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System and method for preparing vanadium battery high-purity electrolyte

專利號
US10868325B2
公開日期
2020-12-15
申請人
INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES; BEIJING ZHONGKAIHONGDE TECHNOLOGY CO., LTD（CN Beijing CN Beijing）
發(fā)明人
Haitao Yang; Qingshan Zhu; Chuanlin Fan; Wenheng Mu; Jibin Liu; Cunhu Wang; Qixun Ban
IPC分類
H01M8/18; H01M10/0562; B01J8/00; B01J8/18; B01J19/00; B01J19/24; C01G31/02; B01J14/00
技術領域
vanadium,cyclone,gas,pipeline,pentoxide,preheater,inlet,valence,outlet,feed
地域： Beijing

摘要

A system and method for preparing a vanadium battery high-purity electrolyte, comprising preparing a low-valence vanadium oxide with a valence of 3.5 with liquid phase hydrolysis and fluidization reduction with vanadium oxytrichloride, adding clean water and sulfuric acid for dissolution, and further performing ultraviolet activation to obtain the vanadium electrolyte, for use in an all-vanadium redox flow battery stack. The high-temperature tail gas in the reduction fluidized bed is combusted for preheating the vanadium powder material, to recover the sensible heat and latent heat of the high-temperature tail gas, and the sensible heat of the reduction product is recovered through heat transfer between the reduction product and the fluidized nitrogen gas. An internal member is arranged in the reduction fluidized bed to realize the precise regulation of the valence state of the reduction product, and ultraviolet is used to activate the vanadium ions, improving the activity of the electrolyte.

說明書

In order to make the object, technical solution, and advantages of the present invention be clearer, the technical solution in the examples of the present invention will be described clearly and completely below with reference to the accompanying drawing of the examples of the present invention. Obviously, the described examples are only a part of the examples of the present invention, not all examples. It is worth noting that the examples are merely used for illustrating the technical solution of the present invention, rather than limiting the present invention. FIG. 1 is a schematic diagram of a system and method for preparing a vanadium battery high-purity electrolyte according to the present invention.

FIG. 1 includes the following designators:

    • 1 Vanadium oxytrichloride storage tank
    • 2 Liquid phase hydrolysis device
    • 2-1 Liquid phase hydrolysis reaction tank
    • 2-2 Washing filter
    • 3 Vanadium pentoxide feeding device
    • 3-1 Vanadium pentoxide hopper
    • 3-2 Vanadium pentoxide screw feeder
    • 4 Preheating system
    • 4-1 Venturi preheater
    • 4-2 Primary cyclone preheater
    • 4-3 Secondary cyclone preheater

權利要求

1
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