Urea, also known as carbamide, is an organiccompound with chemical formula CO(NH2)2.This amide has two –NH2 groups joined by a carbonyl (C=O)functional group. ... Urea is widely used in fertilizers as a source ofnitrogen (N) and is an important raw material for the chemical industry.
coal-fired flue gas denitrification withurea serving as reducing agent
Because of safety in transport andstorage,denitrification technology with urea serving as reducing agent hasattracted more and more attention. The mechanism of denitrificaion,technologysystem and engineering application were reviewed,which were related toSelective Catalytic Reduction,Selective Non-Catalytic Reduction and urearoute.Then,the problems existing in the process of application wereanalyzed,and solving measures were put forward
Technical specification of Urea(bagged)for denitrification |
No | description | unit | standard |
1 | class | - | qualified |
2 | nitrogen content (dry basis) | % | ≥46.0 |
3 | Biuret content | % | ≤1.0 |
4 | Moisture content (H2O) | % | ≤0.7 |
5 | Iron content（Fe） | % | ≤0.001 |
6 | alkalinity（NH3） | % | ≤0.03 |
7 | Sulfate content（SO42-） | % | ≤0.02 |
8 | Water insoluble content | % | ≤0.04 |
9 | granularity（0.85-8mm） | % | ≥90 |
