摘 要：为了优化炉内燃烧，降低水冷壁结渣，本文以新疆准东五彩湾北一电厂660MW超超临界燃准东煤四角切圆锅炉为研究对象，在气固两相燃烧模型的基础上，加载编写的udf程序，耦合飞灰颗粒沉积模型，对锅炉辐射受热面的灰颗粒沉积分布情况进行数值模拟研究，结果可为电厂吹灰提供理论指导。结果表明：(1)在75% THA工况下，炉膛26m～29m和32m～35m的高度区间里受热面的灰颗粒沉积速率最大。(2)炉膛四墙的分布具有相似性，沿着锅炉宽度和深度方向，中间灰颗粒沉积速率最大，并且向两边逐渐减少。(3)随着负荷增大，壁面灰颗粒沉积速率增加，沉积范围变大。

Abstract：In order to optimize the combustion in the furnace and reduce the water-cooled wall slagging, this paper takes Xinjiang Zhundong Wucaiwan Beiyi Power Plant 660MW ultra-supercritical coal-fired Zhundong coal quadrangle cut-circle boiler as the research object, and on the basis of the gas-solid two-phase combustion model, loads the udf program written and couples with the fly-ash particles deposition model, and conducts numerical simulation research on the distribution of ash particles deposition in the boiler radiant heated surface, and the results can provide the soot blowing for the power plant. The results can provide theoretical guidance for power plant soot blowing. The results show that: (1) under 75% THA condition, the ash particle deposition rate on the heating surface is the largest in the height interval of 26m-29m and 32m-35m in the furnace. (2) The distribution of the four walls of the hearth is similar, with the maximum rate of ash particle deposition in the middle along the width and depth of the boiler, and decreasing gradually to both sides. (3) As the load increases, the wall ash particle deposition rate increases and the deposition range becomes larger.

TK221

新疆维吾尔族自治区重大专项“超超临界燃用准东煤机组的节能减碳技术研究”(2022A01002-2)；新疆天池能源有限责任公司燃用准东煤锅炉受热面结渣积灰问题技术研究；新疆维吾尔族自治区天池百人引进计划TCBR202106。