CN219252582U

CN219252582U - Multi-kettle serial reaction device

Info

Publication number: CN219252582U
Application number: CN202223494735.3U
Authority: CN
Inventors: 李翔; 王浩; 景雁凤
Original assignee: Inner Mongolia Shuangxin Environment Friendly Material Co ltd; Inner Mongolia Shuangxin Polymer Materials Technology Research Institute Co ltd
Current assignee: Inner Mongolia Shuangxin Environment Friendly Material Co ltd; Inner Mongolia Shuangxin Polymer Materials Technology Research Institute Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-27
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to a multi-kettle serial reaction device which comprises a plurality of reaction kettles which are sequentially connected, wherein each reaction kettle comprises a reaction kettle body, the upper end of the reaction kettle body is provided with a feed inlet and a third component inlet, the lower end of the reaction kettle body is provided with a sampling outlet and a discharge outlet, the discharge outlet of the former reaction kettle body is connected with the feed inlet of the latter reaction kettle body through a pipeline, and the height of the feed inlet of the latter reaction kettle body is higher than that of the discharge outlet of the former reaction kettle body. The utility model can ensure more sufficient and even stirring of reactants, continuous and stable feeding and discharging, and simultaneously can timely adjust various indexes in the reaction process, thereby being beneficial to improving the product quality and the preparation efficiency.

Description

Multi-kettle serial reaction device

Technical Field

The utility model relates to the technical field of chemical industry, in particular to a multi-kettle serial reaction device.

Background

In the existing laboratory polyvinyl alcohol preparation process, a single-kettle reaction device is adopted in the polymerization process to prepare a resin sample, and the single-kettle reaction has the following problems due to the sticky texture of reactants: (1) the reaction residence time is short, and the reactant cannot be modified; (2) The single kettle has limited volume, fixed feeding amount, low preparation efficiency and incapability of continuous preparation; (3) The stirring force of the blades in the kettle is limited, and the reactant can not be fully and uniformly stirred; (4) In the experimental process, various experimental parameters cannot be adjusted in time, and the prepared product has single quality.

Disclosure of Invention

In view of the above, the utility model aims to provide a multi-kettle serial reaction device to solve the problems that reactants cannot be continuously prepared, cannot be modified, are insufficiently stirred and have poor viscosity and fluidity in the polymerization process of the existing polyvinyl alcohol preparation technology.

The utility model provides a multi-kettle serial reaction device which comprises a plurality of reaction kettles which are sequentially connected, wherein each reaction kettle comprises a reaction kettle body, the upper end of the reaction kettle body is provided with a feed inlet and a third component inlet, the lower end of the reaction kettle body is provided with a sampling outlet and a discharge outlet, the discharge outlet of the former reaction kettle body is connected with the feed inlet of the latter reaction kettle body through a pipeline, and the height of the feed inlet of the latter reaction kettle body is higher than that of the discharge outlet of the former reaction kettle body.

Preferably, the discharge outlet of the latter reaction kettle body is positioned below the discharge outlet of the former reaction kettle body.

Preferably, the height of the feed inlet of the reaction kettle body at the rear is 50% -80% of the height scale of the reaction kettle body at the front.

Preferably, the feed inlet of the foremost reactor body is connected to a feed unit through a pipeline.

Preferably, the discharging outlet of the last reaction kettle body is connected to a receiving barrel through a pipeline.

Preferably, a pipeline jacket is arranged on the periphery of the pipeline in a surrounding way, and the pipeline jacket is connected to the temperature control device.

Preferably, a reaction kettle jacket is arranged on the periphery of the reaction kettle body in a surrounding mode, and the reaction kettle jacket is connected to the temperature control device.

Preferably, the heating medium introduced into the temperature control device is circulating water, hot oil or steam.

Preferably, the third component inlet of the reaction kettle body is connected to a third component metering pump; the bottom of the reaction kettle body is provided with a three-way valve, and three ends of the three-way valve are respectively communicated with the sampling outlet, the discharging outlet and the inside of the reaction kettle body.

Preferably, the upper end of the reaction kettle body is also provided with a condensing tube interface.

Preferably, the motor is arranged on the reaction kettle body, a rotating shaft is arranged in the reaction kettle body along the central axis direction, the motor is connected with the rotating shaft, and at least one stirring blade is arranged on the rotating shaft.

Preferably, a plurality of stirring blades are provided on the rotating shaft in the axial direction.

According to the utility model, the plurality of reaction kettles are arranged in series, the feed inlet of the latter reaction kettle is higher than the bottom of the former reaction kettle, the liquid level in each reaction kettle body can be kept stable based on the U-shaped pipe principle, meanwhile, the indexes of reactants in the reaction kettle body can be detected in real time through the sampling outlet at the lower end of each reaction kettle body, if the indexes are abnormal, the reaction parameters can be adjusted by adding a third component into the reaction kettle body through the third component inlet at the upper end of the reaction kettle body in time, the reaction time is prolonged, the reaction shaft is arranged in a mode of moving along the axial direction, the reactant stirring is ensured to be more sufficient and uniform, the continuous and stable feeding and discharging are ensured, and meanwhile, the indexes in the reaction process can be adjusted in time, so that the product quality and the preparation efficiency are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a multi-tank serial reaction apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a multi-tank series reactor connected to other related devices according to an embodiment of the present utility model.

Detailed Description

The description of the embodiments of this specification should be taken in conjunction with the accompanying drawings, which are a complete description of the embodiments. In the drawings, the shape or thickness of the embodiments may be enlarged and indicated simply or conveniently. Furthermore, portions of the structures in the drawings will be described in terms of separate descriptions, and it should be noted that elements not shown or described in the drawings are in a form known to those of ordinary skill in the art.

Any references to directions and orientations in the description of the embodiments herein are for convenience only and should not be construed as limiting the scope of the utility model in any way. The following description of the preferred embodiments will refer to combinations of features, which may be present alone or in combination, and the utility model is not particularly limited to the preferred embodiments. The scope of the utility model is defined by the claims.

As shown in fig. 1, a schematic structural diagram of a multi-kettle serial reaction device according to an embodiment of the present utility model is shown, where the multi-kettle serial reaction device includes a plurality of reaction kettles sequentially connected, and this embodiment is illustrated by taking two reaction kettles as an example: each reaction kettle comprises a reaction kettle body 1, wherein the upper end of the reaction kettle body 1 is provided with a feed inlet 2 and a third component inlet 3, the lower end of the reaction kettle body 1 is provided with a sampling outlet 4 and a discharge outlet 5, the discharge outlet 5 of the former reaction kettle body 1 is connected with the feed inlet 2 of the latter reaction kettle body 1 through a pipeline, and the height of the feed inlet 2 of the latter reaction kettle body 1 is higher than that of the discharge outlet 5 of the former reaction kettle body 1. Therefore, based on the U-shaped pipe principle, the liquid level in all reaction kettle bodies can be kept stable, meanwhile, the sampling outlet at the lower end of each reaction kettle body is used for sampling in real time, the reactant index in the reaction kettle bodies can be detected in real time, and if the reactant index is abnormal, the reaction parameters can be adjusted by adding a third component through the third component inlet at the upper end of the reaction kettle body in time. Preferably, the third component may be a modifier.

As shown in fig. 2, in the present embodiment, the height of the feed port 2 of the latter reaction vessel body 1 is located at 50-80%, preferably 60% of the height scale of the former reaction vessel body 1. If the capacity of the reaction kettle body 1 is 5L, the position of 60 percent is the position height of 3L. The reason for this is that the front reaction kettle to the rear reaction kettle need to rely on gravity flow due to the sticky texture of reactants, and the U-shaped pipe principle is utilized, so that the liquid level of the front reaction kettle is kept, and the flowability of the rear end is ensured. The feed inlet 2 of the foremost reactor body 1 is connected to the feed unit a by a pipe. The discharge outlet 5 of the last reaction kettle body 1 is connected to the receiving barrel B through a pipeline, preferably, the pipeline led out by the discharge outlet 5 of the last reaction kettle body 1 is lifted to 60% of the liquid level height and then connected to the receiving barrel B, so as to ensure that the liquid level of each reaction kettle is kept stable. A pipe jacket 6 is provided around the outer periphery of each pipe, and the pipe jacket 6 is connected to a temperature control device (not shown). A reaction kettle jacket 7 is provided around the outer periphery of the reaction kettle body 1, and the reaction kettle jacket 7 is connected to a temperature control device (not shown). The temperature control device of the embodiment is preferably a circulating water temperature control device, and circulating water can be conveyed into the jacket through a pipeline so as to achieve the effect of temperature control. The fluidity of the resin sample in the process of preparing the polyvinyl alcohol can be maintained by keeping the temperature of the resin sample at 60-65 ℃. The upper end of the reaction kettle body 1 is also provided with a condensing tube interface 8 for assisting in condensing the reaction kettle.

As shown in fig. 2, in this embodiment, the third component inlet 3 of the reaction kettle body 1 is connected to the third component metering pump C, and the third component metering pump C can precisely calculate the amount of the materials and the third component added per minute, and the metering pumps are used to simultaneously pump the materials and the third component into each reaction kettle. The bottom of the reaction kettle body 1 is provided with a three-way valve, and three ends of the three-way valve are respectively communicated with the sampling outlet 4, the discharging outlet 5 and the inside of the reaction kettle body 1. Either the sampling outlet 4 or the discharge outlet 5 can be opened separately, the nature of the reactants can be detected while the sampling outlet 4 is opened, and if an abnormality is found, the adjustment can be made by adding a third component in time.

As shown in fig. 1, in this embodiment, stirring blades are disposed in the reaction kettle for stirring, a motor 11 is disposed on the reaction kettle body 1, a rotating shaft 9 is disposed in the reaction kettle body 1 along the central axis direction, the motor 11 is connected with the rotating shaft 9, at least one stirring blade 10 is disposed on the rotating shaft 9, and the motor 11 can drive the rotating shaft 9 to rotate to drive the stirring blades 10 to realize stirring. Further, a plurality of stirring blades may be provided on the rotation shaft 9 in the axial direction so that stirring can be performed in each height direction. Further, the motor 11 may be configured to drive the shaft 9 to move up and down in the axial direction, so as to drive the stirring blade to stir in the height direction. Thus, by the above arrangement, stirring can be made more uniform and thorough.

Preferably, each pipeline on the reaction kettle body 1 can be connected to the reaction kettle body 1 through a clamping sleeve, so that the disassembly, assembly and maintenance are convenient. The aperture of the discharge outlet 5 can be 1-3cm, and the aperture of the pipeline can be 2-5cm.

It should be understood that this embodiment is exemplified by two reaction kettles, and is not limited to this embodiment, and the number of reaction kettles may be three or more.

In summary, the following technical effects can be achieved by the embodiment of the utility model: (1) The reaction kettles are kept in height difference and connected in sequence, so that the material residence time can be effectively increased, the continuous long-time preparation can be realized, and the preparation efficiency is improved; (2) Continuously feeding and discharging, continuously adjusting parameters, changing the properties of products, and increasing the diversity of the products; (3) The pipelines between the reaction kettles and the discharge outlet at the bottom of the final reaction kettle are connected and heat is supplied for heat preservation, so that the heat fluidity of the materials is increased, the materials are prevented from agglomerating, and the stability of the whole system is effectively ensured; (4) The fresh materials are effectively prevented from being concentrated on the upper part after feeding, and can be fully mixed with other materials in the reaction kettle in time, so that the materials are prevented from being denatured on the upper part and effectively react with the materials in the reaction kettle; (5) The method can sample and detect the lower end of each reaction kettle at any time, monitor each index of each reaction kettle in real time, process and adjust parameters in time by utilizing real-time data, judge the reaction end point by the data, and avoid abnormal occurrence, so that the quality of the product is unqualified and is wasted.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a many kettles establish ties reaction unit, its characterized in that, includes a plurality of reation kettle who connects gradually, every reation kettle all includes reation kettle body (1), the upper end of reation kettle body (1) has feed inlet (2) and third component entry (3), the lower extreme of reation kettle body (1) has sampling outlet (4) and discharge export (5), the former reation kettle body (1) discharge export (5) with the latter reation kettle body (1) feed inlet (2) are connected through the pipeline, and the latter reation kettle body (1) feed inlet (2) highly be higher than the former reation kettle body (1) discharge export (5) highly.

2. The multi-kettle serial reactor according to claim 1, wherein the height of the feed inlet (2) of the latter reactor body (1) is located at 50% -80% of the height scale of the former reactor body (1).

3. Multi-tank serial reaction device according to claim 1, characterized in that the feed opening (2) of the foremost reactor body (1) is connected to a feed unit (a) by a pipe.

4. Multi-tank series reaction device according to claim 1, characterized in that the discharge outlet (5) of the last reactor body (1) is connected by a pipe to a receiving bowl (B).

5. The multi-tank serial reaction device according to claim 3 or 4, characterized in that a pipe jacket (6) is provided around the outer circumference of the pipe, the pipe jacket (6) being connected to a temperature control device.

6. The multi-kettle serial reaction device according to claim 1, wherein a reaction kettle jacket (7) is arranged on the periphery of the reaction kettle body (1) in a surrounding manner, and the reaction kettle jacket (7) is connected to a temperature control device.

7. The multi-kettle serial reactor according to claim 1, wherein the third component inlet (3) of the reactor body (1) is connected to a third component metering pump (C);

the bottom of reation kettle body (1) is provided with three-way valve, three-terminal of three-way valve communicates respectively sampling outlet (4), discharge export (5) and reation kettle body (1) is inside.

8. The multi-kettle serial reaction device according to claim 1, wherein the upper end of the reaction kettle body (1) is further provided with a condensing tube interface (8).

9. The multi-kettle serial reaction device according to claim 1, wherein a motor (11) is arranged on the reaction kettle body (1), a rotating shaft (9) is arranged in the reaction kettle body (1) along the central axis direction, the motor (11) is connected with the rotating shaft (9), and at least one stirring blade (10) is arranged on the rotating shaft (9).

10. Multi-tank serial reaction device according to claim 9, characterized in that a plurality of stirring blades (10) are arranged on the rotating shaft (9) in the axial direction.