Gas-liquid double-phase reaction kettle

Abstract

The utility model relates to the technical field of reaction kettle equipment, and provides a gas-liquid two-phase reaction kettle, which comprises a kettle body, a liquid feeding hole and a discharge hole, the liquid feeding hole is positioned above the kettle body, and the discharge hole is positioned at the bottom of the kettle body; the hollow rotating shaft is rotationally arranged on the kettle body, one end of the rotating shaft is located outside the kettle body and connected with a gas pipeline, the other end of the rotating shaft is located in the kettle body and close to the bottom of the kettle body, and the rotating shaft in the kettle body is provided with vent holes used for filling gas raw materials into the kettle body; the one-way valve is arranged at one end, positioned in the kettle body, of the vent hole and is used for preventing liquid in the kettle body from entering the vent hole; the two stirring paddles are arranged on the rotating shaft, are positioned in the kettle body, are sequentially distributed along the axis direction of the rotating shaft, and are turbine type four-blade inclined blades. According to the technical scheme, the problem that liquid flows back to a gas pipeline in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel equipment technology, specifically to a gas-liquid two-phase reaction vessel. Background Technology

[0002] In the chemical industry and related fields, chemical reactions often need to be carried out under specific conditions and in specific equipment. Gas-liquid two-phase reactions are a common and important type of reaction, involving the interaction between substances in two phases: gas and liquid. To effectively facilitate gas-liquid two-phase reactions, gas-liquid two-phase reactors have been developed.

[0003] To increase gas-liquid mixing efficiency, existing gas-liquid two-phase reactors typically incorporate nozzles at the bottom of the agitator, followed by a propeller-driven stirring slurry to facilitate convective transport of the liquid and gas streams. However, in practical applications, the high-speed rotation of the agitator allows liquid to easily enter the gas channels, leading to difficulties in cleaning and long-term liquid residue buildup and blockage. Utility Model Content

[0004] This invention proposes a gas-liquid two-phase reactor, which solves the problem of liquid reflux gas pipeline in related technologies.

[0005] The technical solution of this utility model is as follows:

[0006] A gas-liquid two-phase reactor, comprising:

[0007] The vessel body has a liquid inlet and a discharge outlet. The liquid inlet is located above the vessel body, and the discharge outlet is located at the bottom of the vessel body. The liquid inlet is a tangential inlet.

[0008] A rotating shaft is rotatably mounted on the vessel body. One end of the rotating shaft is located outside the vessel body, and the other end is located inside the vessel body. The end of the rotating shaft located inside the vessel body is close to the bottom of the vessel body. The rotating shaft has a vent hole, and the axis of the vent hole coincides with the axis of the rotating shaft. The vent hole is used to fill the vessel body with gaseous raw materials.

[0009] A one-way valve is provided at one end of the vent located inside the vessel body. The one-way valve is used to prevent liquid inside the vessel body from entering the vent.

[0010] There are two stirring paddles, both of which are mounted on the rotating shaft. Both stirring paddles are located inside the vessel body and are distributed sequentially along the axis of the rotating shaft. Each stirring paddle is a turbine-type four-bladed oblique blade.

[0011] Optionally, it also includes:

[0012] The mounting sleeve is rotatably mounted on the rotating shaft. The rotation axis of the mounting sleeve is collinear with the axis of the rotating shaft, and the mounting sleeve is located at the end of the rotating shaft outside the vessel body. One end of the mounting sleeve extends into the vent hole, and the other end is located outside the vent hole. The mounting sleeve is used to connect to an external pipeline.

[0013] Optionally, the vessel body further includes a catalyst inlet and an auxiliary material inlet, and further includes:

[0014] A filter plate is disposed inside the reactor body, the filter plate being located between the stirring paddle and the discharge port, and the catalyst inlet and the auxiliary material inlet being located above the filter plate.

[0015] Optionally, the filter plate is conical, with the apex of the filter plate facing the top of the vessel body.

[0016] Optionally, it also includes:

[0017] A gas-liquid separation device is installed on one side of the reactor body;

[0018] The first connecting pipe has its two ends connected to the discharge port and the gas-liquid separation device, respectively. The gas-liquid separation device is used to separate the gas in the liquid flowing out of the discharge port.

[0019] Optionally, the gas-liquid separation device includes:

[0020] The container has a holding space, and the container also has a gas outlet and a liquid outlet, with the gas outlet located at the top of the container;

[0021] A partition is disposed within the holding space, the partition being used to divide the holding space into a first space and a second space that are connected from above, the two ends of the first connecting pipe being connected to the discharge port and the first space respectively, and the liquid outlet being located in the second space.

[0022] Optionally, the housing further includes a sampling port located in the second space, the sampling port being used to place a sampler, the vessel body further includes a reflux port, the first connecting pipe has a first inlet, a first outlet, and a second outlet, the first inlet being connected to the discharge port, the first outlet and the second outlet being connected to the first space and the reflux port respectively, and further includes:

[0023] The control valve has two valves, which are respectively located at the first outlet and the second outlet. The two control valves are used to open or close the first outlet and the second outlet, respectively.

[0024] Optionally, it also includes:

[0025] A jacket is fitted onto the vessel body, and the jacket has a heat exchange medium inlet and a heat exchange medium outlet.

[0026] The working principle and beneficial effects of this utility model are as follows:

[0027] In this invention, the vessel body can be made of stainless steel, possessing excellent corrosion resistance and strength to adapt to various chemical reaction environments. The size and shape of the liquid inlet and outlet should be designed according to the actual material flow rate and discharge requirements, and equipped with corresponding valves for control. The rotating shaft is mounted on the vessel body via bearings to achieve stable rotation. A motor or other drive device can be connected to the end of the rotating shaft located outside the vessel body to drive the shaft's rotation. The rotation axis of the drive device is not collinear with the rotation axis of the rotating shaft. The drive device drives the rotating shaft from one side, for example, by gear transmission, chain transmission, belt transmission, etc. The one-way valve can be a ball-type one-way valve or a gravity-type one-way valve, fixed to the end of the vessel body with the vent located inside by welding or threaded connection, ensuring secure installation and good sealing. The agitator and shaft can be connected by welding or bolting. The agitator blades are configured as a turbine-type four-bladed inclined blade. This turbine-type blade design allows the gas discharged from the one-way valve to rapidly diffuse along with the liquid, quickly mixing the liquid and gas at the bottom of the agitator. Simultaneously, the gas-liquid mixture diffuses to the inner wall of the vessel, then moves upward along the inner wall and downward along the outer wall of the shaft, forming a strong axial circulating flow. Meanwhile, the liquid inlet can feed tangentially, creating turbulence within the vessel and accelerating gas-liquid mixing.

[0028] By installing a one-way valve at the end of the vent hole of the rotating shaft, the backflow of liquid inside the vessel into the gas channel is effectively prevented, avoiding the problem of liquid residue accumulation and blockage, reducing the difficulty and frequency of cleaning, and lowering equipment maintenance costs. The turbine-type four-bladed inclined impeller provides a more efficient stirring effect, ensuring thorough gas-liquid mixing and improving reaction efficiency and quality. Attached Figure Description

[0029] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0032] In the diagram: 100, vessel body; 110, liquid inlet; 120, outlet; 200, rotating shaft; 210, vent hole; 300, one-way valve; 400, stirring paddle; 500, mounting sleeve; 130, catalyst inlet; 140, auxiliary material inlet; 600, filter plate; 700, gas-liquid separator; 800, first connecting pipe; 710, box body; 720, holding space; 730, gas outlet; 740, liquid outlet; 750, partition; 760, first space; 770, second space; 780, sampling port; 150, reflux port; 810, first inlet; 820, first outlet; 830, second outlet; 840, control valve; 900, jacket; 910, heat exchange medium inlet; 920, heat exchange medium outlet. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0034] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0035] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Reference Figures 1-2This utility model proposes a gas-liquid two-phase reaction vessel, including a vessel body 100. The vessel body 100 has a liquid inlet 110 and a discharge outlet 120. The liquid inlet 110 is located above the vessel body 100, and the discharge outlet 120 is located at the bottom of the vessel body 100. The liquid inlet 110 is a tangential inlet. A rotating shaft 200 is rotatably mounted on the vessel body 100. One end of the rotating shaft 200 is located outside the vessel body 100, and the other end is located inside the vessel body 100. The end of the rotating shaft 200 located inside the vessel body 100 is close to the bottom of the vessel body 100. The rotating shaft 200 has a vent hole 21. 0. The axis of the vent 210 coincides with the axis of the rotating shaft 200. The vent 210 is used to fill the vessel body 100 with raw material gas (such as air). The one-way valve 300 is located at one end of the vent 210 inside the vessel body 100. The one-way valve 300 is used to prevent liquid inside the vessel body 100 from entering the vent 210. There are two stirring paddles 400, both of which are located on the rotating shaft 200. Both stirring paddles 400 are located inside the vessel body 100, and the two stirring paddles 400 are distributed sequentially along the axis of the rotating shaft 200. The stirring paddles 400 are turbine-type four-bladed oblique blades.

[0038] In this embodiment, the vessel body 100 can be made of stainless steel, possessing good corrosion resistance and strength to adapt to various chemical reaction environments. The size and shape of the liquid inlet 110 and outlet 120 should be designed according to the actual material flow rate and discharge requirements, and equipped with corresponding valves 840 for control. The rotating shaft 200 is mounted on the vessel body 100 via bearings to achieve stable rotation. One end of the rotating shaft 200 located outside the vessel body 100 can be connected to a drive device such as a motor to drive the rotating shaft 200 to rotate. The rotation axis of the drive device is not collinear with the rotation axis of the rotating shaft 200. The drive device drives the rotating shaft 200 to rotate from one side, for example, by gear transmission, chain transmission, belt transmission, etc. The one-way valve 300 can be a ball one-way valve 300 or a gravity one-way valve 300, and is fixed to the end of the vent 210 located inside the vessel body 100 by welding or threaded connection, ensuring a firm installation and good sealing. The connection between the agitator 400 and the rotating shaft 200 can be welding or bolting. The blades of the agitator 400 are configured as a turbine-type four-bladed inclined blade. The turbine-type four-bladed inclined blade allows the gas discharged from the one-way valve 300 to diffuse rapidly along with the liquid, causing the liquid and gas at the bottom of the agitator 400 to mix quickly. At the same time, the gas-liquid mixture diffuses to the inner wall of the vessel 100, then moves upward along the inner wall of the vessel 100, and then moves downward along the outer wall of the rotating shaft 200, forming a strong axial circulating flow. Meanwhile, the liquid inlet 110 can feed tangentially, causing the liquid in the vessel 100 to form turbulence and accelerating the gas-liquid mixing.

[0039] By installing a one-way valve 300 at the end of the vent 210 of the rotating shaft 200, the backflow of liquid in the vessel body 100 into the gas channel is effectively prevented, avoiding the problem of liquid residue accumulation clogging the gas pipeline, reducing the difficulty and frequency of cleaning, and lowering equipment maintenance costs. The turbine-type four-bladed inclined impeller 400 provides a more efficient stirring effect, ensuring thorough mixing of gas and liquid, and improving reaction efficiency and quality.

[0040] Furthermore, it also includes a mounting sleeve 500, which is rotatably mounted on the rotating shaft 200. The rotation axis of the mounting sleeve 500 is collinear with the axis of the rotating shaft 200, and the mounting sleeve 500 is located at the end of the rotating shaft 200 outside the vessel body 100. One end of the mounting sleeve 500 extends into the vent hole 210, and the other end is located outside the vent hole 210. The mounting sleeve 500 is used to connect to an external pipe.

[0041] In this embodiment, the mounting sleeve 500 can be made of a high-strength metal material, such as alloy steel, to ensure its durability and stability. The mounting sleeve 500 and the rotating shaft 200 are rotatably connected via precision ball bearings or sliding bearings, ensuring smooth rotation and low friction. A standard connecting sleeve can be installed on the portion of the mounting sleeve 500 outside the vent 210 for easy connection to external pipelines. The rotatable mounting sleeve 500 on the rotating shaft prevents the rotation of the rotating shaft 200 from affecting the connectivity of external pipelines.

[0042] Furthermore, the vessel body 100 also has a catalyst inlet 130 and an auxiliary material inlet 140, and also includes a filter plate 600 disposed inside the vessel body 100. The filter plate 600 is located between the agitator 400 and the discharge port 120, and the catalyst inlet 130 and the auxiliary material inlet 140 are located above the filter plate 600.

[0043] In this embodiment, the catalyst inlet 130 facilitates the addition of catalyst into the vessel body 100. For example, the auxiliary material inlet 140 facilitates the addition of a pH adjuster into the vessel body 100 to maintain the pH value within a fixed range. The filter plate 600 can be a stainless steel filter screen or a perforated plate, fixed to the inner wall of the vessel body 100 by welding or bolting. The pore size and porosity of the filter plate 600 are selected according to specific filtration requirements to effectively block the catalyst from passing through. The filter plate 600 is located between the stirring blades and the discharge port 120, allowing the liquid carried by the stirring blades to backwash the filter holes, preventing clogging.

[0044] Furthermore, the filter plate 600 is conical, with the cone apex facing the top of the vessel body 100.

[0045] In this embodiment, the filter plate 600 is fixed to the inner wall of the vessel body 100 by welding or using high-strength bolts to ensure its stability. A sealing gasket is provided around the filter plate 600 to enhance the seal between it and the inner wall of the vessel body 100, preventing leakage of the solid catalyst. The conical shape of the filter plate 600 increases the contact area between the filter plate 600 and the liquid inside the vessel body 100, thereby improving the filtration efficiency of the catalyst and reducing the possibility of filter pore blockage.

[0046] Furthermore, it also includes a gas-liquid separation device 700, which is disposed on one side of the vessel body 100; the two ends of the first connecting pipe 800 are respectively connected to the discharge port 120 and the gas-liquid separation device 700, and the gas-liquid separation device 700 is used to separate the gas in the liquid flowing out of the discharge port 120.

[0047] In this embodiment, the gas-liquid separator 700 is fixed to one side of the vessel 100 by a bracket to ensure its stable installation. The first connecting pipe 800 can be a chemically resistant rubber or metal pipe, and is connected to the outlet 120 and the gas-liquid separator 700 via a flange or quick connector. In actual operation, some gas inside the vessel 100 may flow out of the outlet 120 along with the reaction liquid. After passing through the gas-liquid separator 700, the gas mixed in with the liquid can be discharged to improve the purity of the liquid.

[0048] Furthermore, the gas-liquid separation device 700 includes a housing 710 with a holding space 720. The housing 710 also has a gas outlet 730 and a liquid outlet 740. The gas outlet 730 is located at the top of the housing 710. A partition 750 is disposed in the holding space 720. The partition 750 is used to divide the holding space 720 into a first space 760 and a second space 770 that are connected from above. The two ends of the first connecting pipe 800 are respectively connected to the discharge port 120 and the first space 760. The liquid outlet 740 is located in the second space 770.

[0049] In this embodiment, the housing 710 can be made of high-strength metal materials, such as carbon steel or stainless steel, and manufactured through welding to ensure its sealing and structural strength. Gas outlet 730 and liquid outlet 740 are controlled by corresponding valves 840. The partition 750 can be made of stainless steel plate and fixed inside the housing 710 by welding or bolting. The height and thickness of the partition 750 should be set according to the size of the housing 710, wherein the height of the partition 750 should not exceed the height of the holding space 720, maintaining communication between the first space 760 and the second space 770. After the liquid from outlet 120 is transported to the first space 760 by the first connecting pipe 800, once the liquid level in the first space 760 exceeds the partition 750, the liquid will enter the second space 770 under gravity. During the process of liquid overflowing from the first space 760 to the second space 770, the gas in the liquid will be exposed to the outside of the liquid, thereby achieving gas-liquid separation.

[0050] Furthermore, the housing 710 also has a sampling port 780, which is located in the second space 770 and is used to place a sampler. The vessel body 100 also has a reflux port 150. The first connecting pipe 800 has a first inlet 810, a first outlet 820 and a second outlet 830. The first inlet 810 is connected to the discharge port 120. The first outlet 820 and the second outlet 830 are connected to the first space 760 and the reflux port 150, respectively. It also includes two control valves, which are respectively set at the first outlet 820 and the second outlet 830. The two control valves are used to open or close the first outlet 820 and the second outlet 830, respectively.

[0051] In this embodiment, the sampling port 780 can be located on the lower side of the second space 770 of the housing 710, and its diameter should be large enough to accommodate common samplers. The sampling port 780 can be equipped with a sealing plug or valve 840 to ensure sealing when not sampling. The operator can periodically take appropriate samples from the second space 770 for testing. If the raw material concentration in the test results is too high, the liquid from the outlet 120 can be returned to the reactor 100 through the second outlet 830 via the control valve for further reaction. Once the raw material concentration meets the standard, it can be discharged from the liquid outlet 740 to the subsequent process.

[0052] Furthermore, it also includes a jacket 900, which is fitted onto the vessel body 100. The jacket 900 has a heat exchange medium inlet 910 and a heat exchange medium outlet 920.

[0053] In this embodiment, the jacket 900 can be made of stainless steel and is tightly fitted onto the outside of the vessel body 100 by welding. The distance between the jacket 900 and the vessel body 100 should be reasonably designed according to the heat exchange requirements. The heat exchange medium inlet 910 and the heat exchange medium outlet 920 are respectively located at the lower and upper parts of the jacket 900, and their size and shape should match the external heat exchange pipes. Valves 840 can be installed at the inlet and outlet to control the flow rate of the heat exchange medium. In practical applications, the heat exchange medium (such as steam, heat transfer oil, or cold water) enters the jacket 900 through the heat exchange medium inlet 910, exchanges heat with the material inside the vessel body 100, and then flows out from the heat exchange medium outlet 920.

[0054] The jacket 900 fitted on the vessel body 100 provides an effective heat exchange path for the vessel body 100, and can quickly and uniformly adjust the temperature of the material inside the vessel body 100 to meet the temperature conditions required for the reaction.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas-liquid two-phase reaction vessel, characterized in that, include: The vessel body (100) has a liquid inlet (110) and a discharge outlet (120). The liquid inlet (110) is located above the vessel body (100), and the discharge outlet (120) is located at the bottom of the vessel body (100). The liquid inlet (110) is a tangential inlet. A rotating shaft (200) is rotatably mounted on the vessel body (100). One end of the rotating shaft (200) is located outside the vessel body (100), and the other end is located inside the vessel body (100). The end of the rotating shaft (200) located inside the vessel body (100) is close to the bottom of the vessel body (100). The rotating shaft (200) has a vent hole (210). The axis of the vent hole (210) coincides with the axis of the rotating shaft (200). The vent hole (210) is used to fill the vessel body (100) with gaseous raw materials. A one-way valve (300) is provided at one end of the vent (210) located inside the vessel body (100). The one-way valve (300) is used to prevent liquid inside the vessel body (100) from entering the vent (210). There are two stirring paddles (400), both of which are mounted on the rotating shaft (200). Both stirring paddles (400) are located inside the vessel body (100), and the two stirring paddles (400) are distributed sequentially along the axial direction of the rotating shaft (200). The stirring paddles (400) are turbine-type four-bladed oblique blades.

2. The gas-liquid two-phase reactor according to claim 1, characterized in that, Also includes: The mounting sleeve (500) is rotatably mounted on the rotating shaft (200). The rotation axis of the mounting sleeve (500) is collinear with the axis of the rotating shaft (200). The mounting sleeve (500) is located at the end of the rotating shaft (200) outside the vessel body (100). One end of the mounting sleeve (500) extends into the vent hole (210), and the other end is located outside the vent hole (210). The mounting sleeve (500) is used to connect to an external pipe.

3. The gas-liquid two-phase reaction vessel according to claim 1, characterized in that, The vessel body (100) also has a catalyst inlet (130) and an auxiliary material inlet (140), and further includes: A filter plate (600) is disposed inside the vessel body (100). The filter plate (600) is located between the stirring paddle (400) and the discharge port (120), and the catalyst inlet (130) and the auxiliary material inlet (140) are located above the filter plate (600).

4. The gas-liquid two-phase reactor according to claim 3, characterized in that, The filter plate (600) is conical, with the top of the filter plate (600) facing the top of the vessel body (100).

5. A gas-liquid two-phase reaction vessel according to claim 1, characterized in that, Also includes: A gas-liquid separation device (700) is disposed on one side of the vessel body (100); The first connecting pipe (800) is connected at both ends to the discharge port (120) and the gas-liquid separator (700), respectively. The gas-liquid separator (700) is used to separate the gas in the liquid flowing out of the discharge port (120).

6. The gas-liquid two-phase reaction vessel according to claim 5, characterized in that, The gas-liquid separation device (700) includes: The housing (710) has a holding space (720), and the housing (710) also has a gas outlet (730) and a liquid outlet (740), the gas outlet (730) being located at the top of the housing (710); A partition (750) is disposed in the holding space (720). The partition (750) is used to divide the holding space (720) into a first space (760) and a second space (770) that are connected above. The two ends of the first connecting pipe (800) are connected to the discharge port (120) and the first space (760) respectively. The liquid outlet (740) is located in the second space (770).

7. A gas-liquid two-phase reaction vessel according to claim 6, characterized in that, The housing (710) also has a sampling port (780) located in the second space (770). The sampling port (780) is used to place a sampler. The vessel body (100) also has a reflux port (150). The first connecting pipe (800) has a first inlet (810), a first outlet (820), and a second outlet (830). The first inlet (810) is connected to the discharge port (120). The first outlet (820) and the second outlet (830) are connected to the first space (760) and the reflux port (150), respectively. The system also includes: Two control valves (840) are respectively located at the first outlet (820) and the second outlet (830), and the two control valves (840) are used to open or close the first outlet (820) and the second outlet (830).

8. A gas-liquid two-phase reaction vessel according to claim 1, characterized in that, Also includes: A jacket (900) is fitted onto the vessel body (100), and the jacket (900) has a heat exchange medium inlet (910) and a heat exchange medium outlet (920).

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