强化悬浮式RSP型分解炉石油焦燃烧特性实验及数值模拟研究

水泥生产中分解炉内主要化学物理过程是煤粉的燃烧.与煤粉相比,石油焦是一种经济的替代燃料.本文首先通过实验测试出石油焦燃烧的物理化学特性,根据这些特性建立了石油焦在强化悬浮式RSP型分解炉中燃烧的数值模拟模型.该模型结合气固二相流理论,采用快速反应的PDF模型,对分解炉内石油焦的燃烧过程进行了数值模拟,揭示了分解炉内石油焦的燃烧机理.研究结果表明RSP型分解炉的炉型适宜于石油焦的燃烧,并且数值模拟的结果能为石油焦在分解炉内优化燃烧提供了理论依据和有利的信息.

Experimental and numerical research on petroleum coke combustion characteristics in reinforced suspension calciner

The main physico-chemical processes taking place in the calciner are coal combustion.Petroleum coke,as an economical alternative fuel for the pulverized coal,is widely used in the calciner.The present article is devoted to introduce the research works on make use of petroleum coke as a substitutional fuel of calciner,which consists of two major parts.In the first part,the basic properties of the petroleum coke and its characteristics of grindability, devolatilization,ignition and combustion were investigated by serials of experiment.And in the second part,a numerical model was also presented to simulate the combustion processes taking place in an industrial reinforced suspension calciner.The numerical model was based on two-phase theory and fast reaction PDF model.The results of study show that petroleum coke is a suitable fuel for RSP calciner and the conclusions to be drawn will help in the optimization of a given calciner.