Organosilicon fluidized bed reactor

Abstract

The present invention relates to an organo-silicon fluidized-bed reactor. It includes fluidized-bed body formed from conical cylinder and upper portion cylinder body. In the top portion of bed body an upper shell cover is fixed and in the bottom portion of conical cylinder a lower shell cover is fixed, in the bed body interior a finger-shaped heat exchange tube is hung, the upper portion of said finger-shaped heat extrange tube is connected with a heat-conducting oil distributor, said heat-conducting oil distributor is tubular double-layer structure, its lower layer tube is oil-feeding cavity and its upper layer tube is oil-returning cavity, two ends of said oil-feeding cavity are communicated with inlet of heat-conducting oil, and two ends of said oil-returning cavity are communicated with outlet of heat-conducting oil, the oil-feeding sleeve of finger-shaped heat exchange tube is communicated with lower layer oil-feeding cavity, and the central oil tube is communicated with upper layer oil-returning cavity.

Description

technical field [0001] The invention relates to a gas-solid phase material mixing reaction device, in particular to a reaction device for gas and solid particles under fluidized conditions. Background technique [0002] In the prior art, the fluidized bed reactor used for the synthesis of methylchlorosilane monomer by the direct method is roughly divided into two types in terms of the arrangement of the heat transfer oil distributor, one is to install a single heat transfer oil distribution box at the upper end of the cylinder , the pendant hanging finger-shaped sleeve bundles connected to the heat transfer oil distribution box and evenly distributed, the two together constitute a heat exchange system of a fluidized bed reactor. The heat transfer oil evenly flows into the pinch of each finger sleeve from the heat transfer oil distribution box, and flows into the heat transfer oil distribution box from the center hole of the finger sleeve after heat exchange, and then flows o...

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Problems solved by technology

This kind of oil cavity in series will lead to uneven temperature between each oil cavity or each group of heat exchange tubes

In addition, this kind of reactor sets the synthesis gas outlet at the center of the bed top, but since the reaction gas directly enters the reaction gas outlet after passing through the heat transfer oil distributor from the bed, a large amount of silicon powder and catalyst contacts will also be brought out

[0003] In addition, the raw material gas inlet of the existing fluidized bed reactor is generally blown directly to the lower part of the distribution plate. Since the gas pressure near the inlet is high, and the pressure far away from the inlet is relatively small, the distribution of this gas Unevenness is easy to form a dead angle in the surrounding area

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