Gas-liquid double-phase feeding multi-material-pipe small reaction kettle

Abstract

The utility model relates to a gas-liquid double-phase feeding multi-material-pipe small reaction kettle which comprises a kettle body and a kettle cover, at least eight first-stage feeding pipes are installed on the kettle cover, each first-stage feeding pipe is divided into a plurality of feeding sets in the circumferential direction, the feeding sets comprise the liquid feeding set, the liquid-phase feeding set and the gas feeding set, and each feeding set is provided with at least two first-stage feeding pipes; in the material conveying process, feeding is conducted through the multiple different first-stage feeding pipes, the number of the first-stage feeding pipes for feeding can be adjusted once a pipeline is blocked or reaction conditions are changed in the process, and the device has the effect of adapting to different feeding modes needed by various reactions while continuous reactions are guaranteed.

Description

Technical Field

[0001] This application relates to the field of reactors, and in particular to a small-scale reactor with a gas-liquid two-phase feed multi-tube. Background Technology

[0002] A reaction vessel is a container used for chemical reactions. During use, liquid materials are injected into the reaction vessel for mixing and reaction, providing a stable environment to ensure the necessary stirring, temperature, and other conditions are met. Reaction vessels are widely used in the chemical, pharmaceutical, and food industries to complete a series of process reactions such as polymerization, fluorination, and condensation.

[0003] Most existing chemical reactors have a single feed pipe, where materials are discharged into the reactor through a single pipe. During use, problems such as pipe blockage often occur, or changes in reaction conditions lead to changes in the feeding method, requiring reactor shutdown and modification, repeated leak testing, resulting in low work efficiency and low product qualification rate. Utility Model Content

[0004] To address the issue of downtime for maintenance caused by pipe blockage or changes in feeding methods, this application provides a small gas-liquid two-phase feed multi-pipe reactor.

[0005] The gas-liquid two-phase feed multi-tube small reactor provided in this application adopts the following technical solution:

[0006] A small gas-liquid two-phase feed multi-feed vessel includes a vessel body and a vessel cover. At least eight primary feed pipes are installed on the vessel cover. The primary feed pipes are divided into several feed groups along the circumference. The feed groups include liquid feed groups, liquid phase feed groups, and gas feed groups. Each feed group is provided with at least two primary feed pipes. Gas or liquid is delivered into the vessel body through one or two of the primary feed pipes of the feed groups.

[0007] By adopting the above technical solution, liquid feed group, gas feed group and liquid phase feed group are set up. During the material transportation process, the material is fed through multiple different primary feed pipes. If the pipeline is blocked or the reaction conditions are changed during this process, the number of primary feed pipes can be adjusted to ensure the continued reaction and solve the problem that different reactions require different feeding methods.

[0008] Optionally, each primary feed pipe is connected to two to three secondary feed pipes at its end. The end of each secondary feed pipe opposite to the primary feed pipe is connected to the interior of the reactor body. Each secondary feed pipe is equipped with a control valve for controlling the on / off state of the pipeline.

[0009] By adopting the technical scheme, multiple secondary feeding pipes are arranged, when feeding the kettle body, part of the secondary feeding pipes are enabled to feed, the number of the secondary feeding pipes is controlled to control the flow rate of the feeding, when the secondary feeding pipe is blocked, the control valve is closed and the unenabled secondary feeding pipe is enabled, so that the continuity of the experiment can be maintained.

[0010] Optionally, the secondary feeding pipe is inserted through the kettle cover, and the secondary feeding pipe is detachably connected to the kettle cover through a flange.

[0011] By adopting the technical scheme, each secondary feeding pipe can be taken out individually without detaching the kettle cover, and each secondary feeding pipe can be individually dredged and maintained.

[0012] Optionally, the primary feeding pipe and the secondary feeding pipe are connected through a check valve.

[0013] By adopting the technical scheme, the check valve is arranged to prevent the secondary feeding pipe from being sucked into the primary feeding pipe, and the probability of the feeding pipe being blocked is further reduced.

[0014] Optionally, the secondary feeding pipe comprises a short pipe and a long pipe, the secondary feeding pipe of the gas feeding group is arranged as the short pipe, and the secondary feeding pipe of the liquid feeding group and the liquid phase feeding group is arranged as the long pipe.

[0015] By adopting the technical scheme, the long pipe and the short pipe are arranged, the opening of different secondary feeding pipes can be controlled to add gas and liquid in different flow rates and different ways, and more refined experiment requirements can be met.

[0016] Optionally, an annular vent pipe is arranged in the kettle body, the vent pipe is provided with a hollow air groove, a plurality of air outlets are arranged on the vent pipe, and one end of the short pipe is inserted into the vent pipe and communicates with the air groove of the vent pipe.

[0017] By adopting the technical scheme, the short pipe is vented to the vent pipe, the gas material is discharged from the air outlet of the vent pipe and reacts with the liquid material in the kettle body, a plurality of air outlets are arranged, the reaction between the gas material and the liquid material is sufficient, and the short pipe is inserted and connected, so that the short pipe can be easily replaced.

[0018] Optionally, the air outlets are evenly distributed along the inner ring side wall and the outer ring side wall of the vent pipe.

[0019] By adopting the technical scheme, the air outlets are arranged on the inner and outer sides, the contact area of the gas-liquid reaction is large, and the reaction effect is good.

[0020] Optionally, the kettle cover is provided with a stirring paddle, and the stirring paddle is provided with at least two layers of paddles, and each layer of paddles is provided with four blades.

[0021] By adopting the technical scheme, the uniformity of stirring is improved by the double-layer four-blade stirring paddle.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] 1. By feeding through multiple different primary feeding pipes, once the pipe is blocked or the reaction condition is changed, the number of primary feeding pipes for feeding can be adjusted, so that the continuous reaction is ensured, and the problem of different feeding modes required by various reactions is solved;

[0024] 2. Each secondary feeding pipe can be removed separately without disassembling the kettle cover, and each secondary feeding pipe can be individually dredged and maintained;

[0025] 3. The annular air pipe is provided with gas outlets on the inner and outer sides, the contact area of gas-liquid reaction is large, and the reaction effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of the front view of the multi-pipe small reaction kettle of the present application.

[0027] Figure 2 is a schematic view of the top view of the multi-pipe small reaction kettle of the present application.

[0028] Figure 3 is a schematic view of the perspective structure of the short pipe and the air pipe of the multi-pipe small reaction kettle of the present application.

[0029] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity, and are not necessarily drawn to scale. For example, the dimensions and positions of some of the elements in the drawings can be exaggerated relative to other elements to help improve understanding of the present embodiments.

[0030] Reference signs: 1, primary feeding pipe; 2, gas phase feeding group; 3, liquid phase feeding group; 4, liquid feeding group; 5, secondary feeding pipe; 51, short pipe; 52, long pipe; 6, control valve; 7, check valve; 8, stirring paddle; 9, air pipe; 91, gas outlet. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the drawings.

[0032] The present embodiments disclose a gas-liquid two-phase feeding multi-pipe small reaction kettle, which is described below with reference to the drawings. Figure 1 and Figure 2, including kettle body and kettle cover, kettle body and kettle cover are assembled to form a cavity structure, kettle body is used for containing reaction liquid, kettle cover is buckled on the top of kettle body, and a relatively closed environment is kept. A discharge pipe for discharging materials is arranged at the bottom of the kettle body. At least 8 first feeding pipes 1 are installed on the kettle cover. The total number of the first feeding pipes 1 is greater than the required amount of single feeding. The first feeding pipes 1 are divided into a plurality of feeding groups along the circumference of the kettle body. The plurality of feeding groups include a liquid feeding group 4, a liquid phase feeding group 3 and a gas feeding group. The feeding groups are connected in a ring shape. Each feeding group is provided with at least 1-2 first feeding pipes 1. The first feeding pipes 1 of one or two feeding groups are used to transport gas or liquid into the kettle body. During the material transportation process, different first feeding pipes 1 are used for feeding. Once the pipeline is blocked during the process, or the reaction conditions are changed, the number of feeding first feeding pipes 1 can be adjusted to ensure continuous reaction and solve the problem of different feeding modes required by various reactions.

[0033] With reference to Figure 1 and Figure 2 , a stirring paddle 8 is installed on the kettle cover. The stirring paddle 8 is provided with at least two layers of paddles, and each layer of paddles is provided with four blades. The uniformity of stirring is improved by the double-layer four-blade stirring paddle 8.

[0034] With reference to Figure 1 and Figure 2 , 2-3 second feeding pipes 5 are connected to the end of each first feeding pipe 1. The first feeding pipe 1 and the second feeding pipe 5 are connected through a check valve 7. The end of the second feeding pipe 5, which is away from the first feeding pipe 1, is communicated with the inside of the kettle body and extends to the inside of the kettle body. The second feeding pipe 5 is close to the inner wall of the kettle body and avoids the stirring paddle 8 arranged in the middle. The first feeding pipe 1 and the second feeding pipe 5 are both provided with a control valve 6 for controlling the opening and closing of the pipeline. The number of second feeding pipes 5 configured for the first feeding pipe 1 is large, and there is a surplus of the number of second feeding pipes 5. When feeding the kettle, part of the second feeding pipes 5 are used for feeding. The number of second feeding pipes 5 is controlled to control the flow size of the feeding. When a certain second feeding pipe 5 is blocked, the control valve 6 is closed and the unused second feeding pipe 5 is opened, so that the continuity of the experiment can be maintained without opening the kettle for maintenance. The check valve 7 is configured to prevent the second feeding pipe 5 from being sucked into the first feeding pipe 1, further reducing the probability of blocking the feeding pipe.

[0035] With reference to Figure 1 and Figure 2 , the second feeding pipe 5 penetrates and is inserted into the kettle cover. The second feeding pipe 5 is detachably connected to the kettle cover through a flange plate. Each second feeding pipe 5 can be taken out individually without detaching the kettle cover by being detached from the kettle cover individually. Each second feeding pipe 5 can be individually dredged and maintained.

[0036] With reference to Figure 1 andFigure 2 , the secondary feeding pipe 5 includes a short pipe 51 and a long pipe 52, the secondary feeding pipe 5 of the gas feeding group is arranged as the short pipe 51, the secondary feeding pipe 5 of the liquid feeding group 4 and the liquid phase feeding group 3 is arranged as the long pipe 52, the long pipe 52 and the short pipe 51 are arranged, and the opening of different secondary feeding pipes 5 can add gas and liquid in different flow rates and different ways, so that more refined test requirements can be met.

[0037] Referring to Figure 1 and Figure 2 , the vent pipe 9 is arranged in the kettle body in an annular shape, the vent pipe 9 is provided with a hollow air groove, a plurality of gas outlets 91 are formed on the vent pipe 9, and the downward end of the short pipe 51 is inserted into the vent pipe 9 and communicates with the air groove of the vent pipe 9. The short pipe 51 is vented to the vent pipe 9, the gas material is discharged from the gas outlet 91 of the vent pipe 9, reacts with the liquid material in the kettle body, a plurality of gas outlets 91 are arranged, the reaction between the gas material and the liquid material is sufficient, and the short pipe 51 is connected by insertion, so that the short pipe 51 can be easily replaced.

[0038] Referring to Figure 2 and Figure 3 , the gas outlet 91 is arranged in a plurality of and uniformly distributed along the inner ring side wall and the outer ring side wall of the vent pipe 9, the gas outlet 91 is arranged on the inner and outer sides, the contact area of the gas-liquid reaction is large, and the reaction effect is good.

[0039] The implementation principle of the gas-liquid two-phase feeding multi-pipe small reaction kettle according to the embodiment of the application is as follows: the stirring paddle 8 in the kettle body drives the paddle to stir the material, in the material conveying process, the material is fed through a plurality of different primary feeding pipes 1, the gas feeding group is fed through the short pipe 51, the liquid feeding group 4 and the liquid phase feeding group 3 are fed through the long pipe 52, the feeding amount of each group of feeding groups is controlled by the control valve 6 on each pipe, so as to adapt to different situations, when the blockage problem occurs, the secondary feeding pipe 5 can be taken out without disassembling the kettle cover, and each secondary feeding pipe 5 can be individually dredged and maintained.

[0040] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A small-scale gas-liquid two-phase feed multi-feed reactor, comprising a reactor body and a reactor lid, characterized in that: At least eight primary feed pipes (1) are installed on the lid of the vessel. The primary feed pipes (1) are divided into several feed groups along the circumference. The feed groups include a liquid feed group (4), a liquid phase feed group (3), and a gas feed group. Each feed group is provided with at least two primary feed pipes (1). Gas or liquid is transported into the vessel through one or two of the primary feed pipes (1) of the feed groups.

2. The small-scale gas-liquid two-phase feed multi-tube reactor according to claim 1, characterized in that: Each primary feed pipe (1) is connected to 2 to 3 secondary feed pipes (5) at its end. The end of the secondary feed pipe (5) away from the primary feed pipe (1) is connected to the inside of the reactor body. The secondary feed pipe (5) is equipped with a control valve (6) for controlling the opening and closing of the pipeline.

3. The small-scale gas-liquid two-phase feed multi-feed tube reactor according to claim 2, characterized in that: The secondary feed pipe (5) is inserted through the kettle cover, and the secondary feed pipe (5) is detachably connected to the kettle cover via a flange.

4. A small gas-liquid two-phase feed multi-tube reactor according to claim 2, characterized in that: The primary feed pipe (1) and the secondary feed pipe (5) are connected by a check valve (7).

5. A small gas-liquid two-phase feed multi-tube reactor according to claim 2, characterized in that: The secondary feed pipe (5) includes a short pipe (51) and a long pipe (52). The secondary feed pipe (5) of the gas feed group is configured as a short pipe (51), and the secondary feed pipe (5) of the liquid feed group (4) and the liquid phase feed group (3) is configured as a long pipe (52).

6. A small gas-liquid two-phase feed multi-tube reactor according to claim 5, characterized in that: The vessel body is provided with an annular vent pipe (9), the vent pipe (9) is provided with a hollow air groove, and a plurality of air outlet holes (91) are opened on the vent pipe (9). One end of the short pipe (51) is inserted into the vent pipe (9) and communicates with the air groove of the vent pipe (9).

7. A small gas-liquid two-phase feed multi-tube reactor according to claim 6, characterized in that: The air outlet (91) is provided in several parts and is evenly distributed along the inner and outer ring sidewalls of the air pipe (9).

8. A small gas-liquid two-phase feed multi-feed tube reactor according to claim 1, characterized in that: The vessel lid is equipped with a stirring paddle (8), which has at least two layers of blades, each layer of blades having four blades.

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