Numerical simulation analysis of novel two-stage gasifier

JIN Weilong; WANG Yifei; PENG Kang; WU Chaoqi; XU Jianliang

doi:10.3969/j.issn.0438-1157.2012.12.002

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Numerical simulation analysis of novel two-stage gasifier

更新时间：2025-12-10

- Numerical simulation analysis of novel two-stage gasifier
- CIESC Journal Issue 12, Pages: 3747-3755(2012)
- 作者机构：
  
  华东理工大学煤气化教育部重点实验室,上海,200237
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.12.002
  CLC： Q054
- Online First：27 June 2012，
  
  Published：27 June 2012
- 稿件说明：
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JIN Weilong, WANG Yifei, PENG Kang, et al. Numerical simulation analysis of novel two-stage gasifier[J]. CIESC Journal, 2012, (12): 3747-3755.
DOI：

JIN Weilong, WANG Yifei, PENG Kang, et al. Numerical simulation analysis of novel two-stage gasifier[J]. CIESC Journal, 2012, (12): 3747-3755. DOI： 10.3969/j.issn.0438-1157.2012.12.002.

摘要

对一种新型两段式水煤浆气化炉的气化效率进行了数值计算和分析。模型中将水煤浆的气化过程分为水分蒸发、煤热解、气相反应和气固异相反应等子模型。气相反应速率需同时考虑湍流混合和化学反应机理

气固反应的速率采用未反应缩芯模型。运用可实现k-ε模型描述气相湍流流动

随机轨道模型追踪水煤浆颗粒的运动。以中试多喷嘴水煤浆气化炉为建模基础

验证了该水煤浆气化模型的准确性。模拟计算得出新型两段炉的有效气组分含量为85.91%

冷煤气效率为76.42%。

Abstract

The gasification efficiency of a novel two-stage gasifier was studied and analyzed by numerical simulation.In this model the coal-water slurry(CWS)gasification process was divided into several sub-models:water droplet evaporation

coal pyrolysis

gas homogeneous reaction and gas-solid heterogeneous reaction.Turbulent flow mixing and chemical reaction were considered in the rate of gas phase reaction.The unreacted-core shrinking model was used to describe the rate of gas-solid heterogeneous reaction.The realizable k-ε turbulence model was used for the gas phase flow

and coal-water slurry particles were tracked by the Random-Trajectory model.The CWS gasification model was verified based on the model subject of a pilot-scale opposed multi-burner(OMB)gasifier.The simulation result showed that effective gas composition of the novel two-stage gasifier was 85.91%

and cold gas efficiency was 76.42%.

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