蜂窝式烟气脱硝催化剂检测技术规范的不足与建议

摘要

为确保燃煤电厂烟气脱硝系统运行良好,正确评估脱硝催化剂性能状态很有必要.针对蜂窝式烟气脱硝催化剂检测工作的相关国家标准《蜂窝式烟气脱硝催化剂》(GB/T 31587-2015)和行业规范《火电厂烟气脱硝催化剂检测技术规范》(DL/T 1286-2013)中不合理、不完善及与脱硝系统运行实际不完全吻合之处开展了讨论.建议增加催化剂表面活性成分分散均匀性检测;弱化氨逃逸率的测定;完善SO2/SO3转换率检测项的量化评判指标.合理设定检测装置技术参数及测试样品的规格形式要求,以便更好指导火电厂蜂窝式脱硝催化剂各项理化性能的检测.%To ensure the normal operation of DeNOx system,it is necessary to evaluate the DeNOx catalysts performance for coal-fired power plants.In this paper,the inadequacies in the related standards,i.e.Honeycomb-Type DeNOx catalysts (GB/T 31587-2015) and Testing Guideline of SCR Catalyst for Thermal Power Plants (DL/T 1286-2013),are discussed regarding those inconsistent with the practical situations.In order to improve the honeycomb-type SCR DeNOx catalyst performance testing,suggestions are put forward in this paper such as supplementing testing on the dispersion uniformity of the active components on the catalyst surface,weakening the ammonia slip testing,etc.It is also advised to improve the quantified indices for SO2/SO3 conversion rate evaluation and establish the specifications for testing equipments and samples.