Numerical simulation of multiphase flow and co-gasification of biomass and coal for a new test reactor

被引:1
作者
Wang, Lijun [1 ]
Wu, Zhonggang [1 ]
Du, Xiaocheng [2 ]
机构
[1] Shenyang Aerosp Univ, Sch Energy & Environm, Shenyang 110136, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian, Peoples R China
关键词
Co-gasification; Numerical simulation; Biomass blending ratio; Particle size ratio; Biomass; Coal; INTRINSIC REACTION-RATE; GASIFIER; PERFORMANCE; BED; TEMPERATURE; BEHAVIOR;
D O I
10.1007/s13399-023-04091-2
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The multiphase flow and co-gasification of biomass and coal in a new test reactor were investigated by numerical simulation. Two 3-D models were built by the Euler method and the Euler-Lagrange method for cold and co-gasification simulations. The influences of particle size ratio and biomass blending ratio on the multiphase flow and reaction characteristics were investigated. The results of the cold simulation show that the effect of particle size ratio increases with the biomass blending ratio, whereas the optimal particle size ratio for particle mixing and fluidization is 2. The co-gasification simulation also reveals the influences of the biomass blending ratio and the particle size ratio on syngas quality. With the increase in the biomass blending ratio, the carbon conversion shows an increasing trend, whereas the heat value of syngas shows an opposite trend. When the biomass blending ratio is 50%, cold gas efficiency is maximized. The flow characteristics influenced by the particle size ratio affect the mass of char participating in gasification reactions, which then further influence syngas composition and carbon conversion. The optimum co-gasification performance is found when the particle size ratio is 2. The relative error is within the acceptable range.
引用
收藏
页码:18211 / 18227
页数:17
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