【摘要】 <正> 一、概述 我院接受了燃煤增压流化床(PFBC)燃烧试验研究的任务,在试验研究的同时,试图利用模型研究的手段,预测流化床的各种工作参数对燃烧过程的影响,以减少一些试验研究的工作量。由于流化床燃烧模型目前尚处于探索阶段,国际上发表的多是常压流化床燃烧(AFBC)模型,有关PFBC模型的文章只是个别而已。如1980年Sexena和Turek提出的PFBC综合模型,文章并未考虑床内气泡对流体动力学过程和燃烧反应过程的影更多还原

【Abstract】 In this paper, a mathematical model for coal fired pressurized fluidized bed combustion (PFBC) is proposed on the designed condition of the Nanjing Institute of Technology (NIT) PFBC miniplant. The model, based on the two phase theory of fluidization, is characterized by the considerations of the pressurized impact, particle size distribution and so on. This model is a system model, which is composed of fluidization, coal combustion in the bed as well as particle elutriation, coal combustion in the freeboard, heat removed by cooling tubes immersed in the bed and sulfur absorption. The model results were compared with the txperiment data of the NIT PFBC plant and the Leatherhead PFBC plant.更多还原