# US 7,611,625 B2 · Water oxidization system

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- Number: US 7,611,625 B2
- Document ID: US7611625B2
- Status: Granted
- Kind: B2
- Application number: 11/279,522
- Filed: 2006-04-12
- Published: 2009-09-10
- Granted: 2009-11-03
- Earliest claimed: 2006-04-12
- Assignees: General Atomics
- Inventors: David A. Hazlebeck; John L. Perlman
- Web page: https://patentgrep.com/patent/US7611625B2

## CPC

- C02F 11/086: {in the supercritical state}
- B01J 3/008: {Processes carried out under supercritical conditions}
- B01J 4/002: {Nozzle-type elements (nozzle-type reactors B01J19/26)}
- B01J 19/26: Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
- B01J 2219/00123: adding a temperature modifying medium to the reactants
- B01J 2219/00159: controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
- Y02W 10/30: Wastewater or sewage treatment systems using renewable energies
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

A system and method for oxidizing a feed material includes a reactor vessel that forms an enclosed chamber. The vessel includes a port for introducing the feed material into the chamber where it can be oxidized to create salts and particulates, together with a fluid effluent. After their creation, the salts and particulates flow into a brine pool maintained within the chamber. Thereafter, brine, including salts and particulates, can be removed from the chamber through a vessel outlet. Further, the vessel includes a fluid effluent discharge pipe extending from outside the vessel, through the brine pool, into the chamber. As a result of this structure, the fluid effluent can be separated from the salts and particulates and discharged from the chamber through the pipe, passing through the brine pool.

## Claims

### Claim 1

A system for oxidizing a feed material which includes at least one reactant and water, under conditions wherein the temperature is within a range from above approximately 374° C. to approximately 800° C. and the pressure is above approximately 25 bar, said system comprising:
a hollow, generally cylindrical-shaped reactor vessel creating an enclosed chamber and extending between a first end and a second end;
a port at the first end of said reactor vessel for introducing the feed material into the chamber where the feed material is oxidized to create salts and particulates from the reactant, together with a fluid effluent;
a means in fluid communication with the chamber to selectively introduce a quench fluid into said reactor vessel to maintain a brine pool therein for collecting the salts and particulates;
a means in fluid communication with the brine pool to selectively remove salts and particulates therein from the chamber;
a fluid effluent discharge pipe formed with a lumen, wherein said discharge pipe is affixed to said vessel, with an internal end thereof positioned inside the chamber and an external end thereof positioned outside the vessel for removal of the fluid effluent from the chamber through the lumen; and
a means for reducing salt and particulate entrainment, the reducing means being positioned proximate the fluid effluent discharge pipe, wherein the reducing means includes baffles.

### Claim 2 (depends on 1)

A system as recited in claim 1 further comprising a means for recovering energy from the fluid effluent, the energy recovering means being connected to the external end of the fluid effluent discharge pipe.

### Claim 3 (depends on 2)

A system as recited in claim 2 wherein the energy recovering means includes a turbine.

### Claim 4 (depends on 2)

A system as recited in claim 2 wherein the energy recovering means includes an engine.

### Claim 5 (depends on 2)

A system as recited in claim 2 further comprising a means for recovering heat from the fluid effluent, the heat recovery means being positioned between the external end of the fluid effluent discharge pipe and the energy recovering means.

### Claim 6 (depends on 2)

A system as recited in claim 2 wherein the selectively removing means removes a volume of brine from the brine pool, and the system further comprises a means for recovering heat from the brine.

### Claim 7 (depends on 1)

A system as recited in claim 1 wherein the means for selectively introducing the quench fluid includes means for controlling the temperature of the brine pool and the brine concentration.

### Claim 8 (depends on 7)

A system as recited in claim 7 wherein the quench fluid includes a neutralizing agent.

### Claim 9 (depends on 1)

A system as recited in claim 1 wherein the chamber comprises:
a back-mixing section positioned proximate the first end of the vessel;
a jet assembly for jet mixing the feed material in the back-mixing section to initiate reaction of the feed material; and
a plug flow section positioned between the back-mixing section and the brine pool for carrying out additional reaction.

### Claim 10

A system for oxidizing a feed material which includes at least one reactant and water, under conditions wherein the temperature is within a range from above approximately 374° C. to approximately 800° C. and the pressure is above approximately 25 bar, said system comprising:
a hollow, generally cylindrical-shaped reactor vessel creating an enclosed chamber and extending between a first end and a second end;
a port at the first end of said reactor vessel for introducing the feed material into the chamber where the feed material is oxidized to create salts and particulates from the reactant, together with a fluid effluent;
a quench inlet in fluid communication with the chamber to selectively introduce a quench fluid into said reactor vessel to maintain a brine pool therein for collecting the salts and particulates;
a brine outlet in fluid communication with the brine pool to selectively remove salts and particulates therein from the chamber;
a fluid effluent discharge pipe formed with a lumen, wherein said discharge pipe is affixed to said vessel, with an internal end thereof positioned inside the chamber and an external end thereof positioned outside the vessel for removal of the fluid effluent from the chamber through the lumen; and
a means for reducing salt and particulate entrainment, the reducing means being positioned proximate the fluid effluent discharge pipe, wherein the reducing means includes baffles.

### Claim 11 (depends on 10)

A system as recited in claim 10 wherein the chamber comprises:
a back-mixing section positioned proximate the first end of the vessel;
a jet assembly for jet mixing the feed material in the back-mixing section to initiate reaction of the feed material; and
a plug flow section positioned between the back-mixing section and the brine pool for carrying out additional reaction.