CN100469404C - Additive for water-mist fire suppression system - Google Patents

Additive for water-mist fire suppression system Download PDF

Info

Publication number
CN100469404C
CN100469404C CNB2003101127938A CN200310112793A CN100469404C CN 100469404 C CN100469404 C CN 100469404C CN B2003101127938 A CNB2003101127938 A CN B2003101127938A CN 200310112793 A CN200310112793 A CN 200310112793A CN 100469404 C CN100469404 C CN 100469404C
Authority
CN
China
Prior art keywords
additive
fire
fighting
mist fire
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2003101127938A
Other languages
Chinese (zh)
Other versions
CN1634622A (en
Inventor
廖光煊
周晓猛
秦俊
刘江虹
王喜世
范维澄
陆强
厉培德
蔡波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Science and Technology of China USTC
Original Assignee
University of Science and Technology of China USTC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Science and Technology of China USTC filed Critical University of Science and Technology of China USTC
Priority to CNB2003101127938A priority Critical patent/CN100469404C/en
Publication of CN1634622A publication Critical patent/CN1634622A/en
Application granted granted Critical
Publication of CN100469404C publication Critical patent/CN100469404C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Fire-Extinguishing Compositions (AREA)

Abstract

The invention relates to a water mist fire extinguishing addictive. It characterizes in that 3.0%-6.0%(by weight) fluorine surfactant, 67.45%-80.25%(by weight) water, 0.25%-0.5%(by weight) triethanal amine ,4.0%-6.5%(by weight) urea, 1.0%-1.5%(by weight) sodium lactate, 1.5%-3.0%(by weight) alkylphenol polyoxyethylene are added to 10.0% to 15.0%(by weight) N-N-dimethylformamide, then PH of which be regulated between 7.5 to 8.5 by acetic acid or sodium hydroxide after it dissolved completely. Filtering the solution to get the concentrated solution of the water mist fire extinguishing addictive of the present invention. Water should be added to dilute the solution to lower the fluorine surfactant content down to 0.2% to 0.8% in use.

Description

A kind of additive that is used for fine mist fire-fighting
Technical field:
The invention belongs to the Water Mist Fire Extinguishing Technique field, be specifically related to the composition and the preparation method of thin water smoke additive.
Background technology:
(TECHNICALSUPPORT FOR THE STUDY OF DROPLET INTERACTIONS WITH HOTSURFACES, 2000.6.12 sees in American Architecture fire test chamber " the interaction technical research report of thin water smoke droplet and burning surface " Http:// www.bfrl.nist.gov/866/NGP/publications/2B3 Final Report.pdf) in, according to the physicochemical properties of additive, roughly thin water smoke additive is divided into two classes:
The first kind is the inorganic salts additive, mainly contains following prescription (mass percent):
(1), 24% LiCl and 76% H 2O
(2)、5％?LiCl；26％?CaCl 2；69％?H 2O
(3)、10％?Ca(NO 3) 2；27％?CaCl 2；63％?H 2O
(4)、5％?FeCl 3，29％?CaCl 2，66％?H 2O
Though examples of such additives can effectively improve the fire-fighting efficiency of thin water smoke, but because the inorganic metal salt very easily ionization in the aqueous solution in the prescription, a large amount of ionized metal ions not only have higher requirement to the corrosion resistance of storage device, but also can cause severe impairment to the precision instrument of scene of fire and the equipment of metal material, so its range of application is very restricted.
Second class is for changing organic class additive of thin water smoke viscosity, and mainly by surfactant, opacifier and viscous regulator are formed, and mainly improves the extinguishing property of thin water smoke by the mobile performance of improving thin water smoke and the light-proofness that strengthens thin water smoke! Because examples of such additives does not have the inhibition effect, so improve few to the fire-fighting efficiency of thin water smoke; And the surfactant in the examples of such additives, opacifier and viscous regulator are the high-carbon chain hydrocarbon, the molecular structure complexity, and not only synthetic difficulty, and also cost is higher.
" detection and the research proceeding of putting out a fire to save life and property " (Proceedings of Fire Suppression and DetectionResearch Application Symposium, Orlando, FL., Feb.7-9,2001, pp.439-447) introduced of the influence of a kind of foam type additive to the fine mist fire-fighting effect.Examples of such additives can produce a large amount of foams in fire extinguishing procedure; utilize the thermal insulation and the oxygen barrier effect of foam not only can reach the purpose that improves fine mist fire-fighting efficient; but also the anti-resume combustion that can improve fuel oil; but after the fire extinguishing; the residual a large amount of foam of fire-extinguishing location meeting causes severe contamination to protected space.
In sum, existing thin water smoke additive is broadly divided into three classes: one is the inorganic salts additive, and its major defect is the corrosion to equipment; Two is organic class additive, and major defect is that price is higher and few to the fire-fighting efficiency raising of thin water smoke; Three is additive foam, and major defect is the pollution of foam to the scene of fire.
Summary of the invention:
The objective of the invention is to propose a kind of additive that is used for fine mist fire-fighting, to overcome the defective that burn into pollutes, fire-fighting efficiency is not high that prior art exists respectively.
The additive that is used for fine mist fire-fighting of the present invention is characterised in that its compositing formula is:
Figure C200310112793D00041
Fluorine surfactant wherein is selected from a kind of in following four kinds of surfactants:
①C 8F 17SO 2F；
②F[CF(CF 3)CF 2O] 2CF(CF 3)CONH(CH 2) 3N(C 2H 5) 2CH 3I；
③F[CF(CF 3)CF 2O] 2CF(CF 3)COONa；
④C 8F 17SO 2NH—(CH 2) 3N(C 2H 5) 2。
The present invention is used for the addictive preparation method of fine mist fire-fighting, comprises mixing, stirring, dissolving, dilution, filters operation; Be characterised in that its configuration step is: the fluorine surfactant that accounts for solution gross mass 3.0～6.0%, the water that accounts for solution gross mass 67.5～80.2, the triethanolamine that accounts for solution gross mass 0.3～0.5%, 4.0～6.5% urea and 1.0～1.5% sodium lactate, 1.5～3.0% APES are joined in the N-N-dimethyl formamide that accounts for solution gross mass 10.0～15.0%, its pH value to 7.5～8.5 are regulated with acetic acid or NaOH in the dissolving back fully, and the solution after the filtration is fine spray extinguishment additive agent concentrated solution of the present invention.
When the additive of fine mist fire-fighting of the present invention is used for fire extinguishing and uses, earlier the content of above-mentioned fine spray extinguishment additive agent concentrated solution thin up fluorine surfactant extremely wherein being reduced to mass percentage concentration is in 0.2～0.8% the scope, then the solution after the dilution is joined in the water tank of fine water mist fire-extinguishing system, connect respective line; When fire takes place, open the nitrogen gas cylinder in the fine water mist fire-extinguishing system, under the effect of nitrogen pressure, the solution in the water tank sprays with spray pattern through shower nozzle as firing-fighting medium, with fire suppression.
Compare with existing fine spray extinguishment additive agent, the present invention has carried out integrating improvement to existing three kinds of additives composition, learns from other's strong points to offset one's weaknesses, and has invented the new formulation that has existing additive overwhelming majority advantages and overcome its defective substantially.Additive component of the present invention mainly comprises following four classes: the one, can effectively increase the material of thin water smoke inhibition effect, and this class material comprises the heat-sensitive substance of decomposes and can interrupt the chemical substance of combustion chain reaction; The 2nd, hc-surfactant mainly is the heat radiation effect that improves the oxygen barrier effect of thin water smoke and reduce flame; The 3rd, fluorine surfactant, main effect is the surface tension that reduces thin water smoke, improves atomizing effect; The 4th, solvent, effect is to make above-mentioned three class materials and water can form the liquid phase of homogeneous, can also improve the freezing tolerance of thin water smoke simultaneously.Owing to contain metal ion in first kind of material, therefore have the advantage that the inorganic salts additive can effectively improve fine mist fire-fighting efficient, because this type of material is an organic salt, in the aqueous solution, be not easy ionization again, so comparing with inorganic salts greatly, corrosivity reduces; Fluorine surfactant in hc-surfactant in the second class material and the 3rd class material, can be so that thin water smoke can form the water membrane starvation and reduce heat radiation at burning surface, this has just inherited the strong fire-fighting characteristic of anti-resume combustion ability of additive foam, and since the bubble amt that this two classes material produces seldom, so can significantly alleviate the pollution of additive foam to fire-extinguishing location; Simultaneously, the 3rd class material can also effectively improve the surface tension of fine mist fire-fighting medium, and then improves the flow behavior of thin water smoke; The 4th class material can reduce the fusing point of fine mist fire-fighting medium, and this is significant to the temperature accommodation that improves thin water smoke.
Fine spray extinguishment additive agent of the present invention mainly utilizes surfactant to form the purpose that moisture film is realized oxygen barrier and thermal insulation at fuel surface, and the basic non-foam of fire extinguishing procedure generates, so pollution-free to fire-extinguishing location!
In the fine spray extinguishment additive agent of the present invention owing to contain organic metal salt, surfactant and heat-sensitive substance, the inhibition mechanism efficiently that not only has metal ion, and the surfactant in the prescription and heat-sensitive substance also have great booster action to the cooling of the gas phase of thin water smoke, four kinds of physics extinguishing mechanisms of concentration of intercepting flame thermal radiation, starvation and reduction fuel gas and air mixture! The coupling of two kinds of extinguishing mechanisms of physical chemistry makes additive fire-fighting efficiency of the present invention not only be higher than organic class additive, but also is much better than the inorganic metal salt additives!
Fine spray extinguishment additive agent of the present invention can effectively improve the extinguishing ability of thin water smoke; And can effectively stop the resume combustion of fuel; Additive of the present invention does not have corrosion substantially to equipment and instrument; Pollution-free substantially to fire-extinguishing location; And because each constituent of additive of the present invention is nontoxic or low toxicity, and raw material is easy to get, so to the basic nonhazardous of human body, low production cost.
Compare with existing preparation method, because the preparation method of thin water smoke additive of the present invention is a kind of physical mixing processes between each component, and operating condition all is a normal temperature and pressure, again because each constitutive property is stable, equipment there is not corrosion, so the preparation method does not require each side such as the corrosivity of equipment, sealing, heat resisting and pressure resistings; And preparation process is simple to operate, with low cost, not only can adopt manually-operated, and realizes that automation control also is very easy to.
The specific embodiment:
Embodiment 1:
Thin water smoke additive in the present embodiment adopts the prescription listed as following table:
Figure C200310112793D00051
The operating procedure of preparation is:
1, is the C of solution gross mass 6.0% to quality 8F 17SO 2F is slowly joining in N-N-dimethyl formamide that quality is a solution gross mass 15.0% under the stirring condition, stirs until dissolving fully;
2, treat C 8F 17SO 2After F dissolved fully, adding quality was the water dilution of solution gross mass 67.5%;
3, under slowly stirring, add the triethanolamine that quality is a solution gross mass 0.5% successively, urea and the quality that quality is solution gross mass 6.5% is the sodium lactate of solution gross mass 1.5%;
4, treat that said components is dissolved fully after, adding quality is the APES of solution gross mass 3.0%, stirs until dissolving fully, forms settled solution.
5, regulate its pH value to 7.5 with acetic acid or NaOH; The solution that filters the back gained is fine spray extinguishment additive agent concentrated solution of the present invention.
The product of present embodiment gained can produce micro-foam when stirring; Leave standstill preservation and can not produce precipitation; Stable in properties, normal temperature and pressure do not have volatilization down, free from extraneous odour, and long term storage undergoes no deterioration.
Used hereinafter C 8F 17SO 2F% is meant C 8F 17SO 2F is thin up in above-mentioned concentrated solution, C 8F 17SO 2F is shared mass percent in water and concentrated solution gross mass.
The surface tension of fine mist fire-fighting medium under the different thin water smoke additive additions:
Utilize surface tension instrument that the surface tension of fine mist fire-fighting medium under the different additions of present embodiment additive is measured, mensuration the results are shown in following table:
Additive level and fine mist fire-fighting dielectric surface length tension relation
Figure C200310112793D00061
C can be described from the surface tension test result 8F 17SO 2F can effectively reduce the surface tension of thin water smoke, therefore can improve the atomizing effect and the mobile performance of improving the fine mist fire-fighting medium of thin water smoke; APES and C 8F 17SO 2The acting in conjunction of F can be so that thin water smoke forms water membrane between the burning surface of fuel and flame, starvation and reduce heat radiation; Urea at high temperature decomposes, and this process not only can absorb heat and reduce flame temperature, but also the inert gas that can decompose generation reduces oxygen concentration in the air; N-N-dimethyl formamide can dissolve above-mentioned each component as solvent, can reduce the fusing point of thin water smoke as antifreeze; The sodium ion that sodium lactate produces in fire extinguishing procedure can absorb H, the OH free radical that combustion process produces, and interrupts combustion chain reaction; By the acting in conjunction of above each component, additive of the present invention can effectively improve the fire-fighting efficiency of thin water smoke.
The fire extinguishing measure of merit of thin water smoke additive:
Additive is joined in the pure water, make C wherein 8F 17SO 2F% is diluted to 0.2～0.8%, stirs a little, then this solution is injected into the fine water mist fire-extinguishing system water tank; Start fine water mist fire-extinguishing system, put out the fire in the protected space, measure and put out the parameter of required time of target fire as fire-fighting efficiency.
By to alcohol fire, kerosene fire and grillage fire fire-extinguishing test, illustrate that the product in the present embodiment can be used as the additive of fine mist fire-fighting.
Following each tabular has gone out the relation of thin water smoke additive level of the present invention and fine mist fire-fighting dielectric surface tension force and attack time.
Additive addition and attack time relation (kerosene fire)
Figure C200310112793D00071
Additive addition and attack time relation (alcohol fire)
Figure C200310112793D00072
Additive addition and attack time relation (grillage fire)
Figure C200310112793D00073
Above-listed test data proves, for the oil sump fire, works as C 8F 17SO 2F% is 0.2% o'clock, and fine mist fire-fighting is most effective, compares with conventional thin water smoke, can improve the extinguishing ability of thin water smoke more than three times; To the grillage fire, when additive level was 0.8%, the fine mist fire-fighting ability was the highest, compared with conventional thin water smoke, and attack time has approximately shortened 5 times.
The corrosivity monitor of thin water smoke additive:
Carry out additive copper sheet corrosion test according to GB/T5096-1985, testing result is listed in the table below:
The copper strip test result
Figure C200310112793D00074
Above-listed testing result illustrates that thin water smoke additive of the present invention does not have corrosion to equipment.
The thin water smoke additive that this invention design can be described by above-mentioned surface tension test, fire-extinguishing test, corrosivity monitor has not only solved the not high deficiency of organic additive fire-fighting efficiency, also overcome the strong defective of inorganic additives corrosivity, by observation to fire-extinguishing location, it can also be seen that examples of such additives fire extinguishing back produces foam seldom, pollution-free substantially to fire-extinguishing location.

Claims (4)

1, a kind of additive that is used for fine mist fire-fighting is characterised in that the quality percentage composition of each composition in its compositing formula is:
Fluorine surfactant 3.0～6.0,
APES 1.5～3.0,
Urea 4.0～6.5,
Triethanolamine 0.3～0.5,
N, N-dimethyl formamide 10.0～15.0,
Sodium lactate 1.0～1.5,
Water 67.5～80.2.
2, the additive that is used for fine mist fire-fighting as claimed in claim 1 is characterised in that fluorine surfactant wherein is selected from a kind of of following five kinds of surfactants:
①C 8F 17SO 2F；
②F[CF(CF 3)CF 2O] 2CF(CF 3)CONH(CH 2) 3N(C 2H 5) 2CH 3I；
③F[CF(CF 3)CF 2O] 2CF(CF 3)COONa；
④C 8F 17SO 2NH—(CH 2) 3N(C 2H 5) 2。
3, a kind of preparation method who is used for the additive of fine mist fire-fighting comprises mixing, stirring, dissolving, dilution, filters operation; Be characterised in that its configuration step is: the fluorine surfactant that accounts for solution gross mass 3.0～6.0%, the water that accounts for solution gross mass 67.5～80.2%, the triethanolamine that accounts for solution gross mass 0.3～0.5%, 4.0～6.5% urea and 1.0～1.5% sodium lactate, 1.5～3.0% APES are joined in the N-N-dimethyl formamide that accounts for solution gross mass 10.0～15.0%, its pH value to 7.5～8.5 are regulated with acetic acid or NaOH in the dissolving back fully, and the solution after the filtration is fine spray extinguishment additive agent concentrated solution of the present invention.
4, the preparation method who is used for the additive of fine mist fire-fighting as claimed in claim 3 is characterised in that be 0.2～0.8% mass percentage concentration with its concentrated solution with the fluorine surfactant that water is diluted to wherein.
CNB2003101127938A 2003-12-26 2003-12-26 Additive for water-mist fire suppression system Expired - Fee Related CN100469404C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2003101127938A CN100469404C (en) 2003-12-26 2003-12-26 Additive for water-mist fire suppression system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2003101127938A CN100469404C (en) 2003-12-26 2003-12-26 Additive for water-mist fire suppression system

Publications (2)

Publication Number Publication Date
CN1634622A CN1634622A (en) 2005-07-06
CN100469404C true CN100469404C (en) 2009-03-18

Family

ID=34843337

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2003101127938A Expired - Fee Related CN100469404C (en) 2003-12-26 2003-12-26 Additive for water-mist fire suppression system

Country Status (1)

Country Link
CN (1) CN100469404C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101020108B (en) * 2007-03-13 2010-12-08 江阴市核圆纳米科技有限公司 Fire-extinguishing multicomponent fine water fog additive and its prepn
CN102029040A (en) * 2010-11-29 2011-04-27 北京航空航天大学 Complex additive used for extinguishment with water mist
CN102657924B (en) * 2012-04-12 2014-10-01 中国科学技术大学苏州研究院 Novel water mist additive and its preparation method
CN107158606A (en) * 2017-07-19 2017-09-15 公安部天津消防研究所 A kind of diesel locomotive medium lift pump group formula water mists self-extinguishing method and system
CN109568870A (en) * 2019-01-03 2019-04-05 中国民航大学 It can inhibit the water mists compound additive and preparation method of lithium ion battery thermal runaway

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1641369A1 (en) * 1988-09-26 1991-04-15 Всесоюзный научно-исследовательский институт противопожарной обороны Composition for fire-extinguishing
US5391721A (en) * 1993-02-04 1995-02-21 Wormald U.S., Inc. Aqueous film forming foam concentrates for hydrophilic combustible liquids and method for modifying viscosity of same
CN1188678A (en) * 1997-01-23 1998-07-29 株式会社Acp Water sytsem extinguishant
WO1999024120A1 (en) * 1997-11-12 1999-05-20 Kidde-Graviner Limited Fire or explosion suppressants and methods
US6051154A (en) * 1996-02-08 2000-04-18 Orion Safety Industries Pty Limited Fire fighting foams utilizing saponins
WO2000041770A1 (en) * 1999-01-12 2000-07-20 Chubb Fire Limited Fire extinguishant
CN1127992C (en) * 2000-07-04 2003-11-19 杨盛发 Fire-extinguishing chemical

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1641369A1 (en) * 1988-09-26 1991-04-15 Всесоюзный научно-исследовательский институт противопожарной обороны Composition for fire-extinguishing
US5391721A (en) * 1993-02-04 1995-02-21 Wormald U.S., Inc. Aqueous film forming foam concentrates for hydrophilic combustible liquids and method for modifying viscosity of same
US6051154A (en) * 1996-02-08 2000-04-18 Orion Safety Industries Pty Limited Fire fighting foams utilizing saponins
CN1188678A (en) * 1997-01-23 1998-07-29 株式会社Acp Water sytsem extinguishant
WO1999024120A1 (en) * 1997-11-12 1999-05-20 Kidde-Graviner Limited Fire or explosion suppressants and methods
WO2000041770A1 (en) * 1999-01-12 2000-07-20 Chubb Fire Limited Fire extinguishant
CN1127992C (en) * 2000-07-04 2003-11-19 杨盛发 Fire-extinguishing chemical

Also Published As

Publication number Publication date
CN1634622A (en) 2005-07-06

Similar Documents

Publication Publication Date Title
CN101134130B (en) Multi-functional foam extinguishing agent and method for preparing the same
CN102029040A (en) Complex additive used for extinguishment with water mist
CN108245819B (en) Water-based fire extinguishing agent
CN102083500A (en) Fire extinguishing composition
CN102614618A (en) Fire-extinguishing agent capable of extinguishing instantly and retarding flame efficiently
WO2003043526A1 (en) Fluorosurfactant-free foam fire-extinguisher
CN111840879B (en) Non-conductive superfine water mist fire extinguishing agent for inhibiting lithium ion battery fire and preparation method thereof
CN107412997B (en) Water-based fire extinguishing agent stock solution and fire extinguishing agent suitable for being used at-1-55 ℃ and preparation method thereof
CN110433445B (en) Low-temperature water-based extinguishing agent and preparation method thereof
CN100469404C (en) Additive for water-mist fire suppression system
CN112494879B (en) High-efficiency aqueous film-forming foam extinguishing agent
CN111450463B (en) Water-based extinguishing agent and preparation method thereof
CN109568870A (en) It can inhibit the water mists compound additive and preparation method of lithium ion battery thermal runaway
CN108837366A (en) A kind of preparation method of non-fusibility aqueous film-forming foam extinguishing agent
Wu et al. Experimental study on fire extinguishing of water mist with a newly prepared multi-component additive
CN107376181B (en) Water-based fire extinguishing agent applicable to-20-55 ℃ and preparation method thereof
CN107376180B (en) Cold-resistant water-based fire extinguishing agent suitable for-40-55 ℃ and preparation method thereof
CN106880920A (en) The special extinguishing chemical of petrochemical industry class fire
CN101020108B (en) Fire-extinguishing multicomponent fine water fog additive and its prepn
US5061383A (en) Emulsifying film foam
CN102657924B (en) Novel water mist additive and its preparation method
CN111617428A (en) Chlorine-free aqueous film-forming foam extinguishing agent and preparation method thereof
CN101214411A (en) Water solution containing fine spray extinguishment additive agent and preparation and application
CN106492393B (en) Fire extinguishing agent, preparation method and application thereof
CN108837362A (en) Water-based extinguishing agent suitable for transformer oil fire

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090318

Termination date: 20101226