Solid-Air Two Phase Flow in a Pulverized Coal Boiler
Abstract: In the case of coal-fired power plants that operate on a continuous supply of pulverised coal to furnaces, maldistribution of pulverised fuel often occurs as coal particles are pneumatically transported from the mill through ducts consisting of numerous bends and straight sections. The study was carried out on a coal-fired boiler with capacity of 70 tons of steam per hour. Iso-kinetic sampling of pulverized coal was performed to find out the airflow rate and coal flow rate in the two-phase flow. With baseline operation parameters from a cogeneration boiler, computational fluid dynamics (CFD) software was used to simulate the two-phase flow. Based on simulation results, the best sampling point was the location of 3D - 5D straight pipeline. The influence of sampling error was minor in these locations.
文章引用: 张育诚 , 吴国光 , 焦鸿文 , 郑景亮 (2012) PC锅炉之双相流研究。 可持续能源， 2， 8-10. doi: 10.12677/se.2012.21002
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