Process for dry desulfurization of flue gas

Details Process for dry desulfurization of flue gas Process for dry desulfurization of flue gas

1981-06-16

1983-12-20

Heller, Gregory A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423244, 502418, B01J 800, C01B 1700, C01B 1702

Patent

active

044217323

ABSTRACT:
Sulfur oxides contained in the flue gas from coal-fired boiler are adsorbed by an adsorbent prepared by dry-distilling a portion of fuel coal satisfying at least one of requirements of an ash content lower than 15% by weight and a fixed carbon content of at least 50% by weight, thereby producing semi-coke, and activating the semi-coke by steam, and then the sulfur oxides-adsorbed adsorbent is heated to desorb the adsorbed sulfur oxides at a high concentration. The desorbed sulfur oxides are passed through a bed of semi-coke before the activation to recover the sulfur oxides as elemental sulfur.

REFERENCES:
patent: 3502427 (1970-03-01), Jobswich
patent: 4164555 (1979-08-01), Steiner
patent: 4219537 (1980-08-01), Steiner
patent: 4259304 (1981-03-01), Steiner

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