【24h】

Optimizing SCR Performance for Gas-Fired Systems

机译:优化燃气系统的SCR性能

获取原文

摘要

The increase in power generation from renewable sources has resulted in a significant increase in the use of natural gas for both simple and combined cycle plants. Both the combined and simple cycle plants have seen significant cycling of operations and increased the demand for quick start and flexible power to maintain reliability which has resulted in increased NOx emissions and in the failures of some SCRs. Plants in non- attainment areas have also required increased NOx control and in some cases limits on ammonia slip. Static mixers have been utilized on existing ammonia injection grids to improve ammonia distribution at the catalyst face to address maldistribution issues. Static mixers also compensate for changes to the turbine exit velocity and temperature profiles as load cycles up and down. This paper will review improvements in performance with the addition of static mixers and discuss modelling and designs to optimize flue gas, tempering air, temperature, and ammonia distribution to decrease tempering air requirements, improve HRSG efficiency and improve SCR operations.
机译:可再生能源发电的增加导致简单和联合循环电厂的天然气使用量显着增加。联合循环工厂和简单循环工厂都经历了重要的运行循环,并增加了对快速启动和灵活电源以保持可靠性的需求,这导致了NOx排放量的增加和某些SCR的故障。非达标区域的工厂也需要加强对NOx的控制,在某些情况下还需要限制氨泄漏。静态混合器已用于现有的氨注入格栅上,以改善催化剂表面的氨分布,以解决分布不均的问题。静态混合器还可以补偿随着负载循环而变化的涡轮出口速度和温度曲线的变化。本文将回顾通过添加静态混合器而提高的性能,并讨论建模和设计,以优化烟气,回火空气,温度和氨气分布,从而降低回火空气需求,提高HRSG效率并改善SCR操作。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号