Hazardous or toxic waste destruction or containment – Destruction or containment of radioactive waste – By fixation in stable solid media
Reexamination Certificate
2011-08-23
2011-08-23
Lorengo, Jerry (Department: 1731)
Hazardous or toxic waste destruction or containment
Destruction or containment of radioactive waste
By fixation in stable solid media
C588S018000, C588S020000, C588S321000, C588S400000, C110S235000, C110S237000, C065S017100
Reexamination Certificate
active
08003845
ABSTRACT:
The invention concerns a process enabling the complete combustion and oxidation of the mineral fraction of combustible waste contained in an apparatus intended to treat waste by direct incineration-vitrification, said process comprising the following steps:a step to add said waste to the apparatus for its depositing on the surface of a molten glass bath contained in the apparatus,an incineration and oxidation step of the waste on the surface of the glass bath,an incorporation step to incorporate combustion products in the glass during which the glass bath, the combustion products and any vitrification additives added to the glass bath are heated until a paste-like, liquid mass is obtained,a step during which said mass is removed from the apparatus and left to cool to obtain finally what is called a confinement matrix, said process being characterized in that the complete combustion and oxidation of the waste is achieved partly during the waste adding step and partly during the waste incineration and oxidation step on the surface of the glass bath, through the presence of holding means enabling the waste to be maintained for a determined time under oxidizing vapors derived from gases added to the apparatus and/or via the addition of oxidants to the waste, during these two steps.
REFERENCES:
patent: 5035735 (1991-07-01), Pieper et al.
patent: 5100453 (1992-03-01), Richards
patent: 5186112 (1993-02-01), Vojtech
patent: 6576807 (2003-06-01), Brunelot et al.
patent: 2008/0264311 (2008-10-01), Pinet et al.
patent: 2 746 037 (1997-09-01), None
Roth, G.; Weisenburger, S.; “Vitrification of high-level liquid waste: glass chemistry, process chemistry and process technology”. Nuclear Engineering and Design 202 (2000) 197-207.
International Search Report for International Application No. PCT/FR2005/050365, mailed Oct. 5, 2005.
Girold Christophe
Pinet Olivier
Commissariat a l''Energie Atomique
Compagnie Generale des Matieres Nucleaires
Lorengo Jerry
Nixon & Peabody LLP
Smith Jennifer A
LandOfFree
Process for the complete combustion and oxidation of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the complete combustion and oxidation of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the complete combustion and oxidation of the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2777052