HEAT EXCHANGER AND POLYSILICON PRODUCTION SYSTEM USING HEAT EXCHANGER

WIPO Patent Application WO/2024/093271

A1

A heat exchanger, comprising: a shell-side cylinder, a gas-solid separation plate, and a plurality of covers. The shell-side cylinder (1) is vertically arranged and the interior thereof is hollow to form a heat exchange cavity; the top of the shell-side cylinder is provided with a shell-side inlet connecting tube, and the bottom of the shell-side cylinder is provided with a shell-side outlet connecting tube; the gas-solid separation plate is transversely arranged in an upper space of the heat exchange cavity and located below the shell-side inlet connecting tube; a plurality of through holes penetrating through the plate in the thickness direction are distributed on the gas-solid separation plate; each cover covers a corresponding through hole, and the periphery of each cover is located on the periphery of the corresponding through hole, such that solid particles can be prevented from entering the through hole; and a gap is left between the periphery of each cover and the top surface of the gas-solid separation plate, and the gap is communicated with the corresponding through hole, such that gas can enter the through hole through the gap. The present application further discloses a polysilicon production system using the heat exchanger. Compared with the prior art, the present application can reduce the blockage risk of solid particles.

TAO JIANG (CN)
WANG LI (CN)
ZHANG XIANAN (CN)
WANG JIANLIANG (CN)
HU XINGMIAO (CN)
WANG YAN (CN)
WANG YU (CN)
CHEN JIAN (CN)
BAI ZILING (CN)
LIU HANBING (CN)

PCT/CN2023/102260

May 10, 2024

June 26, 2023

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ZHENHAI PETROCHEMICAL JIANAN ENG CO LTD (CN)

F28D7/02; F28F9/00

NINGBO CHANNEL PATENT ATTORNEYS OFFICE (65 South Jiefang Road Haishu Distric, Ningbo Zhejiang 0, CN)

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