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Regenerating method for non-fusible aqueous film-forming foam fire extinguishing agent

A foam fire extinguishing agent and water film-forming technology, applied in fire protection equipment and other directions, can solve the problems of difficult removal of anti-solubility polymers, and difficulty in regenerating anti-solubility water-based film-forming foam fire extinguishing agents, achieving low cost, reduction of production costs and investment. less effect

Inactive Publication Date: 2018-01-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the prior art, it is difficult to regenerate the anti-solvent water film-forming foam fire extinguishing agent, and it is difficult to remove the solvent-resistant polymer. agent method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Put 1000kg of 6% type anti-solvent water film-forming foam fire extinguishing agent into the cold storage and freeze into ice cubes. Use an ice crusher to break the ice cubes into fine slag <5mm. Put the ice residue into the centrifuge and centrifuge for 15 minutes until almost no filtrate drips out. In the collected filtrate, add water to 950kg, and mix evenly, that is, a regenerated 6% aqueous film-forming foam fire extinguishing agent, and its performance index meets the requirements of GB15308-2006.

Embodiment 2

[0017] Add 400kg of water to 500kg of 3% type anti-solvent water film-forming foam fire extinguishing agent, and mix well. Place the mixture in the freezer and freeze into ice cubes. Use an ice crusher to break the ice cubes into fine slag <5mm. Put the ice residue into the centrifuge and centrifuge for 15 minutes until almost no filtrate drips out. In the collected filtrate, add water up to 500kg, and mix evenly to obtain a regenerated 3% aqueous film-forming foam fire extinguishing agent, and its performance index meets the requirements of GB15308-2006.

Embodiment 3

[0019] Put 1000kg of 6% type anti-solvent water film-forming foam fire extinguishing agent into the high-level tank in the cold storage through the heat exchanger. The fire extinguishing agent in the high level tank flows into a long metal tank with a certain slope, and the liquid gradually freezes into ice while flowing slowly. Through a set of scrapers, the ice is scraped into slugs, which enter the centrifuge. Centrifuge for 15 minutes until almost no filtrate drips out. In the collected filtrate, add water up to 1000kg, and mix evenly to obtain a regenerated 6% aqueous film-forming foam fire extinguishing agent, and its performance index meets the requirements of GB15308-2006.

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Abstract

The invention relates to a regenerating method for a non-fusible aqueous film-forming foam fire extinguishing agent, and mainly solves the problem that in a non-fusible aqueous film-forming foam fireextinguishing agent in the prior art, water-soluble operation is difficult to remove. The regenerating method for the non-fusible aqueous film-forming foam fire extinguishing agent comprises the following steps: refrigerating the failed 6% type non-fusible aqueous film-forming foam fire extinguishing agent into solid, pulverizing the solid into slag, and centrifuging the slag for 3-15 minutes in acentrifuging machine, wherein filter residue is an aqueous solution of water-soluble macromolecules. A certain amount of water is added in 3% type non-fusible aqueous film-forming foam fire extinguishing agent, and regeneration on the 3% type non-fusible aqueous film-forming foam fire extinguishing agent is carried out as regeneration on the 6% type non-fusible aqueous film-forming foam fire extinguishing agent. According to a prepared mode for the foam fire extinguishing agent, a required amount of water is added in filtrate, and thus, the non-fusible aqueous film-forming foam fire extinguishing agent is regenerated into 3% or 6% type aqueous film-forming foam fire extinguishing agent. By the technical scheme, the problem is solved well. The regenerating method for the non-fusible aqueous film-forming foam fire extinguishing agent can be used for regeneration of the non-fusible aqueous film-forming foam fire extinguishing agent.

Description

technical field [0001] The invention relates to a method for regenerating an anti-solvent water film-forming foam fire extinguishing agent into an water film-forming foam fire extinguishing agent. Background technique [0002] Because the aqueous film-forming foam fire extinguishing agent can form a layer of water film on the surface of certain hydrocarbons, and rely on the double action of foam and water film to extinguish the fire, which improves the fire extinguishing efficiency and the fire resistance of the foam, so it has been developed rapidly after it is successfully developed. . However, after using the foam to extinguish the fire, the fire extinguishing agent residue will be discharged into the environment together with the water, causing environmental pollution. [0003] At least two points of environmental pollution caused by foam fire extinguishing agents deserve special attention. One is that the fluorocarbon surfactants in the fire extinguishing agent may not...

Claims

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Application Information

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IPC IPC(8): A62D1/02
Inventor 吴京峰谈龙妹郎需庆尚祖政蒋婷婷
Owner CHINA PETROLEUM & CHEM CORP
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