Highly Effective Fire Extinguishing Mixtures of Iodinated and Fluorinated Hydrocarbons as a Way to Reduce Greenhouse Gas Emissions into the Atmosphere

Abstract

One of possible ways to reduce the volume of the use of hydrofluorocarbons (HFCs) as gaseous fire suppressants is studied in the paper. Extinguishing mixtures of HFCs and some fluoroiodocarbons are investigated. It is theoretically predicted that fluoroiodohydrocarbons are effective inhibitors of conversion of fluorinated alkanes in a flame. Special experimental equipment allowing to measure fire extinguishing concentration of gaseous fire suppressant having high boiling point is described. Experiments show that fluoroiodohydrocarbons are effective means of reducing the use of gaseous fire extinguishing agents based on fluorinated alkanes, which are greenhouse gases: in the presence of insignificant addition of iodized substance the volume of fluorinated alkanes required for the extinguishing decreases several times. Creation of mixtures with the content of iodized components higher than 5 mass. is impractical because in this case the iodine-containing substance will exceed safe level of its use from the point of view of toxicity

Atmospheric Observation of Fluorinated Greenhouse Gases around Four Chemical Plants in China

“…Research conducted on physicochemical analyses mainly focused on determining the GWP, which was estimated by using the reaction rate and other parameters of F-gases [12][13][14][15]. In addition, the technologies of emission reduction and recovery of F-gases were studied by using physical and chemical experiments, such as catalysis, adsorption and separation [16][17][18][19][20][21][22]. The feasibility of the substance as a replacement for F-gases was evaluated by using performance tests, and the replacement of the refrigerants has been widely studied [23][24][25].…”