Liquid purification or separation – Processes – Chemical treatment
Patent
1999-01-25
2000-04-18
Simmons, David A.
Liquid purification or separation
Processes
Chemical treatment
210766, 210774, 210908, C02F 172
Patent
active
060511451
ABSTRACT:
A hydrothermal process (10) is integrated into a wastewater treatment facility (12) to fully oxidize an undigested wastewater sludge produced by the treatment facility. A thickened and conditioned feed mixture comprising sludge from the treatment facility is first pressurized to a critical pressure and then heated to a reaction initiating temperature below the critical temperature. An oxidant is injected into the feed mixture at the reaction initiating temperature to initiate an oxidation reaction in low light-off temperature constituents of the feed mixture to produce a partially reacted mixture and raise the temperature of the partially reacted mixture to at least the critical temperature for water in a supercritical water oxidation reactor (52). Heat from the supercritical water oxidation reaction is used to heat the feed mixture and also, to condition the sludge from the wastewater treatment plant preferably by thickening and heating the sludge. The effluent from the supercritical water oxidation reactor (52) may also be used to produce a standard, high quality steam which may be used to drive a steam turbine (72). Solids laden effluent from the supercritical water oxidation reactor (52) is reduced in a pressure reducing arrangement (90).
REFERENCES:
patent: 3876497 (1975-04-01), Hoffman
patent: 4338199 (1982-07-01), Modell
patent: 5035346 (1991-07-01), Kalman
patent: 5240619 (1993-08-01), Copa
patent: 5250193 (1993-10-01), Sawicki et al.
patent: 5252224 (1993-10-01), Modell et al.
patent: 5524665 (1996-06-01), Kolpak
patent: 5543057 (1996-08-01), Whiting et al.
patent: 5651897 (1997-07-01), Lehmann
Griffith James Randolph
Griffith James Walton
Wofford, III William Tracy
Culbertson Russell D.
HydroProcessing, LLC
Morrison Betsey J.
Simmons David A.
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