Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (3): 78-82.doi: 10.3969/j.issn.1000-565X.2011.03.016

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Modeling Experiment of SNCR Injection Based on Heat Balance Theory

LU Zhi-Min   

  1. South China university of technology, guangdong province electricity institute ∥ green energy technology key laboratory, guangdong guangzhou 510640
  • Received:2010-04-21 Revised:2010-08-31 Online:2011-03-25 Published:2011-02-01
  • Contact: 卢志民(1979-)，男，博士，讲师，主要从事低污染燃烧技术及烟气污染控制研究 E-mail:zhmlu@scut.edu.cn
  • About author:卢志民(1979-)，男，博士，讲师，主要从事低污染燃烧技术及烟气污染控制研究
  • Supported by:

    国家“973”计划项目(2011CB201500)；能源清洁利用国家重点实验室(浙江大学)开放课题

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Abstract:

Proposed in this paper is a heat balance-based experiment method for the modeling of SNCR（Selective Non-Catalytic Reduction） injection.The experiments are carried out at a 1∶10 410t/h boiler modeling platform,by which the influences of total flowrate,flow velocity,injector number and injection strategy on the mixing effect are investigated.Moreover,the concept of ideal NOx reduction ratio is introduced to quantify the NOx reduction with different injection strategies.The results indicate that the ideal NOx reduction ratio increases from 47% to 58% with the total flowrate and increases by 8% with the flow velocity,and that it varies from 44% to 52% at different injection strategies.Moreover,it is found that ammonia/NO ratio also has a significantly positive effect on the ideal NOx reduction ratio.

Key words: Selective non-catalytic reduction, Heat balance, Nitrogen oxides, Mixing, Modeling