Heterogeneous reaction kettle sampling device

Abstract

The utility model discloses a sampling device for a heterogeneous reaction kettle. The sampling device comprises a sampling sleeve and a sampling lifter which are fixed on the inner wall of the reaction kettle, the lower end of the sampling sleeve is inserted into reaction liquid in the reaction kettle, the upper end of the sampling sleeve is fixed on the reaction kettle through a flange, and the sampling sleeve is positioned between the stirring paddle and the inner wall of the reaction kettle; the flange is connected with a T-shaped three-way pipe, a main pipe of the T-shaped three-way pipe and the sampling sleeve are coaxially arranged, one side, far away from the sampling sleeve, of the main pipe of the T-shaped three-way pipe is connected with a first valve, and one side, far away from the T-shaped three-way pipe, of the first valve is connected with a funnel; a branch pipe of the T-shaped three-way pipe is connected with a second valve, and the second valve is used for being connected with an external nitrogen source; the sampling lifter sequentially penetrates through the funnel, the opened first valve, the main pipe of the T-shaped three-way pipe, the flange and the sampling sleeve through the rope for sampling. According to the utility model, the sampling lifter and the rope are isolated from the stirring paddle through the sampling sleeve, so that the rope is prevented from being wound on the stirring paddle, and the stirring paddle does not need to be stopped during sampling. In addition, the sampling lifter is used for sampling from the sampling sleeve, so that the problem of blockage of the sampling sleeve can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a sampling device for heterogeneous reaction vessels. Background Technology

[0002] In the chemical and pharmaceutical industries, sampling is required to accurately determine the endpoint of a reaction and monitor its progress.

[0003] Current sampling methods using batch reactors involve inserting a sampling rod through a flange on the reactor and lowering it below the liquid surface using a rope. During sampling, the agitator must be stopped and the reaction liquid allowed to settle before sampling can begin to prevent the sampling rod from moving with the reaction liquid and thus avoid the rope becoming entangled in the agitator. However, for heterogeneous reaction liquids, especially those containing large amounts of inorganic salts, stopping agitation causes the inorganic salts to settle rapidly, potentially burying the agitator. When the agitator is restarted, the high torque can cause the agitator rod to bend, potentially leading to a production accident.

[0004] Current methods of cyclic sampling involve drawing samples from the reactor and refluxing them using a diaphragm pump or vacuum pump. However, for heterogeneous reaction solutions, especially those containing large amounts of inorganic salts, the sampling tubes are prone to clogging due to the large size and large quantity of inorganic salt particles.

[0005] Therefore, it is necessary to design a sampling device for reactors suitable for heterogeneous reaction liquids. Utility Model Content

[0006] This invention provides a sampling device for a heterogeneous reactor to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A sampling device for a heterogeneous reactor includes a sampling sleeve and a sampling pick fixed to the inner wall of the reactor.

[0009] The lower end of the sampling sleeve is inserted into the reaction liquid inside the reactor, and the upper end of the sampling sleeve is fixed to the reactor by a flange. The sampling sleeve is located between the agitator and the inner wall of the reactor.

[0010] The flange connects to a T-shaped tee pipe. The main pipe of the T-shaped tee pipe is coaxially arranged with the sampling sleeve. A first valve is connected to the side of the main pipe of the T-shaped tee pipe away from the sampling sleeve. A funnel is connected to the side of the first valve away from the T-shaped tee pipe. A second valve is connected to the branch pipe of the T-shaped tee pipe. The second valve is used to connect to an external nitrogen source.

[0011] The sampling stalk is passed sequentially through a funnel, the first valve that has been opened, the main pipe of the T-shaped tee, the flange, and the sampling sleeve using a rope.

[0012] Preferably, a support is fixed to the inner wall of the reactor, and the sampling sleeve is detachably connected to the support.

[0013] Preferably, the sampling sleeve, support, and funnel are all made of stainless steel.

[0014] Preferably, the second valve is a dry quick-connect coupling.

[0015] Preferably, both the sampling grapes and the rope are made of Teflon.

[0016] Beneficial effects:

[0017] This application discloses a sampling device for a heterogeneous reactor. A sampling lift is lowered via a rope, passing sequentially through a funnel, an open first valve, the main pipe of a T-shaped tee, a flange, and a sampling sleeve for sampling. The sampling sleeve isolates the sampling lift and rope from the agitator, preventing the rope from becoming entangled and allowing sampling without stopping the agitator. Furthermore, using the sampling lift to extract samples from the sampling sleeve effectively avoids clogging. This device ensures safe and uninterrupted sampling during the reaction process, demonstrating its superior convenience and wide applicability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a heterogeneous reaction vessel sampling device disclosed in this utility model;

[0020] Figure 2 This is a schematic diagram of the sampling lift and rope assembly of a heterogeneous reactor sampling device disclosed in this utility model.

[0021] 1. Reactor; 2. Sampling sleeve; 3. Sampling tube; 4. Flange; 5. Stirring paddle; 6. T-shaped tee; 7. First valve; 8. Funnel; 9. Second valve; 10. Rope; 11. Support. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] A heterogeneous reactor sampling device, combined with Figure 1 and Figure 2 As shown, the apparatus includes a sampling sleeve 2 and a sampling tube 3 fixed to the inner wall of the reactor 1; the lower end of the sampling sleeve 2 is inserted into the reaction liquid inside the reactor 1, and the upper end of the sampling sleeve 2 is fixed to the reactor 1 by a flange 4. The sampling sleeve 2 is located between the stirring paddle 5 and the inner wall of the reactor 1; the flange 4 is connected to a T-shaped tee pipe 6, the main pipe of the T-shaped tee pipe 6 is coaxially arranged with the sampling sleeve 2, the side of the main pipe of the T-shaped tee pipe 6 away from the sampling sleeve 2 is connected to a first valve 7, and the side of the first valve 7 away from the T-shaped tee pipe 6 is connected to a funnel 8; the branch pipe of the T-shaped tee pipe 6 is connected to a second valve 9, which is used to connect to an external nitrogen source; the sampling tube 3 is passed through the funnel 8, the open first valve 7, the main pipe of the T-shaped tee pipe 6, the flange 4 and the sampling sleeve 2 in sequence by a rope 10 to collect a sample.

[0024] Sampling tube 3 is lowered via rope 10, passing sequentially through funnel 8, the opened first valve 7, the main pipe of T-shaped tee 6, flange 4, and sampling sleeve 2 for sampling. Sampling sleeve 2 isolates sampling tube 3 and rope 10 from the agitator 5, preventing rope 10 from becoming entangled in the agitator 5, thus eliminating the need to stop the agitator 5 during sampling. Furthermore, using sampling tube 3 to extract samples from sampling sleeve 2 effectively avoids clogging issues. This device ensures safe and uninterrupted sampling at any time during the reaction process, demonstrating its superior convenience and wide applicability.

[0025] Specifically, the first valve 7 can be a gate valve or a ball valve, etc., to allow the sampling extractor 3 to pass through.

[0026] Preferably, a support 11 is fixedly provided on the inner wall of the reactor 1, and the sampling sleeve 2 is detachably connected to the support 11. The support 11 stably supports the sampling sleeve 2 and prevents the sampling sleeve 2 from shaking excessively under the influence of the reaction liquid; the detachable connection of the sampling sleeve 2 facilitates the disassembly and maintenance of the sampling sleeve 2. In this embodiment, the sampling sleeve 2 is connected to the support 11 by a pipe clamp.

[0027] Preferably, the sampling sleeve 2, the support 11, and the funnel 8 are all made of stainless steel to prevent corrosion.

[0028] Preferably, the second valve 9 is a dry quick-connect coupling, which facilitates disassembly and prevents leakage. In this embodiment, the dry quick-connect coupling can be a Dixon Bayloc dry-connect coupling. The female connector is connected to the branch pipe of the T-shaped tee 6 through a threaded pipe and a threaded flange. The female connector is mated with the male connector, and the male connector is connected to an external nitrogen source through a pipeline. A valve is installed on the female connector.

[0029] Preferably, both the sampling grapes 3 and the rope 10 are made of Teflon.

[0030] Specifically, the sampling grape 3 has a hole, and the rope 10 passes through the hole and is tied to the sampling grape 3.

[0031] The working principle of the device in this application is as follows:

[0032] When sampling is required, the first valve 7 is closed, and the second valve 9 is connected to an external nitrogen source. Open the second valve 9 to introduce nitrogen and control the flow rate to blow out the reaction liquid in the sampling sleeve 2, ensuring a uniform reaction system. Close the second valve 9 and open the first valve 7. Under pressure, the reaction liquid re-enters the sampling sleeve 2. Repeat this process twice to ensure the reaction liquid in the sampling sleeve 2 is uniform and representative. Lower the sampling lift 3, secured with rope 10, into the sampling sleeve 2 through the first valve 7. The rope 10 should extend to a length where the sampling lift 3 does not exceed the lower end of the sampling sleeve 2. Once the sampling lift 3 is submerged below the surface of the reaction liquid, repeatedly pull it up to collect the sample. After obtaining the sample, remove the sampling lift 3 from the first valve 7, close the first valve 7, and the sampling process is complete.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sampling device for a heterogeneous reaction vessel, characterized in that, Includes a sampling sleeve (2) and a sampling tube (3) fixed to the inner wall of the reactor (1); The lower end of the sampling sleeve (2) is inserted into the reaction liquid inside the reactor (1), and the upper end of the sampling sleeve (2) is fixed on the reactor (1) by the flange (4). The sampling sleeve (2) is located between the stirring paddle (5) and the inner wall of the reactor (1). The flange (4) is connected to a T-shaped tee pipe (6). The main pipe of the T-shaped tee pipe (6) is coaxially arranged with the sampling sleeve (2). A first valve (7) is connected to the side of the main pipe of the T-shaped tee pipe (6) away from the sampling sleeve (2). A funnel (8) is connected to the side of the first valve (7) away from the T-shaped tee pipe (6). A second valve (9) is connected to the branch pipe of the T-shaped tee pipe (6). The second valve (9) is used to connect to an external nitrogen source. The sampling tube (3) is passed sequentially through the funnel (8), the opened first valve (7), the main pipe of the T-shaped tee (6), the flange (4), and the sampling sleeve (2) using a rope (10) for sampling.

2. The heterogeneous reactor sampling device according to claim 1, characterized in that, The inner wall of the reactor (1) is fixed with a support (11), and the sampling sleeve (2) is detachably connected to the support (11).

3. The heterogeneous reaction vessel sampling device according to claim 2, characterized in that, The sampling sleeve (2), support (11) and funnel (8) are all made of stainless steel.

4. The heterogeneous reaction vessel sampling device according to claim 1, characterized in that, The second valve (9) uses a dry quick connector.

5. A heterogeneous reaction vessel sampling device according to claim 1, characterized in that, The sampling grapes (3) and ropes (10) are both made of Teflon.

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