Silicone fluidized bed reactor with vibrating baffle plates

Abstract

The invention discloses a silicone fluidized bed reactor with vibrating baffle plates. The silicone fluidized bed reactor comprises a cylindrical shell, a heat exchange tube in the cylindrical shell and a silicon powder feeding tube, at least one baffle device is arranged in the cylindrical shell, the baffle device comprises a baffle plate a and a baffle plate b, the oblique directions of the baffle plate a and the baffle plate b are opposite to each other, an area formed by the two baffle plates has one large end and one small end, and an elastic member is arranged between the baffle plate aand the baffle plate b. The structure of the reactor allows most of generated silicone gas to flow in the fluidized bed reactor in a zigzag direction. Compared with conventional reactors achieving I-shaped flow, the reactor in the invention has the advantages of long reaction time, sufficiency in the reaction of a chloromethane gas and silicon powder, significant reduction of the required height,rapid reduction of the content of the silicon powder under the layer barrier of the baffle plates, ensuring of the purity of the product silicone gas, and avoiding of deposition of the silicon powderthrough driving the baffle plates to vibrate by a driving device.

Description

technical field [0001] The invention relates to an organic silicon fluidized bed reactor, in particular to an organic silicon fluidized bed reactor with a vibrating baffle. Background technique [0002] One of the key equipment for organosilicon production is the synthesis reactor. At present, the organosilicon reactor mainly adopts a reactor between a fluidized bed and a fixed bed, which is customarily called a fluidized bed reactor in the industry. Because silicon powder is solid, it is difficult to feed silicon powder continuously. Usually, silicon powder is added to the reactor at one time, and methyl chloride gas is continuously fed from the bottom of the reactor. It is a semi-continuous and semi-batch reactor. The fluidized bed is a gas-solid phase reaction, so the baffles in the fluidized bed are the key factors to improve the performance of the reactor. [0003] The baffles in the existing fluidized bed reactor mainly have two structures at present, one is a solid c...

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Problems solved by technology

Usually, the height of the silicon powder is between 5-10 meters, and the diameter of the reactor is 3 meters or more. If a baffle plate with a solid structure is used except for the tube hole, the reaction time between the silicon powder and methyl chloride gas will become longer. long, but solid silicon powder is easy to accumulate on the baffles, which requires irregular cleaning, which is time-consuming and labor-intensive; if a baffle with a hollowed out structure is used except for the tube hole, the size of the fluidized bed reactor must Larger, in order to ensure the complete reaction of silicon powder in the product

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