CN105944276A - Composite high-performance dry powder extinguishing agent and preparation process - Google Patents
Composite high-performance dry powder extinguishing agent and preparation process Download PDFInfo
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- CN105944276A CN105944276A CN201610353157.1A CN201610353157A CN105944276A CN 105944276 A CN105944276 A CN 105944276A CN 201610353157 A CN201610353157 A CN 201610353157A CN 105944276 A CN105944276 A CN 105944276A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0007—Solid extinguishing substances
- A62D1/0014—Powders; Granules
Abstract
The invention discloses a composite high-performance dry powder extinguishing agent, which is prepared from the following raw materials in parts by weight: 22 to 28 parts of alkali slag, 23 to 29 parts of potassium sulphate, 28 to 36 parts of potassium iodate, 14 to 19 parts of marlstone, 9 to 15 parts of polybutylene, 38 to 45 parts of ammonium sulfate, 32 to 39 parts of ammonium phosphate, 12 to 16 parts of silicon nitride, 6 to 10 parts of glass fiber, 8 to 12 parts of graphite powder, and 15 to 22 parts of coal ash. When the composite high-performance dry powder extinguishing agent is used for extinguishing, the injected powder covers the surface of an inflamer so as to form a layer of thin film, so that the contact of the inflamer and oxygen is cut off, the spread of flame is avoided, and meanwhile, the flaming smoke is suppressed; and the composite high-performance dry powder extinguishing agent is low in moisture rate, high in electrical insulation, good in low temperature resistance, high in injection performance, high in fire extinguishing efficiency, and applicable to fighting various fires such as solid fires, combustible gas fires and liquid fires.
Description
Technical field
The invention belongs to powder base extinguishing chemical technical field, especially relate to a kind of composite high-performance powder extinguishing agent and preparation
Technique.
Background technology
Powder extinguishing agent is (stearic by fire extinguishing base material (such as sodium bicarbonate, ammonium carbonate, the ammonium salt etc. of phosphoric acid) and moderate lubrication agent
Acid magnesium, mica powder, Pulvis Talci etc.), co-ground is made after a small amount of anti-blushing agent (silica gel) mixing fine particle, use carbon dioxide
Make injection power.The powder ejected, concentration is intensive, fine particles, covers and can constitute obstruction burning on solid burning article
Sealing coat, separate out non-combustible gas simultaneously, make the oxygen concentration in air reduce, fray-out of flame.The fire extinguish injection of 8kg
The 14-18 second, range about 4.5m.It is applicable to put out the article such as oils, imflammable gas, electric equipment from the beginning of fire.
Along with national energy security implementation and the fast development of economic society, in order to ensure that the energy of China is pacified
Entirely, promoting the sustainable development of China economy, the large of oil tank will become the inexorable trend of development, and potential large area
Liquid pool fire and trickling fire fire incident risk are also constantly increasing, and oil tank once breaking out of fire endangers huge.The use of extinguishing chemical
Key effect is played in the fire attack of tank field.Common extinguishing chemical has gas, dry powder class, water system and the big class of foam four,
Tank field fire is frequently with fire foam and powder extinguishing agent at present, and powder extinguishing agent has flowing dry, easy, good protection against the tide
Property and the feature such as caking performance, but the temperature reduction performance that existing powder extinguishing agent is when putting out a fire to save life and property large area liquid pool fire and trickling fire
Poor with anti-resume combustion, extinguishing effect is the best, it addition, when for stereo burning type fire, be difficult to be attached to the vertical of burning objects
In dignity, easily coming off, extinguishing effect is limited.
In existing powder extinguishing agent, publication number CN 103877693 A(application number 201210559872.2) patent public
Open a kind of composite dry powder extinguishing chemical and preparation method thereof, contained by the mass percent of shared system: magnesium hydroxide 80-94%,
Bromo-3,3,3-trifluoro propene (BTP) 5.0-16% of 2-, Pulvis Talci 1.0-4.0%.Publication number CN 104324476 A(application number
201410676182.4) patent discloses a kind of powder extinguishing agent and the method preparing powder extinguishing agent with ammonium dihydrogen phosphate,
It is made up of according to quality proportioning following composition: ammonium dihydrogen phosphate 37.3-75.4%；Ammonium sulfate 15.0-40.0%；Raw material white carbon
1.5-2.5%；Muscovitum 1.5-2.5%；Active hargil 1.5-3.0%；Silicon dioxide 3.7-41.8%；Emulsified silicone oil 1.4-2.0.Open
Number CN 104307132 A(application number 201410653316.0) patent disclose the preparation side of a kind of ABC powder extinguishing agent
Method, comprises the following steps: (1) is by MAP, ammonium sulfate, nano silicon, Muscovitum, tripolycyanamide, tetramethylolmethane, manganese
Compound, Borax, Schweinfurt green and coupling agent mix according to weight ratio, and mixture is warmed up to 50-60 DEG C, spray into silicone oil in above-mentioned mixed
In compound, obtain product D；(2) with continuous modification laminating machine, product D being carried out pulverization process, the grain diameter to more than 50% is less than
40 microns, 70 DEG C are stirred 30-40min with 400-1000rpm, dry products therefrom 2-3h, be cooled to 60 DEG C for 90-100 DEG C, cold
But 10-20min, obtains ABC powder extinguishing agent；In described ABC powder extinguishing agent, each weight percentages of components is: MAP
60-85%, ammonium sulfate 10-27%, nano silicon 5-15%, Muscovitum 1-3%, silicone oil 1-2%, tripolycyanamide 1-2%, tetramethylolmethane
2-3%, manganese compound 0.5-0.7%, Borax 0.2-0.6%, Schweinfurt green 0.1-0.4%, coupling agent 0.2-0.3%, total weight percent
It is 100%.
Existing powder extinguishing agent generally exist fire extinguishing effectiveness problem low, seriously polluted, release smog resume combustion big, anti-poor
Etc. defect.These deficiencies constrain the practical ranges of powder extinguishing agent the most to a certain extent.
Summary of the invention
For the deficiency of existing composite high-performance powder extinguishing agent, an object of the present invention is to provide one compound height
Performance powder extinguishing agent, when using it to put out a fire, the powder of ejection covers and forms thin film on the surface of comburant, blocks
With contacting of oxygen, stoping spreading of flame, suppress the smog of burning simultaneously, fire-fighting efficiency resume combustion high, anti-is good, it is adaptable to flutter
Rescue polytype fire such as solid fire, fuel gas fire, liquid fire.Another object is just to provide above-mentioned composite high-performance dry powder
The preparation method of extinguishing chemical.
The above-mentioned purpose of the present invention is achieved through the following technical solutions:
Composite high-performance powder extinguishing agent, takes off and states the raw material of weight proportion and be prepared from: alkaline residue 22-28 part, potassium sulfate 23-29
Part, potassium iodate 28-36 part, marl 14-19 part, polybutene 9-15 part, ammonium sulfate 38-45 part, ammonium phosphate 32-39 part, nitridation
Silicon 12-16 part, glass fibre 6-10 part, graphite powder 8-12 part, flyash 15-22 part.
Composite high-performance powder extinguishing agent, preferred scheme is, takes off and states the raw material of weight proportion and be prepared from: alkaline residue
24-26 part, potassium sulfate 25-27 part, potassium iodate 30-34 part, marl 16-18 part, polybutene 11-13 part, ammonium sulfate 40-43
Part, ammonium phosphate 34-37 part, silicon nitride 13-15 part, glass fibre 7-9 part, graphite powder 9-11 part, flyash 18-20 part.
Composite high-performance powder extinguishing agent, scheme more preferably is, takes off and states the raw material of weight proportion and be prepared from: alkali
Slag 25 parts, potassium sulfate 26 parts, potassium iodate 33 parts, 17 parts of marl, polybutene 12 parts, 42 parts of ammonium sulfate, 36 parts of ammonium phosphate, nitridation
Silicon 14 parts, glass fibre 8 parts, graphite powder 10 parts, 19 parts of flyash.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 30-40 mesh sieve, be placed in jet mill, pulverize
Time is 25-35 minute, continuously adds alkaline residue and silicon nitride when current stabilization, pulverizes 35-45 minute；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil, mix homogeneously, stand 3-5 hour, pass through micronizing
Machine is pulverized so that ammonium sulfate and the particle size distribution of ammonium phosphate after pulverizing meet in 0.12mm standard screen for 0.0-
4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is 10-20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 2-4 hour at 79-94 DEG C, add poly-
Butylene, mixes 5-8 minute at 55-62 DEG C, is cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
20-30 minute, it is heated to 55-60 DEG C, adds step (1) gains, isothermal holding 2-4 hour；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 68-74 DEG C and isothermal holding 40-60
Minute, adding emulsified silicone oil, the silication time is 80-100 minute, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dries；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: the use of step (2) preferably silicone oil
Amount is ammonium sulfate and the 30% of ammonium phosphate quality for the consumption of ammonium sulfate and the 25%-35% of ammonium phosphate quality, more preferably silicone oil.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: step (3) is preferably at 83-90
Stir at DEG C 2.5-3.5 hour, more preferably stir 3 hours at 86 DEG C.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: step (3) is preferably at 57-60
Mix at DEG C 6-7 minute, more preferably mix 7 minutes at 58 DEG C.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: step (5) is preferably warming up to
70-72 DEG C and isothermal holding 45-55 minute, be more preferably warming up to 71 DEG C and isothermal holding 50 minutes.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: step (5) preferably emulsified silicone oil
3-5 times that consumption is flyash quality, the more preferably consumption of emulsified silicone oil is 4 times of flyash quality.
The preparation method of above-mentioned composite high-performance powder extinguishing agent, preferred scheme is: step (6) preferably dries temperature
For 140-155 DEG C, drying time be 100-140 minute, more preferably dry temperature be 149 DEG C, drying time be 120 minutes.
The fire-fighting principle of composite high-performance powder extinguishing agent of the present invention:
Composite high-performance powder extinguishing agent of the present invention endothermic decomposition in burned flame produces ammonia, phosphoric acid, nitrogen etc., finally can
Generate P205, play the effect of Chemical Inhibition fire extinguishing, each of which step reaction is all the endothermic reaction, has preferably cooling effect；
And the OH radical reaction that the free ammonia decomposing generation can produce in reacting with flame combustion, reduce and terminate combustion reaction and produce
Raw free radical, reduces combustion rate, when in flame, the concentration of free ammonia is sufficiently high, sufficiently large with flame contact area,
When free radical stops the speed that speed generates more than combustion reaction, looping combustion reaction is terminated, and causes fray-out of flame.Meanwhile,
It is residual that composite high-performance powder extinguishing agent of the present invention can generate one layer of vitreous film in solid matter surface during decomposing
Stay covering to be covered in comburant surface, form covering after cooling and make burning surface and air exclusion, when covering reaches one
Resume combustion can be stoped when determining thickness.
The beneficial effects are mainly as follows:
When 1, using composite high-performance powder extinguishing agent of the present invention fire extinguishing, the OH free radical produced in not only reacting with flame combustion
Reaction, and the powder that sprays covers and forms thin film on the surface of comburant, has blocked and the contacting of oxygen, has stoped fire
Spreading of flame, absorbs heat simultaneously, accelerates fire extinguishing.
2, composite high-performance powder extinguishing agent technological process of the present invention is simple, and raw material is cheap and easy to get, and hydroscopicity is low, electric insulation
Property high, lower temperature resistance is good, jet performance is high, fire-fighting efficiency is high, environmentally friendly, can be widely applied to various extinguishing device, suitable
For polytype fire such as solid fire of putting out a fire to save life and property, fuel gas fire, liquid fire.
3, composite high-performance powder extinguishing agent of the present invention has nature humidity resistance, it is to avoid due to silicon after commonly powder body is heated
Oil melts and is difficult to the deficiency cleared up.
4, composite high-performance powder extinguishing agent effect of the present invention is rapid, effectively reduces loss, has the most economic effect
Benefit, is suitable for large-scale promotion and uses, have wide actual application prospect.
5, composite high-performance powder extinguishing agent of the present invention both can use separately as extinguishing chemical, it is also possible to as common dry
The additive of powder, is directly filled in existing fire extinguisher, it is not necessary to carry out fire extinguisher redesigning transformation.
Detailed description of the invention
Describe technical scheme in detail below in conjunction with embodiment and experimental example, but protection domain is not limited by this.
Primary raw material brief introduction is as follows:
Alkaline residue: referring to the waste residue of discharge in ammonium alkaline process alkali producing process, composition mainly includes the calcium such as calcium carbonate, calcium sulfate, calcium chloride
Salt is the waste residue of key component, possibly together with compositions such as a small amount of sulfur dioxide.Alkaline residue solution meta-alkalescence, pH value, can about 10
For improveing acid and subacidity soil, also act as the architecture engineering materials such as adsorbent, cement.
Potassium sulfate: be colourless or white crystals, granule or powder under usual condition.Odorlessness, bitter in the mouth, aqueous solution in
Property.It is at high temperature to react with 98% sulphuric acid and potassium chloride, through inspissation, crystallisation by cooling, centrifugation, it is dried and prepares.Main
Purposes is wanted to have serum albumin biochemical investigation, kjeldahl determination catalyst, prepare other potassium salt, chemical fertilizer, dyestuff, spice, medicine, system
Standby glass, Alumen etc..
Potassium iodate: for colourless or white crystalline powder, odorlessness.Preparation potassium iodate standard solution.For analyze zinc, iodine,
Arsenic.Volumetric method analysis is used as oxidant.In chemical analysis, make precipitant；Agriculturally make feed additive；Pharmaceutically make
Iodizing compound or medicament that the local goiter of preventing and treating is sick are it can also be used to organic synthesis.
Marl: refer to the transitional type sedimentary rock between clay rock and carbonate rock, micro-by clay and carbonate
Grain composition, in microgranular or pureed structure.Be often referred to be mixed with clay mineral by flour sand and mud level carbonate form a kind of pine,
Soft, frangible newer sedimentary rock.Widely distributed marine facies marl is often containing autochthonous fossil and the residuum of microfossil.
Industrial can be as cement raw material and building stone.
Polybutene: be to be the colourless or pale yellow viscous liquid of a small amount of n-butene copolymerization of advocating peace with isobutene., be used for
Oil dope, the intermediate of oil dope；Lubricating oil, bonding agent, the raw material of plasticizer；Itself also can be directly used as lubrication
Impregnation oils in agent, high tension cable, compressor oil；Due to odorless, nontoxic, can be used for and the process of Food Contact paper；Also use
Make the base starting material of chewing gum.
Ammonium sulfate: for colourless crystallization or white particle, odorlessness.It is mainly used as fertilizer, it is adaptable to various soil and crop.
Can be additionally used in the aspects such as weaving, leather, medicine.Add in electroplate liquid and can increase electric conductivity.Also it is the catalyst of food caramel, fresh
The nitrogen source of culture yeasts bacterium, acid dyeing dyeing auxiliaries, leather deliming agent in yeast production.Additionally, be additionally operable to brewing,
Chemical reagent and storage battery production etc..
Ammonium phosphate: for clear crystal or pale powder, be granule sometimes, soluble in water.It is that a kind of high concentration N-P is multiple
Hefei is expected, can be used as the germinator of sugarcane production.Also serve as wood fire retardant, the water softener that water processes, biological culture agent, analyze
Chemical reagent.It is widely used in expanding fire-proof paint, polyethylene, polypropylene, polyurethane, epoxy resin, rubber, fiber
Plate and powder extinguishing agent etc., be a kind of to use safe efficient phosphorus system halogen-free smoke resistance flame resistance agent.Apply also for other resins, gluing
Agent and coating.
Silicon nitride: for Lycoperdon polymorphum Vitt, white or grayish white powdery crystal.For manufacturing bearing, blade of gas turbine, mechanical seal
The mechanical component such as ring, permanent mold, the high grade refractory of the aspects such as the parts of high temperature engineering, metallurgical industry,
Glass fibre: be to be manufactured into through high temperature melting, wire drawing, doff, the technique such as weave cotton cloth with glass bead or discarded glass for raw material
, a diameter of several microns of its monofilament to twenties meters micron, every bundle fiber precursor is all by hundreds of the most thousands of lists
Silk composition.It is mainly composed of silicon dioxide, aluminium oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide etc., good insulating, heat-resisting
Property strong, corrosion resistance good, mechanical strength is high, the reinforcing material being typically used as in composite, electrically insulating material and adiabatic heat-insulation
Material, the national economy every field such as circuit substrate.
Graphite powder: the present invention uses for aquadag powder, there is high temperature resistant, the character of high intensity.In metallurgical industry
In be mainly used to manufacture graphite crucible, in steel-making, conventional graphite makees the protective agent of steel ingot, the liner of metallurgical furnace, stores as plumbic acid
Battery pole plates, lithium battery both positive and negative polarity conductive agent, ni-mh, nickel-cadmium cell, light sensation battery, electrical carbon brush, rubber, filler for plastic, anti-
Electrostatic, electromagnetic shielding, anticorrosive paint etc..
Flyash: be to receive the flue gas after coal combustion to catch the fine ash got off, is that the primary solids that coal-burning power plant discharges gives up
Thing.Oxide consists of: SiO2、Al2O3And a small amount of FeO, Fe2O3、CaO、MgO、SO3、TiO2Deng.Wherein SiO2And Al2O3Contain
Amount can account for more than the 60% of total content.
Embodiment 1 composite high-performance powder extinguishing agent, takes off and states raw material and be prepared from (every part takes 23kg): alkaline residue 22 parts,
Potassium sulfate 23 parts, potassium iodate 28 parts, 14 parts of marl, polybutene 9 parts, 38 parts of ammonium sulfate, 32 parts of ammonium phosphate, silicon nitride 12 parts,
Glass fibre 6 parts, graphite powder 8 parts, 15 parts of flyash.
Composite high-performance powder extinguishing agent preparation method, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 30 mesh sieves, be placed in jet mill, grinding time
It is 25 minutes, when current stabilization, continuously adds alkaline residue and silicon nitride, pulverize 35 minutes；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil (consumption is ammonium sulfate and the 25% of ammonium phosphate quality), mixed
Close uniformly, stand 3 hours, pulverized by super micron mill so that the ammonium sulfate after pulverizing and the particle size distribution of ammonium phosphate
Meet in 0.12mm standard screen for 0.0-4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is 10-
20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 2 hours at 79 DEG C, add polybutene,
Mix 5 minutes at 55 DEG C, be cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
20 minutes, it is heated to 55 DEG C, adds step (1) gains, isothermal holding 2 hours；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 68 DEG C of also isothermal holding 40 minutes, add
Entering emulsified silicone oil 3 times of flyash quality (consumption be), the silication time is 80 minutes, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dry (dry temperature be 140 DEG C, drying time be 100 minutes)；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Embodiment 2 composite high-performance powder extinguishing agent, takes off and states raw material and be prepared from (every part takes 14kg): alkaline residue 28 parts,
Potassium sulfate 29 parts, potassium iodate 36 parts, 19 parts of marl, polybutene 15 parts, 45 parts of ammonium sulfate, 39 parts of ammonium phosphate, silicon nitride 16 parts,
Glass fibre 10 parts, graphite powder 12 parts, 22 parts of flyash.
Composite high-performance powder extinguishing agent preparation method, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 40 mesh sieves, be placed in jet mill, grinding time
For 25-35 minute, when current stabilization, continuously add alkaline residue and silicon nitride, pulverize 45 minutes；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil (consumption is ammonium sulfate and the 35% of ammonium phosphate quality), mixed
Close uniformly, stand 5 hours, pulverized by super micron mill so that the ammonium sulfate after pulverizing and the particle size distribution of ammonium phosphate
Meet in 0.12mm standard screen for 0.0-4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is 10-
20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 4 hours at 94 DEG C, add polybutene,
Mix 8 minutes at 62 DEG C, be cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
30 minutes, it is heated to 60 DEG C, adds step (1) gains, isothermal holding 4 hours；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 74 DEG C of also isothermal holding 60 minutes, add
Entering emulsified silicone oil 5 times of flyash quality (consumption be), the silication time is 100 minutes, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dry (dry temperature be 155 DEG C, drying time be 140 minutes)；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Embodiment 3 composite high-performance powder extinguishing agent, takes off and states raw material and be prepared from (every part takes 15kg): alkaline residue 24 parts,
Potassium sulfate 25 parts, potassium iodate 30 parts, 16 parts of marl, polybutene 11 parts, 40 parts of ammonium sulfate, 34 parts of ammonium phosphate, silicon nitride 13 parts,
Glass fibre 7 parts, graphite powder 9 parts, 18 parts of flyash.
Composite high-performance powder extinguishing agent preparation method, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 33 mesh sieves, be placed in jet mill, grinding time
It is 28 minutes, when current stabilization, continuously adds alkaline residue and silicon nitride, pulverize 38 minutes；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil (consumption is ammonium sulfate and the 28% of ammonium phosphate quality), mixed
Close uniformly, stand 3.5 hours, pulverized by super micron mill so that ammonium sulfate and the granularity of ammonium phosphate after pulverizing are divided
Cloth meets in 0.12mm standard screen for 0.0-4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is
10-20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 2.5 hours at 83 DEG C, add poly-fourth
Alkene, mixes 6 minutes at 57 DEG C, is cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
23 minutes, it is heated to 57 DEG C, adds step (1) gains, isothermal holding 2-4 hour；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 70 DEG C of also isothermal holding 45 minutes, add
Entering emulsified silicone oil 3.5 times of flyash quality (consumption be), the silication time is 85 minutes, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dry (preferably dry temperature be 145 DEG C, drying time be 110 points
Clock)；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Embodiment 4 composite high-performance powder extinguishing agent, takes off and states raw material and be prepared from (every part takes 14kg): alkaline residue 26 parts,
Potassium sulfate 27 parts, potassium iodate 34 parts, 18 parts of marl, polybutene 13 parts, 43 parts of ammonium sulfate, 37 parts of ammonium phosphate, silicon nitride 15 parts,
Glass fibre 9 parts, graphite powder 11 parts, 20 parts of flyash.
Composite high-performance powder extinguishing agent preparation method, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 38 mesh sieves, be placed in jet mill, grinding time
It is 32 minutes, when current stabilization, continuously adds alkaline residue and silicon nitride, pulverize 42 minutes；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil (consumption is ammonium sulfate and the 32% of ammonium phosphate quality), mixed
Close uniformly, stand 4.5 hours, pulverized by super micron mill so that ammonium sulfate and the granularity of ammonium phosphate after pulverizing are divided
Cloth meets in 0.12mm standard screen for 0.0-4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is
10-20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 3.5 hours at 89 DEG C, add poly-fourth
Alkene, mixes 7 minutes at 60 DEG C, is cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
27 minutes, it is heated to 59 DEG C, adds step (1) gains, isothermal holding 3.5 hours；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 72 DEG C of also isothermal holding 55 minutes, add
Entering emulsified silicone oil 4.5 times of flyash quality (consumption be), the silication time is 95 minutes, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dry (dry temperature be 151 DEG C, drying time be 130 minutes)；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Embodiment 5 composite high-performance powder extinguishing agent, takes off and states raw material and be prepared from (every part takes 20kg): alkaline residue 25 parts,
Potassium sulfate 26 parts, potassium iodate 33 parts, 17 parts of marl, polybutene 12 parts, 42 parts of ammonium sulfate, 36 parts of ammonium phosphate, silicon nitride 14 parts,
Glass fibre 8 parts, graphite powder 10 parts, 19 parts of flyash.
Composite high-performance powder extinguishing agent preparation method, step is as follows:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 35 mesh sieves, be placed in jet mill, grinding time
For 25-35 minute, when current stabilization, continuously add alkaline residue and silicon nitride, pulverize 40 minutes；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil (consumption is ammonium sulfate and the 30% of ammonium phosphate quality), mixed
Close uniformly, stand 4 hours, pulverized by super micron mill so that the ammonium sulfate after pulverizing and the particle size distribution of ammonium phosphate
Meet in 0.12mm standard screen for 0.0-4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is 10-
20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 3 hours at 86 DEG C, add polybutene,
Mix 7 minutes at 58 DEG C, be cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
25 minutes, it is heated to 58 DEG C, adds step (1) gains, isothermal holding 3 hours；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 71 DEG C of also isothermal holding 50 minutes, add
Entering emulsified silicone oil 4 times of flyash quality (consumption be), the silication time is 90 minutes, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dry (dry temperature be 149 DEG C, drying time be 120 minutes)；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Test example: in order to verify the effect of composite high-performance powder extinguishing agent (embodiment 1-5) of the present invention, we have done right
Than test, respectively using embodiment 1-5 products obtained therefrom as experimental group；Matched group uses other powder extinguishing agents (purchased from Zhe Jiangding
Power security against fire Science and Technology Ltd.), measure extinguishing effect, hydroscopicity, electrical insulating property, lower temperature resistance, jet performance etc. respectively
Performance indications.
1, the mensuration of extinguishing effect
The 10m that fire-extinguishing test space is 2m*2m*2.5m that fire fighting test uses3Confined space relatively, ambient temperature is 10-30
DEG C, ventilate and the condition that illuminates does not affects the free combustion of fuel.In experiment, tray for combustion is that length and width are 31.64cm, highly
For the square food tray of 16cm, food tray floor space 0.1m2, bottom clear water is made rebasing, away from ground 22cm bottom food tray, and the combustion of selection
Material is ethanol, and consumption is 3L.First bottom food tray, add a certain amount of water, measured for graduated cylinder ethanol is poured in food tray, then
Igniting, enabling pre-burning 30s, close test space door, spray into a certain amount of powder extinguishing agent, record attack time.Result of the test
As shown in table 1.
Table 1 extinguishing effect correction data
As it can be seen from table 1 in above-mentioned fire fighting test, with other powder extinguishing agents (purchased from top, Zhejiang power security against fire science and technology
Company limited) to compare, composite high-performance powder extinguishing agent of the present invention all can be with less foamite amount within the shorter time
Fire extinguishing.The attack time such as using the embodiment of the present invention 5 gained composite high-performance powder extinguishing agent 88 g is 9.4s, and uses
The attack time of other powder extinguishing agents of 194g is up to 13.6s, so the fire extinguishing of composite high-performance powder extinguishing agent of the present invention
Can be substantially better than the extinguishing property of other powder extinguishing agents, fire-fighting efficiency is high.
2, the detection of hydroscopicity, electrical insulating property, lower temperature resistance, jet performance etc.
Composite high-performance powder extinguishing agent of the present invention is (limited purchased from top, Zhejiang power security against fire science and technology with other powder extinguishing agents
Company) carry out the detection of hydroscopicity, electrical insulating property, lower temperature resistance, jet performance etc. respectively.
The mensuration of hydroscopicity: in the weighing botle of constant weight, weighs powder extinguishing agent 2g, is accurate to 0.2mg；By weighing botle
Exempt from lid and be placed in temperature (21 ± 3) DEG C, relative humidity be 75%-80% constant-temperature constant-humidity environment in 24h；Taking-up weighing botle is added a cover and is placed in
In exsiccator, weigh after standing 15min, be accurate to 0.2mg.Hydroscopicity X1 =(m2-m1)/m1× 100%, wherein m1Before moisture absorption
Ultra-fine dry powder extinguishing agent quality, unit is gram (g)；m2For ultra-fine dry powder extinguishing agent quality after moisture absorption, unit is gram (g).Take difference
The meansigma methods of the value twice result of the test less than 0.05% is as measurement result.
The electrical insulating property of powder extinguishing agent uses FT-401 powder extinguishing agent electrical insulating property tester (big purchased from Ningbo Rui Ke
Industry Instrument Ltd.) it is measured.
The mensuration of lower temperature resistance: weigh powder extinguishing agent 20g, be accurate to 0.2g, is placed in the test tube of dried and clean, will examination
Pipe is put into after jumping a queue in-55 DEG C of environment 1 hour, takes out test tube so that it is tilted until being inverted at 2s, records it with stopwatch whole
The time flowed down, take the meansigma methods of 3 result of the tests.
The mensuration of jet performance: the powder extinguishing agent that quality is (2250*Db ± 10) g is loaded special-purpose ejecting device (wherein
Db is the bulk density of dry powder extinguisher, g/ml), and carbon dioxide cartridge is installed on the device head of ejector, then device head
It is fixed on special-purpose ejecting device；Ejector is fixed on falling test stand, with the frequency of 0.417Hz, from (25.0 ± 1.5) mm
Height fall 250 times；By in the drying baker of ejector placement (49 ± 2) DEG C 8 hours；Take out ejector, start after punching press 5s
Injection, until distress resolves；Remaining powder extinguishing agent quality in weighing ejector.Then X2=(m3-m4)/m3* 100%, wherein m3
For the quality of powder extinguishing agent in ejector before injection, unit is gram (g), m4For the matter of powder extinguishing agent in ejector after injection
Amount, unit is gram (g).Take the meansigma methods of 3 result of the tests.
Concrete condition is as shown in table 2:
Table 2 hydroscopicity, electrical insulating property, lower temperature resistance, the contrast of jet performance
By table 2 it is apparent that either hydroscopicity, electrical insulating property, lower temperature resistance, or jet performance, the present invention is combined
High-performance dry-powder extinguishing chemical is all excellent than other powder extinguishing agent performances, is worth of widely use, has bigger application prospect.
Finally it should be noted that embodiment is the optimum detailed description of the invention of the present invention, be not limited to this
Invention, although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it depends on
So the technical scheme described in foregoing embodiments can be modified, or wherein portion of techniques feature is carried out equivalent replace
Change.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (10)
1. composite high-performance powder extinguishing agent, is characterized in that, takes off and states the raw material of weight proportion and be prepared from: alkaline residue 22-28 part,
Potassium sulfate 23-29 part, potassium iodate 28-36 part, marl 14-19 part, polybutene 9-15 part, ammonium sulfate 38-45 part, ammonium phosphate
32-39 part, silicon nitride 12-16 part, glass fibre 6-10 part, graphite powder 8-12 part, flyash 15-22 part.
Composite high-performance powder extinguishing agent the most according to claim 1, is characterized in that, take off the raw material system stating weight proportion
For forming: alkaline residue 24-26 part, potassium sulfate 25-27 part, potassium iodate 30-34 part, marl 16-18 part, polybutene 11-13 part, sulfur
Acid ammonium 40-43 part, ammonium phosphate 34-37 part, silicon nitride 13-15 part, glass fibre 7-9 part, graphite powder 9-11 part, flyash 18-
20 parts.
Composite high-performance powder extinguishing agent the most according to claim 1, is characterized in that, take off the raw material system stating weight proportion
For forming: alkaline residue 25 parts, potassium sulfate 26 parts, potassium iodate 33 parts, 17 parts of marl, polybutene 12 parts, 42 parts of ammonium sulfate, ammonium phosphate
36 parts, silicon nitride 14 parts, glass fibre 8 parts, graphite powder 10 parts, 19 parts of flyash.
4. according to the preparation method of the arbitrary described composite high-performance powder extinguishing agent of claim 1-3, it is characterized in that, step is such as
Under:
(1) raw-material pulverizing
(1) marl and glass fibre routine are pulverized, mix homogeneously, cross 30-40 mesh sieve, be placed in jet mill, pulverize
Time is 25-35 minute, continuously adds alkaline residue and silicon nitride when current stabilization, pulverizes 35-45 minute；
(2) ammonium sulfate and ammonium phosphate are placed in container, add silicone oil, mix homogeneously, stand 3-5 hour, pass through micronizing
Machine is pulverized so that ammonium sulfate and the particle size distribution of ammonium phosphate after pulverizing meet in 0.12mm standard screen for 0.0-
4.9%；0.06mm standard screen is 10-20%；0.04mm standard screen is 10-20%；Chassis is 60-75%；
(2) mixing of material
(3) by potassium sulfate and potassium iodate mix homogeneously, it is placed in nitrogen atmosphere, stirs 2-4 hour at 79-94 DEG C, add poly-
Butylene, mixes 5-8 minute at 55-62 DEG C, is cooled to room temperature；
(4) ammonium sulfate and ammonium phosphate after step (2) being pulverized are sequentially placed in blender with step (3) products therefrom, stirring
20-30 minute, it is heated to 55-60 DEG C, adds step (1) gains, isothermal holding 2-4 hour；
(5) flyash is joined in step (4) products therefrom, mix homogeneously, be warming up to 68-74 DEG C and isothermal holding 40-60
Minute, adding emulsified silicone oil, the silication time is 80-100 minute, adds graphite powder, mix homogeneously；
(3) dry
(6) step (5) products therefrom is placed in dehydrator, dries；
(4) screening
(7) step (6) products therefrom being carried out pulverization process, the grain diameter to more than 50% is less than 40 microns, passes through vibrating sieving machine
Product after pulverizing is sieved, screens out the bulky grain of particle diameter >=100 micron, packaging.
Preparation method the most according to claim 4, is characterized in that: the consumption of step (2) preferably silicone oil is ammonium sulfate and phosphorus
The 25%-35% of acid ammonium quality, the more preferably consumption of silicone oil is ammonium sulfate and the 30% of ammonium phosphate quality.
Preparation method the most according to claim 4, is characterized in that: step (3) preferably stirs 2.5-3.5 at 83-90 DEG C
Hour, more preferably stir 3 hours at 86 DEG C.
Preparation method the most according to claim 4, is characterized in that: step (3) preferably mixes 6-7 minute at 57-60 DEG C,
More preferably mix 7 minutes at 58 DEG C.
Preparation method the most according to claim 4, is characterized in that: step (5) is preferably warming up to 70-72 DEG C and isothermal holding
45-55 minute, more preferably it is warming up to 71 DEG C of also isothermal holding 50 minutes.
Preparation method the most according to claim 4, is characterized in that: the consumption of step (5) preferably emulsified silicone oil is flyash
The consumption of 3-5 times of quality, more preferably emulsified silicone oil is 4 times of flyash quality.
Preparation method the most according to claim 4, is characterized in that: step (6) is preferably dried temperature and is 140-155 DEG C, dries
The dry time is 100-140 minute, more preferably dry temperature be 149 DEG C, drying time be 120 minutes.
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| CN111054015A (en) * | 2019-12-13 | 2020-04-24 | 海天消防科技股份有限公司 | Novel combined dry powder extinguishing agent and preparation method thereof |
| CN116943090A (en) * | 2023-06-13 | 2023-10-27 | 湖北及安盾消防科技有限公司 | Chemical coolant and application thereof in K-type aerosol fire extinguishing agent |
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