Oxidation process

• US 4,174,280 A
• Filed: 10/20/1978
• Issued: 11/13/1979
• Est. Priority Date: 07/17/1974
• Status: Expired due to Term

• Current Assignee: Zimpro Passavant Environment Systems Incorporated
• Original Assignee: Sterling Drug, Inc. (GlaxoSmithKline PLC)
• Inventors: Pradt, Louis A., Gitchel, Wayne B.
• Primary Examiner(s): Wyse, Thomas G.
• Application Number:
  US05/953,270
• Time in Patent Office: 389 Days
• Field of Search: 210/10, 210/50, 210/63 R, 210/67, 210/71, 210/177, 210/178, 210/180, 210/60
• US Class Current: 210/758
• CPC Class Codes: C02F 11/08 Wet air oxidation

Abstract

A process for wet air oxidation of liquid or solid combustible materials which are insoluble, immiscible and difficult to suspend in water which comprises injecting said materials directly into the wet air oxidation reactor, thereby producing a regular, safe and trouble-free reaction.

Claims

1. A process for oxidizing with an oxygen-containing gas in an aqueous medium in a sealed reactor an oxidizable material which is insoluble, immiscible and difficult to suspend or emulsify in water and selected from the group consisting of motor oils, diesel fuel, explosives and propellants, at a temperature and pressure sufficient to provide a controlled autogenic and self-sustaining oxidation reaction, which comprises passing said aqueous medium through a heat exchanger into said sealed reactor in order to heat the aqueous medium up to the required reaction temperature while supplying the reactor with an oxygen-containing gas, and at the same time injecting said oxidizable material directly into said reactor without heating said oxidizable material, thereby producing an oxidized effluent which is removed from the reactor.

2. A process according to claim 1 in which the oxidized effluent is recycled through the heat exchanger back to the reactor.

3. The process according to claim 1 in which the material subjected to oxidation is diesel fuel.

4. The process according to claim 1 in which the material subjected to oxidation is a propellant comprising a mixture of nitrocellulose and nitroglycerin.