 3 can be adjusted according to the working condition requirements and the type of the stirring blade 200. Before tightening the fastening ring 6, the position of the nozzle 3 in the circumferential direction can be adjusted by rotating the nozzle 3, the direction of the second pipe section 302 can be adjusted, and the position of the outlet of the third pipe section 303 (i.e., the outlet of the nozzle 3) can be adjusted. After the adjustment, tighten the fastening ring 6. In this way, the circumferential angle of the nozzle 3 can be flexibly adjusted, and the position of the second pipe section relative to the stirring blade can be changed, so as to meet the requirements of different stirring speeds and stirring blade types.

[0060] like Figure 4 As shown, the outlet of the third pipe section 303 (i.e., the outlet of the nozzle 3) is located on the extension surface of the edge of the stirring blade 200 in the axial direction of the stirring blade 200. The projection surface of the second pipe section 302 along the axial direction of the stirring blade 200 on the radial section of the stirring blade 200 extends in the radial direction of the stirring blade 200.

[0061] In addition, according to the type of the stirring blade 200, the nozzle 3 with different bending angles (the bending angle of the second pipe section 302 relative to the first pipe section 301) is manufactured without replacing the air inlet pipe and the air distribution ring pipe of the gas distributor, thereby increasing the applicability of the gas distributor 100 of the embodiment of the present invention to different stirring blades and improving the utilization rate of the gas distributor 100.

[0062] In some embodiments, the gas distributor 100 further includes a support column 7, and the support column 7 has multiple support columns. One end (upper end) of the support column 7 is connected to the gas distribution ring tube 2, the support column 7 is opposite to the stirring blade 200 in the radial direction of the stirring blade 200, and the other end (lower end) of the support column 7 is connected to the reactor 300 of the stirring reaction equipment 1000, and multiple support columns 7 are arranged at intervals. The support column 7 can not only provide stable support for the air distribution ring pipe 2, ensure the stability of the air distribution ring pipe 2 and the nozzle 3 under the stirring state, but also change the flow pattern of the slurry medium, improve the flow state of the slurry inside the reactor 300, and better eliminate the vortex phenomenon of the medium inside the reactor 300 without increasing the power and speed of the agitator (when the stirring speed is high, the liquid moves with the rotation direction of the blade, and the medium in the middle part of the stirring equipment rushes to the inner wall of the reactor and rises under the action of centrifugal force, and the liquid level in the center drops to form a vortex. The phenomenon of the vortex zone is called the vortex phenomenon). At the same time, the stirring liquid flow is used to shear the bubbles, further increasing the gas dispersion effect, reducing the consumption of useless power of the agitator, improving the stirring effect, and having a good energy-saving effect.

[0063] Specifically, the support column 7 is connected to the air distribution ring pipe 2 through a flange. Figure 2 In the illustrated embodiment, four support columns 7 are provided, and the number of the support columns 7 can be adjusted according to the inner diameter of the reactor 300 , the air intake, the internal pressure of the reactor 300 , and the weight of the air distribution ring pipe 2 and the nozzle 3 .

[0064] In some embodiments, the stirring reaction device 1000 further includes a baffle 500, which is disposed on the inner wall surface of the reactor 300. The baffle 500 can change the flow pattern of the slurry medium, improve the flow state of the slurry inside the reactor 300, and work together with the support column 7 to further increase the gas dispersion effect, reduce the consumption of useless power of the stirrer, and improve the stirring effect, which has a good energy-saving effect.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A gas distributor (100), characterized in that: The invention comprises an air inlet pipe (1), an air distribution ring pipe (2) and m nozzles (3), wherein one end of the air inlet pipe (1) is used to connect to an air source, and the other end of the air inlet pipe (1) is connected to the air distribution ring pipe (2); the m nozzles (3) are arranged at intervals on the air distribution ring pipe (2) and are connected to the air distribution ring pipe (2); the m nozzles (3) are used to surround a stirring blade of a stirring reaction device (1000); in the axial direction of the stirring blade (200), an outlet of the nozzle (3) is located between the stirring blade (200) and a bottom wall surface of a reactor (300) of the stirring reaction device (1000); and the outlet of the nozzle (3) is adjacent to or located on an extension surface of the edge of the stirring blade (200) in the axial direction of the stirring blade (200).

2. The gas distributor (100) according to claim 1, characterized in that: The nozzle (3) comprises a first pipe section (301) and a second pipe section (302), one end of the first pipe section (301) is connected to the air distribution ring pipe (2), the extension direction of the first pipe section (301) is parallel to the axial direction of the stirring blade (200), the other end of the first pipe section (301) is connected to one end of the second pipe section (302), at least one of the first pipe section (301) and the second pipe section (302) is opposite to the stirring blade (200) in the radial direction of the stirring blade (200), the second pipe section (302) extends toward the stirring blade (200), the other end of the second pipe section (302) is spaced apart from the stirring blade (200), and the other end of the second pipe section (302) is adjacent to or located at the extension surface of the edge of the stirring blade (200) in the axial direction of the stirring blade (200).

3. The gas distributor (100) according to claim 2, characterized in that: The nozzle (3) further comprises a third pipe section (303), one end of the third pipe section (303) is connected to the other end of the second pipe section (302), the third pipe section (303) is parallel to the first pipe section (301), and the other end of the third pipe section (303) faces away from the second pipe section (302).

4. The gas distributor (100) according to claim 1, characterized in that: It further comprises connecting pipes (4) and pipe plugs (5), wherein the connecting pipes (4) have n numbers, n≥m, and the n connecting pipes (4) are arranged at intervals on the air distribution ring pipe (2) and are connected to the air distribution ring pipe (2), wherein m connecting pipes (4) are detachably connected to the nozzle (3), and x connecting pipes (4) are detachably connected to the pipe plugs (5) to seal the connecting pipes (4), and x=nm.

5. The gas distributor (100) according to claim 4, characterized in that: The connecting pipe (4) is provided with an external thread, and the gas distributor (100) further includes a fastening ring (6), one end of the fastening ring (6) is sleeved on the nozzle (3), and the other end of the fastening ring (6) is provided with a first internal thread, and the fastening ring (6) is connected to the connecting pipe (4) through the cooperation of the first internal thread and the external thread; the pipe plug (5) is provided with a matching groove, and the matching groove is provided with a second internal thread, and the pipe plug (5) is connected to the connecting pipe (4) through the cooperation of the second internal thread and the external thread.

6. The gas distributor (100) according to claim 5, characterized in that: It further comprises a gasket (8), wherein the gasket (8) is arranged between the connecting pipe (4) and the nozzle (3), and the gasket (8) is arranged between the connecting pipe (4) and the pipe plug (5); And / or, the connecting pipe (4) is provided with a first fixing ring (41), the first fixing ring (41) is provided with the external thread; the nozzle (3) is provided with a second fixing ring (31), the second fixing ring (31) is provided with an annular groove, and the one end of the fastening ring (6) is provided with a limiting convex ring (61), and the limiting convex ring (61) is sleeved on the annular groove.

7. The gas distributor (100) according to claim 1, characterized in that: It further comprises a supporting column (7), wherein the supporting column (7) is provided in plurality, one end of the supporting column (7) is connected to the air distribution ring tube (2), the supporting column (7) is opposite to the stirring blade (200) in the radial direction of the stirring blade (200), and the other end of the supporting column (7) is used to connect to the reactor (300) of the stirring reaction equipment (1000), and the plurality of supporting columns (7) are arranged at intervals.

8. A stirring reaction device (1000), characterized in that: It comprises a reactor (300), an agitator and a gas distributor (100), wherein the agitator is a stirring blade (200), and the stirring blade (200) is located in the reactor (300). The gas distributor (100) is the gas distributor (100) according to any one of claims 1 to 7, and the air inlet pipe (1) is passed through the reactor (300). m nozzles (3) surround the stirring blade.

9. The stirring reaction device (1000) according to claim 8, characterized in that: It further comprises a baffle (500), wherein the baffle (500) is arranged on the inner wall surface of the reaction kettle (300).

10. A method for distributing air, characterized in that: According to the gas distributor (100) according to any one of claims 1 to 7, one end of the air inlet pipe (1) is connected to a gas source, and the gas enters the air distribution ring pipe (2) through the air inlet pipe (1), and then is ejected from the outlets of the plurality of nozzles (3).

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