Online analysis sampling device for reaction kettle

Abstract

The utility model relates to the technical field of reaction kettle sampling, in particular to an on-line analysis sampling device for a reaction kettle, which comprises a sampling assembly arranged on a reaction kettle body, the sampling assembly comprises a flow cell and a pH electrode, a liquid inlet and a liquid outlet of the flow cell are respectively connected with a first circulating pipe and a second circulating pipe, and the first circulating pipe and the second circulating pipe are communicated with each other. One end of the first circulating pipe and one end of the second circulating pipe both extend into the reaction kettle body and are respectively connected with a sample liquid outlet and a sample liquid inlet, the pH electrode is arranged in the flow cell body, and during sampling, a stirrer in the reaction kettle body rotates at a high speed to drive a medium to flow, and a pressure difference is generated to enable the medium to enter the first circulating pipe from the sample liquid outlet; the medium enters the reaction kettle body through the first circulating pipe and then enters the flow cell, online analysis of the medium is completed through the pH electrode arranged in the flow cell, and then the medium enters the reaction kettle body from the sample liquid inlet through the second circulating pipe and is circulated, so that online analysis of the medium is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor sampling, in particular to an on-line analysis sampling device for a reactor. Background Art

[0002] At present, the medium analysis in the reactor is generally carried out by directly inserting a pH electrode into the reactor. Due to factors such as temperature and medium pollution, with the extension of the service time, the parameters of the pH glass electrode will drift. Therefore, the pH electrode needs to be periodically taken out for cleaning, calibration or replacement. This process requires the electrode sheath to be pulled out and opened, resulting in inconvenient maintenance and affecting production. Moreover, due to the high temperature of the medium in the reactor, the service life of the pH electrode will be shortened. Also, because the pH electrode and the installation sheath need to extend into the reactor, a longer length is required, resulting in increased manufacturing and use costs. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an on-line analysis sampling device for a reactor, which is used to solve the problems existing in the prior art proposed in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: An on-line analysis sampling device for a reactor, comprising a sampling assembly arranged on the reactor body. The sampling assembly includes a flow-through cell and a pH electrode. The inlet and outlet of the flow-through cell are respectively connected with a first circulation pipe and a second circulation pipe. One ends of the first circulation pipe and the second circulation pipe both extend into the reactor body and are respectively connected with a flow-through cell sample liquid inlet and a flow-through cell sample liquid outlet. The pH electrode is arranged in the body of the flow-through cell;

[0005] The ends of the flow-through cell sample liquid inlet and the flow-through cell sample liquid outlet are both trumpet-shaped;

[0006] Cut-off valves are arranged on the first circulation pipe and the second circulation pipe between the reactor body and the flow-through cell;

[0007] A cooler is arranged on the first circulation pipe between the flow-through cell and the cut-off valve;

[0008] A flange is arranged on the side wall of the reactor body, and the first circulation pipe and the second circulation pipe both pass through the flange.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model has the following beneficial effects:

[0011] During sampling, the stirrer in the reaction kettle body rotates clockwise at a high speed to drive the medium to flow, generating a pressure difference that causes the medium to enter the first circulation pipe from the sample liquid inlet of the flow cell, and then enter the flow cell. The online analysis of the medium is completed through the pH electrode installed in the flow cell. Then, the medium enters the reaction kettle body from the sample liquid outlet of the flow cell through the second circulation pipe for circulation, thus completing the online analysis of the medium;

[0012] The device has a simple structure. By setting a cut-off valve, it is convenient for the maintenance of the flow cell, the replacement, cleaning, and calibration of the pH electrode;

[0013] The temperature of the medium is reduced by a cooler, prolonging the service life of the pH electrode and with relatively low usage cost;

[0014] The pH electrode is directly installed on the flow cell by using a sheath, shortening the length of the installation sheath of the pH electrode, reducing the manufacturing cost, and at the same time not affecting the continuous production during the cleaning and replacement of the pH electrode. Brief Description of the Drawings

[0015] Figure 1 It is a top view of the present utility model;

[0016] Figure 2 It is a front view of the present utility model;

[0017] Figure 3 It is a structural diagram of the flow cell of the present utility model.

[0018] In the figure: 1. Reaction kettle body; 2. Sampling assembly; 3. Flow cell; 4. pH electrode; 5. First circulation pipe; 6. Second circulation pipe; 7. Sample liquid inlet of the flow cell; 8. Sample liquid outlet of the flow cell; 9. Cut-off valve; 10. Cooler; 11. Flange. Detailed Embodiment

[0019] Please refer to Figures 1 to 3 , a sampling device for on-line analysis of a reaction kettle, including a sampling assembly 2 provided on the reaction kettle body 1. The sampling assembly 2 includes a flow cell 3 and a pH electrode 4. A first circulation pipe 5 and a second circulation pipe 6 are respectively connected to the liquid inlet and outlet of the flow cell 3. One ends of the first circulation pipe 5 and the second circulation pipe 6 both extend into the reaction kettle body 1 and are respectively connected to a sample liquid inlet 7 of the flow cell and a sample liquid outlet 8 of the flow cell. The pH electrode 4 is provided in the cell body of the flow cell 3.

[0020] Among them,

[0021] The ends of the sample liquid inlet 7 of the flow cell and the sample liquid outlet 8 of the flow cell are both trumpet-shaped.

[0022] Cut-off valves 9 are provided on the first circulation pipe 5 and the second circulation pipe 6 between the reaction kettle body 1 and the flow cell 3.

[0023] A cooler 10 is provided on the first circulation pipe 5 between the flow-through cell 3 and the cut-off valve 9.

[0024] A flange 11 is provided on the side wall of the reaction kettle body 1, and both the first circulation pipe 5 and the second circulation pipe 6 pass through the flange 11.

[0025] An on-line analyzer is installed in an external circulation manner for the pH electrode 4.

[0026] The working principle of the present utility model: During sampling, the stirrer in the reaction kettle body 1 rotates clockwise at a high speed to drive the medium to flow, generating a pressure difference so that the medium enters the first circulation pipe 5 from the flow-through cell sample liquid inlet 7, and then enters the flow-through cell 3. The on-line analysis of the medium is completed by the pH electrode 4 provided in the flow-through cell 3. Then the medium enters the reaction kettle body 1 from the flow-through cell sample liquid outlet 8 through the second circulation pipe 6 for circulation, thereby completing the on-line analysis of the medium. The device has a simple structure. By setting the cut-off valve 9, it is convenient to repair the flow-through cell 3, replace, clean and calibrate the pH electrode 4; the temperature of the medium is reduced by the cooler 10, the service life of the pH electrode 4 is prolonged, and the use cost is relatively low; the pH electrode 4 is directly installed on the flow-through cell 3 by using a sheath, the length of the installation sheath of the pH electrode 4 is shortened, the manufacturing cost is reduced, and the continuous production is not affected when the pH electrode 4 is cleaned and replaced.

[0027] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A sampling device for online analysis of a reactor, comprising a sampling assembly (2) arranged on a reactor body (1), characterized in that: The sampling assembly (2) comprises a circulation pool (3) and a pH electrode (4); the liquid inlet and the liquid outlet of the circulation pool (3) are respectively connected to a first circulation pipe (5) and a second circulation pipe (6); one end of the first circulation pipe (5) and the second circulation pipe (6) extend into the reactor body (1) and are respectively connected to a circulation pool sample liquid inlet (7) and a circulation pool sample liquid outlet (8); the pH electrode (4) is arranged in the circulation pool (3); The ends of the circulation pool sample liquid inlet (7) and the circulation pool sample liquid outlet (8) are both trumpet-shaped; The first circulation pipe (5) and the second circulation pipe (6) are provided with a cut-off valve (9) located between the reaction kettle body (1) and the circulation pool (3); The first circulation pipe (5) is provided with a cooler (10) located between the circulation pool (3) and the shut-off valve (9); A flange (11) is provided on the side wall of the reactor body (1), and the first circulation pipe (5) and the second circulation pipe (6) both pass through the flange (11).

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