System for controlling chemical reaction in a molten metal bath

• US 5,505,143 A
• Filed: 10/07/1994
• Issued: 04/09/1996
• Est. Priority Date: 07/29/1991
• Status: Expired due to Fees

• Current Assignee: Quantum Catalytics LLC
• Original Assignee: Molten Metal Technology Incorporated
• Inventors: Nagel, Christopher J.
• Primary Examiner(s): Bennet, Henry A.
• Assistant Examiner(s): TINKER, SUSANNE CHRISTINE
• Application Number:
  US08/319,950
• Time in Patent Office: 550 Days
• Field of Search: 588/201, 110/344, 110/346, 110/235, 422/168, 422/184
• US Class Current: 110/204
• CPC Class Codes: A62D 2101/04 Pesticides, e.g. insecticides, herbicides, fungicides or nematocides
• CPC Class Codes: A62D 2101/06 Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm
• CPC Class Codes: A62D 2101/20 Organic substances
• CPC Class Codes: A62D 2101/22 containing halogen
• CPC Class Codes: A62D 2101/40 Inorganic substances
• CPC Class Codes: A62D 3/32 by treatment in molten chemical reagent, e.g. salts or metals
• CPC Class Codes: B01D 53/74 General processes for purification of waste gases; Apparatus or devices specially adapted therefor B01D53/92 takes precedence

Abstract

A method and a system is disclosed for controlling chemical reaction of a feed. The feed is directed into a reactor containing a molten metal bath to at least partially chemically react the feed to form an intermediate component. A portion of the intermediate component is combined with an off-gas which is emitted from the molten metal bath. At least a portion of the intermediate is then separated from the off-gas and returned to the molten metal bath. The returned intermediate component is then substantially converted to its atomic constituents. The atomic constituents subsequently exothermically react with other components of the molten metal bath for reaction to form compounds which are substantially stable at the operating conditions of the system, thereby allowing control of chemical reaction of the feed.

Claims

1. A system for controlling chemical reaction of a waste, comprising:

a) a reactor;

b) a molten metal bath disposed in the reactor which allows chemical reaction of the waste;

c) means for directing the waste into the reactor at a temperature sufficient to cause chemical reaction of the waste to form an intermediate component and atomic constituents of the waste;

d) means for forming an off-gas in the reactor which combines with a portion of the intermediate component and is emitted from the reactor;

e) means for separating at least a portion of the intermediate component from off-gas emitted from the reactor to form an intermediate stream; and

f) means for directing said intermediate stream into the reactor for chemical reaction of the intermediate component returned to the reactor in the intermediate stream to atomic constituents and subsequent exothermic reaction of at least a portion of the atomic constituents with a component of the molten metal bath, whereby heat generated by the exothermic reaction initiates additional chemical reaction of the waste and of the intermediate component, thereby controlling chemical reaction of the waste.

2. A system of claim 1 wherein the molten metal bath includes a vitreous phase.

3. A system of claim 2 wherein the vitreous phase includes at least one metal oxide.

4. A system of claim 2 wherein the vitreous phase includes at least one salt.

5. A system of claim 1 wherein the molten metal bath includes at least one molten metal phase.

6. A system of claim 5 wherein the molten metal bath further includes a vitreous phase disposed above the molten metal phase.

7. A system of claim 6 further including means for cooling the emitted off-gas and intermediate component before separating the intermediate component from the off-gas.

8. A system of claim 7 wherein the means for cooling the off-gas and intermediate component includes a hood system.

9. A system for controlling chemical reaction of a waste, comprising:

a) a first reactor;

b) a first molten metal bath disposed in the reactor which allows chemical reaction of the waste;

c) means for directing the waste into the first reactor at a temperature sufficient to cause chemical reaction of the waste to form an intermediate component and atomic constituents of the waste;

d) means for forming an off-gas in the first reactor which combines with a portion of the intermediate component and is emitted from the first reactor;

e) a second reactor;

f) a second molten metal bath disposed in the second reactor which allows chemical reaction of the intermediate component; and

g) means for directing said intermediate component into the second reactor for chemical reaction of the intermediate component directed into the reactor to atomic constituents and subsequent reaction of at least a portion of the atomic constituents with a component of the second molten bath, thereby controlling chemical reaction of the waste.

10. A system of claim 9 wherein the means for directing said intermediate stream into the second reactor include a turbine.

11. A system of claim 9 further comprising:

a) means for separating at least a portion of the intermediate component from off-gas emitted from the first reactor to form an intermediate stream; and

b) means for directing said intermediate stream to the second reactor for chemical reaction of the intermediate component directed into the reactor to atomic constituents and subsequent exothermic reaction of at least a portion of the atomic constituents with a component of the second molten metal bath.

12. A system of claim 11 further comprising means for directing a portion of the intermediate stream into the first reactor for chemical reaction of the intermediate component returned to the first reactor in the intermediate stream to atomic constituents and for subsequent exothermic reaction of at least a portion of the atomic constituents with a component of the first molten metal bath, whereby heat generated by the exothermic reaction initiates additional chemical reaction of the waste and of the intermediate component, thereby controlling chemical reaction of the waste.

13. A system of claim 12 wherein the second molten metal bath includes a vitreous phase.

14. A system of claim 13 wherein the vitreous phase includes at least one metal oxide.

15. A system of claim 13 wherein the vitreous phase includes at least one salt.

16. A system of claim 12 wherein the second molten metal bath includes at least one molten metal phase.

17. A system of claim 16 wherein the second molten metal bath further includes a vitreous phase disposed above the molten metal phase of the second molten bath.