Finger-type heat exchanger with triple-sleeve structure used in fluidized bed reactor for synthesizing trichlorosilane

一种用于三氯氢硅合成流化床反应器内的具有三套管结构的指形换热器

Abstract

The invention relates to a finger-type heat exchanger with a triple-sleeve structure used in a fluidized bed reactor for synthesizing trichlorosilane, which comprises a heat conduction oil inlet, an upper heat exchange tube seal head, a heat exchange tube connection flange, a plurality of finger-type triple-sleeve heat exchange tubes, and a heat conduction oil outlet, wherein each finger-type triple-sleeve heat exchange tube consists of an inner tube, a liner tube and an outer tube that are sequentially arranged from inside to outside, the upper end and the lower end of an annular interstice space between each inner tube and each liner tube are closed, and each annular interstice space is vacuumed to form a vacuum isolated layer. The heat exchanger solves the problem that oil temperature rises greatly as heat conduction oil enters the annular interstice spaces between the inner tubes and the outer tubes from the inner tubes, the temperature of a fluidized bed can be distributed uniformly, the reaction is stable, and the utilization ratio and the product purity of silicon powder are higher.
本发明涉及一种用于三氯氢硅合成流化床反应器内的具有三套管结构的指形换热器,它包括导热油进口、换热管上封头、换热管连接法兰、若干个指形三套管换热管和导热油出口;所述指形三套管换热管由内管、衬管和外管构成,并依次由里向外排列;所述内管和衬管环隙间上下两端封闭,并抽真空形成真空隔层。本发明解决了导热油由内管进入内外管环隙时温升较大的问题,能够使流化床温度分布均匀、反应稳定,硅粉利用率和产品纯度均较高。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-1059963-AApril 01, 1992阿莫尼·卡萨尔公司, 昂伯托·扎迪高效换热器
    CN-201614289-UOctober 27, 2010江苏福斯特石化装备有限公司三氯氢硅合成炉复合换热结构
    CN-2081075-UJuly 17, 1991中国石油化工总公司, 国家医药管理局上海医药设计院, 上海高桥石油化工公司化工厂大管径套管式急冷换热器
    CN-2791576-YJune 28, 2006蒋瑾瑶高效换热管

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle