干粉滅火系統為什么不適用于鈉、鉀等活潑金屬的火災
來源：http://www.xintli.net/ 日期：2023-06-03
干粉滅火系統主要由兩部分組成，即干粉滅火設備部分和火災自動探測控制部分。
The dry powder fire extinguishing system mainly consists of two parts, namely the dry powder fire extinguishing equipment part and the automatic fire detection and control part.
(1)干粉滅火部分由干粉儲罐、動力氣瓶、減壓閥、輸粉管道以及噴嘴等組成。
(1) The dry powder extinguishing section consists of a dry powder storage tank, a power cylinder, a pressure reducing valve, a powder conveying pipeline, and a nozzle.
(2)災自動探測控制部分有火災探測器、啟動瓶、報警控制器等設備。
(2) The automatic disaster detection and control section includes equipment such as fire detectors, starter bottles, and alarm controllers.
系統分類
System classification
1，按滅火方式分為全淹沒干粉滅火系統和局部應用干粉滅火系統。
1. According to fire extinguishing methods, it is divided into fully submerged dry powder fire extinguishing systems and locally applied dry powder fire extinguishing systems.
2，按設計情況分為設計型干粉滅火系統和預制型干粉滅火系統。
2. According to the design situation, it is divided into design type dry powder fire extinguishing systems and prefabricated dry powder fire extinguishing systems.
3，按保護對象分為組合分配系統和單元獨立系統。
3. It is divided into a combination allocation system and a unit independent system according to the protected object.
4，按驅動氣體儲存方式分為儲氣式干粉滅火系統、儲壓式干粉滅火系統和燃氣式干粉滅火系統。
4. According to the storage method of driving gas, it is divided into gas storage dry powder fire extinguishing system, pressure storage dry powder fire extinguishing system, and gas type dry powder fire extinguishing system.
那么，您知道干粉滅火系統為什么不適用于鈉、鉀等活潑金屬的火災嗎？下面
川消為您分析一番：
So, do you know why dry powder fire extinguishing systems are not suitable for fires involving active metals such as sodium and potassium? Below, Chuanxiao will analyze for you:
干粉分為ABCD類,ABC類主要成份碳酸氫鈉受熱分解出二氧化碳和水蒸氣
Dry powder is divided into ABCD types, and the main component of ABC type is sodium bicarbonate, which decomposes into carbon dioxide and water vapor upon heating
活潑金屬，如鈉、鉀等都可以與二氧化碳和水反應，其燃燒生成物過氧化鈉、過氧化鉀、超氧化鉀也可以與二氧化碳和水反應，所以金屬著火不能用干粉滅火器，只能用沙子蓋滅或專用D類干粉滅火器。
Active metals, such as sodium and potassium, can react with carbon dioxide and water, and their combustion products such as sodium peroxide, potassium peroxide, and potassium peroxide can also react with carbon dioxide and water. Therefore, dry powder fire extinguishers cannot be used for metal fires, and can only be covered with sand or specialized Class D dry powder fire extinguishers.
It doesn't mean that, it mainly depends on what type of dry powder you use in the fire extinguishing system. If your fire extinguishing system contains ABC type dry powder, it cannot be used to extinguish fires of active metals such as sodium and potassium. If you have any further questions or needs, welcome to our website http://www.xintli.net consulting service
