Phenylchlorosilane, and preparation method and device thereof
A technology of phenylchlorosilane and preparation device, which is applied in the field of organic silicon and achieves the effects of simple operation, improved comprehensive economic benefit and reduced separation cost
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Embodiment 1
[0035] The preparation method of phenylchlorosilane is disclosed herein, comprising: using chlorobenzene, dichloride as a raw material, wherein the dichloride silicon feedstock is produced by a by-product dichlorchloride generated during polysilicon production. Hydrogen, reactive under catalyst conditions to form phenylchlorosilane, after separation, to give phenylchlorosilane products. The main reaction is:
[0036] SiH 2 CL 2 + 2C 6 Hide 5 CL-- → C 12 Hide 10 SICL 2 + 2HCL
[0037] SiH 2 CL 2 + C 6 Hide 5 CL-- → C 6 Hide 6 SICL 2 + HCL
[0038] In the present embodiment, the catalyst is copper, nickel, zinc, iron, chromium, aluminum, ruthenium, and a catalyst consisting of copper, nickel, zinc according to 1: 1: 1 ratio. The particle size of the catalyst is preferably from 1 to 3 mm.
[0039] In the present embodiment, the volume ratio of dichloride and chlorobenzene and chlorobenzene is 1: (2.5 ~ 3.5).
[0040] In this embodiment, the reaction temperature is 350 to 550 ° C.
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Embodiment 2
[0048] Such as figure 1 As shown, the present embodiment discloses a preparation apparatus of phenylchlorosilane, including:
[0049] Reactor 10 for reacting dichloride and chlorobenzene reaction to form phenylchlorosilane;
[0050] The separator 20 is coupled to the reactor 10 for separating phenylchlorosilanes formed in the reactor.
[0051] Further, the phenylchlorosilane preparation apparatus of the present embodiment further includes:
[0052]The first vaporizer 30 is used to gasify dichloride silicon, and deliver dichloride silicon gas to reactor 10. Specifically, a first feed line 31 is provided on the first vaporizer for passing by-product dichloride (liquid) of the polysilicon production process into the first vaporizer 30. The first vaporizer 30 is preferably adopted by steam heating, that is, the outer sleeve of the first duty unit 30 has a steam jacket 50 that can pass into the high temperature vapor, and the dichloride liquid in the first vaporizer 30 is heat after he...
Embodiment 3
[0061] This example discloses a method of preparing phenylchlorosilanes using a device in Example 2, and the specific steps are as follows:
[0062] (1) Add copper, nickel, zinc to the fixed bed reactor (i.e., reactor 10) to the fixed bed reactor (i.e., reactor 10), and heat the fixed bed reactor to 400 ~ 450 ° C. ;
[0063] (2) The dichloride liquid generated by the polysilicon production process is introduced into the first vaporizer 30 through the first feed line 31, and the steam is introduced into the jacket 50 to heat the first vaporizer 30 to 100 ~ 140 ° C, gasification of dichloride liquid; simultaneously, the chlorobenzene 40 through the second feed line 41 into the second vaporizer 40, and activates the electric heater 40 to heat the second vaporizer 40 to 220 ~ 250 ° C. To make chlorobenzene air;
[0064] (3) Putting dichloride gas and chlorobenzene gas through the flow meter 60 at a volume ratio of 1: 2.5 (i.e., flow ratio) into a fixed bed reactor of 1.2 to 2.0 MPa, c...
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Abstract
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