Dry-process homogeneous-phase selective non-catalytic reduction denitration method

The invention discloses a dry-process homogeneous-phase selective non-catalytic reduction denitration method. The method comprises the following steps: carrying out pyrolysis gasification on a solid denitration agent to prepare a reducing gaseous mixture, and then carrying out high-temperature denitration by utilizing the reducing gaseous mixture. According to the invention, the denitration reaction process is a gas-phase reaction. Compared with a conventional SNCR denitration method, the method has the advantages that the reaction mass transfer efficiency is improved, the denitration efficiency can reach 85% or above, and meanwhile, hidden dangers caused by a denitration agent solution in the conventional SNCR denitration technology to industrial kiln lining materials, and product qualityand production safety are avoided. The method is simple in technical implementation, low in investment and operation cost, capable of achieving continuous operation and good in safety. The method ismainly suitable for reduct