CN111494862A - Edible oil fire extinguishing agent - Google Patents
Edible oil fire extinguishing agent Download PDFInfo
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- CN111494862A CN111494862A CN202010377799.1A CN202010377799A CN111494862A CN 111494862 A CN111494862 A CN 111494862A CN 202010377799 A CN202010377799 A CN 202010377799A CN 111494862 A CN111494862 A CN 111494862A
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- edible oil
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0007—Solid extinguishing substances
- A62D1/0014—Powders; Granules
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0092—Gaseous extinguishing substances, e.g. liquefied gases, carbon dioxide snow
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
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- Fire-Extinguishing Compositions (AREA)
Abstract
The invention provides an edible oil fire extinguishing agent. The technical scheme takes mineral powder as a main component, and is matched with a chemical fire extinguishing agent and an inert gas component to act on a fire scene in a spraying mode; the mineral powder with specific granularity not only plays a role in covering, but also has certain adsorbability on edible oil based on the porous structure of the mineral powder, so that a certain barrier fire-extinguishing effect is achieved microscopically; in addition, the invention adopts the sevoflurane with higher safety, and can play a better fire extinguishing effect by utilizing the gasification heat absorption of the sevoflurane while directly extinguishing the fire; in addition, the mineral powder such as mullite powder, silicon carbide and the like is sprayed out under the wrapping of high-pressure gas such as tetrafluorodibromoethane, difluoromonochloro-bromomethane and the like to form certain impact on flame, so that the fire extinguishing effect is further promoted. The invention is especially suitable for extinguishing edible oil fire and has outstanding fire extinguishing effect.
Description
Technical Field
The invention relates to the technical field of fire extinguishing agents, further relates to component improvement of the fire extinguishing agents, and particularly relates to an edible oil fire extinguishing agent.
Background
Although the edible oil is difficult to evaporate at normal temperature, when the edible oil is continuously heated, the evaporation rate is correspondingly accelerated, the steam concentration above an oil layer quickly reaches the flammable limit, the edible oil is easy to ignite as long as open fire appears, common edible oil varieties can generate spontaneous combustion when the temperature of the oil layer reaches more than 360-370 ℃, the oil temperature quickly reaches a full combustion state, the oil temperature is quickly increased to 400-600 ℃, once the edible oil is combusted, the edible oil has high heat quantity enough to maintain continuous combustion, therefore, the edible oil has the characteristics of high heat release rate, high spreading speed and the like, and due to the fact that the overall temperature of a combustion medium is higher and the spontaneous combustion point of a part of thermal decomposition products of the edible oil is reduced due to component change in the combustion process, if no effective means is available, the edible oil is easy to re-combust after fire extinguishment, and therefore, the edible oil is difficult to control fire.
In view of the particularity of edible oil fire, the conventional fire extinguishing agent is generally not ideal enough for the fire extinguishing performance. The common foam extinguishing agent can be used for extinguishing edible oil fire, but the generated foam cannot maintain good stability on the hot oil surface and cannot play a role in sufficient covering and isolating; a brief and violent flash-off occurs at the initial stage of foam fire-extinguishing agent application, which rapidly increases the flame size several times before, and also causes a strong splashing, which makes it extremely easy to ignite other flammable materials around the cooking equipment. As for the conventional powder extinguishing agent, the powder extinguishing agent is extremely easy to re-ignite after extinguishing a fire because the powder extinguishing agent does not have the cooling effect; moreover, due to the dispersivity of the powder, the whole kitchen area is easily polluted by the powder after fire extinguishment, the fire scene is extremely difficult to clean, and the pollution which is difficult to eliminate is caused to the kitchen area with extremely high requirement on the cleanness. Although the carbon dioxide gas fire extinguishing agent can control open fire, the edible oil after fire extinguishing still keeps quite high temperature, and CO is in the edible oil2After gradual dispersion, the uncooled edible oil may re-ignite at any time after being exposed to oxygen. And CO2The normal breathing of surrounding people is affected when the concentration is too high, and the risk is particularly prominent in the closed environment of a kitchen.
Disclosure of Invention
The invention aims to overcome the technical defects of the prior art and provides an edible oil fire extinguishing agent so as to solve the technical problem that the conventional fire extinguishing agent has poor fire extinguishing performance on edible oil fires in the prior art.
The invention aims to solve another technical problem of how to realize high-efficiency fire extinguishing of edible oil fire and reduce the occurrence rate of re-combustion.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an edible oil fire extinguishing agent comprises the following components in parts by weight: 24-30 parts of mullite powder, 16-18 parts of heptafluoropropane, 10-12 parts of diatomite, 10-12 parts of kaolin, 4-6 parts of phenolic resin, 4-6 parts of silicon carbide, 1-3 parts of zirconia, 2-4 parts of tetrafluorodibromoethane, 2-4 parts of magnesium sulfate and 4-8 parts of clay.
Preferably, the composition also comprises 1-3 parts by weight of difluoro monochloro monobromomethane.
Preferably, the fertilizer also comprises 2-4 parts by weight of ammonium dihydrogen phosphate.
Preferably, the paint also comprises 3-7 parts by weight of alumina.
Preferably, the corundum powder also comprises 2-4 parts by weight of corundum powder.
Preferably, the edible oil fire extinguishing agent consists of the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate and 6 parts of clay.
Preferably, the edible oil fire extinguishing agent consists of the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate, 6 parts of clay, 2 parts of difluoro monochloro monobromomethane, 3 parts of ammonium dihydrogen phosphate, 5 parts of alumina and 3 parts of corundum powder.
Preferably, the granularity of the mullite powder is 10-40 mu m.
The invention provides an edible oil fire extinguishing agent. According to the technical scheme, the influence of different fire extinguishing agent components on the combustion state of the edible oil is investigated based on experimental means, and on the basis, the synergistic relationship is optimized, so that a brand-new fire extinguishing agent formula is obtained. The formula takes mineral powder as a main component, is matched with a chemical fire extinguishing agent and an inert gas component, and acts on a fire scene in a spraying mode; the mineral powder with specific granularity not only plays a role in covering, but also has certain adsorbability on edible oil based on the porous structure of the mineral powder, so that a certain barrier fire-extinguishing effect is achieved microscopically; in addition, the invention adopts the sevoflurane with higher safety, and can play a better fire extinguishing effect by utilizing the gasification heat absorption of the sevoflurane while directly extinguishing the fire; in addition, the mineral powder such as mullite powder, silicon carbide and the like is sprayed out under the wrapping of high-pressure gas such as tetrafluorodibromoethane, difluoromonochloro-bromomethane and the like to form certain impact on flame, so that the fire extinguishing effect is further promoted. The invention is especially suitable for extinguishing edible oil fire and has outstanding fire extinguishing effect.
Drawings
FIG. 1 is a graph of the temperature of a fire scene as a function of time during a fire extinguishing process using the fire extinguishing agent of the present invention.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail. Well-known structures or functions may not be described in detail in the following embodiments in order to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Example 1
An edible oil fire extinguishing agent comprises the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate and 6 parts of clay. Wherein the granularity of the mullite powder is 10-40 mu m.
Example 2
An edible oil fire extinguishing agent comprises the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate, 6 parts of clay, 2 parts of difluoro monochloro monobromomethane, 3 parts of ammonium dihydrogen phosphate, 5 parts of alumina and 3 parts of corundum powder.
Example 3
An edible oil fire extinguishing agent comprises the following components in parts by weight: 24 parts of mullite powder, 16 parts of heptafluoropropane, 10 parts of diatomite, 10 parts of kaolin, 4 parts of phenolic resin, 4 parts of silicon carbide, 1 part of zirconia, 2 parts of tetrafluorodibromoethane, 2 parts of magnesium sulfate and 4 parts of clay.
Example 4
An edible oil fire extinguishing agent comprises the following components in parts by weight: 30 parts of mullite powder, 18 parts of heptafluoropropane, 12 parts of diatomite, 12 parts of kaolin, 6 parts of phenolic resin, 6 parts of silicon carbide, 3 parts of zirconia, 4 parts of tetrafluorodibromoethane, 4 parts of magnesium sulfate and 8 parts of clay.
Example 5
This example is for examining the fire extinguishing performance of the fire extinguishing agent of the present invention.
1. Compared with the commercial foam extinguishing agent and the dry powder extinguishing agent, the extinguishing agent of the invention has the extinguishing performance
Test conditions and ratings:
6 liters of class A fire extinguishing agent needs to reach the 1A fire extinguishing grade (meeting the rating of 4); the fire extinguishing grade of more than 2A is achieved, (5 grades are evaluated).
6 liters of class B fire extinguishing agent needs to reach 55B fire extinguishing grade (meeting the rating of 4); the fire extinguishing grade of more than 70B is achieved, (5 grades are evaluated).
The fire extinguishing agent with the K-class fire below 1 liter needs to reach the 5F fire extinguishing grade (meets the 4 grade); achieves the fire extinguishing grade of more than 35F (grade 5).
The class F fire extinguishing agent below 1 liter needs to reach the 5F fire extinguishing grade (meeting the rating of 4); achieves the fire extinguishing grade of more than 35F (grade 5).
According to the test conditions, the A-type fire, the B-type fire, the K-type fire and the F-type fire are respectively extinguished by using the chemical foam extinguishing agent, the dry powder extinguishing agent and the fire extinguishing agent. The results of the experiment are shown in Table 1
TABLE 1 comparative experiment results of fire extinguishing performance of the fire extinguishing agent of the present invention, commercially available foam fire extinguishing agents and dry powder fire extinguishing agents
| Type of fire | The fire extinguishing agent of the invention | Chemical foam fire-extinguishing agent | Dry powder extinguishing agent |
| Class A |
5 | 4 | 2 |
| |
4 | 3 | 4 |
| Fire of class K | 5 | 2 | 2 |
| Class F |
5 | 2 | 3 |
As can be seen from the above Table 1, the fire extinguishing performance of the invention is comprehensively superior to that of chemical foam extinguishing agents and dry powder extinguishing agents sold in the market, and the invention has obvious advantages compared with other extinguishing agents in the extinguishing of K-type fire and F-type fire; furthermore, good fire extinguishing performance was exhibited in extinguishing class A fire and class B fire.
2. Fire scene fire extinguishing experiment and performance and efficiency test
Adopting a kitchen environment to construct a simulated fire scene, and carrying out a field test experiment: the scale of a fire scene is 30 square meters, the vegetable oil point is positioned in a pot, the vegetable oil naturally spreads for 5min after ignition, the combustion range exceeds 20 square meters, and no natural gas is involved. The experimental results are shown in table 2 below.
TABLE 2 field fire performance index
As shown in the above table 2, under the same spraying pressure, the fire extinguishing agent of the invention has extremely fast fire extinguishing speed, which is shorter than that of the conventional commercial fire extinguishing agent by more than 60%; moreover, the fire extinguishing agent has low dosage, and even if the dosage is converted into the same fire extinguishing time, the total amount of the fire extinguishing agent is the lowest, and the fire extinguishing agent has outstanding fire extinguishing efficiency. In addition, the temperature of the invention is lower after fire extinguishment, the occurrence rate of the re-ignition phenomenon is fundamentally reduced, and practical experiments also prove that the re-ignition phenomenon does not occur at a plurality of ignition points after the invention is adopted for fire extinguishment.
3. Data investigation of fire extinguishing process
In the process of extinguishing by using the fire extinguishing agent, the fire extinguishing starting time and the open fire extinguishing time are recorded, the change condition of the temperature of a simulated fire scene along with time is recorded, and the experimental result is shown in figure 1.
In fig. 1, the left vertical line is the fire extinguishing start time; the right vertical line is the time for extinguishing the open fire. As can be shown by the temperature of the fire scene reflected by the figure 1, after the fire extinguishing agent is applied, the fire extinguishing process is quite obvious, the temperature change of the fire scene is basically in a one-way decreasing state, and the temperature rise caused by local reburning or incomplete fire extinguishing does not occur; moreover, in the final stage of the fire extinguishing process, the temperature drop speed of the fire scene is not obviously slowed down, and the natural heat dissipation speed of the fire scene is far lower than that of the fire scene at high temperature (about 1200 ℃) at low temperature (about 400 ℃), so that the fire extinguishing agent shows good continuity in the fire extinguishing process.
In conclusion, the fire extinguishing agent has good fire extinguishing performance and is comprehensively superior to the existing commercially available foam extinguishing agents and dry powder extinguishing agents; moreover, the invention is particularly suitable for the extinguishing work of F-type fire and has outstanding technical advantages.
The embodiments of the present invention have been described in detail, but the description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the scope of the application of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The edible oil fire extinguishing agent is characterized by comprising the following components in parts by weight: 24-30 parts of mullite powder, 16-18 parts of heptafluoropropane, 10-12 parts of diatomite, 10-12 parts of kaolin, 4-6 parts of phenolic resin, 4-6 parts of silicon carbide, 1-3 parts of zirconia, 2-4 parts of tetrafluorodibromoethane, 2-4 parts of magnesium sulfate and 4-8 parts of clay.
2. The edible oil fire extinguishing agent according to claim 1, further comprising 1-3 parts by weight of difluoromonochloromonobromomethane.
3. The edible oil fire extinguishing agent according to claim 1, further comprising 2-4 parts by weight of ammonium dihydrogen phosphate.
4. The edible oil fire extinguishing agent according to claim 1, further comprising 3 to 7 parts by weight of alumina.
5. The edible oil fire extinguishing agent according to claim 1, further comprising 2-4 parts by weight of corundum powder.
6. The edible oil fire extinguishing agent according to claim 1, characterized in that the edible oil fire extinguishing agent comprises the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate and 6 parts of clay.
7. The edible oil fire extinguishing agent according to claim 1, characterized in that the edible oil fire extinguishing agent is composed of the following components in parts by weight: 27 parts of mullite powder, 17 parts of heptafluoropropane, 11 parts of diatomite, 11 parts of kaolin, 5 parts of phenolic resin, 5 parts of silicon carbide, 2 parts of zirconia, 3 parts of tetrafluorodibromoethane, 3 parts of magnesium sulfate, 6 parts of clay, 2 parts of difluoro monochloro monobromomethane, 3 parts of ammonium dihydrogen phosphate, 5 parts of alumina and 3 parts of corundum powder.
8. The edible oil fire extinguishing agent according to claim 1, wherein the mullite powder has a particle size of 10-40 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377799.1A CN111494862A (en) | 2020-05-07 | 2020-05-07 | Edible oil fire extinguishing agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010377799.1A CN111494862A (en) | 2020-05-07 | 2020-05-07 | Edible oil fire extinguishing agent |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319499A (en) * | 2011-07-19 | 2012-01-18 | 南京理工大学 | Built-up synergetic class-A/B water extinguishing agent series |
| RU2465938C1 (en) * | 2011-11-25 | 2012-11-10 | Федеральное Государственное Бюджетное Учреждение Науки Институт Химии И Химической Технологии Сибирского Отделения Российской Академии Наук (Иххт Со Ран) | Fire-extinguishing powder and method of its obtaining |
| CN103649272A (en) * | 2011-08-30 | 2014-03-19 | 英派尔科技开发有限公司 | Ferrocene /carbon dioxide releasing system |
| CN104177875A (en) * | 2014-08-26 | 2014-12-03 | 王会智 | Flame-retardant fireproof coating |
| US20160114203A1 (en) * | 2013-06-18 | 2016-04-28 | National University Corporation Yokohama National University | Fire extinguishing agent and fire extinguishing method |
| WO2017184022A1 (en) * | 2016-04-22 | 2017-10-26 | К5 Лтд | Polymer composition for preparing thermally-activated fire-extinguishing materials |
| CN108187293A (en) * | 2018-01-26 | 2018-06-22 | 四川峰邦东霖消防科技有限公司 | A kind of novel environment friendly aqua type extinguishing chemical and preparation method thereof |
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-
2020
- 2020-05-07 CN CN202010377799.1A patent/CN111494862A/en not_active Withdrawn
Patent Citations (8)
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|---|---|---|---|---|
| CN102319499A (en) * | 2011-07-19 | 2012-01-18 | 南京理工大学 | Built-up synergetic class-A/B water extinguishing agent series |
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| RU2465938C1 (en) * | 2011-11-25 | 2012-11-10 | Федеральное Государственное Бюджетное Учреждение Науки Институт Химии И Химической Технологии Сибирского Отделения Российской Академии Наук (Иххт Со Ран) | Fire-extinguishing powder and method of its obtaining |
| US20160114203A1 (en) * | 2013-06-18 | 2016-04-28 | National University Corporation Yokohama National University | Fire extinguishing agent and fire extinguishing method |
| CN104177875A (en) * | 2014-08-26 | 2014-12-03 | 王会智 | Flame-retardant fireproof coating |
| WO2017184022A1 (en) * | 2016-04-22 | 2017-10-26 | К5 Лтд | Polymer composition for preparing thermally-activated fire-extinguishing materials |
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