CN214880243U - Synthetic furnace for preparing trichlorosilane - Google Patents
Synthetic furnace for preparing trichlorosilane Download PDFInfo
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- CN214880243U CN214880243U CN202120203751.9U CN202120203751U CN214880243U CN 214880243 U CN214880243 U CN 214880243U CN 202120203751 U CN202120203751 U CN 202120203751U CN 214880243 U CN214880243 U CN 214880243U
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Abstract
The utility model belongs to the technical field of chemical industry, in particular to a synthetic furnace for preparing trichlorosilane, which comprises a furnace body, a bulk cargo device, a filtering mechanism and a screw conveyer, wherein the top of the furnace body is provided with a charging hole and an air outlet, the bottom of the furnace body is provided with a deslagging hole and an air inlet, the air inlet is connected with a gas pipeline, a thermometer and a porous air distribution plate are arranged in the furnace body, the bulk cargo device comprises a rotating shaft and a speed reducing motor, the rotating shaft is in transmission connection with the speed reducing motor, a plurality of bulk cargo plates are arranged around the rotating shaft, the filtering mechanism comprises a filtering box and a filter, the top of the filtering box is provided with a charging hole, the bottom of the filtering box is provided with a discharge hole, a filtering screen is arranged in the filtering box, the bottom of the filtering screen is provided with a rapping motor, the filter is arranged on the gas pipeline, the interior of the filter is provided with a filling material, the feed inlet of the screw conveyer is connected with the discharge hole of the filtering box, the discharge port of the screw conveyer is connected with the feed inlet of the furnace body. The device can improve the yield of trichlorosilane.
Description
Technical Field
The utility model belongs to the technical field of chemical industry, in particular to a synthetic furnace for preparing trichlorosilane.
Background
The direct chlorination method is a main method for producing trichlorosilane, and at present, metallurgical-grade industrial silicon powder and dry hydrogen chloride gas are generally reacted in a synthesis furnace to generate trichlorosilane, byproducts silicon tetrachloride, dichlorosilane and the like, and chlorosilane high polymers, metal chlorides and the like. When the existing synthesis furnace is used, silicon powder put into equipment is easy to accumulate at one position, the contact area of the silicon powder and hydrogen chloride gas is influenced, the reaction is insufficient, and a large amount of byproducts are generated; in addition, the existing synthesis furnace has no filtering device, and can not filter impurities in silicon powder and hydrogen chloride gas, so that the product quality is influenced. Therefore, improvements are needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a synthetic furnace for preparing trichlorosilane, which comprises a furnace body, a bulk material device, a filtering mechanism and a screw conveyer, wherein the top of the furnace body is provided with a feed inlet and an air outlet, the bottom of the furnace body is provided with a slag discharge port and an air inlet, the air inlet is connected with a gas pipeline, a first heating sleeve is arranged outside the gas pipeline, the outer wall of the furnace body is provided with an observation window and a control panel, a second heating sleeve is arranged on the shell of the furnace body, a thermometer and a porous air distribution plate are arranged in the furnace body, the porous air distribution plate is arranged at a position close to the air inlet and corresponds to the air inlet, and the thermometer is electrically connected with the control panel;
the bulk cargo device comprises a rotating shaft and a speed reducing motor arranged outside the furnace body, the rotating shaft is horizontally arranged in the furnace body, the left end of the rotating shaft penetrates through the left side wall of the furnace body and is in transmission connection with an output shaft of the speed reducing motor, the right end of the rotating shaft is rotatably connected to the right side wall of the furnace body through a bearing seat, a plurality of parallel bulk cargo plates are radially arranged around the rotating shaft, and the bulk cargo plates are fixedly connected with the rotating shaft through connecting pieces;
the filter mechanism comprises a filter box and a filter, a feed port is formed in the top of the filter box, a discharge port is formed in the bottom of the filter box, a filter screen is arranged in the filter box, a rapping motor is arranged at the bottom of the filter screen, the filter is arranged on a gas pipeline, and filler is arranged inside the filter;
the feed inlet of screw conveyer links to each other with the bin outlet of rose box, screw conveyer's discharge gate links to each other with the charge door of furnace body.
Preferably, the thermometer adopts an WZP-201 temperature sensor for detecting the temperature in the furnace body.
Preferably, a safety valve is arranged at the top of the furnace body, so that the operation safety of equipment is guaranteed.
Preferably, the filler of the filter adopts ferrous chloride particles, and the ferrous chloride does not react with the hydrogen chloride gas but can react with chlorine gas included in the hydrogen chloride gas to remove impurity chlorine gas.
The utility model also comprises other components which can be normally used by the synthesis furnace for preparing the trichlorosilane and are conventional technical means in the field. In addition, the devices or components which are not limited in the utility model all adopt the conventional technical means in the field, such as a rapping motor, a screw conveyer, a safety valve and a speed reducing motor.
The utility model has the working principle that silicon powder is added into a filter box through a feeding port, a rapping motor is started to filter impurities in the silicon powder, the filtered silicon powder is conveyed to the top of a furnace body through a screw conveyor and then enters the furnace body through the feeding port, a speed reduction motor is started, a rotating shaft drives a dispersing plate to rotate so as to disperse the silicon powder, one part of the silicon powder is prevented from being accumulated, after the feeding is finished, the furnace body is heated through a second heating sleeve, the temperature is adjusted to a set range, hydrogen chloride gas is introduced into a gas pipeline and enters the furnace body through a filter, at the moment, the first heating sleeve can preheat the hydrogen chloride gas, the filter can remove chlorine in the hydrogen chloride gas, and after the temperature is stable, formal reaction is started; in the reaction process, an operator can check the running condition of equipment in the furnace body through the observation window and monitor the temperature in the furnace body in real time through the control panel; and discharging and collecting the tail gas after reaction through a gas outlet.
The utility model has the advantages that the device has reasonable structural design and convenient operation, can effectively avoid silicon powder in the furnace body from accumulating, increases the contact area of the silicon powder and hydrogen chloride gas, enables the reaction to be fully carried out and improves the yield of trichlorosilane; in addition, the filtering mechanism can filter the impurities in the silicon powder and the hydrogen chloride gas, and the product quality is ensured.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. the furnace body, 2, a screw conveyer, 3, a feed inlet, 4, an air outlet, 5, a slag discharge port, 6, an air inlet, 7, a gas pipeline, 8, a first heating sleeve, 9, an observation window, 10, a control panel, 11, a second heating sleeve, 12, a thermometer, 13, a porous air distribution plate, 14, a rotating shaft, 15, a speed reducing motor, 16, a material dispersing plate, 17, a filter box, 18, a filter, 19, a feed inlet, 20, a discharge outlet, 21, a filter screen, 22, a vibrating motor, 23, a filler and 24 are safety valves.
Detailed Description
The present invention will be described more clearly with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the description herein is only for explaining the present invention, but not for limiting the present invention. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by those skilled in the art without creative efforts should be included in the protection scope of the present invention.
Examples
As shown in fig. 1, the utility model provides a synthetic furnace for preparing trichlorosilane, including furnace body 1, bulk cargo device, filtering mechanism and screw conveyer 2, the top of furnace body 1 is provided with charge door 3 and gas outlet 4, and the bottom of furnace body 1 is provided with slag notch 5 and air inlet 6, air inlet 6 is connected with gas pipeline 7, and the outside of gas pipeline 7 is provided with first heating jacket 8, the outer wall of furnace body 1 is provided with observation window 9 and control panel 10, be provided with second heating jacket 11 on the casing of furnace body 1, be provided with thermometer 12 and porous air distribution plate 13 in furnace body 1, porous air distribution plate 13 sets up in the position that is close to air inlet 6, and corresponding with air inlet 6, thermometer 12 is connected with control panel 10 electricity;
the bulk cargo device comprises a rotating shaft 14 and a speed reducing motor 15 arranged outside the furnace body 1, wherein the rotating shaft 14 is horizontally arranged in the furnace body 1, the left end of the rotating shaft 14 penetrates through the left side wall of the furnace body 1 and is in transmission connection with an output shaft of the speed reducing motor 15, the right end of the rotating shaft 14 is rotatably connected to the right side wall of the furnace body 1 through a bearing seat, a plurality of parallel bulk cargo plates 16 are radially arranged around the rotating shaft 14, and the plurality of bulk cargo plates 16 are fixedly connected with the rotating shaft 14 through connecting pieces;
the filtering mechanism comprises a filtering box 17 and a filter 18, wherein a feeding port 19 is formed in the top of the filtering box 17, a discharging port 20 is formed in the bottom of the filtering box 17, a filtering screen 21 is arranged in the filtering box 17, a rapping motor 22 is arranged at the bottom of the filtering screen 21, the filter 18 is arranged on the gas pipeline 7, and a filling material 23 is arranged inside the filter 18;
the feed inlet of screw conveyer 2 links to each other with the bin outlet 20 of rose box 17, the discharge gate of screw conveyer 2 links to each other with the charge door 3 of furnace body 1.
The thermometer 12 employs an WZP-201 temperature sensor for detecting the temperature inside the furnace body 1. And a safety valve 24 is arranged at the top of the furnace body 1, so that the operation safety of equipment is guaranteed. The filler 23 of the filter 18 is ferrous chloride particles, which do not react with the hydrogen chloride gas but can react with the chlorine gas included in the hydrogen chloride gas to remove the impurity chlorine gas.
The working principle of the utility model is that, add silicon powder into the filter box 17 through dog-house 19, start and shake the motor 22 and make the filter screen 21 filter the impurity in the silicon powder, the silicon powder after filtering passes through screw conveyer 2 and carries the top of furnace body 1, get into in the furnace body 1 through charge door 3 again, start gear motor 15, pivot 14 drives material dispersing plate 16 and rotates, in order to carry out bulk cargo processing to the silicon powder, avoid silicon powder to pile up a department, after finishing throwing the material, heat furnace body 1 through second heating jacket 11, and transfer the temperature to the settlement within range, let in the hydrogen chloride gas in gas pipeline 7 again, get into furnace body 1 through filter 18, first heating jacket 8 can preheat the hydrogen chloride gas at this moment, filter 18 can get rid of the chlorine in the hydrogen chloride gas, after the temperature is stable, begin formal reaction; in the reaction process, an operator can check the operation condition of equipment in the furnace body 1 through the observation window 9 and monitor the temperature in the furnace body 1 in real time through the control panel 10; the tail gas after reaction is discharged and collected through a gas outlet 4.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.
Claims (4)
1. A synthetic furnace for preparing trichlorosilane comprises a furnace body, a bulk material device, a filtering mechanism and a screw conveyor, and is characterized in that: the furnace comprises a furnace body and is characterized in that a feeding port and an air outlet are formed in the top of the furnace body, a slag discharging port and an air inlet are formed in the bottom of the furnace body, the air inlet is connected with a gas pipeline, a first heating sleeve is arranged outside the gas pipeline, an observation window and a control panel are arranged on the outer wall of the furnace body, a second heating sleeve is arranged on a shell of the furnace body, a thermometer and a porous air distribution plate are arranged in the furnace body, the porous air distribution plate is arranged at a position close to the air inlet and corresponds to the air inlet, and the thermometer is electrically connected with the control panel;
the bulk cargo device comprises a rotating shaft and a speed reducing motor arranged outside the furnace body, the rotating shaft is horizontally arranged in the furnace body, the left end of the rotating shaft penetrates through the left side wall of the furnace body and is in transmission connection with an output shaft of the speed reducing motor, the right end of the rotating shaft is rotatably connected to the right side wall of the furnace body through a bearing seat, a plurality of parallel bulk cargo plates are radially arranged around the rotating shaft, and the bulk cargo plates are fixedly connected with the rotating shaft through connecting pieces;
the filter mechanism comprises a filter box and a filter, a feed port is formed in the top of the filter box, a discharge port is formed in the bottom of the filter box, a filter screen is arranged in the filter box, a rapping motor is arranged at the bottom of the filter screen, the filter is arranged on a gas pipeline, and filler is arranged inside the filter;
the feed inlet of screw conveyer links to each other with the bin outlet of rose box, screw conveyer's discharge gate links to each other with the charge door of furnace body.
2. The synthetic furnace for preparing trichlorosilane according to claim 1, which is characterized in that: the thermometer employs an WZP-201 temperature sensor.
3. The synthetic furnace for preparing trichlorosilane according to claim 1, which is characterized in that: and a safety valve is arranged at the top of the furnace body.
4. The synthetic furnace for preparing trichlorosilane according to claim 1, which is characterized in that: the filler of the filter adopts ferrous chloride particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120203751.9U CN214880243U (en) | 2021-01-25 | 2021-01-25 | Synthetic furnace for preparing trichlorosilane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120203751.9U CN214880243U (en) | 2021-01-25 | 2021-01-25 | Synthetic furnace for preparing trichlorosilane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214880243U true CN214880243U (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120203751.9U Active CN214880243U (en) | 2021-01-25 | 2021-01-25 | Synthetic furnace for preparing trichlorosilane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214880243U (en) |
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2021
- 2021-01-25 CN CN202120203751.9U patent/CN214880243U/en active Active
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Effective date of registration: 20230710 Granted publication date: 20211126 |