A method for producing magnesium oxide composition, magnesium oxide composition, desulfurization for neutralizing agent, flue gas desulfurization method, and flue gas desulfurization equipment

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a magnesium oxide composition, in which the hydration (slaking) reaction processing time is short, and with which scaling of magnesium oxide scarcely occurs in the hydration (slaking) reaction, wherein the composition includes magnesium oxide with stable flowability as the main ingredient, exists with a shape of a molded body or in a finely pulverized state, and contains magnesium hydroxide, and to provide the composition obtained thereby, a neutralizing agent for desulfurization including the composition as the main ingredient, and a method for desulfurizing flue gas using the neutralizing agent, and an apparatus for desulfurizing flue gas.;SOLUTION: In the method for producing a magnesium oxide composition containing magnesium hydroxide, magnesium oxide is kneaded with water in the presence of sodium hydroxide and/or sodium carbonate and subsequently molded, and a hydration reaction is made to proceed with the obtained molded body just as it is. The magnesium oxide composition is obtained by the production method. The neutralizing agent for desulfurization includes the magnesium oxide composition as the main ingredient. The method for desulfurizing flue gas uses the neutralizing agent for desulfurization as an alkali source and the apparatus for desulfurizing flue gas is operated by using the neutralizing agent for desulfurization as an alkali source.;COPYRIGHT: (C)2013,JPO&INPIT