CN111035881A - Fluoprotein foam extinguishing agent and preparation method thereof - Google Patents

Abstract

The invention provides a fluoroprotein foam fire extinguishing agent and a preparation method thereof, wherein the fluoroprotein foam fire extinguishing agent comprises 95-98% of a protein hydrolysate concentrated solution, 0.5-1.5% of an environment-friendly fluorocarbon surfactant, 0.6-1.2% of a foam stabilizer and 0.5-1% of a preservative in percentage by weight. The product has good degradability and does not cause pollution to the environment. In a fire extinguishing test of the water-insoluble liquid fuel, the foam of the fluoroprotein foam extinguishing agent provided by the invention has extremely strong stability and covering performance.

Description

Fluoprotein foam extinguishing agent and preparation method thereof

Technical Field

The invention relates to the field of application of fire extinguishing agents, in particular to a fluoroprotein foam extinguishing agent and a preparation method thereof.

Background

The protein type foam fire-extinguishing agent is prepared by using hydrolyzed concentrated solution of animal protein or plant protein as base material and adding proper amount of stabilizing, antiseptic and antifreezing agent and other additives. The protein type foam extinguishing agent belongs to a mainstream foam product in the market of foam extinguishing agents in China due to the excellent performances of high reliability, low price, good biodegradability and the like. At present, the fire extinguishing agent is one of the most widely applied fire extinguishing agents in petrochemical engineering fire fighting. The protein type foam extinguishing agent is mainly divided into two categories of protein foam extinguishing agent and fluorine protein foam extinguishing agent.

The fluorine protein foam fire extinguishing agent is prepared by adding fluorocarbon and other types of surfactants into protein foam stock solution serving as a main component. Compared with the common protein foam fire extinguishing agent, the fluorocarbon foam fire extinguishing agent has the advantages of good foaming performance, easy flowing, strong oleophobic ability, good compatibility with dry powder and the like due to the addition of the fluorocarbon surfactant, and the fire extinguishing efficiency is greatly superior to that of the common protein foam fire extinguishing agent.

In addition, PFOS, PFOA and the like are added as persistent organic pollutants by the limit of the stockholm convention on persistent organic pollutants, and at present, the management and control of China are gradually increased; and practitioners in the fire-fighting industry need to develop alternative technical research while enhancing management and risk prevention according to the environmental protection requirements of related industries, so that the use of the product in the fire extinguishing agent is gradually eliminated, and the pollution of the product to the environment is reduced as much as possible.

Disclosure of Invention

In order to solve the problems in the background art and meet the requirement of environmental protection development, the invention aims to provide a fluoroprotein foam extinguishing agent to achieve the purposes of higher environmental protection and reduction of environmental pollution.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a fluoroprotein foam extinguishing agent comprises 95-98% of a protein hydrolysate concentrated solution, 0.5-1.5% of an environment-friendly fluorocarbon surfactant, 0.6-1.2% of a foam stabilizer and 0.5-1% of a preservative in percentage by weight.

As an optional technical scheme, the hydrolyzed protein concentrated solution comprises animal protein; the environment-friendly fluorocarbon surfactant comprises fluorine-containing polymers; the foam stabilizer comprises ferrous sulfate; the preservative comprises phenol.

As an optional technical scheme, the fire extinguishing agent comprises 95 wt% of hydrolyzed protein concentrated solution, 0.5 wt% of environment-friendly fluorocarbon surfactant, 0.6 wt% of foam stabilizer and 0.5 wt% of preservative.

As an optional technical scheme, the fire extinguishing agent comprises 96.8 wt% of hydrolyzed protein concentrated solution, 0.9 wt% of environment-friendly fluorocarbon surfactant, 0.8 wt% of foam stabilizer and 0.6 wt% of preservative.

As an optional technical scheme, the fire extinguishing agent comprises 98% of hydrolyzed protein concentrated solution, 1.5% of environment-friendly fluorocarbon surfactant, 1.2% of foam stabilizer and 1% of preservative by weight.

As an optional technical scheme, the environment-friendly fluorocarbon surfactant is an anionic or nonionic fluorocarbon surfactant.

As an optional technical scheme, the environment-friendly fluorocarbon surfactant is prepared by an oligomerization method.

As an optional technical scheme, the fluoroprotein foam fire extinguishing agent is suitable for preventing and extinguishing water-insoluble solvent fire.

The invention also provides a method for preparing the fluoroprotein foam extinguishing agent, which comprises the following steps:

s1, mixing the environment-friendly fluorocarbon surfactant with the hydrolyzed protein concentrated solution to form a component A;

s2, mixing a foam stabilizer and a preservative with a proper amount of water to form a component B, mixing the component B with the component A, transferring the mixture into a stirring tank, fully stirring to form a reaction solution, adjusting the pH value of the reaction solution to 7.0 +/-0.5, and controlling the temperature of the reaction solution to 40 +/-3 ℃; and the number of the first and second groups,

s3, standing and defoaming the reaction solution to obtain the fluoroprotein water film-forming foam extinguishing agent.

Compared with the prior art, the fluoroprotein foam extinguishing agent provided by the invention has the following advantages:

firstly, the main component of the fluoroprotein foam extinguishing agent provided by the invention is the hydrolyzed protein concentrated solution, so that the product has good degradability and can be automatically biodegraded in a short time. In addition, the fertilizer can be used as a fertilizer, and does not cause pollution to the environment.

Secondly, compared with the existing synthetic foam extinguishing agent product, the fluoroprotein foam extinguishing agent provided by the invention has the advantages of better stability and covering performance, long burning-resistant time and the like, and is incomparable with the synthetic foam extinguishing agent.

Thirdly, compared with the domestic commercial foam extinguishing agent (the standard of GB15308-2006 foam extinguishing agent) in the fire extinguishing test of the water-insoluble liquid fuel, the fluoroprotein foam extinguishing agent provided by the invention (which conforms to the rule of BS EN1568-3:2008 foam extinguishing agent-Chapter III: water-insoluble low-multiple foam extinguishing agent) has the advantages that the foam of the fluoroprotein foam extinguishing agent provided by the invention has extremely strong stability and covering performance.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 shows the detection results of the fluoroprotein foam extinguishing agent prepared by the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a fluoroprotein foam fire extinguishing agent which comprises 95-98% of a protein hydrolysate concentrated solution, 0.5-1.5% of an environment-friendly fluorocarbon surfactant, 0.6-1.2% of a foam stabilizer and 0.5-1% of a preservative in percentage by weight.

In a preferred embodiment, the hydrolyzed protein concentrate comprises an animal protein; the environment-friendly fluorocarbon surfactant comprises fluorine-containing polymers; the foam stabilizer comprises ferrous sulfate; the preservative comprises phenol.

The environment-friendly fluorocarbon surfactant in the fluoroprotein foam extinguishing agent provided by the invention is an anionic or nonionic fluorocarbon surfactant. The environment-friendly fluorocarbon surfactant is fluorine-containing polymer without PFOA and PFOS. The environment-friendly fluorocarbon surfactant is prepared by an oligomerization method.

The first embodiment is as follows:

the fire extinguishing agent comprises 95 percent of hydrolyzed protein concentrated solution (95 percent of hydrolyzed animal protein concentrated solution), 0.5 percent of environment-friendly fluorocarbon surfactant, 0.6 percent of foam stabilizer and 0.5 percent of preservative by weight percentage; firstly, mixing an environment-friendly fluorocarbon surfactant, a foam stabilizer and a preservative with a proper amount of water to form a component A, mixing the component A and a protein hydrolysate concentrated solution, transferring the mixture into a stirring tank, fully stirring to form a reaction solution, adjusting the pH value of the reaction solution to be 6.8-7.0, controlling the temperature to be about 40 +/-3 ℃, standing and defoaming to prepare the fluorine protein foam extinguishing agent.

Example two:

the fire extinguishing agent comprises 96.8 percent of hydrolyzed protein concentrated solution (95 percent of hydrolyzed animal protein concentrated solution), 0.9 percent of environment-friendly fluorocarbon surfactant, 0.8 percent of foam stabilizer and 0.6 percent of preservative by weight percentage; firstly, adding a proper amount of water into an environment-friendly fluorocarbon surfactant, a foam stabilizer and a preservative to mix to form a component A; mixing the component A and the hydrolyzed protein concentrated solution, transferring the mixture into a stirring tank, fully stirring to form reaction liquid, adjusting the pH value of the reaction liquid to 6.9-7.2, controlling the temperature to be about 40 +/-3 ℃, standing and defoaming to obtain the fluorine protein foam extinguishing agent.

Example three:

the fire extinguishing agent comprises 98 percent of hydrolyzed protein concentrated solution, 1.5 percent of environment-friendly fluorocarbon surfactant, 1.2 percent of foam stabilizer and 1 percent of preservative by weight percentage; firstly, mixing an environment-friendly fluorocarbon surfactant, a foam stabilizer and a preservative with a proper amount of water to form a component A, then mixing the component A with a protein hydrolysate concentrated solution, transferring the mixture into a stirring tank, fully stirring to form a reaction solution, adjusting the pH value of the reaction solution to be 6.9-7.3, controlling the temperature to be about 40 +/-3 ℃, standing and defoaming to prepare the fluorine protein foam extinguishing agent.

FIG. 1 shows the results of testing SFE-FP3% products prepared according to the compositions and preparation methods of the present invention.

As shown in figure 1, all indexes of the fluoroprotein foam extinguishing agent disclosed by the invention meet the requirements of reference standards (BS EN1568-3:2008 foam extinguishing agent-third chapter: water-insoluble low-multiple foam extinguishing agent rule). The performance of the fluorine protein foam extinguishing agent provided by the invention is more advantageous than that of a commercially available fluorine protein foam extinguishing agent executing the GB15308-2006 foam extinguishing agent standard, and the phenomenon of foam oil is greatly improved in a strong discharge fire extinguishing test, so that deflagration of fire behavior can not be caused when a burning resistance test is carried out.

Specifically, the fluoroprotein foam extinguishing agent provided by the invention has the advantages that:

firstly, the main component of the fluoroprotein foam extinguishing agent provided by the invention is the hydrolyzed protein concentrated solution, so that the product has good degradability and can be automatically biodegraded in a short time. In addition, the fertilizer can be used as a fertilizer, and does not cause pollution to the environment.

Secondly, compared with the existing synthetic foam extinguishing agent product, the fluoroprotein foam extinguishing agent provided by the invention has the advantages of better stability and covering performance, long burning-resistant time and the like, and is incomparable with the synthetic foam extinguishing agent.

Thirdly, compared with the domestic commercial foam extinguishing agent (the standard of GB15308-2006 foam extinguishing agent) in the fire extinguishing test of the water-insoluble liquid fuel, the fluoroprotein foam extinguishing agent provided by the invention (which conforms to the rule of BS EN1568-3:2008 foam extinguishing agent-Chapter III: water-insoluble low-multiple foam extinguishing agent) has the advantages that the foam of the fluoroprotein foam extinguishing agent provided by the invention has extremely strong stability and covering performance.

The above product standard BS EN1568-3:2008 foam fire-extinguishing agent-chapter three: the water-insoluble low-multiple foam extinguishing agent rule is an European Union standard adopted in the UK, is an international advanced standard, has internationally mutual recognition, and can be used for the admission and sale of high-end foreign markets such as eastern Europe and the like.

Experiments prove that the fluoroprotein foam extinguishing agent disclosed by the invention is particularly suitable for preventing and extinguishing water-insoluble solvent fire.

In addition, the invention also discloses a method for preparing the fluoroprotein foam extinguishing agent, which comprises the following steps:

s1, mixing the environment-friendly fluorocarbon surfactant with the hydrolyzed protein concentrated solution to form a component A;

s2, mixing a foam stabilizer and a preservative with a proper amount of water to form a component B, mixing the component B with the component A, transferring the mixture into a stirring tank, fully stirring to form a reaction solution, adjusting the pH value of the reaction solution to 7.0 +/-0.5, and controlling the temperature of the reaction solution to 40 +/-3 ℃; and the number of the first and second groups,

s3, standing and defoaming the reaction solution to obtain the fluoroprotein water film-forming foam extinguishing agent.

In summary, the invention discloses a fluoroprotein foam fire extinguishing agent, which uses the environment-friendly fluorinated surfactant and the hydrolyzed protein concentrated solution, so that the fire extinguishing agent can be automatically degraded in a certain period, does not cause pollution to the environment, and is a real green environment-friendly product; meanwhile, the excellent stability of the fire extinguishing agent is ensured by optimizing the components and the proportion of the fire extinguishing agent.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

Claims (9)

1. A fluoroprotein foam extinguishing agent comprises 95-98% of a protein hydrolysate concentrated solution, 0.5-1.5% of an environment-friendly fluorocarbon surfactant, 0.6-1.2% of a foam stabilizer and 0.5-1% of a preservative in percentage by weight.

2. The fluoroprotein foam fire extinguishing agent as claimed in claim 1, wherein the hydrolyzed protein concentrate comprises animal protein; the environment-friendly fluorocarbon surfactant comprises fluorine-containing polymers; the foam stabilizer comprises ferrous sulfate; the preservative comprises phenol.

3. The fluoroprotein foam fire extinguishing agent as claimed in claim 1 or 2, wherein the fire extinguishing agent comprises 95% of hydrolyzed protein concentrate, 0.5% of environmentally friendly fluorocarbon surfactant, 0.6% of foam stabilizer and 0.5% of preservative.

4. The fluoroprotein foam fire extinguishing agent as claimed in claim 1 or 2, wherein the fire extinguishing agent comprises 96.8% of hydrolyzed protein concentrate, 0.9% of environmentally friendly fluorocarbon surfactant, 0.8% of foam stabilizer and 0.6% of preservative.

5. The fluoroprotein foam fire extinguishing agent as claimed in claim 1 or 2, wherein the fire extinguishing agent comprises 98% of hydrolyzed protein concentrate, 1.5% of environmentally friendly fluorocarbon surfactant, 1.2% of foam stabilizer and 1% of preservative.

6. The fluoroprotein foam fire extinguishing agent of claim 1, wherein the environmentally friendly fluorocarbon surfactant is an anionic or non-ionic fluorocarbon surfactant.

7. The fluoroprotein foam fire extinguishing agent of claim 1 wherein the environmentally friendly fluorocarbon surfactant is produced by an oligomerization process.

8. The fluoroprotein foam fire extinguishing agent as claimed in any of claims 1 to 7, wherein the fluoroprotein foam fire extinguishing agent is suitable for prevention and suppression of water-insoluble solvent fire.

9. A method of producing the fluoroprotein foam fire extinguishing agent as claimed in any of claims 1 to 7, characterized in that the production method comprises the steps of:

s1, mixing the environment-friendly fluorocarbon surfactant with the hydrolyzed protein concentrated solution to form a component A;

s2, mixing a foam stabilizer and a preservative with a proper amount of water to form a component B, mixing the component B with the component A, transferring the mixture into a stirring tank, fully stirring to form a reaction solution, adjusting the pH value of the reaction solution to 7.0 +/-0.5, and controlling the temperature of the reaction solution to 40 +/-3 ℃; and the number of the first and second groups,

s3, standing and defoaming the reaction solution to obtain the fluoroprotein water film-forming foam extinguishing agent.

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