4166金沙登录

detailed information

Current location:Home - PRODUSTS - detailed information
  • Product introduction
  • Technical advantages
  • engineering application

General idea and solution

      At present, for the ammonia injection control of most coal-fired power plants, there are three problems: uneven distribution of flow field and NOx concentration field, inability to realize regional ammonia injection, and inability of ammonia injection control to respond to changes in working conditions in time. In order to realize intelligent ammonia injection, it is necessary to optimize the flow field, adopt more scientific full section monitoring method, more advanced control strategy and more accurate control model to control the total amount of ammonia injection and the amount of ammonia injection of each branch, so as to realize regional fine ammonia injection.




图1解决方案


Figure 2 precision control model

Engineering case

      Figure 4 shows the demonstration project of intelligent ammonia injection transformation of 1000MW unit in a power plant. The basic situation of denitration device is shown in Table 1. In order to evaluate the effect of intelligent ammonia injection transformation, the flow field distribution, urea consumption per unit power generation, NOx concentration at the outlet, ammonia escape, NOx non-uniformity at the denitration outlet and ammonia nitrogen molar ratio before and after the transformation were compared.

Flow field distribution at denitration inlet


Urea consumption per unit power generation v.s. NOx concentration at outlet

NOx unevenness at denitration outlet



Ammonia nitrogen molar ratio

economic performance

     Taking 1000MW unit as an example, the economic benefits after intelligent ammonia injection transformation are calculated, including direct economic benefits and indirect economic benefits.

User report

Baidu
sogou