化工进展Issue(2)：425-431,7.DOI:10.16085/j.issn.1000-6613.2016.02.013
煤化学链燃烧装置中串联分离器的数值模拟与性能优化
Numerical simulation and optimization on the performance of double-stage cyclone separator in coal-fueled CLC facility
摘要
Abstract
Due to the ash has an inhibitory effect on activity of oxygen carrier in coal-fueled CLC (chemical looping combustion) technology,a new method of separating oxygen carrier and ash respectively by double-stage cyclone separator was proposed in this paper. The RSM(SSG) turbulence model and the particle stochastic trajectory model were both adopted,and the phase coupling was also considered. The numerical simulation was carried out for optimizing the double-stage cyclone separator in CLC facility. According to the simulation result,the size and structure of separator inlet was mainly analyzed and optimized,and the separation performance was verified by experiments. The simulation and experimental results of final optimization model both showed that more than 90% of CaSO4 oxygen carriers return to furnace from dust removal port of first stage separator. The CaSO4loss rate was reduced. About 50% of ash particles were separated from dust removal port of second stage separator,only about 13% with the air discharge from the exhaust port. Dust-returning rate was effectively reduced and the clean exhaust gas was relatively released. The results are significant to the efficient operation of coal-fueled CLC facility.关键词
化学链燃烧/双级旋风分离器/颗粒流/数值模拟/优化Key words
chemical looping combustion (CLC)/double-stage cyclone separator/granular flow/numerical simulation/optimization分类
能源科技引用本文复制引用
姜旭,王翠苹,张龙龙..煤化学链燃烧装置中串联分离器的数值模拟与性能优化[J].化工进展,2016,(2):425-431,7.基金项目
国家自然科学基金项目（21276129）。 （）
