Abstract Process for removing sulfur oxides from water vapor, steam and oxygen containing exhaust gases and in particular from power plant exhaust gases by passing the exhaust gases through a reactor provided with a bed of granular carbon containing material adapted to move in said reactor in a direction from the top to the bottom thereof, which comprises withdrawing a portion of the exhaust gas after it has passed only through the upper part of said reactor, said gas constituting desulfurized gas and allowing the remaining portion of the gas to pass substantially completely through the moving carbon containing granulate bed into the bottom part of said reactor, withdrawing this remaining part of the gas from the bottom part of said reactor and subjecting the same to a further desulfurization treatment.
Process according to claim 1, wherein said desulfurization treatment is carried out in a second moving bed reactor.
Claim 2
Dependent Claim
66 words
Process according to claim 2, which comprises arranging at least one further reactor which operates similarly to said first reactor between said first and second reactor whereby gas is withdrawn from the top portion of each of said reactors as desulfurized gas and wherein the gas withdrawn from the bottom part of each of said reactors is introduced into an after arranged reactor for further desulfurization.
Claim 3
Dependent Claim
31 words
Process according to claim 1, wherein the portion of the gas taken off at the upper part of the reactor amounts to 30-90 volume percent of the total gas introduced therein.
Claim 4
Dependent Claim
31 words
Process according to claim 2, wherein desulfurized gas formed in each of said reactors is introduced into a common collecting conduit for admixture therein to provide a constant average desulfurization degree.