基于Euler-Lagrangian方法的GSP粉煤气化过程数值模拟

doi:10.11799/ce201702034

煤炭工程 ›› 2017, Vol. 49 ›› Issue (2): 109-112.doi: 10.11799/ce201702034

基于Euler-Lagrangian方法的GSP粉煤气化过程数值模拟

李平,张悦,李壮楣,刘择一,桑磊

宁夏大学化学化工学院

收稿日期:2016-06-01 修回日期:2016-10-22 出版日期:2017-02-09 发布日期:2017-03-09
通讯作者: 李平 E-mail:liping@nxu.edu.cn

Numerical simulation of the pulverized coal gasification process based on Euler-Lagrangian approach

Received:2016-06-01 Revised:2016-10-22 Online:2017-02-09 Published:2017-03-09

摘要/Abstract

摘要： GSP粉煤气化技术在实际工业应用中存在喷嘴寿命短、水冷壁被烧穿等问题。为了充分了解气化过程特性，利用ANSYS/Fluent软件基于Euler-Lagrangian理论，采用Species Transport模型耦合湍流-化学反应，气相湍流采用Realizable k-ε模型，P-1模型用于辐射传热过程，煤颗粒弥散运动采用DPM模型，对宁东典型气化用煤进行三维多相流GSP粉煤气化数值模拟。模拟结果得到：炉膛内存在“∧”形高温火焰|合成气在低温区富集，其浓度梯度在火焰区较大|炉内合成气组分及微量组分计算结果与实际生产结果吻合较好，同时模拟所得气化炉出口处温度高于灰渣流动温度，符合液态排渣要求。

关键词: GSP粉煤气化, Euler-Lagrangian方法, Fluent, 数值模拟

Abstract: There are some questions such as the short operation life of the nozzle and the water-cooling wall was burned out in industrial production. In order to better understand the coal gasification performance, we numerical simulated the GSP gasification process based on Euler-Lagrangian approach. A steady three dimensional multiphase flow model was established by ANSYS/Fluent. The coupling effect of turbulent-chemistry was considered by Species Transport model. The realizable k-ε was used for the gas phase turbulence. The P-1 model was implemented to radial heat transfer. The DPM model was applied to coal particles motion. The numerical results obtained a “∧” shaped flame is in the gasifier, syngas is mainly located in low temperature region and its concentration gradient is larger in the vicinity of flame. Meanwhile, The comparison between the numerical results with actual operating data shows favorable agreement. In addition, the numerical results obtain temperature of the exit was slower than melting temperaure of ash, satisfy the requirement of liquid slagging. It has a certain practical significance for study of pulverized coal gasification process.

中图分类号:

TQ54

李平，张悦，李壮楣，等. 基于Euler-Lagrangian方法的GSP粉煤气化过程数值模拟[J]. 煤炭工程, 2017, 49(2): 109-112.

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基于Euler-Lagrangian方法的GSP粉煤气化过程数值模拟

Numerical simulation of the pulverized coal gasification process based on Euler-Lagrangian approach

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