A new fire extinguishing agent that can generate fire-fighting smoke was proposed. The ultra-fine particles in the smoke can float in air for a long period, which makes the smoke behaves as gas. The potassium compounds in the particles exhibits fire extinguishing performance base on negative catalyst effect. New fire extinguishing equipment and systems were designed based upon the examined fire extinguishing property of the new agent. The volumetric agent concentration was determined by the fire-extinguishing time and the reignite prevention examined in laboratory scale experiment. Real scale extinguishing experiments of Class A, Class B and vehicle fire were also carried out. The new agent can be manufactured into sheet, block and liquid, which give it a variety of applications, such as protection for industrial machinery and batteries, and also fire extinguishing building materials.
