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Title: Photoreactor with self-contained photocatalyst recapture

Abstract

A system for the continuous use and recapture of a catalyst in liquid, comprising: a generally vertical reactor having a reaction zone with generally downwardly flowing liquid, and a catalyst recovery chamber adjacent the reaction zone containing a catalyst consisting of buoyant particles. The liquid in the reaction zone flows downward at a rate which exceeds the speed of upward buoyant migration of catalyst particles in the liquid, whereby catalyst particles introduced into the liquid in the reaction zone are drawn downward with the liquid. A slow flow velocity flotation chamber disposed below the reaction zone is configured to recapture the catalyst particles and allow them to float back into the catalyst recovery chamber for recycling into the reaction zone, rather than being swept downstream. A novel 3-dimensionally adjustable solar reflector directs light into the reaction zone to induce desired photocatalytic reactions within the liquid in the reaction zone.

Inventors:
Issue Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175164
Patent Number(s):
6827911
Application Number:
09/708,963
Assignee:
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS

Citation Formats

Gering, Kevin L. Photoreactor with self-contained photocatalyst recapture. United States: N. p., 2004. Web.
Gering, Kevin L. Photoreactor with self-contained photocatalyst recapture. United States.
Gering, Kevin L. Tue . "Photoreactor with self-contained photocatalyst recapture". United States. https://www.osti.gov/servlets/purl/1175164.
@article{osti_1175164,
title = {Photoreactor with self-contained photocatalyst recapture},
author = {Gering, Kevin L.},
abstractNote = {A system for the continuous use and recapture of a catalyst in liquid, comprising: a generally vertical reactor having a reaction zone with generally downwardly flowing liquid, and a catalyst recovery chamber adjacent the reaction zone containing a catalyst consisting of buoyant particles. The liquid in the reaction zone flows downward at a rate which exceeds the speed of upward buoyant migration of catalyst particles in the liquid, whereby catalyst particles introduced into the liquid in the reaction zone are drawn downward with the liquid. A slow flow velocity flotation chamber disposed below the reaction zone is configured to recapture the catalyst particles and allow them to float back into the catalyst recovery chamber for recycling into the reaction zone, rather than being swept downstream. A novel 3-dimensionally adjustable solar reflector directs light into the reaction zone to induce desired photocatalytic reactions within the liquid in the reaction zone.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {12}
}

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Works referenced in this record:

News: Titanium dioxide photocatalysis: Treatment hype or hope?
journal, June 1996


An investigation of titanium dioxide photocatalysis for the treatment of water contaminated with metals and organic chemicals
journal, September 1993


Collection optics of titanium dioxide photocatalyst on hollow glass microbeads floating on oil slicks
journal, April 1992


Chemical Oxidation Technologies: Ultraviolet Light/Hydrogen Peroxide, Fenton's Reagent, and Titanium Dioxide-Assisted Photocatalysis
journal, January 1993