HONEYCOMB CATALYST, DENITRATION CATALYST OF DENITRATION DEVICE, AND EXHAUST GAS DENITRATION DEVICE

摘要

The present invention provides a honeycomb catalyst and an NO_x removal catalyst for use in an NO_x removal apparatus which can be employed at high efficiency, and a flue gas NO_x removal apparatus, whereby the running cost of a flue gas NO_x removal system in terms of the NO_x removal catalyst is reduced by about one-half.;The honeycomb catalyst having gas conduits for feeding a gas to be treated from an inlet to an outlet of each conduit and performing gas treatment on the sidewalls of the conduit, wherein the honeycomb catalyst has an approximate length such that the flow of the gas to be treated which has been fed into the gas conduits is straightened in the vicinity of the outlet.