Abstract
Removal tests of dilute nitric monoxide by mixed slurry liquid of FeSO4, edta and alkaline earth compound.It was found that among alkaline earth compo-unds, MgSO3 has the best durable effect of NOremoval.The durable effect is affected by the preparation methodof the absorbent: it is increased remarkedly when MgSO3 is hydrated sufficiently.
Another experiment was conducted on the absorption rate of NO into mixed slurry liquid of Fe (II)-edta--MgSO3 System. The results were analyzed on the basis of the theory of gas absorption accompanied by an irreversible reaction.The reactionorder is first with respect to NO, and is first with respect to Fe (II)-edta chelate when the absorbent is prepared in the concentrationrange of FeSO4=0.001-0.12 mol/l, edta=0.001-0.04 mol/l and MgS03=0.86-2.15 wt%. The reaction rate constant was obtained andis expressed as follows: k1, 1=7.49X104exp (4867/RT) (l/g-mol ?sec)
The effect of coexisting gas of SO2, O2 and CO2 on the rateconstant is negligible.
