Abstract
Flame arresters used in various industries currently localize burning without extinguishing it. To stop burning, the flow of combustible mixture has to be cut off. A new approach is proposed to extinguish flame without interrupting the flow based on the use of catalytically active material as a flame arrester packing. A typical method requires additional means to maintain a desired catalyst temperature and have a flame arrester of rather a complicated design with insufficient reliability attributed to built-in heat-exchanger having a heat carrier flow controller, temperature controller, and a control system of heat carrier flow that increases failure and misoperation probability of an explosion safety system. Safety method for gas transferring systems, including passing through the flame arrester element comprising a fixed bed of oxidizing catalyst in an amount effective to convert 0.55 of the gas to be oxidized, is achieved by the preliminary determination of the heat propagation velocity of catalytical oxidation zone and starting fluidization velocity of catalyst particles. Thus, the novel method of explosion protection for gas transferring systems provides for independent, external, and control-free effective flame localization and extinguishing without interrupting the combustible gas flow.
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