Method for diluting and/or ejecting clouds of flammable gases

Patent metadata

Field	Value
Publication number	US-9561392-B2
Application number	US-201314410970-A
Country	US
Kind code	B2
Filing date	Jun 25, 2013
Priority date	Jul 2, 2012
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

The invention relates to the use of a gas or liquid-jet curtain generated by spraying non-flammable gases or liquids for diluting and/or ejecting clouds of flammable gases, the density of which does not exceed the density of air, from containments that have one or more outer openings, and also to a method for diluting and/or ejecting clouds of flammable gases, the density of which does not exceed the density of air, from containments that have one or more outer openings, wherein, by spraying non-flammable gases or liquids at at least one outer opening, a gas or liquid-jet curtain is generated that dilutes the clouds of flammable gases situated in the containment or bears them in the direction of the at least one outer opening and thus ejects them.

First claim

The invention claimed is:

1. A method for diluting clouds of flammable gases from a containment comprising an outer opening using a gas-jet curtain, the method comprising:
spraying a non-flammable gas or liquid at at least one outer opening of the containment to form a gas-jet curtain at the opening;
diluting the clouds of flammable gases from the containment in the gas-jet curtain; and
ejecting the diluted flammable gases from the containment in the flow of the gas jet curtain;
wherein
the gas-jet curtain is generated by exit of a gas or a liquid from a tube which, along a longitudinal axis, has, perpendicularly to the longitudinal axis, boreholes that lie on a common connection line on a tube surface,
and
the flammable gases have a density not exceeding the density of air.

2. The method according to claim 1 , wherein the containment comprises devices for production, processing or storage of the flammable gases.

3. The method according to claim 1 , wherein the flammable gas is selected from the group consisting of acetylene, hydrogen, ammonia, carbon monoxide, a coke oven gas, a landfill gas, a town gas, a biogas, a synthesis gas, methane, natural gas, and a hot flammable gas.

4. The method according to claim 1 , wherein the gas-jet curtain is formed by steam, air, nitrogen or any mixture thereof.

5. The method according to claim 1 , wherein said ejecting proceeds in such a manner that no ignitable mixture of the flammable gases is present outside the containment.

6. The method according to claim 1 , wherein at least 80% of the clouds of flammable gases, during said ejecting, pass through the gas-jet curtain.

7. The method according to claim 1 , wherein
the containment is arranged on the ground, has substantially upright outer walls and is closed at the top by a roof, and
the outer opening is arranged in the roof or in the outer walls immediately bordering the roof.

8. The method according to claim 7 , wherein the gas-jet curtain is at an angle of 45°±10° to the roof or outer wall.

9. The method according to claim 1 , wherein the outer opening has an area of a maximum of 40% of a total outer area of the containment.

10. The method according to claim 1 , wherein the gas-jet curtain has a length of from 0.5 to 6 m.

11. The method according to claim 1 , wherein
the outer opening has a horizontal lower edge, and
the tube extends in parallel to the horizontal lower edge.

Assignees

• Basf Se

Inventors

• Bodizs Levente Csaba
• Windlin Franz Niklaus
• Gumbel Klaus Peter
• Fischer Johannes
• Odenwald Oliver
• Denecke Jens

Classifications

• A62C2/04 Primary

  Removing or cutting-off the supply of inflammable material · CPC title

• A62C3/06

  of highly inflammable material, e.g. light metals, petroleum products · CPC title

• A62C99/0018

  using gases or vapours that do not support combustion, e.g. steam, carbon dioxide · CPC title

• A62C2/08

  Water curtains (nozzles A62C31/02) · CPC title

• A62C3/14

  in connection with doors, windows, ventilators, partitions, or shutters, e.g. automatic closing · CPC title