High-efficiency method for removing sulfur and mercury of coal-fired flue gas, and apparatus thereof
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United States of America Patent
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Feb 20, 2018
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Sep 25, 2013
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May 14, 2013
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Abstract
A high-efficiency method for removing sulfur and mercury of coal-fired flue gas, and an apparatus thereof. The method comprises: activating, by using water vapor, lime or Ca(OH)2 used as a sulfur removal and mercury removal absorbent and mixing the lime or Ca(OH)2 with flue gas; conveying, by using water vapor, part of a by-product to a top of a reaction tower and mixing the part of the by-product with the flue gas, so as to strengthen the sulfur removal and mercury removal effect; the flue gas entering a bag type or electric bag compound dust remover after sulfur removal and mercury removal in the reaction tower, and conveying part of the collected by-product to the reaction tower for cycle use.
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