CN105944276B - Composite high-performance dry powder fire extinguishing agent and preparation process - Google Patents

Composite high-performance dry powder fire extinguishing agent and preparation process Download PDF

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Publication number
CN105944276B
CN105944276B CN201610353157.1A CN201610353157A CN105944276B CN 105944276 B CN105944276 B CN 105944276B CN 201610353157 A CN201610353157 A CN 201610353157A CN 105944276 B CN105944276 B CN 105944276B
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parts
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fire extinguishing
dry powder
ammonium
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CN105944276A (en
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不公告发明人
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Haimen Textile Co., Ltd. Zhuo Wei
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Haimen Textile Co Ltd Zhuo Wei
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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0007Solid extinguishing substances
    • A62D1/0014Powders; Granules

Abstract

The invention discloses a kind of composite high-performance dry powder fire extinguishing agents, and the raw material of following weight proportions is taken to be prepared: 22-28 parts of alkaline residue, 23-29 parts of potassium sulfate, 28-36 parts of Potassiumiodate, 14-19 parts of marl, 9-15 parts of polybutene, 38-45 parts of ammonium sulfate, 32-39 parts of ammonium phosphate, 12-16 parts of silicon nitride, 6-10 parts of glass fibre, 8-12 parts of graphite powder, 15-22 parts of flyash.When using its fire extinguishing, the powder of ejection is covered on the surface of comburant and forms thin film, the contact with oxygen is blocked, prevent the sprawling of flame, inhibit the smog of burning simultaneously, hydroscopicity is low, electrical insulating property is high, lower temperature resistance is good, jetting performance is high, fire-fighting efficiency is high, is suitable for a plurality of types of fire such as fighting solid fire, fuel gas fire, liquid fire.

Description

Composite high-performance dry powder fire extinguishing agent and preparation process
Technical field
The invention belongs to powder base extinguishing chemical technical fields, more particularly, to a kind of composite high-performance dry powder fire extinguishing agent and preparation Technique.
Background technique
Dry powder fire extinguishing agent is (stearic by fire extinguishing base-material (such as ammonium salt of sodium bicarbonate, ammonium carbonate, phosphoric acid) and moderate lubrication agent Sour magnesium, mica powder, talcum powder etc.), fine particle made of co-ground after a small amount of anti-blushing agent (silica gel) mixing, use carbon dioxide Make injection power.The powder ejected, concentration is intensive, fine particles, and obstruction burning can be constituted on solid burning article by covering Separation layer, while non-combustible gas is precipitated, reduces the oxygen concentration in air, fray-out of flame.The fire extinguish of 8kg sprays 14-18 seconds, range about 4.5m.It is suitable for put out oils, imflammable gas, electrical equipment and other items from the beginning of fire.
With the fast development of national energy security implementation and economic society, in order to guarantee the energy peace in China Entirely, promote the sustainable development of China's economy, the large of oil tank will become the inexorable trend of development, and potential large area Liquid pool fire and fiery fire incident risk of trickling also are increasing, and fire once occurs for oil tank, endangers huge.The use of extinguishing chemical Key effect is played in the fire attack of tank field.Common extinguishing chemical has gas class, four major class of dry powder class, water system and foam, Tank field fire is frequently with fire foam and dry powder fire extinguishing agent at present, and dry powder fire extinguishing agent has drying, Yi Liudong, good moisture-proof Property and the features such as caking performance, but temperature reduction performance of the existing dry powder fire extinguishing agent in fighting large area liquid pool fire and trickling fire Poor with anti-re-ignition, extinguishing effect is bad, in addition, being not easy to be attached to the vertical of burning objects when being used for stereo burning type fire It in dignity, is easy to fall off, extinguishing effect is limited.
In existing dry powder fire extinguishing agent, 103877693 A(application number 201210559872.2 of publication number CN) patent it is public A kind of composite dry powder extinguishing chemical and preparation method thereof has been opened, has been contained by the mass percent of shared system: magnesium hydroxide 80-94%, 2- bromo- 3,3,3- trifluoro propenes (BTP) 5.0-16%, talcum powder 1.0-4.0%.104324476 A(application number of publication number CN 201410676182.4) a kind of method that patent discloses dry powder fire extinguishing agent and prepares dry powder fire extinguishing agent with ammonium dihydrogen phosphate, It is made of following composition according to quality proportioning: ammonium dihydrogen phosphate 37.3-75.4%;Ammonium sulfate 15.0-40.0%;Raw material white carbon black 1.5-2.5%;Mica 1.5-2.5%;Atlapulgite 1.5-3.0%;Silica 3.7-41.8%;Silicone emulsion 1.4-2.0.It is open Number 104307132 A(application number 201410653316.0 of CN) patent disclose a kind of preparation side of ABC dry powder fire extinguishing agent Method, comprising the following steps: (1) by monoammonium phosphate, ammonium sulfate, nano silica, mica, melamine, pentaerythrite, manganese It closes object, borax, copper acetate and coupling agent to mix according to weight ratio, 50-60 DEG C is warming up to mixture, spray into silicone oil in above-mentioned mixed It closes in object, obtains product D;(2) pulverization process is carried out to product D with continuous modification laminating machine, until 50% or more grain diameter is less than 40 microns, 70 DEG C are stirred 30-40min, 90-100 DEG C of drying products therefrom 2-3h with 400-1000rpm, are cooled to 60 DEG C, cold But 10-20min is to get ABC dry powder fire extinguishing agent;Weight percentage of each component in the ABC dry powder fire extinguishing agent are as follows: monoammonium phosphate 60-85%, ammonium sulfate 10-27%, nano silica 5-15%, mica 1-3%, silicone oil 1-2%, melamine 1-2%, pentaerythrite 2-3%, manganese compound 0.5-0.7%, borax 0.2-0.6%, copper acetate 0.1-0.4%, coupling agent 0.2-0.3%, total weight percent It is 100%.
The existing generally existing fire extinguishing effectiveness of dry powder fire extinguishing agent is low, seriously polluted problem, release smog is big, anti-re-ignition is poor The defects of.These deficiencies all constrain the practical ranges of dry powder fire extinguishing agent to a certain extent.
Summary of the invention
For the deficiency of existing composite high-performance dry powder fire extinguishing agent, one of the objects of the present invention is to provide a kind of compound height Performance dry powder fire extinguishing agent, when using its fire extinguishing, the powder of ejection is covered on the surface of comburant and forms thin film, blocks Contact with oxygen, prevents the sprawling of flame, while inhibiting the smog of burning, and fire-fighting efficiency is high, anti-re-ignition is good, suitable for flutterring Rescue a plurality of types of 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.
Above-mentioned purpose of the invention is achieved through the following technical solutions:
Composite high-performance dry powder fire extinguishing agent takes the raw material of following weight proportions to be prepared: 22-28 parts of alkaline residue, potassium sulfate 23-29 parts, 28-36 parts of Potassiumiodate, 14-19 parts of marl, 9-15 parts of polybutene, 38-45 parts of ammonium sulfate, 32-39 parts of ammonium phosphate, 12-16 parts of silicon nitride, 6-10 parts of glass fibre, 8-12 parts of graphite powder, 15-22 parts of flyash.
Composite high-performance dry powder fire extinguishing agent, preferred scheme are that the raw material of following weight proportions is taken to be prepared: alkaline residue 24-26 parts, 25-27 parts of potassium sulfate, 30-34 parts of Potassiumiodate, 16-18 parts of marl, 11-13 parts of polybutene, ammonium sulfate 40-43 Part, 34-37 parts of ammonium phosphate, 13-15 parts of silicon nitride, 7-9 parts of glass fibre, 9-11 parts of graphite powder, 18-20 parts of flyash.
Composite high-performance dry powder fire extinguishing agent, more preferred scheme are that the raw material of following weight proportions is taken to be prepared: alkali 25 parts of slag, 26 parts of potassium sulfate, 33 parts of Potassiumiodate, 17 parts of marl, 12 parts of polybutene, 42 parts of ammonium sulfate, 36 parts of ammonium phosphate, nitridation 14 parts of silicon, 8 parts of glass fibre, 10 parts of graphite powder, 19 parts of flyash.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, are uniformly mixed, crossed 30-40 mesh, be placed in airslide disintegrating mill, Grinding time is 25-35 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 35-45 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, be uniformly mixed, stood 3-5 hours, pass through ultra micro Pulverizer is crushed, so that it is 0.0- in 0.12mm standard screen that the size distribution of smashed ammonium sulfate and ammonium phosphate, which meets, 4.9%;It is 10-20% in 0.06mm standard screen;It is 10-20% in 0.04mm standard screen;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 2-4 hours, add at 79-94 DEG C Enter polybutene, mixes 5-8 minutes, be cooled to room temperature at 55-62 DEG C;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 20-30 minute, is heated to 55-60 DEG C, addition step (1) gains, and isothermal holding 2-4 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, be warming up to 68-74 DEG C and isothermal holding 40-60 minutes, silicone emulsion is added, the silication time is 80-100 minutes, and graphite powder is added, is uniformly mixed;
(3) it dries
(6) step (5) products therefrom is placed in dryer, is dried;
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: the use of step (2) preferably silicone oil Amount is the 25%-35% of ammonium sulfate and ammonium phosphate quality, and the dosage of more preferred silicone oil is the 30% of ammonium sulfate and ammonium phosphate quality.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: step (3) is preferably in 83-90 It stirs 2.5-3.5 hours at DEG C, is stirred 3 hours more preferably at 86 DEG C.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: step (3) is preferably in 57-60 It mixes 6-7 minutes at DEG C, is mixed 7 minutes more preferably at 58 DEG C.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: step (5) is preferably warming up to 70-72 DEG C and isothermal holding 45-55 minutes, more preferably it is warming up to 71 DEG C and isothermal holding 50 minutes.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: step (5) preferred silicone emulsion Dosage be 3-5 times of flyash quality, the dosage of more preferred silicone emulsion is 4 times of flyash quality.
The preparation method of above-mentioned composite high-performance dry powder fire extinguishing agent, preferred scheme are: step (6) preferred drying temperature It is 100-140 minutes for 140-155 DEG C, drying time, more preferred drying temperature is 149 DEG C, drying time is 120 minutes.
The fire-fighting principle of composite high-performance dry powder fire extinguishing agent of the present invention:
Composite high-performance dry powder fire extinguishing agent of the present invention endothermic decomposition in burned flame generates ammonia, phosphoric acid, nitrogen etc., most After can generate P205, play the role of Chemical Inhibition fire extinguishing, each of these step reaction is the endothermic reaction, is had preferably cooling Effect;And decompose the free ammonia generated can be reacted with flame combustion in the OH radical reaction that generates, reduce and terminate burning The free radical generated is reacted, combustion rate is reduced, when the concentration of free ammonia is sufficiently high in flame, with flame contact area foot Enough big, when free radical stops rate greater than the rate that combustion reaction generates, looping combustion reaction is terminated, and leads to fray-out of flame. Meanwhile composite high-performance dry powder fire extinguishing agent of the present invention can be one layer glassy thin in solid matter surface generation during decomposition Film residual covering is covered in comburant surface, and forming covering after cooling makes burning surface and air exclusion, when covering reaches Re-ignition can be prevented when to certain thickness.
The beneficial effects are mainly reflected as follows:
1, when being put out a fire using composite high-performance dry powder fire extinguishing agent of the present invention, not only react with flame combustion in the OH that generates oneself It is reacted, and the powder sprayed is covered on the surface of comburant and forms thin film, has blocked the contact with oxygen, is hindered by base The only sprawling of flame, while heat is absorbed, accelerate fire extinguishing.
2, composite high-performance dry powder fire extinguishing agent process flow of the present invention is simple, and raw material is cheap and easy to get, and hydroscopicity is low, is electrically insulated Property it is high, lower temperature resistance is good, jetting performance is high, fire-fighting efficiency is high, environmentally friendly, can be widely applied to various extinguishing devices, fit For a plurality of types of fire such as solid fire, fuel gas fire, liquid fire of saving.
3, composite high-performance dry powder fire extinguishing agent of the present invention has nature humidity resistance, due to silicon after avoiding common powder heated Oil melts and is difficult to the deficiency cleared up.
4, composite high-performance dry powder fire extinguishing agent effect of the present invention rapidly, effectively reduces loss, has preferable economic effect Benefit is suitble to large-scale promotion to use, and has wide actual application prospect.
5, composite high-performance dry powder fire extinguishing agent of the present invention can both be used separately as extinguishing chemical, can also be used as common dry The additive of powder is directly filled in existing fire extinguisher, does not need to carry out redesign transformation to fire extinguisher.
Specific embodiment
The technical solution of the present invention will be described in detail below with reference to the embodiments and experimental examples, but the scope of protection is not limited by this.
Primary raw material is described as follows:
Alkaline residue: refer to that the waste residue discharged in ammonium alkaline process alkali producing process, composition mainly include calcium carbonate, calcium sulfate, calcium chloride Equal calcium salts are the waste residue of main component, also containing compositions such as a small amount of sulfur dioxide.Alkaline residue solution meta-alkalescence, pH value is on 10 left sides The right side can be used for improveing acid and subacidity soil, also act as adsorbent, the architecture engineering materials such as cement.
Potassium sulfate: being colourless under usual condition or white crystals, particle or powder.Odorlessness, bitter, during aqueous solution is in Property.It is to be reacted at high temperature with 98% sulfuric acid and potassium chloride, through inspissation, crystallisation by cooling is centrifugated, made from drying.It is main Purposes is wanted to have haemocyanin biochemical investigation, kjeldahl determination catalyst, prepare other sylvite, chemical fertilizer, dyestuff, fragrance, drug, system Standby glass, alum etc..
Potassiumiodate: for colourless or white crystalline powder, odorlessness.Prepare Potassiumiodate standard solution.For analyze zinc, iodine, Arsenic.It is used as oxidant in volumetric method analysis.For making precipitating reagent in chemical analysis;Agriculturally make feed addictive;Pharmaceutically make The iodizing compound or medicament for preventing and treating local goitre disease, it can also be used to organic synthesis.
Marl: referring to the transitional type sedimentary rock between clay rock and carbonate rock, micro- by clay and carbonate Grain composition is in microgranular or pureed structure.Be often referred to be mixed by flour sand and mud grade carbonate with clay mineral a kind of pine formed, Soft, frangible newer sedimentary rock.The normal residuum containing autochthonous fossil and microfossil of widely distributed marine facies marl. It industrially can be used as cement raw material and building stone.
Polybutene: being to be used for isobutene for colourless or pale yellow viscous liquid made of a small amount of n-butene copolymerization of advocating peace The intermediate of oil dope, oil dope;Lubricating oil, bonding agent, plasticizer raw material;It itself can also be directly used as lubricating Impregnation oils, compressor oil in agent, high-tension cable;Due to odorless, nontoxic, it can be used for contacting the processing of paper with food;Also it uses Make the base starting material of chewing gum.
Ammonium sulfate: for colourless crystallization or white particle, odorlessness.It is mainly used as fertilizer, is suitable for various soil and crop. It can also be used in weaving, leather, medicine etc..Being added in electroplate liquid can increase electric conductivity.It is also the catalyst of food dark reddish brown, it is fresh The nitrogen source of culture yeasts bacterium in yeast production, acid dyeing dyeing auxiliaries, leather deliming agent.In addition, it is also used to brewing, Chemical reagent and storage battery production etc..
Ammonium phosphate: being sometimes particle for clear crystal or pale powder, soluble easily in water.It is that a kind of high concentration N-P is multiple Hefei material, can be used as the germinator of sugarcane production.Also serve as wood fire retardant, the water softener of water process, biological culture agent, analysis Chemical reagent.It is widely used in expanding fire-proof paint, polyethylene, polypropylene, polyurethane, epoxy resin, rubber product, fiber Plate and dry powder fire extinguishing agent etc. are a kind of using safe efficient phosphorus system halogen-free smoke resistance flame resistance agent.Apply also for other resins, gluing Agent and coating.
Silicon nitride: for grey, white or grayish white powdery crystal.For manufacturing bearing, blade of gas turbine, mechanical seal The mechanical components such as ring, permanent mold, the high grade refractory of the component of high temperature engineering, metallurgical industry etc.,
Glass fibre: be using glass marble or post-consumer glass being raw material through techniques systems such as high temperature melting, wire drawing, doff, woven fabrics Caused by, the diameter of monofilament is several microns to twenties meters microns, and every bundle fiber precursor is all even thousands of by hundreds of Root monofilament composition.Main component is silica, aluminium oxide, calcium oxide, boron oxide, magnesia, sodium oxide molybdena etc., good insulating, Heat resistance is strong, corrosion resistance is good, high mechanical strength, the reinforcing material being typically used as in composite material, electrically insulating material and insulation Thermal insulation material, the national economy every field such as circuit substrate.
Graphite powder: being aquadag powder used in the present invention, with high temperature resistant, high-intensitive property.In metallurgical industry In be mainly used to manufacture graphite crucible, graphite is commonly used in steel-making and makees the protective agent of steel ingot, the liner of metallurgical furnace is used as plumbic acid and stores Battery pole plates, ni-mh, nickel-cadmium cell, light sensation battery, electrical carbon brush, rubber, filler for plastic, are prevented lithium battery positive and negative anodes conductive agent Electrostatic, electromagnetic shielding, anticorrosive paint etc..
Flyash: being the fine ash that catching is got off from the flue gas after coal combustion, is that the primary solids of coal-burning power plant's discharge are useless Object.Oxide composition are as follows: SiO2、Al2O3And a small amount of FeO, Fe2O3、CaO、MgO、SO3、TiO2Deng.Wherein SiO2And Al2O3Contain Amount can account for 60% of total content or more.
1 composite high-performance dry powder fire extinguishing agent of embodiment, takes following raw materials to be prepared (every part takes 23kg): 22 parts of alkaline residue, 23 parts of potassium sulfate, 28 parts of Potassiumiodate, 14 parts of marl, 9 parts of polybutene, 38 parts of ammonium sulfate, 32 parts of ammonium phosphate, 12 parts of silicon nitride, 6 parts of glass fibre, 8 parts of graphite powder, 15 parts of flyash.
Composite high-performance dry powder fire extinguishing agent preparation method, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 30 meshes, be placed in airslide disintegrating mill, crushed Time is 25 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 35 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, and (dosage is ammonium sulfate and ammonium phosphate quality 25%) it, is uniformly mixed, stands 3 hours, crushed by micronizer, so that the grain of smashed ammonium sulfate and ammonium phosphate It is 0.0-4.9% in 0.12mm standard screen that degree distribution, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm standard screen In be 10-20%;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 2 hours at 79 DEG C, poly- fourth is added Alkene is mixed 5 minutes at 55 DEG C, is cooled to room temperature;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 20 minutes, is heated to 55 DEG C, is added step (1) gains, and isothermal holding 2 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, is warming up to 68 DEG C and isothermal holding 40 divides Clock is added silicone emulsion 3 times of flyash quality (dosage be), and the silication time is 80 minutes, and graphite powder is added, and is uniformly mixed;
(3) it dries
(6) step (5) products therefrom is placed in dryer, (drying temperature is 140 DEG C, drying time is 100 points for drying Clock);
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
2 composite high-performance dry powder fire extinguishing agent of embodiment, takes following raw materials to be prepared (every part takes 14kg): 28 parts of alkaline residue, 29 parts of potassium sulfate, 36 parts of Potassiumiodate, 19 parts of marl, 15 parts of polybutene, 45 parts of ammonium sulfate, 39 parts of ammonium phosphate, 16 parts of silicon nitride, 10 parts of glass fibre, 12 parts of graphite powder, 22 parts of flyash.
Composite high-performance dry powder fire extinguishing agent preparation method, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 40 meshes, be placed in airslide disintegrating mill, crushed Time is 25-35 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 45 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, and (dosage is ammonium sulfate and ammonium phosphate quality 35%) it, is uniformly mixed, stands 5 hours, crushed by micronizer, so that the grain of smashed ammonium sulfate and ammonium phosphate It is 0.0-4.9% in 0.12mm standard screen that degree distribution, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm standard screen In be 10-20%;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 4 hours at 94 DEG C, poly- fourth is added Alkene is mixed 8 minutes at 62 DEG C, is cooled to room temperature;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 30 minutes, is heated to 60 DEG C, is added step (1) gains, and isothermal holding 4 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, is warming up to 74 DEG C and isothermal holding 60 divides Clock is added silicone emulsion 5 times of flyash quality (dosage be), and the silication time is 100 minutes, and graphite powder is added, and is uniformly mixed;
(3) it dries
(6) step (5) products therefrom is placed in dryer, (drying temperature is 155 DEG C, drying time is 140 points for drying Clock);
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
3 composite high-performance dry powder fire extinguishing agent of embodiment, takes following raw materials to be prepared (every part takes 15kg): 24 parts of alkaline residue, 25 parts of potassium sulfate, 30 parts of Potassiumiodate, 16 parts of marl, 11 parts of polybutene, 40 parts of ammonium sulfate, 34 parts of ammonium phosphate, 13 parts of silicon nitride, 7 parts of glass fibre, 9 parts of graphite powder, 18 parts of flyash.
Composite high-performance dry powder fire extinguishing agent preparation method, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 33 meshes, be placed in airslide disintegrating mill, crushed Time is 28 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 38 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, and (dosage is ammonium sulfate and ammonium phosphate quality 28%) it, is uniformly mixed, stands 3.5 hours, crushed by micronizer, so that smashed ammonium sulfate and ammonium phosphate It is 0.0-4.9% in 0.12mm standard screen that size distribution, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm standard It is 10-20% in sieve;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 2.5 hours at 83 DEG C, is added poly- Butylene is mixed 6 minutes at 57 DEG C, is cooled to room temperature;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 23 minutes, is heated to 57 DEG C, is added step (1) gains, and isothermal holding 2-4 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, is warming up to 70 DEG C and isothermal holding 45 divides Clock is added silicone emulsion 3.5 times of flyash quality (dosage be), and the silication time is 85 minutes, and graphite powder is added, and mixing is equal It is even;
(3) it dries
(6) step (5) products therefrom is placed in dryer, (preferably drying temperature is 145 DEG C, drying time is for drying 110 minutes);
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
4 composite high-performance dry powder fire extinguishing agent of embodiment, takes following raw materials to be prepared (every part takes 14kg): 26 parts of alkaline residue, 27 parts of potassium sulfate, 34 parts of Potassiumiodate, 18 parts of marl, 13 parts of polybutene, 43 parts of ammonium sulfate, 37 parts of ammonium phosphate, 15 parts of silicon nitride, 9 parts of glass fibre, 11 parts of graphite powder, 20 parts of flyash.
Composite high-performance dry powder fire extinguishing agent preparation method, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 38 meshes, be placed in airslide disintegrating mill, crushed Time is 32 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 42 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, and (dosage is ammonium sulfate and ammonium phosphate quality 32%) it, is uniformly mixed, stands 4.5 hours, crushed by micronizer, so that smashed ammonium sulfate and ammonium phosphate It is 0.0-4.9% in 0.12mm standard screen that size distribution, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm standard It is 10-20% in sieve;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 3.5 hours at 89 DEG C, is added poly- Butylene is mixed 7 minutes at 60 DEG C, is cooled to room temperature;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 27 minutes, is heated to 59 DEG C, is added step (1) gains, and isothermal holding 3.5 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, is warming up to 72 DEG C and isothermal holding 55 divides Clock is added silicone emulsion 4.5 times of flyash quality (dosage be), and the silication time is 95 minutes, and graphite powder is added, and mixing is equal It is even;
(3) it dries
(6) step (5) products therefrom is placed in dryer, (drying temperature is 151 DEG C, drying time is 130 points for drying Clock);
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
5 composite high-performance dry powder fire extinguishing agent of embodiment, takes following raw materials to be prepared (every part takes 20kg): 25 parts of alkaline residue, 26 parts of potassium sulfate, 33 parts of Potassiumiodate, 17 parts of marl, 12 parts of polybutene, 42 parts of ammonium sulfate, 36 parts of ammonium phosphate, 14 parts of silicon nitride, 8 parts of glass fibre, 10 parts of graphite powder, 19 parts of flyash.
Composite high-performance dry powder fire extinguishing agent preparation method, steps are as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 35 meshes, be placed in airslide disintegrating mill, crushed Time is 25-35 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 40 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, and (dosage is ammonium sulfate and ammonium phosphate quality 30%) it, is uniformly mixed, stands 4 hours, crushed by micronizer, so that the grain of smashed ammonium sulfate and ammonium phosphate It is 0.0-4.9% in 0.12mm standard screen that degree distribution, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm standard screen In be 10-20%;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 3 hours at 86 DEG C, poly- fourth is added Alkene is mixed 7 minutes at 58 DEG C, is cooled to room temperature;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, Stirring 25 minutes, is heated to 58 DEG C, is added step (1) gains, and isothermal holding 3 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, is warming up to 71 DEG C and isothermal holding 50 divides Clock is added silicone emulsion 4 times of flyash quality (dosage be), and the silication time is 90 minutes, and graphite powder is added, and is uniformly mixed;
(3) it dries
(6) step (5) products therefrom is placed in dryer, (drying temperature is 149 DEG C, drying time is 120 points for drying Clock);
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibration less than 40 microns Screen(ing) machine sieves smashed product, screens out the bulky grain of partial size >=100 micron, packaging.
Test example: the effect in order to verify composite high-performance dry powder fire extinguishing agent (embodiment 1-5) of the present invention, we have done pair Than test, respectively using embodiment 1-5 products obtained therefrom as experimental group;Control group (is purchased from Zhe Jiangding using other dry powder fire extinguishing agents Power security against fire Science and Technology Ltd.), extinguishing effect, hydroscopicity, electrical insulating property, lower temperature resistance, jetting performance etc. are measured respectively Performance indicator.
1, the measurement of extinguishing effect
The 10m of 2m*2m*2.5m is in the fire-extinguishing test space that fire fighting test uses3Opposite confined space, environment temperature are 10-30 DEG C, the condition divulged information and illuminated does not affect the free combustion of fuel.It is 31.64cm that tray for combustion, which is length and width, in experiment, Height is the rectangular food tray of 16cm, food tray floor space 0.1m2, bottom clear water is made rebasing, and food tray bottom is selected far from ground 22cm Fuel be ethyl alcohol, dosage 3L.A certain amount of water first is added in food tray bottom, the measured ethyl alcohol of graduated cylinder is poured into food tray, Then it lights a fire, enabling pre-burning 30s closes test space door, sprays into a certain amount of dry powder fire extinguishing agent, records attack time.Test The results are shown in Table 1.
1 extinguishing effect correlation data of table
As it can be seen from table 1 (pushing up power security against fire purchased from Zhejiang with other dry powder fire extinguishing agents in above-mentioned fire fighting test Science and Technology Ltd.) it compares, composite high-performance dry powder fire extinguishing agent of the present invention can be with less foamite amount when shorter Interior fire extinguishing.For example using the attack time of 5 gained composite high-performance dry powder fire extinguishing agent of the embodiment of the present invention, 88 g is 9.4s, and It is up to 13.6s using the attack time of 194g other dry powder fire extinguishing agents, so composite high-performance dry powder fire extinguishing agent of the present invention goes out Fiery performance is substantially better than the extinguishing property of other dry powder fire extinguishing agents, and fire-fighting efficiency is high.
2, the detection of hydroscopicity, electrical insulating property, lower temperature resistance, jetting performance etc.
By composite high-performance dry powder fire extinguishing agent of the present invention and other dry powder fire extinguishing agents (purchased from Zhejiang top power security against fire science and technology Co., Ltd) detection of hydroscopicity, electrical insulating property, lower temperature resistance, jetting performance etc. is carried out respectively.
The measurement of hydroscopicity: in the weighing bottle of constant weight, dry powder fire extinguishing agent 2g is weighed, 0.2mg is accurate to;By weighing bottle Exempt to be placed on temperature (21 ± 3) DEG C, relative humidity be 75%-80% constant-temperature constant-humidity environment in for 24 hours;Weighing bottle capping is taken out to be placed in In drier, is weighed 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 are gram (g);m2For ultra-fine dry powder extinguishing agent quality after moisture absorption, unit is gram (g).Take difference The average value of twice test result of the value no more than 0.05% is as measurement result.
The electrical insulating property of dry powder fire extinguishing agent is (big purchased from Ningbo Rui Ke using FT-401 dry powder fire extinguishing agent electrical insulating property tester Industry Instrument Ltd.) it is measured.
The measurement of lower temperature resistance: weighing dry powder fire extinguishing agent 20g, be accurate to 0.2g, be placed in the test tube of dried and clean, will try Pipe is put into -55 DEG C of environment 1 hour after jumping a queue, and takes out test tube, is kept it tilted until being inverted in 2s, is recorded its whole with stopwatch The time flowed down takes the average value of 3 test results.
The measurement of jetting performance: the dry powder fire extinguishing agent that quality is (2250*Db ± 10) g is packed into special-purpose ejecting device (wherein Db is the bulk density of dry powder extinguisher, g/ml), and carbon dioxide cartridge is attached on the device head of injector, then device head It is fixed on special-purpose ejecting device;Injector is fixed on falling test stand, with the frequency of 0.417Hz, from (25.0 ± 1.5) mm Height fall 250 times;By 8 hours in the drying box of injector placement (49 ± 2) DEG C;Injector is taken out, is started after punching press 5s Injection, until pressure disappears;Weigh remaining dry powder fire extinguishing agent quality in injector.Then X2=(m3-m4)/m3* 100%, wherein m3 For the quality for spraying dry powder fire extinguishing agent in preceding injector, unit is gram (g), m4For the matter of dry powder fire extinguishing agent in injector after injection Amount, unit are gram (g).Take the average value of 3 test results.
Concrete condition is as shown in table 2:
The comparison of table 2 hydroscopicity, electrical insulating property, lower temperature resistance, jetting performance
By table 2, it is apparent that either hydroscopicity, electrical insulating property, lower temperature resistance or jetting performance, the present invention Composite high-performance dry powder fire extinguishing agent is more excellent than other dry powder fire extinguishing agent performances, is worth of widely use, and has biggish application prospect.
Finally it should be noted that embodiment is the optimal specific embodiment of the present invention, it is not limited to this Invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, according to It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced It changes.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention Protection scope within.

Claims (9)

1. the preparation method of composite high-performance dry powder fire extinguishing agent, characterized in that take the raw material of following weight proportions to be prepared: alkali 22-28 parts of slag, 23-29 parts of potassium sulfate, 28-36 parts of Potassiumiodate, 14-19 parts of marl, 9-15 parts of polybutene, ammonium sulfate 38-45 Part, 32-39 parts of ammonium phosphate, 12-16 parts of silicon nitride, 6-10 parts of glass fibre, 8-12 parts of graphite powder, 15-22 parts of flyash;Step It is as follows:
(1) crushing of raw material
(1) marl and glass fibre are routinely crushed, is uniformly mixed, crossed 30-40 mesh, be placed in airslide disintegrating mill, crushed Time is 25-35 minutes, and alkaline residue and silicon nitride are continuously added when electric current is stablized, and is crushed 35-45 minutes;
(2) ammonium sulfate and ammonium phosphate are placed in container, silicone oil is added, the dosage of silicone oil is ammonium sulfate and ammonium phosphate quality 25%-35% is uniformly mixed, and is stood 3-5 hours, is crushed by micronizer, so that smashed ammonium sulfate and phosphoric acid It is 0.0-4.9% in 0.12mm standard screen that the size distribution of ammonium, which meets,;It is 10-20% in 0.06mm standard screen;In 0.04mm It is 10-20% in standard screen;It is 60-75% in chassis;
(2) mixing of material
(3) potassium sulfate and Potassiumiodate are uniformly mixed, are placed in nitrogen atmosphere, stirred 2.5-3.5 hours, add at 83-90 DEG C Enter polybutene, mixes 6-7 minutes, be cooled to room temperature at 57-60 DEG C;
(4) the smashed ammonium sulfate of step (2) and ammonium phosphate and step (3) products therefrom are sequentially placed into blender, are stirred It 20-30 minutes, is heated to 55-60 DEG C, is added step (1) gains, isothermal holding 2-4 hours;
(5) flyash is added in step (4) products therefrom, is uniformly mixed, be warming up to 70-72 DEG C and isothermal holding 45-55 Minute, silicone emulsion is added, the dosage of silicone emulsion is 3-5 times of flyash quality, and the silication time is 80-100 minutes, is added Graphite powder is uniformly mixed;
(3) it dries
(6) step (5) products therefrom is placed in dryer, is dried, drying temperature is 140-155 DEG C, drying time 100- 140 minutes;
(4) it sieves
(7) step (6) products therefrom is subjected to pulverization process, until 50% or more grain diameter passes through vibrating sieving machine less than 40 microns Smashed product is sieved, the bulky grain of partial size >=100 micron is screened out, is packed.
2. preparation method according to claim 1, characterized in that take the raw material of following weight proportions to be prepared: alkaline residue 24-26 parts, 25-27 parts of potassium sulfate, 30-34 parts of Potassiumiodate, 16-18 parts of marl, 11-13 parts of polybutene, ammonium sulfate 40-43 Part, 34-37 parts of ammonium phosphate, 13-15 parts of silicon nitride, 7-9 parts of glass fibre, 9-11 parts of graphite powder, 18-20 parts of flyash.
3. preparation method according to claim 1, characterized in that take the raw material of following weight proportions to be prepared: alkaline residue 25 parts, 26 parts of potassium sulfate, 33 parts of Potassiumiodate, 17 parts of marl, 12 parts of polybutene, 42 parts of ammonium sulfate, 36 parts of ammonium phosphate, silicon nitride 14 parts, 8 parts of glass fibre, 10 parts of graphite powder, 19 parts of flyash.
4. preparation method according to claim 1, it is characterized in that: the dosage of step (2) silicone oil is ammonium sulfate and ammonium phosphate The 30% of quality.
5. preparation method according to claim 1, it is characterized in that: step (3) stirs 3 hours at 86 DEG C.
6. preparation method according to claim 1, it is characterized in that: step (3) mixes 7 minutes at 58 DEG C.
7. preparation method according to claim 1, it is characterized in that: step (5) is warming up to 71 DEG C and isothermal holding 50 minutes.
8. preparation method according to claim 1, it is characterized in that: the dosage of step (5) silicone emulsion is flyash quality 4 times.
9. preparation method according to claim 1, it is characterized in that: step (6) drying temperature is 149 DEG C, drying time is 120 minutes.
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CN110270426A (en) * 2019-06-26 2019-09-24 厦门一泰消防科技开发有限公司 Extinguishing chemical and preparation method thereof based on nanometer pulverization technology
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

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