The invention discloses an ERD +
coal saturated steam
catalytic combustion denitration device. The ERD +
coal saturated steam
catalytic combustion denitration device comprises a decomposing furnace, wherein a secondary air inlet is formed in the bottom of the decomposing furnace, and connected with a
cement rotary kiln; the decomposing furnace comprises a reduction zone, a main burning zone, a reburning zone and a burning-out zone from the bottom up, a reduction zone saturated steam catalytic
combustor and a reburning zone saturated steam catalytic
combustor are respectively mounted in the reduction zone and the reburning zone; the reduction zone saturated steam catalytic
combustor and the reburning zone saturated steam catalytic combustor are connected with a steam flow metering device, the steam flow metering device is connected with a steam
surge tank, the steam
surge tank is connected with a steam main
pipe, the main burning zone and the burning-out zone are respectively connected with
tertiary air and over-fire air, and are
oxygen enriched
combustion zones, to ensure that pulverized
coal of the
system is burnt out. The invention further discloses an ERD + coal saturated steam
catalytic combustion denitration technique, and has the advantages of high denitration efficiency, simple and easily operated technological process, low operation cost, high
system stability, optimized clinker production technology, energy-saving and consumption-reducing effects and the like.