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System and method for preparing vanadium battery high-purity electrolyte

專利號(hào)
US10868325B2
公開日期
2020-12-15
申請(qǐng)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(shù)領(lǐng)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(shuō)明書

A feed outlet at the bottom of the vanadium oxytrichloride storage tank 1 is connected with a chloride inlet of the liquid phase hydrolysis reaction tank 2-1 through a pipeline; a clean water inlet of the liquid phase hydrolysis reaction tank 2-1 is connected with a clean water main pipe through a pipeline; an acid gas outlet of the liquid phase hydrolysis reaction tank 2-1 is connected with a tail gas treatment system; a slurry outlet of the liquid phase hydrolysis reaction tank 2-1 is connected with a slurry inlet of the washing filter 2-2 through a pipeline; a clean water inlet of the washing filter 2-2 is connected with the clean water main pipe; a washing liquid outlet of the washing filter 2-2 is connected with a wastewater treatment system through a pipeline; and a solid material outlet of the washing filter 2-2 is connected with a feed inlet of the vanadium pentoxide hopper 3-1 through a pipeline.

A feed outlet at the bottom of the vanadium pentoxide hopper 3-1 is connected with a feed inlet of the vanadium pentoxide screw feeder 3-2; and a feed outlet of the vanadium pentoxide screw feeder 3-2 is connected with a feed inlet of the venturi preheater 4-1 through a pipeline.

權(quán)利要求

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