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Composite aerosol fire extinguishing material with bioremediation function and preparation method thereof

A fire extinguishing material and bioremediation technology, applied in fire prevention equipment, etc., can solve the problems of short fire extinguishing distance, high cost, hazards to people and the surrounding environment, etc., and achieve the goal of eliminating toxic substance residues, good anti-reburning performance, and promoting ecological restoration Effect

Inactive Publication Date: 2015-08-05
郑涵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is a main problem of this kind of fire extinguishing agent is that the combustion performance is unstable, the fire extinguishing efficiency is low, the product residue is many, the fire extinguishing speed is difficult to control, and the fire extinguishing effect on oily fires is poor; and many additives used therein also have various toxicity Same title, potential harm to people and the surrounding environment, incorrect use will cause secondary harm and pollution
The cold aerosol fire extinguishing agent uses the compressed gas pressurized injection method to directly inject ultra-fine dry powder fire extinguishing agent particles into the atmosphere to form a smoke screen with a fire extinguishing concentration. It has large volume, short fire extinguishing distance, high cost, and inconvenient use. Unstable fire extinguishing efficiency and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0010] Inoculate Bacillus subtilis in 5ml LB medium, and carry out shaking culture at 35°C for 12 hours, re-inoculate 1ml of the culture into 100ml spore-forming medium, then shake again at 35°C for 60 hours, collect the fermentation broth, The fermentation broth was centrifuged at 6000r / m for 10 min to obtain the bacteria, and the corresponding bacterial dormant spore solid particles A were prepared by vacuum freeze-drying 。

[0011] In terms of weight percentage, formula 1 using composite aerosol fire extinguishing agent is: potassium nitrate 26%, strontium nitrate 20%, ammonium nitrate 5%, potassium carbonate 4%, magnesium powder 7%, trehalose 1%, lactose 1% , sucrose 1%, guanidine sulfamate 1%, nitroguanidine 0.5%, urotropine 2%, dicyandiamide 0.5%, ammonium hydrogen phosphate 2%, ammonium oxalate 2.5%, sodium stearate 0.5% and poly 3% vinyl alcohol, 3% bacterial dormant spore granules A, 5% superfine ammonium polyphosphate powder and 2% graphite powder, 8% phenolic resin...

Embodiment 2

[0013] Inoculate Bacillus licheniformis in 5ml LB medium, and carry out shaking culture at 35°C for 12 hours, re-inoculate 1ml of the culture into 100ml spore-forming medium, then shake again at 35°C for 72 hours, collect the fermentation broth, The fermentation broth was centrifuged at 6000r / m for 10 min to obtain the bacteria, and the corresponding bacterial dormant spore solid particles B were prepared by vacuum freeze-drying 。

[0014] In terms of weight percentage, formula 2 using composite aerosol fire extinguishing agent is: 40% potassium nitrate, 15% strontium nitrate, 5% ammonium nitrate, 8% magnesium powder, 1% trehalose, 1% lactose, guanidine sulfamate 1%, urotropine 2%, ammonium hydrogen phosphate 2%, ammonium oxalate 5% and polyvinyl alcohol 5%, bacterial dormant spore granules B 2%, superfine ammonium polyphosphate powder 6%, phenolic resin 7%, will All the above solid components were thoroughly ground and mixed, and then weighed 1.4 grams of medicament respecti...

Embodiment 3

[0016]Degradability test of bioremediation agent to oil stains: use the residual powder that the aerosol fire extinguishing agent containing bioremediation agent that this embodiment 2 prepares burns to finish, add according to the amount of 10% of oil weight to the 1000% gasoline that is mixed with 1% gasoline and diesel oil Place in a sealed Erlenmeyer flask in a milliliter of water, and incubate on a shaker at 35°C for 12-24 hours with a rotation speed of 150-250rpm. Add the same weight of distilled water as the blank control. At the end of the cultivation, petroleum ether was added to the culture medium, and the oil-in-water emulsion was broken by centrifugation. The organic phase was filtered and dehydrated with granular anhydrous sodium sulfate and placed in a pre-constant weight beaker. The residual oil content in the culture medium was determined by gravimetric method and gas chromatography. Use the following formula to calculate the biodegradation rate (A) of various...

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Abstract

The invention relates to a composite aerosol fire extinguishing material with a bioremediation function. The composite aerosol fire extinguishing material comprises the following components by weight: 55-70% of an oxidant, 5-10% of a combustible agent, 5-15% of a catalytic modification agent, 5-10% of extinguishing flame retardant granules, 2-5% of a bioremediation agent, and 2-8% of a forming additive. The preparation method of the composition includes: fully grinding and mixing the solid components according to the weight percentage, then conducting thermomechanical treatment, and carrying out pressure forming in a pressure die to prepare a grain for filling of fire extinguishing equipment. The fire extinguishing material prepared by the method provided by the invention has efficient fire extinguishing efficiency, no destructive effect on the atmospheric ozone layer, and no harm to organisms and environmental safety, can automatically carry out rapid bioremediation on post-disaster environment toxic pollutants, has good stability and reliability, and can be stored for a long time.

Description

technical field [0001] The invention relates to the field of fire extinguishing agents, in particular to a composite aerosol fire extinguishing material with bioremediation function. Background technique [0002] For a long time, the fire extinguishing agents commonly used at home and abroad mainly include clear water fire extinguishing agent, dry powder fire extinguishing agent, inert gas fire extinguishing agent, foam fire extinguishing agent and halon fire extinguishing agent etc. As far as its overall fire extinguishing performance is concerned, Halon series fire extinguishing agents are widely used for their high fire extinguishing efficiency, safety and cleanness, low toxicity and no residue, low corrosion, easy storage, and wide applicability. But research in the 1980s shows that halon fire extinguishing agent has a very large destructive effect on the ozone in the atmosphere, and its production and use have been basically stopped now. So people have been looking for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02A62D3/02
CPCA62D1/06A62D1/0014A62D3/02
Inventor 郑涵杨大胜吴襟
Owner 郑涵
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