Preparation device of phenyl trichlorosilane crude product

Abstract

The utility model discloses a device for preparing a crude product of phenyl trichlorosilane, which comprises a trichlorosilane tank for storing trichlorosilane; the chlorobenzene tank is used for storing chlorobenzene; the trichlorosilane vaporization kettle is connected with the trichlorosilane tank, and the trichlorosilane vaporization kettle is used for vaporizing trichlorosilane; the chlorobenzene vaporization kettle is connected with the chlorobenzene tank and is used for vaporizing chlorobenzene; the reactor is respectively connected with the trichlorosilane vaporization kettle and the chlorobenzene vaporization kettle, the reactor is provided with a first inlet, the first inlet is used for introducing an inducer chloroform, and trichlorosilane and chlorobenzene react in the reactor under the induction of the chloroform to generate a crude product of phenyltrichlorosilane. According to the preparation device of the phenyl trichlorosilane crude product, the phenyl trichlorosilane reaction end can continuously operate for a long period, the shutdown maintenance frequency is low, and the production and maintenance cost is reduced. An inducer chloroform directly enters the reactor, so that the thermal shrinkage and the violent reaction are enhanced, and the generation of benzidine materials is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of chlorosilane preparation, and specifically relates to a preparation device for crude phenyltrichlorosilane. Background Art

[0002] In recent years, with the changes in the process technology of silane coupling agents, the production process of preparing phenyltrichlorosilane with trichlorosilane and chlorobenzene as raw materials has become the main process used in the synthesis of this product in the silicone industry due to its advantages such as low investment and quick results. At the same time, as phenylchlorosilane is a silane coupling agent with high added value, its production process optimization has become the development and research object of various manufacturers in the atmosphere dominated by interests.

[0003] The raw materials for the production of phenyltrichlorosilane are chlorobenzene and trichlorosilane. The boiling point of chlorobenzene is 132°C, the boiling point of trichlorosilane is 31.8°C, and the boiling point of chloroform is 61.2°C.

[0004] Common chlorobenzene vaporization and trichlorosilane vaporization equipment basically use the method of converting chlorobenzene and trichlorosilane through the tube side of the heat exchanger to convert the liquid phase into the gas phase, and then enter the reactor. During the operation of the chlorobenzene heat exchanger and the trichlorosilane heat exchanger, the tube side is blocked, resulting in a reduction in the flow area and a poor heat exchange effect, which cannot meet the reactor feed volume.

[0005] The temperature of gaseous chlorobenzene and trichlorosilane after heat exchange in the chlorobenzene heat exchanger and the trichlorosilane heat exchanger is relatively low, and a large amount of heat is required to reach the reaction temperature after directly entering the reactor.

[0006] After heat exchange in the chlorobenzene heat exchanger and the trichlorosilane heat exchanger, the gaseous chlorobenzene and trichlorosilane are directly mixed and enter the reactor, and the two materials are mixed unevenly.

[0007] The inducing agent chloroform is passed into the trichlorosilane heat exchanger or chlorobenzene heat exchanger.

[0008] It starts to decompose at 80℃, causing it to lose its original function. Utility Model Content

[0009] The technical problem to be solved by the utility model is that in the prior art, in a device for producing phenyltrichlorosilane by reacting trichlorosilane and chlorobenzene, in the process of converting the raw materials chlorobenzene and trichlorosilane from the liquid phase to the gas phase respectively, after the heat exchangers for vaporization respectively operate for a period of time, the heat exchanger tubes are blocked, resulting in shutdown for maintenance, so that the phenyltrichlorosilane reaction end cannot operate for a long period of time. A device for preparing crude phenyltrichlorosilane is provided, and in the process of converting the liquid phase of chlorobenzene and trichlorosilane into the gas phase, the device is not blocked.

[0010] The technical solution adopted to solve the technical problem of the utility model is to provide a preparation device for crude phenyltrichlorosilane, comprising:

[0011] Trichlorosilane tank, used to store trichlorosilane;

[0012] Chlorobenzene tank, used to store chlorobenzene;

[0013] A trichlorosilane vaporization kettle, connected to the trichlorosilane tank, and used for vaporizing trichlorosilane;

[0014] A chlorobenzene vaporizer, connected to the chlorobenzene tank, is used to vaporize chlorobenzene;

[0015] The reactor is connected to the trichlorosilane vaporizer and the chlorobenzene vaporizer respectively. The reactor is provided with a first inlet for introducing the inducer chloroform. In the reactor, trichlorosilane and chlorobenzene react under the induction of chloroform to generate crude phenyltrichlorosilane.

[0016] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0017] The pipeline mixer has an inlet connected to the trichlorosilane vaporizer and the chlorobenzene vaporizer respectively, and an outlet connected to the reactor.

[0018] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0019] The heat exchanger has a shell side inlet connected to a trichlorosilane vaporizer and a chlorobenzene vaporizer respectively, a shell side outlet connected to a reactor, a tube side inlet connected to an outlet of the reactor, and a tube side outlet of the heat exchanger used for discharging crude phenyltrichlorosilane.

[0020] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0021] The trichlorosilane stirrer is connected to the trichlorosilane vaporization kettle and is used to stir the trichlorosilane in the trichlorosilane vaporization kettle.

[0022] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0023] The chlorobenzene stirrer is connected to the chlorobenzene vaporizer, and is used for stirring the chlorobenzene in the chlorobenzene vaporizer.

[0024] Preferably, the device for preparing crude phenyltrichlorosilane further comprises: a first pump, a second pump, a third pump, and a fourth pump.

[0025] The first pump is arranged between the trichlorosilane tank and the trichlorosilane vaporizer, the inlet of the first pump is connected to the trichlorosilane tank, and the outlet of the first pump is connected to the trichlorosilane vaporizer;

[0026] The second pump is arranged between the chlorobenzene tank and the chlorobenzene vaporizer, the inlet of the second pump is connected to the chlorobenzene tank, and the outlet of the second pump is connected to the chlorobenzene vaporizer;

[0027] The inlet of the third pump is connected to the outlet of the trichlorosilane vaporization kettle, and the trichlorosilane is discharged through the third pump;

[0028] The inlet of the fourth pump is connected to the outlet of the chlorobenzene vaporizer, and the chlorobenzene is discharged through the fourth pump.

[0029] Preferably, the first pump, the second pump, the third pump and the fourth pump are all shielded pumps.

[0030] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0031] The chloroform tank is connected to the first inlet of the reactor. The chloroform tank is used to store chloroform, and the chloroform is introduced into the reactor through the chloroform tank.

[0032] Preferably, the device for preparing crude phenyltrichlorosilane further comprises: a fifth pump, which is arranged between the chloroform tank and the reactor, wherein the inlet of the fifth pump is connected to the chloroform tank, and the outlet of the fifth pump is connected to the first inlet of the reactor.

[0033] Preferably, the fifth pump is a canned pump.

[0034] The utility model provides a device for producing phenyltrichlorosilane by reacting trichlorosilane and chlorobenzene, in which liquid chlorobenzene and trichlorosilane are respectively introduced into a stirred kettle to realize a complete process of converting the liquid phase into the gas phase, and has the following effects:

[0035] The complete set of processes designed by the utility model solves the problem that in the process of chlorobenzene and trichlorosilane using heat exchangers to convert their liquid phase into gas phase, the chlorobenzene heat exchanger and the trichlorosilane heat exchanger tubes are blocked, resulting in a reduction in the flow area of ​​the heat exchanger and a deterioration in the heat exchange effect, causing the phenyltrichlorosilane reaction end to be unable to operate continuously for a long period of time, and the production and maintenance costs are increased. In the preparation device of phenyltrichlorosilane crude product in the utility model, the phenyltrichlorosilane reaction end can operate continuously for a long period of time, the frequency of shutdown for maintenance is low, and the production and maintenance costs are reduced.

[0036] Gaseous chlorobenzene and gaseous trichlorosilane are passed through a pipeline mixer so that the two materials are mixed in the pipeline mixer, thus creating conditions for efficient reaction for heat shrinkage and reaction.

[0037] Gas-phase chlorobenzene and gas-phase trichlorosilane enter the heat exchanger after passing through the pipeline mixer. The gas-phase material at the reactor outlet flowing in the heat exchanger tube preheats the shell-side raw materials, which can increase the reactor feed temperature, reactor heating time and efficiency.

[0038] The inducing agent chloroform directly enters the reactor, which enhances the violent reaction of heat shrinkage and reduces the production of benzidine materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the preparation device of crude phenyltrichlorosilane in Example 2 of the utility model.

[0040] In the figure: 1-chlorobenzene vaporizer, 2-trichlorosilane vaporizer, 3-chlorobenzene tank, 4-trichlorosilane tank, 5-pipeline mixer, 6-heat exchanger, 7-reactor, 8-chloroform tank, 9-toluene filter and distillation system, 10-fourth pump, 11-chlorobenzene stirrer, 12-heat oil inlet pipeline, 13-heat oil outlet pipeline, 14-chlorobenzene feed pipeline, 15-first nitrogen pipeline, 16-chlorobenzene drainage pipeline, 17-second pump, 18-first pump, 19-steam inlet pipeline ; 20-steam outlet pipeline, 21-trichlorosilane agitator, 22-trichlorosilane feed pipeline, 23-second nitrogen pipeline, 24-trichlorosilane gas phase pipeline, 25-chlorobenzene gas phase pipeline, 26-trichlorosilane drainage pipeline, 27-third pump, 28-heat exchanger shell side inlet pipeline, 29-heat exchanger shell side outlet pipeline, 30-reactor outlet pipeline, 31-reactor inlet pipeline, 32-fifth pump, 33-heat exchanger tube side inlet pipeline, 34-heat exchanger tube side outlet pipeline. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0044] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0045] Example 1

[0046] This embodiment provides a device for preparing crude phenyltrichlorosilane, comprising:

[0047] Trichlorosilane tank, used to store trichlorosilane;

[0048] Chlorobenzene tank, used to store chlorobenzene;

[0049] A trichlorosilane vaporization kettle, connected to the trichlorosilane tank, and used for vaporizing trichlorosilane;

[0050] A chlorobenzene vaporizer, connected to the chlorobenzene tank, is used to vaporize chlorobenzene;

[0051] The reactor is connected to the trichlorosilane vaporizer and the chlorobenzene vaporizer respectively. The reactor is provided with a first inlet for introducing the inducer chloroform. In the reactor, trichlorosilane and chlorobenzene react under the induction of chloroform to generate crude phenyltrichlorosilane.

[0052] This embodiment provides a device for producing phenyltrichlorosilane by reacting trichlorosilane and chlorobenzene, in which liquid chlorobenzene and trichlorosilane are respectively introduced into a vaporizer to realize a complete process of converting the liquid phase into the gas phase, and has the following effects:

[0053] The complete set of processes designed in this embodiment solves the problem that in the process of chlorobenzene and trichlorosilane using heat exchangers to transform their liquid phase into gas phase, the chlorobenzene heat exchanger and the trichlorosilane heat exchanger tube are blocked, resulting in a reduction in the flow area of ​​the heat exchanger and a deterioration in the heat exchange effect, causing the phenyltrichlorosilane reaction end to be unable to operate continuously for a long period of time, and the production and maintenance costs are increased. The preparation device of the crude phenyltrichlorosilane in this embodiment does not have the blockage of the device. In the preparation device of the crude phenyltrichlorosilane in the utility model, the phenyltrichlorosilane reaction end can operate continuously for a long period of time, the frequency of shutdown for maintenance is low, and the production and maintenance costs are reduced.

[0054] Example 2

[0055] This embodiment provides a device for preparing crude phenyltrichlorosilane, comprising:

[0056] Trichlorosilane tank 4, used for storing trichlorosilane;

[0057] Chlorobenzene tank 3, used for storing chlorobenzene;

[0058] A trichlorosilane vaporization kettle 2, connected to a trichlorosilane tank 4, and the trichlorosilane vaporization kettle 2 is used to vaporize trichlorosilane;

[0059] A chlorobenzene vaporizer 1 is connected to a chlorobenzene tank 3, and the chlorobenzene vaporizer 1 is used to vaporize chlorobenzene;

[0060] The reactor 7 is connected to the trichlorosilane vaporizer 2 and the chlorobenzene vaporizer 1, respectively. The reactor 7 is provided with a first inlet for introducing the inducer chloroform. In the reactor 7, trichlorosilane and chlorobenzene react under the induction of chloroform to generate crude phenyltrichlorosilane.

[0061] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0062] A pipeline mixer 5 , the inlet of which is connected to the trichlorosilane vaporizer 2 and the chlorobenzene vaporizer 1 respectively, and the outlet of which is connected to the reactor 7 .

[0063] Specifically, in this embodiment, the chlorobenzene in the chlorobenzene tank 3 is introduced into the chlorobenzene vaporizer 1 heated by heat transfer oil to realize the process of converting chlorobenzene from liquid phase to gas phase; the trichlorosilane in the trichlorosilane tank 4 is introduced into the trichlorosilane vaporizer 2 heated by steam to realize the process of converting trichlorosilane from liquid phase to gas phase.

[0064] The pressures of the chlorobenzene vaporizer 1 and the trichlorosilane vaporizer 2 are set at the same value of 0.35-0.38 MPa, so that the two gaseous materials are mixed in the pipeline mixer 5.

[0065] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0066] The heat exchanger 6 has a shell side inlet connected to the trichlorosilane vaporizer 2 and the chlorobenzene vaporizer 1, respectively; the shell side outlet of the heat exchanger 6 is connected to the reactor 7; the tube side inlet of the heat exchanger 6 is connected to the outlet of the reactor 7; and the tube side outlet of the heat exchanger 6 is used to discharge the crude phenyltrichlorosilane.

[0067] The chlorobenzene and trichlorosilane mixed in the pipeline mixer 5 enter the shell side of the heat exchanger 6, and the materials after the reaction in the reactor 7 enter the tube side of the heat exchanger 6 to heat the shell side materials, so that the outlet temperature of the shell side materials of the heat exchanger 6 reaches 200-240°C, thereby realizing the effective utilization of the heat source.

[0068] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0069] The trichlorosilane stirrer 21 is connected to the trichlorosilane vaporization kettle 2 , and the trichlorosilane stirrer 21 is used to stir the trichlorosilane in the trichlorosilane vaporization kettle 2 .

[0070] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0071] The chlorobenzene stirrer 11 is connected to the chlorobenzene vaporizer 1 , and is used for stirring the chlorobenzene in the chlorobenzene vaporizer 1 .

[0072] Preferably, the device for preparing crude phenyltrichlorosilane further comprises: a first pump 18, a second pump 17, a third pump 27, and a fourth pump 10.

[0073] The first pump 18 is disposed between the trichlorosilane tank 4 and the trichlorosilane vaporizer 2, the inlet of the first pump 18 is connected to the trichlorosilane tank 4, and the outlet of the first pump 18 is connected to the trichlorosilane vaporizer 2;

[0074] The second pump 17 is disposed between the chlorobenzene tank 3 and the chlorobenzene vaporizer 1, the inlet of the second pump 17 is connected to the chlorobenzene tank 3, and the outlet of the second pump 17 is connected to the chlorobenzene vaporizer 1;

[0075] The inlet of the third pump 27 is connected to the outlet of the trichlorosilane vaporization kettle 2, and the trichlorosilane is discharged through the third pump 27;

[0076] The inlet of the fourth pump 10 is connected to the outlet of the chlorobenzene vaporizer 1 , and chlorobenzene is discharged through the fourth pump 10 .

[0077] The fourth pump 10 is connected to the chlorobenzene vaporizer 1 through the chlorobenzene discharge pipeline 16 , and the third pump 27 is connected to the trichlorosilane vaporizer 2 through the trichlorosilane discharge pipeline 26 .

[0078] Preferably, the first pump 18 , the second pump 17 , the third pump 27 , and the fourth pump 10 are all shielded pumps.

[0079] Preferably, the device for preparing crude phenyltrichlorosilane further comprises:

[0080] The chloroform tank 8 is connected to the first inlet of the reactor 7 . The chloroform tank 8 is used to store chloroform. Chloroform is introduced into the reactor 7 through the chloroform tank 8 .

[0081] Preferably, the device for preparing crude phenyltrichlorosilane further includes: a fifth pump 32, which is arranged between the chloroform tank 8 and the reactor 7, the inlet of the fifth pump 32 is connected to the chloroform tank 8, and the outlet of the fifth pump 32 is connected to the first inlet of the reactor 7.

[0082] Preferably, the fifth pump 32 is a canned pump.

[0083] The inducer chloroform is introduced into the shell outlet pipeline 29 of the heat exchanger through the fifth pump 32, and enters the reactor 7 to induce efficient reaction between trichlorosilane and chlorobenzene under the reaction temperature conditions.

[0084] Specifically, in this embodiment, the first pump 18 is connected to the trichlorosilane vaporizer 2 through the trichlorosilane feed pipeline 22, and the second pump 17 is connected to the chlorobenzene vaporizer 1 through the chlorobenzene feed pipeline 14. The trichlorosilane vaporizer 2 is connected to the pipeline mixer 5 through the trichlorosilane gas phase pipeline 24, and the chlorobenzene vaporizer 1 is connected to the pipeline mixer 5 through the chlorobenzene gas phase pipeline 25. The outlet of the fifth pump 32 is connected to the first inlet of the reactor 7 through the reactor inlet pipeline 31.

[0085] Specifically, the raw material chlorobenzene enters the chlorobenzene vaporizer 1 from the chlorobenzene tank 3 through the second pump 17. In this embodiment, the chlorobenzene vaporizer 1 is set as a pressure vessel with a volume of 3-5m3. The size is selected according to the production scale of the device. The chlorobenzene vaporizer 1 is stirred by a chlorobenzene stirrer 11 (variable frequency motor). The chlorobenzene vaporizer 1 is heated by a first external jacket. The heat source medium in the first external jacket is selected as heat transfer oil. The first heating jacket is respectively connected to the heat transfer oil inlet pipeline 12 and the heat transfer oil outlet pipeline 13. The temperature requirement is 240-260°C. The chlorobenzene vaporizer 1 is set to a pressure of 0. .35-0.38MPa, a first nitrogen pipeline 15 is provided on the chlorobenzene vaporizer 1, and inert gas nitrogen is introduced through the first nitrogen pipeline 15 for replacement, and liquid chlorobenzene is distilled under the conditions of heating with heat transfer oil and stirring with the chlorobenzene stirrer 11. After chlorobenzene is vaporized, the temperature is 200-220°C and enters the pipeline mixer 5 through the chlorobenzene gas pipeline 25. The chlorobenzene vaporizer 1 is connected to the fourth pump 10 through the chlorobenzene discharge pipeline 16. When the chlorobenzene vaporizer 1 is shut down for maintenance, the liquid chlorobenzene in the chlorobenzene vaporizer 1 is pumped to the chlorobenzene collection tank for disposal through the chlorobenzene discharge pipeline 16 and the fourth pump 10.

[0086] Specifically, the raw material trichlorosilane enters the trichlorosilane vaporizer 2 from the trichlorosilane tank 4 through the first pump 18. In the embodiment, the trichlorosilane vaporizer 2 is set as a pressure vessel with a volume of 3-5m3. The size is selected according to the production scale of the device. The trichlorosilane vaporizer 2 is stirred by a trichlorosilane stirrer 21 (variable frequency motor). The trichlorosilane vaporizer 2 is heated by a second external jacket. The heat source medium in the second external jacket is steam. The second heating jacket is connected to the steam inlet pipeline 19 and the steam outlet pipeline 20 respectively. The temperature is required to be 200-220°C. The set pressure of the trichlorosilane vaporizer 2 is 0.35-0 .38MPa, a second nitrogen pipeline 23 is provided on the trichlorosilane vaporizer 2, and inert gas nitrogen is introduced through the second nitrogen pipeline 23 for replacement, and liquid trichlorosilane is distilled under the conditions of steam heating and stirring of the trichlorosilane stirrer 21. After the trichlorosilane is vaporized, the temperature is 140-160°C and enters the pipeline mixer 5 through the trichlorosilane gas pipeline 24. The trichlorosilane vaporizer 2 is connected to the third pump 27 through the trichlorosilane drainage pipeline 26. When the trichlorosilane vaporizer 2 is shut down for maintenance, the liquid trichlorosilane in the trichlorosilane vaporizer 2 is pumped to the trichlorosilane collection tank for disposal through the trichlorosilane drainage pipeline 26 and the third pump 27.

[0087] After the gaseous chlorobenzene and trichlorosilane are mixed in the pipeline mixer 5, they enter the heat exchanger shell side inlet pipeline 28, and after heat exchange, they come out of the heat exchanger shell side outlet pipeline 29 and enter the reactor 7. After high-temperature reaction, the phenyltrichlorosilane produced comes out from the reactor outlet pipeline 30 connected to the reactor 7, and then enters the heat exchanger tube side inlet pipeline 33, and the gaseous material entering the heat exchanger shell side inlet pipeline 28 is heated again to achieve effective utilization of the heat of the reaction product.

[0088] The inducer chloroform is introduced from the chloroform tank 8 into the reactor 7 through the fifth pump 32 to induce efficient reaction of chlorobenzene and trichlorosilane at the reaction temperature.

[0089] The product after the reaction in the reactor 7 passes through the outlet pipeline 34 of the heat exchanger tube and enters the carbon powder removal filter and distillation system 9.

[0090] This embodiment provides a device for producing phenyltrichlorosilane by reacting trichlorosilane and chlorobenzene, in which liquid chlorobenzene and trichlorosilane are respectively introduced into a stirred kettle to achieve a complete process of converting the liquid phase into the gas phase, which has the following effects:

[0091] The complete set of processes designed in this embodiment solves the problem that in the process of chlorobenzene and trichlorosilane using heat exchanger 6 to convert their liquid phase into gas phase, the pipes of chlorobenzene heat exchanger 6 and trichlorosilane heat exchanger 6 are blocked, resulting in a reduction in the flow area of ​​heat exchanger 6 and a deterioration in the heat exchange effect, causing the phenyltrichlorosilane reaction end to be unable to operate continuously for a long period of time, and the production and maintenance costs are increased. In the preparation device of phenyltrichlorosilane crude product in the utility model, the phenyltrichlorosilane reaction end can operate continuously for a long period of time, the frequency of shutdown for maintenance is low, and the production and maintenance costs are reduced.

[0092] The gaseous chlorobenzene and the gaseous trichlorosilane pass through the pipeline mixer 5, so that the two materials are mixed in the pipeline mixer 5, creating conditions for efficient reaction for heat shrinkage and reaction.

[0093] After passing through the pipeline mixer 5, the gaseous chlorobenzene and gaseous trichlorosilane enter the heat exchanger 6. The gaseous materials at the reactor outlet flowing in the tube side of the heat exchanger 6 preheat the shell side raw materials, which can increase the feed temperature of the reactor 7 and the heating time and efficiency of the reactor 7. In this embodiment, the heat exchanger 6 does not need to use an independent heat source for heating, but only needs to use the heat of the gaseous materials at the reactor outlet as a heat source for heating. The gaseous materials at the reactor outlet can reach about 510°C, and heat is exchanged through the heat exchanger 6, thereby increasing the temperature of the gaseous materials at the reactor inlet flowing in the shell side of the heat exchanger 6.

[0094] The inducing agent chloroform directly enters the reactor 7, which enhances the violent reaction of heat shrinkage and reduces the generation of benzidine material.

[0095] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A device for preparing crude phenyltrichlorosilane, characterized in that: include: Trichlorosilane tank, used to store trichlorosilane; Chlorobenzene tank, used to store chlorobenzene; A trichlorosilane vaporization kettle, connected to the trichlorosilane tank, and used for vaporizing trichlorosilane; A chlorobenzene vaporizer, connected to the chlorobenzene tank, is used to vaporize chlorobenzene; The reactor is connected to the trichlorosilane vaporizer and the chlorobenzene vaporizer respectively. The reactor is provided with a first inlet for introducing the inducer chloroform. In the reactor, trichlorosilane and chlorobenzene react under the induction of chloroform to generate crude phenyltrichlorosilane.

2. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The pipeline mixer has an inlet connected to the trichlorosilane vaporizer and the chlorobenzene vaporizer respectively, and an outlet connected to the reactor.

3. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The heat exchanger has a shell side inlet connected to a trichlorosilane vaporizer and a chlorobenzene vaporizer respectively, a shell side outlet connected to a reactor, a tube side inlet connected to an outlet of the reactor, and a tube side outlet of the heat exchanger used for discharging crude phenyltrichlorosilane.

4. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The trichlorosilane stirrer is connected to the trichlorosilane vaporization kettle and is used to stir the trichlorosilane in the trichlorosilane vaporization kettle.

5. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The chlorobenzene stirrer is connected to the chlorobenzene vaporizer, and is used for stirring the chlorobenzene in the chlorobenzene vaporizer.

6. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The first pump, the second pump, the third pump, the fourth pump, The first pump is arranged between the trichlorosilane tank and the trichlorosilane vaporizer, the inlet of the first pump is connected to the trichlorosilane tank, and the outlet of the first pump is connected to the trichlorosilane vaporizer; The second pump is arranged between the chlorobenzene tank and the chlorobenzene vaporizer, the inlet of the second pump is connected to the chlorobenzene tank, and the outlet of the second pump is connected to the chlorobenzene vaporizer; The inlet of the third pump is connected to the outlet of the trichlorosilane vaporization kettle, and the trichlorosilane is discharged through the third pump; The inlet of the fourth pump is connected to the outlet of the chlorobenzene vaporizer, and the chlorobenzene is discharged through the fourth pump.

7. The preparation device of crude phenyltrichlorosilane according to claim 6, characterized in that: The first pump, the second pump, the third pump and the fourth pump are all shielded pumps.

8. The preparation device of crude phenyltrichlorosilane according to claim 1, characterized in that, Also includes: The chloroform tank is connected to the first inlet of the reactor. The chloroform tank is used to store chloroform, and the chloroform is introduced into the reactor through the chloroform tank.

9. The preparation device of crude phenyltrichlorosilane according to claim 8, characterized in that, Also includes: The fifth pump is arranged between the chloroform tank and the reactor, the inlet of the fifth pump is connected to the chloroform tank, and the outlet of the fifth pump is connected to the first inlet of the reactor.

10. The device for preparing crude phenyltrichlorosilane according to claim 9, characterized in that: The fifth pump is a shielded pump.

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