Chemical stirring, heating and purifying kettle structure

Abstract

The utility model belongs to the technical field of fine chemical equipment, and particularly relates to a chemical stirring, heating and purifying kettle structure which comprises a kettle body, a gas phase outlet, a steam inlet and a spraying pipe are arranged on the kettle body, a discharging pipe is arranged at the lower end of the kettle body, and a steam outlet is arranged on the discharging pipe. According to the utility model, under the condition that liquid in the kettle is heated, stirred, rectified and evaporated, light components in a material are changed into a gas phase from a liquid phase, the gas is sprayed from bottom to top, and the liquid phase is sprayed from top to bottom, so that sufficient material transfer occurs between the gas phase and the liquid phase, and the effect of rectification separation is achieved; heavy components in the materials pass through the conical stirring evaporation function on the lower portion of the kettle body, the purification effect of the materials is further improved, residues obtained after the materials are evaporated, rectified and separated are conveyed out through the spiral conveyor, the purpose of continuous production without stopping the kettle is achieved, and the production efficiency of fine chemical engineering is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fine chemical equipment, in particular to a chemical stirring heating and purification kettle structure. Background Technique

[0002] In the purification process of silicon tetrachloride in the fine chemical industry, there are production processes such as material heating, stirring and mixing, separation and purification, etc. Multiple devices need to be combined into a production line, and devices such as chemical heating furnaces, reaction kettles, and distillation towers are used. Due to the single structure of traditional reverse heating furnaces, reaction kettles, distillation towers, etc., it is impossible to synchronously perform operations such as material heating, separation and purification during the material stirring and mixing work; due to the general structure of traditional reaction kettles being an overall closed structure, after stirring is completed, the equipment needs to be started and stopped multiple times, and the material needs to be fed and discharged multiple times, which is troublesome to operate, affects the production process, and is likely to cause changes in the state inside the kettle or material leakage during the fine chemical production process.

[0003] Using the above-mentioned reaction kettle for production has the following defects: 1. The reaction kettle has a single function and can only play a stirring function. In the fine chemical production process, stirring, heating, and rectification required cannot be completed simultaneously, and multiple devices are needed to complete the entire process, resulting in low production efficiency; 2. The stirring and mixing effect is poor, and the materials in the kettle are in a single rotation mode and cannot achieve up-and-down and left-and-right tumbling mixing; 3. Crystallization is likely to occur inside the reaction kettle, affecting the heating effect, and only shutdown and maintenance can be used to restore the equipment function, and it cannot achieve long-term and full-load operation; 4. Continuous production cannot be achieved. Starting and stopping the equipment and feeding and discharging materials multiple times are troublesome to operate, affect the production process, and are likely to cause changes in the state inside the kettle or material leakage during the fine chemical production process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a chemical stirring heating and purification kettle structure, which solves the above-mentioned existing problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A chemical stirring heating and purification kettle structure, including a kettle body, a gas phase outlet is arranged on the kettle body, a steam inlet is arranged on the kettle body, a spray pipe is arranged on the kettle body, a feeding pipe is arranged at the lower end of the kettle body, a steam outlet is arranged on the feeding pipe, a feeding pipe is arranged at the lower end of the feeding pipe, a liquid descending distributor is arranged on the kettle body, a heating coil is arranged outside the kettle body, a kettle platform is arranged on the kettle body, a second speed reducer is arranged on the kettle platform, a second motor is arranged on the second speed reducer, a rotating shaft is arranged on the second speed reducer, and a stirring mechanism is arranged on the rotating shaft.

[0006] Preferably, a residue outlet is provided at the lower end of the feeding pipe. A first speed reducer is provided on the feeding pipe, a first motor is provided on the first speed reducer, and a screw feeder is provided on the first speed reducer. The screw feeder is rotatably connected to the feeding pipe, and the residue can be sent out through the residue outlet by the screw feeder.

[0007] Preferably, the stirring mechanism includes an upper tool rest. The upper tool rest is fixedly connected to the outer side of the rotating shaft. The lower tool rest is fixedly connected to the outer side of the rotating shaft. A wire brush is fixedly connected to the end of the upper tool rest away from the rotating shaft. A conical stirrer is fixedly connected to the lower end of the rotating shaft. The conical stirrer is rotatably connected to the feeding pipe. The second motor drives the rotating shaft to rotate through the second speed reducer, so that the rotating shaft drives the upper tool rest and the lower tool rest to rotate, and the rotating shaft drives the conical stirrer to rotate. Under the mixing of the upper and lower stirrers, the liquid is continuously heated and evaporated, and the gas phase goes from bottom to top.

[0008] Preferably, the number of both the upper tool rest and the lower tool rest is two. The two upper tool rests and the two lower tool rests are symmetrically distributed on the rotating shaft. Through the design of the upper tool rest and the lower tool rest, the liquid can be mixed.

[0009] Preferably, the wire brush is fixedly connected to the lower tool rest, and the wire brush contacts the inner wall of the kettle body. Through the design of the wire brush, the upper end of the inner wall of the kettle body can be scraped.

[0010] Preferably, a scraping rake is fixedly connected to the lower end of the lower tool rest, and the scraping rake contacts the inner wall of the kettle body. Through the design of the scraping rake, the lower end of the inner wall of the kettle body can be scraped.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, under the conditions of heating, stirring, rectifying and evaporating the liquid in the kettle, the light components in the material change from liquid phase to gas phase, the gas goes from bottom to top, and the liquid phase sprays from top to bottom, enabling full mass transfer between the gas-liquid two phases, achieving the effect of rectifying separation. The heavy components in the material pass through the conical stirring and evaporating function at the lower part of the kettle body, further improving the purification effect of the material. The residue after evaporation and rectifying separation of the material is sent out through the screw conveyor, achieving the purpose of continuous production without stopping the kettle and improving the production efficiency of fine chemicals.

[0013] 2. In the present utility model, the heavy components in the material generate solid substances and precipitate at the bottom. By arranging a screw conveyor at the lower part to continuously convey the residue after evaporation and rectifying separation of the material out of the kettle, the production requirements of continuous feeding, stirring, heating, rectifying and discharging slag in fine chemical production are met. Description of the Drawings

[0014] Figure 1Schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 of the present utility model Figure 1 front view of the partial structure in;

[0016] Figure 3 of the present utility model Figure 1 schematic diagram of the structure of the stirring mechanism in.

[0017] In the figure: 1, kettle body; 11, gas phase outlet; 12, steam inlet; 13, spray pipe; 14, feeding pipe; 15, steam outlet; 16, feeding pipe; 161, residue outlet; 17, first motor; 18, first reducer; 19, screw feeder; 2, downcomer distributor; 3, heating coil; 4, kettle platform; 41, second motor; 42, second reducer; 43, rotating shaft; 5, stirring mechanism; 51, upper tool rest; 52, lower tool rest; 53, wire brush; 54, scraping rake; 55, conical stirrer. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3, A chemical stirring, heating and purification kettle structure, including a kettle body 1. A gas phase outlet 11 is provided on the kettle body 1. A steam inlet 12 is provided on the kettle body 1. A spray pipe 13 is provided on the kettle body 1. The spray pipe 13 is annular, with uniformly drilled holes of φ12mm on the lower side of the pipe. Materials are sprayed into the kettle body 1 through the spray pipe 13, and the materials are sprayed from top to bottom. A discharge pipe 14 is provided at the lower end of the kettle body 1. A steam outlet 15 is provided on the discharge pipe 14. A feeding pipe 16 is provided at the lower end of the discharge pipe 14. A residue outlet 161 is provided at the lower end of the feeding pipe 16. A first reduction gear 18 is provided on the feeding pipe 16. A first motor 17 is provided on the first reduction gear 18. A screw feeder 19 is provided on the first reduction gear 18. The screw feeder 19 is rotationally connected to the feeding pipe 16, and the residue can be sent out from the residue outlet 161 through the screw feeder 19. A liquid descending distributor 2 is provided on the kettle body 1. A heating coil 3 is provided on the outer side of the kettle body 1. The input of the heating coil 3 is saturated steam at 170 - 190°C and 1.0 MPa, continuously heating the liquid in the kettle body 1 to provide the heat source required for material evaporation and rectification separation. A kettle platform 4 is provided on the kettle body 1. A second reduction gear 42 is provided on the kettle platform 4. A second motor 41 is provided on the second reduction gear 42. A rotating shaft 43 is provided on the second reduction gear 42. A stirring mechanism 5 is provided on the rotating shaft 43.

[0020] Please refer to Figures 2-3 , The stirring mechanism 5 includes an upper knife rest 51. The upper knife rest 51 is fixedly connected to the outer side of the rotating shaft 43. A lower knife rest 52 is fixedly connected to the outer side of the rotating shaft 43. The number of both the upper knife rest 51 and the lower knife rest 52 is two. The two upper knife rests 51 and the two lower knife rests 52 are symmetrically distributed on the rotating shaft 43. Through the design of the upper knife rest 51 and the lower knife rest 52, the liquid can be mixed. One end of the upper knife rest 51 far from the rotating shaft 43 is fixedly connected to a wire brush 53. The wire brush 53 is fixedly connected to the lower knife rest 52. The wire brush 53 contacts the inner wall of the kettle body 1. Through the design of the wire brush 53, the upper end of the inner wall of the kettle body 1 can be scraped.

[0021] Please refer to Figures 2-3 , A scraping rake 54 is fixedly connected to the lower end of the lower knife rest 52. The scraping rake 54 contacts the inner wall of the kettle body 1. Through the design of the scraping rake 54, the lower end of the inner wall of the kettle body 1 can be scraped. A conical stirrer 55 is fixedly connected to the lower end of the rotating shaft 43. The conical stirrer 55 is rotationally connected to the discharge pipe 14. The second motor 41 drives the rotating shaft 43 to rotate through the second reduction gear 42, causing the rotating shaft 43 to drive the upper knife rest 51 and the lower knife rest 52 to rotate, and causing the rotating shaft 43 to drive the conical stirrer 55 to rotate. Under the mixing of the upper and lower stirrers, the liquid is continuously heated and evaporated, and the gas phase goes from bottom to top.

[0022] The specific implementation process of the present utility model is as follows: When purifying silicon tetrachloride in fine chemical production, the raw material silicon tetrachloride is evenly sprayed into the kettle body 1 through the annular spray pipe 13. The liquid flows from top to bottom and fully contacts with the gas phase for mass transfer and heat transfer, achieving the effect of preliminary rectification and purification. Then, by starting the second motor 41, the second motor 41 drives the rotating shaft 43 to rotate through the second speed reducer 42, causing the rotating shaft 43 to drive the upper tool rest 51 and the lower tool rest 52 to rotate, and the rotating shaft 43 to drive the conical stirrer 55 to rotate. Under the mixing of the upper and lower stirrers, the liquid is continuously heated and evaporated, and the gas phase flows from bottom to top. The residue after evaporation and rectification separation of the silicon tetrachloride raw material forms solid substances and precipitates at the bottom, and then enters the feeding pipe 16 through the blanking pipe 14. Then, by starting the first motor 17, the first motor 17 drives the screw feeder 19 to rotate through the first speed reducer 18, and the residue can be sent out through the residue outlet 161 by the screw feeder 19, achieving the purpose of continuous production without stopping the kettle and improving the production efficiency of fine chemicals. It meets the production requirements of continuous feeding, stirring, heating, rectification, and slag discharge in fine chemical production.

[0023] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A chemical stirring and heating purification kettle structure, including a kettle body (1), characterized in that: A gas phase outlet (11) is provided on the kettle body (1), a steam inlet (12) is provided on the kettle body (1), a spray pipe (13) is provided on the kettle body (1), a blanking pipe (14) is provided at the lower end of the kettle body (1), a steam outlet (15) is provided on the blanking pipe (14), a feeding pipe (16) is provided at the lower end of the blanking pipe (14), a downcomer distributor (2) is provided on the kettle body (1), a heating coil (3) is provided outside the kettle body (1), a kettle platform (4) is provided on the kettle body (1), a second reduction gear (42) is provided on the kettle platform (4), a second motor (41) is provided on the second reduction gear (42), a rotating shaft (43) is provided on the second reduction gear (42), and a stirring mechanism (5) is provided on the rotating shaft (43).

2. The structure of a chemical stirring, heating and purification kettle according to claim 1, characterized in that: A residue outlet (161) is provided at the lower end of the feeding pipe (16), a first reduction gear (18) is provided on the feeding pipe (16), a first motor (17) is provided on the first reduction gear (18), a screw feeder (19) is provided on the first reduction gear (18), and the screw feeder (19) is rotatably connected to the feeding pipe (16).

3. The structure of a chemical stirring, heating and purification kettle according to claim 1, characterized in that: The stirring mechanism (5) includes an upper knife rest (51), the upper knife rest (51) is fixedly connected to the outside of the rotating shaft (43), a lower knife rest (52) is fixedly connected to the outside of the rotating shaft (43), a wire brush (53) is fixedly connected to the end of the upper knife rest (51) away from the rotating shaft (43), a conical stirrer (55) is fixedly connected to the lower end of the rotating shaft (43), and the conical stirrer (55) is rotatably connected to the blanking pipe (14).

4. The structure of a chemical stirring and heating purification kettle according to claim 3, characterized in that: The number of the upper knife rest (51) and the lower knife rest (52) is two each, and the two upper knife rests (51) and the two lower knife rests (52) are symmetrically distributed on the rotating shaft (43).

5. The structure of a chemical stirring and heating purification kettle according to claim 3, characterized in that: The wire brush (53) is fixedly connected to the lower knife rest (52), and the wire brush (53) contacts the inner wall of the kettle body (1).

6. The structure of a chemical stirring and heating purification kettle according to claim 3, wherein: A scraping rake (54) is fixedly connected to the lower end of the lower knife rest (52), and the scraping rake (54) contacts the inner wall of the kettle body (1).

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