Process for flue gas denitration

Abstract

Abstract A process for denitrating flue gas which comprises disposing a denitration catalyst bed using NH3 as a reducing agent in a region where the flue gas temperature ranges from 200 to 600 DEG C; injecting NH3 in an amount more than equimolar with nitrogen oxides in the flue gas at a point of the system upstream of the denitration catalyst bed and thereby removing NOx; and removing excess NH3 by adsorption at an NH3 adsorber which contains an NH3 adsorbent consisting of a metal oxide and having a specific surface area of at least 30 m<2>/g in a region downstream of the denitration catalyst bed where the flue gas temperature is 200 DEG C or below.

Inventors

• 👤 Atsushi c/o Nagasaki Ship. & Mach. Works Morii
• 👤 Shozo c/o Nagasaki Ship. & Mach. Works Kaneko
• 👤 Toshihiko c/o Nagasaki Ship.& Mach.Works Imamoto
• 👤 Satoru c/o Nagasaki Ship.& Mach. Works Serizawa
• 👤 Osamu c/o Nagasaki Ship.& Mach.Works Naito
• 👤 Toshiyuki c/o Nagasaki Ship.& Mach.Works Onishi
• 👤 Norihisa C/O Mitsubishi Jukogyo K.K. Kobayashi
• 👤 Kouzo C/O Mitsubishi Jukogyo K.K. Iida

Bibliographic Details