CN111135520A - Superfine dry powder extinguishing agent and preparation method thereof - Google Patents
Superfine dry powder extinguishing agent and preparation method thereof Download PDFInfo
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- CN111135520A CN111135520A CN201911275723.1A CN201911275723A CN111135520A CN 111135520 A CN111135520 A CN 111135520A CN 201911275723 A CN201911275723 A CN 201911275723A CN 111135520 A CN111135520 A CN 111135520A
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- parts
- extinguishing agent
- dry powder
- superfine dry
- powder extinguishing
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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
Abstract
The invention discloses a superfine dry powder extinguishing agent and a preparation method thereof, relates to the technical field of extinguishing agents, and solves the problems of large particle size, high moisture absorption rate and easy agglomeration of the conventional dry powder extinguishing agent. The superfine dry powder extinguishing agent comprises 82-95 parts of monoammonium phosphate, 4-8 parts of white carbon black, 0.2-1 part of silicone oil, 2-5 parts of mica powder and 2-5 parts of talcum powder by mass parts, and has the advantages of low particle water content, low moisture absorption rate, water repellency, strong anti-caking capacity and longer storage life.
Description
Technical Field
The invention relates to the technical field of fire extinguishing agents, in particular to an ultrafine dry powder fire extinguishing agent and a preparation method thereof, which are used for improving the fire extinguishing performance and the quality guarantee period of a common dry powder fire extinguishing agent.
Background
Combustion is a vigorous chain oxidation reaction that proceeds by the continual transfer of reactive free radicals. The active fire extinguishing component in the dry powder fire extinguishing agent captures and stops free radicals generated by combustion reaction, so that the combustion reaction rate is reduced, when the concentration of the dry powder fire extinguishing agent in the flame is high enough, the contact area of the dry powder fire extinguishing agent and the flame is large enough, the stopping rate of the free radicals is greater than the generating rate of the combustion reaction, the chain type combustion reaction is stopped, and the flame is extinguished. The superfine powder extinguishing agent has high extinguishing efficiency, is dry and easy to flow. The fire extinguishing agent mainly comprises an active fire extinguishing component, a crushing auxiliary agent component, a hydrophobic component, an inert filler component and the like. The fire extinguishing principle mainly comprises the following steps: firstly, the volatile decomposition products of inorganic salt in the powder and free radicals or active groups generated by fuel in the combustion process have chemical inhibition and side catalysis effects, so that the combustion chain reaction is interrupted to extinguish fire; secondly, a layer of glass-shaped covering layer is formed by the fine powder falling on the surface of the burning object under the action of high temperature, thereby isolating oxygen and extinguishing fire by suffocation.
Because the particle size of the superfine dry powder extinguishing agent is very small, the superfine dry powder extinguishing agent has wider coverage area and stronger adhesiveness under the same mass. In recent years, with the gradual maturity of the production process of the superfine dry powder extinguishing agent, the fire extinguishing performance of the superfine dry powder extinguishing agent is greatly improved, the superfine dry powder extinguishing agent can be applied to fire places and fire types, most of the dry powder extinguishing agents on the market at present have poor water repellency and high moisture absorption rate, so that the product is agglomerated and the quality guarantee period is shortened.
Disclosure of Invention
The invention aims to: the invention provides a superfine dry powder extinguishing agent and a preparation method thereof, aiming at solving the problems of larger particle size, higher moisture absorption rate and easy agglomeration of the existing dry powder extinguishing agent.
The invention specifically adopts the following technical scheme for realizing the purpose:
the superfine dry powder extinguishing agent comprises, by mass, 82-95 parts of monoammonium phosphate, 4-8 parts of white carbon black, 0.2-1 part of silicone oil, 2-5 parts of mica powder and 2-5 parts of talcum powder.
Preferably, the superfine dry powder extinguishing agent comprises, by mass, 86-93 parts of monoammonium phosphate, 6-7 parts of white carbon black, 0.5-0.7 part of silicone oil, 3-4 parts of mica powder and 3-4 parts of talcum powder.
Preferably, the monoammonium phosphate is industrial grade monoammonium phosphate with an effective component content of 98%.
A preparation method of an ultrafine dry powder extinguishing agent comprises the following steps:
(1) mixing monoammonium phosphate, white carbon black, mica powder and talcum powder, and then placing the mixture into a flour mill for coarse grinding;
(2) putting the particles coarsely ground in the step (1) into a grinder for fine grinding;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 80-100 ℃, adding silicone oil under continuous stirring, uniformly stirring again, and drying to obtain the product.
Preferably, the stirring speed in the step (3) is 500-800 r/min when the silicone oil is added, and the stirring speed in the drying process is 1200-1600 r/min.
Preferably, the particles in the step (3) are dried until the water content is below 0.12 wt%.
The invention has the following beneficial effects:
1. the method comprises the steps of crushing particles of monoammonium phosphate, white carbon black, mica powder and talcum powder, then coating the particles with silicone oil, and continuously drying the particles to remove moisture, so that the particles are low in moisture content and moisture absorption rate, have water repellency, strong anti-caking capacity and longer in storage life; meanwhile, the particles are more uniform, the particle size is smaller, the specific surface area is larger, and the fire extinguishing performance is better due to continuous stirring during drying.
2. The method has the advantages of simple process, low production cost, suitability for industrial production and good economy.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following examples are provided to illustrate the present invention in further detail. The following detailed description of embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a superfine dry powder extinguishing agent, and the preparation method comprises the following steps:
(1) mixing 82 parts of monoammonium phosphate, 8 parts of white carbon black, 5 parts of mica powder and 5 parts of talcum powder according to parts by mass, placing the mixture into a flour mill for coarse grinding, and passing through an 80-mesh sieve after coarse grinding;
(2) putting the particles screened out after coarse grinding in the step (1) into a grinder for fine grinding, and grinding to the particle size of less than 20 mu m;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 90 ℃, keeping constant temperature, continuously stirring and adding 1 part of silicone oil under the condition that the rotating speed is 600r/min, then increasing the rotating speed to 1400r/min, continuously stirring, and drying at constant temperature until the moisture is lower than 0.12 wt% to obtain the product.
Example 2
The embodiment provides a superfine dry powder extinguishing agent, and the preparation method comprises the following steps:
(1) mixing 95 parts by mass of monoammonium phosphate, 4 parts by mass of white carbon black, 2 parts by mass of mica powder and 2 parts by mass of talcum powder, placing the mixture into a flour mill for coarse grinding, and passing the mixture through a 80-mesh sieve after coarse grinding;
(2) putting the particles screened out after coarse grinding in the step (1) into a grinder for fine grinding, and grinding to the particle size of less than 20 mu m;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 90 ℃, keeping constant temperature, continuously stirring and adding 0.2 part of silicone oil under the condition that the rotating speed is 600r/min, then increasing the rotating speed to 1400r/min, continuously stirring, and drying at constant temperature until the moisture is lower than 0.12 wt% to obtain the product.
Example 3
The embodiment provides a superfine dry powder extinguishing agent, and the preparation method comprises the following steps:
(1) mixing 86 parts of monoammonium phosphate, 6 parts of white carbon black, 3 parts of mica powder and 3 parts of talcum powder according to parts by mass, placing the mixture into a flour mill for coarse grinding, and passing the mixture through a 80-mesh sieve after coarse grinding;
(2) putting the particles screened out after coarse grinding in the step (1) into a grinder for fine grinding, and grinding to the particle size of less than 20 mu m;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 90 ℃, keeping constant temperature, continuously stirring and adding 0.5 part of silicone oil under the condition that the rotating speed is 600r/min, then increasing the rotating speed to 1400r/min, continuously stirring, and drying at constant temperature until the moisture is lower than 0.12 wt% to obtain the product.
Example 4
The embodiment provides a superfine dry powder extinguishing agent, and the preparation method comprises the following steps:
(1) mixing 93 parts of monoammonium phosphate, 7 parts of white carbon black, 4 parts of mica powder and 4 parts of talcum powder according to parts by mass, placing the mixture into a flour mill for coarse grinding, and passing the mixture through a 80-mesh sieve after coarse grinding;
(2) putting the particles screened out after coarse grinding in the step (1) into a grinder for fine grinding, and grinding to the particle size of less than 20 mu m;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 90 ℃, keeping constant temperature, continuously stirring and adding 0.7 part of silicone oil under the condition that the rotating speed is 600r/min, then increasing the rotating speed to 1400r/min, continuously stirring, and drying at constant temperature until the moisture is lower than 0.12 wt% to obtain the product.
Example 5
The embodiment provides a superfine dry powder extinguishing agent, and the preparation method comprises the following steps:
(1) mixing 90 parts by mass of monoammonium phosphate, 7 parts by mass of white carbon black, 3 parts by mass of mica powder and 3 parts by mass of talcum powder, placing the mixture into a flour mill for coarse grinding, and passing the mixture through a 80-mesh sieve after coarse grinding;
(2) putting the particles screened out after coarse grinding in the step (1) into a grinder for fine grinding, and grinding to the particle size of less than 20 mu m;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 90 ℃, keeping constant temperature, continuously stirring and adding 0.6 part of silicone oil under the condition that the rotating speed is 600r/min, then increasing the rotating speed to 1400r/min, continuously stirring, and drying at constant temperature until the moisture is lower than 0.12 wt% to obtain the product.
The performance of the superfine dry powder extinguishing agent obtained in example 5 was compared with that of an existing ABC superfine dry powder extinguishing agent, and Table 1 was prepared according to the GA578-2005 standard.
TABLE 1
And (4) conclusion: according to the comparison of data in the table 1, compared with the existing ABC superfine dry powder extinguishing agent, the product obtained by the invention has the advantages of lower bulk density, lower water content, lower moisture absorption rate, stronger caking resistance, no water absorption and smaller particle size, so that the product has better fire extinguishing performance and longer quality guarantee period.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and the scope of the present invention is defined by the appended claims, and all changes that come within the meaning and range of equivalency of the specification are therefore intended to be embraced therein.
Claims (6)
1. A superfine dry powder extinguishing agent is characterized in that: the main raw materials comprise, by mass, 82-95 parts of monoammonium phosphate, 4-8 parts of white carbon black, 0.2-1 part of silicone oil, 2-5 parts of mica powder and 2-5 parts of talcum powder.
2. The superfine dry powder extinguishing agent according to claim 1, wherein: the main raw materials comprise, by mass, 86-93 parts of monoammonium phosphate, 6-7 parts of white carbon black, 0.5-0.7 part of silicone oil, 3-4 parts of mica powder and 3-4 parts of talcum powder.
3. The superfine dry powder extinguishing agent according to claim 2, wherein: the monoammonium phosphate is industrial grade monoammonium phosphate with the effective component content of 98 percent.
4. The method for preparing the superfine dry powder extinguishing agent according to any one of claims 1 to 3, wherein the method comprises the following steps: the method comprises the following steps:
(1) mixing monoammonium phosphate, white carbon black, mica powder and talcum powder, and then placing the mixture into a flour mill for coarse grinding;
(2) putting the particles coarsely ground in the step (1) into a grinder for fine grinding;
(3) and (3) uniformly stirring the particles obtained in the step (2), heating to 80-100 ℃, adding silicone oil under continuous stirring, uniformly stirring again, and drying to obtain the product.
5. The method for preparing the superfine dry powder extinguishing agent according to claim 4, wherein the method comprises the following steps: and (3) stirring at 500-800 r/min when the silicone oil is added in the step (3), and stirring at 1200-1600 r/min when the silicone oil is dried.
6. The method for preparing the superfine dry powder extinguishing agent according to claim 4, wherein the method comprises the following steps: and (4) drying the particles in the step (3) until the water content is below 0.12 wt%.
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| CN201911275723.1A CN111135520A (en) | 2019-12-12 | 2019-12-12 | Superfine dry powder extinguishing agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521635A (en) * | 2021-07-12 | 2021-10-22 | 安徽科技学院 | Pearl powder type water-powder dual-purpose fire extinguishing agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2952633A (en) * | 1958-03-11 | 1960-09-13 | Specialties Dev Corp | Dry powder fire extinguishing composition compatible with mechanical foam and methodof extinguishing fires |
| CN105963898A (en) * | 2016-05-25 | 2016-09-28 | 李涛 | Novel ABC dry powder extinguishing agent and preparation method thereof |
| CN108771815A (en) * | 2018-06-01 | 2018-11-09 | 苏州吴越合成消防科技有限公司 | A kind of dry powder fire extinguishing agent |
| CN109011317A (en) * | 2018-09-25 | 2018-12-18 | 安徽省玉龙消防有限公司 | A kind of New Type Dry Powder Extinguishant and preparation method thereof |
-
2019
- 2019-12-12 CN CN201911275723.1A patent/CN111135520A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2952633A (en) * | 1958-03-11 | 1960-09-13 | Specialties Dev Corp | Dry powder fire extinguishing composition compatible with mechanical foam and methodof extinguishing fires |
| CN105963898A (en) * | 2016-05-25 | 2016-09-28 | 李涛 | Novel ABC dry powder extinguishing agent and preparation method thereof |
| CN108771815A (en) * | 2018-06-01 | 2018-11-09 | 苏州吴越合成消防科技有限公司 | A kind of dry powder fire extinguishing agent |
| CN109011317A (en) * | 2018-09-25 | 2018-12-18 | 安徽省玉龙消防有限公司 | A kind of New Type Dry Powder Extinguishant and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 中华人民共和国公安部消防局: "《中国消防手册 第十二卷 消防装备.消防产品》", 31 December 2007, 上海科学技术出版社 * |
| 唐秀丽: "《物流仓储管理》", 30 November 2008, 上海交通大学出版社 * |
| 康青春 等: "《消防灭火救援工作实务指南》", 31 October 2011, 中国人民公安大学出版社 * |
| 张俊: "《磷精细化学品生产工艺》", 31 December 1998, 云南科技出版社 * |
| 杨亮: "《灭火剂与其标准化》", 31 January 2015, 科学技术文献出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521635A (en) * | 2021-07-12 | 2021-10-22 | 安徽科技学院 | Pearl powder type water-powder dual-purpose fire extinguishing agent and preparation method thereof |
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Application publication date: 20200512 |