APPARATUS AND METHOD FOR REMOVING SULFER DIOXIDE FROM FLUE GASES

摘要

An apparatus and method for removing sulfur dioxide from a flue gas is described. The apparatus has sequentially operable scrubbing zone and regeneration zone, which communicate with one another via a molten eutectic mixture of lithium, sodium and potassium carbonates. In the scrubbing zone, an ingress flue gas interacts with the molten carbonates, resulting in chemical absorbance of the sulfur dioxide and in discharge of reaction gases. In the regeneration zone, ether a chemical or electrochemical melt regeneration takes place resulting in formation of sulfur-containing vapor which is cooled down for converting the sulfur-containing vapor into a liquid and solid phase for a further collection and utilization.

主权项

1. An apparatus for removing sulfur dioxide from a flue gas, the apparatus comprising:
a housing defining a scrubbing chamber and a regeneration chamber separated from the scrubbing chamber by a separating wall having an open region to provide a hydraulic communication between the scrubbing chamber through a pool common for the scrubbing chamber and the regeneration chamber and comprising a molten eutectic mixture of lithium, sodium and potassium carbonates; the scrubbing chamber comprising: a flue gas inlet port configured for receiving an ingress flow of said flue gas, and a scrubbed gas outlet port configured for discharging an egress flow of a scrubbed gas from the scrubbing chamber; the scrubbing chamber being configured for scrubbing the flue gas by absorbing the sulfur dioxide in the pool to form a molten mixture of carbonates, sulfites and sulfates in the pool; the regeneration chamber being configured for producing a sulfur-containing vapor; and comprising a sulfur-containing vapor outlet port configured for controllable release of the sulfur-containing vapor obtained therein; and a sulfur-containing material collector coupled to said sulfur-containing vapor outlet port via a cooling manifold configured for cooling down said sulfur-containing vapor, and thereby converting said sulfur-containing vapor into a liquid and solid phase materials.