A new type of gas scrubber called the Double- Contact-Flow Scrubber (DCFS) for flue gas desulfurization has been developed. This new DCFS achieved energy conservation together with high desulfurization and high dedusting efficiencies by spouting absorbent liquid from the new type nozzles located at the bottom of the scrubber to ensure better gas liquid contact Further, the elimination of any internal parts of the absorber other than header pipes and nozzles not only lead to large scale simplification of absorber construction compared to the conventional scrubber but also makes for easy maintenance by precluding scale deposits. This scrubber achieved over 95 percent desulfurization efficiency together with high dedusting effect in laboratory tests as well as in a demonstration plant treating 300 000 m~3N/h of flue gas. In addition, for a 1 000 MW commercial plant, a power consumption reduction of 15 percent when compared to that for a similar conventional plant is estimated.
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