C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/270, 23/318,
C01B 7/03 (2006.01) B01J 8/38 (2006.01) C01G 49/02 (2006.01) C01G 49/06 (2006.01)
Patent
CA 1106573
ABSTRACT OF THE DISCLOSURE An improved industrial process and apparatus are provided for producing chlorine and iron oxide in a multistage recirculating-fluidized-bed reactor wherein ferric chloride in the vapor phase is reacted with an excess of oxygen at tempera- tures from 550 to 800°C. The improvement comprises utilizing a reactor that includes an initial "dense" zone and a downstream "dilute" zone. In the dense zone, a fuel is burned, reactants and recirculated iron oxide particles are heated, ferric chlo- ride is vaporized and at least 50% of the ferric chloride is converted tochlorine and iron oxide. A solids volume fraction from 0.3 to 0.6 and a superficial gas velocity from 0.15 to 0.6 meters/second are maintained in the dense zone. In the down- stream dilute zone, a solids fraction from 0.005 to 0.05 is maintained, along with a superficial gas velocity from 1.5 to 6 meters/second which is from 5 to 25 times the superficial gas velocity in the dense zone, and the conversion of ferric chloride is continued to greater than 95% completion.
325726
Reeves James W.
Sylvester Robert W.
Wells David F.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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