锅炉技术2025，Vol.56Issue(2)：23-30,8.
基于CFD的燃煤锅炉协同处置含油污泥方案设计
Design of Co-Processing of Oily Sludge in Coal-Fired Boiler Based on CFD
摘要
Abstract
Aiming at the characteristics of high output,great harm and difficult treatment of oily sludge,a technical scheme of co-incineration and disposal using coal-fired boilers is de-signed.After heated,treated with removal of impurities,proportioned and homogenized,the oily sludge is atomized with droplets of 50-150 μm by a spray gun,and sent to the furnace for combustion.Computational fluid dynamics is used to verify and optimize the design scheme.The results show that when the spray gun is arranged in the lower middle position of the main combustion zone,the sludge droplets can penetrate into the furnace,and can avoid the problems of high wall temperature and strong reducing atmosphere caused by wall-close combustion.Due to the low co-fire proportion and the similar values between oil sludge and pulverized coal,different layout schemes will not affect the temperature field distribution characteristics in the overall furnace.When the spray gun is arranged in the middle of the main combustion zone,the oxygen volumetric fraction around the water walls is relatively high,which avoids the risk of high temperature corrosion.Finally,from the view of the burnout rate of pulverized coal,all different schemes can reduce the carbon content of fly ash after blending with oily sludge.And the effects on the rate by oil sludge at different loads are small when the spray gun is arranged in the middle of the main combustion area.After nu-merical simulation analysis,it is considered that the optimal solution for co-processing oily sludge with large coal-fired boilers is to arrange the atomizing spray gun near the secondary air nozzle in the middle of the main combustion area.关键词
含油污泥/燃煤锅炉/协同处置/掺烧/计算流体力学Key words
oily sludge/coal-fired boiler/co-processing/co-firing/computational fluid dynamics分类
能源与动力引用本文复制引用
张凡志,郑德水,张海丹,李卫平,方仙明,张光学..基于CFD的燃煤锅炉协同处置含油污泥方案设计[J].锅炉技术,2025,56(2):23-30,8.基金项目
浙江省火力发电高效节能与污染物控制技术研究重点实验室开放课题(JSYJY-KJFW-2022-015) （JSYJY-KJFW-2022-015）
