Experimental Study of Simultaneous Flue Gas Desulfurization and Denitrification by New-Style Complex Absorbent

Abstract

A new-style complex absorbent was prepared for simultaneous desulfurization and denitrification in this paper. The performance of the absorbent was tested in fixed bed. On the basis of the experimental results in fixed bed, the M substances were selected as the optimal additive. Furthermore the effects of various factors, such as additive content, flue gas temperature, humidity, Ca/(S+N), and NO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> inlet concentration et al, on the removal efficiencies of SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and NO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> were investigated. According to our simultaneous flue gas desulfurization and denitrification experiment results using the new-style absorbent in a circulating fluidized bed (CFB) system, High simultaneous removal efficiency, 94.9% of SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and 68.3% of NO, was achieved under the optimal experimental conditions. The work would offer important basic data for industrial application of simultaneous removal SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> and NO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> based on flue gas circulating fluidized bed.