CN103751942A - Application of multi-component D-type dry powder extinguishing agent in extinguishing aluminum alkyl fire - Google Patents
Application of multi-component D-type dry powder extinguishing agent in extinguishing aluminum alkyl fire Download PDFInfo
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- CN103751942A CN103751942A CN201310737171.8A CN201310737171A CN103751942A CN 103751942 A CN103751942 A CN 103751942A CN 201310737171 A CN201310737171 A CN 201310737171A CN 103751942 A CN103751942 A CN 103751942A
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Abstract
The invention discloses application of a multi-component D-type dry powder extinguishing agent in extinguishing aluminum alkyl fire. An aluminum alkyl fire extinguishing test is executed for multiple times according to a test model, test steps and a test requirement of the D-type Dry Powder Extinguishing Agent GA979-2012; rechecking is executed after the extinguishing agent is sprayed, and the extinguishing time is shorter than or equal to 2min; the surface temperature of aluminum alkyl subjected to extinguishing is reduced to be below 48 DEG C; residual reactants of the flamed-out aluminum alkyl and the extinguishing agent are turned over and stirred to ensure no after-combustion; the dry powder extinguishing agent cannot be exploded in water; (4) the extinguishing effect is lower than or equal to 28Kg/m<2>; the extinguishing success rate is 100 percent.
Description
Technical field
The invention belongs to fire-extinguishing chemical applied technical field, relate in particular to the application of a kind of multicomponent D class powder extinguishing agent in the alkyl aluminum fire that goes out.
Background technology
Alkyl aluminum be alkyl and aluminium directly in conjunction with and the large metalloid aluminum organic compound that forms.General formula AlR3, RnAlX3-n or R3Al2X2(R are alkyl, X is halogeno-group, n=1,2,3).Because the outer shell of metallic aluminium atom has three free electrons, need three alkyl that electronics Cheng Jian is with it provided, so alkyl aluminum is called again trialkylaluminium.Alkyl aluminum class formation is single, and chemical property is close.Chemicals can be used as alkene and the catalyst of other unsaturated polymerizable compound effect, the reducing agent of transition metal complex and alkylating agent are mainly used in organic synthesis, also as rocket fuel, very extensive in petrochemical industry application.
Wherein, the most representative and be most widely used, the harmfulness of the easiest breaking out of fire, fire is maximum, fire attack difficulty maximum be triethyl aluminum.An and also fire that puts out surely other alkyl aluminum of the extinguishing chemical that shows to put out triethyl aluminum fire by fire-extinguishing test.
Therefore, the application is with triethyl aluminum as main study subject, and it has represented the general character of alkyl aluminum class fire, has again own unique characteristic, has solved its Fire-fighting Problems, is the Fire-fighting Problems that has solved alkyl aluminum fire.
The chemical property of triethyl aluminum is active, meets oxygen vigorous reaction can occur, can spontaneous combustion in air, and meet water and blast, human body is had to intense stimulus and corrosiveness, mainly damage respiratory tract and an eye conjunctiva, high concentration sucks can cause pulmonary edema.For triethyl aluminum fire, adopt traditionally the incombustible materials such as dry sand, diatomite or vermiculite power cover or absorb, to block burning, blow-off velocity is slow, and efficiency is low, and the requirement of extinguishant is very large; In recent years, start to adopt dry powder both at home and abroad and take ultra-fine dry powder extinguishing agent etc. as the fire-extinguishing agent of representative, it to be protected, effect is progressive to some extent, but blow-off velocity is slow, and efficiency is low, and the large defect of requirement of extinguishant does not fundamentally solve.Because fire risk is large, harmfulness is large, personnel inconvenience approaches, and people are often in the face of this class fire and uncontrollable; And put out rear easy resume combustion, the reaction residue of triethyl aluminum and extinguishing chemical, still part has the spontaneous combustion of chance air, meets the characteristic that water is blasted, and after fire, scene is difficult to process.The fire-fighting fire extinguishing work of this type of dangerous material production equipment, storage facilities, storehouse.Be one always and make the very worried problem of domestic and international fire-fighting industry.
At present, the domestic alkyl aluminum fire that can go out that is known as mainly contains U.S. Ansul Inc. and German Mei Lima company, and domestic Zhejiang space peace and the producer of other several family expenses ultra-fine dry powder fire extinguishings, we have done respectively test to the product of these several families, and effect is all undesirable, and they remain to cover fire extinguishing is main, and the extinguishing chemical covering easily burns, meeting resume combustion after stirring again after fire extinguishing, reaction residual, part still has the spontaneous combustion of chance air, meets the characteristic that water also can be blasted.
In prior art, the residue after fire extinguishing, can only wait after fire extinguishing, again stirs, and after controlling artificially burning velocity and allowing them burn down completely, could process residue, discarded object.
Summary of the invention
The object of the present invention is to provide a kind of multicomponent D class powder extinguishing agent, be specifically applied to and put out alkyl aluminum fire, and the alkyl aluminum after burning is extinguished and the reaction residual of extinguishing chemical, stable chemical nature, no longer has the spontaneous combustion of chance air, meets the characteristic that water is blasted.Thereby fundamentally solve and take alkyl aluminum hard fire that triethyl aluminum is representative and put out, put out an on-the-spot unmanageable difficult problem after rear easy resume combustion, fire.
Its technical scheme is:
Develop the application of a kind of multicomponent D class powder extinguishing agent in the alkyl aluminum fire that goes out, it is characterized in that:
Test model, test procedure, the test requirements document requiring according to the GA979-2012 < < D class powder extinguishing agent > > alkyl aluminum fire test that repeatedly goes out, fire extinguishing success rate 100%;
Multicomponent D class powder extinguishing agent AEI After End of Injection is checked:
(1) attack time≤the 2min of multicomponent D class powder extinguishing agent;
(2) the alkyl aluminum surface temperature of measuring after fire extinguishing drops to below 48 ℃;
(3) the alkyl aluminum after burning being extinguished and the reaction residual of extinguishing chemical, stir, stir, and do not occur resume combustion; Meeting water does not blast;
(4) fire extinguishing effectiveness≤28Kg/m
2;
(5) test the alkyl aluminum fire that goes out, fire extinguishing success rate 100%.
2. according to the multicomponent D class powder extinguishing agent of applying in the alkyl aluminum fire that goes out claimed in claim 1, it is characterized in that being made by the raw material of following part by weight:
Modification sodium acid carbonate 70～80; Silica gel 7～10; APP: 5～10; Hydrophobic nano-silica 3～5; Stearate 7～10; Anti-caking agent 3～5;
Described modification sodium acid carbonate is that sandwich layer is the sodium acid carbonate particulate of particle diameter 25～30 μ m with stearic acid or the coated sodium acid carbonate particulate of erucyl amide, and coat layer is that thickness is the clad material of 5～200nm;
Described silica gel is particle diameter 5 μ m;
Polymerization degree n=50～1000 of described APP;
Described hydrophobic silica is to carry out chemical modification through dimethyldichlorosilane monomer, or carries out blending physics modification, its particle diameter 20～40nm through polymethyl siloxane;
Described stearate is odium stearate, calcium stearate or barium stearate;
Described anti-caking agent is mica or talcum powder.
3. according to the method for making of the multicomponent D class powder extinguishing agent of applying claimed in claim 1, it is characterized in that step is as follows in the alkyl aluminum fire that goes out:
(1) APP is crushed to average grain diameter≤10 μ m micro mist;
(2) modification sodium acid carbonate, APP micro mist, silica gel, nano silicon, stearate and anti-caking agent are mixed in the air-flow of >=0.5MPa pressure, standby;
(3) by the (2) admixed finepowder of gained, adopt electromagnetic drying stove through 60～80 ℃ of heat treatment 60～120min, be dried;
(4) the (3) admixed finepowder of gained is put into magnetizer, be provided with the magnet of high-intensity magnetic field in magnetizer, standing 120min magnetizes mixed powder;
Performance indications are all better than the standard-required of GA979-2012 < < D class powder extinguishing agent > >, are specifically designed to the D class powder extinguishing agent of the alkyl aluminum class fire that goes out.
The extinguishing mechanism of the application's multicomponent powder extinguishing agent is as follows:
The application's D class powder extinguishing agent has the low and low characteristic of weld point of fusing point, under the alkyl aluminum class temperature conditions of fire starting stage, with regard to energy melting and sintering grow, become cellular shell, densification covers leakage fire position, stop the effusion of fuel gas and hot gas, and by combustible and oxygen isolation, realize physics and cover fire extinguishing; Simultaneously, because the product reacting with extinguishing chemical expand into cellularly, increased the relative cladding thickness of extinguishing chemical, thereby the shortcoming of having avoided extinguishing chemical easily to be burnt has reduced the consumption of extinguishing chemical; The existence of nanometer SiO2, micron APP improves monodispersity and the mobility of the fire extinguishing particulate of 30 μ m left and right, can flow in time and make up the position of burning individually like this, again forms and covers fire extinguishing.There is decomposition reaction in multicomponent extinguishing chemical, catabolite is caught burning free radical OH and H quickly and effectively in the scene of a fire, interrupts pyric chain, realizes rapid chemical fire extinguishing.Meanwhile, catabolite, by complicated chemical reaction, has changed the chemical property of alkyl aluminum; A series of decomposition reaction is all the endothermic reaction in the middle of this, and the product moisture of reaction taken away a large amount of heats, thus fast reducing the surface temperature of scene of a fire combustible.
By to ultra-fine NaHCO
3after surface modification treatment, with compound, improved dispersiveness, mobility and the aerial suspension stability of powder. and can effectively reduce its hygroscopicity and improve dispersive property.
The extinguishing chemical that the application provides has the following advantages:
1. blow-off velocity is fast, and in prior art, the attack time of other D class powder extinguishing agent is more than 200s, and ours all≤120s.
2. consumption is few, the fire extinguishing effectiveness>=40～70kg/m of other extinguishing chemical
2, and the fire extinguishing effectiveness of the application's extinguishing chemical 20～28kg/m only
2, foamite amount lacked near half.
3. cooling is fast, and in the 2min that dusts, fire extinguishing, now measures alkyl aluminum surface temperature and drop to below 48 ℃.
4. residue, the product stable chemical nature after fire extinguishing, no longer has the resume combustion of the air of chance, meets the characteristic of water blast.
The specific embodiment
Embodiment 1
Raw material consumption
The modification sodium acid carbonate using is commercial goods, is that sandwich layer is the sodium acid carbonate particulate of particle diameter 25～30 μ m with stearic acid or the coated sodium acid carbonate particulate of erucyl amide, and coat layer is that thickness is the clad material of 5～200nm;
The silica gel using is commercial goods, particle diameter 5 μ m;
The APP using is commercial goods, its polymerization degree n=50～1000;
The hydrophobic silica using is commercial goods, through dimethyldichlorosilane monomer, carry out chemical modification, or carries out blending physics modification, its particle diameter 20～40nm through polymethyl siloxane;
The odium stearate of using is commercial goods;
The mica using is commercial goods.
The method for making of this multicomponent D class powder extinguishing agent of applying in the alkyl aluminum fire that goes out, step is as follows:
(1) APP is crushed to average grain diameter≤10 μ m micro mist;
(2) modification sodium acid carbonate, APP micro mist, silica gel, nano silicon, stearate and anti-caking agent are mixed in the air-flow of >=0.5MPa pressure, standby;
(3) by the (2) admixed finepowder of gained, adopt electromagnetic drying stove through 60～80 ℃ of heat treatment 60～120min, be dried;
(4) the (3) admixed finepowder of gained is put into magnetizer, be provided with the magnet of high-intensity magnetic field in magnetizer, standing 120min magnetizes mixed powder;
Performance indications are all better than the standard-required of GA979-2012 < < D class powder extinguishing agent > >, are specifically designed to the D class powder extinguishing agent of the alkyl aluminum class fire that goes out.
Application to the application's multicomponent D class powder extinguishing agent in the alkyl aluminum fire that goes out, carry out fire-extinguishing test:
(1) get the multicomponent D class powder extinguishing agent 13.2kg described in the application, be filled in the common dry powder transportable fire extinguisher of 20Kg, fill again nitrogen and do driving gas, be pressurized to after 1.2MPa standby, to being contained in 700 * 770 * 300(length * wide * height) steel disk in the triethyl aluminum of 3kg, after spontaneous combustion 10S, carry out fire-extinguishing test; Result of the test shows: blow-off velocity is fast, only needs 120S left and right; Consumption is few, and fire extinguishing effectiveness is at 20～28Kg/m
2; Cooling is fast, and fire extinguishing in the 2min that dusts is now measured residue alkyl aluminum surface temperature and reached below 48 ℃;
(2) get the multicomponent D class powder extinguishing agent 800kg described in the application, be filled in the fire extinguishing system that meets GB16668-2010 < < powder extinguishing system and parts general technical specifications > >, by fire extinguishing system, put out a fire, test is carried out 30 ㎡ are indoor; It is DN80 that fire extinguishing system extinguishing chemical is carried main pipeline diameter, branch diameter is respectively DN65, DN50 and DN40, pipeline overall length 45m, 16, shower nozzle, apart from ground 3.2m, starting fire extinguishing system to being sub-packed in three 700 * 770 * 300(length * wide * height) triethyl aluminum after 6kg spontaneous combustion 10S in steel disk carries out fire-extinguishing test; While spurting extinguishing chemical, pressurization time is 14.8s, and effective discharge time is 31.4s, and AEI After End of Injection keeps the standing 30min of steel disk.Not resume combustion in AEI After End of Injection 30min, and still have residue triethyl aluminum in dish.AEI After End of Injection is weighed to remaining D class powder extinguishing agent in tank, surplus is 0.5kg, surplus ratio is 0.0625%, multicomponent D class powder extinguishing agent sprays and finishes after 30min, alkyl aluminum after burning is extinguished and the reaction residue of extinguishing chemical are stirred, are stirred, there is not resume combustion, meet water and do not blast; Fire extinguishing success rate 100%.
Embodiment 2
Raw material consumption
All the other are with embodiment 1.
Embodiment 3
Raw material consumption
All the other are with embodiment 1.
Embodiment 4
Raw material consumption
All the other are with embodiment 1.
Embodiment 5
Raw material consumption
All the other are with embodiment 1.
Embodiment 6
Raw material consumption
All the other are with embodiment 1.
Embodiment 7
Raw material consumption
All the other are with embodiment 1.
Embodiment 8
Raw material consumption
All the other are with embodiment 1.
Embodiment 9
The enforcement alkyl aluminum fire test that goes out, result is as follows:
(1) detect respectively the quality index of the multicomponent D class powder extinguishing agent that embodiment 1-8 obtains, all reach or be better than set quota.
(2) get each 20 kilograms, the dry powder of above-described embodiment 1-8, fill respectively transportable fire extinguisher, be pressurized to 1.2MPa, the alkyl aluminum fire experiment of going out respectively.(take triethyl aluminum as representative)
(3) fire extinguishing experiment
Square steel disk: the length of side (700 ± 10) mm, high (300 ± 5) mm, dish wall thickness 2.5mm～3.0mm, steel disk is furnished with square lid;
Square steel disk is placed on level ground, and builds lid.In steel disk, add 3kg triethyl aluminum, open the lid on steel disk, triethyl aluminum spontaneous combustion, the spontaneous combustion time starts fire extinguishing while reaching 10s.During fire extinguishing, control extinguisher valve sample is dropped in steel disk as far as possible with suitable flow, and can not make fuel splash to the place outside steel disk.
Actual attack time is not more than 2min, and dry powder still has residue, and AEI After End of Injection stirs immediately, does not occur resume combustion, thinks the alkyl base aluminium pyrogene merit of going out.
Result of the test is as follows:
D class powder extinguishing system result of the test gathers
Claims (3)
1. the application of multicomponent D class powder extinguishing agent in the alkyl aluminum fire that goes out, is characterized in that:
Test model, test procedure, the test requirements document requiring according to the GA979-2012 < < D class powder extinguishing agent > > alkyl aluminum fire test that repeatedly goes out, fire extinguishing success rate 100%;
Multicomponent D class powder extinguishing agent AEI After End of Injection is checked:
(1) attack time≤the 2min of multicomponent D class powder extinguishing agent;
(2) the alkyl aluminum surface temperature of measuring after fire extinguishing drops to below 48 ℃;
(3) the alkyl aluminum after burning being extinguished and the reaction residual of extinguishing chemical, stir, stir, and do not occur resume combustion; Meeting water does not blast;
(4) fire extinguishing effectiveness≤28Kg/m
2;
(5) test the alkyl aluminum fire that goes out, fire extinguishing success rate 100%.
2. according to the multicomponent D class powder extinguishing agent of applying in the alkyl aluminum fire that goes out claimed in claim 1, it is characterized in that being made by the raw material of following part by weight:
Modification sodium acid carbonate 70～80; Silica gel 7～10; APP: 5～10; Hydrophobic nano-silica 3～5; Stearate 7～10; Anti-caking agent 3～5;
Described modification sodium acid carbonate is that sandwich layer is the sodium acid carbonate particulate of particle diameter 25～30 μ m with stearic acid or the coated sodium acid carbonate particulate of erucyl amide, and coat layer is that thickness is the clad material of 5～200nm;
Described silica gel is particle diameter 5 μ m;
Polymerization degree n=50～1000 of described APP;
Described hydrophobic silica is to carry out chemical modification through dimethyldichlorosilane monomer, or carries out blending physics modification, its particle diameter 20～40nm through polymethyl siloxane;
Described stearate is odium stearate, calcium stearate or barium stearate;
Described anti-caking agent is mica or talcum powder.
3. according to the method for making of the multicomponent D class powder extinguishing agent of applying claimed in claim 1, it is characterized in that step is as follows in the alkyl aluminum fire that goes out:
(1) APP is crushed to average grain diameter≤10 μ m micro mist;
(2) modification sodium acid carbonate, APP micro mist, silica gel, nano silicon, stearate and anti-caking agent are mixed in the air-flow of >=0.5MPa pressure, standby;
(3) by the (2) admixed finepowder of gained, adopt electromagnetic drying stove through 60～80 ℃ of heat treatment 60～120min, be dried;
(4) the (3) admixed finepowder of gained is put into magnetizer, be provided with the magnet of high-intensity magnetic field in magnetizer, standing 120min magnetizes mixed powder;
Performance indications are all better than the standard-required of GA979-2012 < < D class powder extinguishing agent > >, are specifically designed to the D class powder extinguishing agent of the alkyl aluminum class fire that goes out.
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| CN201310737171.8A CN103751942B (en) | 2013-12-27 | 2013-12-27 | Multicomponent D class powder extinguishing agent is in the application in alkyl aluminum fire of going out |
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| CN201310737171.8A CN103751942B (en) | 2013-12-27 | 2013-12-27 | Multicomponent D class powder extinguishing agent is in the application in alkyl aluminum fire of going out |
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| CN105288924A (en) * | 2015-11-20 | 2016-02-03 | 大庆英博消防设备有限公司 | D type dry powder extinguishing agent |
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| CN111514509A (en) * | 2020-05-19 | 2020-08-11 | 四川天地同光科技有限责任公司 | Water-based solid micro-system fire extinguishing agent for extinguishing combustion flame of lithium battery and preparation method thereof |
| CN111888706A (en) * | 2020-08-12 | 2020-11-06 | 安徽博泰电子材料有限公司 | Preparation method of special D-type dry powder extinguishing agent for aluminum alkyl compounds |
| WO2022252601A1 (en) * | 2021-05-31 | 2022-12-08 | 广东邦普循环科技有限公司 | Fire-extinguishing agent capable of extinguishing combustion of aluminum slag, and preparation method therefor and use thereof |
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| CN111514509A (en) * | 2020-05-19 | 2020-08-11 | 四川天地同光科技有限责任公司 | Water-based solid micro-system fire extinguishing agent for extinguishing combustion flame of lithium battery and preparation method thereof |
| CN111514509B (en) * | 2020-05-19 | 2021-06-15 | 四川天地同光科技有限责任公司 | Water-based solid micro-system fire extinguishing agent for extinguishing combustion flame of lithium battery and preparation method thereof |
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| WO2022252601A1 (en) * | 2021-05-31 | 2022-12-08 | 广东邦普循环科技有限公司 | Fire-extinguishing agent capable of extinguishing combustion of aluminum slag, and preparation method therefor and use thereof |
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| US11931614B2 (en) | 2021-05-31 | 2024-03-19 | Guangdong Brunp Recycling Technology Co., Ltd. | Fire-extinguishing agent capable of extinguishing combustion of aluminum slag, and preparation method therefor and use thereof |
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