CN210115059U - Automatic continuous adding device for catalyst - Google Patents
Automatic continuous adding device for catalyst Download PDFInfo
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- CN210115059U CN210115059U CN201920412450.XU CN201920412450U CN210115059U CN 210115059 U CN210115059 U CN 210115059U CN 201920412450 U CN201920412450 U CN 201920412450U CN 210115059 U CN210115059 U CN 210115059U
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Abstract
The application provides an automatic continuous device that adds of catalyst includes: the tank body, the screw extrusion mechanism, the feeding pipeline and the fluidized bed are sequentially connected; a weighing mechanism is arranged at a discharge port at the bottom of the tank body; the tank body is used for containing and conveying the catalyst; the weighing mechanism is used for weighing the catalyst; the screw extrusion mechanism is used for extruding the catalyst into the feeding pipeline; one end of the feeding pipeline is connected with a chloromethane gas input pipe, and the other end of the feeding pipeline is connected with the fluidized bed; the fluidized bed is used for carrying out methyl chlorosilane reaction. According to the method, the catalyst is weighed in advance, the catalyst is supplemented into the fluidized bed all the time, and 20-50 kg/h of catalyst is continuously introduced into the fluidized bed, so that the fluctuation range of the catalyst content is reduced, and the stability of the methyl chlorosilane reaction is improved.
Description
Technical Field
The utility model relates to an organochlorosilane technical field especially relates to an automatic device that adds in succession of catalyst.
Background
The organochlorosilane is a pillar of the whole organosilicon chemistry, and most organosilicon products are prepared by processing polymethylsiloxane prepared by hydrolyzing methylchlorosilane with a regulator, a cross-linking agent, an end capping agent and the like. The application of the composite material is in various fields of aerospace, aviation, chemical engineering, metallurgy, daily life of people and medical care. The methyl chlorosilane is generated by the reaction of methyl chloride and silicon powder, and the development process of the methyl chlorosilane is related to the development of the whole organic silicon industry, so that the improvement of the synthesis efficiency of the methyl chlorosilane is extremely important.
Methylchlorosilanes are the most important monomers for the preparation of silicone polymers. Wherein the maximum dosage of the dimethyldichlorosilane accounts for about 90 percent of the methylchlorosilane. In the fluidized bed reactor, silicon powder and a copper catalyst are mixed to form an active contact.
In the polymerization production process of batch operation, the catalyst activity is reduced along with the reaction, and then the catalyst needs to be supplemented in a reaction container at intervals, so that the fluctuation range of the catalyst content is large, and the methyl chlorosilane reaction is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic device that adds in succession of catalyst to it is big to solve the catalyst content fluctuation range that intermittent operation leads to, and methyl chlorosilane reacts unstable problem.
To achieve the above object, in a first aspect, the present invention provides a method for manufacturing a semiconductor device
Automatic continuous device that adds of catalyst includes: the tank body, the screw extrusion mechanism, the feeding pipeline and the fluidized bed are sequentially connected; a weighing mechanism is arranged at a discharge port at the bottom of the tank body; the tank body is used for containing and conveying the catalyst;
the weighing mechanism is used for weighing the catalyst;
the screw extrusion mechanism is used for extruding the catalyst into the feeding pipeline;
one end of the feeding pipeline is connected with a chloromethane gas input pipe, and the other end of the feeding pipeline is connected with the fluidized bed;
the fluidized bed is used for carrying out methyl chlorosilane reaction.
Optionally, in the automatic continuous catalyst adding device, the tank body is provided with a catalyst feeding pipe and a nitrogen input pipe, the catalyst feeding pipe is provided with a first valve, and the nitrogen input pipe is provided with a second valve; or/and
the vacuum-pumping device is characterized by also comprising a vacuum-pumping mechanism connected with the tank body.
Optionally, the above-mentioned automatic continuous catalyst adding apparatus includes: the tank body is connected with the screw extrusion mechanism through a connecting pipe, and a third valve is arranged on the connecting pipe; and a fourth valve is arranged on the chloromethane gas input pipe.
Optionally, in the automatic continuous catalyst adding device, the weighing mechanism is a weight sensor.
Optionally, the above automatic continuous catalyst adding apparatus further comprises: a controller connected to the first valve, the second valve, the third valve, and the fourth valve.
Optionally, in the automatic continuous catalyst adding device, the controller is a PLC controller.
Optionally, in the automatic continuous catalyst adding device, the tank body is provided with a silicon powder input pipe.
Optionally, in the automatic continuous catalyst adding device, a fifth valve is arranged on the silicon powder input pipe, and the fifth valve is connected with the controller.
Compared with the prior art, the utility model has the advantages that:
the application provides an automatic and continuous catalyst adding method, which is characterized in that a catalyst is weighed in advance, the catalyst is supplemented into a fluidized bed at any time, and 20-50 kg/h of the catalyst is continuously introduced into the fluidized bed, so that the fluctuation range of the content of the catalyst is reduced, and the stability of a methyl chlorosilane reaction is improved.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a flow diagram of a process for the automatic continuous addition of catalyst;
FIG. 2 is a schematic structural view of an automatic continuous catalyst addition apparatus;
the parts in the drawings are numbered as follows:
the device comprises a tank body 1, a catalyst feeding pipe 11, a nitrogen input pipe 12, a first valve 13, a second valve 14, a vacuumizing mechanism 15, a screw extrusion mechanism 2, a feeding pipeline 3, a fluidized bed 4, a weighing mechanism 5, a chloromethane gas input pipe 6, a connecting pipe 7, a third valve 8, a fourth valve 9 and a silicon powder input pipe 10.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
As shown in fig. 1, the present application provides a method for automatic continuous addition of a catalyst, comprising:
s01, weighing the catalyst;
s02, continuously feeding the weighed catalyst into the fluidized bed 4, and carrying out methyl chlorosilane reaction in the fluidized bed 4.
The application provides an automatic and continuous catalyst adding method, which is characterized in that a catalyst is weighed in advance, the catalyst is supplemented into a fluidized bed at any time, and 20-50 kg/h of the catalyst is continuously introduced into the fluidized bed, so that the fluctuation range of the content of the catalyst is reduced, and the stability of a methyl chlorosilane reaction is improved.
In an embodiment of the present application, the above method for automatically and continuously adding a catalyst further includes:
and introducing silicon powder and chloromethane gas into the fluidized bed, wherein the silicon powder and the chloromethane gas react under the action of a catalyst to generate methyl chlorosilane.
In one embodiment of the present application, the catalyst is primarily copper powder.
In one embodiment of the application, the content of the catalyst is controlled to be 1.3 +/-0.8% in the methyl chlorosilane reaction process. Preferably, the content of the catalyst is controlled to be 1.6-1.7%.
As shown in fig. 2, in one embodiment of the present application, there is provided an apparatus for an automatic continuous catalyst addition method, comprising: the tank body 1, the screw extrusion mechanism 2, the feeding pipeline 3 and the fluidized bed 4 are connected in sequence; a weighing mechanism 5 is arranged at a discharge hole 11 at the bottom of the tank body 1; the tank body 1 is used for containing and conveying catalyst; the weighing mechanism 5 is used for weighing the catalyst; the screw extrusion mechanism 2 is used for extruding the catalyst into the feeding pipeline 3; one end of the feeding pipeline 3 is connected with a chloromethane gas input pipe 6, and the other end of the feeding pipeline 3 is connected with the fluidized bed 4; the fluidized bed 4 is used for carrying out the methylchlorosilane reaction. The catalyst is continuously fed into the fluidized bed 4 at a slow speed by the screw extrusion mechanism 2, thereby improving the stability of the reaction.
A silicon powder input pipe 10 is arranged on the tank body 1, and a fifth valve is arranged on the silicon powder input pipe 10.
In one embodiment of the present application, a catalyst feed pipe 11 and a nitrogen gas input pipe 12 are provided on the tank 1, a first valve 13 is provided on the catalyst feed pipe 11, and a second valve 14 is provided on the nitrogen gas input pipe 12. The first tank 1 was pressurized with nitrogen gas, and the catalyst was flowed into the second tank 2.
In one embodiment of the present application, the automatic continuous catalyst adding device further comprises a vacuum pumping mechanism 15 connected with the tank 1. So set up, be in vacuum state in order to guarantee first jar of body, avoided the oxidation of catalyst, it is that the catalyst preserves well, avoids extravagant.
In one embodiment of the present application, an automatic continuous catalyst addition apparatus comprises: the tank body 1 is connected with the screw extrusion mechanism 2 through a connecting pipe 7, and a third valve 8 is arranged on the connecting pipe 7; and a fourth valve 9 is arranged on the chloromethane gas input pipe 6. The third valve 8 is used to control the amount of catalyst flowing into the connecting pipe 7; the fourth valve 9 is used to control the amount of methyl chloride gas flowing into the fluidized bed.
In one embodiment of the present application, the weighing mechanism 5 is a weight sensor.
In one embodiment of the present application, the automatic continuous catalyst adding apparatus further comprises: and a controller connected to the first valve 13, the second valve 14, the third valve 8, and the fourth valve 9. The controller can adjust the opening and closing sizes of the first valve 13, the second valve 14, the third valve 8 and the fourth valve 9, and further adjust the amount of the introduced quantity. The controller can adopt a PLC editable controller.
The following is a detailed description of the present application with reference to specific experimental data:
a batch mode: the catalyst mainly adopts copper powder, the concentration range of the catalyst in the fluidized bed 4 is between 1.5 and 2 percent, and the hourly yield of the obtained methyl chlorosilane is 150 to 210 g/kg.
The continuous mode comprises the following steps: the catalyst mainly adopts copper powder, the concentration range of the catalyst in the fluidized bed 4 is 1.6-1.7%, and the hourly yield of the obtained methyl chlorosilane is 190-200 g/kg.
Therefore, the continuous mode and the intermittent mode are compared, the catalyst is obtained by adopting an automatic continuous adding mode, the fluctuation range of the content of the catalyst is reduced, and the stability of the methyl chlorosilane reaction is improved.
The above-mentioned embodiments of the present invention, which further illustrate the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An automatic continuous catalyst adding device is characterized by comprising: the tank body, the screw extrusion mechanism, the feeding pipeline and the fluidized bed are sequentially connected; a weighing mechanism is arranged at a discharge port at the bottom of the tank body; the tank body is used for containing and conveying the catalyst;
the weighing mechanism is used for weighing the catalyst;
the screw extrusion mechanism is used for extruding the catalyst into the feeding pipeline;
one end of the feeding pipeline is connected with a chloromethane gas input pipe, and the other end of the feeding pipeline is connected with the fluidized bed;
the fluidized bed is used for carrying out methyl chlorosilane reaction.
2. The automatic continuous catalyst adding device according to claim 1, wherein a catalyst feeding pipe and a nitrogen input pipe are arranged on the tank body, a first valve is arranged on the catalyst feeding pipe, and a second valve is arranged on the nitrogen input pipe; or/and
the vacuum-pumping device is characterized by also comprising a vacuum-pumping mechanism connected with the tank body.
3. The automatic continuous catalyst addition device according to claim 2, comprising: the tank body is connected with the screw extrusion mechanism through a connecting pipe, and a third valve is arranged on the connecting pipe; and a fourth valve is arranged on the chloromethane gas input pipe.
4. The automatic continuous catalyst addition device of claim 1, wherein the weighing mechanism is a weight sensor.
5. The automatic continuous catalyst addition device according to claim 3, further comprising: a controller connected to the first valve, the second valve, the third valve, and the fourth valve.
6. The automatic continuous catalyst addition device of claim 5, wherein the controller is a PLC controller.
7. The automatic continuous catalyst adding device according to claim 5, wherein the tank body is provided with a silicon powder input pipe.
8. The automatic continuous catalyst adding device according to claim 7, wherein a fifth valve is arranged on the silicon powder input pipe, and the fifth valve is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920412450.XU CN210115059U (en) | 2019-03-28 | 2019-03-28 | Automatic continuous adding device for catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920412450.XU CN210115059U (en) | 2019-03-28 | 2019-03-28 | Automatic continuous adding device for catalyst |
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| CN210115059U true CN210115059U (en) | 2020-02-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821482A (en) * | 2019-03-28 | 2019-05-31 | 合盛硅业股份有限公司 | The automatic continuous adding method of catalyst and device |
| CN115178189A (en) * | 2022-07-12 | 2022-10-14 | 合盛硅业股份有限公司 | Organic silicon monomer production system and method |
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2019
- 2019-03-28 CN CN201920412450.XU patent/CN210115059U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821482A (en) * | 2019-03-28 | 2019-05-31 | 合盛硅业股份有限公司 | The automatic continuous adding method of catalyst and device |
| CN115178189A (en) * | 2022-07-12 | 2022-10-14 | 合盛硅业股份有限公司 | Organic silicon monomer production system and method |
| CN115178189B (en) * | 2022-07-12 | 2023-08-25 | 合盛硅业(嘉兴)有限公司 | Organosilicon monomer production system and method |
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