Hazardous or toxic waste destruction or containment – Processes for making harmful chemical substances harmless,... – By reacting with chemical agents
Reexamination Certificate
2011-03-29
2011-03-29
Silverman, Stanley (Department: 1736)
Hazardous or toxic waste destruction or containment
Processes for making harmful chemical substances harmless,...
By reacting with chemical agents
C588S313000, C588S400000, C588S405000, C210S758000, C210S761000, C210S908000
Reexamination Certificate
active
07915474
ABSTRACT:
An improved oxidization process may be used to oxidize a wide variety of feedstocks. Oxidation takes place in a reactor where the feedstock is mixed with an oxidizing acid, such as nitric acid. The reaction mixture may also include a secondary oxidizing acid such as sulfuric acid as well as water and/or dissolved and mechanically mixed oxygen gas. The reactor may be maintained at an elevated pressure such as at least approximately 2070 kPa or desirably at least approximately 2800 kPa. The temperature of the reaction mixture may be maintained at no more than 210° C. In the various embodiments described herein, the process may include: combining recycled effluent from the reactor with the feedstock, combining one or more oxidizing acids with the feedstock, comminuting the feedstock to reduce the size of the particles, feeding the feedstock into the high pressure reactor at an approximately constant feed rate, dispersing oxygen gas from the headspace of the reactor into the reaction mixture, and/or removing all or almost all of the gas from the reactor through the liquid effluent.
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Information about Related Patents and Patent Applications, see the section of the accompanying Information Disclosure Statement Letter entitled “Related Patents and Patent Applications” for further information.
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Draper Malcolm
Foster George G.
Kesler Frederick P.
Earth Renewal Group, LLC
Fiorito James A
Holland & Hart LLP
Silverman Stanley
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