Process for carrying out denitration on incineration flue gas generated by printing and dyeing sludge

Abstract

The invention belongs to the technical field of waste gas treatment and particularly relates to a process for carrying out denitration on incineration flue gas generated by printing and dyeing sludge. The process for carrying out denitration on the incineration flue gas generated by the printing and dyeing sludge is characterized by comprising the following steps that: firstly, the incineration flue gas enters an ammonia water storage tank and is fed into a diluting system by a conveying and control system; simultaneously, demineralized water enters a water tank and is conveyed to the diluting system by the conveying and control system; materials in the diluting system are sent to a distribution and control system and then are sent to a hearth by a spraying system; and in the process of conveying the materials to the hearth from the distribution and control system through the spraying system, a flue gas online monitoring system carries out monitoring. The process has the benefits of simplicity for operation, reliability for operation and convenience for management; and wastewater in the process can be recycled after being treated.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a printing and dyeing sludge incineration and denitrification process. Background technique [0002] The harm of NOx [0003] Exhaust gas from power plants contains many harmful substances in the form of gases and solids, nitrogen oxides are also one of them. Nitrogen oxides are the general term for gaseous compounds formed by the combination of nitrogen and oxygen (referred to as NOx), which includes NO, NO 2 , N 2 O and other 5 kinds of gases, but the main component of NOx in the flue gas discharged from general power plants is NO, accounting for more than 90% of the amount of NOx. [0004] The harm of NOx mainly has five aspects, one is the direct damage to the human body. For humans, NOx is a poisonous gas. When the NOx content in the air exceeds the limit value, it will start to cause harm to the human body, which is similar to SOx. The second i...

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Problems solved by technology

The second is that NOx diffuses in the air or dissolves into the ground surface and water, eventually forming acid rain, which will cause serious damage to large areas of trees and crops, even large areas of forests will die, and crop production will be severely reduced.

Fifth, NOx is rich in nutrients and can cause harm to waters