Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oil-type fire-hazard fluorine-containing fire extinguishing agent, liquid hydrocarbon evaporation-inhibiting agent, and preparation method and applications thereof

A solvent and surfactant technology, which is applied in the fields of fluorine-containing fire extinguishing agents and steam suppressors for oil fires, and can solve problems such as long synthesis routes of fluorine-containing surfactants, low total yield of target products, and effects on fire fighting operations , to achieve high industrial application value, excellent surface activity and high yield

Active Publication Date: 2017-11-17
HUAZHONG NORMAL UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strong heat radiation can easily cause adjacent oil tanks and other combustibles to burn, seriously affecting fire fighting operations
(3) It is easy to form large-scale fires, and oil fires spread quickly, and oil and gas flow and spread everywhere, which can easily cause large-area fires
(5) The phenomenon of boiling over and splashing occurs. When an oil fire occurs, due to the release of a large amount of heat radiation during the combustion of the liquid surface, the temperature of the upper oil product rises, and the free water (or emulsified water) particles in the oil product begin to decline. The radiation continuously heats the oil, and the heat wave is continuously transmitted to the liquid surface, the temperature of the oil will rise rapidly to 250-3600°C, and a thin high-temperature layer will be formed. With continuous combustion, the layer will gradually move down and thicken Generally, 30 minutes after the oil tank is on fire, such a high-temperature layer will appear on the upper part of the oil tank, and the water particles will turn into steam bubbles. The bubbles on the surface of this oil product will expand to more than a thousand times the original water volume, and the oil bubbles will Floating to the liquid surface, causing boiling over, spreading on the ground around the oil tank, causing the fire to expand
The synthesis route of the fluorine-containing surfactant reported in these patents is relatively long, or the post-treatment is relatively complicated, and the total yield of the target product is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Oil-type fire-hazard fluorine-containing fire extinguishing agent, liquid hydrocarbon evaporation-inhibiting agent, and preparation method and applications thereof
  • Oil-type fire-hazard fluorine-containing fire extinguishing agent, liquid hydrocarbon evaporation-inhibiting agent, and preparation method and applications thereof
  • Oil-type fire-hazard fluorine-containing fire extinguishing agent, liquid hydrocarbon evaporation-inhibiting agent, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation of embodiment 1 intermediate (M6-1 or M4-1)

[0038] Add 12.2g (0.1mol) of p-hydroxybenzaldehyde into a dry 250mL flask, dissolve it with 150mL of acetonitrile, add 27.6g (0.2mol) of acid-binding agent potassium carbonate under stirring, reflux for half an hour, and then slowly drop the fluorine-containing precursor The raw material is 48.2 g (0.12 mol) of perfluorohexylsulfonyl fluoride or 36.2 g (0.12 mol) of perfluorobutylsulfonyl fluoride, and the end point of the reaction is monitored by TLC. Add 100mL ethyl acetate to the reaction solution, wash 3 times with saturated sodium chloride solution, dry the organic layer with anhydrous sodium sulfate and crystallize at low temperature, filter to obtain the white solid intermediate perfluorohexylsulfonyloxybenzaldehyde (M6- 1) 47.9g (95% yield) or 39.2g (97% yield) of white solid intermediate perfluorobutylsulfonyloxybenzaldehyde (M4-1).

[0039]

[0040] 1 H NMR (400MHz, CDCl 3 ): δ10.05(s, 1H, -CH...

Embodiment 2

[0047] The preparation of embodiment 2 intermediate (M6-2 or M4-2)

[0048] Add 10g (0.02mol) of intermediate M6-1 or 8g (0.02mol) of intermediate M4-1, 100mL of anhydrous methanol into a dry 250mL flask, then add 1.7g (0.02mol) of piperidine, and stir at room temperature for 2h. Then 0.76 g (0.02 mol) of sodium borohydride was added in batches, and the reaction was continued for 10 min, and the end point of the reaction was monitored by TLC. 100mL ethyl acetate was added to the reaction solution, washed three times with saturated sodium chloride solution, the organic layer was dried over anhydrous sodium sulfate and crystallized at low temperature to obtain the white solid intermediate perfluorohexylsulfonyloxybenzylpiperidine (M6- 2) 10.8g (94% yield) or 8.8g (93% yield) of the colorless liquid intermediate perfluorobutylsulfonyloxybenzylpiperidine (M4-2).

[0049]

[0050] 1 H NMR (400MHz, CDCl 3 ): δ7.40(d, J=8.0Hz, 2H, phH), 7.21(d, J=8.0Hz, 2H, phH), 3.46(s, 2H, ph...

Embodiment 3

[0057] The preparation of embodiment 3 intermediate (M6-3 or M4-3)

[0058] Add 10g (0.02mol) of intermediate M6-1 or 8g (0.02mol) of intermediate M4-1, 100mL of anhydrous methanol into a dry 250mL flask, add 1.74g (0.02mol) of morpholine, and stir at room temperature for 2h. Then 0.76 g (0.02 mol) of sodium borohydride was added in batches, and the reaction was continued for 10 min, and the end point of the reaction was monitored by TLC. 100mL ethyl acetate was added to the reaction solution, washed three times with saturated sodium chloride solution, the organic layer was dried over anhydrous sodium sulfate and crystallized at low temperature to obtain the white solid intermediate perfluorohexylsulfonyloxybenzylmorpholine (M6- 3) 11.0 g (96% yield) or 8.7 g (92% yield) of white solid intermediate perfluorobutylsulfonyloxybenzylmorpholine (M4-3).

[0059]

[0060] 1 H NMR (400MHz, CDCl 3 ): δ7.43(d, J=8.0Hz, 2H, phH), 7.23(d, J=8.0Hz, 2H, phH), 3.72(t, J=4.0Hz, 4H, -CH ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an oil-type fire-hazard fluorine-containing fire extinguishing agent, a liquid hydrocarbon evaporation-inhibiting agent, and a preparation method and applications thereof, and more specially relates to a preparation method and applications of a perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant, and an oil-type fire-hazard fluorine-containing fire extinguishing agent and a liquid hydrocarbon evaporation-inhibiting agent of the perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant. According to the preparation method, a short perfluoroalkyl sulfonyl fluoride is taken as a fluorine-containing precursor material to perform sulphonating of p-hydroxy benzaldehyde, reductamination with piperidine or morpholine is carried out, and acidifying, quaternization, and oxidation with a halogen hydride, a halogenated hydrocarbon, and hydrogen peroxide are carried out so as to obtain the perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant. The perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant contains no perfluorooctane, is high in surface activity, and low in critical micelle concentration; an aqueous film forming foam extinguishing agent prepared via compounding of the perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant is high in aqueous film forming speed, and excellent in fire extinguishing and anti-burning performance; the liquid hydrocarbon evaporation-inhibiting agent obtained via compounding of the perfluoroalkyl sulfonyl oxybenzyl nitrogenous heterocyclic type surfactant is high in spreading speed, is capable of forming water film of certain strength, possesses relatively high hygroscopicity, and is capable of inhibiting evaporation of liquid hydrocarbon in a long period of time.

Description

technical field [0001] The invention relates to the field of application of fluorine-containing fire extinguishing agent and steam suppressant for oil fires, in particular to a class of perfluoroalkylsulfonyloxybenzyl nitrogen-heterocyclic surfactants and the fluorine-containing fire extinguishing agent for oil fires and liquid hydrocarbons Preparation method and application of anti-evaporating agent. Background technique [0002] Most oily substances are flammable and explosive liquids with a low flash point. When a fire occurs, they have the following characteristics: (1) There is a high risk of explosion. Oily substances evaporate in large quantities when heated, and when the mixture of steam and air reaches a certain ratio, it encounters an open flame That is, an explosion occurs, and under the action of shock waves or high temperature and high pressure, physical explosions of equipment and containers occur. (2) The flame temperature is high and the radiant heat is stro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01F17/32C07D295/092C07D295/24A62D1/02C09K23/32
CPCA62D1/0085C07D295/092C07D295/24C09K23/00
Inventor 张爱东吴文海段江林欣魏婷涂海洋
Owner HUAZHONG NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com