Multi-stage distillation kettle for chemical industry

Abstract

The utility model relates to a multistage distillation kettle for chemical industry, which belongs to the technical field of chemical industry production and comprises a distillation kettle body, a reflux inlet is arranged on the side wall of the distillation kettle body, an air outlet is arranged on the top wall of the distillation kettle body, and a reflux pipe is arranged at the reflux inlet. One end of the condenser is connected with the air outlet through a pipeline; one end of the condensing pipe is connected to the bottom of the condenser, and the other end of the condensing pipe is connected with the return pipe through a connecting pipe, so that part of condensate in the condenser is fed into the return pipe; and the sealing box is mounted between the return pipe and the condensation pipe, and the connecting pipe is sleeved with the sealing box for sealing. Therefore, the multi-stage distillation kettle for the chemical industry can reduce the probability of leakage of a return pipeline consisting of the condensation pipe and the return pipe, and is safer to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production, and particularly relates to a multi-stage distillation kettle for chemical industry. Background Art

[0002] In the chemical production process, distillation is a commonly used separation and purification technology. Its basic principle is based on the different boiling points of the components in the liquid mixture. The mixture is boiled by heating and the generated vapor is condensed back into liquid to achieve the separation of different components.

[0003] The difference between a multi-stage still and a conventional still is whether a reflux pipeline is provided, that is, whether a reflux is provided between the still and the condenser. Specifically, the steam discharged from the still of the current multi-stage still enters the condenser from the top thereof for condensation, and the partially condensed product flows back into the still through the reflux pipeline, and the reflux pipeline includes a condensing pipe connected to the condenser and a reflux pipe connected to the still. However, the current reflux pipe and the condensing pipe are only connected by a flange, and leakage is easily generated at the connection part, thereby affecting the working quality and distillation efficiency of the multi-stage still.

[0004] Based on this, a distillation kettle which can better avoid leakage at the connection part with the reflux pipeline is in urgent need of appearing. Utility Model Content

[0005] The utility model provides a multi-stage distillation kettle for chemical industry, which is used to solve the technical problem that the gas generated by distillation in the existing distillation kettle is easy to leak through the connection part between the condenser and the reflux pipe during distillation.

[0006] The utility model is realized by the following technical scheme: a multi-stage distillation kettle for chemical industry, comprising:

[0007] A distillation kettle body, wherein the side wall of the distillation kettle body is provided with a reflux port, the top wall is provided with an air outlet, and the reflux port is provided with a reflux pipe;

[0008] A condenser, one end of which is connected to the gas outlet through a pipeline;

[0009] A condenser pipe, one end of which is connected to the bottom of the condenser, and the other end of which is connected to the reflux pipe through a connecting pipe, so as to send part of the condensate in the condenser into the reflux pipe;

[0010] A sealing box is installed between the reflux pipe and the condenser pipe, and the sealing box is sleeved outside the connecting pipe for sealing.

[0011] Optionally, the sealing box comprises:

[0012] A first box body has a first cavity, and outer walls on any two opposite sides of the first box body are provided with engaging grooves;

[0013] The second box body has a second cavity, wherein the first cavity and the second cavity are surrounded to form a sealed cavity;

[0014] Two buckles are installed on the second box body and located outside the second cavity. The two buckles correspond to the engaging grooves one by one. The buckles are engaged in the engaging grooves to fix the second box body on the first box body.

[0015] Optionally, the buckle includes:

[0016] An elastic plate, one end of which is mounted on the second box body;

[0017] A clamping block is installed on the end of the elastic plate away from the second box body, the width of the clamping block gradually decreases from the end of the clamping block close to the elastic plate to the end away from the elastic plate, the clamping groove extends along the outer wall direction of any opposite sides of the first box body, the two ends of the clamping groove pass through the first box body, and the clamping block moves along the extension direction of the clamping groove so that the clamping block slides out of the clamping groove.

[0018] Optionally, it also includes:

[0019] A sealing convex strip, wherein a sealing groove is formed on one end of the first box body close to the second box body, and the sealing convex strip is installed in the sealing groove;

[0020] A sealing column is installed on one end of the second box body close to the first box body. The sealing column extends into the sealing groove and abuts against the sealing convex strip to seal the sealing cavity.

[0021] Optionally, the first box body includes:

[0022] A first plate body;

[0023] The first frame is installed on the first plate. The first frame and the first plate are arranged to form a first cavity. The locking groove is provided on the outer walls of any two opposite sides of the first frame. The sealing groove is provided on one end of the first frame away from the first plate.

[0024] Optionally, the second box body includes:

[0025] A second plate;

[0026] The second frame is mounted on the second plate. The second frame and the second plate are arranged to form a second cavity. The buckle is mounted on the second plate and outside the second frame. The sealing column is mounted on the second frame.

[0027] Optionally, it also includes:

[0028] The detection component is installed in the sealed cavity to detect the state in the sealed cavity.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] The utility model provides a multi-stage distillation kettle for chemical industry, comprising a distillation kettle body, a condenser, a condensation pipe and a sealing box. The side wall of the distillation kettle body is provided with a reflux port, the top wall is provided with an air outlet, a reflux pipe is provided at the reflux port, one end of the condenser is connected with the air outlet through a pipeline, the light component distilled from the distillation kettle body enters the condenser through the pipeline from the air outlet to condense into condensate, one end of the condensation pipe is connected to the bottom of the condenser, and the other end is connected with the reflux pipe through a connecting pipe, so that part of the condensate in the condenser is sent to the reflux pipe, and then refluxed to the distillation kettle body through the reflux pipe, the sealing box is installed between the reflux pipe and the condensation pipe, and the sealing box is sleeved outside the connecting pipe for sealing.

[0031] Through the above structure, when the multi-stage distillation kettle for chemical industry provided by the utility model is used, the liquid to be distilled is added into the distillation kettle body for distillation, and the light components distilled out enter the condenser through the pipeline from the gas outlet to condense into condensate, and part of the condensate flows back to the distillation kettle body through the condenser pipe and the reflux pipe, and the sealing box seals the connection part of the reflux pipe and the condenser pipe (that is, the connecting pipe) in the sealing cavity to reduce the leakage of gas through the connection part of the condenser pipe and the reflux pipe. Therefore, the multi-stage distillation kettle for chemical industry can reduce the possibility of gas leakage and is safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of the structure of a multi-stage distillation kettle for chemical industry provided by the utility model;

[0034] Figure 2 It is a structural schematic diagram of a sealing box in an embodiment of the utility model;

[0035] Figure 3 This is a schematic diagram of the structure of the first box body in the embodiment of the utility model;

[0036] Figure 4 It is a structural schematic diagram of the second box body in the embodiment of the utility model;

[0037] Figure 5 is a cross-sectional view of a sealing box in an embodiment of the utility model;

[0038] Figure 6 It is a schematic diagram of the enlarged structure of the A area in the embodiment of the utility model;

[0039] Figure 7 It is another cross-sectional view of the sealing box in the embodiment of the utility model.

[0040] In the figure:

[0041] 1-distillation kettle body; 2-reflux pipe; 3-condenser; 4-sealing box; 41-first box body; 411-first plate body; 412-first frame body; 42-second box body; 421-second plate body; 422-second frame body; 43-clip; 431-elastic plate; 432-clamping block; 5-sealing convex strip; 6-sealing column; 7-detection piece; 8-sealing gasket; 9-condenser; 10-connecting pipe; 11-reboiler. DETAILED DESCRIPTION

[0042] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. Example

[0046] The utility model provides a multi-stage distillation kettle for chemical industry, which is used to solve the technical problem that the gas generated by distillation in the existing distillation kettle is easy to leak through the connection part between the condenser and the reflux pipe during distillation. The multi-stage distillation kettle for chemical industry comprises a distillation kettle body 1, a condenser 3, a reflux pipe 2 and a sealing box 4, wherein:

[0047] The distillation kettle body 1 is the same as the existing distillation kettle, with a partition arranged inside and an air outlet arranged on the top, a reflux port arranged on one side wall, a feed port arranged on the other side wall, and a reflux pipe 2 arranged at the reflux port. Specifically, the distillation kettle body 1 is connected to a reboiler 11, which is used to vaporize the liquid in the distillation kettle body 1 again.

[0048] One end of the condenser 9 is connected to the gas outlet through a pipeline so that the light components distilled from the still body 1 can be sent to the condenser 9, and the steam entering the condenser 9 is condensed into condensate (i.e., distillation product). One end of the condenser pipe 3 is installed at the bottom of the condenser 9, and the other end is connected to the reflux pipe 2 through a connecting pipe 10 so that part of the condensate in the condenser 9 can be sent to the reflux pipe 2 and guided into the still body 1 through the reflux pipe 2.

[0049] Specifically, Figure 1 He Ru Figure 3 As shown, the connection between the return pipe 2 and the connecting pipe 10 in this embodiment is welding, and the connection between the condenser pipe 3 and the connecting pipe 10 is screwed. It is worth noting that the return pipe 2, the connecting pipe 10 and the condenser pipe 3 constitute a return pipeline.

[0050] The sealing box 4 has a sealing cavity, which is installed between the reflux pipe 2 and the condenser 3. The sealing box 4 is sleeved outside the above-mentioned connecting pipe 10. The sealing box 4 is used to reduce the leakage of gas through the connecting part between the reflux pipe 2 and the condenser 3, thereby making the distillation safer.

[0051] Through the above structure, when the multi-stage distillation kettle for chemical industry provided by this embodiment is used, the liquid to be distilled is added into the distillation kettle body 1 for distillation, and the light components distilled out enter the condenser 9 through the pipeline from the gas outlet to condense and form condensate, and part of the condensate flows back to the distillation kettle body 1 through the condenser pipe 3 and the reflux pipe 2, and the sealing box 4 seals the connection part of the reflux pipe 2 and the condenser pipe 3 (that is, the connecting pipe 10) in the sealing cavity to reduce the leakage of gas through the connection part of the condenser pipe 3 and the reflux pipe 2. Therefore, the multi-stage distillation kettle for chemical industry can reduce the possibility of gas leakage and is safer to use.

[0052] An optional implementation of this embodiment is as follows: the sealing box 4 includes a first box body 41, a second box body 42 and a buckle 43, wherein:

[0053] The first box body 41 has a first cavity, and outer walls on any two opposite sides of the first box body 41 are provided with snap-fit ​​grooves. During distillation, the reflux pipe 2, the condenser pipe 3 and the connecting pipe 10 are all located in the first cavity, thereby reducing gas leakage outside the sealed cavity during distillation.

[0054] The second box body 42 has a second cavity, and the first cavity and the second cavity are surrounded to form a sealed cavity. During distillation, the reflux pipe 2, the condenser 3 and the connecting pipe 10 are all located in the sealed cavity formed by the first cavity and the second cavity, so as to reduce the gas leakage to the outside of the sealed cavity during distillation. The first box body 41 and the second box body 42 are used to facilitate the installation of the connecting pipe 10 in the sealed cavity.

[0055] There are two clips 43, both of which are installed on the second box body 42, and both of which are located outside the second cavity. The two clips 43 correspond to the snap-fit ​​grooves one by one, and the clips 43 are snapped into the snap-fit ​​grooves to fix the second box body 42 on the first box body 41, thereby facilitating the fixation of the first box body 41 and the second box body 42.

[0056] An optional implementation of this embodiment is as follows: the buckle 43 includes an elastic plate 431 and a clamping block 432, wherein one end of the elastic plate 431 is mounted on the second box body 42, and the clamping block 432 is mounted on the end of the elastic plate 431 away from the second box body 42, and the width of the clamping block 432 gradually decreases from the end of the clamping block 432 close to the elastic plate 431 to the end away from the elastic plate 431, and correspondingly, the width of the clamping groove gradually decreases from the end of the first box body 41 close to the second box body 42 to the end away from the second box body 42, and the number of the clamping groove and the clamping block 432 can be multiple, and the clamping block 432 is clamped in the clamping groove, so as to clamp the first box body 41 The second box body 42 is fixed to the second box body 42, thereby reducing the movement of the second box body 42 away from the first box body 41, and thereby better fixing the second box body 42 on the first box body 41. The locking groove extends along the outer wall direction of any opposite sides of the first box body 41, and both ends of the locking groove penetrate the first box body 41. The locking block 432 moves along the extension direction of the locking groove so that the locking block 432 slides to the outside of the locking groove, and the locking block 432 can be separated from the locking groove, thereby separating the first box body 41 and the second box body 42, thereby facilitating the separation of the first box body 41 and the second box body 42, and at the same time, the first box body 41 and the second box body 42 can be reused repeatedly.

[0057] An optional implementation of the present embodiment is as follows: in order to further improve the sealing effect of the sealing box 4, the multi-stage distillation kettle for chemical use also includes a sealing ridge 5 and a sealing column 6, wherein the sealing ridge 5, a sealing groove is opened on one end of the first box body 41 close to the second box body 42, the sealing ridge 5 is installed in the sealing groove, and the sealing ridge 5 can be made of silicone material; the sealing column 6 is installed on one end of the second box body 42 close to the first box body 41, when in use, the second box body 42 moves toward the direction of the first box body 41, the sealing column 6 extends into the sealing groove, and abuts against the sealing ridge 5 to seal the sealing cavity, reduce the gas leakage to the outside of the sealing cavity through the gap between the first box body 41 and the second box body 42, the clamping block 432 is clamped in the clamping groove, so that the sealing column 6 is tightly abutted against the sealing ridge 5, thereby providing sealing performance.

[0058] In the embodiment of the utility model, in order to reduce the leakage of gas through the connection part between the condenser 3 and the return pipe 2, a groove body is provided between the opposite sides of the first box body 41 and the second box body 42, and a sealing gasket 8 is installed in the groove body. The sealing gasket 8 abuts against the return pipe 2 and the condenser 3, and the sealing gaskets 8 in the first box body 41 and the second box body 42 abut against each other. The sealing gaskets 8 in the first box body 41 and the second box body 42 abut against the sealing ridge 5, thereby reducing the leakage of gas through the gap between the return pipe 2 and the condenser 3 and the sealing box 4, so as to improve the sealing performance.

[0059] An optional implementation of this embodiment is as follows: the first box body 41 includes a first plate body 411 and a first frame body 412, the first frame body 412 is installed on any side of the first plate body 411, the first frame body 412 and the first plate body 411 are arranged to form a first cavity, the locking groove is opened on the outer wall of any two opposite sides of the first frame body 412, and the sealing groove is opened on one end of the first frame body 412 away from the first plate body 411.

[0060] An optional implementation of this embodiment is as follows: the second box body 42 includes a second plate body 421 and a second frame body 422, the second frame body 422 is installed on any side of the second plate body 421, the second frame body 422 and the second plate body 421 are surrounded to form a second cavity, the buckle 43 is installed on the second plate body 421 and is located outside the second frame body 422, and the sealing column 6 is installed on the second frame body 422.

[0061] An optional implementation of the present embodiment is as follows: In order to facilitate the detection of whether the gas is leaked in the sealed cavity, the chemical multi-stage distillation kettle also includes a detection component 7, which is installed in the sealed cavity. The detection component 7 can extend out of the sealed cavity. Specifically, the detection component 7 can be a pressure sensor or a sensor for detecting the distilled gas, so as to detect whether the gas pressure in the sealed cavity increases or whether the sealed cavity contains distilled gas, and then determine whether the distilled gas is leaked.

[0062] In summary, when a multi-stage distillation kettle for chemical industry provided by the utility model is used, the liquid to be distilled is added into the distillation kettle body 1 for distillation. The steam generated during the distillation of the liquid in the distillation kettle body 1 is condensed through the condenser 10 to form a condensate. Part of the condensate enters the condenser pipe 3, and then enters the reflux pipe 2, and then refluxes to the distillation kettle body 1 through the reflux pipe 2. The sealing box 4 seals the reflux pipe 2, the condenser pipe 3 and the connecting pipe 10 in the sealing cavity to reduce the leakage of gas through the connection parts between the reflux pipe 2, the condenser pipe 3 and the connecting pipe 10. When the sealing box 4 is disassembled, the first box body 41 and the second box body 42 are moved in the opposite direction, and the clamping block 432 moves along the extension direction of the engaging groove so that the engaging block 432 slides out of the engaging groove, and the engaging block 432 can be separated from the engaging groove, thereby separating the first box body 41 and the second box body 42, so as to facilitate the separation of the first box body 41 and the second box body 42, and the first box body 41 and the second box body 42 can be reused repeatedly. When installing the sealing box 4, the condenser tube 3 is installed in the sealing cavity, and the second box body 42 moves toward the direction of the first box body 41, so that the engaging block 432 is engaged in the engaging groove, thereby fixing the second box body 42 on the first box body 41, and the detection member 7 is used to detect whether the gas in the sealing cavity is leaked. Therefore, the multi-stage distillation kettle for chemical use can reduce the possibility of gas leakage during condensation reflux, and is safer to use.

[0063] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-stage distillation kettle for chemical industry, characterized in that: include: A distillation kettle body, wherein the side wall of the distillation kettle body is provided with a reflux port, the top wall is provided with an air outlet, and the reflux port is provided with a reflux pipe; A condenser, one end of which is connected to the gas outlet through a pipeline; A condenser pipe, one end of which is connected to the bottom of the condenser, and the other end of which is connected to the reflux pipe through a connecting pipe, so as to send part of the condensate in the condenser into the reflux pipe; A sealing box is installed between the reflux pipe and the condenser pipe, and the sealing box is sleeved outside the connecting pipe for sealing.

2. A multi-stage distillation kettle for chemical industry according to claim 1, characterized in that: The sealing box comprises: A first box body has a first cavity, and outer walls on any two opposite sides of the first box body are provided with engaging grooves; The second box body has a second cavity, wherein the first cavity and the second cavity are surrounded to form a sealed cavity; Two buckles are installed on the second box body and located outside the second cavity. The two buckles correspond to the engaging grooves one by one. The buckles are engaged in the engaging grooves to fix the second box body on the first box body.

3. A multi-stage distillation kettle for chemical industry according to claim 2, characterized in that: The buckle comprises: An elastic plate, one end of which is mounted on the second box body; A clamping block is installed on the end of the elastic plate away from the second box body, the width of the clamping block gradually decreases from the end of the clamping block close to the elastic plate to the end away from the elastic plate, the clamping groove extends along the outer wall direction of any opposite sides of the first box body, the two ends of the clamping groove penetrate the first box body, and the clamping block moves along the extension direction of the clamping groove so that the clamping block slides out of the clamping groove.

4. A multi-stage distillation kettle for chemical industry according to claim 3, characterized in that: Also includes: A sealing convex strip, wherein a sealing groove is formed on one end of the first box body close to the second box body, and the sealing convex strip is installed in the sealing groove; A sealing column is installed on one end of the second box body close to the first box body. The sealing column extends into the sealing groove and abuts against the sealing convex strip to seal the sealing cavity.

5. A multi-stage distillation kettle for chemical industry according to claim 4, characterized in that: The first box body comprises: A first plate body; The first frame is installed on the first plate. The first frame and the first plate are arranged to form a first cavity. The engaging groove is provided on the outer walls of any two opposite sides of the first frame. The sealing groove is provided on one end of the first frame away from the first plate.

6. A multi-stage distillation kettle for chemical industry according to claim 5, characterized in that: The second box body comprises: A second plate; The second frame is mounted on the second plate. The second frame and the second plate are arranged to form a second cavity. The buckle is mounted on the second plate and outside the second frame. The sealing column is mounted on the second frame.

7. A multi-stage distillation kettle for chemical industry according to claim 2, characterized in that: Also includes: The detection component is installed in the sealed cavity to detect the state in the sealed cavity.

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