In the 19th century, with the vigorous development of the oil industry, the development of petrochemical technology was mainly manifested in large-scale and integrated development, that is, the increase in storage tank capacity and the emergence of various storage methods, so the safety of storage tanks has become increasingly important.
The oil and its products stored in oil tanks are flammable, explosive, easy to evaporate, easy to generate static electricity, easy to expand when heated, easy to flow and diffuse, and can float on water, and the probability of fire and explosion is high.
The consequences of a fire are very serious, and the casualties and property losses caused are huge.
In this regard, all countries attach great importance to its fire safety. Due to the characteristics of oil and its product fires, traditional fire extinguishing agents-water are powerless against them. Scientists have been committed to developing methods and fire extinguishing agents for extinguishing liquid combustible fires since the end of the 19th century. They found that when a certain foam concentrate is mixed with water, it can produce dense foam. These foams, as light as morning mist, can gently cover the restless oil surface to isolate the air, and can also stubbornly wrap the leaping flames.
The following is a brief history of the development of Class B foam extinguishing agents:
