INTEGRATED PROCESS FOR PRODUCTION OF OZONE AND OXYGEN
First Claim
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1. A process for producing oxygen and ozone, comprising:
- (a) compressing an air feed stream;
(b) introducing the compressed air stream into an air separation unit to produce a purified oxygen stream;
(c) introducing the purified oxygen stream into an ozone generator to produce a resultant stream comprising oxygen and ozone;
(d) compressing the resultant stream;
(e) introducing the compressed resultant stream into a first reactor;
(f) performing an oxidation reaction in the first reactor to produce an oxygen-rich effluent stream;
(g) compressing the oxygen-rich effluent stream from the first reactor;
(h) introducing the compressed oxygen-rich stream into a second reactor; and
(i) performing an oxidation reaction in the second reactor.
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Abstract
Embodiments of the present invention provide systems and methods for efficiently producing both a low-pressure ozone stream and high-pressure oxygen stream using a single air separation unit. The low-pressure ozone stream and high-pressure oxygen stream can be produced with significant energy savings and can be used in variety of applications, including the extraction of precious metals from ore with aqueous oxidation reactors and high-pressure oxidation reactors.
7 Citations
20 Claims
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1. A process for producing oxygen and ozone, comprising:
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(a) compressing an air feed stream; (b) introducing the compressed air stream into an air separation unit to produce a purified oxygen stream; (c) introducing the purified oxygen stream into an ozone generator to produce a resultant stream comprising oxygen and ozone; (d) compressing the resultant stream; (e) introducing the compressed resultant stream into a first reactor; (f) performing an oxidation reaction in the first reactor to produce an oxygen-rich effluent stream; (g) compressing the oxygen-rich effluent stream from the first reactor; (h) introducing the compressed oxygen-rich stream into a second reactor; and (i) performing an oxidation reaction in the second reactor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for producing oxygen and ozone, comprising:
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a first compressor compressing an air feed stream; an air separation unit fluidly connected to the first compressor, the air separation unit being operationally configured to produce a purified oxygen stream from the compressed air feed stream; an ozone generator fluidly connected to the air separation unit, the ozone generator being operationally configured to produce a resultant stream comprising oxygen and ozone from the purified oxygen stream; a first reactor fluidly connected to the ozone generator, the first reactor being operationally configured to oxidize inorganic and/or organic materials and produce an oxygen-rich stream; a second compressor for compressing the oxygen-rich stream; and a second reactor fluidly connected to the second compressor, the second reactor being operationally configured to use the compressed resultant oxygen-rich stream to perform one or more of;
combusting, roasting, autoclaving, and carrying out a high-pressure oxidation reaction. - View Dependent Claims (15, 16, 17, 18)
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19. A process for extracting metals from a refractory ore, the process comprising:
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(a) introducing a first stream containing at least 1 wt % ozone into a first reactor; (b) performing an oxidation reaction of metal ions in an aqueous solution in the first reactor at a first pressure to produce an oxygen-rich stream; (c) introducing the oxygen-rich stream into a second reactor; and (d) performing an oxidation reaction on the refractory ore in the second reactor at a second pressure that is equal to or greater than the first pressure. - View Dependent Claims (20)
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Specification