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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(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.

說明書

A gas inlet of the venturi cooler 7-1 is connected with the purified nitrogen gas main pipe; a gas outlet of the venturi cooler 7-1 is connected with a gas inlet of the cyclone cooler 7-2 through a pipeline; a gas outlet of the cyclone cooler 7-2 is connected with a gas inlet of the second cyclone separator 7-3 through a pipeline; a feed outlet of the cyclone cooler 7-2 is connected with a feed inlet of the secondary cooling device 8 through a pipeline; the gas outlet of the second cyclone separator 7-3 is connected with a gas inlet of the gas heater 5-4 through a pipeline; and a feed outlet of the second cyclone separator 7-3 is connected with a feed inlet of the secondary cooling device 8 through a pipeline.

A feed outlet of the secondary cooling device 8 is connected with a feed inlet of the low-valence vanadium oxide hopper 9-1 through a pipeline; a process water inlet of the secondary cooling device 8 is connected with a process water main pipe through a pipeline; and a water outlet of the secondary cooling device 8 is connected with a water cooling system through a pipeline.

A feed outlet at the bottom of the low-valence vanadium oxide hopper 9-1 is connected with a feed inlet of the low-valence vanadium oxide screw feeder 9-2; and a feed outlet of the low-valence vanadium oxide screw feeder 9-2 is connected with a feed inlet of the dissolution reactor 10 through a pipeline.

權(quán)利要求

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