# US 2014/0196503 A1 · Water cooled oxygen lance for use in a float glass furnace and/or float glass furnace using the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0196503 A1
- Document ID: US20140196503A1
- Status: Published application
- Kind: A1
- Application number: 13/742,535
- Filed: 2013-01-16
- Published: 2014-07-17
- Earliest claimed: 2013-01-16
- Assignees: Guardian Industries Corp.
- Inventors: Kevin SIESS; David DOERSCHUG; Russell PARKER
- Web page: https://patentgrep.com/patent/US20140196503A1

## CPC

- C03B 5/2353: {by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances}
- F23C 7/00: Combustion apparatus characterised by arrangements for air supply (inlets for fluidisation air F23C10/20; baffles or shields with air supply passages F23M9/04)
- F23D 14/32: using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D14/38 takes precedence)
- F23L 7/007: {Supplying oxygen or oxygen-enriched air}
- F27D 3/16: Introducing a fluid jet or current into the charge (F27D3/18 takes precedence)
- C03B 2211/30: introducing oxygen into the glass melting furnace separately from the fuel
- F23C 2900/07021: Details of lances
- Y02E 20/34: Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
- Y02P 40/50: Glass production, e.g. reusing waste heat during processing or shaping
- C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D)
- F23D: BURNERS
- 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
- F27D: DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A float glass furnace includes a melting furnace which heats raw materials to form a molten glass batch, a working end where the molten glass batch is cooled, at least one regenerator which introduces heated combustion air into the melting furnace through a port neck, and at least one oxygen lance in or proximate the port neck. The oxygen lance includes a lance pipe in fluid communication with the port neck, an outer shell surrounding the lance pipe, an inlet water passageway in fluid communication with a channel(s) between an exterior surface of the lance pipe and an interior surface of the outer shell, and an outlet water passageway in fluid communication with the channel(s).

## Claims

### Claim 1

A float glass furnace, comprising:
a melting furnace which heats raw materials to form a molten glass batch;
a working end in which the molten glass batch can be cooled before being provided on a tin bath;
at least one regenerator for introducing heated combustion air into the melting furnace through a port neck;
an oxygen lance in the port neck, the oxygen lance comprising: a lance pipe in fluid communication with the port neck; an outer shell surrounding the lance pipe for introducing oxygen gas into the port neck; an inlet cooling water passageway in fluid communication with at least one cooling channel located between an exterior surface of the lance pipe and an interior surface of the outer shell; and an outlet cooling water passageway in fluid communication with the channel, where cooling water is introduced into the oxygen lance via the inlet cooling water passageway and exits the oxygen lance via the outlet cooling water passageway.

### Claim 2 (depends on 1)

The float glass furnace of claim 1, wherein the at least one cooling channel substantially surrounds the lance pipe.

### Claim 3 (depends on 1)

The float glass furnace of claim 1, further comprising a first fin and a second fin, the first fin and the second fin extending from the exterior surface of the lance pipe to the interior surface of the outer shell.

### Claim 4 (depends on 1)

The float glass furnace of claim 1, wherein the at least one channel comprises a first channel portion and a second channel portion, wherein cooling water flows in a first direction in the first channel portion and in a second opposite direction in the second channel portion, the first and second channel portions being in fluid communication with each other proximate at least an end portion of the oxygen lance.

### Claim 5 (depends on 4)

The float glass furnace of claim 4, wherein the first and second channel portions are each formed by the exterior surface of the lance pipe, the interior surface of the outer shell, and first and second fins extending between the exterior surface of the lance pipe and the interior surface of the outer shell.

### Claim 6 (depends on 3)

The float glass furnace of claim 3, wherein the first fin and the second fin are parallel to each other and each extend lengthwise along the exterior surface of the lance pipe from a first end of the outer shell to an area proximate a second end of the outer shell opposite the first end.

### Claim 7

An oxygen lance for use in a float glass furnace, the oxygen lance comprising:
a lance pipe in fluid communication with a port neck;
an outer shell surrounding the lance pipe;
an inlet water passageway in fluid communication with a water cooling channel between an exterior surface of the lance pipe and an interior surface of the outer shell;
an outlet water passageway in fluid communication with the channel.

### Claim 8 (depends on 7)

The lance of claim 7, wherein the channel substantially surrounds the lance pipe.

### Claim 9 (depends on 7)

The lance of claim 7, further comprising a first fin and a second fin, the first fin and the second fin extending outwardly from the exterior surface of the lance pipe to the interior surface of the outer shell.

### Claim 10 (depends on 7)

The lance of claim 7, wherein the channel comprises a first channel portion and a second channel portion, wherein cooling water flows in a first direction in the first channel portion and in a second opposite direction in the second channel portion, the first and second channel portions being in fluid communication with each other proximate at least an end portion of the oxygen lance.

### Claim 11 (depends on 10)

The lance of claim 10, wherein the first and second channel portions are each formed by at least the exterior surface of the lance pipe, the interior surface of the outer shell, and first and second fins extending between the exterior surface of the lance pipe and the interior surface of the outer shell.