A vacuum sampling device for high risk reactions

Abstract

The utility model discloses a vacuum sampling device of high risk reaction, include: reaction kettle, sampling valve, vacuum system, nitrogen system, sampling bottle, wherein, the reaction kettle with sampling valve connects, nitrogen system with sampling valve connects, sampling valve with sampling bottle connects, vacuum system directly with sampling bottle connects. The utility model relates to equipment less, low in cost, and the transformation is simple. The on -line long -distance sampling of liquid-liquid two -phase high risk reaction can be realized, and sampling safety is high. Can carry out the separation of liquid-liquid two -phase while sampling, and sampling efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and more specifically to a vacuum sampling device for high-risk reactions. Background Technology

[0002] In the fields of fine chemicals, pharmaceuticals, and new materials synthesis, there are many dangerous chemical reactions involving the violent release of energy. These reactions are usually two-phase reactions, involving the transformation of highly reactive substances such as nitration, oxidation, and fluorination, and are characterized by complex reaction kinetics and a significant risk of thermal runaway.

[0003] For high-risk liquid-liquid two-phase reactions, sampling should avoid stopping stirring and directly taking samples through manholes. Furthermore, a certain sampling distance should be maintained, and direct contact between sampling personnel and the material should be prevented. Therefore, sampling for high-risk liquid-liquid two-phase reactions presents certain operational challenges. To address these issues, an efficient, simple, and safe sampling method needs to be developed. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum sampling device for high-risk reactions. The vacuum sampling device for high-risk reactions provided by this invention has a simple structure, is easy to modify, and helps improve the uniformity of sampling, thereby increasing the safety of sampling during high-risk reactions.

[0005] Therefore, one objective of this utility model is to provide a vacuum sampling device for high-risk reactions, characterized in that it includes: a reaction vessel, a sampling valve, a vacuum system, a nitrogen system, and a sampling bottle;

[0006] The reaction vessel is connected to the sampling valve;

[0007] The nitrogen system is connected to the sampling valve; the sampling valve is connected to the sampling bottle;

[0008] The vacuum system is directly connected to the sampling bottle.

[0009] This invention achieves the purpose of long-distance sampling by using vacuum sampling, nitrogen purging, and timely sample separation, thereby improving sampling safety.

[0010] Preferably, a nitrogen regulating manual valve is installed on the pipeline connecting the nitrogen system and the sampling valve. This allows for real-time adjustment of the purging air volume and purging time at the sampling point.

[0011] Preferably, a vacuum regulating valve is provided on the pipeline connecting the vacuum system and the sampling bottle. This allows for effective adjustment of the vacuum level, thereby controlling the sample flow rate during sampling.

[0012] Preferably, the above-mentioned vacuum sampling device further includes: a sampling bottle vent valve;

[0013] The vent valve of the sampling bottle is directly connected to the sampling bottle.

[0014] Preferably, the vacuum sampling device further includes: a sampling bottle fixing port, wherein the sampling bottle fixing port is threadedly connected to the bottle mouth of the sampling bottle, and a silicone sealant is provided at the bottom of the sampling bottle fixing port.

[0015] Preferably, inside the sampling bottle, the length of the tubing corresponding to the sampling valve is greater than the length of the tubing corresponding to the vacuum system. This prevents material from entering the vacuum system during sampling.

[0016] Preferably, the volume of the sampling bottle is <1L. This can effectively reduce the amount of hazardous materials online.

[0017] Preferably, the sampling bottle has a separating funnel structure. This allows for rapid liquid-liquid separation at the sampling point, effectively reducing the risks caused by interfacial reactions without stirring.

[0018] Preferably, the sampling bottle is provided with a sampling bottle dispensing valve at the bottom.

[0019] Preferably, the sampling bottle is made of borosilicate glass.

[0020] As can be seen from the above technical solution, compared with the prior art, this utility model has the following technical effects:

[0021] 1. This device involves few pieces of equipment, has low cost, and is easy to modify.

[0022] 2. This device can achieve online remote sampling of high-risk liquid-liquid two-phase reactions, with high sampling safety.

[0023] 3. This device can separate liquid and liquid phases simultaneously during sampling, resulting in high sampling efficiency. Attached Figure Description

[0024] 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 A schematic diagram of the vacuum sampling device provided by this utility model;

[0026] Figure 2 A schematic diagram of the sampling bottle fixing port structure;

[0027] In the figure:

[0028] 1-Reaction vessel; 2-Sampling valve; 3-Nitrogen system; 31-Nitrogen regulating manual valve; 4-Vacuum system; 41-Vacuum regulating manual valve; 5-Sampling bottle; 51-Sampling bottle dispensing valve; 6-Sampling bottle fixing port; 61-Silicone seal; 7-Sampling bottle vent valve. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Example 1

[0035] This embodiment provides a vacuum sampling device for high-risk reactions, including: a reaction vessel 1, a sampling valve 2, a vacuum system 4, a nitrogen system 3, a sampling bottle 5, a sampling bottle fixing port 6, and a sampling bottle venting valve 7.

[0036] Among them, the reaction vessel 1 is connected to the sampling valve 2;

[0037] Nitrogen system 3 is connected to sampling valve 2; sampling valve 2 is connected to sampling bottle 5;

[0038] Vacuum system 4 is directly connected to sampling bottle 2.

[0039] In this embodiment, a nitrogen regulating manual valve 31 is provided on the pipeline connecting the nitrogen system 3 and the sampling valve 2.

[0040] A vacuum regulating valve 41 is installed on the pipeline connecting the vacuum system 4 and the sampling bottle 5.

[0041] The vent valve 7 of the sampling bottle is directly connected to the sampling bottle 5.

[0042] The sampling bottle fixing port 6 is threadedly connected to the bottle mouth of the sampling bottle 5, and a silicone sealant 61 is provided at the bottom of the sampling bottle fixing port 6.

[0043] Inside the sampling bottle 5, the length of the pipeline corresponding to the sampling valve 2 is greater than that of the pipeline corresponding to the vacuum system 4.

[0044] The volume of sampling bottle 5 is <1L.

[0045] The sampling bottle 5 has a separating funnel structure and a sampling bottle separating valve 51 at the bottom. It is made of borosilicate glass.

[0046] Example 2

[0047] This embodiment provides a method for using a vacuum sampling device for high-risk reactions, including:

[0048] 1. During normal reaction in reactor 1, stirring does not stop until the reaction is complete.

[0049] 2. Open sampling valve 2, and slowly open vacuum regulating valve 41 to the appropriate opening degree. The reactant is drawn into sampling bottle 5 by vacuum. When the liquid level in sampling bottle 5 is 30-50%, close vacuum regulating valve 41 to stop sampling.

[0050] 3. Slowly open the nitrogen regulating valve 31 to the appropriate opening, purge for 10-30 seconds and close the sampling valve 2; continue purging for 30-60 seconds and close the nitrogen regulating valve 31.

[0051] 4. Slowly open the vent valve 7 of the sampling bottle, unscrew the sampling bottle 5 from the sampling bottle fixing port 61, control the liquid separation valve 71 of the sampling bottle, and put the separated liquid-liquid two phases into two conventional sample bottles respectively.

[0052] 5. Tighten the clean spare sampling bottle 5 to the sampling bottle fixing port 6, and prepare for the next sampling; wash, disinfect, dry and set aside the original sampling bottle.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A vacuum sampling device for high-risk reactions, characterized in that, include: Reactor, sampling valve, vacuum system, nitrogen system, sampling bottle; The reaction vessel is connected to the sampling valve; The nitrogen system is connected to the sampling valve; the sampling valve is connected to the sampling bottle; The vacuum system is directly connected to the sampling bottle.

2. The vacuum sampling device for high-risk reactions according to claim 1, characterized in that, A nitrogen regulating manual valve is installed on the pipeline connecting the nitrogen system and the sampling valve.

3. The vacuum sampling device for high-risk reactions according to claim 1, characterized in that, A vacuum regulating valve is installed on the pipeline connecting the vacuum system and the sampling bottle.

4. The vacuum sampling device for high-risk reactions according to claim 1, characterized in that, Also includes: Sampling bottle vent valve; The vent valve of the sampling bottle is directly connected to the sampling bottle.

5. The vacuum sampling device for high-risk reactions according to claim 4, characterized in that, Also includes: The sampling bottle fixing port is threadedly connected to the bottle mouth of the sampling bottle, and a silicone seal is provided at the bottom of the sampling bottle fixing port.

6. The vacuum sampling device for high-risk reactions according to claim 5, characterized in that, Inside the sampling bottle, the length of the pipeline corresponding to the sampling valve is greater than that of the pipeline corresponding to the vacuum system.

7. The vacuum sampling device for high-risk reactions according to claim 6, characterized in that, The volume of the sampling bottle is <1L.

8. The vacuum sampling device for high-risk reactions according to claim 7, characterized in that, The sampling bottle has a separatory funnel structure.

9. A vacuum sampling device for high-risk reactions according to claim 8, characterized in that, The sampling bottle is equipped with a sampling bottle dispensing valve at the bottom.

10. A vacuum sampling device for high-risk reactions according to claim 9, characterized in that, The sampling bottle is made of borosilicate glass.

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