CN109847237B - Halohydrocarbon gas fire extinguishing system with safety additive - Google Patents
Halohydrocarbon gas fire extinguishing system with safety additive Download PDFInfo
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- CN109847237B CN109847237B CN201811550750.0A CN201811550750A CN109847237B CN 109847237 B CN109847237 B CN 109847237B CN 201811550750 A CN201811550750 A CN 201811550750A CN 109847237 B CN109847237 B CN 109847237B
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- bromo
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- safety additive
- tetrafluoropropene
- halogenated hydrocarbon
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- 239000000654 additive Substances 0.000 title claims abstract description 72
- 230000000996 additive effect Effects 0.000 title claims abstract description 64
- 150000005826 halohydrocarbons Chemical class 0.000 title description 5
- 150000008282 halocarbons Chemical class 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 5
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 27
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 16
- 230000001629 suppression Effects 0.000 claims description 10
- VSZURNDHYWQPTO-UHFFFAOYSA-N 2-bromo-1,1,3,3,3-pentafluoroprop-1-ene Chemical compound FC(F)=C(Br)C(F)(F)F VSZURNDHYWQPTO-UHFFFAOYSA-N 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 8
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 claims description 8
- RRUCZSCEAWFDBM-UPHRSURJSA-N (z)-1-bromo-2,3,3,3-tetrafluoroprop-1-ene Chemical compound Br\C=C(/F)C(F)(F)F RRUCZSCEAWFDBM-UPHRSURJSA-N 0.000 claims description 7
- CTQYYDTVSHIYFS-UHFFFAOYSA-N 2-bromo-1,1,3,3-tetrafluoroprop-1-ene Chemical compound FC(F)C(Br)=C(F)F CTQYYDTVSHIYFS-UHFFFAOYSA-N 0.000 claims description 6
- SPZXNEBFTNEDGH-UHFFFAOYSA-N 3-bromo-1,1,2,3,3-pentafluoroprop-1-ene Chemical compound FC(F)=C(F)C(F)(F)Br SPZXNEBFTNEDGH-UHFFFAOYSA-N 0.000 claims description 6
- FRVWTAHTVVUDFK-UHFFFAOYSA-N 3-bromo-1,1,3,3-tetrafluoroprop-1-ene Chemical compound FC(F)=CC(F)(F)Br FRVWTAHTVVUDFK-UHFFFAOYSA-N 0.000 claims description 6
- LNSBXPNZJPZBQZ-UPHRSURJSA-N (e)-1-bromo-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound F\C(Br)=C(/F)C(F)(F)F LNSBXPNZJPZBQZ-UPHRSURJSA-N 0.000 claims description 5
- GJAJMLHFWTWPES-UPHRSURJSA-N (z)-2-bromo-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C(/Br)C(F)(F)F GJAJMLHFWTWPES-UPHRSURJSA-N 0.000 claims description 5
- XTGYEAXBNRVNQU-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-iodopropane Chemical compound FC(F)(F)C(F)(F)C(F)(F)I XTGYEAXBNRVNQU-UHFFFAOYSA-N 0.000 claims description 5
- BIAZUROWJGLBEP-UHFFFAOYSA-N 2-bromo-1,1,2-trifluoro-1-(trifluoromethoxy)ethane Chemical compound FC(F)(F)OC(C(F)Br)(F)F BIAZUROWJGLBEP-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- YQPBMUIOKYTYDS-OWOJBTEDSA-N (z)-1-bromo-1,2-difluoroethene Chemical group F\C=C(\F)Br YQPBMUIOKYTYDS-OWOJBTEDSA-N 0.000 claims description 4
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 claims description 4
- INSWYXFUUDTSPB-UHFFFAOYSA-N 1-bromo-1,2,3,3-tetrafluoroprop-1-ene Chemical compound BrC(=C(C(F)F)F)F INSWYXFUUDTSPB-UHFFFAOYSA-N 0.000 claims description 4
- FVPSNVVHINDDKH-UHFFFAOYSA-N 1-bromo-1,3,3,3-tetrafluoroprop-1-ene Chemical compound FC(Br)=CC(F)(F)F FVPSNVVHINDDKH-UHFFFAOYSA-N 0.000 claims description 4
- XRZHWZVROHBBAM-UHFFFAOYSA-N 1-bromo-3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C=CBr XRZHWZVROHBBAM-UHFFFAOYSA-N 0.000 claims description 4
- UUPRQHVFUDNODS-UHFFFAOYSA-N 3-bromo-1,1,2,3-tetrafluoroprop-1-ene Chemical compound FC(Br)C(F)=C(F)F UUPRQHVFUDNODS-UHFFFAOYSA-N 0.000 claims description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 4
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 4
- YSLFMGDEEXOKHF-UHFFFAOYSA-N difluoro(iodo)methane Chemical compound FC(F)I YSLFMGDEEXOKHF-UHFFFAOYSA-N 0.000 claims description 4
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 claims description 4
- XGVXNTVBGYLJIR-UHFFFAOYSA-N fluoroiodomethane Chemical compound FCI XGVXNTVBGYLJIR-UHFFFAOYSA-N 0.000 claims description 3
- AWOMFEUKFYXKCV-UHFFFAOYSA-N 1-bromo-1,2,2-trifluoro-1-(trifluoromethoxy)ethane Chemical compound FC(F)C(F)(Br)OC(F)(F)F AWOMFEUKFYXKCV-UHFFFAOYSA-N 0.000 claims description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 claims description 2
- 229910000020 calcium bicarbonate Inorganic materials 0.000 claims description 2
- HQRPHMAXFVUBJX-UHFFFAOYSA-M lithium;hydrogen carbonate Chemical compound [Li+].OC([O-])=O HQRPHMAXFVUBJX-UHFFFAOYSA-M 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims 2
- 150000007514 bases Chemical class 0.000 claims 2
- 239000007789 gas Substances 0.000 abstract description 25
- 239000002341 toxic gas Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 230000002378 acidificating effect Effects 0.000 abstract description 5
- 229910001413 alkali metal ion Inorganic materials 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 13
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 235000011181 potassium carbonates Nutrition 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- QOFGGNBBKFDFJX-UHFFFAOYSA-N bromomethoxy(trifluoro)methane Chemical compound [H]C([H])(Br)OC(F)(F)F QOFGGNBBKFDFJX-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- LNSBXPNZJPZBQZ-UHFFFAOYSA-N 1-bromo-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound FC(Br)=C(F)C(F)(F)F LNSBXPNZJPZBQZ-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QKBKGNDTLQFSEU-UHFFFAOYSA-N 2-bromo-3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C(Br)=C QKBKGNDTLQFSEU-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- JEUXZUSUYIHGNL-UHFFFAOYSA-N n,n-diethylethanamine;hydrate Chemical compound O.CCN(CC)CC JEUXZUSUYIHGNL-UHFFFAOYSA-N 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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Abstract
The invention relates to a fire extinguishing tool, and particularly discloses a halogenated hydrocarbon gas fire extinguishing system with a safety additive. The fire extinguishing system comprises a halogenated hydrocarbon fire extinguishing agent, a safety additive and a safety additive mixer capable of mixing the halogenated hydrocarbon fire extinguishing agent and the safety additive in proportion; wherein the safety additive is an aqueous solution of inorganic alkali metal alkalescent salt and/or organic alkalescent compound. The invention adopts the aqueous solution of inorganic alkali alkalescent salt and/or organic alkalescent compound as the safety additive, and realizes the high-efficiency absorption of the acidic toxic gas generated by the halogenated hydrocarbon fire extinguishing agent. Meanwhile, the inorganic alkali metal alkalescent salt contains alkali metal ions and can also absorb burning free radicals, so that the overall fire extinguishing effect of the fire extinguishing system is further improved. The fire-fighting protective device is suitable for being widely applied to electrical fire prevention and control of transformers, cable tunnels, valve halls, distribution rooms and the like.
Description
Technical Field
The present invention relates to fire extinguishing tools, and in particular to a halogenated hydrocarbon gas fire extinguishing system with safety additives.
Background
The halohydrocarbon gas extinguishing agent is a high-efficiency gas extinguishing agent, and has the advantages of high extinguishing efficiency, strong insulating capability, charged extinguishment, no residue after extinguishment, small influence on the atmospheric ozone layer and the like. However, the halogenated hydrocarbon gas fire extinguishing agent can be decomposed to generate acidic toxic gas such as hydrogen fluoride and the like in the fire extinguishing process, and has great harm to human bodies. Therefore, there is a need to develop a safe halohydrocarbon gas fire extinguishing system to provide a guarantee for the safety of personnel in the fire extinguishing environment.
Disclosure of Invention
In order to solve the problems of the prior art, it is an object of the present invention to provide a halogenated hydrocarbon gas fire extinguishing system with a safety additive.
In order to realize the purpose of the invention, the technical scheme of the invention is as follows:
the invention provides a halogenated hydrocarbon gas fire extinguishing system with a safety additive, which comprises a halogenated hydrocarbon fire extinguishing agent and the safety additive, and a safety additive mixer capable of mixing the halogenated hydrocarbon fire extinguishing agent and the safety additive in proportion.
Wherein the safety additive is an aqueous solution of inorganic alkali metal alkalescent salt and/or organic alkalescent compound.
Further, the total concentration of the inorganic alkali metal weak base salt and/or the organic weak base compound in the aqueous solution is 1 to 10 percent, preferably 2 to 6 percent.
Preferably, the safety additive is an aqueous solution of one or more of sodium bicarbonate, sodium carbonate, potassium bicarbonate, potassium carbonate, lithium bicarbonate, calcium bicarbonate, sodium acetate, ammonia, dimethylamine, triethylamine, and aniline.
More preferably, the safety additive is a combination of sodium carbonate and triethylamine, and the concentrations of the safety additive are respectively 2% and 0.1%; or a combination of potassium carbonate and ammonia, at concentrations of 2% and 0.05%, respectively.
Further, in the halogenated hydrocarbon gas fire extinguishing system according to the present invention, the halogenated hydrocarbon fire extinguishing agent is a halogenated hydrocarbon fire extinguishing agent commonly used in the art, and may be, for example, 1-bromo-1, 2-difluoroethylene, 1-bromo-3, 3, 3-trifluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-3, 3, 3-tetrafluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-pentafluoropropene, 2-bromo-pentafluoropropene, 3-bromo-pentafluoropropene, 1-bromomethyltrifluoromethyl ether, 2-bromo-1, 1, 2-trifluoroethyltrifluoromethyl ether, 1-bromo-1, 2, 2-trifluoroethyltrifluoromethyl ether, 2-bromo-1, 1, 2-trifluoroethyl trifluoromethyl ether, 1-bromomethyltrifluoromethyl ether, 1-bromopentafluoropropene, 2-bromopentafluoropropene, 1-bromo-1, 2,3,3, 3-pentafluoropropene, 2-bromo-1, 1,3,3, 3-pentafluoropropene, 3-bromo-1, 1,2,3, 3-pentafluoropropene, 1-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-1, 3, 3-tetrafluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 3,3, 3-tetrafluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 1-bromo-1, 2,3, 3-tetrafluoropropene, 3-bromo-1, 1,2, 3-tetrafluoropropene, dodecafluoro-2 methyl-3-pentanone, trifluoroiodomethane, difluoroiodomethane, monofluoroiodomethane, monoiodotrifluoromethane, heptafluoroiodopropane, heptafluoropropane, hexafluoropropane.
Furthermore, the invention has been found through experimental study, aiming at 1-bromo-1, 2-difluoroethylene, 1-bromo-3, 3, 3-trifluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-3, 3, 3-trifluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-pentafluoropropene, 2-bromo-pentafluoropropene, 3-bromo-pentafluoropropene, 1-bromo-pentafluoropropene, 2-bromo-pentafluoropropene, 1-bromo-1, 2,3,3, 3-pentafluoropropene, 2-bromo-1, 1,3,3, 3-pentafluoropropene, 3-bromo-1, 1,2,3, 3-pentafluoropropene, 1-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 3,3, 3-tetrafluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 1-bromo-1, 2,3, 3-tetrafluoropropene, 3-bromo-1, 1,2, 3-tetrafluoropropene, trifluoroiodomethane, difluoroiodomethane, monoiodotrifluoromethane, heptafluoroiodopropane, heptafluoroiodomethane, heptafluoroiodopropane, and mixtures thereof, One or more of heptafluoropropane and hexafluoropropane, preferably sodium carbonate and triethylamine are adopted as a safety additive combination, and the concentrations of the sodium carbonate and the triethylamine are respectively 2% and 0.1%;
for one or more combinations of 1-bromomethyl trifluoromethyl ether, 2-bromo-1, 1, 2-trifluoroethyl trifluoromethyl ether, 1-bromo-1, 2, 2-trifluoroethyl trifluoromethyl ether, dodecafluoro-2 methyl-3-pentanone, 2-bromo-1, 1, 2-trifluoroethyl trifluoromethyl ether, 1-bromomethyl trifluoromethyl ether, combinations employing potassium carbonate and ammonia water as safety additives are preferred, and the concentrations of both are 2% and 0.05%, respectively.
Further, in the halogenated hydrocarbon gas fire extinguishing system of the present invention, the safety additive mixer is a mechanical pumping type proportioner or an electronically controlled proportioner, and preferably a mechanical pumping type proportioner is used.
The safety additive mixer is used for mixing the safety additive and the halogenated hydrocarbon fire extinguishing agent according to a specific proportion of 1-5%, preferably 2-3%.
More specifically, the halogenated hydrocarbon gas fire extinguishing system comprises a halogenated hydrocarbon fire extinguishing agent, a halogenated hydrocarbon fire extinguishing agent box, a water tank, a pressure source, a one-way valve, a safety additive mixer, a safety additive, a fire extinguishing pipeline and an electrified fire extinguishing nozzle.
Wherein, the system pressure source adopts one of a pump group or high-pressure gas.
When fire is extinguished, the halogenated hydrocarbon extinguishing agent in the halogenated hydrocarbon extinguishing agent box is pumped by the pressure source, passes through the one-way valve, is mixed with the safety additive in the water tank at the safety additive mixer, and is extinguished through the extinguishing pipeline and the electrified extinguishing nozzle.
The percentage contents mentioned in the invention refer to the mass percentage contents unless specially stated; all the raw materials or reagents are common commercial products, and all the operations are conventional in the field unless otherwise specified.
The above-described preferred conditions may be combined with each other to obtain a specific embodiment, in accordance with common knowledge in the art.
The invention has the beneficial effects that:
the invention adopts the aqueous solution of inorganic alkali alkalescent salt and/or organic alkalescent compound as the safety additive, and realizes the high-efficiency absorption of the acidic toxic gas generated by the halogenated hydrocarbon fire extinguishing agent. Meanwhile, the inorganic alkali metal alkalescent salt contains alkali metal ions and can also absorb burning free radicals, so that the overall fire extinguishing effect of the fire extinguishing system is further improved.
In general, the halogenated hydrocarbon gas fire extinguishing system provided by the invention has the advantages of high fire extinguishing efficiency, strong insulating capability of the fire extinguishing agent, charged fire extinguishing, no damage risk to equipment due to system misoperation, effective elimination of toxicity of fire extinguishing decomposition products of the halogenated hydrocarbon fire extinguishing agent and the like, and is suitable for being widely applied to electrical fire prevention and control of transformers, cable tunnels, valve halls, distribution rooms and the like.
Drawings
FIG. 1 is a schematic diagram of the construction of a halocarbon gas fire suppression system with a safety additive according to the present invention.
FIG. 2 is an experimental apparatus for evaluating the fire extinguishing effect and the content of hydrogen fluoride toxic gas of the fire extinguishing agent in experimental example 1 of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the following examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the spirit and scope of this invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1
This example illustrates the structure and method of use of the halocarbon gas fire suppression system with safety additives of the present invention.
The halogenated hydrocarbon gas fire extinguishing system method is composed of a halogenated hydrocarbon fire extinguishing agent 1, a halogenated hydrocarbon fire extinguishing agent box 2, a water tank 3, a pressure source 4, a one-way valve 5, a safety additive mixer 6, a safety additive 7, a fire extinguishing pipeline 8 and an electrified fire extinguishing nozzle 9.
The safety additive is mixed with the halogenated hydrocarbon fire extinguishing agent by adopting a mechanical pumping type proportioner. The pressure source 4 of the halocarbon gas fire extinguishing system adopts a pump set. When fire is extinguished, the halogenated hydrocarbon extinguishing agent 1 in the halogenated hydrocarbon extinguishing agent box 2 is pumped by the pressure source 4, passes through the one-way valve 5, is mixed with the safety additive 7 in the water tank 3 at the safety additive mixer 6, and is extinguished through the extinguishing pipeline 8 and the electrified extinguishing nozzle 9.
Example 2
This example illustrates the composition of a halocarbon gas fire suppression system with safety additives according to the present invention.
In the halogenated hydrocarbon gas fire suppression system of example 1:
the halogenated hydrocarbon fire extinguishing agent is 2-bromopentafluoropropene and 1-bromo-2, 3,3, 3-tetrafluoropropene, and the ratio of 4: 6 proportion of the raw materials. The safety additive is an aqueous solution of a mixture of sodium carbonate and triethylamine, and the aqueous solution contains 2% of sodium carbonate and 0.1% of triethylamine.
The safety additive is mixed with the halogenated hydrocarbon fire extinguishing agent by adopting a mechanical pumping type proportioner. The mixing ratio of the safety additive to the halogenated hydrocarbon fire extinguishing agent is 1: 50.
Example 3
This example differs from example 2 in that:
the safety additive is 2% sodium carbonate aqueous solution.
Example 4
This example differs from example 2 in that:
the safety additive is 0.1% triethylamine water solution.
Example 5
This example differs from example 2 in that:
the halogenated hydrocarbon fire extinguishing agent is 1-bromomethyl trifluoromethyl ether and 2-bromo-1, 1, 2-trifluoroethyl trifluoromethyl ether, and the weight ratio of the halogenated hydrocarbon fire extinguishing agent to the halogenated hydrocarbon fire extinguishing agent is as follows, 4: 6 proportion of the raw materials. The safety additive is an aqueous solution of a mixture of potassium carbonate and triethylamine, wherein the aqueous solution contains potassium carbonate and ammonia water, and the concentrations of the potassium carbonate and the ammonia water are 2% and 0.05%, respectively.
Example 6
This example differs from example 5 in that:
the safety additive is 2% potassium carbonate aqueous solution.
Example 7
This example differs from example 5 in that:
the safety additive is 0.05% ammonia water solution.
Comparative example 1
This comparative example differs from example 2 in that:
no safety additives are used.
Comparative example 2
This comparative example differs from example 5 in that:
no safety additives are used.
Experimental example 1
This experimental example is intended to illustrate the effects of the foregoing examples 2 to 7 in terms of fire extinguishing effect and absorption of toxic gases of hydrogen fluoride.
1. Experimental materials:
transformer oil was used as a combustion simulant, the fire extinguishing effect and the content of hydrogen fluoride toxic gas of comparative examples 2 to 7 and comparative examples 1 to 2.
2. The experimental method comprises the following steps:
FIG. 2 is an experimental setup for evaluating the extinguishing effect of the extinguishing agent and the content of hydrogen fluoride toxic gas. The experimental device consists of a combustion simulant 1, a fire extinguishing nozzle 2, a smoke collection bin 3, a smoke exhaust pipeline 4, a smoke analyzer 5, a ventilator 6 and a camera 7.
The experiment adopts 10L transformer oil as a combustion simulant to simulate the process of fire occurrence and fire suppression, and the experimental process is as follows: firstly, pouring 10L of transformer oil into a stainless steel oil pan with the diameter of 50cm, igniting the transformer oil fire by using 0.5L of gasoline, and pre-burning for 2 minutes; then, starting the flue gas analyzer 5, the ventilator 6 and the camera 7; through the shower nozzle 2 of putting out a fire, utilize the halohydrocarbon gas that the flow of putting out a fire be 5L/min to put out a fire, utilize 7 records of appearance of making a video recording time of putting out a fire, utilize collection flue gas storehouse 3 to collect the flue gas, collect gas to flue gas analyzer 5 in flue gas pipeline 4, carry out gas product analysis, analysis hydrogen fluoride toxic gas's content.
3. The experimental results are as follows:
table 1 shows the fire extinguishing effect of examples 2 to 7 and comparative examples 1 to 2, and the content of toxic hydrogen fluoride gas in the combustion products.
TABLE 1 extinguishing effect and Hydrogen fluoride gas content of different extinguishing Agents
4. And (4) conclusion:
as can be seen from table 1, the hydrogen fluoride toxic gas of examples 2 to 4 is greatly reduced compared to comparative example 1 without the safety additive, wherein the hydrogen fluoride toxic gas of example 2 with two safety additives is most reduced. And after the safety additive is added, the fire extinguishing effect is improved to a certain extent.
Meanwhile, as can be seen from table 1, the hydrogen fluoride toxic gas of examples 5 to 7 is greatly reduced compared to comparative example 2 without the safety additive, wherein the hydrogen fluoride toxic gas of example 5 with two safety additives added is most reduced. And after the safety additive is added, the fire extinguishing effect is improved to a certain extent.
The test results show that the invention adopts the aqueous solution of inorganic alkali alkalescent salt and/or organic alkalescent compound as the safety additive, and realizes the high-efficiency absorption of the acidic toxic gas generated by the halogenated hydrocarbon fire extinguishing agent. In addition, through the combination of the inorganic alkali metal alkalescent salt and the organic alkalescent compound, better high-efficiency absorption of the toxic gas of the acidic hydrogen fluoride can be obtained.
In addition, because the safety additive contains inorganic alkali metal salts and certain alkali metal ions, the safety additive can absorb combustion free radicals in the fire extinguishing process, and the overall fire extinguishing effect of the fire extinguishing system is improved to a certain extent.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A halogenated hydrocarbon gas fire extinguishing system having a safety additive, wherein the fire extinguishing system comprises a halogenated hydrocarbon fire extinguishing agent and a safety additive, and a safety additive mixer capable of mixing the halogenated hydrocarbon fire extinguishing agent and the safety additive in proportion;
wherein the safety additive is an aqueous solution of inorganic alkali metal alkalescent salt and an organic alkalescent compound;
the inorganic alkali metal alkalescent salt in the safety additive is one or more of sodium carbonate, sodium bicarbonate, potassium carbonate, lithium bicarbonate, calcium bicarbonate and sodium acetate, and the organic alkalescent compound in the safety additive is one or more of dimethylamine, triethylamine and aniline.
2. A halogenated hydrocarbon gas fire extinguishing system according to claim 1, wherein the total concentration of inorganic alkali weakly basic salts and organic weakly basic compounds in said aqueous solution is between 1% and 10%.
3. A halocarbon gas fire extinguishing system according to claim 2, wherein the total concentration of inorganic alkali weakly basic salts and organic weakly basic compounds in the aqueous solution is 2-6%.
4. The halogenated hydrocarbon gas fire extinguishing system according to any one of claims 1 to 3, wherein the halogenated hydrocarbon fire extinguishing agent is 1-bromo-1, 2-difluoroethylene, 1-bromo-3, 3, 3-trifluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 3, 3-tetrafluoropropene, 1-bromo-pentafluoropropene, 2-bromo-pentafluoropropene, 3-bromo-pentafluoropropene, 1-bromomethyltrifluoromethylether, 2-bromo-1, 1, 2-trifluoroethyl trifluoromethyl ether, 1-bromo-1, 2, 2-trifluoroethyl trifluoromethyl ether, 1-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-1, 2,3, 3-tetrafluoropropene, 3-bromo-1, 1,2, 3-tetrafluoropropene, dodecafluoro-2 methyl-3-pentanone, trifluoroiodomethane, difluoroiodomethane, monofluoroiodomethane, monoiodotrifluoromethane, heptafluoroiodopropane, heptafluoropropane, hexafluoropropane.
5. The halocarbon gas fire suppression system of claim 4, wherein said halocarbon fire suppression agent is 1-bromo-1, 2-difluoroethylene, 1-bromo-3, 3, 3-trifluoropropene, 3-bromo-1, 1,3, 3-tetrafluoropropene, 1-bromo-2, 3,3, 3-tetrafluoropropene, 2-bromo-1, 1,3, 3-tetrafluoropropene, 2-bromo-1, 3,3, 3-tetrafluoropropene, 2-bromo-pentafluoropropene, 3-bromo-pentafluoropropene, 1-bromo-1, 3,3, 3-tetrafluoropropene, 1-bromo-1, 2,3, 3-tetrafluoropropene, The safety additive is one or a combination of more of 3-bromo-1, 1,2, 3-tetrafluoropropene, trifluoroiodomethane, difluoroiodomethane, monofluoroiodomethane, iodotrifluoromethane, heptafluoroiodopropane, heptafluoropropane and hexafluoropropane, and the safety additive is a combination of sodium carbonate and triethylamine, and the concentrations of the safety additive are 2% and 0.1% respectively.
6. The halocarbon gas fire suppression system according to any one of claims 1 to 3, wherein the safety additive mixer is used for mixing a safety additive with a halocarbon fire suppression agent in a specific ratio of 1% to 5% by mass.
7. The halogenated hydrocarbon gas fire extinguishing system according to claim 6, wherein the safety additive mixer is used to mix the safety additive with the halogenated hydrocarbon fire extinguishing agent in a specific ratio of 2-3% by mass.
8. The halocarbon gas fire suppression system of claim 6, wherein said safety additive mixer is a mechanically pumped proportioner or an electronically controlled proportioner.
9. The halocarbon gas fire extinguishing system according to any one of claims 1 to 3 or 7 to 8, wherein the halocarbon gas fire extinguishing system is composed of a halocarbon fire extinguishing agent, a halocarbon fire extinguishing agent tank, a water tank, a pressure source, a one-way valve, a safety additive mixer, a safety additive, a fire extinguishing pipeline and an electrified fire extinguishing nozzle.
10. The halogenated hydrocarbon gas fire extinguishing system according to claim 9, wherein the pressure source employs a pump stack or high pressure gas.
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| CN111420336B (en) * | 2020-03-03 | 2021-10-08 | 北京理工大学 | Lithium ion battery thermal runaway explosion safety prevention and control method and device |
| CN113087589B (en) * | 2021-04-13 | 2022-07-19 | 国网湖南省电力有限公司 | Preparation method of 2-bromo-3, 3, 3-trifluoropropene |
| CN114191750B (en) * | 2021-12-02 | 2023-07-25 | 国网湖南省电力有限公司 | Passivation fire extinguishing and explosion suppression system and method for lithium battery energy storage system |
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