# US 2007/0160750 A1 · Applying solid carbon dioxide to a target material

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- Number: US 2007/0160750 A1
- Document ID: US20070160750A1
- Status: Published application
- Kind: A1
- Application number: 11/542,324
- Filed: 2006-10-02
- Published: 2007-07-12
- Earliest claimed: 2005-10-03
- Assignees: Cryo Response, Inc.
- Inventors: Albert De Mange; Christopher Noel; Gerald Zeilhofer
- Web page: https://patentgrep.com/patent/US20070160750A1

## CPC

- A62C 3/02: for area conflagrations, e.g. forest fires, subterranean fires
- A62C 3/0292: {by spraying extinguishants directly into the fire (A62C3/0242 takes precedence)}
- A62C 99/0027: {Carbon dioxide extinguishers}
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)

## Abstract

Delivery of pelletized carbon dioxide (dry ice) to a target material from a distance, by projection, spraying, or aerial dropping the pelletized carbon dioxide onto the target material using gravity. Delivery may be made by a mobile apparatus. The types of target material with which the present invention is designed to apply may include, e.g., hydrocarbon material, hazardous material, burning material, and the like. The carbon dioxide may be pelletized to diameters in a size range of about 3 mm to 100 mm.

## Claims

### Claim 1

A method of applying carbon dioxide (CO2) in a solid state to a target material, comprising
providing carbon dioxide in pellet form; and
delivering carbon dioxide pellets onto the target material.

### Claim 2 (depends on 1)

The method of claim 1, wherein delivering the carbon dioxide pellets onto a target material is by a nozzle.

### Claim 3 (depends on 1)

The method of claim 1, further comprising storing the pellets in a hopper.

### Claim 4 (depends on 1)

The method of claim 1, wherein delivering carbon dioxide pellets is aided with a nitrogen stream.

### Claim 5 (depends on 4)

The method of claim 4, wherein the nitrogen stream is applied in sufficient quantity such that moisture does not interfere with delivery of the carbon dioxide pellets.

### Claim 6 (depends on 1)

The method of claim 1, wherein the carbon dioxide pellets are provided in a size range of about 3 mm to 100 mm.

### Claim 7 (depends on 1)

The method of claim 1, wherein delivering carbon dioxide in pellets is performed from a support structure, disposed a predetermined distance from the target material.

### Claim 8 (depends on 7)

The method of claim 7, wherein delivering the carbon dioxide pellets onto a target material is by spraying.

### Claim 9 (depends on 7)

The method of claim 7, wherein the support structure is a vehicle.

### Claim 10 (depends on 7)

The method of claim 7, wherein delivering the carbon dioxide pellets is accomplished by dropping the carbon dioxide pellets by gravity onto the target material.

### Claim 11 (depends on 1)

The method of claim 1, wherein providing the carbon dioxide pellets is performed by extruding liquid carbon dioxide into pellet form.

### Claim 12

A support structure for applying carbon dioxide to a target material, comprising:
a pelletizer disposed on the support structure and configured for connection to a source of liquid carbon dioxide;
a storage device disposed on the support structure for storing carbon dioxide pellets; and
a delivery device disposed on the support structure for projecting or spraying carbon dioxide pellets.

### Claim 13 (depends on 12)

The support structure of claim 12, wherein the pelletizer produces carbon dioxide pellets in a size range of about 3 mm to 100 mm.

### Claim 14 (depends on 13)

The support structure of claim 13, wherein the support structure is portable such that the delivery device can project or spray carbon dioxide pellets onto a target material.

### Claim 15 (depends on 13)

The support structure of claim 13, wherein the support structure is disposed on a moveable vehicle.

### Claim 16 (depends on 15)

The support structure of claim 15, wherein the carbon dioxide processing equipment is powered by a generator carried by the moveable vehicle.

### Claim 17 (depends on 12)

The support structure of claim 12, wherein the delivery device utilizes a source of nitrogen for projecting or spraying the carbon dioxide pellets.

### Claim 18 (depends on 12)

The support structure of claim 12, wherein the source of liquid carbon dioxide is an air extraction unit.

### Claim 19 (depends on 12)

The support structure of claim 12, wherein the source of nitrogen is an air extraction unit.

### Claim 20

A method of applying carbon dioxide to extinguish a fire comprising:
pelletizing carbon dioxide into pellets;
storing the pellets in a storage bin; and
pumping the pellets from the storage bin onto the fire by mixing the pellets with nitrogen.