Organic silicon monomer synthesis fluidized bed reactor

Abstract

The present invention discloses an organic silicon monomer synthesis fluidized bed reactor, which comprises an upper portion sealing head (20), an upper portion cylinder (5), a lower portion cylinder (15) and a gas pre-distribution chamber (10), wherein the internal of the reactor (23) is provided with a cyclone separator (22), the cyclone separator (22) comprises a synthesizer outlet (1) arranged on the upper portion, a primary cyclone separator (2) arranged on the middle portion, and a primary cyclone discharge pipe (6) arranged on the lower portion, the middle portion of the primary cyclone separator (2) is provided with a primary cyclone separator inlet (19), and the terminal end of the primary cyclone discharge pipe (6) is provided with a primary cyclone discharge pipe baffle (8). According to the present invention, the organic silicon monomer synthesis fluidized bed reactor has characteristics of simple structure, durability, low cost, safety and environmental protection; the U-shaped tube heat exchanger is adopted to replace the straight pipe so as to overcome the disadvantages of non-uniform upper portion and lower portion heat exchange of the straight pipe bushing, internal heat loss of the straight pipe and the like; and compared with the conventional U-shaped pipe, the reactor of the present invention has the following advantages that: the problems of ash deposition and coking of the bending pipe and the short pipe, reaction overheating and the like of the traditional U-shaped pipe are solved.

Description

technical field [0001] The invention relates to the technical field of fluidized bed reactors, in particular to a fluidized bed reactor for synthesizing organic silicon monomers. Background technique [0002] In 1941, Rochow first proposed the direct synthesis of organochlorosilanes. In US-2380995, he first described the synthesis of methylchlorosilane by heating methyl chloride and silicon powder particles to 250-300 ° C under the condition of copper as a catalyst. . There are mainly two types of reactors for the industrial production of organosilicon monomers: the stirred bed reactor described in US Patent No. 2,449,821 by Sellers and the fluidized bed reactor described in US Patent No. 2,389,931 by Reed. Direct synthesis of methyl chlorosilane reaction, the solid raw material in the reaction is silicon powder particles, the catalyst is copper powder particles, the gas raw material is methyl chloride, and the reaction process is a gas-solid-solid process, so the fluidized...

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Problems solved by technology

This type of reactor has low production capacity and frequent fluctuations in bed temperature

The oil circulation heat extraction device of the cylindrical bed reactor with simple oil heat extraction is large in scale, the oil preheating system is complex, the start-up time is long, and the energy consumption is large

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