# US 9,518,734 B2 · Fluid distribution and mixing grid for mixing gases

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- Number: US 9,518,734 B2
- Document ID: US9518734B2
- Status: Granted
- Kind: B2
- Application number: 13/751,399
- Filed: 2013-01-28
- Published: 2014-07-31
- Granted: 2016-12-13
- Earliest claimed: 2013-01-28
- Assignees: General Electric Technology GmbH
- Applicants: ALSTOM Technology Ltd
- Inventors: Mitchell B. Cohen; Yen-Ming Chen; Armand A. Levasseur
- Web page: https://patentgrep.com/patent/US9518734B2

## CPC

- F23J 15/02: of purifiers, e.g. for removing noxious material (traps for solid residues F23J3/04)
- B01F 23/10: Mixing gases with gases
- B01F 25/31322: {used simultaneously}
- B01F 25/31331: {Perforated, multi-opening, with a plurality of holes}
- F23C 9/00: Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber (fluidised bed combustion apparatus with means for recirculation of particles entrained from the bed F23C10/02; fluidised bed combustion apparatus with devices for removal and partial reintroduction of material from the bed F23C10/26)
- F23L 7/007: {Supplying oxygen or oxygen-enriched air}
- F23J 15/022: {for removing solid particulate material from the gasflow}
- F23L 2900/07001: Injecting synthetic air, i.e. a combustion supporting mixture made of pure oxygen and an inert gas, e.g. nitrogen or recycled fumes
- Y02E 20/32: Direct CO2 mitigation
- Y02E 20/34: Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
- F23J: REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G7/06)
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)
- F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D)
- F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A grid for distributing and mixing fluids in a duct includes a plurality of lances arranged in a first plane and configured to be positioned transverse to a direction of a first fluid flowing outside of the lances and within a predetermined flow area. Each of the plurality of lances has at least one first inlet and a plurality of outlet nozzles. One or more of the outlet nozzles is directed generally in the flow direction of the first fluid outside of the lances, and is configured to discharge a second fluid therefrom.

## Claims

### Claim 1

An oxy-combustion system comprising:
a furnace defining an interior combustion area;
an oxygen supply system;
a fuel supply system defining a primary flue gas inlet and a fuel outlet;
at least one flue gas processing system positioned downstream of and in communication with the furnace;
a primary gas system defining a primary flue gas outlet, the primary gas system being in communication with the at least one flue gas processing system and the primary flue gas outlet being in fluid communication with the fuel inlet;
a secondary gas system defining a secondary flue gas outlet, the secondary gas system being in communication with the at least one flue gas processing system and the secondary flue gas outlet being in communication with the furnace;
at least one oxygen discharge line being in communication with at least one of the primary gas system and the secondary gas system; and
a grid positioned in a duct of at least one of the primary gas system and the secondary gas system, the grid comprising:
a plurality of lances arranged in a first plane and positioned transverse to a flow direction of a flue gas outside of the lances and within a predetermined flow area;
each of the plurality of lances having at least one oxygen inlet and a plurality of outlet nozzles, the oxygen inlet being in communication with the oxygen supply system; and
at least one of the outlet nozzles being directed generally in the flow direction of the of flue gas outside of the lances, and configured to discharge oxygen therefrom;
wherein the plurality of lances includes a set of upper lances extending downwardly and a set of lower lances extending upwardly in the duct; and
wherein each of the upper lances vertically align with a respective lower lance, and further comprising at least one sleeve moveable positioned between at least one of the upper lance and lower lance.

### Claim 2 (depends on 1)

The oxy-combustion system of claim 1, wherein the primary gas system is in communication with at least one of the furnace, an oxidant preheater, a particulate removal system, a sulfur removal system, a flue gas cooler and a carbon dioxide removal system.

### Claim 3 (depends on 1)

The oxy-combustion system of claim 1, wherein the secondary gas system is in communication with at least one of an oxidant preheater, a particulate removal system, a sulfur removal system, a flue gas cooler and a carbon dioxide removal system.

### Claim 4 (depends on 1)

The oxy-combustion system of claim 1, further comprising an oxidant preheater in communication with the primary gas system and the secondary gas system, wherein the grid is positioned at least one of upstream of the oxidant preheater and downstream of the oxidant preheater.

### Claim 5 (depends on 1)

The oxy-combustion system of claim 1, further comprising an oxidant preheater in communication with the primary gas system and the secondary gas system, wherein the grid is positioned downstream of the oxidant preheater.

### Claim 6 (depends on 1)

The oxy-combustion system of claim 1, wherein the first plane is positioned substantially perpendicular to the direction of the flue gas flowing outside of the lances.

### Claim 7 (depends on 1)

The oxy-combustion system of claim 1, wherein the plurality of lances extend vertically in the duct.

### Claim 8 (depends on 1)

The oxy-combustion system of claim 1, wherein the plurality of lances extend horizontally in the duct.

### Claim 9 (depends on 1)

The oxy-combustion system of claim 1, further comprising at least one flow control device in communication with at least one of the plurality of lances.

### Claim 10 (depends on 9)

The oxy-combustion system of claim 9, further comprising a control system in communication with the at least one control device for controlling flow of the oxygen into the at least one of the plurality of lances.

### Claim 11 (depends on 10)

The oxy-combustion system of claim 10, wherein the at least one control devices is a valve.

### Claim 12 (depends on 1)

The oxy-combustion system of claim 1 wherein at least one of the plurality of lances has at least one of the nozzles positioned at an angle of about 30 to about 60 degrees, relative to the direction of the flue gas flowing outside of the lances.

### Claim 13 (depends on 1)

The oxy-combustion system of claim 1, wherein at least one of the plurality of lances has at least one of the nozzles positioned at an angle of about 12.5 to about 32.5 degrees, relative to the direction of the flue gas flowing outside of the lances.