Novel reaction kettle sampling device

Abstract

The utility model relates to the technical field of reaction kettle sampling, in particular to a novel reaction kettle sampling device which comprises a reaction kettle body, the bottom end of the reaction kettle body is communicated with a liquid collecting tank through a sampling flow guide pipe, a connecting plate is fixedly connected to the inner wall of the liquid collecting tank, and one end of the connecting plate is fixedly connected with a cup holder. A plurality of leaking holes are formed in the bottom of the cup holder, and a quick-opening flange is connected to the peripheral wall of the liquid collecting tank. According to the novel reaction kettle sampling device, the quick-opening flange is arranged, so that the sampling cup can be conveniently placed on the cup holder, accurate sampling is realized through the sampling flow guide pipe, vacuum is not broken, continuous stirring and sampling are realized, the influence of frequent start and stop of vacuum on equipment stability is avoided, meanwhile, the operation is simpler and quicker, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettle sampling, in particular to a novel reaction kettle sampling device. Background Art

[0002] Reactor is a kind of physical and chemical reaction equipment, which is a pressure vessel used to complete the process of sulfidation, nitration, hydrogenation, hydrocarbonization, polymerization, condensation, etc. In the process of chemical production in industrial reactor, it is often necessary to take samples and add samples inside the reactor.

[0003] At present, both sampling and adding samples need to be done through the manhole. When sampling, a sampling container needs to be used to lift the liquid from the top. The vacuum needs to be broken to open the manhole and stop stirring. When sampling is finished, the manhole needs to be closed to start stirring and vacuum. When adding samples, the manhole also needs to be opened, stirring needs to be stopped, and attention needs to be paid to whether the material will stick to the wall. Not only is the operation cumbersome, time-consuming and labor-intensive, but the frequent start and stop of the vacuum is not conducive to the stability of the equipment. In view of this, we propose a new reactor sampling device. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a novel reactor sampling device, which solves the problem that when sampling and adding samples to the reactor, it is necessary to break the vacuum, open the manhole and stop stirring.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel reactor sampling device comprises a reactor body, the bottom end of the reactor body is connected to a hollow liquid collecting tank through a sampling guide tube, a connecting plate is fixedly connected to the inner wall of the liquid collecting tank, one end of the connecting plate is fixedly connected to a cup holder, a plurality of leakage holes are provided at the bottom of the cup holder, and a quick-opening flange is connected to the outer peripheral wall of the liquid collecting tank.

[0007] Preferably, the top end of the liquid collecting tank is connected to an inert gas pipe, and the inert gas pipe is connected to an inert gas valve.

[0008] Preferably, the top end of the liquid collecting tank is connected to a tail gas pipe, and the tail gas pipe is connected to a tail gas valve.

[0009] Preferably, the sampling guide tube is connected to a reflux tube, the reflux tube is connected to a drain tube, one end of the drain tube is connected to the bottom end of the liquid collecting tank, and the drain tube is connected to a reflux valve.

[0010] Preferably, one end of the reflux pipe away from the sampling guide pipe is connected to a discharge valve.

[0011] Preferably, a sight glass is connected to the quick-opening flange.

[0012] Preferably, the sampling guide tube is connected to a maintenance valve and a vacuum isolation valve.

[0013] Preferably, a vacuum pressure gauge is connected to the top of the liquid collecting tank.

[0014] By means of the above technical solution, the utility model provides a novel reaction kettle sampling device, which has at least the following beneficial effects:

[0015] (1) The new reactor sampling device is convenient for placing the sampling cup on the cup holder by setting a quick-opening flange, and then realizing accurate sampling through the sampling guide tube, so as to achieve continuous stirring sampling without breaking the vacuum, avoid frequent vacuum start and stop to affect the stability of the equipment, and also make the operation simpler and faster, saving manpower.

[0016] (2) The sampling chamber of this new reactor sampling device adopts a quick-opening flange with a test mirror, which is convenient for observing the liquid state in the sampling cup. By setting up an inert gas pressure stabilization system, the internal pressure of the liquid collection tank can be accurately adjusted to control the replacement liquid and sample reflux. Through the exhaust system, the unorganized gas in the sampling process can be collected to achieve environmentally friendly sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of the reaction kettle and the liquid collecting tank in the embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a connecting plate and a cup holder in an embodiment of the utility model.

[0021] In the figure: 1. Reactor body; 2. Liquid collecting tank; 3. Sampling guide tube; 4. Quick-opening flange with sight glass; 5. Connecting plate; 6. Cup holder; 7. Sampling cup; 8. Reflux pipe; 9. Drain pipe; 10. Inert gas pipe; 11. Tail gas pipe; 12. Vacuum pressure gauge; 13. Inspection valve; 14. Vacuum isolating valve; 15. Tail gas valve; 16. Inert gas valve; 17. Reflux valve; 18. Discharge valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Generally, sampling of reactors is done at normal pressure. Sampling is done by hanging liquid from the top using a sampling container, which is cumbersome and requires breaking the vacuum, opening the manhole and stopping stirring. After sampling, the manhole needs to be closed and stirring and vacuum started again, which is time-consuming and labor-intensive. Frequent starting and stopping of the vacuum is not conducive to equipment stability.

[0024] Generally, trace raw materials are added through manholes to ensure the accuracy of the addition. Adding samples requires opening the manhole and stopping stirring, which is time-consuming and labor-intensive, and requires attention to whether the material will stick to the wall.

[0025] To do this, see Figure 1-Figure 3 The utility model provides a novel reactor sampling device, which comprises a reactor body 1. The reactor body 1 is used for material reaction. A stirring device is arranged in the reactor body 1 for stirring the material.

[0026] The bottom of the reactor body 1 is connected to the hollow liquid collecting tank 2 through the sampling guide tube 3. A connecting plate 5 is fixedly connected to the inner wall of the liquid collecting tank 2. One end of the connecting plate 5 is fixedly connected to a cup holder 6, which is used to place a sampling cup 7. The center line of the cup holder 6 coincides with the center line of the sampling guide tube 3, so that the sampling guide tube 3 can accurately guide the material into the sampling cup 7. The cup holder 6 is cylindrical and has multiple leak holes at the bottom, so that before formal sampling, the residual liquid in the sampling guide tube 3 can flow to the bottom of the liquid collecting tank 2 through the cup holder 6 to ensure that the sampling is representative.

[0027] Combination Figure 2 As shown, the bottom end of the sampling guide tube 3 extends to above the sampling cup 7 inside the liquid collecting tank 2, so as to avoid liquid splashing due to the large distance between the end of the sampling guide tube 3 and the sampling cup 7.

[0028] A quick-open flange 4 is connected to the outer peripheral wall of the liquid collecting tank 2, and the quick-open flange can be opened quickly to facilitate the placement of the sampling cup 7. The quick-open flange 4 is provided with a sight glass, through which the liquid state in the sampling cup 7 can be observed.

[0029] The sampling guide pipe 3 is connected with a check valve 13 and a vacuum isolation valve 14. The check valve 13 is located above the vacuum isolation valve 14 and is used to temporarily isolate the pipeline for maintenance and repair of equipment and pipelines. It can also be closed within a limited time as needed to deal with emergencies. The vacuum isolation valve 14 is used to prevent the medium from flowing back and protect the medium or equipment behind it from being contaminated.

[0030] A vacuum pressure gauge 12 is connected to the top of the liquid collecting tank 2 to monitor the internal pressure of the liquid collecting tank 2 .

[0031] As one embodiment, the novel reactor sampling device also includes an inert gas pressure stabilization system.

[0032] Specifically, the inert gas pressure stabilization system includes an inert gas pipe 10, one end of which is connected to the top of the liquid collecting tank 2, and an inert gas valve 16 is connected to the inert gas pipe 10. After the inert gas valve 16 is opened, inert gas can be introduced into the liquid collecting tank 2 to adjust the gas pressure in the liquid collecting tank 2. The inert gas is preferably nitrogen.

[0033] As one embodiment, the novel reactor sampling device also includes an exhaust gas system.

[0034] Specifically, the exhaust system includes an exhaust pipe 11, one end of which is connected to the top of the liquid collecting tank 2, and an exhaust valve 15 is connected to the exhaust pipe 11, so that the exhaust gas from the liquid collecting tank 2 can be discharged outside the device and absorbed by an external device (not shown in the figure) to achieve environmentally friendly sampling.

[0035] As one embodiment, the novel reactor sampling device also includes a replacement liquid recovery system.

[0036] Specifically, the replacement liquid recovery system includes a reflux pipe 8 and a drain pipe 9, one end of the reflux pipe 8 is connected to the sampling guide pipe 3, and is located between the inspection valve 13 and the vacuum isolation valve 14. One end of the drain pipe 9 is connected to the bottom end of the liquid collecting tank 2, and the other end is connected to the reflux pipe 8, and the drain pipe 9 is connected to a reflux valve 17, so that the replacement liquid in the liquid collecting tank 2 can be re-drawn into the reactor body 1 through the drain pipe 9, the reflux pipe 8 and the sampling guide pipe 3, and recovered.

[0037] In addition, one end of the reflux pipe 8 away from the sampling guide pipe 3 is connected to a discharge valve 18, which can discharge the liquid in the liquid collecting tank 2 when necessary.

[0038] When the novel reactor sampling device of the utility model is in use, the inspection valve 13 is in a normally open state and is closed only in the inspection state. The sampling process is described below:

[0039] 1. Replacement: Open the vacuum isolation valve 14, the liquid collecting tank 2 is evacuated, and the liquid in the reactor body 1 flows into the liquid collecting tank 2 by gravity. This process completes the replacement of the sampling guide tube 3, and the replacement material flows to the bottom of the liquid collecting tank 2 through the porous cup holder 6 to ensure that the sampling is representative;

[0040] 2. Place the sampling cup 7: Close the vacuum isolation valve 14, open the inert gas valve 16, use inert gas to break the vacuum to normal pressure, then open the tail gas valve 15, the tail gas of the liquid collecting tank 2 is absorbed by the tail gas, and a slight negative pressure is formed in the liquid collecting tank 2. Open the quick-opening flange 4 with a sight glass, place the sampling cup 7 on the porous cup holder 6, and close the quick-opening flange 4 with a sight glass;

[0041] 3. Sampling: Close the tail gas valve 15, open the vacuum isolation valve 14, the material enters the sampling cup 7 through the sampling guide tube 3, observe the sampling status through the quick-opening flange 4 with sight glass, and when the sampling is finished, close the vacuum isolation valve 14, open the inert gas valve 16, use inert gas to break the vacuum to normal pressure, and then open the tail gas valve 15, the tail gas of the liquid collecting tank 2 is absorbed through the tail gas pipe 11, and the liquid collecting tank 2 forms a slight negative pressure, open the quick-opening flange 4 with sight glass, take out the sample, and close the quick-opening flange 4 with sight glass;

[0042] 4. Reflux of replacement liquid: open the reflux valve 17, open the inert gas valve 16, and draw the material in the liquid collecting tank 2 back to the reactor through the reflux pipe 8. When the material drawing is completed, close the reflux valve 17 and the inert gas valve 16;

[0043] The vacuum loading process is described below:

[0044] 1. Adding samples: open the quick-open flange 4 with sight glass, add the required materials to the bottom of the liquid collecting tank 2, and then close the quick-open flange 4 with sight glass;

[0045] 2. Extraction: Open the reflux valve 17, open the inert gas valve 16, and extract the material to be added in the liquid collecting tank 2 back to the reactor through the reflux pipe 8;

[0046] 3. Dilution residue: close the inert gas valve 16, close the reflux valve 17, open the vacuum isolation valve 14, the material in the reactor enters the liquid collecting tank 2, close the vacuum isolation valve 14, and complete the dilution;

[0047] 4. Dilution liquid enters the reactor: open the reflux valve 17, open the inert gas valve 16, and draw the material in the liquid collecting tank 2 back to the reactor through the reflux pipe 8. After the material drawing is completed, close the reflux valve 17 and the inert gas valve 16.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel reactor sampling device, comprising a reactor body (1), characterized in that: The bottom end of the reactor body (1) is connected to a liquid collecting tank (2) via a sampling guide tube (3); a connecting plate (5) is fixedly connected to the inner wall of the liquid collecting tank (2); one end of the connecting plate (5) is fixedly connected to a cup holder (6); a plurality of leakage holes are provided at the bottom of the cup holder (6); and a quick-opening flange (4) is connected to the outer peripheral wall of the liquid collecting tank (2).

2. The novel reactor sampling device according to claim 1 is characterized in that: The top end of the liquid collecting tank (2) is connected to an inert gas pipe (10), and the inert gas pipe (10) is connected to an inert gas valve (16).

3. The novel reactor sampling device according to claim 1 is characterized in that: The top end of the liquid collecting tank (2) is connected to a tail gas pipe (11), and the tail gas pipe (11) is connected to a tail gas valve (15).

4. The novel reactor sampling device according to claim 1 is characterized in that: The sampling guide pipe (3) is connected to a reflux pipe (8), the reflux pipe (8) is connected to a drainage pipe (9), one end of the drainage pipe (9) is connected to the bottom end of the liquid collecting tank (2), and the drainage pipe (9) is connected to a reflux valve (17).

5. The novel reactor sampling device according to claim 4 is characterized in that: One end of the reflux pipe (8) away from the sampling guide pipe (3) is connected to a discharge valve (18).

6. The novel reactor sampling device according to claim 1 is characterized in that: The quick-opening flange (4) is connected with a sight glass.

7. The novel reactor sampling device according to claim 1 is characterized in that: The sampling flow guide pipe (3) is connected to a maintenance valve (13) and a vacuum isolation valve (14).

8. The novel reactor sampling device according to any one of claims 1 to 7, characterized in that: The top of the liquid collecting tank (2) is connected to a vacuum pressure gauge (12).

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