METHOD OF PROTECTION FROM EXPLOSION IN OPERATION OF GAS TRANSPORTATION SYSTEM Russian patent published in 1997 - IPC

FIELD: fire-fighting equipment. SUBSTANCE: the offered method includes passage of gases through fire-blocking member with stationary layer of oxidation catalyst in the amount ensuring the degree of conversion of oxidized gas of, at least, 0.55 at working temperature of catalyst. Determined preliminarily is velocity of heat propagation of reaction zone of catalytic oxidation and velocity of start of fluidization of catalyst particles, and velocity of motion of gas flow in fire-blocking member at normal conditions, related to its flow section, is limited by Wp < Wn < Wb, where Wp is velocity of heat propagation of zone of reaction of catalytic oxidation; Wn is velocity of motion of gas flow in fire-blocking member at normal conditions, related to its flow section; and Wb is velocity of start of fluidization (free-fall velocity) of catalyst particles. With use of clamped stationary layer of catalyst, velocity of motion of gas flow in fire-blocking member at normal conditions, related to its flowsection, is limited by Wp < Wn. EFFECT: higher efficiency. 1 tbl