Dry powder extinguishing agent using expansible graphite as main material

Abstract

The invention provides a dry powder extinguishing agent using expansible graphite as a main material; the dry powder extinguishing agent comprises the main material and additives, wherein the main material is graphite which is expansible when being heated; and the additives are anti-blocking agent, inert adding component and so on. According to the invention, the heat insulating efficiency and anti-burnback performance of the dry powder extinguishing agent during extinguishing large-area pool fire and flowing fire can be enhanced, and spread rate and scale of a fire disaster mainly caused by thermal radiation are effectively reduced.

Description

technical field [0001] The invention relates to a fire extinguishing agent, in particular to an expandable dry powder fire extinguishing agent used for extinguishing large-area oil pool fires and flowing fires. Background technique [0002] With the implementation of my country's energy security strategy and the rapid development of the economy and society, the number of large oil storage tank farms and ultra-large oil tanks in my country is increasing, and the risk of potential large-area oil pool fires and flow fire accidents is also increasing. From the Huangdao oil depot fire in 1989 to the Dalian Xingang oil tank fire in 2010, frequent fires in the tank farm have caused serious casualties, property losses and environmental impacts. Once a fire occurs in the oil tank area, it is easy to form a large area of ​​pool fire and flowing fire. If the flame is not controlled in time and effectively, its strong heat radiation will cause the fire to spread rapidly and form a sea o...

AI Technical Summary

Problems solved by technology

However, the difficulty of tactical coordination and the cooling of foam after dry powder flame extinction are affected by factors such as the scale of the fire. Except for the initial fire, it is generally difficult to achieve good results