Process and tubular reactor for recovery of chlorine from iron chlorides
OwnerThomas Buller, Stephen Lyke +7inventors
InventorsThomas Buller, Stephen Lyke, Aaron Becker, Stephan De La Veaux, Russell Diemer, James Dunson Jr., James Tilton, David Zimmerman, Stephen Hallock
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Abstract
The present invention relates to a process for recovering chlorine from a feed stream containing metal chlorides using a tubular reactor wherein a hot oxygen containing gas has an initial velocity such that the resulting velocity of the bulk gas formed from mixing the oxygen containing gas with the metal chloride feed stream and a scrubs feed stream is sufficient to remove wall deposits as fast as such deposits are formed.
Claims28
A process for recovering chlorine by oxidizing a stream comprising metal chlorides, comprising the steps of:
- (a) feeding a pre-heated oxygen containing gas into one end of a tubular reactor;
- (b) contacting the pre-heated oxygen containing gas at temperature TOx and velocity vOx with the stream comprising metal chlorides at temperature Tmx and velocity Vmx wherein the metal chlorides are selected from the group consisting of iron chlorides and mixtures of transition, alkali and alkaline-earth metal chlorides existing in the form of entrained solids, entrained liquids, vapors and mixtures thereof;
- (c) introducing non-reactive scrubbing media at temperature Ts and velocity vs into the reactor;
- and
- (d) at least partially reacting the pre-heated oxygen containing gas with the stream comprising metal chlorides, wherein the walls of the tubular reactor are cooled externally to a temperature range of from about 0 to 500° C. and wherein the temperature of the combined oxygen containing gas, metal chlorides and scrubbing media streams is greater than temperature TRx, the minimum temperature required to initiate oxidation of the metal chlorides and wherein the combination of vOx, vmx and vs provides at least enough energy to the scrubbing media to remove wall deposits as fast as the deposits are formed.
A tubular reactor useful in the recovery of chlorine from a stream comprising metal chlorides, the reactor having a feed end and an exit end separated by a length of wall having a diameter D and wherein disposed in the wall near the feed end of the reactor are two or more means for feeding two or more feed streams comprising (a) a first stream comprising hot oxygen, (b) a second stream comprising scrubbing media, and (c) a third stream comprising a metal chloride stream wherein the third stream is fed through a third means for feeding or fed simultaneously with the scrubbing media and wherein the reactor includes a means for pre-heating at least one of the feed streams and wherein the diameter D is varied along the length of wall of the reactor and wall temperature is controlled by an external cooling means at least over a portion of the wall's length.
Dependencies are inferred from the claim text.