Explosion Limits in Mixtures of Hydrogen, Oxygen, Steam, and Helium

Hre-2 Design Report

“…Little work has been done outside of these temperature limits, at space velocities greater than 1.7 x 10 hr~ , and at very low hydrogen concentrations. [212][213][214][215][216] Assuming a space velocity of 400,000 hr~ for 100% recombination and the conditions stated in Table 3-24, the required catalyst volume was determined to be 0.025 ft . However, a bed volume of 0.353 ft was recommended on the basis of providing sufficient bed thickness to prevent channelling and minimizing pressure drop.…”