Condensation system for continuous preparation of hexamethyldisilazane

Abstract

The utility model discloses a condensation system for continuously preparing hexamethyldisilazane, and relates to the technical field of condensation systems. The device comprises a fixed box. The output ends on the two sides of the bottom of the two-way pipe are connected to the input ends of the first condensing device and the second condensing device respectively, so that when hexamethyldisilazane is prepared continuously, after steam is output continuously, the speed of the steam flowing into the two-way pipe can be increased through the cooperation of the suction device and the steam outlet pipe, and the production efficiency of hexamethyldisilazane is improved. A one-way circulation channel and a two-way circulation channel can be formed in the two-way pipe through cooperation of the rotating ring and the sealing ball, and when steam is continuously output, the orientation angle of the inner through hole is changed by changing the angle of the sealing ball; a two-way pipe is arranged, so that steam can be respectively and simultaneously input into the first condensing device and the second condensing device to be condensed, the steam condensing space is increased while the steam circulation rate is increased, and the preparation and extraction efficiency of hexamethyldisilazane is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of condensation systems, and in particular relates to a condensation system for continuous preparation of hexamethyldisilazane. Background Art

[0002] Hexamethyldisilazane is a colorless liquid with the chemical formula (CH3)3SiNHSi(CH3)3, which is widely used in organic synthesis and organometallic chemical reactions. Hexamethyldisilazane is also used to increase the adhesion of photoresist on the wafer surface. It is an important modified material for the production of silicone rubber, silicone oil and other downstream silicone products. It can significantly improve the hydrophobicity, reinforcement, ductility and other properties of silicone materials.

[0003] In the prior art, the production process of hexamethyldisilazane is a complex process involving multiple links. In the distillation process of hexamethyldisilazane, the raw materials are first added to the distillation tower. Under the action of heating, the raw materials are vaporized to produce steam, and the steam enters the condenser and is cooled to turn the steam back into liquid. The condensed liquid is collected by a collection device. However, in the continuous preparation of hexamethyldisilazane, its steam is continuously generated, and it is difficult to efficiently condense the steam after entering the condenser, resulting in a reduced steam liquefaction effect.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a condensation system for continuous preparation of hexamethyldisilazane to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a condensation system for continuous preparation of hexamethyldisilazane, comprising a fixed box, a horizontal plate is arranged inside the fixed box, a suction device is arranged on the top of the horizontal plate, a steam inlet pipe and a steam outlet pipe are arranged on the outer surface of the suction device, one end of the steam outlet pipe is fixedly connected with a steam guide pipe, a two-way pipe is arranged at the bottom of the steam guide pipe, a closed ball is arranged inside the two-way pipe, a swivel is fixedly connected to one side of the closed ball, an inner through hole is opened inside the closed ball, and a first condensation device and a second condensation device are arranged at the output ends of the two-way pipe.

[0008] Furthermore, the suction device comprises a suction motor, a driving shaft is arranged at an output end of the suction motor, an impeller is arranged on an outer surface of the driving shaft, and a steam box is arranged on an outer surface of the impeller.

[0009] Furthermore, the first condensing device comprises a condensing tank, a spiral tube is arranged inside the condensing tank, and an inlet pipe and an outlet pipe are respectively arranged at two ends of the spiral tube.

[0010] Furthermore, the second condensing device includes a second condensing tank, the inner wall of the second condensing tank is provided with a second spiral tube, the outer surface of the second condensing tank is provided with a guide tube, and the output end of the guide tube is connected to the interior of the condensing tank.

[0011] Furthermore, an output pipe is provided on the outer surface of the condensing tank, a reflux device is provided at the output end of the output pipe, and a collecting tank is provided on one side of the reflux device.

[0012] Furthermore, the reflux device comprises a reflux pump, and flow pipes are arranged on both sides of the reflux pump, and the output end of one group of flow pipes is connected to the collecting tank.

[0013] Furthermore, an input pipe is provided at the input end of the inlet pipe, and the input pipe penetrates to the outside of the fixed box.

[0014] The utility model has the following beneficial effects:

[0015] The utility model connects the output ends on both sides of the bottom of the two-way pipe to the input ends of the first condensing device and the second condensing device respectively. When hexamethyldisilazane is continuously prepared, its steam is continuously output, and the speed of steam flowing into the inside of the two-way pipe can be increased through the cooperation of the suction device and the steam outlet pipe, and a one-way flow channel and a two-way flow channel can be formed inside the two-way pipe through the cooperation of the swivel and the closing ball. When the steam is continuously output, the angle of the closing ball is changed to change the direction angle of the inner through hole, and then the two-way pipe can be equipped to simultaneously input the steam into the inside of the first condensing device and the second condensing device for condensation, thereby increasing the steam flow rate and the steam condensation space, thereby improving the efficiency of hexamethyldisilazane in the preparation and extraction.

[0016] The utility model arranges the condensing tube in a spiral shape inside the condensing tank, so that when cooling water is continuously circulated inside the spiral tube, the steam continues to descend and fully contacts the spiral tube, so that the steam can be quickly cooled and liquefied, thereby increasing the steam liquefaction rate and the liquid collection efficiency; by connecting the circulation tube with the output tube, when the steam is liquefied and stored at the bottom of the tank body of the condensing tank, the liquid inside the condensing tank can be pumped out by starting the reflux pump and output to the collecting tank through the circulation tube on the other side, so as to improve the extraction effect of the steam after cooling and liquefaction.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments 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 creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the steam box of the utility model;

[0021] Figure 3 This is a schematic diagram of the condensation tank structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the two-way pipe of the utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the condensation tank of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Fixed box; 2. Horizontal plate; 3. Suction device; 4. Steam inlet pipe; 5. Steam outlet pipe; 6. Steam guide pipe; 7. Two-way pipe; 8. Closing ball; 9. Rotating ring; 10. Inner through hole; 11. First condensing device; 12. Second condensing device; 301. Suction motor; 302. Drive shaft; 303. Impeller; 304. Steam box; 1101. Condensate tank; 1102. Spiral tube; 1103. Inlet pipe; 1104. Outlet pipe; 1201. Second condensate tank; 1202. Second spiral tube; 1203. Guide pipe; 1105. Output pipe; 13. Reflux device; 14. Collecting tank; 1301. Reflux pump; 1302. Circulation pipe; 15. Input pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, 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.

[0027] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] See also Figure 1-Figure 5 As shown, the utility model is a condensation system for continuous preparation of hexamethyldisilazane, comprising a fixed box 1, wherein a horizontal plate 2 is arranged inside the fixed box 1, a suction device 3 is arranged on the top of the horizontal plate 2, a steam inlet pipe 4 and a steam outlet pipe 5 are arranged on the outer surface of the suction device 3, one end of the steam outlet pipe 5 is fixedly connected with a steam guide pipe 6, a two-way pipe 7 is arranged at the bottom of the steam guide pipe 6, a closing ball 8 is arranged inside the two-way pipe 7, a swivel 9 is fixedly connected to one side of the closing ball 8, an inner through hole 10 is opened inside the closing ball 8, and a first condensation device 11 and a second condensation device 12 are arranged at the output ends of the two-way pipe 7.

[0029] When it is necessary to condense the steam generated during the preparation of hexamethyldisilazane, one end of the steam inlet pipe 4 is connected to the distillation equipment, and the suction device 3 is started to operate internally to generate a suction force so that the steam in the distillation equipment is sucked into the suction device 3 in conjunction with the steam inlet pipe 4. After being sucked and pressurized by the suction device, the steam enters the steam outlet pipe 5. When the steam is continuously output, the swivel 9 is rotated to drive the closing ball 8 to rotate inside the two-way pipe 7, so that one side of the inner through hole 10 is rotated to a direction connected with the inside of the two-way pipe 7. At this time, the flow channels on both sides of the two-way pipe 7 are opened, and the steam enters and is diverted inside the two-way pipe 7 and is respectively introduced into the first condensation device 11 and the second condensation device 12 for subsequent condensation.

[0030] The utility model connects the output ends on both sides of the bottom of the two-way pipe 7 to the input ends of the first condensing device 11 and the second condensing device 12 respectively. When hexamethyldisilazane is continuously prepared, its steam is continuously output, and the speed of steam flowing into the two-way pipe 7 can be increased through the cooperation of the suction device 3 and the steam outlet pipe 5, and a one-way flow channel and a two-way flow channel can be formed in the two-way pipe 7 through the cooperation of the swivel 9 and the closing ball 8. When the steam is continuously output, the angle of the closing ball 8 is changed to change the direction angle of the inner through hole 10, and then the two-way pipe 7 can be equipped with the steam to simultaneously input the steam into the first condensing device 11 and the second condensing device 12 for condensation, thereby increasing the steam circulation rate and increasing the steam condensation space, thereby improving the efficiency of hexamethyldisilazane in the preparation and extraction.

[0031] In one embodiment, for the above-mentioned suction device 3, the suction device 3 includes a suction motor 301, a driving shaft 302 is provided at the output end of the suction motor 301, an impeller 303 is provided on the outer surface of the driving shaft 302, and a steam box 304 is provided on the outer surface of the impeller 303.

[0032] By enclosing the impeller 303 inside the steam box 304, when the suction motor 301 is started, it drives the drive shaft 302 to rotate to drive the impeller 303 to rotate, so that the impeller 303 forms a suction force inside the steam box 304 to suck the steam into the steam box 304, and then cooperates with the steam inlet pipe 4 and the steam outlet pipe 5 to provide output driving force for the steam generated during continuous preparation, thereby improving the steam output efficiency.

[0033] In one embodiment, for the first condensing device 11, the first condensing device 11 comprises a condensing tank 1101, a spiral tube 1102 is arranged inside the condensing tank 1101, and an inlet pipe 1103 and an outlet pipe 1104 are respectively arranged at both ends of the spiral tube 1102.

[0034] The spiral tube 1102 is arranged inside the condensation tank 1101 when it is spiraled, and the inlet pipe 1103 inputs cooling water into the interior of the spiral tube 1102. When the steam enters the interior of the condensation tank 1101 through the two-way pipe 7, the steam collides with the external surface of the spiral tube 1102, so that the steam is quickly cooled down, and when the steam is continuously input and flows downward, it can continuously contact the tube body. When the steam is liquefied into liquid again, it adheres to the outer wall of the spiral tube 1102 and then freely drips to the bottom of the condensation tank 1101.

[0035] By spirally arranging the condenser tube inside the condensation tank 1101, when cooling water is continuously circulated inside the spiral tube 1102, the steam continues to descend and fully contacts the spiral tube 1102, so that the steam can be quickly cooled and liquefied, thereby increasing the steam liquefaction rate and the liquid collection efficiency.

[0036] In one embodiment, for the above-mentioned second condensing device 12, the second condensing device 12 includes a second condensing tank 1201, the inner wall of the second condensing tank 1201 is provided with a second spiral tube 1202, the outer surface of the second condensing tank 1201 is provided with a guide tube 1203, and the output end of the guide tube 1203 is connected to the interior of the condensing tank 1101.

[0037] The guide pipe 1203 is connected between the condensation tank 1101 and the second condensation tank 1201. After the steam is diverted to the inside of the second condensation tank 1201 by the two-way pipe 7, the steam flows downward along the inside of the second condensation tank 1201 and contacts with the second spiral tube 1202 for condensation, then liquefies into liquid and flows along the outer wall of the second spiral tube 1202 to the inside of the second condensation tank 1201. The setting of the guide pipe 1203 allows the cooled liquid to be output to the inside of the condensation tank 1101 through the guide pipe 1203, so as to facilitate the subsequent centralized extraction and collection.

[0038] In one embodiment, for the above-mentioned condensation tank 1101 , an output pipe 1105 is disposed on the outer surface of the condensation tank 1101 , a reflux device 13 is disposed at the output end of the output pipe 1105 , and a collecting tank 14 is disposed on one side of the reflux device 13 .

[0039] By connecting the reflux device 13 with the output pipe 1105, after starting the reflux device 13, a suction force is generated inside the reflux device 13, which cooperates with the output pipe 1105 to extract the liquid inside the condensation tank 1101, and then quickly transports the liquid to the inside of the collecting tank 14 for storage.

[0040] In one embodiment, for the above-mentioned reflux device 13, the reflux device 13 includes a reflux pump 1301, and flow pipes 1302 are arranged on both sides of the reflux pump 1301, and the output end of one group of flow pipes 1302 is connected to the collecting tank 14.

[0041] By connecting the circulation pipe 1302 with the output pipe 1105, when the steam is liquefied and stored at the bottom of the tank body of the condensation tank 1101, the liquid inside the condensation tank 1101 can be extracted by starting the reflux pump 1301 and output to the collecting tank 14 through the circulation pipe 1302 on the other side, so as to improve the extraction effect of the steam after cooling and liquefaction.

[0042] In one embodiment, for the inlet pipe 1103 , an input pipe 15 is provided at the input end of the inlet pipe 1103 , and the input pipe 15 penetrates to the outside of the fixed box 1 .

[0043] Two ports are provided on the outside of the input pipe 15 and are respectively connected to the inlet ports of the condensation tank 1101 and the second condensation tank 1201 , so as to provide circulating cooling water transportation for the spiral tube 1102 and the second spiral tube 1202 therein.

[0044] Through the above technical scheme, 1. by connecting the output ends on both sides of the bottom of the two-way pipe 7 to the input ends of the first condensing device 11 and the second condensing device 12 respectively, when hexamethyldisilazane is continuously prepared, its steam is continuously output, and the speed of steam flowing into the inside of the two-way pipe 7 can be increased through the cooperation of the suction device 3 and the steam outlet pipe 5, and a one-way flow channel and a two-way flow channel can be formed inside the two-way pipe 7 through the cooperation of the rotating ring 9 and the closing ball 8. When the steam is continuously output, by changing the angle of the closing ball 8 to change the direction angle of the inner through hole 10, the two-way pipe 7 can be equipped with the steam to be simultaneously input into the first condensing device 11 and the second condensing device 12 for condensation, thereby increasing the steam flow rate and increasing the steam 1. By spirally arranging the condenser tube inside the condensation tank 1101, when cooling water is continuously circulated inside the spiral tube 1102, the steam continues to descend and fully contacts the spiral tube 1102, so that the steam can be quickly cooled and liquefied, thereby increasing the steam liquefaction rate and the liquid collection efficiency; by connecting the circulation tube 1302 with the output tube 1105, when the steam is liquefied and stored at the bottom of the tank body of the condensation tank 1101, the liquid inside the condensation tank 1101 can be pumped out by starting the reflux pump 1301, and output to the collecting tank 14 through the circulation tube 1302 on the other side, so as to improve the extraction effect of the steam after cooling and liquefaction.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A condensation system for continuous preparation of hexamethyldisilazane, comprising a fixed box (1), characterized in that: A horizontal plate (2) is arranged inside the fixed box (1), a suction device (3) is arranged on the top of the horizontal plate (2), a steam inlet pipe (4) and a steam outlet pipe (5) are arranged on the outer surface of the suction device (3), one end of the steam outlet pipe (5) is fixedly connected to a steam guide pipe (6), a two-way pipe (7) is arranged at the bottom of the steam guide pipe (6), a closing ball (8) is arranged inside the two-way pipe (7), a swivel (9) is fixedly connected to one side of the closing ball (8), an inner through hole (10) is opened inside the closing ball (8), and a first condensing device (11) and a second condensing device (12) are arranged at the output ends of the two-way pipe (7).

2. A condensation system for continuous preparation of hexamethyldisilazane according to claim 1, characterized in that: The suction device (3) comprises a suction motor (301), the output end of the suction motor (301) is provided with a drive shaft (302), the outer surface of the drive shaft (302) is provided with an impeller (303), and the outer surface of the impeller (303) is provided with a steam box (304).

3. A condensation system for continuous preparation of hexamethyldisilazane according to claim 1, characterized in that: The first condensing device (11) comprises a condensing tank (1101), a spiral tube (1102) is arranged inside the condensing tank (1101), and an inlet tube (1103) and an outlet tube (1104) are respectively arranged at two ends of the spiral tube (1102).

4. A condensation system for continuous preparation of hexamethyldisilazane according to claim 3, characterized in that: The second condensing device (12) comprises a second condensing tank (1201), the inner wall of the second condensing tank (1201) being provided with a second spiral tube (1202), the outer surface of the second condensing tank (1201) being provided with a flow guide tube (1203), and the output end of the flow guide tube (1203) being connected to the interior of the condensing tank (1101).

5. A condensation system for continuous preparation of hexamethyldisilazane according to claim 4, characterized in that: An output pipe (1105) is provided on the outer surface of the condensation tank (1101), a reflux device (13) is provided at the output end of the output pipe (1105), and a collecting tank (14) is provided on one side of the reflux device (13).

6. A condensation system for continuous preparation of hexamethyldisilazane according to claim 5, characterized in that: The reflux device (13) comprises a reflux pump (1301), and flow pipes (1302) are provided on both sides of the reflux pump (1301), and the output end of one group of flow pipes (1302) is connected to the collecting tank (14).

7. A condensation system for continuous preparation of hexamethyldisilazane according to claim 3, characterized in that: An input pipe (15) is provided at the input end of the inlet pipe (1103), and the input pipe (15) penetrates to the outside of the fixed box (1).

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